/* roulang page: index */
:root{
  --ink-950:#080A0D;
  --ink-800:#14181F;
  --ink-600:#2A313B;
  --ink-400:#5A6472;
  --paper:#F6F5F2;
  --paper-2:#FFFFFF;
  --line:#E4E2DD;
  --brand:#12A594;
  --brand-600:#0C8477;
  --brand-50:#E8F6F3;
  --star-200:#9BDCCF;
  --ember:#B4552D;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(8,10,13,.04), 0 12px 32px -16px rgba(8,10,13,.10);
  --sh-2:0 16px 44px -18px rgba(8,10,13,.16);
  --dur-fast:160ms;
  --dur-base:260ms;
  --dur-slow:420ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Display","HarmonyOS Sans",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-600);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-50);color:var(--ink-800);}

/* ============ 容器与栅格 ============ */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:28px;}
.section{padding:124px 0;}
.section--tight{padding:88px 0;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ============ 通用文字 ============ */
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;color:var(--brand);
  text-transform:uppercase;font-weight:600;
  font-family:var(--font-num);
}
.kicker::before{content:"";width:32px;height:2px;background:var(--brand);display:block;}
.kicker--dark{color:var(--star-200);}
.kicker--dark::before{background:var(--star-200);}
.h1{
  font-size:clamp(2.4rem,6vw,4.25rem);
  font-weight:700;letter-spacing:-.02em;line-height:1.08;
  color:var(--ink-950);
}
.h2{
  font-size:clamp(1.75rem,3.4vw,2.6rem);
  font-weight:700;line-height:1.2;letter-spacing:-.01em;
  color:var(--ink-950);
}
.h3{font-size:1.32rem;font-weight:600;line-height:1.4;color:var(--ink-800);}
.lead{font-size:1.02rem;color:var(--ink-400);line-height:1.9;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background var(--dur-base) var(--ease),color var(--dur-base) var(--ease),
             border-color var(--dur-base) var(--ease),transform var(--dur-fast) var(--ease),
             box-shadow var(--dur-base) var(--ease);
}
.btn svg{transition:transform var(--dur-base) var(--ease);}
.btn:hover svg{transform:translateX(2px);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-600);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--ink-950);border:1px solid var(--ink-950);}
.btn-ghost:hover{background:var(--ink-950);color:#fff;}
.btn-ghost:active{transform:translateY(1px);}
.btn-light{background:#fff;color:var(--ink-950);border:1px solid rgba(255,255,255,.5);}
.btn-light:hover{background:rgba(255,255,255,.88);}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);
  font-size:15px;font-weight:600;min-height:44px;
  transition:color var(--dur-base) var(--ease);
}
.link-more svg{transition:transform var(--dur-base) var(--ease);}
.link-more:hover{color:var(--brand-600);}
.link-more:hover svg{transform:translateX(3px);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper-2);border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur-base) var(--ease),background var(--dur-base) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px -20px rgba(8,10,13,.35);background:rgba(255,255,255,.98);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:26px;height:26px;flex-shrink:0;}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-950);letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:30px;margin-left:14px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-600);
  padding:8px 0;transition:color var(--dur-base) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:14px;height:2px;
  background:var(--brand);transform:translateX(-50%) scaleX(0);
  transform-origin:center;transition:transform var(--dur-base) var(--ease);
}
.nav-link:hover{color:var(--ink-950);}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{color:var(--ink-950);}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color var(--dur-base) var(--ease),background var(--dur-base) var(--ease);
}
.search-box:focus-within{border-color:var(--brand);background:#fff;}
.search-box svg{flex-shrink:0;color:var(--ink-400);}
.search-box input{
  border:0;background:transparent;outline:none;width:150px;font-size:14.5px;
}
.search-box input::placeholder{color:var(--ink-400);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);color:var(--ink-800);
}
.drawer{
  position:fixed;inset:72px 0 0 0;background:#fff;z-index:55;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity var(--dur-base) var(--ease),transform var(--dur-base) var(--ease);
  display:flex;flex-direction:column;padding:12px 22px 22px;overflow-y:auto;
}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer a.drawer-link{
  display:flex;align-items:center;height:52px;font-size:16px;font-weight:500;
  color:var(--ink-800);border-bottom:1px solid var(--line);
}
.drawer a.drawer-link.is-active{color:var(--brand);}
.drawer .drawer-cta{margin-top:auto;padding-top:18px;}
.drawer .drawer-cta .btn{width:100%;}

/* ============ Hero ============ */
.hero{position:relative;min-height:620px;display:flex;align-items:center;overflow:hidden;background:var(--ink-950);}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.92;}
.hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 78% 22%, rgba(155,220,207,.10), transparent 46%),
    linear-gradient(96deg, rgba(8,10,13,.74) 8%, rgba(8,10,13,.62) 52%, rgba(8,10,13,.50) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:96px;padding-bottom:120px;}
.hero-col{max-width:660px;}
.hero h1{color:#fff;margin-top:22px;}
.hero-sub{color:rgba(246,245,242,.82);font-size:1.06rem;margin-top:22px;max-width:520px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px;}
.hero-stats{display:flex;align-items:stretch;gap:0;margin-top:48px;flex-wrap:wrap;}
.hero-stat{padding:0 26px;border-left:1px solid rgba(246,245,242,.22);}
.hero-stat:first-child{padding-left:0;border-left:0;}
.hero-stat b{display:block;font-size:1.9rem;font-weight:700;color:#fff;line-height:1.1;font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.hero-stat span{display:block;font-size:13px;color:rgba(246,245,242,.62);letter-spacing:.06em;margin-top:6px;}
.hero-scroll{
  position:absolute;left:40px;bottom:26px;z-index:2;display:flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.18em;color:rgba(246,245,242,.5);font-family:var(--font-num);
}
.hero-scroll i{display:block;width:64px;height:1px;background:rgba(246,245,242,.42);}

/* ============ 编号块列表 ============ */
.sticky-head{position:sticky;top:104px;align-self:start;}
.feature-block{display:flex;gap:24px;padding:26px 20px 26px 18px;border-top:1px solid var(--line);position:relative;transition:background var(--dur-base) var(--ease);}
.feature-block:last-child{border-bottom:1px solid var(--line);}
.feature-block::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:2px;
  background:var(--brand);transform:scaleY(0);transform-origin:top;
  transition:transform var(--dur-base) var(--ease);
}
.feature-block:hover{background:var(--paper-2);}
.feature-block:hover::before{transform:scaleY(1);}
.feature-no{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:14px;
  font-weight:700;color:var(--star-200);letter-spacing:.08em;padding-top:6px;width:34px;flex-shrink:0;
}
.feature-body h3{margin-bottom:8px;}
.feature-body p{color:var(--ink-400);font-size:15.4px;line-height:1.8;}
.feature-ico{
  width:38px;height:38px;border-radius:10px;background:var(--brand-50);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  margin-bottom:12px;
}

/* ============ 卡片 ============ */
.card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh-1);
  transition:transform var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--sh-2);}
.card-tall{padding:34px 32px;}
.card-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:6px;
  background:var(--brand-50);color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.card h3{margin:16px 0 10px;}
.card p{color:var(--ink-400);font-size:15.4px;}
.check-list{margin-top:18px;display:grid;gap:10px;}
.check-list li{display:flex;gap:9px;font-size:14.4px;color:var(--ink-600);}
.check-list li svg{flex-shrink:0;margin-top:5px;color:var(--brand);}

/* ============ 场景交错 ============ */
.scene{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:48px;align-items:center;}
.scene + .scene{margin-top:96px;}
.scene-media{grid-column:span 6;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--paper-2);}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform var(--dur-slow) var(--ease);}
.scene-media:hover img{transform:scale(1.02);}
.scene-text{grid-column:span 6;}
.scene-text h3{margin:16px 0 14px;font-size:1.5rem;}
.scene-text p{color:var(--ink-400);}
.scene-rev .scene-media{order:2;}
.scene-rev .scene-text{order:1;}

/* ============ 案例 ============ */
.case-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
.case-card{border:1px solid var(--line);border-radius:var(--r-card);background:var(--paper-2);box-shadow:var(--sh-1);overflow:hidden;transition:transform var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease);}
.case-card:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--sh-2);}
.case-feature{grid-column:span 6;display:flex;flex-direction:column;}
.case-feature img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.case-feature .case-body{padding:30px;flex:1;display:flex;flex-direction:column;}
.case-quote{font-size:1.22rem;line-height:1.7;color:var(--ink-800);font-weight:600;}
.case-meta{margin-top:auto;padding-top:22px;display:flex;align-items:flex-end;justify-content:space-between;gap:16px;border-top:1px solid var(--line);}
.case-meta .who{font-size:13.5px;color:var(--ink-400);}
.case-meta .figure{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:1.6rem;font-weight:700;color:var(--brand);line-height:1;}
.case-meta .figure span{display:block;font-size:12px;color:var(--ink-400);font-weight:500;letter-spacing:.06em;margin-top:5px;font-family:var(--font-cn);}
.case-mini{grid-column:span 3;display:flex;gap:16px;padding:24px;}
.case-mini img{width:88px;height:88px;border-radius:12px;object-fit:cover;flex-shrink:0;}

/* ============ 方案 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:start;}
.plan-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px 30px;box-shadow:var(--sh-1);position:relative;
  transition:transform var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease);
}
.plan-card:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--sh-2);}
.plan-card.is-featured{border:2px solid var(--brand);transform:translateY(-8px);}
.plan-card.is-featured:hover{transform:translateY(-12px);}
.plan-badge{
  position:absolute;top:-13px;left:30px;height:26px;padding:0 12px;border-radius:6px;
  background:var(--ember);color:#fff;font-size:12.5px;font-weight:600;display:inline-flex;align-items:center;letter-spacing:.06em;
}
.plan-name{font-size:15px;font-weight:600;color:var(--ink-400);letter-spacing:.08em;}
.plan-price{display:flex;align-items:baseline;gap:6px;margin:16px 0 10px;}
.plan-price b{font-size:clamp(2rem,3vw,2.6rem);font-weight:700;color:var(--ink-950);font-family:var(--font-num);font-variant-numeric:tabular-nums;line-height:1;}
.plan-price span{font-size:13.5px;color:var(--ink-400);}
.plan-desc{font-size:14.6px;color:var(--ink-400);min-height:52px;}
.plan-card .btn{width:100%;margin-top:20px;}
.plan-tip{text-align:center;margin-top:34px;font-size:15px;color:var(--ink-400);}
.plan-tip a{color:var(--brand);font-weight:600;border-bottom:1px solid rgba(18,165,148,.35);}

/* ============ 资讯列表（CMS） ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:44px;}
.post-feature{grid-column:span 8;display:flex;gap:0;border:1px solid var(--line);border-radius:var(--r-card);background:var(--paper-2);box-shadow:var(--sh-1);overflow:hidden;transition:transform var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease);}
.post-feature:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--sh-2);}
.post-feature .thumb{width:50%;flex-shrink:0;background:var(--paper);}
.post-feature .thumb img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;}
.post-feature .body{padding:32px;display:flex;flex-direction:column;gap:12px;}
.post-feature h3{font-size:1.42rem;}
.post-feature p{color:var(--ink-400);font-size:15.2px;}
.post-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--ink-400);font-family:var(--font-num);}
.post-side{grid-column:span 4;display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line);}
.post-list-item{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);transition:padding var(--dur-base) var(--ease);}
.post-list-item:hover{padding-left:6px;}
.post-list-item .idx{font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--star-200);padding-top:3px;width:24px;flex-shrink:0;}
.post-list-item h4{font-size:15.4px;font-weight:600;color:var(--ink-800);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-list-item .post-meta{margin-top:8px;font-size:12.5px;gap:8px;}
.post-card{grid-column:span 4;border:1px solid var(--line);border-radius:var(--r-card);background:var(--paper-2);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease);}
.post-card:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--sh-2);}
.post-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--paper);}
.post-card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-card h3{font-size:1.06rem;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card p{font-size:14.6px;color:var(--ink-400);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .post-meta{margin-top:auto;font-size:12.5px;}
.empty-state{
  grid-column:span 12;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:64px 30px;text-align:center;background:var(--paper-2);
}
.empty-state svg{margin:0 auto 18px;color:var(--star-200);}
.empty-state p{color:var(--ink-400);margin-bottom:20px;}

/* ============ FAQ ============ */
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink-800);
  transition:color var(--dur-base) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item .plus{
  width:22px;height:22px;flex-shrink:0;position:relative;transition:transform var(--dur-base) var(--ease);
}
.faq-item .plus::before,.faq-item .plus::after{
  content:"";position:absolute;background:var(--ink-400);transition:background var(--dur-base) var(--ease);
}
.faq-item .plus::before{left:0;top:10px;width:22px;height:2px;}
.faq-item .plus::after{left:10px;top:0;width:2px;height:22px;}
.faq-item[open] .plus{transform:rotate(45deg);}
.faq-item[open] .plus::before,.faq-item[open] .plus::after{background:var(--brand);}
.faq-item p{padding:0 42px 26px 0;color:var(--ink-400);line-height:1.9;font-size:15.6px;}
.faq-item:first-child{border-top:1px solid var(--line);}

/* ============ 深色 CTA ============ */
.cta-band{
  position:relative;background:var(--ink-950);color:var(--paper);
  padding:110px 0;text-align:center;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:radial-gradient(rgba(155,220,207,.9) 1px, transparent 1px);
  background-size:26px 26px;
}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto;}
.cta-band h2{color:#fff;}
.cta-band p{color:rgba(246,245,242,.72);margin-top:18px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-950);color:var(--paper);}
.footer-top{padding:96px 0 64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{color:rgba(246,245,242,.6);font-size:14.6px;margin-top:18px;max-width:300px;line-height:1.85;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;letter-spacing:.1em;margin-bottom:18px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14.6px;color:rgba(246,245,242,.62);transition:color var(--dur-base) var(--ease);}
.footer-col a:hover{color:var(--star-200);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:26px 0 34px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(246,245,242,.5);}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity var(--dur-slow) var(--ease),transform var(--dur-slow) var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .grid-12{gap:24px;}
  .feature-no{width:30px;}
}
@media (max-width:1024px){
  .scene{grid-template-columns:repeat(1,minmax(0,1fr));gap:28px;}
  .scene-media,.scene-text{grid-column:span 1;order:0;}
  .scene-rev .scene-media{order:0;}
  .scene-rev .scene-text{order:0;}
  .case-feature{grid-column:span 12;}
  .case-mini{grid-column:span 6;}
  .post-feature{grid-column:span 12;flex-direction:column;}
  .post-feature .thumb{width:100%;}
  .post-side{grid-column:span 12;}
  .post-card{grid-column:span 6;}
  .plan-grid{grid-template-columns:repeat(1,minmax(0,1fr));}
  .plan-card.is-featured{transform:none;}
  .plan-card.is-featured:hover{transform:translateY(-4px);}
  .sticky-head{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media (max-width:768px){
  .container{padding:0 22px;}
  .section{padding:76px 0;}
  .section--tight{padding:64px 0;}
  .hero{min-height:520px;}
  .hero-inner{padding-top:72px;padding-bottom:96px;}
  .hero-stat{padding:0 18px;}
  .hero-stat b{font-size:1.5rem;}
  .hero-scroll{left:22px;bottom:18px;}
  .hero-scroll i{width:36px;}
  .site-header .nav-wrap{height:64px;}
  .drawer{inset:64px 0 0 0;}
  .post-card{grid-column:span 12;}
  .case-mini{grid-column:span 12;}
  .news-head{margin-bottom:30px;}
  .cta-band{padding:80px 0;}
  .footer-top{padding:68px 0 48px;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .grid-12{gap:18px;}
  .card{padding:24px;}
  .card-tall{padding:26px 22px;}
  .post-feature .body{padding:24px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1 !important;transform:none !important;}
  .card:hover,.post-card:hover,.post-feature:hover,.plan-card:hover,.case-card:hover{transform:none !important;}
}

/* roulang page: article */
:root{
  --ink-950:#080A0D;
  --ink-800:#14181F;
  --ink-600:#2A313B;
  --ink-400:#5A6472;
  --paper:#F6F5F2;
  --paper-2:#FFFFFF;
  --line:#E4E2DD;
  --brand:#12A594;
  --brand-600:#0C8477;
  --brand-50:#E8F6F3;
  --star-200:#9BDCCF;
  --ember:#B4552D;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(8,10,13,.04), 0 12px 32px -16px rgba(8,10,13,.10);
  --shadow-2:0 16px 44px -18px rgba(8,10,13,.16);
  --dur-fast:160ms;
  --dur-base:260ms;
  --dur-slow:420ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-800);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-600);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
@media(max-width:768px){.container{padding:0 22px;}}
h1,h2,h3,h4{color:var(--ink-950);margin:0;letter-spacing:-.01em;}
p{margin:0 0 1.4em;}
p:last-child{margin-bottom:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur-base) var(--ease),background var(--dur-base) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 28px -22px rgba(8,10,13,.55);}
.nav-wrap{display:flex;align-items:center;gap:30px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:26px;height:26px;flex:none;}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-950);letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-block;padding:25px 0;
  font-size:15px;font-weight:500;color:var(--ink-600);
  transition:color var(--dur-fast) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:15px;width:14px;height:2px;
  background:var(--brand);transform:translateX(-50%) scaleX(0);
  transform-origin:center;transition:transform var(--dur-base) var(--ease);
}
.nav-link:hover{color:var(--ink-950);}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{color:var(--ink-950);font-weight:600;}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:9px;height:44px;padding:0 16px;
  background:#F1F0EC;border:1px solid transparent;border-radius:var(--radius-btn);
  color:var(--ink-400);transition:border-color var(--dur-fast) var(--ease),background var(--dur-fast) var(--ease);
}
.search-box:focus-within{border-color:var(--brand);background:var(--paper-2);}
.search-box input{
  border:0;background:transparent;outline:none;font-size:14px;color:var(--ink-800);
  width:176px;font-family:inherit;
}
.search-box input::placeholder{color:var(--ink-400);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease),
             box-shadow var(--dur-base) var(--ease);
}
.btn svg{transition:transform var(--dur-base) var(--ease);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-600);color:#fff;}
.btn-primary:hover svg{transform:translateX(2px);}
.btn-primary:active{background:var(--brand-600);transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--ink-950);border-color:var(--ink-950);}
.btn-ghost:hover{background:var(--ink-950);color:var(--paper);}
.btn-ghost:hover svg{transform:translateX(2px);}
.btn-ghost:active{background:var(--ink-800);color:var(--paper);}
.btn-light{background:var(--paper-2);color:var(--ink-950);border-color:var(--line);}
.btn-light:hover{background:var(--paper);color:var(--ink-950);border-color:var(--ink-400);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-btn);
  color:var(--ink-800);cursor:pointer;transition:border-color var(--dur-fast) var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);}
.mobile-drawer{
  display:none;position:fixed;inset:73px 0 0 0;z-index:55;background:var(--paper-2);
  padding:8px 0 0;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a.m-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 22px;font-size:16px;font-weight:500;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.m-link.is-active{color:var(--brand);font-weight:600;}
.mobile-drawer .m-cta{padding:20px 22px 32px;}
.mobile-drawer .m-cta .btn{width:100%;}
@media(max-width:1024px){
  .nav-links,.search-box{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-wrap{gap:16px;height:72px;}
  .nav-right .btn-primary{display:none;}
}

/* ---------- breadcrumb ---------- */
.breadcrumb-bar{background:var(--paper);border-bottom:1px solid var(--line);}
.breadcrumb{
  display:flex;align-items:center;gap:10px;padding:16px 0;
  font-size:13px;color:var(--ink-400);letter-spacing:.02em;
  overflow:hidden;
}
.breadcrumb a{color:var(--ink-400);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{
  color:var(--ink-800);font-weight:600;
  max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- article layout ---------- */
.article-section{padding:56px 0 112px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 328px;gap:64px;align-items:start;}
.article-main{min-width:0;}
.article-head{max-width:760px;}
.kicker{
  display:inline-block;margin-bottom:18px;font-size:12px;letter-spacing:.16em;
  color:var(--ink-400);text-transform:uppercase;
}
.article-head h1{
  font-size:clamp(1.9rem,4vw,3rem);
  line-height:1.14;font-weight:700;letter-spacing:-.02em;margin-bottom:22px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  font-size:13px;color:var(--ink-400);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);display:inline-block;}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  background:var(--brand-50);color:var(--brand);font-size:13px;font-weight:600;
  border-radius:6px;letter-spacing:.02em;
}
.article-divider{height:1px;background:var(--line);margin:32px 0 40px;max-width:760px;}

.article-body{
  max-width:748px;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-600);
  word-wrap:break-word;
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.45em;}
.article-body h2{
  position:relative;font-size:clamp(1.35rem,2.2vw,1.7rem);font-weight:700;line-height:1.35;
  margin:2.4em 0 .9em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:1.1em;background:var(--brand);border-radius:2px;
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:1.16rem;font-weight:600;color:var(--ink-800);margin:1.9em 0 .7em;}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:1.35em;}
.article-body li{margin-bottom:.55em;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-weight:600;}
.article-body blockquote{
  margin:1.8em 0;padding:18px 24px;background:var(--brand-50);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
  color:var(--ink-600);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:1.6em 0 .6em;}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:.7em;}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(18,165,148,.35);}
.article-body a:hover{border-bottom-color:var(--brand-600);}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  font-size:.88em;background:#F1F0EC;padding:2px 6px;border-radius:6px;color:var(--ink-800);
}
.article-body pre{
  background:#F1F0EC;border:1px solid var(--line);border-radius:12px;
  padding:18px 20px;overflow-x:auto;margin:1.6em 0;
}
.article-body pre code{background:transparent;padding:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;display:block;overflow-x:auto;white-space:nowrap;
}
.article-body table th,.article-body table td{border:1px solid var(--line);padding:12px 16px;text-align:left;}
.article-body table th{background:#F1F0EC;color:var(--ink-800);font-weight:600;white-space:nowrap;}
@media(max-width:520px){
  .article-body{font-size:16px;}
}

/* ---------- empty state ---------- */
.empty-state{
  max-width:748px;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:48px 32px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-state svg{margin:0 auto 18px;}
.empty-state h2{font-size:1.25rem;margin-bottom:12px;}
.empty-state p{color:var(--ink-400);margin-bottom:24px;}

/* ---------- article footer blocks ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:56px 0 0;max-width:748px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);font-size:13.5px;font-weight:500;
  transition:background var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease);
}
.tag:hover{background:var(--brand);color:#fff;}
.pager{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px;max-width:748px;
}
.pager a{
  display:block;padding:22px 24px;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);color:var(--ink-800);
  transition:transform var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease);
}
.pager a:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--shadow-2);color:var(--ink-800);}
.pager .pager-label{display:block;font-size:12px;letter-spacing:.14em;color:var(--ink-400);margin-bottom:8px;}
.pager .pager-title{font-size:16px;font-weight:600;color:var(--ink-950);}

/* ---------- side panel ---------- */
.side-panel{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px;}
.panel{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.panel h2,.panel h3{
  font-size:15px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;
  padding-bottom:14px;border-bottom:1px solid var(--line);
}
.toc{list-style:none;margin:0;padding:0;}
.toc li{margin-bottom:2px;}
.toc a{
  display:block;padding:9px 0 9px 14px;font-size:14.5px;color:var(--ink-600);
  border-left:2px solid transparent;transition:color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease);
}
.toc a:hover{color:var(--brand);border-left-color:var(--brand);}
.mini-list{list-style:none;margin:0;padding:0;}
.mini-list li{padding:14px 0;border-bottom:1px solid var(--line);}
.mini-list li:last-child{border-bottom:0;padding-bottom:0;}
.mini-list li:first-child{padding-top:0;}
.mini-list a{display:block;font-size:14.5px;font-weight:500;color:var(--ink-800);line-height:1.6;}
.mini-list a:hover{color:var(--brand);}
.mini-list .meta{display:block;margin-top:6px;font-size:12.5px;color:var(--ink-400);font-variant-numeric:tabular-nums;}
.panel-cta{background:var(--ink-950);border-color:var(--ink-950);color:rgba(246,245,242,.72);}
.panel-cta h3{color:var(--paper);border-bottom-color:rgba(255,255,255,.12);}
.panel-cta p{font-size:14.5px;line-height:1.8;color:rgba(246,245,242,.72);margin-bottom:18px;}
.panel-cta .btn{width:100%;}
.share-row{display:flex;gap:10px;margin-top:4px;}
.share-row a{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;color:var(--ink-400);
  transition:color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease);
}
.share-row a:hover{color:var(--brand);border-color:var(--brand);}

/* ---------- related posts ---------- */
.related-section{padding:0 0 112px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2rem);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);
}
.link-arrow svg{transition:transform var(--dur-base) var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--shadow-2);}
.post-cover{aspect-ratio:16/10;background:var(--paper);overflow:hidden;}
.post-cover img{width:100%;height:100%;object-fit:cover;}
.post-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-body h3{font-size:17px;font-weight:600;line-height:1.55;}
.post-body h3 a{color:var(--ink-950);}
.post-body h3 a:hover{color:var(--brand);}
.post-body p{font-size:14.5px;color:var(--ink-400);margin:0;line-height:1.8;}
.post-time{font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;margin-top:auto;}

/* ---------- CTA ---------- */
.cta-section{
  background:var(--ink-950);color:var(--paper);padding:96px 0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:26px 26px;
}
.cta-inner{max-width:720px;margin:0 auto;text-align:center;}
.cta-inner h2{color:var(--paper);font-size:clamp(1.7rem,3vw,2.3rem);margin-bottom:18px;}
.cta-inner p{color:rgba(246,245,242,.72);margin-bottom:32px;}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.cta-actions .btn-light{background:transparent;color:var(--paper);border-color:rgba(246,245,242,.45);}
.cta-actions .btn-light:hover{background:var(--paper);color:var(--ink-950);border-color:var(--paper);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-950);color:var(--paper);}
.footer-top{padding:88px 0 56px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}
.footer-brand .brand-text{color:var(--paper);}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.9;color:rgba(246,245,242,.66);max-width:34ch;}
.footer-col h4{font-size:15px;color:var(--paper);margin-bottom:18px;font-weight:600;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14.5px;color:rgba(246,245,242,.68);}
.footer-col a:hover{color:var(--star-200);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:24px 0 36px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(246,245,242,.55);
}
@media(max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:48px;}
  .side-panel{position:static;}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media(max-width:768px){
  .article-section{padding:40px 0 72px;}
  .related-section{padding-bottom:72px;}
  .cta-section{padding:64px 0;}
  .footer-top{padding:64px 0 40px;}
}
@media(max-width:520px){
  .post-grid{grid-template-columns:minmax(0,1fr);}
  .pager{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .cta-actions .btn{width:100%;}
}
/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity var(--dur-slow) var(--ease),transform var(--dur-slow) var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink-950:#080A0D;
  --ink-800:#14181F;
  --ink-600:#2A313B;
  --ink-400:#5A6472;
  --paper:#F6F5F2;
  --paper-2:#FFFFFF;
  --line:#E4E2DD;
  --brand:#12A594;
  --brand-600:#0C8477;
  --brand-50:#E8F6F3;
  --star-200:#9BDCCF;
  --ember:#B4552D;
  --dur-fast:160ms;
  --dur-base:260ms;
  --dur-slow:420ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --shadow-sm:0 1px 2px rgba(8,10,13,.04),0 12px 32px -16px rgba(8,10,13,.10);
  --shadow-lg:0 16px 44px -18px rgba(8,10,13,.16);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-600);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-800);font-weight:700;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
::selection{background:var(--brand-50);color:var(--ink-800);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur-base) var(--ease),background var(--dur-base) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -18px rgba(8,10,13,.45);background:rgba(255,255,255,.98);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:26px;height:26px;flex-shrink:0;}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-950);letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:30px;margin-left:14px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-600);
  padding:6px 0;line-height:1.4;transition:color var(--dur-fast) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-2px;width:14px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur-base) var(--ease);
}
.nav-link:hover{color:var(--ink-950);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink-950);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 16px;
  background:#F1F0EC;border:1px solid transparent;border-radius:var(--r-btn);
  color:var(--ink-400);min-width:238px;
  transition:border-color var(--dur-fast) var(--ease),background var(--dur-fast) var(--ease);
}
.search-box:focus-within{border-color:var(--brand);background:var(--paper-2);}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;font-size:14.5px;color:var(--ink-800);
}
.search-box input::placeholder{color:var(--ink-400);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;cursor:pointer;
  border:1px solid transparent;
  transition:background var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease);
}
.btn svg{transition:transform var(--dur-base) var(--ease);}
.btn:hover svg{transform:translateX(2px);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-600);color:#fff;}
.btn-primary:active{background:var(--brand-600);transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--ink-950);border-color:var(--ink-950);}
.btn-ghost:hover{background:var(--ink-950);color:var(--paper);}
.btn-ghost:active{transform:translateY(1px);}
.btn-on-dark{background:transparent;color:var(--paper);border-color:rgba(246,245,242,.55);}
.btn-on-dark:hover{background:var(--paper);color:var(--ink-950);border-color:var(--paper);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);color:var(--ink-800);cursor:pointer;
  transition:border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.nav-drawer{
  position:fixed;inset:72px 0 0 0;background:var(--paper-2);z-index:55;
  padding:16px 24px 24px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity var(--dur-base) var(--ease),transform var(--dur-base) var(--ease);
}
.nav-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer-link{
  display:flex;align-items:center;height:52px;font-size:16px;font-weight:500;
  color:var(--ink-600);border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--brand);font-weight:600;}
.drawer-cta{width:100%;margin-top:20px;}
body.no-scroll{overflow:hidden;}

/* ============ 窄幅横幅 ============ */
.cat-banner{
  position:relative;height:clamp(280px,32vw,360px);overflow:hidden;
  display:flex;align-items:flex-end;background:var(--ink-950);
}
.cat-banner-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0;}
.cat-banner-veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,10,13,.78) 0%,rgba(8,10,13,.58) 52%,rgba(8,10,13,.42) 100%);}
.cat-banner-inner{position:relative;z-index:2;padding-bottom:44px;padding-top:44px;width:100%;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(246,245,242,.62);margin-bottom:16px;flex-wrap:wrap;}
.breadcrumb a{color:rgba(246,245,242,.62);transition:color var(--dur-fast) var(--ease);}
.breadcrumb a:hover{color:var(--star-200);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--paper);font-weight:500;}
.cat-banner h1{
  color:#fff;font-size:clamp(2rem,4.2vw,3.2rem);line-height:1.12;letter-spacing:-.02em;
  max-width:20ch;margin-bottom:14px;
}
.cat-banner .lede{color:rgba(246,245,242,.78);font-size:17px;line-height:1.7;max-width:56ch;margin:0;}

/* ============ 筛选标签条 ============ */
.filter-strip{padding:28px 0 8px;border-bottom:1px solid var(--line);background:var(--paper);}
.filter-list{display:flex;gap:10px;flex-wrap:wrap;padding-bottom:20px;}
.chip{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper-2);color:var(--ink-600);font-size:14px;font-weight:500;
  cursor:pointer;transition:all var(--dur-fast) var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand);}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;}
.chip.is-on:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff;}

/* ============ 通用板块 ============ */
.section{padding:112px 0;}
.section-tight{padding:76px 0;}
.kicker-line{display:block;width:32px;height:2px;background:var(--brand);border-radius:2px;margin-bottom:18px;}
.section-head{max-width:640px;margin-bottom:56px;}
.section-head h2,.section-head h3{font-size:clamp(1.75rem,3.4vw,2.6rem);line-height:1.2;letter-spacing:-.015em;margin-bottom:16px;}
.section-head p{color:var(--ink-400);font-size:16.5px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14.5px;
  transition:color var(--dur-fast) var(--ease);
}
.link-arrow svg{transition:transform var(--dur-base) var(--ease);}
.link-arrow:hover{color:var(--brand-600);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ============ 今日速览数据条 ============ */
.snapshot{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2);}
.snapshot-row{display:flex;flex-wrap:wrap;align-items:stretch;padding:36px 0;}
.snapshot-item{flex:1 1 200px;padding:0 32px;border-left:1px solid var(--line);}
.snapshot-item:first-child{border-left:0;padding-left:0;}
.snapshot-num{font-size:clamp(1.9rem,3vw,2.6rem);font-weight:700;color:var(--ink-950);line-height:1.1;letter-spacing:-.02em;}
.snapshot-label{font-size:13px;letter-spacing:.08em;color:var(--ink-400);margin-top:8px;}
.snapshot-note{font-size:13px;color:var(--ink-400);margin-top:6px;}

/* ============ 非对称卡片网格 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:28px;}
.cat-card{
  grid-column:span 6;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;display:flex;flex-direction:column;
  box-shadow:var(--shadow-sm);
  transition:transform var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease);
}
.cat-card:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--shadow-lg);}
.cat-card.span-7{grid-column:span 7;}
.cat-card.span-5{grid-column:span 5;}
.cat-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.cat-index{font-size:15px;font-weight:700;color:var(--star-200);letter-spacing:.08em;}
.cat-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-50);
  display:flex;align-items:center;justify-content:center;color:var(--brand);flex-shrink:0;
}
.cat-card h3{font-size:1.3rem;line-height:1.35;margin-bottom:12px;}
.cat-card .card-desc{color:var(--ink-400);font-size:15.5px;line-height:1.8;margin-bottom:20px;}
.point-list{display:flex;flex-direction:column;gap:10px;margin-bottom:24px;}
.point-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-600);line-height:1.7;}
.point-list li::before{
  content:"";flex-shrink:0;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--brand);
}
.cat-card .card-foot{margin-top:auto;}

/* ============ 时间线板块 ============ */
.timeline-block{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.tl-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:48px;align-items:center;}
.tl-text{grid-column:span 7;}
.tl-media{grid-column:span 5;}
.tl-media img{aspect-ratio:4/3;object-fit:cover;width:100%;background:var(--paper);}
.tl-list{margin-top:32px;border-left:1px dashed var(--line);padding-left:26px;}
.tl-item{position:relative;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:8px;width:11px;height:11px;border-radius:50%;
  background:var(--paper-2);border:2px solid var(--brand);
}
.tl-step{font-size:13px;letter-spacing:.08em;color:var(--brand);font-weight:600;}
.tl-title{font-size:17px;font-weight:600;color:var(--ink-800);margin:6px 0 6px;}
.tl-desc{font-size:15px;color:var(--ink-400);line-height:1.75;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:48px;}
.faq-aside{grid-column:span 4;}
.faq-aside h2{font-size:clamp(1.6rem,2.8vw,2.2rem);line-height:1.25;margin-bottom:16px;}
.faq-aside p{color:var(--ink-400);font-size:15.5px;margin-bottom:22px;}
.faq-main{grid-column:span 8;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink-800);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  flex-shrink:0;width:22px;height:22px;position:relative;margin-top:4px;
  transition:transform var(--dur-base) var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--ink-400);border-radius:2px;
  transition:background var(--dur-base) var(--ease);
}
.faq-item summary .plus::before{left:0;top:10px;width:22px;height:2px;}
.faq-item summary .plus::after{left:10px;top:0;width:2px;height:22px;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item[open] summary .plus::before,
.faq-item[open] summary .plus::after{background:var(--brand);}
.faq-item summary:hover{color:var(--brand);}
.faq-answer{padding:0 0 26px;color:var(--ink-400);font-size:15.5px;line-height:1.9;max-width:64ch;}

/* ============ CTA ============ */
.cta-band{
  position:relative;background:var(--ink-950);color:var(--paper);
  padding:80px 0;overflow:hidden;text-align:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(155,220,207,.06) 1px,transparent 1px);
  background-size:22px 22px;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:660px;margin:0 auto;}
.cta-band h2{color:#fff;font-size:clamp(1.7rem,3.2vw,2.4rem);line-height:1.25;margin-bottom:16px;}
.cta-band p{color:rgba(246,245,242,.72);font-size:16.5px;margin-bottom:32px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-950);color:var(--paper);}
.footer-top{padding:96px 0 56px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{color:rgba(246,245,242,.6);font-size:14.5px;line-height:1.85;margin-top:18px;max-width:34ch;}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.08em;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:rgba(246,245,242,.66);font-size:14.5px;transition:color var(--dur-fast) var(--ease);}
.footer-col a:hover{color:var(--star-200);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:26px 0 34px;border-top:1px solid rgba(255,255,255,.12);
  color:rgba(246,245,242,.5);font-size:13px;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity var(--dur-slow) var(--ease),transform var(--dur-slow) var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

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

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 28px;}
  .nav-links,.search-box{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:84px 0;}
  .section-tight{padding:60px 0;}
  .cat-card.span-7,.cat-card.span-5{grid-column:span 12;}
  .tl-layout,.faq-layout{grid-template-columns:1fr;gap:36px;}
  .tl-text,.tl-media,.faq-aside,.faq-main{grid-column:span 12;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 22px;}
  .cat-grid{gap:20px;}
  .cat-card{padding:26px;}
  .snapshot-row{padding:26px 0;}
  .snapshot-item{flex:1 1 100%;padding:18px 0;border-left:0;border-top:1px solid var(--line);}
  .snapshot-item:first-child{border-top:0;padding-top:0;}
  .footer-top{padding:64px 0 40px;}
  .footer-grid{gap:30px;}
  .cta-band{padding:64px 0;}
}
@media (max-width:520px){
  .brand-text{font-size:17px;}
  .cat-banner{height:auto;min-height:280px;}
  .cat-banner-inner{padding-top:36px;padding-bottom:36px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .tl-list{padding-left:20px;}
  .tl-item::before{left:-26px;}
}

/* roulang page: category2 */
:root{
  --ink-950:#080A0D;
  --ink-800:#14181F;
  --ink-600:#2A313B;
  --ink-400:#5A6472;
  --paper:#F6F5F2;
  --paper-2:#FFFFFF;
  --line:#E4E2DD;
  --brand:#12A594;
  --brand-600:#0C8477;
  --brand-50:#E8F6F3;
  --star-200:#9BDCCF;
  --ember:#B4552D;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(8,10,13,.04), 0 12px 32px -16px rgba(8,10,13,.10);
  --shadow-2:0 16px 44px -18px rgba(8,10,13,.16);
  --dur-fast:160ms;
  --dur-base:260ms;
  --dur-slow:420ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:"SF Pro Display","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-600);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--dur-fast) var(--ease);}
a:hover{color:var(--brand-600);}
button{font-family:inherit;font-size:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-950);font-weight:700;letter-spacing:-0.01em;}
p{margin:0 0 1.3em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.sec-rule{display:block;width:32px;height:2px;background:var(--brand);margin-bottom:18px;border-radius:2px;}
.kicker-line{display:block;width:32px;height:2px;background:var(--brand);margin-bottom:16px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur-base) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 1px 2px rgba(8,10,13,.04), 0 12px 32px -16px rgba(8,10,13,.12);}
.nav-wrap{display:flex;align-items:center;height:72px;gap:34px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-950);font-weight:700;text-decoration:none;}
.brand:hover{color:var(--ink-950);}
.brand-mark{width:26px;height:26px;flex:none;}
.brand-text{font-size:19px;font-weight:700;letter-spacing:-0.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-block;
  padding:6px 0;font-size:15px;font-weight:500;color:var(--ink-600);
  transition:color var(--dur-fast) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:14px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur-base) var(--ease);
}
.nav-link:hover{color:var(--ink-950);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink-950);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-btn);background:#F1F0EC;color:var(--ink-400);
  transition:border-color var(--dur-fast) var(--ease),background var(--dur-fast) var(--ease);
}
.search-box:focus-within{border-color:var(--brand);background:var(--paper-2);}
.search-box input{
  border:0;background:transparent;outline:none;font-size:14px;width:172px;color:var(--ink-800);
}
.search-box input::placeholder{color:var(--ink-400);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color var(--dur-base) var(--ease),color var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),transform var(--dur-fast) var(--ease);
}
.btn svg{transition:transform var(--dur-base) var(--ease);}
.btn:hover svg{transform:translateX(2px);}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-600);color:#fff;}
.btn-ghost{background:transparent;color:var(--ink-950);border-color:var(--ink-950);}
.btn-ghost:hover{background:var(--ink-950);color:var(--paper);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-outline-light:hover{background:var(--paper-2);color:var(--ink-950);border-color:var(--paper-2);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--paper-2);
  color:var(--ink-800);cursor:pointer;transition:border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease);
}
.nav-toggle:hover{border-color:var(--star-200);color:var(--brand);}
.drawer-cta{display:none;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--paper);border-bottom:1px solid var(--line);}
.crumb-bar .container{padding-top:16px;padding-bottom:16px;}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);letter-spacing:.04em;}
.breadcrumb a{color:var(--ink-400);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-800);font-weight:600;}

/* ---------- 页面头部 ---------- */
.page-head{padding:72px 0 0;}
.page-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;margin-bottom:22px;
  background:var(--brand-50);color:var(--brand);border-radius:6px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
}
.page-head h1{
  font-size:clamp(2.05rem,3.6vw,3.05rem);
  line-height:1.16;letter-spacing:-0.02em;max-width:16em;
}
.page-head .lead{
  margin-top:22px;max-width:44em;font-size:17.5px;line-height:1.85;color:var(--ink-600);
}
.head-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:34px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.head-meta .meta-cell{
  flex:1 1 150px;padding:20px 24px 20px 0;
}
.head-meta .meta-cell+.meta-cell{padding-left:24px;border-left:1px solid var(--line);}
.meta-num{font-family:var(--font-num);font-size:1.5rem;font-weight:700;color:var(--ink-950);font-variant-numeric:tabular-nums;line-height:1.2;}
.meta-label{font-size:13px;color:var(--ink-400);letter-spacing:.06em;margin-top:6px;}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}

/* ---------- 字段横滑条 ---------- */
.field-strip-wrap{padding:64px 0 0;}
.strip-title{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:20px;}
.strip-title h2{font-size:1.32rem;font-weight:700;}
.strip-title span{font-size:13px;color:var(--ink-400);letter-spacing:.06em;}
.field-strip{
  display:flex;gap:16px;overflow-x:auto;padding:4px 2px 22px;
  scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;
}
.field-strip::-webkit-scrollbar{height:6px;}
.field-strip::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px;}
.field-card{
  flex:0 0 232px;scroll-snap-align:start;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 22px 20px;box-shadow:var(--shadow-1);
  transition:transform var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease);
}
.field-card:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--shadow-2);}
.field-ico{
  width:38px;height:38px;border-radius:10px;background:var(--brand-50);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.field-name{font-size:16px;font-weight:600;color:var(--ink-800);margin-bottom:6px;}
.field-desc{font-size:13.5px;line-height:1.7;color:var(--ink-400);}

/* ---------- 分类主体两栏 ---------- */
.cat2-layout{
  display:grid;grid-template-columns:minmax(0,3fr) minmax(0,9fr);
  gap:64px;padding:96px 0 0;
}
.anchor-panel{position:sticky;top:104px;align-self:start;padding-right:8px;}
.panel-title{
  font-size:13px;font-weight:600;color:var(--ink-400);letter-spacing:.08em;
  padding-bottom:14px;margin-bottom:8px;border-bottom:1px solid var(--line);
}
.anchor-link{
  display:block;padding:11px 0 11px 16px;border-left:2px solid var(--line);
  font-size:14.5px;color:var(--ink-400);
  transition:color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease);
}
.anchor-link:hover{color:var(--ink-800);border-left-color:var(--star-200);}
.anchor-link.is-current{color:var(--ink-950);font-weight:600;border-left-color:var(--brand);}
.panel-note{
  margin-top:26px;padding:18px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--paper-2);font-size:13.5px;line-height:1.75;color:var(--ink-400);
}
.panel-note strong{display:block;color:var(--ink-800);font-size:14px;margin-bottom:6px;font-weight:600;}

/* ---------- 长文分节 ---------- */
.doc-section{padding-bottom:64px;scroll-margin-top:104px;}
.doc-section+.doc-section{border-top:1px solid var(--line);padding-top:56px;}
.doc-section h2{font-size:clamp(1.5rem,2.4vw,1.95rem);line-height:1.3;margin-bottom:20px;}
.doc-section p{max-width:72ch;font-size:16.5px;color:var(--ink-600);}
.doc-section .num-strip{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 22px;}
.doc-section .num-strip em{
  font-style:normal;font-family:var(--font-num);font-size:12.5px;letter-spacing:.08em;
  color:var(--star-200);border:1px solid var(--line);background:var(--paper-2);
  border-radius:6px;padding:4px 10px;
}

/* 折叠面板 */
.acc-list{margin-top:28px;border-top:1px solid var(--line);}
.acc-item{border-bottom:1px solid var(--line);}
.acc-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:18px 0;font-size:17px;font-weight:600;color:var(--ink-800);
  transition:color var(--dur-fast) var(--ease);
}
.acc-item summary::-webkit-details-marker{display:none;}
.acc-item summary:hover{color:var(--brand-600);}
.acc-icon{
  flex:none;width:20px;height:20px;margin-top:4px;color:var(--ink-400);
  font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;
  transition:transform var(--dur-base) var(--ease),color var(--dur-base) var(--ease);
}
.acc-item[open] .acc-icon{transform:rotate(45deg);color:var(--brand);}
.acc-body{padding:0 40px 20px 0;font-size:15.5px;line-height:1.9;color:var(--ink-400);max-width:68ch;}

/* 场景图 */
.scene-figure{margin:0 0 72px;scroll-margin-top:104px;}
.scene-figure .frame{
  aspect-ratio:4/3;border-radius:var(--radius-img);overflow:hidden;
  background:var(--paper-2);border:1px solid var(--line);
}
.scene-figure img{width:100%;height:100%;object-fit:cover;}
.scene-figure figcaption{margin-top:12px;font-size:13px;color:var(--ink-400);letter-spacing:.04em;}

/* 时间轴 */
.timeline-block{border-top:1px solid var(--line);padding-top:56px;scroll-margin-top:104px;}
.timeline-block h2{font-size:clamp(1.5rem,2.4vw,1.95rem);margin-bottom:12px;}
.timeline-block .tl-lead{max-width:64ch;color:var(--ink-400);font-size:15.5px;margin-bottom:36px;}
.timeline{position:relative;padding-left:32px;}
.timeline::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;border-left:1px dashed var(--line);}
.timeline-item{position:relative;padding-bottom:26px;}
.timeline-item::before{
  content:"";position:absolute;left:-32px;top:18px;width:14px;height:14px;border-radius:50%;
  background:var(--paper-2);border:2px solid var(--brand);box-sizing:border-box;
}
.tl-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 26px;box-shadow:var(--shadow-1);
  transition:transform var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(18,165,148,.35);box-shadow:var(--shadow-2);}
.tl-time{font-family:var(--font-num);font-size:13px;color:var(--ink-400);letter-spacing:.06em;font-variant-numeric:tabular-nums;}
.tl-title{font-size:17px;font-weight:600;color:var(--ink-800);margin:8px 0 8px;}
.tl-summary{font-size:14.5px;line-height:1.8;color:var(--ink-400);margin-bottom:12px;}
.tl-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.tl-link svg{transition:transform var(--dur-base) var(--ease);}
.tl-link:hover svg{transform:translateX(2px);}

/* ---------- 精简 CTA ---------- */
.cta-compact{
  position:relative;margin-top:104px;background:var(--ink-950);color:var(--paper);
  padding:64px 0;overflow:hidden;
}
.cta-compact::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(155,220,207,.06) 1px, transparent 1px);
  background-size:22px 22px;pointer-events:none;
}
.cta-inner{position:relative;text-align:center;max-width:720px;margin:0 auto;}
.cta-inner h2{color:#fff;font-size:clamp(1.55rem,2.6vw,2.1rem);margin-bottom:14px;}
.cta-inner p{color:rgba(246,245,242,.72);font-size:16px;margin-bottom:28px;}
.cta-inner .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-950);color:var(--paper);}
.footer-top{padding:96px 0 64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}
.footer-brand .brand{color:#fff;margin-bottom:18px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(246,245,242,.66);max-width:34ch;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14.5px;color:rgba(246,245,242,.66);}
.footer-col a:hover{color:var(--star-200);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:24px 0 32px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(246,245,242,.5);letter-spacing:.04em;
}

/* ---------- 动效 ---------- */
html.js .reveal{opacity:0;transform:translateY(12px);transition:opacity var(--dur-slow) var(--ease),transform var(--dur-slow) var(--ease);}
html.js .reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .search-box input{width:138px;}
  .nav-wrap{gap:22px;}
  .nav-links{gap:22px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-wrap{gap:14px;}
  .nav-links{
    position:fixed;top:72px;left:0;right:0;z-index:75;
    display:flex;flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:var(--paper-2);border-bottom:1px solid var(--line);
    padding:6px 24px 24px;max-height:calc(100vh - 72px);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
    transition:opacity var(--dur-base) var(--ease),transform var(--dur-base) var(--ease),visibility var(--dur-base);
  }
  .site-header.nav-open .nav-links{opacity:1;visibility:visible;transform:none;pointer-events:auto;}
  .nav-link{height:52px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-size:16px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--brand);}
  .search-box,.nav-right>.btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .drawer-cta{display:inline-flex;width:100%;margin-top:20px;}
  .page-head{padding-top:56px;}
  .head-meta .meta-cell{flex:1 1 45%;padding-right:16px;}
  .head-meta .meta-cell:nth-child(odd){border-left:0;padding-left:0;}
  .head-meta .meta-cell:nth-child(even){padding-left:16px;border-left:1px solid var(--line);}
  .cat2-layout{grid-template-columns:1fr;gap:40px;padding-top:64px;}
  .anchor-panel{position:static;padding-right:0;border-bottom:1px solid var(--line);padding-bottom:12px;}
  .anchor-nav{display:flex;gap:6px;overflow-x:auto;padding-bottom:6px;}
  .anchor-link{
    border-left:0;border-bottom:2px solid var(--line);padding:8px 12px;white-space:nowrap;font-size:14px;
  }
  .anchor-link.is-current{border-left:0;border-bottom-color:var(--brand);}
  .panel-note{display:none;}
  .scene-figure{margin-bottom:56px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;}
  .footer-top{padding:72px 0 48px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:23px;height:23px;}
  .page-head{padding-top:40px;}
  .page-head h1{font-size:clamp(1.85rem,7vw,2.3rem);}
  .page-head .lead{font-size:16px;}
  .head-meta .meta-cell{flex:1 1 100%;border-left:0 !important;padding:16px 0;}
  .head-meta .meta-cell+.meta-cell{border-top:1px solid var(--line);}
  .field-strip-wrap{padding-top:48px;}
  .field-card{flex:0 0 200px;padding:20px;}
  .cat2-layout{padding-top:48px;}
  .doc-section{padding-bottom:48px;}
  .doc-section+.doc-section{padding-top:40px;}
  .acc-item summary{font-size:16px;}
  .acc-body{padding-right:0;}
  .tl-card{padding:18px 18px;}
  .cta-compact{padding:52px 0;margin-top:72px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html.js .reveal{opacity:1;transform:none;}
}