/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#14635C;
  --c-primary-deep:#0B3F3B;
  --c-primary-soft:#E3EFEC;
  --c-accent:#E07A3C;
  --c-accent-soft:#FBEADD;
  --c-bg:#F6F3ED;
  --c-surface:#FFFFFF;
  --c-surface-alt:#EDE8DF;
  --c-text:#1A2421;
  --c-text-muted:#5D6B67;
  --c-line:#DAD3C7;
  --c-success:#2E7D5B;
  --c-warn:#C9861A;
  --c-danger:#B6453B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,33,.06),0 8px 24px -14px rgba(20,35,33,.18);
  --sh-2:0 2px 4px rgba(20,35,33,.08),0 18px 40px -18px rgba(20,35,33,.26);
  --font-serif:"Noto Serif SC","Source Han Serif SC",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --w-container:1200px;
  --t:180ms ease;
}
/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(900px 420px at 88% -6%,rgba(20,99,92,.06),transparent 62%),
    radial-gradient(700px 380px at 4% 8%,rgba(224,122,60,.05),transparent 66%);
  z-index:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;line-height:1.3;margin:0;color:var(--c-text);letter-spacing:.2px;}
h1{font-size:clamp(28px,4vw,44px);}
h2{font-size:clamp(22px,2.4vw,30px);}
h3{font-size:20px;}
h4{font-size:17px;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-accent-soft);color:var(--c-primary-deep);}
/* ============ 容器与通用 ============ */
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.section{padding:80px 0;}
.section--alt{background:linear-gradient(180deg,rgba(237,232,223,.55),rgba(246,243,237,0));}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .rule{display:block;width:44px;height:3px;background:var(--c-accent);border-radius:2px;margin-bottom:18px;}
.section-head p{color:var(--c-text-muted);font-size:15px;margin:12px 0 0;max-width:660px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:500;letter-spacing:1.6px;
  color:var(--c-primary);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--c-primary);opacity:.6;}
.muted{color:var(--c-text-muted);}
.link-more{display:inline-flex;align-items:center;gap:8px;font-weight:500;color:var(--c-primary);}
.link-more svg{width:16px;height:16px;transition:transform var(--t);}
.link-more:hover{color:var(--c-accent);}
.link-more:hover svg{transform:translateX(4px);}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:500;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{color:#fff;filter:brightness(.92);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary);transform:translateY(-2px);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--c-accent);color:#fff;filter:brightness(.94);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.icon-btn{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);border:1px solid var(--c-line);background:var(--c-surface);
  transition:background var(--t),border-color var(--t),color var(--t),transform var(--t);
}
.icon-btn svg{width:17px;height:17px;}
.icon-btn:hover{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);}
.icon-btn:active{transform:translateY(0);}
.icon-btn--light{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.35);color:#fff;}
.icon-btn--light:hover{background:rgba(255,255,255,.2);border-color:#fff;color:#fff;}
/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,243,237,.86);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid transparent;
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-stuck{background:var(--c-surface);border-bottom-color:var(--c-line);box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-primary-deep);flex:0 0 auto;}
.brand:hover{color:var(--c-primary-deep);}
.brand-mark{width:24px;height:24px;flex:0 0 24px;display:block;}
.brand-mark svg{width:24px;height:24px;display:block;}
.brand-text{font-family:var(--font-serif);font-weight:600;font-size:17px;letter-spacing:.4px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;color:var(--c-text);border-radius:0;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link.is-active{color:var(--c-primary);font-weight:500;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.hamburger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);background:var(--c-surface);align-items:center;justify-content:center;flex-direction:column;gap:4px;}
.hamburger span{display:block;width:17px;height:1.6px;background:var(--c-primary-deep);border-radius:2px;transition:transform var(--t),opacity var(--t);}
.hamburger.is-open span:nth-child(1){transform:translateY(5.6px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg);}
.nav-drawer{
  display:none;position:fixed;inset:68px 0 0 0;background:var(--c-surface);z-index:55;
  padding:24px;overflow-y:auto;border-top:1px solid var(--c-line);
}
.nav-drawer.is-open{display:block;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;border-bottom:1px solid var(--c-line);
  font-family:var(--font-serif);font-size:18px;color:var(--c-text);
}
.drawer-link.is-active{color:var(--c-primary);}
.drawer-cta{margin-top:24px;display:grid;gap:12px;}
/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:72px 0 64px;border-bottom:1px solid var(--c-line);}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.16;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(246,243,237,.92) 0%,rgba(246,243,237,.76) 48%,rgba(227,239,236,.7) 100%);
}
.hero-inner{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;position:relative;z-index:1;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 0;}
.stamp{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:4px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12.5px;font-weight:500;letter-spacing:.6px;border:1px solid rgba(20,99,92,.16);
}
.hero h1{margin:18px 0 0;}
.hero-sub{font-size:17px;color:var(--c-text-muted);margin:16px 0 0;max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  margin-top:40px;border-top:1px solid var(--c-line);
}
.hero-stat{padding:18px 18px 0 0;border-right:1px dashed var(--c-line);}
.hero-stat:last-child{border-right:0;}
.hero-stat dt{font-size:12.5px;letter-spacing:1px;color:var(--c-text-muted);margin-bottom:6px;}
.hero-stat dd{margin:0;font-family:var(--font-serif);font-size:15px;color:var(--c-primary-deep);line-height:1.5;}
.hero-media{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-surface-alt);
  box-shadow:var(--sh-2);aspect-ratio:16/10;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media .media-note{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(255,255,255,.9);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:10px 14px;font-size:13px;color:var(--c-text);backdrop-filter:blur(3px);
}
/* ============ 专题合集目录 ============ */
.topic-index{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.toc{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:12px;box-shadow:var(--sh-1);}
.toc-item{
  display:flex;align-items:center;gap:14px;
  padding:16px 14px;border-radius:var(--r-md);
  color:var(--c-text);border-bottom:1px solid rgba(218,211,199,.6);
  transition:background var(--t),transform var(--t);
}
.toc li:last-child .toc-item{border-bottom:0;}
.toc-item:hover{background:var(--c-surface-alt);color:var(--c-primary-deep);transform:translateX(2px);}
.toc-num{font-family:var(--font-serif);font-size:14px;color:var(--c-accent);width:26px;flex:0 0 26px;}
.toc-title{font-family:var(--font-serif);font-size:16px;flex:1 1 auto;}
.toc-desc{font-size:13px;color:var(--c-text-muted);display:block;margin-top:2px;font-family:var(--font-sans);}
.count-badge{
  flex:0 0 auto;min-width:28px;height:22px;padding:0 8px;border-radius:var(--r-pill);
  background:var(--c-accent);color:#fff;font-size:12px;line-height:22px;text-align:center;font-family:var(--font-sans);
}
.preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.preview-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;color:var(--c-text);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.preview-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,122,60,.5);color:var(--c-text);}
.preview-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--c-surface-alt);}
.preview-card .pc-body{padding:18px 20px 22px;}
.preview-card h3{font-size:17px;margin-bottom:8px;}
.preview-card p{font-size:13.5px;color:var(--c-text-muted);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
/* ============ 精选条目 ============ */
.featured-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.featured-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,122,60,.5);}
.card-media{position:relative;background:var(--c-surface-alt);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card--lg .card-media{aspect-ratio:16/9;}
.card--lg .card-body{padding:24px 26px 26px;}
.card--lg h3{font-size:23px;margin:12px 0 10px;}
.card--lg h3 a{color:var(--c-text);}
.card--lg h3 a:hover{color:var(--c-primary);}
.card--sm{flex-direction:row;}
.card--sm .card-media{flex:0 0 38%;min-height:100%;}
.card--sm .card-media img{height:100%;}
.card--sm .card-body{padding:18px 20px;}
.card--sm h3{font-size:17px;margin:10px 0 8px;line-height:1.45;}
.card--sm h3 a{color:var(--c-text);}
.card--sm h3 a:hover{color:var(--c-primary);}
.card-body p{font-size:14px;color:var(--c-text-muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:12.5px;color:var(--c-text-muted);}
.dot-sep{width:3px;height:3px;border-radius:50%;background:var(--c-line);display:inline-block;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:4px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:12.5px;font-weight:500;
}
.tag--accent{background:var(--c-accent-soft);color:#A8511B;}
.fav-btn{margin-left:auto;width:30px;height:30px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;color:var(--c-text-muted);}
.fav-btn svg{width:16px;height:16px;}
.fav-btn:hover{background:var(--c-accent-soft);color:var(--c-accent);}
.fav-btn.is-on{color:var(--c-accent);}
/* ============ 最新信息 CMS 板块 ============ */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-text-muted);
  font-size:13.5px;transition:all var(--t);
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.news-list{display:grid;gap:16px;}
.news-card{
  display:grid;grid-template-columns:240px 1fr;gap:24px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:16px;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,122,60,.5);}
.news-thumb{display:block;border-radius:var(--r-md);overflow:hidden;background:var(--c-surface-alt);aspect-ratio:240/150;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body h3{font-size:18px;margin:8px 0 8px;line-height:1.45;}
.news-body h3 a{color:var(--c-text);}
.news-body h3 a:hover{color:var(--c-primary);}
.news-body p{font-size:14px;color:var(--c-text-muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px;font-size:12.5px;color:var(--c-text-muted);}
.list-foot{margin-top:32px;display:flex;justify-content:center;}
.empty-state{
  text-align:center;padding:56px 24px;background:var(--c-surface);
  border:1px dashed var(--c-line);border-radius:var(--r-lg);
}
.empty-state svg{width:64px;height:64px;color:var(--c-primary);opacity:.35;margin:0 auto 14px;}
.empty-state h3{font-size:16px;margin-bottom:8px;}
.empty-state p{font-size:14px;color:var(--c-text-muted);margin:0 0 18px;}
/* ============ 相关推荐 横向滚动 ============ */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.rail-nav{display:flex;gap:10px;}
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 48px)/3);
  gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:8px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:3px;}
.rail > *{scroll-snap-align:start;}
.rail-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rail-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,122,60,.5);}
.rail-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-surface-alt);}
.rail-card .rc-body{padding:18px 20px 22px;}
.rail-card h3{font-size:17px;margin:10px 0 8px;line-height:1.45;}
.rail-card h3 a{color:var(--c-text);}
.rail-card h3 a:hover{color:var(--c-primary);}
.rail-card p{font-size:13.5px;color:var(--c-text-muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
/* ============ FAQ ============ */
.faq{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.faq details{border-bottom:1px solid var(--c-line);border-left:4px solid transparent;transition:border-color var(--t),background var(--t);}
.faq details:last-child{border-bottom:0;}
.faq details[open]{border-left-color:var(--c-primary);background:rgba(227,239,236,.28);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:22px 24px;font-family:var(--font-serif);font-size:17px;color:var(--c-text);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--c-primary);}
.faq-icon{
  margin-left:auto;flex:0 0 30px;width:30px;height:30px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);
  transition:transform 240ms ease,background var(--t);
}
.faq-icon svg{width:15px;height:15px;}
.faq details[open] .faq-icon{transform:rotate(180deg);background:var(--c-accent-soft);color:var(--c-accent);}
.faq-answer{padding:0 24px 24px 24px;font-size:14.5px;color:var(--c-text-muted);max-width:820px;}
.faq-answer p{margin:0;}
/* ============ CTA 深条 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--c-primary-deep);color:#fff;
  padding:64px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.14;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:
    repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 90px),
    radial-gradient(620px 300px at 12% 10%,rgba(224,122,60,.22),transparent 68%);
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;max-width:560px;}
.cta-inner p{color:rgba(255,255,255,.78);margin:12px 0 0;font-size:15px;max-width:560px;}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-deep);color:rgba(255,255,255,.78);border-top:3px solid var(--c-accent);padding:64px 0 0;position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand{color:#fff;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.7);margin:16px 0 0;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.6px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.62);
}
/* ============ 移动端底部 Tab ============ */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:var(--c-surface);border-top:1px solid var(--c-line);
  padding:6px 8px calc(6px + env(safe-area-inset-bottom,0px));
}
.tabbar-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;}
.tab-item{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:7px 0 6px;color:var(--c-text-muted);font-size:10.5px;position:relative;border-radius:10px;
}
.tab-item svg{width:22px;height:22px;}
.tab-item::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
  width:26px;height:2px;border-radius:2px;background:var(--c-accent);transition:transform var(--t);
}
.tab-item.is-active{color:var(--c-primary);}
.tab-item.is-active::before{transform:translateX(-50%) scaleX(1);}
/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-media{aspect-ratio:16/9;}
  .topic-index{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .header-actions .btn{display:none;}
  .hamburger{display:inline-flex;}
  .tabbar{display:block;}
  body{padding-bottom:68px;}
  .featured-grid{grid-template-columns:1fr;}
  .featured-side{grid-template-rows:auto auto;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hero-stat:nth-child(2){border-right:0;}
  .hero-stat{border-bottom:1px dashed var(--c-line);padding-bottom:16px;}
  .hero-stat:nth-child(3),.hero-stat:nth-child(4){border-bottom:0;}
  .rail{grid-auto-columns:calc((100% - 24px)/2);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .hero{padding:44px 0 40px;}
  .hero-sub{font-size:16px;}
  .hero-cta .btn{flex:1 1 auto;}
  .preview-grid{grid-template-columns:1fr;}
  .news-card{grid-template-columns:1fr;gap:14px;padding:14px;}
  .news-thumb{aspect-ratio:16/9;}
  .card--sm{flex-direction:column;}
  .card--sm .card-media{flex:none;aspect-ratio:16/9;}
  .rail{grid-auto-columns:82%;}
  .rail-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .faq summary{padding:18px 16px;font-size:16px;}
  .faq-answer{padding:0 16px 20px;}
  .cta-band{padding:48px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{margin-top:36px;}
}
@media (max-width:519px){
  .brand-text{font-size:15.5px;}
  .hero-stats{grid-template-columns:1fr;}
  .hero-stat{border-right:0;padding-right:0;}
  .hero-stat:nth-child(3){border-bottom:1px dashed var(--c-line);}
  .hero-stat:last-child{padding-bottom:0;}
  .toc-item{padding:14px 12px;gap:10px;}
  .toc-title{font-size:15px;}
  .card--lg .card-body{padding:20px;}
  .card--lg h3{font-size:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#14635C;
  --c-primary-deep:#0B3F3B;
  --c-primary-soft:#E3EFEC;
  --c-accent:#E07A3C;
  --c-accent-soft:#FBEADD;
  --c-bg:#F6F3ED;
  --c-surface:#FFFFFF;
  --c-surface-alt:#EDE8DF;
  --c-text:#1A2421;
  --c-text-muted:#5D6B67;
  --c-line:#DAD3C7;
  --c-success:#2E7D5B;
  --c-warn:#C9861A;
  --c-danger:#B6453B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,33,.06),0 8px 24px -14px rgba(20,35,33,.18);
  --sh-2:0 2px 4px rgba(20,35,33,.08),0 18px 40px -18px rgba(20,35,33,.26);
  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --gap:24px;
  --header-h:68px;
}

/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  padding-bottom:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,border-color .18s ease}
a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
h1,h2,h3,h4{font-family:var(--font-title);line-height:1.3;color:var(--c-text);margin:0 0 16px}
h1{font-size:clamp(28px,4vw,44px);font-weight:600}
h2{font-size:clamp(22px,2.4vw,30px);font-weight:600}
h3{font-size:20px;font-weight:600}
h4{font-size:17px;font-weight:600}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:20px}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-md) 0;
}
.skip-link:focus{left:0}

/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.reading{max-width:760px}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(246,243,237,.86);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid transparent;
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  background:var(--c-surface);
  box-shadow:var(--sh-1);
  border-bottom-color:var(--c-line);
}
.header-inner{
  height:var(--header-h);
  display:flex;align-items:center;gap:24px;justify-content:space-between;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-text);text-decoration:none}
.brand:hover{color:var(--c-text);text-decoration:none}
.brand-mark{
  width:26px;height:26px;flex:0 0 26px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);
}
.brand-mark svg{width:24px;height:24px}
.brand-text{font-family:var(--font-title);font-weight:600;font-size:18px;letter-spacing:.5px}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;color:var(--c-text-muted);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);text-decoration:none}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-accent);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;text-decoration:none;
}
.btn:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:#12574f;color:#fff}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#cf6b31;color:#fff}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;
  background:none;border:0;padding:0;cursor:pointer;font-size:15px;
}
.btn-text svg{transition:transform .18s ease}
.btn-text:hover{color:var(--c-accent);text-decoration:none}
.btn-text:hover svg{transform:translateX(4px)}
.icon-btn{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-text-muted);cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.icon-btn:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary-soft)}
.icon-btn.is-on{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary)}

/* 汉堡 */
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:var(--c-surface);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:1.6px;background:var(--c-text);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* 抽屉 */
.drawer{
  position:fixed;inset:var(--header-h) 0 0 0;z-index:99;
  background:var(--c-bg);padding:24px 18px 96px;overflow-y:auto;
  display:flex;flex-direction:column;gap:10px;
}
.drawer[hidden]{display:none}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 18px;border-radius:var(--r-md);background:var(--c-surface);
  border:1px solid var(--c-line);color:var(--c-text);font-size:16px;
}
.drawer a.drawer-link:hover{border-color:var(--c-accent);color:var(--c-primary);text-decoration:none}
.drawer a.drawer-link.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}

/* 底部 Tab */
.bottom-tabs{
  position:fixed;left:0;right:0;bottom:0;z-index:98;
  display:none;grid-template-columns:repeat(3,1fr);
  background:var(--c-surface);border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 24px -18px rgba(20,35,33,.4);
}
.bottom-tabs .tab{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:9px 4px 10px;font-size:10px;color:var(--c-text-muted);text-decoration:none;
}
.bottom-tabs .tab:hover{text-decoration:none;color:var(--c-primary)}
.bottom-tabs .tab svg{width:22px;height:22px}
.bottom-tabs .tab.is-active{color:var(--c-primary)}
.bottom-tabs .tab.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--c-accent);border-radius:2px;
}

/* ============ 文章 hero ============ */
.article-hero{
  position:relative;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,243,237,.94),rgba(246,243,237,.99));
}
.article-hero .container{position:relative;z-index:1;padding-top:28px;padding-bottom:44px}
.breadcrumb{margin-bottom:22px}
.breadcrumb ol{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;margin:0;padding:0;font-size:13.5px;color:var(--c-text-muted);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--c-line)}
.breadcrumb a{color:var(--c-text-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb [aria-current="page"]{
  color:var(--c-text-muted);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-title{max-width:900px;margin-bottom:18px}
.article-lead{max-width:760px;color:var(--c-text-muted);font-size:16px;margin-bottom:22px}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  font-size:13.5px;color:var(--c-text-muted);
}
.article-meta .dot{color:var(--c-line)}
.meta-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12.5px;font-weight:500;line-height:1.7;
}
.chip-accent{background:var(--c-accent-soft);color:#A9541E}
.seal{
  display:inline-flex;align-items:center;justify-content:center;
  padding:5px 10px;border-radius:4px;background:var(--c-primary);color:#fff;
  font-size:12.5px;font-weight:500;letter-spacing:1px;
}

/* ============ 正文布局 ============ */
.article-main{padding:48px 0 72px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 260px;
  gap:56px;justify-content:center;align-items:start;
}
.article-body{font-size:16px;line-height:1.85}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em;color:#243230}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.2vw,26px);
  margin:44px 0 18px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;
  background:var(--c-primary);border-radius:2px;
}
.article-body h3{font-size:18.5px;margin:32px 0 14px}
.article-body h4{font-size:16.5px;margin:24px 0 12px;color:var(--c-primary-deep)}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(20,99,92,.35)}
.article-body a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);text-decoration:none}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body li{margin-bottom:8px}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  background:var(--c-surface-alt);
  border-left:3px solid var(--c-accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#33413E;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:20px 0 8px;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:12.5px;color:var(--c-text-muted);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px;
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-body th{background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(237,232,223,.5)}
.article-body code{
  font-family:var(--font-num);font-size:13.5px;
  background:var(--c-surface-alt);padding:2px 6px;border-radius:4px;
}
.article-body pre{
  background:var(--c-primary-deep);color:#E8F2EF;padding:18px;
  border-radius:var(--r-md);overflow-x:auto;font-family:var(--font-num);font-size:13.5px;
}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:36px 0}

/* 空态 */
.empty-state{
  text-align:center;padding:56px 24px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
}
.empty-state svg{width:64px;height:64px;color:var(--c-line);margin:0 auto 16px}
.empty-state h2{font-size:18px;margin-bottom:8px}
.empty-state p{color:var(--c-text-muted);font-size:14px;margin-bottom:20px}

/* TOC */
.toc{
  position:sticky;top:96px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-1);
}
.toc h3{
  font-size:14px;letter-spacing:1px;color:var(--c-text-muted);
  margin:0 0 12px;padding-bottom:10px;border-bottom:1px solid var(--c-line);
  display:flex;align-items:center;gap:8px;
}
.toc h3::before{content:"";width:3px;height:14px;background:var(--c-accent);border-radius:2px}
.toc ol{list-style:none;margin:0;padding:0;font-size:14px}
.toc li{margin-bottom:4px}
.toc a{
  display:block;padding:7px 10px;border-radius:var(--r-sm);
  color:var(--c-text-muted);border-left:2px solid transparent;
}
.toc a:hover{background:var(--c-surface-alt);color:var(--c-primary);text-decoration:none}
.toc a.is-current{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);background:var(--c-primary-soft)}
.toc-empty{font-size:13px;color:var(--c-text-muted)}

/* 移动端目录折叠 */
.toc-mobile{display:none;margin-bottom:24px}
.toc-mobile button{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-text);font-size:14.5px;font-weight:600;cursor:pointer;
}
.toc-mobile ol{
  list-style:none;margin:8px 0 0;padding:14px 16px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);font-size:14px;
}
.toc-mobile ol[hidden]{display:none}

/* ============ 板块通用 ============ */
.section{padding:56px 0}
.section-head{margin-bottom:28px}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:2px;color:var(--c-accent);
  font-weight:600;margin-bottom:8px;
}
.section-head h2{margin-bottom:8px}
.section-head p{color:var(--c-text-muted);max-width:720px;margin:0}
.hairline{height:1px;background:var(--c-line);border:0;margin:0}

/* 标签组 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .label{font-size:13px;color:var(--c-text-muted);margin-right:2px}
.tag{
  display:inline-block;padding:5px 12px;border-radius:4px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:12.5px;
}
.tag:hover{background:var(--c-accent-soft);color:#A9541E;text-decoration:none}

/* 卡片 */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:20px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  height:100%;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,122,60,.4)}
.card .thumb{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md);
  background:var(--c-surface-alt);margin-bottom:16px;
}
.card h3{font-size:17px;margin-bottom:8px}
.card h3 a{color:var(--c-text)}
.card h3 a:hover{color:var(--c-primary);text-decoration:none}
.card p{font-size:14px;color:var(--c-text-muted);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--c-text-muted);gap:10px}

/* 双栏导航 */
.duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.duo-item{
  display:block;padding:22px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-lg);color:var(--c-text);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.duo-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,122,60,.4);text-decoration:none;color:var(--c-text)}
.duo-item .kicker{font-size:12.5px;color:var(--c-accent);letter-spacing:1px;display:block;margin-bottom:8px}
.duo-item strong{font-family:var(--font-title);font-size:17px;display:block;margin-bottom:6px}
.duo-item span.desc{font-size:13.5px;color:var(--c-text-muted);display:block}

/* CTA 深条 */
.cta-bar{
  position:relative;overflow:hidden;
  background:var(--c-primary-deep);color:#fff;border-radius:var(--r-xl);
  padding:36px 34px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-bar::after{
  content:"";position:absolute;right:-40px;top:-40px;width:320px;height:320px;
  background:url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  opacity:.08;pointer-events:none;
}
.cta-bar h2{color:#fff;font-size:22px;margin-bottom:6px;position:relative;z-index:1}
.cta-bar p{color:rgba(255,255,255,.78);margin:0;font-size:14px;position:relative;z-index:1;max-width:620px}
.cta-actions{display:flex;align-items:center;gap:12px;position:relative;z-index:1;flex-wrap:wrap}

/* 页脚 */
.site-footer{
  background:var(--c-primary-deep);color:rgba(255,255,255,.8);
  border-top:3px solid var(--c-accent);margin-top:24px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;padding:56px 0 36px;
}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand .brand-mark{color:#fff}
.footer-brand p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.7);margin:0;max-width:320px}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:1px;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.75);font-size:13.5px}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:18px 0 26px;border-top:1px solid rgba(255,255,255,.14);
  font-size:12.5px;color:rgba(255,255,255,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,760px) 240px;gap:40px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .hamburger{display:flex}
  .header-actions .btn-sm{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .toc{display:none}
  .toc-mobile{display:block}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 28px}
  body{padding-bottom:68px}
  .bottom-tabs{display:grid}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .article-header{padding-bottom:36px}
  .article-main{padding:36px 0 56px}
  .breadcrumb [aria-current="page"]{max-width:220px}
  .cta-bar{padding:28px 22px;border-radius:var(--r-lg)}
  .duo{grid-template-columns:minmax(0,1fr)}
  .grid-3{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:575px){
  .container{padding:0 18px}
  .article-meta .meta-actions{margin-left:0;width:100%}
  .btn{height:48px}
  .btn-sm{height:40px}
}

/* roulang page: category1 */
:root{
  --c-primary:#14635C;
  --c-primary-deep:#0B3F3B;
  --c-primary-soft:#E3EFEC;
  --c-accent:#E07A3C;
  --c-accent-soft:#FBEADD;
  --c-bg:#F6F3ED;
  --c-surface:#FFFFFF;
  --c-surface-alt:#EDE8DF;
  --c-text:#1A2421;
  --c-text-muted:#5D6B67;
  --c-line:#DAD3C7;
  --c-success:#2E7D5B;
  --c-warn:#C9861A;
  --c-danger:#B6453B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,33,.06),0 8px 24px -14px rgba(20,35,33,.18);
  --sh-2:0 2px 4px rgba(20,35,33,.08),0 18px 40px -18px rgba(20,35,33,.26);
  --font-title:"Noto Serif SC","Source Han Serif SC",Georgia,serif;
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-h:68px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
button{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{font-family:var(--font-title);font-weight:600;line-height:1.3;margin:0;letter-spacing:.005em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.container-narrow{max-width:760px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,243,237,.88);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck{
  background:var(--c-surface);
  box-shadow:var(--sh-1);
  border-bottom-color:var(--c-line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:var(--header-h);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-text);
  font-family:var(--font-title);
  font-size:19px;
  font-weight:600;
  text-decoration:none;
  white-space:nowrap;
}
.brand:hover{color:var(--c-primary);text-decoration:none;}
.brand-mark{
  width:24px;height:24px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);
  flex:0 0 auto;
}
.brand-mark svg{width:24px;height:24px;}
.brand-text{line-height:1.2;}

.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
  flex:1 1 auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--c-text-muted);
  border-radius:var(--r-sm);
  text-decoration:none;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);text-decoration:none;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:-2px;
  height:2px;border-radius:2px;
  background:var(--c-accent);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:1.5px solid transparent;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:500;
  line-height:1;
  cursor:pointer;
  text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary);filter:brightness(.92);transform:translateY(-2px);box-shadow:var(--sh-2);color:#fff;}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary);transform:translateY(-2px);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{filter:brightness(.94);transform:translateY(-2px);box-shadow:var(--sh-2);color:#fff;}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.65);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:500;background:none;border:0;padding:4px 0;cursor:pointer;
}
.btn-text .arrow{transition:transform .18s ease;}
.btn-text:hover .arrow{transform:translateX(4px);}
.icon-btn{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid transparent;border-radius:10px;
  background:transparent;color:var(--c-text-muted);cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.icon-btn:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.icon-btn svg{width:18px;height:18px;}

.nav-toggle{display:none;}

/* 移动抽屉 */
.mobile-drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
  padding:14px 0 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .container{display:flex;flex-direction:column;gap:6px;}
.mobile-drawer a{
  padding:12px 14px;
  border-radius:var(--r-md);
  color:var(--c-text);
  font-size:16px;
  text-decoration:none;
}
.mobile-drawer a.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.mobile-drawer .btn{margin-top:8px;}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--c-line);
  background:var(--c-bg);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,243,237,.72),rgba(246,243,237,.94));
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:72px 24px 64px;
  max-width:1200px;
  margin:0 auto;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:20px;
  font-weight:500;
}
.eyebrow::before{content:"";width:14px;height:3px;border-radius:2px;background:var(--c-accent);display:inline-block;}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);
  margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-lead{
  font-size:17px;
  color:var(--c-text-muted);
  max-width:46ch;
  margin-bottom:22px;
  line-height:1.8;
}
.stamp-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.stamp{
  display:inline-flex;align-items:center;
  height:28px;padding:0 12px;
  font-size:12.5px;font-weight:500;
  color:var(--c-primary);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:4px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

.hero-figure{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-surface-alt);
  box-shadow:var(--sh-2);
  aspect-ratio:16/10;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;
  background:linear-gradient(180deg,rgba(11,63,59,0),rgba(11,63,59,.82));
  color:#fff;font-size:13px;
}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section-alt{background:var(--c-surface-alt);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-title{font-size:clamp(22px,2.4vw,30px);position:relative;padding-top:16px;margin-bottom:12px;}
.section-title::before{
  content:"";position:absolute;top:0;left:0;
  width:44px;height:3px;border-radius:2px;background:var(--c-accent);
}
.section-sub{color:var(--c-text-muted);font-size:15.5px;max-width:62ch;}

/* 编号目录条 */
.catalog-strip{
  display:flex;gap:10px;overflow-x:auto;padding-bottom:12px;margin-bottom:28px;
  scrollbar-width:thin;
}
.catalog-strip::-webkit-scrollbar{height:6px;}
.catalog-strip::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:3px;}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  color:var(--c-text-muted);
  font-size:14px;
  text-decoration:none;
  transition:border-color .18s ease,color .18s ease,background .18s ease,transform .18s ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);text-decoration:none;transform:translateY(-1px);}
.chip .count{
  background:var(--c-accent);color:#fff;
  font-size:11.5px;line-height:1;
  padding:3px 7px;border-radius:var(--r-pill);
  font-family:var(--font-mono);
}

.num-list{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.num-item{
  display:grid;
  grid-template-columns:96px minmax(0,1fr) auto;
  gap:24px;
  align-items:center;
  padding:24px 28px;
  border-bottom:1px solid var(--c-line);
  transition:background .18s ease;
  text-decoration:none;
  color:inherit;
}
.num-item:last-child{border-bottom:0;}
.num-item:hover{background:var(--c-surface-alt);text-decoration:none;}
.num-index{
  font-family:var(--font-title);
  font-size:34px;
  line-height:1;
  color:var(--c-primary);
  opacity:.45;
  letter-spacing:.02em;
}
.num-item:hover .num-index{opacity:.9;}
.num-title{font-family:var(--font-title);font-size:19px;margin-bottom:6px;color:var(--c-text);}
.num-desc{font-size:14.5px;color:var(--c-text-muted);}
.num-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;}
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;
  font-size:12.5px;font-weight:500;
  background:var(--c-primary-soft);color:var(--c-primary);
  border-radius:4px;
}
.badge-accent{background:var(--c-accent-soft);color:#A8552A;}
.num-go{color:var(--c-primary);display:inline-flex;align-items:center;}
.num-go svg{width:20px;height:20px;transition:transform .18s ease;}
.num-item:hover .num-go svg{transform:translateX(4px);}

/* 精选：1 大 + 1 小 */
.featured-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:24px;
}
.feat-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.feat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,122,60,.4);}
.feat-media{position:relative;overflow:hidden;background:var(--c-surface-alt);}
.feat-large .feat-media{aspect-ratio:16/9;}
.feat-small .feat-media{aspect-ratio:16/10;}
.feat-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.feat-card:hover .feat-media img{transform:scale(1.03);}
.feat-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.feat-body h3{font-size:20px;}
.feat-large .feat-body h3{font-size:23px;}
.feat-body p{font-size:14.8px;color:var(--c-text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:auto;
  font-size:12.5px;color:var(--c-text-muted);
}
.meta-row .dot{opacity:.6;}

/* 信息条 / 数据卡 */
.info-band{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.info-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-left:4px solid var(--c-primary);
  border-radius:var(--r-md);
  padding:24px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.info-card h3{font-size:17px;margin-bottom:8px;}
.info-card p{font-size:14.5px;color:var(--c-text-muted);}
.stat-num{
  font-family:var(--font-mono);
  font-size:30px;
  color:var(--c-primary);
  line-height:1.2;
  margin-bottom:6px;
}
.stat-label{font-size:13px;color:var(--c-text-muted);}

/* 流程步骤 */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  counter-reset:step;
}
.step{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:28px 22px 24px;
}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--c-primary);color:#fff;
  font-family:var(--font-mono);font-size:14px;
  margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--c-text-muted);}

/* FAQ */
.faq-wrap{
  max-width:860px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-item{border-bottom:1px solid var(--c-line);transition:background .18s ease;}
.faq-item:last-child{border-bottom:0;}
.faq-item[open]{background:rgba(227,239,236,.35);border-left:4px solid var(--c-primary);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  font-family:var(--font-title);
  font-size:17px;
  cursor:pointer;
  list-style:none;
  color:var(--c-text);
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q:hover{color:var(--c-primary);}
.faq-ico{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .24s ease;
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-ico::before{width:14px;height:2px;}
.faq-ico::after{width:2px;height:14px;}
.faq-item[open] .faq-ico{transform:rotate(180deg);}
.faq-item[open] .faq-ico::after{opacity:0;}
.faq-a{padding:0 24px 22px;color:var(--c-text-muted);font-size:15px;animation:fadeIn .24s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* 相关推荐横滚 */
.related-scroller{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:4px 4px 18px;
  scroll-snap-type:x mandatory;
}
.related-scroller::-webkit-scrollbar{height:6px;}
.related-scroller::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:3px;}
.related-card{
  flex:0 0 calc((100% - 40px)/3);
  scroll-snap-align:start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,122,60,.4);}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-surface-alt);}
.related-card .rc-body{padding:18px 20px 22px;}
.related-card h3{font-size:16.5px;margin-bottom:8px;}
.related-card p{font-size:14px;color:var(--c-text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.scroller-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.scroller-nav{display:flex;gap:8px;}
.scroller-nav .icon-btn{border-color:var(--c-line);background:var(--c-surface);}

/* CTA 深条 */
.cta-band{
  position:relative;
  background:var(--c-primary-deep);
  color:#fff;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.14;
}
.cta-band::after{
  content:"";
  position:absolute;left:-40px;right:-40px;top:0;height:3px;
  background:var(--c-accent);
}
.cta-inner{
  position:relative;z-index:2;
  padding:56px 24px;
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(21px,2.2vw,27px);margin-bottom:8px;color:#fff;}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px;max-width:52ch;}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.cta-band .icon-btn{color:rgba(255,255,255,.85);border:1px solid rgba(255,255,255,.28);}
.cta-band .icon-btn:hover{background:rgba(255,255,255,.14);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-deep);
  color:rgba(255,255,255,.76);
  position:relative;
  border-top:3px solid var(--c-accent);
  font-size:14.5px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr repeat(3,1fr);
  gap:40px;
  padding:64px 0 40px;
}
.footer-brand .brand{color:#fff;margin-bottom:14px;}
.footer-brand .brand:hover{color:#fff;text-decoration:none;}
.footer-brand .brand-mark{color:#8FCFC5;}
.footer-brand p{color:rgba(255,255,255,.68);font-size:14px;max-width:34ch;}
.footer-col h4{
  color:#fff;font-size:15px;margin-bottom:16px;font-family:var(--font-body);font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14.5px;text-decoration:none;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
  font-family:var(--font-mono);
}

/* ============ 移动端底部 Tab ============ */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 18px -12px rgba(20,35,33,.4);
}
.tabbar-inner{display:flex;}
.tab-item{
  flex:1 1 0;
  position:relative;
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:8px 4px 10px;
  color:var(--c-text-muted);
  font-size:10.5px;
  text-decoration:none;
}
.tab-item:hover{text-decoration:none;color:var(--c-primary);}
.tab-item svg{width:22px;height:22px;}
.tab-item.is-active{color:var(--c-primary);font-weight:600;}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--c-accent);
}

/* 空态 / 错误态预留 */
.empty-state{
  text-align:center;
  padding:56px 24px;
  color:var(--c-text-muted);
}
.empty-state svg{width:64px;height:64px;color:var(--c-primary);opacity:.35;margin:0 auto 16px;}
.empty-state h3{font-size:16px;color:var(--c-text);margin-bottom:8px;}
.empty-state p{font-size:14px;}
.error-text{color:var(--c-danger);font-size:13px;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:52px 24px 44px;}
  .hero-figure{max-width:520px;}
  .featured-grid{grid-template-columns:1fr;}
  .info-band{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr 1fr;}
  .related-card{flex:0 0 calc((100% - 20px)/2);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .num-item{grid-template-columns:76px minmax(0,1fr) auto;gap:18px;padding:22px;}
  .num-index{font-size:28px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  body{padding-bottom:68px;}
  .tabbar{display:block;}
  .header-actions .btn{display:none;}
  .container{padding:0 18px;}
  .hero-inner{padding:44px 18px 38px;}
  .page-hero h1{font-size:26px;}
  .hero-lead{font-size:15.5px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .num-item{
    grid-template-columns:56px minmax(0,1fr);
    padding:18px 18px 20px;
    gap:14px;
    align-items:start;
  }
  .num-index{font-size:24px;}
  .num-go{display:none;}
  .num-title{font-size:17px;}
  .info-band{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .related-card{flex:0 0 78%;}
  .cta-inner{padding:40px 18px;flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .faq-q{padding:16px 18px;font-size:15.5px;}
  .faq-a{padding:0 18px 18px;}
  .btn{width:auto;}
  .hero-actions .btn{flex:1 1 auto;}
}
@media (max-width:519px){
  .brand-text{font-size:16.5px;}
  .stamp{font-size:12px;}
  .related-card{flex:0 0 86%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category2 */
:root{
  --c-primary:#14635C;
  --c-primary-deep:#0B3F3B;
  --c-primary-soft:#E3EFEC;
  --c-accent:#E07A3C;
  --c-accent-soft:#FBEADD;
  --c-bg:#F6F3ED;
  --c-surface:#FFFFFF;
  --c-surface-alt:#EDE8DF;
  --c-text:#1A2421;
  --c-text-muted:#5D6B67;
  --c-line:#DAD3C7;
  --c-success:#2E7D5B;
  --c-warn:#C9861A;
  --c-danger:#B6453B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,33,.06),0 8px 24px -14px rgba(20,35,33,.18);
  --sh-2:0 2px 4px rgba(20,35,33,.08),0 18px 40px -18px rgba(20,35,33,.26);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:var(--c-primary);text-decoration:none;border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
a:hover{color:var(--c-accent);border-bottom-color:currentColor}
h1,h2,h3,h4{font-family:var(--font-serif);line-height:1.3;margin:0;color:var(--c-text);font-weight:600}
h1{font-size:clamp(28px,4vw,44px)}
h2{font-size:clamp(22px,2.4vw,30px)}
h3{font-size:20px}
h4{font-size:17px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,243,237,.86);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  background:var(--c-surface);
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  border-bottom:0;
  color:var(--c-text);
  flex-shrink:0;
}
.brand:hover{color:var(--c-primary);border-bottom-color:transparent}
.brand-mark{
  width:24px;height:24px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);
}
.brand-mark svg{width:24px;height:24px}
.brand-text{
  font-family:var(--font-serif);
  font-size:18px;
  font-weight:600;
  letter-spacing:.02em;
  max-height:28px;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:68px;
  padding:0 14px;
  font-size:15px;
  color:var(--c-text-muted);
  border-bottom:0;
  transition:color .18s ease;
}
.nav-link:hover{color:var(--c-primary);border-bottom-color:transparent}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:0;
  height:2px;
  background:var(--c-accent);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .2s ease;
}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  align-items:center;justify-content:center;
  color:var(--c-primary);
}
.nav-toggle:hover{background:var(--c-primary-soft)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  border-bottom:1.5px solid transparent;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-primary:hover{
  background:#10544E;
  color:#fff;
  border-color:#10544E;
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.btn-accent:hover{background:#CC6A31;color:#fff;border-color:#CC6A31;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px)}
.btn-icon{
  width:38px;height:38px;padding:0;
  border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  transition:background .18s ease,transform .18s ease,color .18s ease;
}
.btn-icon:hover{background:var(--c-primary-soft);transform:translateY(-2px);color:var(--c-primary)}
.btn-icon svg{width:18px;height:18px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;font-size:15px;
  border-bottom:0;
}
.btn-text .arrow{transition:transform .18s ease}
.btn-text:hover{color:var(--c-accent);border-bottom-color:transparent}
.btn-text:hover .arrow{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12.5px;
  font-weight:500;
  line-height:1.7;
}
.badge-accent{background:var(--c-accent);color:#fff;font-weight:600}
.badge-soft{background:var(--c-surface-alt);color:var(--c-text-muted)}
.stamp{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  border-radius:6px;
  background:var(--c-surface);
  color:var(--c-primary);
  border:1px solid var(--c-line);
  font-size:12.5px;
  font-weight:500;
  letter-spacing:.04em;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--c-line);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(246,243,237,.96) 0%,rgba(246,243,237,.82) 55%,rgba(246,243,237,.62) 100%);
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:6fr 5fr;
  gap:48px;
  align-items:center;
  padding:72px 0 76px;
}
.hero-copy{max-width:620px}
.hero h1{margin-bottom:16px}
.hero h1 .hl{color:var(--c-primary)}
.hero-sub{
  font-size:17px;
  color:var(--c-text-muted);
  margin-bottom:20px;
  max-width:540px;
}
.hero-stamps{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-media{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--c-surface-alt);
  aspect-ratio:16/10;
  border:1px solid var(--c-line);
}
.hero-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.hero-media figcaption{
  position:absolute;
  left:16px;bottom:14px;
  background:rgba(255,255,255,.92);
  color:var(--c-text-muted);
  font-size:12.5px;
  padding:6px 12px;
  border-radius:var(--r-pill);
}
.breadcrumb{
  position:relative;
  padding:18px 0 0;
  font-size:13px;
  color:var(--c-text-muted);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--c-line)}
.breadcrumb a{color:var(--c-text-muted);border-bottom:0}
.breadcrumb a:hover{color:var(--c-primary);border-bottom-color:transparent}

/* ---------- 板块通用 ---------- */
.section{padding:80px 0}
.section-alt{background:var(--c-surface-alt)}
.section-surface{background:var(--c-surface)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{
  position:relative;
  display:inline-block;
  padding-top:14px;
  color:var(--c-accent);
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  margin-bottom:10px;
}
.section-head .eyebrow::before{
  content:"";
  position:absolute;
  left:0;top:0;
  width:38px;height:3px;
  background:var(--c-accent);
  border-radius:2px;
}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--c-text-muted);font-size:15.5px}
.section-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head-row .section-head{margin-bottom:0}

/* ---------- 时间轴 + 双列卡片 ---------- */
.timeline-layout{
  display:grid;
  grid-template-columns:300px 1fr;
  gap:44px;
  align-items:start;
}
.tl-panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:28px 24px 12px;
  box-shadow:var(--sh-1);
  position:sticky;
  top:92px;
}
.tl-panel h3{
  font-size:17px;
  margin-bottom:6px;
}
.tl-panel .tl-note{
  font-size:13px;
  color:var(--c-text-muted);
  margin-bottom:22px;
}
.tl-track{position:relative}
.tl-track::before{
  content:"";
  position:absolute;
  left:5px;top:8px;bottom:26px;
  width:2px;
  background:linear-gradient(180deg,var(--c-primary) 0%,rgba(20,99,92,.18) 100%);
}
.tl-node{
  position:relative;
  padding:0 0 22px 26px;
}
.tl-node::before{
  content:"";
  position:absolute;
  left:0;top:8px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--c-surface);
  border:2px solid var(--c-primary);
}
.tl-node.is-current::before{background:var(--c-accent);border-color:var(--c-accent)}
.tl-node .tl-idx{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--c-accent);
  letter-spacing:.08em;
  display:block;
  margin-bottom:2px;
}
.tl-node h4{font-size:15.5px;margin-bottom:2px}
.tl-node p{font-size:13px;color:var(--c-text-muted);line-height:1.7}

.tl-cards{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;
  flex-direction:column;
  box-shadow:var(--sh-1);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,122,60,.35)}
.card-cover{
  aspect-ratio:16/9;
  background:var(--c-surface-alt);
  overflow:hidden;
}
.card-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--c-text-muted)}
.card-body h3{font-size:18px;line-height:1.45}
.card-body p{
  font-size:14.5px;
  color:var(--c-text-muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px}

/* ---------- 自检清单 ---------- */
.checklist{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.check-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-left:3px solid var(--c-primary);
  border-radius:var(--r-md);
  padding:22px 20px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.check-item:hover{transform:translateY(-2px);box-shadow:var(--sh-1)}
.check-item .check-top{
  display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;
}
.check-item h3{font-size:16.5px}
.check-item p{font-size:14px;color:var(--c-text-muted)}

/* ---------- 场景卡 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.scene-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:28px 24px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(20,99,92,.28)}
.scene-num{
  font-family:var(--font-serif);
  font-size:30px;
  color:var(--c-primary-soft);
  -webkit-text-stroke:1px var(--c-primary);
  display:block;
  margin-bottom:14px;
}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{font-size:14.5px;color:var(--c-text-muted)}
.scene-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.scene-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--c-text-muted);
}
.scene-list li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-accent);
}

/* ---------- 相关推荐 ---------- */
.related-wrap{position:relative}
.related-scroll{
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:minmax(0,1fr);
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.related-scroll:not(.is-grid){
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:6px;
}
.related-scroll:not(.is-grid) .card{scroll-snap-align:start}
.related-head-actions{display:flex;gap:10px}
.related-foot{margin-top:24px;display:flex;justify-content:center}

/* ---------- FAQ ---------- */
.faq{
  border-top:1px solid var(--c-line);
  max-width:860px;
}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 4px 22px 0;
  text-align:left;
  font-family:var(--font-serif);
  font-size:17px;
  font-weight:600;
  color:var(--c-text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{
  flex-shrink:0;
  width:20px;height:20px;
  color:var(--c-primary);
  transition:transform .24s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s ease;
}
.faq-item.is-open .faq-a{max-height:320px}
.faq-a-inner{
  padding:0 40px 22px 16px;
  border-left:4px solid var(--c-primary);
  font-size:14.8px;
  color:var(--c-text-muted);
}

/* ---------- CTA 深条 ---------- */
.cta-band{
  position:relative;
  background:var(--c-primary-deep);
  color:#fff;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  opacity:.12;
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:56px 0;
  flex-wrap:wrap;
}
.cta-inner h2{color:#fff;margin-bottom:8px}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.cta-actions .btn-icon{
  background:rgba(255,255,255,.1);
  border-color:rgba(255,255,255,.35);
  color:#fff;
}
.cta-actions .btn-icon:hover{background:rgba(255,255,255,.22);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-deep);
  color:rgba(255,255,255,.72);
  border-top:3px solid var(--c-accent);
  padding:64px 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{color:var(--c-accent)}
.footer-brand p{color:rgba(255,255,255,.66);font-size:13.5px;line-height:1.8;max-width:340px}
.footer-col h4{
  color:#fff;
  font-size:15px;
  margin-bottom:18px;
  font-family:var(--font-sans);
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  color:rgba(255,255,255,.72);
  font-size:13.5px;
  border-bottom:0;
}
.footer-col a:hover{color:var(--c-accent);border-bottom-color:transparent}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;
  color:rgba(255,255,255,.58);
}

/* ---------- 移动端抽屉 & 底部 Tab ---------- */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:var(--c-bg);
  padding:24px 22px 32px;
  display:none;
  flex-direction:column;
  gap:6px;
  transform:translateY(-8px);
  opacity:0;
  transition:transform .22s ease,opacity .22s ease;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1}
.mobile-drawer .drawer-head{
  display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;
}
.mobile-drawer .drawer-link{
  display:block;
  padding:16px 14px;
  border-radius:var(--r-md);
  font-size:17px;
  font-family:var(--font-serif);
  color:var(--c-text);
  border-bottom:1px solid var(--c-line);
  border-radius:0;
}
.mobile-drawer .drawer-link.is-active{color:var(--c-primary);font-weight:600}
.mobile-drawer .drawer-cta{margin-top:26px}
.bottom-tab{display:none}

@media (max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:52px 0 56px}
  .hero-media{max-width:560px}
  .timeline-layout{grid-template-columns:1fr;gap:32px}
  .tl-panel{position:static}
  .checklist{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .related-scroll{
    grid-template-columns:none;
    grid-auto-columns:82%;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
  }
}
@media (max-width:767px){
  body{padding-bottom:calc(68px + env(safe-area-inset-bottom))}
  .container{padding:0 18px}
  .section{padding:48px 0}
  .header-cta-desktop{display:none}
  .tl-cards{grid-template-columns:1fr}
  .checklist{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .faq-a-inner{padding-right:12px}
  .cta-inner{padding:44px 0;flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:32px}
  .footer-brand{grid-column:1 / -1}
  .section-head-row{flex-direction:column;align-items:flex-start}
  .bottom-tab{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    background:var(--c-surface);
    border-top:1px solid var(--c-line);
    box-shadow:0 -6px 20px -14px rgba(20,35,33,.35);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .bottom-tab a{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:3px;
    height:64px;
    font-size:10px;
    color:var(--c-text-muted);
    border-bottom:0;
    position:relative;
  }
  .bottom-tab a svg{width:22px;height:22px}
  .bottom-tab a.is-active{color:var(--c-primary);font-weight:600}
  .bottom-tab a.is-active::before{
    content:"";
    position:absolute;top:0;left:26%;right:26%;
    height:2px;
    background:var(--c-primary);
    border-radius:0 0 2px 2px;
  }
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .card-body{padding:18px}
  .footer-grid{grid-template-columns:1fr}
}