/* roulang page: index */
/* =========================================================
   1. 设计变量
   ========================================================= */
:root{
  --ink:#1C1B18;
  --accent:#2F6B5E;
  --accent-dark:#245347;
  --accent-soft:#DCE6E1;
  --bg:#F7F5F1;
  --bg-soft:#EDE9E1;
  --card:#FFFFFF;
  --text:#1C1B18;
  --text-2:#5A5750;
  --text-3:#8A857C;
  --line:#DCD6CB;
  --wheat:#C8B79B;
  --dark-line:rgba(247,245,241,.14);
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(28,27,24,.05);
  --sh-2:0 12px 32px -12px rgba(28,27,24,.18);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
  --section-y:96px;
  --container:1240px;
}

/* =========================================================
   2. 基础重置
   ========================================================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  margin:0 0 .5em;
  font-family:var(--font-sans);
  font-weight:700;
  line-height:1.24;
  color:var(--ink);
  letter-spacing:-.02em;
}
h1{font-size:clamp(30px,4vw,52px);letter-spacing:-.025em;}
h2{font-size:clamp(24px,3vw,32px);}
h3{font-size:clamp(18px,2vw,22px);letter-spacing:-.01em;}
p{margin:0 0 1em;line-height:1.8;}
p:last-child{margin-bottom:0;}
a{color:inherit;text-decoration:none;transition:color .16s var(--ease);}
a:hover,a:focus{color:var(--accent);}
img{display:block;max-width:100%;height:auto;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
figure{margin:0;}
::selection{background:var(--accent-soft);color:var(--ink);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:var(--r-sm);
}

/* 覆盖 Foundation 默认链接与按钮视觉 */
a{color:var(--ink);}
a:hover,a:focus{color:var(--accent);}
button,.button{background:none;box-shadow:none;}
.accordion-title{color:var(--ink);}
label{font-size:13px;color:var(--text-2);}

/* =========================================================
   3. 容器与通用排版
   ========================================================= */
.grid-container{
  max-width:var(--container);
  padding-left:32px;
  padding-right:32px;
  margin-left:auto;
  margin-right:auto;
}
.section{padding-top:var(--section-y);padding-bottom:var(--section-y);}
.section-tight{padding-top:64px;padding-bottom:64px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-2);
  margin:0 0 18px;
}
.eyebrow::before{
  content:"";
  width:24px;
  height:4px;
  background:var(--accent);
  display:inline-block;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head h2{margin-bottom:6px;}
.section-desc{
  font-size:15px;
  color:var(--text-2);
  max-width:520px;
  margin:0;
}
.lead{font-size:17px;color:var(--text-2);line-height:1.8;}
.text-muted{color:var(--text-2);}
.text-faint{color:var(--text-3);}
.mono{font-family:var(--font-mono);letter-spacing:.04em;}

/* =========================================================
   4. 按钮
   ========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#F7F5F1;border-color:var(--accent);}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-dark);border-color:var(--accent-dark);color:#F7F5F1;}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-outline:hover,.btn-outline:focus{border-color:var(--accent);color:var(--accent);}
.btn-ghost-light{background:transparent;color:#F7F5F1;border-color:rgba(247,245,241,.42);}
.btn-ghost-light:hover,.btn-ghost-light:focus{background:rgba(247,245,241,.08);color:#F7F5F1;border-color:rgba(247,245,241,.7);}
.btn-sm{min-height:42px;padding:0 20px;font-size:14px;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease);
}
.btn-text .arrow{transition:transform .16s var(--ease);display:inline-flex;}
.btn-text:hover,.btn-text:focus{color:var(--accent);}
.btn-text:hover .arrow,.btn-text:focus .arrow{transform:translateX(4px);}

/* =========================================================
   5. 顶部导航
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.96);
  border-bottom:1px solid transparent;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(28,27,24,.03);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  color:var(--ink);
  font-weight:700;
  letter-spacing:-.02em;
  min-height:44px;
  align-content:center;
  flex-wrap:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-mark{font-size:22px;font-weight:700;letter-spacing:-.03em;line-height:1;}
.brand-sub{
  font-size:13px;
  font-weight:500;
  letter-spacing:.14em;
  color:var(--text-2);
  border-left:1px solid var(--line);
  padding-left:8px;
  line-height:1;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:72px;
  font-size:15px;
  color:var(--text-2);
  transition:color .16s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:18px;
  width:0;
  height:2px;
  background:var(--accent);
  transform:translateX(-50%);
  transition:width .16s var(--ease);
}
.nav-link:hover,.nav-link:focus{color:var(--accent);}
.nav-link:hover::after,.nav-link:focus::after{width:24px;}
.nav-link.is-active{color:var(--accent);font-weight:600;}
.nav-link.is-active::after{width:24px;}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:46px;
  height:46px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:transparent;
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .16s var(--ease),opacity .16s var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* 移动端抽屉 */
.m-drawer{
  position:fixed;
  top:0;
  right:0;
  width:min(86vw,360px);
  height:100%;
  background:var(--bg);
  border-left:1px solid var(--line);
  z-index:90;
  transform:translateX(102%);
  transition:transform .24s var(--ease);
  padding:22px 22px 32px;
  display:flex;
  flex-direction:column;
  gap:6px;
  overflow-y:auto;
}
.m-drawer.is-open{transform:translateX(0);}
.m-drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
  margin-bottom:10px;
}
.m-drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-md);
  background:transparent;cursor:pointer;font-size:18px;color:var(--ink);line-height:1;
}
.m-drawer nav{display:flex;flex-direction:column;}
.m-drawer nav a{
  display:flex;
  align-items:center;
  min-height:48px;
  font-size:16px;
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.m-drawer nav a.is-active{color:var(--accent);font-weight:600;}
.m-drawer .btn{margin-top:22px;width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(28,27,24,.38);
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:80;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* =========================================================
   6. Hero
   ========================================================= */
.hero{
  padding-top:64px;
  padding-bottom:88px;
  min-height:560px;
  display:flex;
  align-items:center;
  background:var(--bg);
}
.hero-copy{padding-right:24px;}
.hero h1{margin-bottom:20px;max-width:12em;}
.hero-sub{
  font-size:clamp(16px,1.4vw,18px);
  color:var(--text-2);
  line-height:1.8;
  max-width:34em;
  margin-bottom:28px;
}
.hero-actions{
  display:flex;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:44px;
}
.hero-stats{
  display:flex;
  align-items:stretch;
  gap:0;
  flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding-top:24px;
}
.hero-stats .stat{
  padding-right:28px;
  margin-right:28px;
  border-right:1px solid var(--line);
  min-width:110px;
}
.hero-stats .stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.stat-n{
  display:block;
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:600;
  color:var(--ink);
  line-height:1.2;
  letter-spacing:-.01em;
}
.stat-l{display:block;font-size:12px;color:var(--text-3);margin-top:4px;}
.hero-figure{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--bg-soft);
  border:1px solid var(--line);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.figure-anchor{
  position:absolute;
  right:0;
  bottom:0;
  width:64px;
  height:64px;
  background:var(--accent);
  opacity:.92;
}

/* =========================================================
   7. 方案网格
   ========================================================= */
.filter-tabs{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:32px;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
}
.tab{
  display:inline-flex;
  align-items:center;
  min-height:36px;
  padding:0 16px;
  font-size:14px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:transparent;
  cursor:pointer;
  transition:all .16s var(--ease);
}
.tab:hover{border-color:var(--accent);color:var(--accent);}
.tab.is-active{background:var(--ink);color:#F7F5F1;border-color:var(--ink);}

.plan-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  margin-bottom:24px;
}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFC8BB;}
.plan-thumb{
  position:relative;
  overflow:hidden;
  aspect-ratio:3/2;
  background:var(--bg-soft);
}
.plan-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.plan-card:hover .plan-thumb img{transform:scale(1.03);}
.plan-body{
  padding:24px 26px 0;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  font-size:13px;
  line-height:1;
  color:var(--accent);
  background:var(--accent-soft);
  border:1px solid rgba(47,107,94,.28);
  border-radius:var(--r-pill);
  align-self:flex-start;
}
.plan-body h3{margin:0;font-size:20px;}
.plan-body p{margin:0;font-size:14px;color:var(--text-2);line-height:1.75;}
.plan-foot{
  margin-top:auto;
  padding:16px 26px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.plan-meta{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.04em;
}
.plan-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  min-height:44px;
}
.plan-link .arrow{transition:transform .16s var(--ease);display:inline-flex;}
.plan-link:hover,.plan-link:focus{color:var(--accent);}
.plan-link:hover .arrow{transform:translateX(4px);}
.plan-card-lg .plan-thumb{aspect-ratio:16/9;}
.plan-card-lg .plan-body h3{font-size:24px;}
.plan-card-lg .plan-body p{font-size:15px;}

/* =========================================================
   8. 评价轮播
   ========================================================= */
.review-section{background:var(--bg-soft);}
.testimonial-orbit{margin-top:8px;}
.orbit-controls{display:flex;justify-content:flex-end;gap:10px;margin-bottom:20px;}
.orbit-previous,.orbit-next{
  position:static;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:50%;
  background:var(--card);
  color:var(--ink);
  font-size:18px;
  line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .16s var(--ease),color .16s var(--ease);
  padding:0;
}
.orbit-previous:hover,.orbit-next:hover{border-color:var(--accent);color:var(--accent);}
.t-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  display:flex;
  flex-direction:column;
  gap:18px;
  height:100%;
  min-height:250px;
}
.t-mark{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.14em;
  color:var(--wheat);
  text-transform:uppercase;
}
.t-text{font-size:16px;line-height:1.8;color:var(--text);margin:0;}
.t-foot{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}
.t-avatar{
  width:40px;height:40px;border-radius:50%;
  background:var(--bg-soft);
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;color:var(--text-2);
  flex:0 0 40px;
}
.t-name{font-size:14px;font-weight:600;color:var(--ink);display:block;line-height:1.4;}
.t-role{font-size:12px;color:var(--text-3);display:block;line-height:1.4;}
.t-score{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--accent);
  letter-spacing:.06em;
  white-space:nowrap;
}
.orbit-bullets{display:flex;justify-content:center;gap:10px;margin-top:28px;}
.orbit-bullets button{
  width:10px;height:10px;
  border-radius:50%;
  background:transparent;
  border:1px solid var(--text-3);
  padding:0;
  margin:0;
  transition:background-color .16s var(--ease),border-color .16s var(--ease);
}
.orbit-bullets button:hover{border-color:var(--accent);}
.orbit-bullets button.is-active{background:var(--accent);border-color:var(--accent);}

/* =========================================================
   9. 保障条
   ========================================================= */
.assure{
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:36px 0;
}
.assure-list{display:flex;align-items:flex-start;flex-wrap:wrap;gap:0;}
.assure-item{
  flex:1 1 0;
  min-width:200px;
  padding:0 24px;
  border-left:1px solid var(--line);
}
.assure-item:first-child{border-left:0;padding-left:0;}
.assure-num{
  display:block;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:.1em;
  margin-bottom:8px;
}
.assure-title{display:block;font-size:14px;font-weight:700;color:var(--ink);margin-bottom:4px;}
.assure-desc{display:block;font-size:13px;color:var(--text-2);line-height:1.6;}

/* =========================================================
   10. 最新信息（CMS 区域）
   ========================================================= */
.latest-grid{
  display:grid;
  grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);
  gap:24px;
  align-items:stretch;
}
.latest-side{display:flex;flex-direction:column;gap:24px;}
.post-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  height:100%;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFC8BB;}
.post-thumb{display:block;overflow:hidden;aspect-ratio:3/2;background:var(--bg-soft);}
.post-card-lg .post-thumb{aspect-ratio:16/10;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-body h3{margin:0;font-size:22px;line-height:1.4;}
.post-card-sm .post-body{padding:18px 20px;gap:8px;}
.post-card-sm .post-body h3{font-size:17px;line-height:1.45;}
.post-summary{font-size:14px;color:var(--text-2);line-height:1.75;margin:0;}
.post-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.post-date{font-family:var(--font-mono);font-size:12px;color:var(--text-3);letter-spacing:.04em;}
.post-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);min-height:44px;}
.post-more .arrow{transition:transform .16s var(--ease);display:inline-flex;}
.post-card:hover .post-more{color:var(--accent);}
.post-card:hover .post-more .arrow{transform:translateX(4px);}
.post-card:hover .post-body h3{color:var(--accent);}
.post-rows{margin-top:24px;border-top:1px solid var(--line);}
.post-row{border-bottom:1px solid var(--line);}
.post-row a{
  display:flex;
  align-items:center;
  gap:16px;
  min-height:60px;
  padding:10px 0;
  color:var(--ink);
  transition:color .16s var(--ease);
}
.post-row a:hover{color:var(--accent);}
.post-row .row-date{font-family:var(--font-mono);font-size:12px;color:var(--text-3);flex:0 0 96px;}
.post-row .row-title{
  font-size:15px;
  font-weight:600;
  flex:1;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.post-row .row-cat{font-size:12px;color:var(--accent);background:var(--accent-soft);border-radius:var(--r-pill);padding:2px 10px;flex:0 0 auto;}
.cms-empty{
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  background:var(--card);
  min-height:280px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  text-align:center;
  padding:40px 24px;
}
.cms-empty .grid-icon{
  width:64px;height:64px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:
    linear-gradient(to right,var(--line) 1px,transparent 1px) 0 0/16px 16px,
    linear-gradient(to bottom,var(--line) 1px,transparent 1px) 0 0/16px 16px,
    var(--bg-soft);
}
.cms-empty p{font-size:14px;color:var(--text-2);margin:0;}

/* =========================================================
   11. CTA 条
   ========================================================= */
.cta-wrap{padding-top:0;padding-bottom:var(--section-y);}
.cta-box{
  background:var(--ink);
  color:#F7F5F1;
  border-radius:var(--r-lg);
  padding:64px 56px;
}
.cta-box h2{color:#F7F5F1;margin-bottom:14px;}
.cta-box .cta-sub{color:#B9B4AA;font-size:15px;margin:0;max-width:32em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;}
.cta-meta{
  margin-top:28px;
  padding-top:20px;
  border-top:1px solid var(--dark-line);
  display:flex;
  gap:32px;
  flex-wrap:wrap;
  font-family:var(--font-mono);
  font-size:12px;
  color:#B9B4AA;
  letter-spacing:.06em;
}

/* =========================================================
   12. FAQ
   ========================================================= */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-wrap .accordion{
  border:0;
  background:transparent;
  margin:0;
}
.faq-wrap .accordion-item{
  border:0;
  border-top:1px solid var(--line);
  background:transparent;
}
.faq-wrap .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-wrap .accordion-title{
  position:relative;
  padding:24px 56px 24px 0;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  border:0;
  background:transparent;
  line-height:1.5;
  transition:color .16s var(--ease);
}
.faq-wrap .accordion-title:hover{color:var(--accent);}
.faq-wrap .accordion-title::before{
  content:"";
  position:absolute;
  right:10px;
  top:50%;
  width:14px;
  height:1.5px;
  background:var(--accent);
  transform:translateY(-50%);
  float:none;
  padding:0;
  margin:0;
}
.faq-wrap .accordion-title::after{
  content:"";
  position:absolute;
  right:16.25px;
  top:50%;
  width:1.5px;
  height:14px;
  background:var(--accent);
  transform:translateY(-50%);
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-wrap .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(90deg);opacity:0;}
.faq-wrap .accordion-content{
  padding:0 56px 24px 0;
  border:0;
  background:transparent;
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
}
.faq-wrap .accordion-content p{margin:0;}
.faq-cta{text-align:center;margin-top:40px;}

/* =========================================================
   13. 页脚
   ========================================================= */
.site-footer{
  background:var(--ink);
  color:#F7F5F1;
  padding:72px 0 0;
}
.footer-brand-mark{font-size:22px;font-weight:700;letter-spacing:-.03em;color:#F7F5F1;line-height:1;}
.footer-brand{display:inline-flex;align-items:baseline;gap:8px;margin-bottom:16px;}
.footer-brand-sub{
  font-size:13px;color:#B9B4AA;letter-spacing:.14em;
  border-left:1px solid var(--dark-line);padding-left:8px;line-height:1;
}
.footer-desc{font-size:14px;color:#B9B4AA;line-height:1.8;margin:0 0 20px;max-width:26em;}
.footer-contact{
  font-family:var(--font-mono);
  font-size:13px;
  color:#B9B4AA;
  line-height:2;
  letter-spacing:.03em;
}
.footer-col h4{
  font-size:13px;
  color:#F7F5F1;
  letter-spacing:.14em;
  font-family:var(--font-mono);
  text-transform:uppercase;
  margin-bottom:18px;
  font-weight:500;
}
.footer-col ul{display:flex;flex-direction:column;gap:2px;}
.footer-col a{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  font-size:14px;
  color:#B9B4AA;
  transition:color .16s var(--ease);
}
.footer-col a:hover,.footer-col a:focus{color:#F7F5F1;}
.footer-sub-note{font-size:13px;color:#B9B4AA;line-height:1.8;margin-bottom:16px;}
.footer-form{display:flex;gap:10px;flex-wrap:wrap;}
.footer-form input{
  flex:1 1 160px;
  min-height:48px;
  padding:0 16px;
  font-size:14px;
  color:#F7F5F1;
  background:rgba(247,245,241,.06);
  border:1px solid var(--dark-line);
  border-radius:var(--r-md);
}
.footer-form input::placeholder{color:rgba(185,180,170,.75);}
.footer-form input:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(47,107,94,.28);
}
.footer-form .btn{min-height:48px;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid var(--dark-line);
  padding:24px 0 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#B9B4AA;
}
.footer-bottom p{margin:0;}
.footer-bottom .dot{display:inline-block;width:4px;height:4px;background:var(--accent);border-radius:50%;margin:0 8px;vertical-align:middle;}

/* =========================================================
   14. 入场动效
   ========================================================= */
.reveal-up{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal-up.is-in{opacity:1;transform:none;}

/* 移动端图集横向滚动（频道条） */
.scroll-hint{
  display:none;
  font-size:12px;
  color:var(--text-3);
  font-family:var(--font-mono);
  letter-spacing:.06em;
}

/* =========================================================
   15. 响应式
   ========================================================= */
@media screen and (max-width:1279px){
  :root{--section-y:80px;}
  .hero{padding-top:48px;padding-bottom:72px;}
}

@media screen and (max-width:1023px){
  :root{--section-y:72px;}
  .main-nav{gap:20px;}
  .nav-link{font-size:14px;}
  .header-actions .btn-primary{display:none;}
  .hero-copy{padding-right:0;margin-bottom:40px;}
  .hero h1{max-width:none;}
  .cta-box{padding:48px 36px;}
  .cta-actions{justify-content:flex-start;margin-top:28px;}
  .latest-grid{grid-template-columns:1fr;}
  .assure-item{flex:1 1 45%;margin-bottom:24px;}
  .assure-item:nth-child(3){border-left:0;padding-left:0;}
}

@media screen and (max-width:767px){
  :root{--section-y:56px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{height:60px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .brand-mark{font-size:20px;}
  .hero{padding-top:36px;padding-bottom:56px;min-height:auto;}
  .hero h1{font-size:clamp(28px,7vw,34px);}
  .hero-sub{font-size:15px;}
  .hero-actions{gap:12px;margin-bottom:32px;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-stats .stat{padding-right:18px;margin-right:18px;min-width:88px;}
  .stat-n{font-size:20px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .plan-body{padding:20px 20px 0;}
  .plan-foot{padding:14px 20px;}
  .plan-card-lg .plan-body h3{font-size:20px;}
  .t-card{padding:22px;min-height:auto;}
  .assure-item{flex:1 1 100%;padding:0 0 20px;border-left:0;margin-bottom:0;border-bottom:1px solid var(--line);}
  .assure-item:last-child{border-bottom:0;padding-bottom:0;}
  .cta-box{padding:36px 24px;border-radius:var(--r-lg);}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .site-footer{padding-top:56px;}
  .post-row .row-date{flex:0 0 74px;font-size:11px;}
  .post-row .row-cat{display:none;}
  .post-body{padding:20px;}
  .post-body h3{font-size:19px;}
  .post-card-sm .post-body h3{font-size:16px;}
}

@media screen and (max-width:479px){
  .hero-actions .btn-text{width:100%;justify-content:flex-start;}
  .hero-stats{flex-direction:column;gap:16px;}
  .hero-stats .stat{border-right:0;margin-right:0;padding-right:0;display:flex;align-items:baseline;gap:10px;}
  .stat-l{margin-top:0;}
  .filter-tabs{gap:8px;}
  .tab{font-size:13px;padding:0 12px;}
}

/* 减少动效 */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal-up{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* Foundation Orbit 兜底 */
.orbit-fallback .orbit-slide{display:block;position:static;opacity:1;margin-bottom:24px;width:100%;}
.orbit-fallback .orbit-controls,.orbit-fallback .orbit-bullets{display:none;}

/* roulang page: article */
/* ============================================================
   aoa线上平台 · 文章详情页样式系统
   ============================================================ */
:root{
  --ink:#1C1B18;
  --ink-2:#5A5750;
  --ink-3:#8A857C;
  --accent:#2F6B5E;
  --accent-dark:#245347;
  --accent-wash:#DCE6E1;
  --bg:#F7F5F1;
  --bg-soft:#EDE9E1;
  --card:#FFFFFF;
  --line:#DCD6CB;
  --sand:#C8B79B;
  --radius-s:4px;
  --radius-m:8px;
  --radius-l:14px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(28,27,24,.05);
  --shadow-2:0 12px 32px -12px rgba(28,27,24,.18);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --section:96px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,ul,ol,dl,dd{margin:0;}
ul,ol{padding-left:0;list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--accent);text-decoration:none;transition:color 160ms var(--ease);}
a:hover{color:var(--accent-dark);}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
::selection{background:var(--accent-wash);color:var(--ink);}

/* ---------- 容器与栅格 ---------- */
.grid-container{
  max-width:1240px;
  padding-left:32px;
  padding-right:32px;
  margin-left:auto;
  margin-right:auto;
}
.grid-container.full{max-width:100%;}
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x > .cell{margin-left:12px;margin-right:12px;}
body .grid-container .grid-x > .cell{width:auto;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  line-height:1;
  text-align:center;
  transition:background 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease),transform 160ms var(--ease);
}
.btn-primary{background:var(--accent);color:#F7F5F1;border-color:var(--accent);}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-dark);border-color:var(--accent-dark);color:#F7F5F1;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--bg-soft);border-color:var(--ink-3);color:var(--ink);}
.btn-light{background:transparent;color:#F7F5F1;border-color:rgba(247,245,241,.4);}
.btn-light:hover,.btn-light:focus{background:rgba(247,245,241,.1);border-color:#F7F5F1;color:#F7F5F1;}
.btn-sm{min-height:44px;padding:0 20px;font-size:14px;}
.btn-block{display:flex;width:100%;}
.btn .arrow{display:inline-block;transition:transform 160ms var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.95);
  border-bottom:1px solid transparent;
  transition:border-color 240ms var(--ease),background 240ms var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(247,245,241,.95);backdrop-filter:saturate(120%) blur(6px);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:72px;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  padding:6px 0;
  min-height:44px;
  color:var(--ink);
  flex-shrink:0;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  font-family:var(--font-sans);
  font-size:24px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--ink-2);
  border-left:1px solid var(--line);
  padding-left:10px;
  line-height:1.1;
}
.main-nav{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:15px;
  color:var(--ink-2);
  font-weight:500;
  transition:color 160ms var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:12px;
  height:2px;
  background:var(--accent);
  transition:left 160ms var(--ease),right 160ms var(--ease);
}
.nav-link:hover,.nav-link:focus{color:var(--accent);}
.nav-link:hover::after,.nav-link:focus::after{left:0;right:0;}
.nav-link.is-active{color:var(--accent);}
.nav-link.is-active::after{left:0;right:0;}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:var(--card);
  color:var(--ink);
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  display:block;
  width:18px;
  height:1.5px;
  background:var(--ink);
  border-radius:2px;
  content:"";
  position:relative;
  transition:transform 160ms var(--ease),opacity 160ms var(--ease);
}
.nav-toggle span::before{position:absolute;top:-6px;}
.nav-toggle span::after{position:absolute;top:6px;}

/* 抽屉 */
.nav-scrim{
  position:fixed;
  inset:0;
  background:rgba(28,27,24,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
  z-index:70;
}
.nav-scrim.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:min(330px,86vw);
  background:var(--bg);
  border-left:1px solid var(--line);
  padding:20px 20px 28px;
  display:flex;
  flex-direction:column;
  gap:20px;
  transform:translateX(102%);
  transition:transform 240ms var(--ease);
  z-index:80;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-title{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--ink-3);text-transform:uppercase;}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-m);
  background:var(--card);color:var(--ink);font-size:20px;line-height:1;
  display:flex;align-items:center;justify-content:center;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 4px;
  border-bottom:1px solid var(--line);
  color:var(--ink);
  font-size:16px;
  font-weight:500;
}
.drawer-nav a:hover,.drawer-nav a:focus{color:var(--accent);}
.drawer-nav a.is-active{color:var(--accent);}
.drawer-foot{margin-top:auto; display:flex; flex-direction:column; gap:12px;}
.drawer-note{font-size:13px;color:var(--ink-3);line-height:1.7;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding-top:24px;padding-bottom:8px;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  line-height:1.6;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink);}

/* ---------- 文章头 ---------- */
.article-head{
  padding-top:24px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  background:var(--accent-wash);
  color:var(--accent);
  border:1px solid rgba(47,107,94,.4);
  font-size:14px;
  line-height:1;
  font-weight:500;
}
.article-title{
  margin-top:20px;
  font-size:clamp(30px,4.4vw,48px);
  line-height:1.24;
  letter-spacing:-.02em;
  font-weight:700;
  max-width:900px;
}
.article-lead{
  margin-top:18px;
  max-width:760px;
  color:var(--ink-2);
  font-size:17px;
  line-height:1.85;
}
.article-meta{
  margin-top:24px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px 22px;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--ink-3);
  letter-spacing:.04em;
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px;}
.article-meta .meta-dot{
  width:5px;height:5px;background:var(--sand);border-radius:var(--radius-pill);display:inline-block;
}
.meta-divider{width:1px;height:14px;background:var(--line);display:inline-block;}

/* ---------- 正文布局 ---------- */
.article-layout{padding-top:48px;padding-bottom:var(--section);}
.article-main{max-width:820px;}

.article-body{
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
}
.article-body > * + *{margin-top:1em;}
.article-body h2{
  position:relative;
  margin-top:48px;
  margin-bottom:16px;
  padding-left:18px;
  font-size:clamp(24px,2.8vw,32px);
  line-height:1.3;
  letter-spacing:-.02em;
  font-weight:700;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.42em;
  width:4px;
  height:1.05em;
  background:var(--accent);
  border-radius:2px;
}
.article-body h3{
  margin-top:32px;
  margin-bottom:12px;
  font-size:20px;
  line-height:1.45;
  font-weight:700;
  letter-spacing:-.01em;
  scroll-margin-top:96px;
}
.article-body h4{
  margin-top:24px;
  margin-bottom:10px;
  font-size:17px;
  font-weight:700;
}
.article-body p{color:var(--ink);}
.article-body strong{font-weight:700;}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(47,107,94,.35);}
.article-body a:hover{color:var(--accent-dark);border-bottom-color:var(--accent-dark);}
.article-body ul,
.article-body ol{
  margin-top:16px;
  margin-bottom:16px;
  padding-left:0;
  line-height:1.8;
}
.article-body ul li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  color:var(--ink-2);
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:7px;
  height:7px;
  background:var(--accent);
  border-radius:1px;
}
.article-body ol{
  counter-reset:artlist;
  list-style:none;
}
.article-body ol li{
  position:relative;
  counter-increment:artlist;
  padding-left:36px;
  margin-bottom:10px;
  color:var(--ink-2);
}
.article-body ol li::before{
  content:counter(artlist,decimal-leading-zero);
  position:absolute;
  left:0;
  top:0;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:.06em;
}
.article-body blockquote{
  margin:28px 0;
  padding:20px 24px;
  border-left:3px solid var(--accent);
  background:var(--accent-wash);
  border-radius:0 var(--radius-m) var(--radius-m) 0;
  color:var(--ink-2);
  font-size:16px;
  line-height:1.85;
}
.article-body blockquote p{margin:0;color:var(--ink-2);}
.article-body blockquote p + p{margin-top:12px;}
.article-body figure{margin:28px 0;}
.article-body img{
  width:100%;
  border-radius:var(--radius-m);
  object-fit:cover;
  border:1px solid var(--line);
  background:var(--bg-soft);
}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--ink-3);
  line-height:1.7;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:28px 0;
  font-size:15px;
  line-height:1.7;
  border:1px solid var(--line);
  background:var(--card);
}
.article-body thead th{
  background:var(--bg-soft);
  color:var(--ink);
  font-weight:700;
  text-align:left;
  padding:14px 16px;
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.article-body tbody td{
  padding:14px 16px;
  border-bottom:1px solid var(--line);
  color:var(--ink-2);
  vertical-align:top;
}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body hr{
  border:0;
  border-top:1px solid var(--line);
  margin:40px 0;
}
.article-body code{
  font-family:var(--font-mono);
  font-size:14px;
  background:var(--bg-soft);
  padding:2px 6px;
  border-radius:var(--radius-s);
  color:var(--ink);
}

/* 空态 */
.article-empty{
  margin:8px 0 0;
  padding:56px 28px;
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  background:
    repeating-linear-gradient(0deg,transparent 0 23px,rgba(220,214,203,.55) 23px 24px),
    repeating-linear-gradient(90deg,transparent 0 23px,rgba(220,214,203,.55) 23px 24px),
    var(--bg-soft);
  text-align:center;
}
.article-empty .empty-title{font-size:20px;font-weight:700;color:var(--ink);}
.article-empty .empty-desc{
  margin:12px auto 24px;
  max-width:420px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
}

/* ---------- 侧栏 ---------- */
.article-aside{
  position:sticky;
  top:96px;
  align-self:flex-start;
}
.aside-block{
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  background:var(--card);
  padding:24px;
  box-shadow:var(--shadow-1);
}
.aside-block + .aside-block{margin-top:20px;}
.aside-title{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--ink-3);
  margin-bottom:16px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  padding:9px 12px 9px 14px;
  border-left:2px solid transparent;
  font-size:14px;
  line-height:1.6;
  color:var(--ink-2);
  transition:color 160ms var(--ease),border-color 160ms var(--ease),background 160ms var(--ease);
}
.toc-list a:hover{color:var(--accent);background:var(--bg);}
.toc-list a.is-current{color:var(--accent);border-left-color:var(--accent);font-weight:600;}
.toc-list a.lvl-3{padding-left:26px;font-size:13px;color:var(--ink-3);}
.aside-divider{height:1px;background:var(--line);margin:20px 0;}
.mini-card{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--line);}
.mini-card:last-child{border-bottom:0;padding-bottom:0;}
.mini-card:first-of-type{padding-top:0;}
.mini-thumb{
  flex:0 0 64px;
  width:64px;
  height:48px;
  border-radius:var(--radius-s);
  overflow:hidden;
  background:var(--bg-soft);
  border:1px solid var(--line);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease);}
.mini-card:hover .mini-thumb img{transform:scale(1.03);}
.mini-body{flex:1 1 auto;min-width:0;}
.mini-tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--accent);text-transform:uppercase;}
.mini-title{
  display:block;
  margin-top:4px;
  font-size:14px;
  line-height:1.55;
  color:var(--ink);
  font-weight:500;
}
.mini-card:hover .mini-title{color:var(--accent);}
.aside-cta{
  border-radius:var(--radius-l);
  background:var(--ink);
  color:#F7F5F1;
  padding:24px;
  margin-top:20px;
}
.aside-cta h3{font-size:17px;line-height:1.4;color:#F7F5F1;font-weight:700;}
.aside-cta p{margin-top:10px;font-size:13px;line-height:1.75;color:#B9B4AA;}
.aside-cta .btn{margin-top:18px;}

/* ---------- 相关推荐 ---------- */
.related-section{
  padding-top:var(--section);
  padding-bottom:var(--section);
  border-top:1px solid var(--line);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:40px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--ink-3);
}
.eyebrow::before{
  content:"";
  width:20px;
  height:4px;
  background:var(--accent);
  border-radius:2px;
}
.section-title{
  margin-top:14px;
  font-size:clamp(24px,3vw,32px);
  line-height:1.28;
  letter-spacing:-.02em;
  font-weight:700;
}
.section-desc{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:620px;line-height:1.8;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  font-size:15px;
  font-weight:600;
  color:var(--accent);
}
.link-arrow .arrow{transition:transform 160ms var(--ease);}
.link-arrow:hover .arrow{transform:translateX(4px);}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFC7BA;}
.related-cover{
  position:relative;
  aspect-ratio:3/2;
  overflow:hidden;
  background:var(--bg-soft);
}
.related-cover img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease);}
.related-card:hover .related-cover img{transform:scale(1.03);}
.related-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.related-body .badge{align-self:flex-start;}
.related-title{
  font-size:18px;
  line-height:1.45;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  transition:color 160ms var(--ease);
}
.related-card:hover .related-title{color:var(--accent);}
.related-desc{font-size:14px;line-height:1.75;color:var(--ink-2);}
.related-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--ink-3);
}
.related-foot .arrow{color:var(--accent);transition:transform 160ms var(--ease);font-size:15px;}
.related-card:hover .related-foot .arrow{transform:translateX(4px);}

/* ---------- 返回栏目 ---------- */
.back-bar{
  padding-bottom:var(--section);
}
.back-bar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  padding:24px 28px;
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  background:var(--bg-soft);
}
.back-bar-inner p{font-size:15px;color:var(--ink-2);}
.back-bar-inner .btn{flex-shrink:0;}

/* ---------- CTA ---------- */
.cta-wrap{padding-bottom:var(--section);}
.cta-card{
  border-radius:var(--radius-l);
  background:var(--ink);
  color:#F7F5F1;
  padding:64px 56px;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:40px;
  align-items:center;
}
.cta-card h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.32;
  letter-spacing:-.02em;
  font-weight:700;
  color:#F7F5F1;
}
.cta-card p{margin-top:14px;font-size:15px;line-height:1.8;color:#B9B4AA;max-width:520px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#F7F5F1;
  padding-top:72px;
  padding-bottom:0;
}
.site-footer .grid-container{padding-bottom:0;}
.footer-brand{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  color:#F7F5F1;
  padding:6px 0;
  min-height:44px;
}
.footer-brand:hover{color:#F7F5F1;}
.footer-brand-mark{font-size:24px;font-weight:700;letter-spacing:-.02em;line-height:1;}
.footer-brand-sub{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:#B9B4AA;
  border-left:1px solid rgba(247,245,241,.14);
  padding-left:10px;
}
.footer-desc{margin-top:18px;font-size:15px;line-height:1.8;color:#B9B4AA;max-width:320px;}
.footer-contact{
  margin-top:22px;
  font-family:var(--font-mono);
  font-size:13px;
  line-height:2;
  color:#B9B4AA;
  letter-spacing:.02em;
}
.footer-col h4{
  font-size:13px;
  color:#F7F5F1;
  letter-spacing:.14em;
  font-family:var(--font-mono);
  text-transform:uppercase;
  margin-bottom:18px;
  font-weight:500;
}
.footer-col ul{display:flex;flex-direction:column;gap:2px;}
.footer-col li a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:15px;
  color:#B9B4AA;
  transition:color 160ms var(--ease);
}
.footer-col li a:hover,.footer-col li a:focus{color:#F7F5F1;}
.footer-sub-note{font-size:14px;line-height:1.8;color:#B9B4AA;margin-bottom:16px;}
.footer-form{display:flex;gap:10px;align-items:center;}
.footer-form input{
  flex:1 1 auto;
  min-width:0;
  height:48px;
  padding:0 16px;
  border-radius:var(--radius-m);
  border:1px solid rgba(247,245,241,.2);
  background:rgba(247,245,241,.06);
  color:#F7F5F1;
  font-size:14px;
}
.footer-form input::placeholder{color:rgba(185,180,170,.8);}
.footer-form input:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(47,107,94,.28);
}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(247,245,241,.14);
  padding:24px 0 32px;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:#B9B4AA;
  line-height:1.8;
}
.footer-bottom .dot{
  display:inline-block;
  width:5px;height:5px;
  background:#B9B4AA;
  border-radius:var(--radius-pill);
  margin:0 10px;
  vertical-align:middle;
}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 480ms var(--ease),transform 480ms var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  .grid-container{padding-left:28px;padding-right:28px;}
  .main-nav{gap:24px;}
}

@media screen and (max-width:1023px){
  :root{--section:72px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .article-aside{position:static;margin-top:48px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-card{grid-template-columns:1fr;padding:48px 36px;}
  .cta-actions{justify-content:flex-start;}
  .article-main{max-width:100%;}
}

@media screen and (max-width:767px){
  :root{--section:56px;}
  body{font-size:15px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{min-height:60px;}
  .brand-mark{font-size:21px;}
  .brand-sub{font-size:11px;letter-spacing:.12em;}
  .article-title{font-size:clamp(26px,7vw,32px);}
  .article-lead{font-size:15px;}
  .article-layout{padding-top:32px;}
  .article-body{font-size:15px;line-height:1.85;}
  .article-body blockquote{padding:16px 18px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .related-grid{grid-template-columns:1fr;}
  .back-bar-inner{flex-direction:column;align-items:flex-start;}
  .cta-card{padding:40px 24px;border-radius:var(--radius-l);}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .site-footer{padding-top:56px;}
  .footer-form{flex-direction:column;align-items:stretch;}
  .footer-form .btn{width:100%;}
  .footer-bottom{flex-direction:column;margin-top:40px;}
}

@media screen and (max-width:479px){
  .article-meta{gap:10px 14px;font-size:12px;}
  .badge{font-size:13px;padding:0 10px;}
  .section-head{gap:12px;}
  .aside-block{padding:20px;}
}

/* roulang page: category1 */
/* ============================================================
   1. 设计变量
   ============================================================ */
:root{
  --ink:#1C1B18;
  --ink-2:#5A5750;
  --ink-3:#8A857C;
  --bg:#F7F5F1;
  --bg-soft:#EDE9E1;
  --card:#FFFFFF;
  --accent:#2F6B5E;
  --accent-deep:#245347;
  --accent-tint:#DCE6E1;
  --line:#DCD6CB;
  --sand:#C8B79B;
  --dark:#1C1B18;
  --dark-text:#F7F5F1;
  --dark-sub:#B9B4AA;
  --dark-line:rgba(247,245,241,.14);

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --r-4:4px;
  --r-8:8px;
  --r-14:14px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(28,27,24,.05);
  --sh-2:0 12px 32px -12px rgba(28,27,24,.18);

  --ease:cubic-bezier(.2,.7,.2,1);
  --t-fast:160ms;
  --t-card:240ms;
  --t-in:480ms;

  --container:1240px;
  --pad-d:32px;
  --pad-m:20px;
}

/* ============================================================
   2. 基础重置
   ============================================================ */
*,
*::before,
*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

body.drawer-open{overflow:hidden;}

h1,h2,h3,h4,h5,p,figure,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;height:auto;}
button{font-family:inherit;font-size:inherit;border:0;background:none;}
a{
  color:var(--accent);
  text-decoration:none;
  transition:color var(--t-fast) var(--ease);
}
a:hover,
a:focus{color:var(--accent-deep);}
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:var(--r-4);
}

/* 覆盖 Foundation 容器与默认链接 */
.grid-container{
  max-width:var(--container);
  padding-left:var(--pad-d);
  padding-right:var(--pad-d);
  margin-left:auto;
  margin-right:auto;
}
.row-no-gap{margin-left:0;margin-right:0;}

/* ============================================================
   3. 通用排版元件
   ============================================================ */
h1,h2,h3,h4{
  font-weight:700;
  color:var(--ink);
  line-height:1.22;
}

h1{
  font-size:clamp(30px,4.4vw,52px);
  letter-spacing:-.02em;
  line-height:1.16;
}

h2{
  font-size:clamp(24px,3vw,32px);
  letter-spacing:-.02em;
}

h3{
  font-size:clamp(19px,2vw,22px);
  letter-spacing:-.01em;
}

p{max-width:760px;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-3);
}
.eyebrow::before{
  content:"";
  display:block;
  width:24px;
  height:4px;
  background:var(--accent);
  border-radius:1px;
}

.sec-index{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.14em;
  color:var(--accent);
  margin-bottom:14px;
}

.lead-text{
  font-size:clamp(16px,1.8vw,18px);
  line-height:1.75;
  color:var(--ink-2);
}

.muted{color:var(--ink-2);}
.small-note{font-size:13px;color:var(--ink-3);}

.divider{
  height:1px;
  background:var(--line);
  border:0;
  margin:0;
}

/* ============================================================
   4. 按钮与文字链接
   ============================================================ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  letter-spacing:.01em;
  cursor:pointer;
  white-space:nowrap;
  transition:background var(--t-fast) var(--ease),
             color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),
             box-shadow var(--t-fast) var(--ease),
             transform var(--t-fast) var(--ease);
}
.btn:active{transform:translateY(1px);}

.btn-primary{
  background:var(--accent);
  color:#F7F5F1;
}
.btn-primary:hover,
.btn-primary:focus{
  background:var(--accent-deep);
  color:#FFFFFF;
}

.btn-outline{
  background:transparent;
  border-color:var(--line);
  color:var(--ink);
}
.btn-outline:hover,
.btn-outline:focus{
  border-color:var(--accent);
  color:var(--accent);
  background:var(--accent-tint);
}

.btn-on-dark{
  background:var(--accent);
  color:#F7F5F1;
}
.btn-on-dark:hover,
.btn-on-dark:focus{background:#3A7F6F;color:#FFFFFF;}

.btn-ghost-dark{
  background:transparent;
  border-color:rgba(247,245,241,.4);
  color:#F7F5F1;
}
.btn-ghost-dark:hover,
.btn-ghost-dark:focus{
  border-color:#F7F5F1;
  color:#FFFFFF;
  background:rgba(247,245,241,.08);
}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  font-size:15px;
  font-weight:600;
  color:var(--accent);
}
.link-arrow span{
  display:inline-block;
  transition:transform var(--t-fast) var(--ease);
}
.link-arrow:hover span,
.link-arrow:focus span{transform:translateX(4px);}

/* ============================================================
   5. 顶部导航
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.95);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-fast) var(--ease),
             box-shadow var(--t-fast) var(--ease);
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(28,27,24,.02);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  height:72px;
}

.brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  min-height:44px;
  padding-top:10px;
  color:var(--ink);
  flex:none;
}
.brand:hover,
.brand:focus{color:var(--ink);}

.brand-mark{
  font-size:23px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
}
.brand-sub{
  font-size:12px;
  line-height:1;
  letter-spacing:.16em;
  color:var(--ink-2);
  padding-bottom:1px;
}

.main-nav{
  display:flex;
  align-items:center;
  gap:30px;
  margin-left:auto;
}

.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:15px;
  color:var(--ink-2);
  transition:color var(--t-fast) var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:12px;
  height:2px;
  background:var(--accent);
  border-radius:1px;
  transition:left var(--t-fast) var(--ease),
             right var(--t-fast) var(--ease);
}
.nav-link:hover,
.nav-link:focus{color:var(--accent);}
.nav-link:hover::after,
.nav-link:focus::after,
.nav-link.is-active::after,
.nav-link.is-active:hover::after{left:0;right:0;}
.nav-link.is-active{color:var(--accent);}

.header-cta{
  flex:none;
  min-height:44px;
  padding:0 22px;
  font-size:14px;
}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  padding:0 11px;
  border-radius:var(--r-8);
  border:1px solid var(--line);
  background:var(--card);
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:100%;
  height:2px;
  border-radius:1px;
  background:var(--ink);
  transition:transform var(--t-fast) var(--ease),
             opacity var(--t-fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 移动端抽屉 */
.mobile-drawer{
  display:none;
  position:fixed;
  left:0;
  right:0;
  top:60px;
  bottom:0;
  z-index:55;
  background:var(--bg);
  padding:8px var(--pad-m) 40px;
  overflow-y:auto;
  border-top:1px solid var(--line);
}
.mobile-drawer.is-open{display:block;}

.drawer-nav{
  display:flex;
  flex-direction:column;
  margin-bottom:28px;
}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:48px;
  font-size:16px;
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--accent);font-weight:600;}
.drawer-nav a:hover{color:var(--accent);}

.drawer-cta{
  width:100%;
}

/* ============================================================
   6. 面包屑
   ============================================================ */
.crumb-bar{
  padding-top:24px;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  line-height:1.6;
  color:var(--ink-3);
}
.breadcrumb a{
  color:var(--ink-3);
  min-height:24px;
  display:inline-flex;
  align-items:center;
}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink);font-weight:500;}

/* ============================================================
   7. 分类页头
   ============================================================ */
.cat-hero{
  padding:40px 0 88px;
}
.cat-hero h1{margin:20px 0 20px;}
.hero-lead{
  font-size:clamp(16px,1.9vw,18px);
  line-height:1.8;
  color:var(--ink-2);
  max-width:34em;
}
.hero-meta-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 14px;
  margin-top:24px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--ink-3);
}
.hero-meta-line .bar{
  width:1px;
  height:12px;
  background:var(--line);
}

.hero-stats{
  display:flex;
  flex-wrap:wrap;
  align-items:stretch;
  gap:0;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-stats .stat{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding-right:28px;
  margin-right:28px;
  border-right:1px solid var(--line);
}
.hero-stats .stat:last-child{
  border-right:0;
  margin-right:0;
  padding-right:0;
}
.stat-num{
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:600;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--ink);
}
.stat-label{
  font-size:12.5px;
  line-height:1.4;
  color:var(--ink-3);
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px 22px;
  margin-top:32px;
}

.hero-media{
  position:relative;
  border-radius:var(--r-8);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-soft);
  aspect-ratio:5/4;
  margin-top:8px;
}
.hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.hero-media::after{
  content:"";
  position:absolute;
  right:0;
  bottom:0;
  width:56px;
  height:56px;
  background:var(--accent);
  opacity:.92;
}

/* ============================================================
   8. 图文交错板块
   ============================================================ */
.alt-section{
  padding:0 0 24px;
}
.alt-block{
  padding:80px 0;
  border-top:1px solid var(--line);
}
.alt-block:first-child{border-top:1px solid var(--line);}

.alt-media{
  position:relative;
  border-radius:var(--r-8);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-soft);
  aspect-ratio:4/3;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t-card) var(--ease),
             transform var(--t-card) var(--ease);
}
.alt-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform var(--t-card) var(--ease);
}
.alt-block:hover .alt-media{
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
}
.alt-block:hover .alt-media img{
  transform:scale(1.03);
}

.alt-text h2{margin-bottom:18px;}
.alt-text p{
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  margin-bottom:14px;
}

.point-list{
  margin:22px 0 24px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.point-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  line-height:1.7;
  color:var(--ink);
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:7px;
  height:7px;
  background:var(--accent);
  border-radius:1px;
}

.alt-block.is-flipped .alt-media{
  box-shadow:var(--sh-1);
}

/* ============================================================
   9. 规格清单
   ============================================================ */
.spec-section{
  padding:88px 0;
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.spec-section h2{margin:16px 0 16px;}
.section-note{
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
  max-width:30em;
}

.spec-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 48px;
  margin-top:4px;
}
.spec-item{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.spec-key{
  font-size:14px;
  line-height:1.6;
  color:var(--ink-2);
  flex:none;
}
.spec-val{
  font-family:var(--font-mono);
  font-size:14px;
  line-height:1.6;
  color:var(--ink);
  text-align:right;
  letter-spacing:.01em;
}

/* ============================================================
   10. FAQ
   ============================================================ */
.faq-section{
  padding:88px 0;
}
.faq-head{
  margin-bottom:32px;
}
.faq-wrap{
  max-width:880px;
}
.faq-item{
  border-top:1px solid var(--line);
}
.faq-item:last-child{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:64px;
  padding:20px 0;
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink);
  list-style:none;
  cursor:pointer;
  transition:color var(--t-fast) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-item summary:hover{color:var(--accent);}
.faq-item[open] summary{color:var(--accent);}

.faq-plus{
  position:relative;
  flex:none;
  width:16px;
  height:16px;
}
.faq-plus::before,
.faq-plus::after{
  content:"";
  position:absolute;
  background:var(--ink-2);
  transition:transform var(--t-card) var(--ease),
             opacity var(--t-card) var(--ease),
             background var(--t-fast) var(--ease);
}
.faq-plus::before{left:0;right:0;top:7.5px;height:1px;}
.faq-plus::after{top:0;bottom:0;left:7.5px;width:1px;}
.faq-item[open] .faq-plus::after{transform:rotate(90deg);opacity:0;}
.faq-item[open] .faq-plus::before{background:var(--accent);}

.faq-body{
  padding:0 0 26px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:760px;
}

/* ============================================================
   11. 深色 CTA 条
   ============================================================ */
.cta-section{
  padding:0 0 96px;
}
.cta-band{
  background:var(--dark);
  border-radius:var(--r-14);
  padding:56px 48px;
  color:var(--dark-text);
}
.cta-band h2{
  color:var(--dark-text);
  font-size:clamp(22px,2.6vw,30px);
  letter-spacing:-.02em;
  margin-bottom:14px;
}
.cta-band p{
  color:var(--dark-sub);
  font-size:15px;
  line-height:1.8;
  max-width:26em;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:flex-end;
}
.cta-meta{
  margin-top:26px;
  padding-top:22px;
  border-top:1px solid var(--dark-line);
  display:flex;
  flex-wrap:wrap;
  gap:10px 28px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--dark-sub);
}

/* ============================================================
   12. 页脚
   ============================================================ */
.site-footer{
  background:var(--dark);
  color:var(--dark-text);
  padding:72px 0 0;
  margin-top:0;
}
.site-footer h4{
  color:var(--dark-text);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  margin-bottom:18px;
}
.footer-brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  min-height:44px;
  padding-top:8px;
  color:var(--dark-text);
  margin-bottom:18px;
}
.footer-brand:hover,
.footer-brand:focus{color:#FFFFFF;}
.footer-brand-mark{
  font-size:23px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
}
.footer-brand-sub{
  font-size:12px;
  line-height:1;
  letter-spacing:.16em;
  color:var(--dark-sub);
}
.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:var(--dark-sub);
  max-width:22em;
  margin-bottom:22px;
}
.footer-contact{
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:2;
  letter-spacing:.02em;
  color:var(--dark-sub);
}

.footer-col{margin-bottom:32px;}
.footer-col ul{display:flex;flex-direction:column;gap:2px;}
.footer-col a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:14px;
  color:var(--dark-sub);
}
.footer-col a:hover,
.footer-col a:focus{color:var(--dark-text);}

.footer-sub-note{
  font-size:14px;
  line-height:1.8;
  color:var(--dark-sub);
  margin-bottom:18px;
  max-width:26em;
}
.footer-form{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:0;
}
.footer-form input{
  flex:1 1 170px;
  min-width:0;
  height:48px;
  padding:0 16px;
  border-radius:var(--r-8);
  border:1px solid rgba(247,245,241,.24);
  background:transparent;
  color:var(--dark-text);
  font-size:14px;
  font-family:var(--font-sans);
  margin:0;
  transition:border-color var(--t-fast) var(--ease),
             box-shadow var(--t-fast) var(--ease);
}
.footer-form input::placeholder{color:#8C887F;}
.footer-form input:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(47,107,94,.28);
}
.footer-form .btn{
  min-height:48px;
  flex:none;
}

.footer-bottom{
  margin-top:56px;
  padding:26px 0 30px;
  border-top:1px solid var(--dark-line);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 32px;
  font-size:13px;
  line-height:1.7;
  color:var(--dark-sub);
}
.footer-bottom p{margin:0;max-width:none;}
.footer-bottom .dot{
  display:inline-block;
  width:4px;
  height:4px;
  margin:0 10px;
  border-radius:50%;
  background:var(--dark-sub);
  vertical-align:middle;
}

/* ============================================================
   13. 入场动效
   ============================================================ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity var(--t-in) var(--ease),
             transform var(--t-in) var(--ease);
}
.reveal.is-visible{
  opacity:1;
  transform:none;
}

/* ============================================================
   14. 响应式
   ============================================================ */
@media screen and (max-width:1024px){
  :root{--pad-d:24px;}
  .main-nav{gap:20px;}
  .nav-link{font-size:14px;}
  .header-cta{padding:0 18px;font-size:13px;}
  .cat-hero{padding:32px 0 64px;}
  .alt-block{padding:64px 0;}
  .spec-section{padding:72px 0;}
  .faq-section{padding:72px 0;}
  .cta-section{padding-bottom:72px;}
  .cta-band{padding:44px 36px;}
}

@media screen and (max-width:768px){
  :root{--pad-d:20px;}
  body{font-size:15px;}

  .header-inner{height:60px;gap:16px;}
  .brand-mark{font-size:20px;}
  .brand-sub{font-size:11px;}
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:flex;}

  .crumb-bar{padding-top:20px;}

  .cat-hero{padding:24px 0 48px;}
  .cat-hero h1{margin:16px 0 16px;}
  .hero-actions{margin-top:26px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-actions .link-arrow{min-height:44px;}
  .hero-stats{margin-top:28px;padding-top:20px;}
  .hero-stats .stat{padding-right:18px;margin-right:18px;}
  .stat-num{font-size:22px;}
  .hero-media{margin-top:28px;aspect-ratio:16/10;}

  .alt-block{padding:48px 0;}
  .alt-text{margin-top:26px;}
  .alt-block.is-flipped .alt-text{margin-top:26px;}
  .alt-media{aspect-ratio:16/10;}

  .spec-section{padding:56px 0;}
  .spec-list{grid-template-columns:1fr;gap:0;margin-top:26px;}
  .spec-item{padding:16px 0;}

  .faq-section{padding:56px 0;}
  .faq-item summary{font-size:16px;min-height:56px;padding:18px 0;}
  .faq-body{font-size:15px;padding-bottom:22px;}

  .cta-section{padding-bottom:56px;}
  .cta-band{padding:36px 24px;border-radius:var(--r-14);}
  .cta-actions{justify-content:flex-start;margin-top:26px;}
  .cta-actions .btn{flex:1 1 100%;}
  .cta-meta{margin-top:22px;padding-top:18px;gap:8px 18px;}

  .site-footer{padding:56px 0 0;}
  .footer-bottom{margin-top:36px;padding:20px 0 26px;flex-direction:column;}
  .footer-col{margin-bottom:24px;}
  .footer-form .btn{flex:1 1 100%;}
}

@media screen and (max-width:480px){
  .brand-sub{padding-bottom:0;}
  .hero-meta-line{gap:6px 10px;font-size:12px;}
  .stat-num{font-size:20px;}
  .stat-label{font-size:12px;}
  .hero-stats .stat{padding-right:14px;margin-right:14px;}
  .cta-band{padding:30px 20px;}
  .footer-contact{font-size:12px;line-height:1.9;}
}

/* ============================================================
   15. 动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none;}
  .alt-block:hover .alt-media,
  .alt-block:hover .alt-media img,
  .link-arrow:hover span{transform:none;}
}

/* roulang page: category2 */
/* ============================================================
   aoa线上平台 — 站点视觉系统
   1. 设计变量  2. 基础重置  3. 布局容器  4. 头部导航
   5. 按钮与标签 6. 页头  7. 流程条  8. 宽卡与手风琴
   9. 保障条 10. 清单 11. CTA 12. 页脚 13. 动效 14. 响应式
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink:#1C1B18;
  --accent:#2F6B5E;
  --accent-dark:#245347;
  --accent-wash:#DCE6E1;
  --bg:#F7F5F1;
  --bg-soft:#EDE9E1;
  --card:#FFFFFF;
  --text:#1C1B18;
  --text-2:#5A5750;
  --text-3:#8A857C;
  --line:#DCD6CB;
  --sand:#C8B79B;
  --dark-line:rgba(247,245,241,.14);
  --dark-text-2:#B9B4AA;

  --radius-s:4px;
  --radius-m:8px;
  --radius-l:14px;
  --radius-pill:999px;

  --shadow-1:0 1px 2px rgba(28,27,24,.05);
  --shadow-2:0 12px 32px -12px rgba(28,27,24,.18);

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --ease:cubic-bezier(.2,.7,.2,1);
  --section-py:96px;
  --container:1240px;
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

body.no-scroll{overflow:hidden;}

h1,h2,h3,h4,h5,h6{
  margin:0 0 16px;
  color:var(--ink);
  font-family:var(--font-sans);
  font-weight:700;
  line-height:1.24;
}

h1{font-size:clamp(30px,4.1vw,52px);letter-spacing:-.02em;line-height:1.18;}
h2{font-size:clamp(24px,2.7vw,32px);letter-spacing:-.02em;line-height:1.26;}
h3{font-size:20px;line-height:1.35;letter-spacing:-.01em;}
h4{font-size:16px;line-height:1.5;}

p{margin:0 0 1em;color:var(--text-2);line-height:1.8;}
p:last-child{margin-bottom:0;}

ul,ol{margin:0;padding:0;list-style:none;}

img{max-width:100%;height:auto;display:block;}

a{
  color:var(--accent);
  text-decoration:none;
  transition:color .16s var(--ease);
}
a:hover,
a:focus{color:var(--accent-dark);}

button{
  font-family:inherit;
  font-size:inherit;
  cursor:pointer;
}

figure{margin:0;}

/* 覆盖 Foundation 默认表单外观 */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="search"],
textarea,
select{
  height:48px;
  margin:0 0 0;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:var(--card);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:15px;
  line-height:46px;
  box-shadow:none;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
input[type="search"]:focus,
textarea:focus,
select:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(47,107,94,.18);
  background:var(--card);
}
::placeholder{color:var(--text-3);opacity:1;}

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

/* ---------- 3. 布局容器 ---------- */
.grid-container{
  width:100%;
  max-width:var(--container);
  margin-left:auto;
  margin-right:auto;
  padding-left:32px;
  padding-right:32px;
}

.section{
  padding-top:var(--section-py);
  padding-bottom:var(--section-py);
}

.section-tight{padding-top:72px;padding-bottom:72px;}

.section-soft{background:var(--bg-soft);}

.section-head{max-width:760px;margin-bottom:48px;}

.section-head h2{margin-bottom:14px;}

.section-desc{
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  max-width:720px;
}

.eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-3);
  line-height:1.4;
}

.eyebrow-dash{
  display:inline-block;
  width:24px;
  height:4px;
  border-radius:2px;
  background:var(--accent);
  flex:0 0 auto;
}

.rule{
  height:1px;
  background:var(--line);
  border:0;
  margin:0;
}

/* ---------- 4. 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.95);
  border-bottom:1px solid transparent;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}

.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}

.brand{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  flex:0 0 auto;
  color:var(--ink);
  text-decoration:none;
}
.brand:hover,
.brand:focus{color:var(--ink);}

.brand-mark{
  font-size:24px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
}

.brand-sub{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-2);
  line-height:1;
}

.main-nav{
  display:flex;
  align-items:center;
  gap:32px;
  flex-wrap:nowrap;
}

.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .16s var(--ease);
}

.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:8px;
  height:2px;
  background:var(--accent);
  transition:left .16s var(--ease),right .16s var(--ease);
}

.nav-link:hover,
.nav-link:focus{color:var(--accent);}
.nav-link:hover::after,
.nav-link:focus::after{left:0;right:0;}

.nav-link.is-active{color:var(--accent);}
.nav-link.is-active::after{left:0;right:0;}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  padding:0 10px;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:transparent;
  transition:border-color .16s var(--ease);
}
.nav-toggle span{
  display:block;
  width:100%;
  height:1.5px;
  background:var(--ink);
  transition:background .16s var(--ease);
}
.nav-toggle:hover,
.nav-toggle:focus{border-color:var(--accent);}
.nav-toggle:hover span,
.nav-toggle:focus span{background:var(--accent);}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
  flex-direction:column;
  background:var(--bg);
  overflow-y:auto;
  -webkit-overflow-scrolling:touch;
}
.mobile-drawer.is-open{display:flex;}

.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:62px;
  padding:0 20px;
  border-bottom:1px solid var(--line);
}

.drawer-close{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:transparent;
  color:var(--ink);
  font-size:18px;
  line-height:1;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.drawer-close:hover,
.drawer-close:focus{border-color:var(--accent);color:var(--accent);}

.drawer-nav{display:flex;flex-direction:column;}

.drawer-link{
  display:flex;
  align-items:center;
  min-height:56px;
  padding:0 20px;
  font-size:16px;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--accent);}

.drawer-footer{
  margin-top:auto;
  padding:24px 20px 32px;
  border-top:1px solid var(--line);
}
.drawer-footer p{
  font-size:13px;
  color:var(--text-3);
  margin-bottom:14px;
}

/* ---------- 5. 按钮与标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:500;
  line-height:1;
  text-align:center;
  text-decoration:none;
  cursor:pointer;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease),box-shadow .16s var(--ease);
}

.btn-primary{
  background:var(--accent);
  border-color:var(--accent);
  color:#F7F5F1;
}
.btn-primary:hover,
.btn-primary:focus{
  background:var(--accent-dark);
  border-color:var(--accent-dark);
  color:#F7F5F1;
  transform:translateY(-1px);
  box-shadow:var(--shadow-2);
}

.btn-outline{
  background:transparent;
  border-color:var(--line);
  color:var(--ink);
}
.btn-outline:hover,
.btn-outline:focus{
  border-color:var(--accent);
  color:var(--accent);
  background:transparent;
}

.btn-ghost-light{
  background:transparent;
  border-color:rgba(247,245,241,.4);
  color:#F7F5F1;
}
.btn-ghost-light:hover,
.btn-ghost-light:focus{
  border-color:#F7F5F1;
  color:#F7F5F1;
  background:rgba(247,245,241,.08);
}

.btn-sm{
  min-height:44px;
  padding:0 20px;
  font-size:14px;
}

.btn .arrow{
  display:inline-block;
  transition:transform .16s var(--ease);
}
.btn:hover .arrow,
.btn:focus .arrow{transform:translateX(4px);}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:44px;
  font-size:15px;
  font-weight:500;
  color:var(--accent);
}
.link-arrow .arrow{transition:transform .16s var(--ease);}
.link-arrow:hover .arrow,
.link-arrow:focus .arrow{transform:translateX(4px);}

.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border:1px solid rgba(47,107,94,.4);
  border-radius:var(--radius-pill);
  background:var(--accent-wash);
  color:var(--accent);
  font-size:13px;
  font-weight:500;
  line-height:1;
  white-space:nowrap;
}

.mono{
  font-family:var(--font-mono);
  letter-spacing:.02em;
}

/* ---------- 6. 面包屑与页头 ---------- */
.breadcrumb{
  padding:24px 0 0;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover,
.breadcrumb a:focus{color:var(--accent);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--text);}

.page-head{
  padding-top:40px;
  padding-bottom:72px;
}

.page-head h1{margin-bottom:18px;max-width:14em;}

.page-lead{
  font-size:18px;
  line-height:1.75;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:32px;
}

.stat-row{
  display:flex;
  flex-wrap:wrap;
  align-items:stretch;
  gap:0;
  margin-top:8px;
}

.stat{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:0 28px;
  border-left:1px solid var(--line);
}
.stat:first-child{padding-left:0;border-left:0;}

.stat-num{
  font-family:var(--font-mono);
  font-size:22px;
  font-weight:500;
  color:var(--ink);
  letter-spacing:-.01em;
  line-height:1.3;
}

.stat-label{
  font-size:13px;
  color:var(--text-3);
  line-height:1.4;
}

.head-figure{
  position:relative;
  border-radius:var(--radius-m);
  overflow:hidden;
  background:var(--bg-soft);
  aspect-ratio:5/3;
  box-shadow:var(--shadow-1);
}
.head-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.head-figure::after{
  content:"";
  position:absolute;
  right:20px;
  bottom:0;
  width:56px;
  height:8px;
  background:var(--accent);
  border-radius:2px 2px 0 0;
}

/* ---------- 7. 流程条 ---------- */
.flow-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.flow-step{
  position:relative;
  padding:36px 24px 32px;
  border-right:1px solid var(--line);
}
.flow-step:last-child{border-right:0;}

.flow-step::before{
  content:"";
  position:absolute;
  top:-2px;
  left:24px;
  width:32px;
  height:3px;
  background:var(--accent);
  border-radius:2px;
}

.flow-num{
  display:block;
  font-family:var(--font-mono);
  font-size:28px;
  font-weight:500;
  letter-spacing:-.02em;
  color:var(--accent);
  line-height:1.2;
  margin-bottom:12px;
}

.flow-title{
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  margin:0 0 10px;
  line-height:1.4;
}

.flow-text{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  margin:0 0 16px;
}

.flow-deliver{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-3);
  line-height:1.4;
}
.flow-deliver::before{
  content:"";
  width:6px;
  height:6px;
  background:var(--sand);
  border-radius:1px;
  flex:0 0 auto;
}

/* ---------- 8. 宽卡与手风琴 ---------- */
.step-card{
  padding:56px 0;
  border-bottom:1px solid var(--line);
}
.step-card:first-of-type{padding-top:8px;}
.step-card:last-of-type{border-bottom:0;padding-bottom:8px;}

.card-media{
  position:relative;
  border-radius:var(--radius-m);
  overflow:hidden;
  background:var(--bg-soft);
  aspect-ratio:4/3;
  box-shadow:var(--shadow-1);
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .24s var(--ease);
}
.step-card:hover .card-media img{transform:scale(1.03);}

.card-media-tag{
  position:absolute;
  left:16px;
  top:16px;
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  background:rgba(247,245,241,.94);
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  line-height:1;
}

.card-body{padding-left:8px;}

.card-kicker{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-3);
  margin:0 0 12px;
}

.card-body h3{margin-bottom:12px;font-size:22px;}

.card-body .card-desc{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  margin-bottom:20px;
}

.point-list{margin:0 0 24px;}
.point-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  line-height:1.75;
  color:var(--text-2);
  margin-bottom:8px;
}
.point-list li:last-child{margin-bottom:0;}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.62em;
  width:6px;
  height:6px;
  border-radius:1px;
  background:var(--accent);
}

/* Foundation Accordion 改造 */
.accordion{
  margin:0;
  padding:0;
  background:transparent;
  border:0;
  list-style:none;
}

.accordion-item{
  border:0;
  border-top:1px solid var(--line);
  background:transparent;
}
.accordion-item:last-child{border-bottom:1px solid var(--line);}

.accordion-title{
  position:relative;
  display:block;
  padding:18px 44px 18px 0;
  border:0;
  background:transparent;
  color:var(--ink);
  font-size:16px;
  font-weight:700;
  line-height:1.5;
  min-height:44px;
  transition:color .16s var(--ease);
}
.accordion-title:hover,
.accordion-title:focus{color:var(--accent);background:transparent;}

.accordion-title::before{
  content:"";
  position:absolute;
  right:8px;
  top:50%;
  width:14px;
  height:1.5px;
  margin-top:-.75px;
  background:var(--ink);
  transition:background .16s var(--ease);
}
.accordion-title::after{
  content:"";
  position:absolute;
  right:14px;
  top:50%;
  width:1.5px;
  height:14px;
  margin-top:-7px;
  background:var(--ink);
  transition:transform .24s var(--ease),background .16s var(--ease);
}
.accordion-title:hover::before,
.accordion-title:hover::after,
.accordion-title:focus::before,
.accordion-title:focus::after{background:var(--accent);}

.accordion-item.is-active .accordion-title{color:var(--accent);}
.accordion-item.is-active .accordion-title::after{transform:rotate(90deg);background:var(--accent);}
.accordion-item.is-active .accordion-title::before{background:var(--accent);}

.accordion-content{
  display:none;
  padding:0 40px 20px 0;
  border:0;
  background:transparent;
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
}
.accordion-content p{font-size:15px;color:var(--text-2);}

/* ---------- 9. 保障条 ---------- */
.assure-bar{
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:32px 0;
}

.assure-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}

.assure-item{
  padding:0 24px;
  border-left:1px solid var(--line);
}
.assure-item:first-child{border-left:0;padding-left:0;}

.assure-num{
  display:block;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--accent);
  line-height:1.4;
  margin-bottom:6px;
}

.assure-title{
  display:block;
  font-size:14px;
  font-weight:700;
  color:var(--ink);
  line-height:1.5;
  margin-bottom:4px;
}

.assure-text{
  display:block;
  font-size:13px;
  color:var(--text-3);
  line-height:1.6;
}

/* ---------- 10. 清单 ---------- */
.checklist-head h2{margin-bottom:12px;}
.checklist-head p{font-size:15px;color:var(--text-2);max-width:340px;}

.checklist{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 40px;
  margin:0;
}

.checklist dt{
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  line-height:1.5;
  padding:16px 0 4px;
  border-top:1px solid var(--line);
  font-family:var(--font-sans);
}
.checklist dd{
  margin:0 0 16px;
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
}
.checklist .ck-num{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--accent);
  letter-spacing:.08em;
  margin-right:8px;
}

/* ---------- 11. CTA ---------- */
.cta-band{
  background:var(--ink);
  border-radius:var(--radius-l);
  padding:56px 48px;
  color:#F7F5F1;
}
.cta-band h2{color:#F7F5F1;margin-bottom:14px;}
.cta-band p{
  color:var(--dark-text-2);
  font-size:15px;
  line-height:1.8;
  max-width:520px;
  margin-bottom:0;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:flex-end;
}
.cta-actions .btn{flex:0 0 auto;}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#F7F5F1;
  padding:72px 0 0;
  margin-top:0;
}

.footer-brand{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  margin-bottom:16px;
  color:#F7F5F1;
}
.footer-brand:hover,
.footer-brand:focus{color:#F7F5F1;}

.footer-brand-mark{
  font-size:24px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
}

.footer-brand-sub{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--dark-text-2);
  line-height:1;
}

.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:var(--dark-text-2);
  max-width:320px;
  margin-bottom:20px;
}

.footer-contact{
  font-family:var(--font-mono);
  font-size:13px;
  line-height:1.9;
  color:var(--dark-text-2);
}

.footer-col h4{
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:#F7F5F1;
  margin-bottom:18px;
}

.footer-col ul li{margin-bottom:10px;}

.footer-col a{
  font-size:14px;
  line-height:1.6;
  color:var(--dark-text-2);
  transition:color .16s var(--ease);
}
.footer-col a:hover,
.footer-col a:focus{color:#F7F5F1;}

.footer-sub-note{
  font-size:13px;
  line-height:1.8;
  color:var(--dark-text-2);
  margin-bottom:16px;
}

.footer-form{
  display:flex;
  gap:8px;
  align-items:center;
  flex-wrap:wrap;
}
.footer-form input[type="email"]{
  flex:1 1 180px;
  min-width:0;
  height:48px;
  border:1px solid rgba(247,245,241,.22);
  border-radius:var(--radius-m);
  background:rgba(247,245,241,.06);
  color:#F7F5F1;
  line-height:46px;
}
.footer-form input[type="email"]::placeholder{color:#8A857C;}
.footer-form input[type="email"]:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(47,107,94,.28);
  background:rgba(247,245,241,.1);
}
.footer-form .btn{flex:0 0 auto;}

.footer-bottom{
  margin-top:56px;
  padding:24px 0 28px;
  border-top:1px solid var(--dark-line);
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  justify-content:space-between;
  align-items:center;
}
.footer-bottom p{
  font-size:13px;
  line-height:1.7;
  color:var(--dark-text-2);
  margin:0;
}
.footer-bottom .dot{
  display:inline-block;
  width:4px;
  height:4px;
  margin:0 8px;
  border-radius:50%;
  background:var(--dark-text-2);
  vertical-align:middle;
}

/* ---------- 13. 动效 ---------- */
.reveal-up{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .48s var(--ease),transform .48s var(--ease);
  will-change:opacity,transform;
}
.reveal-up.is-visible{
  opacity:1;
  transform:none;
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal-up{opacity:1;transform:none;}
}

/* ---------- 14. 响应式 ---------- */
@media screen and (max-width:1024px){
  :root{--section-py:72px;}

  .grid-container{padding-left:24px;padding-right:24px;}

  .main-nav{gap:20px;}
  .nav-link{font-size:14px;}

  .flow-steps{grid-template-columns:1fr 1fr;}
  .flow-step{border-bottom:1px solid var(--line);padding:28px 20px;}
  .flow-step:nth-child(2n){border-right:0;}
  .flow-step:nth-last-child(-n+2){border-bottom:0;}

  .assure-grid{grid-template-columns:1fr 1fr;gap:24px 0;}
  .assure-item:nth-child(odd){border-left:0;padding-left:0;}

  .cta-band{padding:44px 32px;}
  .cta-actions{justify-content:flex-start;margin-top:24px;}

  .card-body{padding-left:0;margin-top:24px;}
}

@media screen and (max-width:767px){
  :root{--section-py:56px;}

  .grid-container{padding-left:20px;padding-right:20px;}

  .header-inner{min-height:60px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-cta{display:none;}

  body{font-size:15px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}

  .page-head{padding-top:24px;padding-bottom:48px;}
  .page-lead{font-size:16px;margin-bottom:24px;}
  .head-figure{margin-top:28px;}

  .stat-row{gap:0;flex-wrap:wrap;}
  .stat{padding:0 18px;}
  .stat-num{font-size:18px;}

  .flow-steps{grid-template-columns:1fr;}
  .flow-step{border-right:0;border-bottom:1px solid var(--line);padding:24px 0;}
  .flow-step:last-child{border-bottom:0;}
  .flow-step::before{left:0;}

  .step-card{padding:40px 0;}
  .card-body h3{font-size:19px;}

  .assure-bar{padding:24px 0;}
  .assure-grid{grid-template-columns:1fr 1fr;gap:20px 16px;}
  .assure-item{padding:0;border-left:0;}

  .checklist{grid-template-columns:1fr;gap:0;}

  .cta-band{padding:36px 24px;}
  .cta-actions .btn{width:100%;}

  .site-footer{padding-top:56px;}
  .footer-col{margin-top:32px;}
  .footer-bottom{margin-top:40px;flex-direction:column;align-items:flex-start;}

  .section-head{margin-bottom:32px;}
}

@media screen and (max-width:479px){
  .brand-mark{font-size:21px;}
  .brand-sub{font-size:11px;}
  .btn{padding:0 20px;font-size:14px;}
  .stat{padding:0 14px;}
  .stat-label{font-size:12px;}
}

/* roulang page: category3 */
/* ==========================================================================
   site.css — aoa线上平台 全站样式（功能能力页）
   1. 设计变量  2. 基础重置  3. 容器  4. 头部导航  5. 面包屑
   6. 页头  7. 页内索引  8. 错位卡片  9. 引言块  10. 能力列表
   11. 数据条  12. 按钮  13. CTA  14. 页脚  15. 抽屉  16. 动效  17. 响应式
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink:#1C1B18;
  --accent:#2F6B5E;
  --accent-dark:#245347;
  --accent-tint:#DCE6E1;
  --bg:#F7F5F1;
  --bg-soft:#EDE9E1;
  --card:#FFFFFF;
  --text:#1C1B18;
  --text-2:#5A5750;
  --text-3:#8A857C;
  --line:#DCD6CB;
  --sand:#C8B79B;
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(28,27,24,.05);
  --sh-2:0 12px 32px -12px rgba(28,27,24,.18);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sect-y:96px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- 2. 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--accent);text-decoration:none;background-color:transparent;transition:color 160ms var(--ease);}
a:hover,a:focus{color:var(--accent-dark);}
h1,h2,h3,h4,h5,h6{
  margin:0 0 .6em;
  font-weight:700;
  line-height:1.24;
  letter-spacing:-.02em;
  color:var(--text);
}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
::selection{background:var(--accent-tint);color:var(--ink);}
.mono{font-family:var(--font-mono);}
.show-for-sr{
  position:absolute!important;width:1px;height:1px;padding:0;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ---------- 3. 容器 ---------- */
.grid-container{
  max-width:1240px!important;
  padding-left:32px;
  padding-right:32px;
  margin-left:auto;
  margin-right:auto;
}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}

/* ---------- 4. 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,241,.95);
  -webkit-backdrop-filter:saturate(140%) blur(8px);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(28,27,24,.02);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  color:var(--ink);
  min-height:44px;
  padding:4px 0;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  font-size:26px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--text-2);
  line-height:1;
  padding-bottom:2px;
}
.main-nav{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:6px 0;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:4px;
  height:2px;
  background:var(--accent);
  transition:left 160ms var(--ease),right 160ms var(--ease);
}
.nav-link:hover,.nav-link.is-active{color:var(--accent);}
.nav-link:hover::after,.nav-link.is-active::after{left:0;right:0;}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:transparent;
  color:var(--ink);
  padding:0;
}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent);}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- 5. 面包屑 ---------- */
.breadcrumb{padding:24px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb [aria-current="page"]{color:var(--text);}

/* ---------- 6. 页头（编辑式） ---------- */
.page-head{
  padding:56px 0 64px;
  border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:12px;
  margin:0 0 22px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-3);
}
.eyebrow-dash{
  display:inline-block;
  width:32px;
  height:4px;
  background:var(--accent);
  border-radius:2px;
}
.page-head h1{
  font-size:clamp(32px,4.6vw,56px);
  line-height:1.16;
  letter-spacing:-.02em;
  margin:0 0 24px;
  max-width:14em;
}
.page-lead{
  max-width:700px;
  font-size:18px;
  line-height:1.85;
  color:var(--text-2);
  margin:0;
}
.vertical-note{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.18em;
  color:var(--text-3);
  margin:0 0 0 auto;
  height:190px;
  border-left:1px solid var(--line);
  padding-left:14px;
}
.head-side{display:flex;justify-content:flex-end;align-items:flex-end;}

/* ---------- 7. 主体 & 页内索引 ---------- */
.cap-body{padding:var(--sect-y) 0;}
.anchor-index{position:sticky;top:96px;}
.anchor-index .index-title{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-3);
  margin:0 0 18px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.anchor-index ul{display:block;}
.anchor-index li{margin:0;}
.anchor-index a{
  position:relative;
  display:block;
  padding:9px 0 9px 16px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
  transition:color 160ms var(--ease),border-color 160ms var(--ease),padding-left 160ms var(--ease);
}
.anchor-index a:hover,.anchor-index a.is-current{
  color:var(--accent);
  border-left-color:var(--accent);
  padding-left:20px;
}
.anchor-index .index-meta{
  margin-top:22px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.9;
  color:var(--text-3);
}

/* ---------- 8. 错位卡片网格 ---------- */
.cap-grid{margin-bottom:24px;}
.cap-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.cap-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:#CFC8BB;
}
.card-cover{overflow:hidden;background:var(--bg-soft);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease);}
.cap-card:hover .card-cover img{transform:scale(1.03);}
.cover-16x10{aspect-ratio:16/10;}
.cover-3x2{aspect-ratio:3/2;}
.card-body{padding:26px 26px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  margin-bottom:16px;
  border-radius:var(--r-pill);
  background:var(--accent-tint);
  border:1px solid rgba(47,107,94,.4);
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  white-space:nowrap;
}
.badge-sand{background:transparent;border-color:rgba(200,183,155,.85);color:#8B7A5C;}
.card-title{font-size:22px;line-height:1.35;margin:0 0 12px;}
.card-title-sm{font-size:18px;line-height:1.4;margin:0 0 10px;}
.card-text{font-size:15px;line-height:1.8;color:var(--text-2);margin:0 0 16px;}
.card-text-sm{font-size:14px;line-height:1.75;color:var(--text-2);margin:0 0 14px;}
.feature-list{margin:0 0 20px;}
.feature-list li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  margin-bottom:8px;
}
.feature-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:6px;
  background:var(--accent);
  border-radius:1px;
}
.card-foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.card-meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text-3);
}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--accent);
  min-height:44px;
}
.card-link .arrow{transition:transform 160ms var(--ease);display:inline-block;}
.card-link:hover .arrow{transform:translateX(4px);}
.cap-col-offset{margin-top:40px;}
.cap-col-sink{margin-bottom:40px;}

/* ---------- 9. 引言块 ---------- */
.pullquote{
  margin:72px 0 80px;
  padding:6px 0 6px 28px;
  border-left:4px solid var(--accent);
  font-size:clamp(21px,2.4vw,32px);
  line-height:1.5;
  letter-spacing:-.01em;
  font-weight:500;
  color:var(--ink);
}
.pullquote p{margin:0;}
.pullquote cite{
  display:block;
  margin-top:20px;
  font-family:var(--font-mono);
  font-style:normal;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--text-3);
}

/* ---------- 10. 能力列表 ---------- */
.section-head{margin-bottom:36px;}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.3;
  margin:0 0 12px;
}
.section-head p{
  max-width:640px;
  margin:0;
  font-size:15px;
  color:var(--text-2);
}
.cap-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 56px;
  border-top:1px solid var(--line);
}
.cap-item{
  display:flex;
  gap:18px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.cap-num{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--accent);
  padding-top:5px;
  min-width:30px;
}
.cap-item h3{font-size:17px;line-height:1.5;margin:0 0 6px;}
.cap-item p{font-size:14px;line-height:1.8;color:var(--text-2);margin:0;}

/* ---------- 11. 数据条 ---------- */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  margin-top:64px;
}
.stat-item{padding:26px 24px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{
  display:block;
  font-family:var(--font-mono);
  font-size:28px;
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--ink);
  margin-bottom:6px;
}
.stat-label{font-size:13px;line-height:1.6;color:var(--text-2);margin:0;}

/* ---------- 12. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  line-height:1;
  text-align:center;
  transition:background 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease),transform 160ms var(--ease);
}
.btn .arrow{display:inline-block;transition:transform 160ms var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--accent);color:#FFFFFF;}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-dark);color:#FFFFFF;}
.btn-ghost{background:transparent;border-color:rgba(247,245,241,.45);color:var(--bg);}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(247,245,241,.1);border-color:rgba(247,245,241,.9);color:var(--bg);}

/* ---------- 13. CTA 条 ---------- */
.cta-section{padding:0 0 var(--sect-y);}
.cta-band{
  background:var(--ink);
  color:var(--bg);
  border-radius:var(--r-lg);
  padding:64px 56px;
}
.cta-band h2{
  color:var(--bg);
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;
  margin:0 0 12px;
  max-width:16em;
}
.cta-band p{color:#B9B4AA;font-size:15px;line-height:1.8;margin:0;max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;align-items:center;}
.cta-note{
  margin-top:18px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:#8A857C;
}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--bg);
  padding:72px 0 0;
}
.site-footer h4{
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:#F7F5F1;
  margin:0 0 18px;
}
.footer-brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  color:var(--bg);
  margin-bottom:18px;
}
.footer-brand:hover{color:var(--bg);}
.footer-brand-mark{font-size:26px;font-weight:700;letter-spacing:-.02em;line-height:1;}
.footer-brand-sub{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:#B9B4AA;
  line-height:1;
  padding-bottom:2px;
}
.footer-desc{font-size:14px;line-height:1.8;color:#B9B4AA;margin:0 0 20px;max-width:26em;}
.footer-contact{
  font-family:var(--font-mono);
  font-size:13px;
  line-height:2;
  color:#8A857C;
  letter-spacing:.02em;
}
.footer-col ul{margin:0;}
.footer-col li{margin:0 0 4px;}
.footer-col a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:14px;
  color:#B9B4AA;
}
.footer-col a:hover{color:#F7F5F1;}
.footer-sub-note{font-size:14px;line-height:1.8;color:#B9B4AA;margin:0 0 18px;max-width:28em;}
.footer-form{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.footer-form input[type="email"]{
  flex:1 1 200px;
  min-width:0;
  height:48px;
  margin:0;
  padding:0 16px;
  background:transparent;
  border:1px solid rgba(247,245,241,.18);
  border-radius:var(--r-md);
  color:#F7F5F1;
  font-size:14px;
  box-shadow:none;
  transition:border-color 160ms var(--ease),box-shadow 160ms var(--ease);
}
.footer-form input[type="email"]::placeholder{color:#8A857C;}
.footer-form input[type="email"]:focus{
  outline:none;
  border-color:var(--accent-tint);
  box-shadow:0 0 0 2px rgba(220,230,225,.18);
}
.footer-form .btn{min-height:48px;padding:0 24px;}
.footer-bottom{
  margin-top:64px;
  padding:24px 0 32px;
  border-top:1px solid rgba(247,245,241,.14);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
}
.footer-bottom p{
  margin:0;
  font-size:13px;
  line-height:1.7;
  color:#B9B4AA;
}
.footer-bottom .dot{
  display:inline-block;
  width:4px;
  height:4px;
  margin:0 10px;
  border-radius:50%;
  background:#B9B4AA;
  vertical-align:middle;
}

/* ---------- 15. 移动抽屉 ---------- */
.drawer{
  width:100%;
  max-width:100%;
  height:100%;
  top:0;
  left:0;
  margin:0;
  padding:28px 24px 40px;
  border:0;
  border-radius:0;
  background:var(--bg);
  overflow-y:auto;
}
.drawer .close-button{
  color:var(--ink);
  top:20px;
  right:20px;
  font-size:28px;
  line-height:1;
}
.drawer-brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  color:var(--ink);
  margin-bottom:28px;
  min-height:44px;
}
.drawer-brand .mark{font-size:24px;font-weight:700;letter-spacing:-.02em;}
.drawer-brand .sub{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--text-2);
}
.drawer-nav{border-top:1px solid var(--line);margin-bottom:28px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 4px;
  border-bottom:1px solid var(--line);
  font-size:16px;
  color:var(--text);
}
.drawer-nav a.is-active{color:var(--accent);font-weight:600;}
.drawer-nav a:hover{color:var(--accent);}
.drawer-cta{width:100%;}

/* ---------- 16. 入场动效 ---------- */
.reveal-up{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 480ms var(--ease),transform 480ms var(--ease);
  will-change:opacity,transform;
}
.reveal-up.is-in{opacity:1;transform:translateY(0);}

/* ---------- 17. 响应式 ---------- */
@media screen and (max-width:1279px){
  :root{--sect-y:88px;}
  .cta-band{padding:56px 44px;}
}

@media screen and (max-width:1023px){
  :root{--sect-y:72px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .vertical-note{display:none;}
  .cap-body{padding:72px 0;}
  .anchor-index{
    position:static;
    top:auto;
    display:flex;
    align-items:center;
    gap:8px;
    overflow-x:auto;
    padding-bottom:14px;
    margin-bottom:32px;
    border-bottom:1px solid var(--line);
    -webkit-overflow-scrolling:touch;
  }
  .anchor-index .index-title{display:none;}
  .anchor-index ul{display:flex;gap:8px;}
  .anchor-index a{
    white-space:nowrap;
    border:1px solid var(--line);
    border-left:1px solid var(--line);
    border-radius:var(--r-pill);
    padding:10px 16px;
    min-height:44px;
    display:inline-flex;
    align-items:center;
    font-size:13px;
  }
  .anchor-index a:hover,.anchor-index a.is-current{
    padding-left:16px;
    border-color:var(--accent);
    background:var(--accent-tint);
    color:var(--accent-dark);
  }
  .anchor-index .index-meta{display:none;}
  .cap-col-offset{margin-top:24px;}
  .cap-col-sink{margin-bottom:24px;}
  .cta-band{padding:48px 36px;}
  .cta-actions{justify-content:flex-start;margin-top:28px;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
}

@media screen and (max-width:767px){
  :root{--sect-y:56px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{min-height:60px;gap:12px;}
  .brand-mark{font-size:22px;}
  .brand-sub{font-size:10px;letter-spacing:.14em;}
  .page-head{padding:32px 0 44px;}
  .page-head h1{font-size:clamp(28px,7.4vw,34px);margin-bottom:18px;}
  .page-lead{font-size:16px;line-height:1.8;}
  .eyebrow{font-size:11px;letter-spacing:.12em;margin-bottom:16px;}
  .breadcrumb{padding-top:18px;}
  .cap-list{grid-template-columns:minmax(0,1fr);gap:0;}
  .pullquote{margin:48px 0 56px;padding-left:20px;}
  .card-body{padding:22px 20px 20px;}
  .card-title{font-size:20px;}
  .card-title-sm{font-size:17px;}
  .cta-band{padding:36px 24px;border-radius:var(--r-md);}
  .cta-actions{gap:10px;}
  .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .site-footer{padding-top:56px;}
  .footer-bottom{margin-top:44px;flex-direction:column;}
  .stat-item{padding:22px 18px;}
  .stat-num{font-size:24px;}
}

@media screen and (max-width:519px){
  .stat-strip{grid-template-columns:minmax(0,1fr);}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
  .card-foot{flex-direction:column;align-items:flex-start;gap:4px;}
  .card-link{min-height:44px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .reveal-up{opacity:1!important;transform:none!important;}
}

/* roulang page: category4 */
/* ==========================================================
   site.css —— aoa线上平台 站点样式
   1. 设计变量  2. 基础重置  3. 容器与板块  4. 导航
   5. 按钮与标签  6. 页头与 Hero  7. 对比矩阵  8. 选型提示
   9. 场景卡  10. 流程条  11. FAQ  12. CTA  13. 页脚
   14. 动效  15. 响应式
   ========================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink:#1C1B18;
  --accent:#2F6B5E;
  --accent-dark:#245347;
  --accent-soft:#DCE6E1;
  --bg:#F7F5F1;
  --bg-soft:#EDE9E1;
  --card:#FFFFFF;
  --text:#1C1B18;
  --text-2:#5A5750;
  --text-3:#8A857C;
  --line:#DCD6CB;
  --sand:#C8B79B;
  --dark:#1C1B18;
  --dark-text:#F7F5F1;
  --dark-sub:#B9B4AA;
  --dark-line:rgba(247,245,241,.14);
  --r4:4px;
  --r8:8px;
  --r14:14px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(28,27,24,.05);
  --sh2:0 12px 32px -12px rgba(28,27,24,.18);
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sp-section:96px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- 2. 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font);
  color:var(--text);
  font-weight:700;
  line-height:1.24;
  letter-spacing:-.02em;
  margin:0 0 .6em;
}
h1{font-size:clamp(30px,4vw,52px);}
h2{font-size:clamp(24px,2.6vw,32px);}
h3{font-size:clamp(18px,1.6vw,21px);line-height:1.35;}
h4{font-size:17px;line-height:1.4;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 1em;padding-left:1.15em;line-height:1.75;}
li{margin-bottom:.35em;}
a{color:var(--accent);text-decoration:none;transition:color 160ms var(--ease);}
a:hover,a:focus{color:var(--accent-dark);}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
strong{font-weight:700;color:var(--text);}
::selection{background:var(--accent-soft);color:var(--accent-dark);}

/* Foundation 默认视觉覆盖 */
body,button,input,select,textarea{font-family:var(--font);}
a.button,.button{
  background:var(--accent);
  color:#fff;
  border-radius:var(--r8);
  font-family:var(--font);
  font-weight:600;
  transition:background 160ms var(--ease);
}
a.button:hover,.button:hover{background:var(--accent-dark);color:#fff;}
.accordion{border:none;background:transparent;}
.accordion-title{
  background:transparent;
  border:none;
  color:var(--text);
  font-family:var(--font);
}
.accordion-content{background:transparent;border:none;padding:0;color:var(--text-2);}
input[type="text"],input[type="email"],input[type="search"]{
  border:1px solid var(--line);
  border-radius:var(--r8);
  box-shadow:none;
  background:#fff;
  color:var(--text);
  font-family:var(--font);
}
input[type="text"]:focus,input[type="email"]:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(47,107,94,.18);
  outline:none;
}

/* ---------- 3. 容器与板块 ---------- */
.grid-container{
  max-width:1240px;
  padding-left:32px;
  padding-right:32px;
  margin-left:auto;
  margin-right:auto;
}
.grid-container.full{max-width:100%;}
.section{
  padding-top:var(--sp-section);
  padding-bottom:var(--sp-section);
  position:relative;
}
.section--tight{padding-top:64px;padding-bottom:64px;}
.section--soft{background:var(--bg-soft);}
.section--line{border-top:1px solid var(--line);}
.section-head{
  max-width:760px;
  margin-bottom:44px;
}
.section-head--wide{max-width:none;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:28px;
  height:4px;
  background:var(--accent);
  border-radius:2px;
  display:inline-block;
}
.section-title{margin-bottom:14px;}
.section-sub{
  color:var(--text-2);
  font-size:16px;
  max-width:760px;
  line-height:1.8;
}
.reading{max-width:760px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.text-2{color:var(--text-2);}
.text-3{color:var(--text-3);}

/* ---------- 4. 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.95);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(28,27,24,.05);
}
.nav-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  color:var(--text);
  min-height:44px;
  align-items:center;
}
.brand:hover{color:var(--text);}
.brand-mark{
  font-family:var(--font);
  font-size:23px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
  color:var(--ink);
}
.brand-sub{
  font-size:13px;
  color:var(--text-2);
  letter-spacing:.02em;
  line-height:1;
  padding-bottom:2px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:15px;
  color:var(--text-2);
  transition:color 160ms var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:16px;
  width:0;
  height:2px;
  background:var(--accent);
  transform:translateX(-50%);
  transition:width 160ms var(--ease);
  border-radius:2px;
}
.nav-link:hover{color:var(--accent);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--accent);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r8);
  background:#fff;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  padding:0;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:1.5px;
  background:var(--ink);
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:1.5px;
  background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg);
  padding:8px 20px 24px;
}
.nav-drawer.is-open{display:block;}
.nav-drawer a{
  display:flex;
  align-items:center;
  min-height:48px;
  border-bottom:1px solid var(--line);
  color:var(--text);
  font-size:16px;
}
.nav-drawer a.is-active{color:var(--accent);font-weight:600;}
.nav-drawer .drawer-cta{margin-top:20px;}

/* ---------- 5. 按钮与标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background 160ms var(--ease),color 160ms var(--ease),
             border-color 160ms var(--ease),transform 160ms var(--ease);
  white-space:nowrap;
}
.btn .arrow{
  display:inline-block;
  transition:transform 160ms var(--ease);
  font-family:var(--font-mono);
}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line);}
.btn-ghost:hover,.btn-ghost:focus{border-color:var(--accent);color:var(--accent);}
.btn-onink{background:var(--accent);color:#0f1512;border-color:var(--accent);}
.btn-onink:hover{background:#3c8574;color:#0f1512;border-color:#3c8574;}
.btn-outline-light{background:transparent;color:var(--dark-text);border-color:rgba(247,245,241,.45);}
.btn-outline-light:hover{background:rgba(247,245,241,.1);color:var(--dark-text);border-color:var(--dark-text);}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  font-size:15px;
  font-weight:600;
  color:var(--accent);
}
.btn-link .arrow{transition:transform 160ms var(--ease);font-family:var(--font-mono);}
.btn-link:hover .arrow{transform:translateX(4px);}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-size:13px;
  font-weight:600;
  border:1px solid rgba(47,107,94,.4);
  letter-spacing:.02em;
}
.badge--sand{border-color:rgba(200,183,155,.7);background:#F3EEE5;color:#7a6a4e;}
.tagline{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--text-3);
}

/* ---------- 6. 面包屑与页头 ---------- */
.breadcrumb{
  padding-top:24px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.6;
}
.breadcrumb ol{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
}
.breadcrumb li{margin:0;display:inline-flex;align-items:center;gap:6px;}
.breadcrumb li+li::before{content:"/";color:var(--line);margin-right:2px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .is-current{color:var(--text);font-weight:500;}

.page-hero{
  padding-top:48px;
  padding-bottom:64px;
  border-bottom:1px solid var(--line);
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,54px);
  margin-bottom:22px;
  letter-spacing:-.02em;
}
.page-hero .lead{
  font-size:18px;
  line-height:1.8;
  color:var(--text-2);
  max-width:640px;
  margin-bottom:32px;
}
.hero-figure{
  position:relative;
  border-radius:var(--r8);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:5/4;
  background:var(--bg-soft);
}
.hero-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.hero-figure .figure-anchor{
  position:absolute;
  right:0;
  bottom:0;
  width:44px;
  height:44px;
  background:var(--accent);
}
.stat-row{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:8px;
  border-top:1px solid var(--line);
  padding-top:24px;
}
.stat{
  padding-right:32px;
  margin-right:32px;
  border-right:1px solid var(--line);
  min-width:110px;
}
.stat:last-child{border-right:none;margin-right:0;padding-right:0;}
.stat b{
  display:block;
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:600;
  letter-spacing:-.01em;
  line-height:1.2;
  color:var(--ink);
}
.stat span{
  display:block;
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.06em;
  margin-top:4px;
}

/* ---------- 7. 对比矩阵 ---------- */
.compare-wrap{
  border:1px solid var(--line);
  border-radius:var(--r14);
  background:var(--card);
  overflow:hidden;
  box-shadow:var(--sh1);
}
.compare-scroll{
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.compare-table{
  width:100%;
  min-width:840px;
  border-collapse:collapse;
  margin:0;
  background:var(--card);
  font-size:15px;
}
.compare-table caption{
  caption-side:top;
  text-align:left;
  padding:18px 22px;
  font-size:13px;
  color:var(--text-3);
  border-bottom:1px solid var(--line);
}
.compare-table thead th{
  background:var(--dark);
  color:var(--dark-text);
  font-weight:600;
  font-size:15px;
  letter-spacing:.02em;
  padding:18px 20px;
  text-align:left;
  border-bottom:1px solid var(--dark);
  white-space:nowrap;
}
.compare-table thead th:first-child{
  color:var(--dark-sub);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  font-weight:500;
}
.compare-table thead th.is-featured{
  background:#26332E;
  color:#fff;
}
.compare-table tbody th{
  text-align:left;
  font-weight:600;
  font-size:15px;
  color:var(--text);
  background:#fff;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.compare-table tbody td{
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  border-left:1px solid var(--line);
  color:var(--text-2);
  font-size:15px;
  line-height:1.6;
  vertical-align:middle;
}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody tr:hover th{background:#FBF9F5;}
.compare-table tbody tr:hover td{background:#FBF9F5;}
.compare-table th:first-child,
.compare-table td:first-child{
  position:sticky;
  left:0;
  z-index:2;
  border-left:none;
}
.dot-on{
  display:inline-block;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--accent);
  vertical-align:middle;
  margin-right:8px;
  position:relative;
  top:-1px;
}
.dot-off{
  color:var(--text-3);
  font-family:var(--font-mono);
}
.cell-note{
  display:block;
  font-size:12px;
  color:var(--text-3);
  margin-top:2px;
}
.compare-legend{
  display:flex;
  flex-wrap:wrap;
  gap:24px;
  margin-top:20px;
  font-size:13px;
  color:var(--text-3);
}
.compare-legend span{display:inline-flex;align-items:center;gap:8px;}

/* ---------- 8. 选型提示 ---------- */
.pick-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.pick-item{
  padding:36px 32px 40px;
  border-right:1px solid var(--line);
  background:transparent;
  transition:background 240ms var(--ease);
}
.pick-item:last-child{border-right:none;}
.pick-item:hover{background:rgba(255,255,255,.6);}
.pick-num{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.14em;
  color:var(--accent);
  display:block;
  margin-bottom:18px;
}
.pick-item h3{
  font-size:20px;
  margin-bottom:12px;
}
.pick-item p{
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
  margin-bottom:16px;
}
.pick-item .mini-list{
  list-style:none;
  padding:0;
  margin:0;
  font-size:14px;
  color:var(--text-2);
}
.pick-item .mini-list li{
  position:relative;
  padding-left:16px;
  margin-bottom:8px;
  line-height:1.7;
}
.pick-item .mini-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:5px;
  height:5px;
  background:var(--accent);
  border-radius:1px;
}

/* ---------- 9. 场景卡 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.scene-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r14);
  overflow:hidden;
  box-shadow:var(--sh1);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.scene-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh2);
}
.scene-cover{
  aspect-ratio:3/2;
  overflow:hidden;
  background:var(--bg-soft);
}
.scene-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 240ms var(--ease);
}
.scene-card:hover .scene-cover img{transform:scale(1.03);}
.scene-body{
  padding:26px 28px 28px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.scene-body .badge{align-self:flex-start;margin-bottom:14px;}
.scene-body h3{font-size:20px;margin-bottom:10px;}
.scene-body p{
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
  margin-bottom:18px;
}
.scene-foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.scene-foot .mono{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--text-3);
  text-transform:uppercase;
}
.scene-foot a{
  font-size:14px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:44px;
}
.scene-foot a .arrow{transition:transform 160ms var(--ease);font-family:var(--font-mono);}
.scene-foot a:hover .arrow{transform:translateX(4px);}

/* ---------- 10. 流程条 ---------- */
.flow-list{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--line);
  list-style:none;
  padding:0;
  margin:0;
}
.flow-item{
  position:relative;
  padding:32px 24px 8px 0;
  border-right:1px solid var(--line);
  margin:0;
}
.flow-item:last-child{border-right:none;padding-right:0;}
.flow-item .flow-num{
  display:block;
  font-family:var(--font-mono);
  font-size:34px;
  font-weight:500;
  line-height:1;
  color:var(--accent);
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.flow-item h3{font-size:17px;margin-bottom:8px;}
.flow-item p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0;}

/* ---------- 11. FAQ ---------- */
.faq-wrap{max-width:880px;}
.faq-accordion{
  list-style:none;
  margin:0;
  padding:0;
  border-top:1px solid var(--line);
}
.faq-accordion .accordion-item{
  list-style:none;
  margin:0;
  border-bottom:1px solid var(--line);
  background:transparent;
}
.faq-accordion .accordion-title{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 44px 22px 0;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
  line-height:1.55;
  border:none;
  background:transparent;
  transition:color 160ms var(--ease);
  min-height:44px;
}
.faq-accordion .accordion-title:hover{color:var(--accent);background:transparent;}
.faq-accordion .accordion-title::before{
  content:"+";
  position:absolute;
  right:0;
  top:50%;
  transform:translateY(-50%);
  float:none;
  width:20px;
  height:20px;
  line-height:19px;
  text-align:center;
  font-family:var(--font-mono);
  font-size:18px;
  font-weight:400;
  color:var(--accent);
  background:transparent;
  border:none;
  margin:0;
  transition:transform 240ms var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  transform:translateY(-50%) rotate(45deg);
}
.faq-accordion .accordion-item.is-active .accordion-title{color:var(--accent);}
.faq-accordion .accordion-content{
  padding:0 44px 26px 0;
  border:none;
  background:transparent;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.faq-accordion .accordion-content p{margin-bottom:.8em;}
.faq-accordion .accordion-content p:last-child{margin-bottom:0;}

/* ---------- 12. CTA 条 ---------- */
.cta-band{
  background:var(--dark);
  border-radius:var(--r14);
  padding:56px 56px;
  color:var(--dark-text);
  overflow:hidden;
}
.cta-band h2{
  color:var(--dark-text);
  font-size:clamp(22px,2.4vw,30px);
  margin-bottom:14px;
  max-width:16em;
}
.cta-band p{
  color:var(--dark-sub);
  font-size:15px;
  line-height:1.8;
  margin-bottom:0;
  max-width:34em;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:flex-end;
  align-items:center;
}
.cta-note{
  margin-top:18px;
  font-size:13px;
  color:var(--dark-sub);
  font-family:var(--font-mono);
  letter-spacing:.06em;
}

/* ---------- 13. 页脚 ---------- */
.site-footer{
  background:var(--dark);
  color:var(--dark-text);
  padding-top:72px;
  margin-top:0;
}
.site-footer h4{
  font-size:13px;
  color:var(--dark-text);
  letter-spacing:.14em;
  font-family:var(--font-mono);
  text-transform:uppercase;
  margin-bottom:18px;
  font-weight:500;
}
.footer-brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  margin-bottom:16px;
  color:var(--dark-text);
}
.footer-brand:hover{color:var(--dark-text);}
.footer-brand-mark{
  font-size:23px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
  color:var(--dark-text);
}
.footer-brand-sub{
  font-size:13px;
  color:var(--dark-sub);
  line-height:1;
}
.footer-desc{
  color:var(--dark-sub);
  font-size:14px;
  line-height:1.8;
  max-width:320px;
  margin-bottom:20px;
}
.footer-contact{
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:2;
  color:var(--dark-sub);
  letter-spacing:.02em;
}
.footer-col ul{
  list-style:none;
  margin:0;
  padding:0;
}
.footer-col li{margin-bottom:6px;}
.footer-col a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  color:var(--dark-sub);
  font-size:14.5px;
  transition:color 160ms var(--ease);
}
.footer-col a:hover{color:var(--dark-text);}
.footer-sub-note{
  font-size:13.5px;
  color:var(--dark-sub);
  line-height:1.8;
  margin-bottom:16px;
  max-width:320px;
}
.footer-form{
  display:flex;
  gap:10px;
  align-items:center;
  max-width:360px;
}
.footer-form input{
  flex:1;
  min-width:0;
  height:46px;
  background:rgba(247,245,241,.07);
  border:1px solid rgba(247,245,241,.22);
  color:var(--dark-text);
  border-radius:var(--r8);
  padding:0 14px;
  font-size:14px;
  margin:0;
}
.footer-form input::placeholder{color:#8d887e;}
.footer-form input:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(47,107,94,.3);
  background:rgba(247,245,241,.1);
}
.footer-form .btn{height:46px;min-height:46px;padding:0 20px;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid var(--dark-line);
  padding:24px 0 32px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 32px;
  justify-content:space-between;
  align-items:center;
}
.footer-bottom p{
  margin:0;
  font-size:13px;
  color:var(--dark-sub);
  line-height:1.7;
}
.footer-bottom .dot{
  display:inline-block;
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--dark-sub);
  margin:0 10px;
  vertical-align:middle;
}

/* ---------- 14. 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 480ms var(--ease),transform 480ms var(--ease);
  will-change:opacity,transform;
}
.reveal.is-in{
  opacity:1;
  transform:none;
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
}

/* ---------- 15. 响应式 ---------- */
@media screen and (max-width:1023px){
  :root{--sp-section:72px;}
  .main-nav{gap:22px;}
  .nav-link{font-size:14px;}
  .pick-grid{grid-template-columns:1fr;}
  .pick-item{
    border-right:none;
    border-bottom:1px solid var(--line);
    padding:30px 0 32px;
  }
  .pick-item:last-child{border-bottom:none;}
  .flow-list{grid-template-columns:repeat(2,1fr);}
  .flow-item{
    padding:28px 24px 24px 0;
    border-bottom:1px solid var(--line);
  }
  .flow-item:nth-child(2n){border-right:none;padding-right:0;}
  .cta-band{padding:44px 36px;}
  .cta-actions{justify-content:flex-start;margin-top:26px;}
}

@media screen and (max-width:899px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .nav-bar{height:60px;}
  .page-hero{padding-top:32px;padding-bottom:48px;}
  .hero-figure{aspect-ratio:16/10;margin-top:32px;}
}

@media screen and (max-width:767px){
  :root{--sp-section:56px;}
  body{font-size:15.5px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .page-hero h1{font-size:32px;}
  .page-hero .lead{font-size:16px;}
  .section-head{margin-bottom:32px;}
  .stat{padding-right:20px;margin-right:20px;min-width:0;flex:1 1 40%;}
  .stat b{font-size:22px;}
  .stat:nth-child(2n){border-right:none;}
  .stat:nth-child(n+3){margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
  .scene-grid{grid-template-columns:1fr;}
  .flow-list{grid-template-columns:1fr;}
  .flow-item{
    border-right:none;
    border-bottom:1px solid var(--line);
    padding:24px 0;
    padding-left:24px;
    position:relative;
  }
  .flow-item::before{
    content:"";
    position:absolute;
    left:0;
    top:32px;
    bottom:0;
    width:1px;
    background:var(--line);
  }
  .flow-item:last-child{border-bottom:none;}
  .compare-table{font-size:14px;min-width:720px;}
  .compare-table thead th{padding:14px 16px;font-size:14px;}
  .compare-table tbody th,
  .compare-table tbody td{padding:14px 16px;font-size:14px;}
  .cta-band{padding:36px 24px;border-radius:var(--r8);}
  .cta-actions .btn{width:100%;}
  .footer-form{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .site-footer{padding-top:52px;}
  .faq-accordion .accordion-title{font-size:16px;padding-right:40px;}
  .faq-accordion .accordion-content{padding-right:16px;}
}

@media screen and (max-width:479px){
  .brand-sub{display:none;}
  .stat{flex:1 1 100%;border-right:none;margin-right:0;padding-right:0;}
  .stat+.stat{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);}
  .btn{padding:0 20px;font-size:14.5px;}
  .compare-legend{flex-direction:column;gap:10px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .footer-form{flex-direction:column;align-items:stretch;}
  .footer-form .btn{width:100%;}
}

/* roulang page: category5 */
/* ============================================================
   aoa线上平台 · 案例场景频道
   01 设计变量
   02 基础重置
   03 排版系统
   04 容器与栅格
   05 按钮 / 徽章 / 标签
   06 顶部导航
   07 移动抽屉
   08 面包屑
   09 页头与筛选条
   10 画廊网格
   11 数据横条
   12 深色 CTA
   13 页脚
   14 动效与可访问性
   15 响应式断点
   ============================================================ */

/* ---------- 01 设计变量 ---------- */
:root{
  --ink:#1C1B18;
  --accent:#2F6B5E;
  --accent-dark:#245347;
  --accent-tint:#DCE6E1;
  --sand:#C8B79B;
  --bg:#F7F5F1;
  --bg-soft:#EDE9E1;
  --card:#FFFFFF;
  --text:#1C1B18;
  --text-2:#5A5750;
  --text-3:#8A857C;
  --line:#DCD6CB;
  --footer-text:#F7F5F1;
  --footer-text-2:#B9B4AA;
  --footer-line:rgba(247,245,241,.14);

  --radius-xs:4px;
  --radius-s:8px;
  --radius-m:14px;
  --radius-pill:999px;

  --shadow-1:0 1px 2px rgba(28,27,24,.05);
  --shadow-2:0 12px 32px -12px rgba(28,27,24,.18);

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --ease:cubic-bezier(.2,.7,.2,1);
  --dur-1:160ms;
  --dur-2:240ms;
  --dur-3:480ms;

  --max:1240px;
  --pad-x:32px;
  --sec-y:96px;
  --header-h:72px;
}

/* ---------- 02 基础重置 ---------- */
*,
*::before,
*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  padding:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

img,
svg,
video{
  display:block;
  max-width:100%;
  height:auto;
}

a{
  color:var(--accent);
  text-decoration:none;
  transition:color var(--dur-1) var(--ease);
}

a:hover,
a:focus{color:var(--accent-dark);}

p{margin:0 0 1em;}

ul,
ol{margin:0 0 1em;padding-left:1.2em;line-height:1.75;}

button{
  font-family:inherit;
  font-size:inherit;
  cursor:pointer;
  border-radius:0;
  background:none;
  color:inherit;
}

input,
textarea,
select{
  font-family:inherit;
  font-size:15px;
}

hr{
  border:0;
  border-top:1px solid var(--line);
  margin:32px 0;
}

::selection{
  background:var(--accent-tint);
  color:var(--ink);
}

/* ---------- 03 排版系统 ---------- */
h1,h2,h3,h4{
  margin:0 0 .6em;
  color:var(--ink);
  font-weight:700;
  line-height:1.22;
  letter-spacing:-.02em;
}

h1{
  font-size:clamp(30px,4.4vw,52px);
  letter-spacing:-.02em;
}

h2{
  font-size:clamp(24px,2.6vw,32px);
}

h3{
  font-size:clamp(18px,1.8vw,22px);
}

h4{
  font-size:16px;
  letter-spacing:0;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-3);
  margin:0 0 18px;
}

.eyebrow::before{
  content:"";
  display:block;
  width:28px;
  height:4px;
  background:var(--accent);
  border-radius:2px;
}

.lead{
  font-size:clamp(16px,1.6vw,18px);
  line-height:1.8;
  color:var(--text-2);
  max-width:760px;
}

.mono{
  font-family:var(--font-mono);
  letter-spacing:.04em;
}

.text-soft{color:var(--text-2);}
.text-weak{color:var(--text-3);}

/* ---------- 04 容器与栅格 ---------- */
.grid-container{
  max-width:var(--max);
  padding-left:var(--pad-x);
  padding-right:var(--pad-x);
  margin-left:auto;
  margin-right:auto;
}

.grid-container.full{
  max-width:none;
}

.grid-x > .cell{
  min-width:0;
}

.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}

.section{
  padding-top:var(--sec-y);
  padding-bottom:var(--sec-y);
}

.section--tight{
  padding-top:64px;
  padding-bottom:64px;
}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}

.section-head h2{margin-bottom:0;}

.rule{
  height:1px;
  background:var(--line);
  border:0;
  margin:0;
}

/* ---------- 05 按钮 / 徽章 / 标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  letter-spacing:.01em;
  text-align:center;
  transition:background-color var(--dur-1) var(--ease),
             border-color var(--dur-1) var(--ease),
             color var(--dur-1) var(--ease),
             transform var(--dur-1) var(--ease);
}

.btn svg{flex:0 0 auto;transition:transform var(--dur-1) var(--ease);}

.btn:hover svg{transform:translateX(4px);}

.btn-primary{
  background:var(--accent);
  border-color:var(--accent);
  color:#FFFFFF;
}

.btn-primary:hover,
.btn-primary:focus{
  background:var(--accent-dark);
  border-color:var(--accent-dark);
  color:#FFFFFF;
}

.btn-ghost{
  background:transparent;
  border-color:var(--line);
  color:var(--ink);
}

.btn-ghost:hover,
.btn-ghost:focus{
  border-color:var(--accent);
  color:var(--accent);
}

.btn-outline-light{
  background:transparent;
  border-color:rgba(247,245,241,.42);
  color:var(--footer-text);
}

.btn-outline-light:hover,
.btn-outline-light:focus{
  border-color:var(--footer-text);
  color:#FFFFFF;
  background:rgba(247,245,241,.06);
}

.btn-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  color:var(--accent);
  font-size:15px;
  font-weight:600;
  border:0;
  background:none;
  padding:0;
}

.btn-link svg{transition:transform var(--dur-1) var(--ease);}
.btn-link:hover svg{transform:translateX(4px);}

.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  background:var(--accent-tint);
  border:1px solid rgba(47,107,94,.4);
  color:var(--accent);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
}

.badge--sand{
  background:transparent;
  border-color:rgba(200,183,155,.7);
  color:var(--text-2);
}

.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(247,245,241,.28);
  color:rgba(247,245,241,.9);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
}

/* ---------- 06 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.95);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur-2) var(--ease),
             box-shadow var(--dur-2) var(--ease);
}

.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:var(--header-h);
}

.brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  min-height:44px;
  color:var(--ink);
}

.brand:hover{color:var(--ink);}

.brand-mark{
  font-size:23px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
}

.brand-sub{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-2);
  line-height:1;
}

.main-nav{
  display:flex;
  align-items:center;
  gap:32px;
}

.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:15px;
  color:var(--text-2);
  padding:0;
  transition:color var(--dur-1) var(--ease);
}

.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:10px;
  height:2px;
  background:var(--accent);
  transition:left var(--dur-1) var(--ease),right var(--dur-1) var(--ease);
}

.nav-link:hover,
.nav-link:focus,
.nav-link.is-active{color:var(--accent);}

.nav-link:hover::after,
.nav-link:focus::after,
.nav-link.is-active::after{left:0;right:0;}

.header-actions{
  display:flex;
  align-items:center;
  gap:16px;
}

.header-cta{
  min-height:44px;
  padding:0 20px;
  font-size:14px;
}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--radius-s);
  background:var(--card);
  color:var(--ink);
  transition:border-color var(--dur-1) var(--ease),color var(--dur-1) var(--ease);
}

.nav-toggle:hover,
.nav-toggle:focus{border-color:var(--accent);color:var(--accent);}

.nav-toggle span{
  display:block;
  width:18px;
  height:1.5px;
  background:currentColor;
  position:relative;
}

.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:1.5px;
  background:currentColor;
}

.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 07 移动抽屉 ---------- */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:var(--bg);
  display:flex;
  flex-direction:column;
  padding:20px 20px 32px;
  transform:translateY(-102%);
  transition:transform var(--dur-2) var(--ease);
  visibility:hidden;
  overflow-y:auto;
}

.nav-drawer.is-open{
  transform:translateY(0);
  visibility:visible;
}

.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:44px;
  margin-bottom:12px;
}

.drawer-close{
  width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--radius-s);
  color:var(--ink);
  background:var(--card);
}

.drawer-nav{
  display:flex;
  flex-direction:column;
  border-top:1px solid var(--line);
}

.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:56px;
  border-bottom:1px solid var(--line);
  color:var(--ink);
  font-size:16px;
}

.drawer-nav a.is-active{color:var(--accent);}

.drawer-nav a span{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--text-3);
}

.drawer-foot{
  margin-top:28px;
  display:flex;
  flex-direction:column;
  gap:16px;
}

.drawer-note{
  font-size:13px;
  color:var(--text-3);
  line-height:1.8;
}

/* ---------- 08 面包屑 ---------- */
.breadcrumb-wrap{
  padding-top:24px;
  padding-bottom:4px;
}

.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  list-style:none;
  margin:0;
  padding:0;
  font-size:13px;
  color:var(--text-3);
}

.breadcrumb li{line-height:1.6;}

.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--accent);}

.breadcrumb .sep{color:var(--text-3);}

.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:600;}

/* ---------- 09 页头与筛选条 ---------- */
.page-head{
  padding-top:48px;
  padding-bottom:40px;
}

.page-head h1{
  max-width:820px;
  margin-bottom:20px;
}

.page-head .lead{max-width:700px;margin-bottom:0;}

.head-meta{
  border-left:1px solid var(--line);
  padding-left:24px;
  list-style:none;
  margin:8px 0 0;
  padding-top:0;
  padding-bottom:0;
}

.head-meta li{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
  color:var(--text-2);
}

.head-meta li:first-child{padding-top:0;}

.head-meta li .mono{
  font-size:20px;
  color:var(--ink);
  font-weight:600;
  letter-spacing:-.01em;
}

.filter-bar{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  padding-top:28px;
  border-top:1px solid var(--line);
}

.filter-label{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-right:4px;
}

.chip{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--card);
  color:var(--text-2);
  font-size:14px;
  transition:background-color var(--dur-1) var(--ease),
             border-color var(--dur-1) var(--ease),
             color var(--dur-1) var(--ease);
}

.chip:hover,
.chip:focus{
  border-color:var(--accent);
  color:var(--accent);
}

.chip.is-active{
  background:var(--ink);
  border-color:var(--ink);
  color:var(--footer-text);
}

/* ---------- 10 画廊网格 ---------- */
.gallery-section{
  padding-bottom:var(--sec-y);
}

.gallery{
  column-count:3;
  column-gap:24px;
}

.gal-card{
  break-inside:avoid;
  margin:0 0 24px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--dur-2) var(--ease),
             box-shadow var(--dur-2) var(--ease);
}

.gal-card:hover,
.gal-card:focus-within{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
}

.gal-media{
  position:relative;
  overflow:hidden;
  background:var(--bg-soft);
}

.gal-media img{
  width:100%;
  aspect-ratio:4 / 3;
  object-fit:cover;
  transition:transform var(--dur-2) var(--ease);
}

.gal-card.is-tall .gal-media img{
  aspect-ratio:3 / 4;
}

.gal-card:hover .gal-media img,
.gal-card:focus-within .gal-media img{
  transform:scale(1.03);
}

.gal-overlay{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:16px 18px 14px;
  background:rgba(28,27,24,.9);
  opacity:0;
  transform:translateY(12px);
  transition:opacity var(--dur-2) var(--ease),
             transform var(--dur-2) var(--ease);
}

.gal-card:hover .gal-overlay,
.gal-card:focus-within .gal-overlay{
  opacity:1;
  transform:translateY(0);
}

.gal-overlay h3{
  color:var(--footer-text);
  font-size:16px;
  line-height:1.5;
  letter-spacing:0;
  margin:0 0 10px;
}

.gal-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0;
}

.gal-tags span{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:rgba(247,245,241,.78);
  border:1px solid rgba(247,245,241,.26);
  border-radius:var(--radius-pill);
  padding:2px 9px;
  line-height:1.6;
}

.gal-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:14px 18px;
  border-top:1px solid var(--line);
  background:var(--card);
}

.gal-no{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--accent);
}

.gal-result{
  font-size:13px;
  color:var(--text-2);
  text-align:right;
  line-height:1.5;
}

.gallery-note{
  margin-top:28px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
  line-height:1.9;
  max-width:820px;
}

/* ---------- 11 数据横条 ---------- */
.stat-band{
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:40px 0;
}

.stats{
  align-items:stretch;
}

.stat{
  padding:6px 20px;
  border-left:1px solid var(--line);
}

.stat:first-child{
  border-left:0;
  padding-left:0;
}

.stat-num{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:clamp(28px,3vw,38px);
  font-weight:600;
  letter-spacing:-.02em;
  color:var(--ink);
  line-height:1.1;
}

.stat-unit{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--accent);
  margin-left:6px;
  letter-spacing:.04em;
}

.stat-label{
  margin:8px 0 0;
  font-size:13px;
  line-height:1.6;
  color:var(--text-2);
}

/* ---------- 12 深色 CTA ---------- */
.cta-section{
  padding-top:var(--sec-y);
  padding-bottom:var(--sec-y);
}

.cta-band{
  background:var(--ink);
  border-radius:var(--radius-m);
  padding:56px 48px;
  color:var(--footer-text);
}

.cta-band h2{
  color:var(--footer-text);
  font-size:clamp(22px,2.4vw,30px);
  margin-bottom:14px;
}

.cta-band p{
  color:var(--footer-text-2);
  font-size:15px;
  line-height:1.8;
  margin:0;
  max-width:520px;
}

.cta-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  justify-content:flex-end;
}

.cta-legal{
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid var(--footer-line);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--footer-text-2);
}

/* ---------- 13 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--footer-text);
  padding:72px 0 0;
  margin-top:0;
}

.footer-brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  margin-bottom:18px;
  color:var(--footer-text);
}

.footer-brand:hover{color:var(--footer-text);}

.footer-brand-mark{
  font-size:24px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1;
  color:var(--footer-text);
}

.footer-brand-sub{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--footer-text-2);
  line-height:1;
}

.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:var(--footer-text-2);
  max-width:320px;
  margin:0 0 22px;
}

.footer-contact{
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:2.1;
  color:var(--footer-text-2);
  letter-spacing:.02em;
}

.footer-col h4{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--footer-text-2);
  margin:0 0 6px;
}

.footer-col ul{
  list-style:none;
  margin:0;
  padding:0;
}

.footer-col li{margin:0;}

.footer-col a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:14px;
  color:var(--footer-text-2);
  transition:color var(--dur-1) var(--ease);
}

.footer-col a:hover,
.footer-col a:focus{color:var(--footer-text);}

.footer-sub-note{
  font-size:13px;
  line-height:1.8;
  color:var(--footer-text-2);
  margin:0 0 16px;
  max-width:340px;
}

.footer-form{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

.footer-form input[type="email"]{
  flex:1 1 200px;
  min-width:0;
  height:48px;
  margin:0;
  padding:0 16px;
  background:transparent;
  border:1px solid rgba(247,245,241,.24);
  border-radius:var(--radius-s);
  color:var(--footer-text);
  font-size:14px;
  box-shadow:none;
  transition:border-color var(--dur-1) var(--ease),
             box-shadow var(--dur-1) var(--ease);
}

.footer-form input[type="email"]::placeholder{color:rgba(185,180,170,.8);}

.footer-form input[type="email"]:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(47,107,94,.22);
  background:transparent;
}

.footer-form .btn{
  min-height:48px;
  padding:0 22px;
}

.footer-bottom{
  margin-top:56px;
  padding:22px 0 28px;
  border-top:1px solid var(--footer-line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--footer-text-2);
}

.footer-bottom p{margin:0;line-height:1.8;}

.footer-bottom .dot{
  display:inline-block;
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--accent);
  margin:0 10px;
  vertical-align:middle;
}

/* ---------- 14 动效与可访问性 ---------- */
.reveal-item{
  opacity:0;
  transform:translateY(12px);
  transition:opacity var(--dur-3) var(--ease),
             transform var(--dur-3) var(--ease);
}

.reveal-item.is-visible{
  opacity:1;
  transform:translateY(0);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
.btn:focus-visible,
.chip:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

.sr-only{
  position:absolute !important;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

body.drawer-open{overflow:hidden;}

/* ---------- 15 响应式断点 ---------- */
@media screen and (max-width:1279px){
  :root{--pad-x:28px;--sec-y:84px;}
  .gallery{column-count:2;}
}

@media screen and (max-width:1023px){
  :root{--pad-x:24px;--sec-y:72px;}
  .main-nav{gap:22px;}
  .header-cta{display:none;}
  .head-meta{border-left:0;padding-left:0;margin-top:32px;}
  .head-meta li:first-child{padding-top:14px;border-top:1px solid var(--line);}
  .cta-band{padding:44px 36px;}
  .cta-actions{justify-content:flex-start;margin-top:28px;}
  .stat{padding:6px 16px;}
}

@media screen and (max-width:767px){
  :root{--pad-x:20px;--sec-y:56px;--header-h:60px;}
  body{font-size:15px;line-height:1.8;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{gap:16px;}
  .brand-mark{font-size:21px;}
  .brand-sub{font-size:11px;}
  .breadcrumb-wrap{padding-top:18px;}
  .page-head{padding-top:32px;padding-bottom:28px;}
  .page-head h1{margin-bottom:16px;}
  .filter-bar{padding-top:22px;gap:10px;}
  .filter-label{width:100%;margin-bottom:2px;}
  .gallery{column-count:1;column-gap:0;}
  .gal-overlay{opacity:1;transform:none;position:static;background:transparent;padding:16px 18px 0;}
  .gal-overlay h3{color:var(--ink);font-size:16px;}
  .gal-tags span{color:var(--text-3);border-color:var(--line);}
  .gal-card:hover{transform:none;box-shadow:var(--shadow-1);}
  .gal-card:hover .gal-media img{transform:none;}
  .stat-band{padding:32px 0;}
  .stat{border-left:0;padding:14px 0;border-top:1px solid var(--line);}
  .stat:first-child{border-top:0;padding-top:0;}
  .cta-band{padding:32px 22px;border-radius:var(--radius-m);}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .site-footer{padding-top:52px;}
  .footer-bottom{margin-top:40px;}
  .footer-col{margin-top:28px;}
  .footer-form .btn{width:100%;}
}

@media screen and (max-width:519px){
  h1{font-size:30px;}
  .head-meta li .mono{font-size:18px;}
  .gal-card{border-radius:var(--radius-s);}
  .section-head{gap:12px;margin-bottom:28px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal-item{opacity:1 !important;transform:none !important;}
}