/* roulang page: index */
:root{
  --ink-900:#14111A;
  --ink-700:#2B2632;
  --ink-500:#6B6472;
  --paper:#F7F4EE;
  --paper-2:#EFEAE1;
  --accent:#B4123F;
  --accent-dark:#8E0E32;
  --accent-soft:#F3E2E6;
  --jade:#2E5B54;
  --line:rgba(20,17,26,.10);
  --white:#FFFFFF;
  --sh-1:0 1px 2px rgba(20,17,26,.05);
  --sh-2:0 10px 30px -16px rgba(20,17,26,.22);
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

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

body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-900);
  background-color:var(--paper);
  background-image:
    linear-gradient(rgba(20,17,26,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(20,17,26,.025) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;height:auto;display:block;}
a{color:var(--ink-900);text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:-.01em;line-height:1.25;margin:0;color:var(--ink-900);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}

.wrap{max-width:1240px;margin-inline:auto;padding-inline:32px;width:100%;}
.section{padding-block:96px;position:relative;}
.section-alt{background:var(--paper-2);border-block:1px solid var(--line);}
section[id]{scroll-margin-top:110px;}

/* ---------- 按钮 ---------- */
.btn-rou{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-family:var(--sans);font-size:15px;font-weight:600;letter-spacing:.06em;
  border:1px solid transparent;cursor:pointer;position:relative;overflow:hidden;
  transition:background-color .26s var(--ease),color .26s var(--ease),transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.btn-primary-rou{background:var(--accent);color:#fff;}
.btn-primary-rou:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary-rou::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--ink-900);
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.btn-primary-rou:hover::after{transform:scaleX(1);}
.btn-ghost-rou{background:transparent;border-color:var(--ink-900);color:var(--ink-900);}
.btn-ghost-rou:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-1px);}
.btn-light-rou{background:var(--paper);color:var(--ink-900);border-color:var(--paper);}
.btn-light-rou:hover{background:var(--accent);color:#fff;border-color:var(--accent);transform:translateY(-1px);}
.btn-outline-light-rou{background:transparent;color:var(--paper);border-color:rgba(247,244,238,.42);}
.btn-outline-light-rou:hover{background:var(--paper);color:var(--ink-900);border-color:var(--paper);}
.btn-sm-rou{height:42px;padding:0 20px;font-size:14px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1035;
  background:rgba(247,244,238,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(150%) blur(10px);
  -webkit-backdrop-filter:saturate(150%) blur(10px);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;gap:30px;min-height:82px;padding-block:12px;}

.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{width:8px;height:28px;background:var(--accent);border-radius:1px;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-family:var(--serif);font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--ink-900);}
.brand-sub{font-size:11px;letter-spacing:.2em;color:var(--ink-500);margin-top:4px;}

.nav-links{display:flex;align-items:center;gap:20px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14px;font-weight:500;color:var(--ink-700);white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);
  transition:width .28s var(--ease);
}
.nav-links a:hover{color:var(--ink-900);}
.nav-links a:hover::after,.nav-links a.active::after{width:100%;}
.nav-links a.active{color:var(--ink-900);font-weight:700;}

.nav-cta{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.nav-btn{height:46px;padding:0 22px;font-size:14px;}

.nav-toggle{
  display:none;margin-left:auto;width:46px;height:46px;border:1px solid var(--line);
  border-radius:var(--r-sm);background:var(--white);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink-900);border-radius:1px;}

.offcanvas.rou-drawer{background:var(--paper);width:min(88vw,380px);border-left:1px solid var(--line);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:22px 24px;border-bottom:1px solid var(--line);}
.drawer-brand{font-family:var(--serif);font-size:16px;font-weight:700;}
.drawer-close{border:0;background:transparent;font-size:22px;line-height:1;color:var(--ink-500);cursor:pointer;}
.drawer-links{display:flex;flex-direction:column;padding:12px 0;}
.drawer-links a{
  display:block;padding:14px 24px;font-size:17px;font-family:var(--serif);font-weight:600;
  color:var(--ink-700);border-left:3px solid transparent;transition:background-color .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.drawer-links a:hover,.drawer-links a.active{background:var(--paper-2);border-left-color:var(--accent);color:var(--ink-900);}
.drawer-foot{padding:20px 24px 30px;}

/* ---------- Hero ---------- */
.hero{position:relative;padding-block:80px 96px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(900px 460px at 88% 4%,rgba(180,18,63,.07),transparent 70%);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.pill{
  display:inline-block;padding:5px 14px;border-radius:999px;
  font-size:12px;letter-spacing:.12em;font-weight:500;
  background:var(--white);border:1px solid var(--line);color:var(--ink-700);
}
.pill-accent{background:var(--accent-soft);border-color:rgba(180,18,63,.22);color:var(--accent);}
.pill-jade{background:rgba(46,91,84,.08);border-color:rgba(46,91,84,.22);color:var(--jade);}

.hero h1{
  font-size:clamp(34px,4.3vw,56px);
  line-height:1.14;
  font-weight:900;
  letter-spacing:-.015em;
  margin-bottom:24px;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-lead{font-size:17px;color:var(--ink-700);max-width:36em;line-height:1.85;margin-bottom:34px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:44px;margin-top:46px;padding-top:28px;border-top:1px solid var(--line);}
.stat-num{font-family:var(--serif);font-size:36px;font-weight:700;line-height:1;letter-spacing:.02em;}
.stat-label{font-size:12px;letter-spacing:.14em;color:var(--ink-500);margin-top:9px;}

.hero-cover{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);aspect-ratio:4/5;background:var(--paper-2);}
.hero-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
.hero-cover:hover img{transform:scale(1.03);}
.hero-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,17,26,0) 44%,rgba(20,17,26,.5));pointer-events:none;}
.cover-badge{
  position:absolute;right:16px;bottom:16px;z-index:2;
  background:var(--accent);color:#fff;font-size:12px;letter-spacing:.18em;font-weight:600;
  padding:7px 14px;border-radius:var(--r-sm);
}
.cover-index{
  position:absolute;left:16px;top:16px;z-index:2;
  font-family:var(--serif);font-size:13px;letter-spacing:.16em;color:var(--ink-900);
  background:rgba(247,244,238,.92);padding:6px 12px;border-radius:var(--r-sm);
}

/* ---------- 区块标题 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;flex-wrap:wrap;margin-bottom:44px;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.18em;color:var(--accent);font-weight:600;margin-bottom:16px;}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--accent);display:block;}
.sec-head h2{font-size:clamp(26px,3.1vw,40px);line-height:1.22;}
.sec-note{color:var(--ink-500);font-size:15px;line-height:1.8;max-width:32em;margin:0;}
.sec-link{font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--accent);white-space:nowrap;border-bottom:1px solid rgba(180,18,63,.3);padding-bottom:3px;transition:border-color .26s var(--ease);}
.sec-link:hover{border-color:var(--accent);}

/* ---------- 合集目录 ---------- */
.catalog{border-top:1px solid var(--line);}
.catalog-row{
  display:grid;grid-template-columns:76px 1fr 120px 28px;gap:24px;align-items:center;
  padding:26px 14px 26px 10px;border-bottom:1px solid var(--line);
  transition:background-color .28s var(--ease),padding-left .28s var(--ease);
}
.catalog-row:hover{background:var(--paper-2);padding-left:22px;}
.catalog-idx{font-family:var(--serif);font-size:34px;font-weight:700;line-height:1;letter-spacing:.04em;color:var(--accent);}
.catalog-title{font-family:var(--serif);font-size:21px;font-weight:700;margin-bottom:6px;transition:color .26s var(--ease);}
.catalog-row:hover .catalog-title{color:var(--accent);}
.catalog-desc{margin:0;color:var(--ink-500);font-size:15px;line-height:1.7;}
.catalog-count{font-size:13px;color:var(--ink-500);letter-spacing:.08em;text-align:right;font-family:var(--serif);}
.catalog-arrow{font-size:19px;color:var(--ink-500);transition:transform .28s var(--ease),color .28s var(--ease);text-align:right;}
.catalog-row:hover .catalog-arrow{transform:translateX(5px);color:var(--accent);}

/* ---------- Bento 精选 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.bcell{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.bcell:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.bcell-a{grid-column:span 8;}
.bcell-b{grid-column:span 4;}
.bcell-c,.bcell-d,.bcell-e{grid-column:span 4;}
.bcell-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--paper-2);}
.bcell-a .bcell-media{aspect-ratio:16/8;}
.bcell-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.bcell:hover .bcell-media img{transform:scale(1.03);}
.bcell-media::after{content:"";position:absolute;inset:0;background:rgba(20,17,26,0);transition:background-color .4s var(--ease);pointer-events:none;}
.bcell:hover .bcell-media::after{background:rgba(20,17,26,.18);}
.bcell-no{
  position:absolute;left:14px;top:14px;z-index:2;
  font-family:var(--serif);font-size:12px;letter-spacing:.16em;font-weight:700;
  background:rgba(247,244,238,.94);color:var(--ink-900);padding:5px 11px;border-radius:var(--r-sm);
}
.bcell-tag{
  position:absolute;right:14px;top:14px;z-index:2;
  background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:5px 11px;border-radius:999px;
}
.bcell-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1;}
.bcell-title{font-size:19px;line-height:1.4;margin-bottom:10px;font-weight:700;}
.bcell-desc{font-size:14.5px;color:var(--ink-500);line-height:1.75;margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.bcell-meta{margin-top:auto;font-size:13px;color:var(--ink-500);letter-spacing:.06em;display:flex;align-items:center;gap:10px;}
.bcell-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-500);}

/* ---------- 最新信息列表 ---------- */
.feed-layout{display:grid;grid-template-columns:1fr 300px;gap:48px;align-items:start;}
.feed{border-top:1px solid var(--line);}
.feed-row{
  display:grid;grid-template-columns:100px 1fr 30px;gap:24px;align-items:start;
  padding:24px 12px 24px 6px;border-bottom:1px solid var(--line);
  transition:background-color .28s var(--ease),padding-left .28s var(--ease);
}
.feed-row:hover{background:var(--paper-2);padding-left:16px;}
.feed-date{
  display:flex;align-items:center;justify-content:center;min-height:66px;padding:8px 6px;
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--white);
  font-family:var(--serif);font-size:14px;font-weight:700;letter-spacing:.02em;
  color:var(--ink-700);text-align:center;line-height:1.4;
}
.feed-title{font-size:19px;line-height:1.45;margin:0 0 8px;font-weight:700;transition:color .26s var(--ease);}
.feed-row:hover .feed-title{color:var(--accent);}
.feed-desc{margin:0;font-size:14.5px;color:var(--ink-500);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feed-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px;}
.tag{display:inline-block;padding:3px 11px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.06em;}
.tag-jade{background:rgba(46,91,84,.08);color:var(--jade);}
.feed-arrow{font-size:18px;color:var(--ink-500);transition:transform .28s var(--ease),color .28s var(--ease);text-align:right;padding-top:16px;}
.feed-row:hover .feed-arrow{transform:translateX(5px);color:var(--accent);}

.feed-empty{
  border:1px dashed var(--line);border-radius:var(--r-md);background:var(--white);
  padding:44px 28px;text-align:center;
}
.feed-empty p{color:var(--ink-500);font-size:15px;margin:0 0 18px;}

.aside-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);
}
.aside-card h3{font-size:17px;margin-bottom:16px;}
.aside-list{display:flex;flex-direction:column;gap:0;}
.aside-list li{
  display:flex;justify-content:space-between;gap:12px;
  padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink-700);
}
.aside-list li:last-child{border-bottom:0;padding-bottom:0;}
.aside-list span:last-child{color:var(--ink-500);font-family:var(--serif);letter-spacing:.04em;}
.aside-note{margin-top:18px;font-size:13px;color:var(--ink-500);line-height:1.75;}

/* ---------- 横向推荐 ---------- */
.rail{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;-ms-overflow-style:none;scrollbar-width:none;}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 306px;scroll-snap-align:start;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.rail-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.rail-card img{aspect-ratio:3/2;width:100%;object-fit:cover;}
.rail-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.rail-body h3{font-size:17px;line-height:1.45;margin-bottom:8px;}
.rail-body p{font-size:14px;color:var(--ink-500);line-height:1.7;margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rail-body .bcell-meta{margin-top:auto;}

/* ---------- 深色 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--ink-900);color:var(--paper);
  padding:56px 56px;display:flex;align-items:center;justify-content:space-between;gap:44px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(135deg,rgba(247,244,238,.05) 0 2px,transparent 2px 14px);
  opacity:.9;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{color:var(--paper);font-size:clamp(26px,3vw,38px);line-height:1.25;margin-bottom:12px;}
.cta-band p{color:rgba(247,244,238,.72);font-size:15px;margin:0;max-width:34em;line-height:1.8;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);}
.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:28px;
  padding:26px 4px;font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink-900);
  transition:color .26s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-sign{position:relative;flex-shrink:0;width:20px;height:20px;}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--ink-500);border-radius:1px;
  transition:transform .3s var(--ease),background-color .3s var(--ease);
}
.faq-sign::before{left:0;top:9px;width:20px;height:2px;}
.faq-sign::after{left:9px;top:0;width:2px;height:20px;}
.faq-item[open] .faq-sign::after{transform:scaleY(0);}
.faq-item[open] .faq-sign::before{background:var(--accent);}
.faq-answer{padding:0 4px 30px;max-width:660px;font-size:15.5px;line-height:1.85;color:var(--ink-700);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(247,244,238,.76);padding-block:80px 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;padding-bottom:56px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand-main{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--paper);letter-spacing:-.01em;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(247,244,238,.62);max-width:26em;margin-bottom:18px;}
.footer-domain{font-size:13px;letter-spacing:.1em;color:rgba(247,244,238,.42);}
.footer-col h4{font-size:13px;letter-spacing:.18em;color:rgba(247,244,238,.55);font-weight:600;margin-bottom:20px;font-family:var(--sans);}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14.5px;color:rgba(247,244,238,.76);transition:color .26s var(--ease),transform .26s var(--ease);display:inline-block;}
.footer-links a:hover{color:var(--accent);transform:translateX(3px);}
.footer-bottom{
  border-top:1px solid rgba(247,244,238,.12);
  padding-block:24px 30px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,244,238,.5);letter-spacing:.04em;
}
.footer-bottom a{color:rgba(247,244,238,.5);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- 入场动效 ---------- */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.fade-up.in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .fade-up{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{gap:40px;}
  .catalog-count{display:none;}
  .catalog-row{grid-template-columns:64px 1fr 24px;}
  .feed-layout{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}

@media (max-width:991px){
  .section{padding-block:72px;}
  .hero{padding-block:56px 72px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-cover{max-width:440px;margin-inline:auto;width:100%;}
  .bcell-a,.bcell-b,.bcell-c,.bcell-d,.bcell-e{grid-column:span 6;}
  .bcell-a .bcell-media{aspect-ratio:16/9;}
  .cta-band{padding:40px 32px;}
  .footer-grid{gap:32px;}
}

@media (max-width:767px){
  .wrap{padding-inline:20px;}
  .section{padding-block:60px;}
  .brand-main{font-size:16px;}
  .hero h1{font-size:clamp(28px,7vw,38px);}
  .hero-lead{font-size:16px;}
  .hero-stats{gap:28px 36px;}
  .stat-num{font-size:30px;}
  .bcell-a,.bcell-b,.bcell-c,.bcell-d,.bcell-e{grid-column:span 12;}
  .catalog-row{grid-template-columns:52px 1fr 22px;gap:16px;padding:22px 6px;}
  .catalog-idx{font-size:26px;}
  .catalog-title{font-size:18px;}
  .feed-row{grid-template-columns:74px 1fr;gap:16px;padding:20px 4px;}
  .feed-arrow{display:none;}
  .feed-date{min-height:58px;font-size:12.5px;}
  .feed-title{font-size:17px;}
  .cta-band{padding:34px 22px;border-radius:var(--r-md);}
  .cta-actions{width:100%;}
  .cta-actions .btn-rou{width:100%;}
  .faq-item summary{font-size:16.5px;padding:22px 2px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;padding-bottom:40px;}
  .site-footer{padding-top:60px;}
  .footer-bottom{font-size:12.5px;}
}

@media (max-width:575px){
  body{font-size:16px;}
  .hero-actions{width:100%;}
  .hero-actions .btn-rou{width:100%;}
  .hero-tags{gap:8px;}
  .pill{font-size:11px;padding:4px 11px;}
  .rail-card{flex:0 0 84%;}
  .bcell-body{padding:20px 20px 22px;}
  .sec-head{margin-bottom:32px;}
}

/* roulang page: article */
:root{
  --ink-900:#14111A;
  --ink-700:#2B2632;
  --ink-500:#6B6472;
  --paper:#F7F4EE;
  --paper-2:#EFEAE1;
  --accent:#B4123F;
  --accent-deep:#8E0E32;
  --accent-soft:#F3E2E6;
  --accent-light:#E26C8C;
  --jade:#2E5B54;
  --line:rgba(20,17,26,.10);
  --line-strong:rgba(20,17,26,.20);
  --r4:4px;
  --r8:8px;
  --r14:14px;
  --sh1:0 1px 2px rgba(20,17,26,.05);
  --sh2:0 10px 30px -16px rgba(20,17,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink-900);text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:-.01em;margin:0;}
p{margin:0;}
ul,ol{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.btn-main:focus-visible,.btn-ghost:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
.wrap{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}
/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,244,238,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:80px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled .header-inner{height:70px;}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:8px;
  height:8px;
  background:var(--accent);
  display:block;
  border-radius:1px;
}
.brand-main{
  display:block;
  font-family:var(--serif);
  font-size:18px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--ink-900);
}
.brand-sub{
  display:block;
  font-size:11px;
  letter-spacing:.2em;
  color:var(--ink-500);
  line-height:1.4;
  margin-top:2px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--ink-700);
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  height:2px;
  width:0;
  background:var(--accent);
  transition:width .28s var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after{width:100%;}
.nav-links a.active{color:var(--ink-900);font-weight:500;}
.header-actions{
  display:flex;
  align-items:center;
  gap:18px;
  flex-shrink:0;
}
.header-link{
  font-size:14px;
  color:var(--ink-500);
  white-space:nowrap;
}
.header-link:hover{color:var(--accent);}
.btn-main,.btn-ghost,.btn-light{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  padding:0 28px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.06em;
  border-radius:var(--r4);
  border:1px solid transparent;
  cursor:pointer;
  overflow:hidden;
  transition:background .26s var(--ease),color .26s var(--ease),transform .26s var(--ease),border-color .26s var(--ease);
  white-space:nowrap;
}
.btn-main{background:var(--accent);color:#fff;}
.btn-main::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:0;
  background:rgba(20,17,26,.85);
  transition:width .3s var(--ease);
}
.btn-main:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);}
.btn-main:hover::after{width:100%;}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-1px);}
.btn-light{background:var(--paper);color:var(--ink-900);}
.btn-light:hover{background:var(--accent);color:#fff;transform:translateY(-1px);}
.btn-sm{height:42px;padding:0 22px;font-size:14px;}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border:1px solid var(--line-strong);
  border-radius:var(--r4);
  background:transparent;
  color:var(--ink-900);
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:1.5px;
  background:var(--ink-900);
}
/* ---------- offcanvas ---------- */
.oc-panel{background:var(--paper);width:min(360px,86vw);}
.oc-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:22px 22px 18px;
  border-bottom:1px solid var(--line);
}
.oc-title{
  font-family:var(--serif);
  font-size:16px;
  font-weight:700;
  color:var(--ink-900);
}
.oc-body{
  padding:8px 22px 28px;
  display:flex;
  flex-direction:column;
}
.oc-body a.oc-link{
  display:block;
  font-size:18px;
  font-family:var(--serif);
  color:var(--ink-900);
  padding:16px 0;
  border-bottom:1px solid var(--line);
}
.oc-body a.oc-link:hover{color:var(--accent);}
.oc-cta{margin-top:24px;width:100%;}
/* ---------- breadcrumb ---------- */
.crumb-bar{
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.crumbs{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--ink-500);
  padding:18px 0;
}
.crumbs a{color:var(--ink-500);}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{color:var(--line-strong);}
.crumb-current{
  max-width:340px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--ink-700);
}
/* ---------- article hero ---------- */
.article-hero{
  padding:56px 0 56px;
  background:var(--paper);
}
.article-hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 380px;
  gap:56px;
  align-items:start;
}
.badge-cat{
  display:inline-block;
  background:var(--accent-soft);
  color:var(--accent);
  font-size:12px;
  letter-spacing:.16em;
  padding:6px 14px;
  border-radius:999px;
  line-height:1.6;
}
.article-title{
  font-size:clamp(32px,4vw,52px);
  line-height:1.16;
  margin:22px 0 0;
  color:var(--ink-900);
  max-width:20em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 24px;
  margin-top:30px;
  font-size:13px;
  color:var(--ink-500);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px;}
.article-meta .meta-item::before{
  content:"";
  width:5px;height:5px;
  background:var(--line-strong);
  display:inline-block;
}
.article-meta .meta-item:first-child::before{background:var(--accent);}
.meta-version{color:var(--jade);letter-spacing:.1em;font-size:12.5px;}
.article-cover{
  margin:0;
  position:relative;
}
.article-cover img{
  width:100%;
  border-radius:var(--r14);
  border:1px solid var(--line);
  box-shadow:var(--sh2);
  aspect-ratio:4/5;
  object-fit:cover;
}
.cover-badge{
  position:absolute;
  right:14px;
  bottom:14px;
  background:rgba(247,244,238,.94);
  color:var(--ink-900);
  font-size:12px;
  letter-spacing:.16em;
  padding:6px 12px;
  border-radius:999px;
  border:1px solid var(--line);
}
/* ---------- article layout ---------- */
.article-main{
  padding:64px 0 96px;
  background:var(--paper);
  border-top:1px solid var(--line);
}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:64px;
  align-items:start;
  max-width:1120px;
  margin:0 auto;
}
.article-body{
  font-size:17px;
  line-height:1.85;
  color:var(--ink-900);
  max-width:760px;
  min-width:0;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  font-size:clamp(24px,2.4vw,32px);
  line-height:1.32;
  margin:48px 0 20px;
  padding-left:18px;
  position:relative;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.2em;
  bottom:.2em;
  width:3px;
  background:var(--accent);
}
.article-body h3{
  font-size:21px;
  line-height:1.45;
  margin:36px 0 14px;
  color:var(--ink-700);
}
.article-body h4{
  font-size:18px;
  margin:28px 0 12px;
  color:var(--ink-700);
}
.article-body a{
  color:var(--accent);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.article-body a:hover{color:var(--accent-deep);}
.article-body ul,
.article-body ol{
  padding:0;
  margin:0 0 24px;
  list-style:none;
}
.article-body ul li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.66em;
  width:7px;
  height:7px;
  background:var(--accent);
  border-radius:1px;
}
.article-body ol{counter-reset:artlist;}
.article-body ol li{
  position:relative;
  padding-left:36px;
  margin-bottom:12px;
  counter-increment:artlist;
}
.article-body ol li::before{
  content:counter(artlist,decimal-leading-zero);
  position:absolute;
  left:0;
  top:0;
  font-family:var(--serif);
  font-size:15px;
  letter-spacing:.04em;
  color:var(--accent);
}
.article-body blockquote{
  margin:28px 0;
  padding:18px 24px;
  background:var(--paper-2);
  border-left:2px solid var(--ink-900);
  font-size:16px;
  color:var(--ink-700);
  border-radius:0 var(--r8) var(--r8) 0;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;
  border-radius:var(--r8);
  margin:26px 0;
  border:1px solid var(--line);
}
.article-body figure{margin:28px 0;}
.article-body figure img{margin:0;}
.article-body figcaption{
  font-size:12px;
  color:var(--ink-500);
  margin-top:10px;
  text-align:center;
  letter-spacing:.04em;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
}
.article-body th,
.article-body td{
  border-bottom:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{
  background:var(--paper-2);
  font-weight:600;
  font-family:var(--serif);
}
.article-body tr:hover td{background:rgba(239,234,225,.55);}
.article-body hr{
  border:0;
  border-top:1px solid var(--line);
  margin:40px 0;
}
.article-body strong{font-weight:700;}
.article-body code{
  background:var(--paper-2);
  padding:2px 6px;
  border-radius:var(--r4);
  font-size:14px;
}
/* ---------- empty state ---------- */
.article-empty{
  border:1px dashed var(--line-strong);
  border-radius:var(--r14);
  padding:56px 36px;
  text-align:center;
  background:var(--paper-2);
}
.article-empty h2{
  font-size:26px;
  padding:0;
  margin:0 0 14px;
}
.article-empty h2::before{display:none;}
.article-empty p{
  color:var(--ink-500);
  font-size:15px;
  margin:0 0 28px;
}
/* ---------- sidebar ---------- */
.article-side{
  position:sticky;
  top:104px;
  display:flex;
  flex-direction:column;
  gap:24px;
  min-width:0;
}
.side-card{
  border:1px solid var(--line);
  border-radius:var(--r14);
  padding:22px;
  background:rgba(239,234,225,.5);
}
.side-title{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--ink-500);
  font-weight:500;
  margin:0 0 16px;
}
.side-list{
  list-style:none;
  padding:0;
  margin:0;
  font-size:14px;
}
.side-list li{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:9px 0;
  border-bottom:1px dashed var(--line);
  color:var(--ink-500);
}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list .val{
  font-family:var(--serif);
  color:var(--ink-900);
  letter-spacing:.02em;
  text-align:right;
}
.side-rel a{
  display:flex;
  gap:12px;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  align-items:flex-start;
}
.side-rel a:last-child{border-bottom:0;padding-bottom:0;}
.side-rel img{
  width:64px;
  height:48px;
  object-fit:cover;
  border-radius:var(--r4);
  flex-shrink:0;
}
.side-rel .rel-t{
  font-size:14px;
  line-height:1.5;
  color:var(--ink-900);
  font-weight:500;
}
.side-rel a:hover .rel-t{color:var(--accent);}
.side-rel .rel-m{
  display:block;
  font-size:12px;
  color:var(--ink-500);
  margin-top:4px;
  letter-spacing:.04em;
}
.side-actions{display:flex;flex-direction:column;gap:12px;}
.side-actions .btn-main,
.side-actions .btn-ghost{width:100%;}
/* ---------- tag row / pager ---------- */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:52px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.tag-row .tag-label{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--ink-500);
  align-self:center;
  margin-right:4px;
}
.tag{
  font-size:13px;
  padding:6px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--ink-700);
  background:transparent;
  transition:border-color .26s var(--ease),color .26s var(--ease),background .26s var(--ease);
}
.tag:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);}
.pager{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  margin-top:44px;
}
.pager a{
  display:block;
  border:1px solid var(--line);
  border-radius:var(--r14);
  padding:22px 24px;
  background:rgba(247,244,238,.6);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.pager a:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh2);
  border-color:var(--line-strong);
}
.pager .pager-dir{
  display:block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--ink-500);
  margin-bottom:8px;
}
.pager .pager-name{
  font-family:var(--serif);
  font-size:19px;
  color:var(--ink-900);
  line-height:1.4;
}
.pager a:hover .pager-name{color:var(--accent);}
.pager .pager-next{text-align:right;}
/* ---------- related ---------- */
.related{
  background:var(--paper-2);
  padding:88px 0;
  border-top:1px solid var(--line);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-kicker{
  font-size:12px;
  letter-spacing:.2em;
  color:var(--accent);
  margin-bottom:12px;
  display:block;
}
.section-title{
  font-size:clamp(26px,3vw,36px);
  line-height:1.25;
}
.section-more{
  font-size:14px;
  color:var(--ink-500);
  border-bottom:1px solid var(--line-strong);
  padding-bottom:3px;
  white-space:nowrap;
}
.section-more:hover{color:var(--accent);border-color:var(--accent);}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--r14);
  background:var(--paper);
  overflow:hidden;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);}
.rel-card .thumb{position:relative;overflow:hidden;}
.rel-card .thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.rel-card:hover .thumb img{transform:scale(1.03);}
.rel-card .thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(20,17,26,0);
  transition:background .3s var(--ease);
}
.rel-card:hover .thumb::after{background:rgba(20,17,26,.18);}
.rel-card .body{padding:20px 22px 24px;}
.rel-card .cat{
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--accent);
  background:var(--accent-soft);
  padding:4px 10px;
  border-radius:999px;
  display:inline-block;
  margin-bottom:12px;
}
.rel-card h3{
  font-size:18px;
  line-height:1.45;
  margin:0 0 10px;
  color:var(--ink-900);
}
.rel-card:hover h3{color:var(--accent);}
.rel-card p{
  font-size:14px;
  color:var(--ink-500);
  line-height:1.75;
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
/* ---------- cta band ---------- */
.cta-section{
  background:var(--paper-2);
  padding:0 0 96px;
}
.cta-band{
  position:relative;
  background:var(--ink-900);
  color:var(--paper);
  border-radius:var(--r14);
  padding:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(247,244,238,.06) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.cta-copy{position:relative;max-width:640px;}
.cta-copy .cta-kicker{
  display:block;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--accent-light);
  margin-bottom:14px;
}
.cta-copy h2{
  font-size:clamp(26px,3vw,40px);
  line-height:1.25;
  color:var(--paper);
  margin:0 0 14px;
}
.cta-copy p{
  font-size:15px;
  color:rgba(247,244,238,.66);
  margin:0;
}
.cta-actions{
  position:relative;
  display:flex;
  gap:14px;
  flex-shrink:0;
}
.cta-actions .btn-ghost{
  border-color:rgba(247,244,238,.4);
  color:var(--paper);
}
.cta-actions .btn-ghost:hover{
  background:var(--paper);
  color:var(--ink-900);
  border-color:var(--paper);
}
/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(247,244,238,.8);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:44px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
}
.footer-brand-main{
  font-family:var(--serif);
  font-size:17px;
  font-weight:700;
  color:var(--paper);
  letter-spacing:-.01em;
}
.footer-desc{
  font-size:14px;
  line-height:1.9;
  color:rgba(247,244,238,.6);
  margin:16px 0 14px;
  max-width:36em;
}
.footer-domain{
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(247,244,238,.38);
}
.footer-col h4{
  font-family:var(--sans);
  font-size:12px;
  font-weight:500;
  letter-spacing:.16em;
  color:rgba(247,244,238,.45);
  margin:0 0 18px;
}
.footer-links a{
  display:block;
  font-size:14px;
  color:rgba(247,244,238,.8);
  padding:6px 0;
  transition:color .26s var(--ease),transform .26s var(--ease);
}
.footer-links a:hover{
  color:var(--accent-light);
  transform:translateX(2px);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  margin-top:56px;
  padding:24px 0;
  border-top:1px solid rgba(247,244,238,.14);
  font-size:12.5px;
  color:rgba(247,244,238,.45);
}
.footer-bottom a{color:rgba(247,244,238,.62);}
.footer-bottom a:hover{color:var(--accent-light);}
/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-layout{
    grid-template-columns:1fr;
    gap:48px;
    max-width:760px;
  }
  .article-side{
    position:static;
    top:auto;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
  }
  .article-side .side-actions{grid-column:1/-1;}
}
@media (max-width:991px){
  .nav-links,.header-link{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:70px;gap:16px;}
  .header-actions{margin-left:auto;}
  .article-hero{padding:40px 0 48px;}
  .article-hero-grid{grid-template-columns:1fr;gap:32px;}
  .article-cover img{aspect-ratio:16/9;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px;gap:28px;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  .article-main{padding:48px 0 64px;}
  .article-body{font-size:16.5px;}
  .article-side{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .related{padding:64px 0;}
  .pager{grid-template-columns:1fr;}
  .pager .pager-next{text-align:left;}
  .cta-section{padding-bottom:64px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:575px){
  .brand-main{font-size:15px;}
  .brand-sub{font-size:10px;letter-spacing:.16em;}
  .btn-sm{display:none;}
  .article-title{font-size:27px;}
  .article-meta{gap:8px 16px;font-size:12.5px;}
  .crumb-current{max-width:180px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 22px;border-radius:var(--r8);}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;}
  .article-side .btn-main,.article-side .btn-ghost{width:100%;}
  .article-empty{padding:40px 22px;}
  .side-card{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
:root{
  --ink-900:#14111A;
  --ink-700:#2B2632;
  --ink-500:#6B6472;
  --paper:#F7F4EE;
  --paper-2:#EFEAE1;
  --white:#FFFFFF;
  --accent:#B4123F;
  --accent-deep:#8E0E32;
  --accent-soft:#F3E2E6;
  --jade:#2E5B54;
  --line:rgba(20,17,26,.10);
  --line-strong:rgba(20,17,26,.18);
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --sh-1:0 1px 2px rgba(20,17,26,.05);
  --sh-2:0 10px 30px -16px rgba(20,17,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1240px;
  --serif:"Noto Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease),transform .24s var(--ease);}
button{font:inherit;color:inherit;cursor:pointer;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;color:var(--ink-900);letter-spacing:-.01em;margin:0;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
::selection{background:var(--accent-soft);color:var(--ink-900);}

/* ---------- 容器 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;border-bottom:1px solid var(--line);}
.section:last-of-type{border-bottom:0;}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.18em;font-weight:500;
  color:var(--accent);text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block;}
.section-head h2{font-size:clamp(28px,3.4vw,38px);line-height:1.28;margin-bottom:16px;}
.section-head p{color:var(--ink-500);font-size:16px;max-width:640px;margin:0;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,244,238,.95);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:30px;min-height:80px;transition:min-height .3s var(--ease);}
.site-header.is-scrolled .header-inner{min-height:68px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{width:9px;height:9px;background:var(--accent);display:block;flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-family:var(--serif);font-weight:700;font-size:18px;letter-spacing:.01em;color:var(--ink-900);}
.brand-sub{font-size:10.5px;letter-spacing:.22em;color:var(--ink-500);margin-top:4px;}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:8px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .28s var(--ease);
}
.nav-links a:hover{color:var(--ink-900);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--ink-900);font-weight:700;}
.nav-links a.active::after{width:100%;}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:auto;flex-shrink:0;}
.header-text-link{font-size:14px;color:var(--ink-500);border-bottom:1px solid transparent;padding-bottom:2px;}
.header-text-link:hover{color:var(--accent);border-bottom-color:var(--accent);}
.nav-toggle{
  display:none;align-items:center;gap:8px;background:transparent;
  border:1px solid var(--line-strong);border-radius:var(--r-sm);
  padding:9px 14px;font-size:13.5px;font-weight:500;color:var(--ink-900);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.nav-toggle:hover{background:var(--paper-2);border-color:var(--ink-900);}
.nav-toggle i{display:block;width:16px;height:1.5px;background:var(--ink-900);box-shadow:0 5px 0 var(--ink-900),0 -5px 0 var(--ink-900);}

/* ---------- 按钮 ---------- */
.btn-solid,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.05em;
  position:relative;overflow:hidden;
  transition:background .26s var(--ease),color .26s var(--ease),transform .26s var(--ease),border-color .26s var(--ease);
}
.btn-solid{background:var(--accent);color:#fff;border:1px solid var(--accent);}
.btn-solid::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--ink-900);transition:width .3s var(--ease);
}
.btn-solid:hover{background:var(--accent-deep);border-color:var(--accent-deep);transform:translateY(-1px);color:#fff;}
.btn-solid:hover::after{width:100%;}
.btn-ghost{background:transparent;color:var(--ink-900);border:1px solid var(--line-strong);}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);border-color:var(--ink-900);transform:translateY(-1px);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn-on-dark{background:var(--paper);color:var(--ink-900);border-color:var(--paper);}
.btn-on-dark:hover{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-on-dark:hover::after{background:var(--paper);}

/* ---------- 页头 ---------- */
.page-hero{position:relative;background:var(--paper-2);border-bottom:1px solid var(--line);overflow:hidden;}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.14;filter:grayscale(.4);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(20,17,26,.05) 0 1px,transparent 1px 26px);
  opacity:.5;pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2;padding:56px 0 72px;}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500);margin-bottom:28px;flex-wrap:wrap;}
.crumbs a{color:var(--ink-500);}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{opacity:.5;}
.crumbs .cur{color:var(--ink-900);font-weight:500;}
.hero-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:56px;align-items:center;}
.hero-badges{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px;}
.badge-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--accent-soft);color:var(--accent-deep);
  font-size:12px;letter-spacing:.12em;font-weight:500;
}
.badge-tag.is-jade{background:rgba(46,91,84,.10);color:var(--jade);}
.page-hero h1{
  font-size:clamp(34px,4.6vw,58px);line-height:1.14;font-weight:900;
  letter-spacing:-.015em;margin-bottom:22px;max-width:15em;
}
.page-hero .lede{font-size:17px;color:var(--ink-700);max-width:34em;line-height:1.8;margin-bottom:30px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-figure{
  position:relative;border:1px solid var(--line-strong);border-radius:var(--r-lg);
  overflow:hidden;background:var(--white);box-shadow:var(--sh-2);aspect-ratio:4/5;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.hero-figure:hover img{transform:scale(1.03);}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,17,26,0) 55%,rgba(20,17,26,.55) 100%);
}
.hero-figure .fig-badge{
  position:absolute;right:14px;bottom:14px;z-index:2;
  background:var(--accent);color:#fff;font-size:12px;letter-spacing:.14em;
  padding:6px 12px;border-radius:var(--r-sm);
}
.hero-figure .fig-cap{
  position:absolute;left:16px;bottom:16px;z-index:2;color:#fff;
  font-size:12.5px;letter-spacing:.08em;opacity:.9;padding-right:110px;
}
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:44px;border-top:1px solid var(--line-strong);padding-top:26px;
}
.stat-item{padding-right:20px;border-right:1px solid var(--line-strong);}
.stat-item:last-child{border-right:0;padding-right:0;}
.stat-num{font-family:var(--serif);font-size:clamp(28px,3vw,36px);font-weight:700;line-height:1.1;color:var(--ink-900);letter-spacing:.04em;}
.stat-num em{font-style:normal;color:var(--accent);}
.stat-label{font-size:12.5px;color:var(--ink-500);letter-spacing:.12em;margin-top:8px;}

/* ---------- 锚点条 ---------- */
.anchor-bar{background:var(--paper);border-bottom:1px solid var(--line);overflow-x:auto;-webkit-overflow-scrolling:touch;}
.anchor-inner{display:flex;gap:34px;padding:0 32px;max-width:var(--wrap);margin:0 auto;min-width:max-content;}
.anchor-inner a{
  position:relative;display:inline-block;padding:20px 0;font-size:14.5px;
  color:var(--ink-500);white-space:nowrap;
}
.anchor-inner a::after{
  content:"";position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:var(--accent);transition:width .28s var(--ease);
}
.anchor-inner a:hover{color:var(--ink-900);}
.anchor-inner a:hover::after{width:100%;}
.anchor-inner a.is-current{color:var(--ink-900);font-weight:700;}
.anchor-inner a.is-current::after{width:100%;}

/* ---------- 图文交错 ---------- */
.zig{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;
  align-items:center;padding:64px 0;border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(16px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.zig.in{opacity:1;transform:none;}
.zig:first-child{padding-top:8px;}
.zig:last-child{border-bottom:0;padding-bottom:0;}
.zig-media{
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  background:var(--white);box-shadow:var(--sh-1);
  aspect-ratio:4/3;position:relative;
}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.zig-media:hover img{transform:scale(1.03);}
.zig-media::after{
  content:"";position:absolute;inset:0;background:rgba(20,17,26,0);
  transition:background .3s var(--ease);
}
.zig-media:hover::after{background:rgba(20,17,26,.10);}
.zig--flip .zig-media{order:2;}
.zig-num{
  font-family:var(--serif);font-size:13px;letter-spacing:.2em;color:var(--accent);
  display:block;margin-bottom:14px;
}
.zig-body h3{font-size:clamp(22px,2.4vw,26px);line-height:1.4;margin-bottom:16px;}
.zig-body p{font-size:16px;color:var(--ink-700);max-width:34em;margin-bottom:1.1em;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.tag-row span{
  font-size:12.5px;letter-spacing:.06em;color:var(--ink-700);
  background:var(--paper-2);border:1px solid var(--line);
  padding:5px 12px;border-radius:999px;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.tag-row span:hover{background:var(--accent-soft);color:var(--accent-deep);border-color:rgba(180,18,63,.25);}

/* ---------- 索引列表 ---------- */
.index-list{border-top:1px solid var(--line-strong);}
.index-row{
  display:grid;grid-template-columns:78px 1fr 34px;gap:26px;align-items:center;
  padding:26px 14px;border-bottom:1px solid var(--line);
  transition:background .26s var(--ease),padding-left .26s var(--ease);
}
.index-row:hover{background:var(--paper-2);padding-left:22px;}
.index-row .idx{
  font-family:var(--serif);font-size:32px;font-weight:700;line-height:1;
  color:var(--accent);letter-spacing:.04em;
}
.index-row .idx-title{
  font-family:var(--serif);font-size:20px;font-weight:700;line-height:1.4;
  margin-bottom:6px;position:relative;display:inline-block;
}
.index-row .idx-title::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--ink-900);transition:width .3s var(--ease);
}
.index-row:hover .idx-title::after{width:100%;}
.index-row .idx-desc{font-size:14.5px;color:var(--ink-500);margin:0;line-height:1.7;}
.index-row .idx-arrow{
  font-size:18px;color:var(--ink-500);justify-self:end;
  transition:transform .26s var(--ease),color .26s var(--ease);
}
.index-row:hover .idx-arrow{transform:translateX(4px);color:var(--accent);}

/* ---------- 适用场景 ---------- */
.use-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:stretch;}
.use-dark{
  background:var(--ink-900);color:var(--paper);border-radius:var(--r-lg);
  padding:52px 46px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;
}
.use-dark::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(247,244,238,.06) 0 1px,transparent 1px 22px);
  pointer-events:none;
}
.use-dark h3{color:var(--paper);font-size:clamp(24px,2.6vw,30px);line-height:1.35;margin-bottom:18px;position:relative;z-index:2;}
.use-dark p{color:rgba(247,244,238,.76);font-size:15.5px;margin-bottom:0;position:relative;z-index:2;max-width:30em;}
.use-dark .use-num{
  font-family:var(--serif);font-size:13px;letter-spacing:.22em;
  color:rgba(247,244,238,.55);margin-bottom:24px;position:relative;z-index:2;
}
.use-stack{display:grid;gap:24px;}
.use-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px 34px;box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.use-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.use-card h4{font-size:19px;line-height:1.4;margin-bottom:10px;}
.use-card p{font-size:14.5px;color:var(--ink-500);margin:0;line-height:1.75;}
.use-card .mini-tag{
  display:inline-block;font-size:11.5px;letter-spacing:.16em;color:var(--jade);
  border:1px solid rgba(46,91,84,.28);background:rgba(46,91,84,.06);
  padding:3px 10px;border-radius:var(--r-sm);margin-bottom:14px;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line-strong);max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:26px 4px;background:none;border:0;text-align:left;
  font-family:var(--sans);font-size:17.5px;font-weight:600;color:var(--ink-900);
  transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-pm{position:relative;width:18px;height:18px;flex-shrink:0;}
.faq-pm::before,.faq-pm::after{
  content:"";position:absolute;background:var(--accent);
  transition:transform .28s var(--ease),opacity .28s var(--ease);
}
.faq-pm::before{left:0;top:8px;width:18px;height:1.6px;}
.faq-pm::after{left:8px;top:0;width:1.6px;height:18px;}
.faq-item.open .faq-pm::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a p{
  max-width:640px;font-size:15.5px;line-height:1.8;color:var(--ink-700);
  padding:0 4px 28px;margin:0;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--ink-900);border-radius:var(--r-lg);
  padding:56px 52px;display:flex;align-items:center;justify-content:space-between;
  gap:40px;position:relative;overflow:hidden;color:var(--paper);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(247,244,238,.05) 0 1px,transparent 1px 24px);
  pointer-events:none;
}
.cta-band .cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-band h2{color:var(--paper);font-size:clamp(26px,3vw,36px);line-height:1.3;margin-bottom:14px;}
.cta-band p{color:rgba(247,244,238,.72);font-size:15px;margin:0;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#EDE9E2;padding:76px 0 30px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:44px;padding-bottom:54px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand-main{font-family:var(--serif);font-size:18px;font-weight:700;letter-spacing:.01em;color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(237,233,226,.66);max-width:30em;margin-bottom:16px;}
.footer-domain{font-size:12.5px;letter-spacing:.14em;color:rgba(237,233,226,.42);margin:0;}
.footer-col h4{
  font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:.16em;
  color:rgba(237,233,226,.55);margin-bottom:20px;text-transform:uppercase;
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{
  font-size:14.5px;color:rgba(237,233,226,.86);
  transition:color .24s var(--ease),transform .24s var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(237,233,226,.14);padding-top:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(237,233,226,.5);
}
.footer-bottom a{color:rgba(237,233,226,.7);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- 移动菜单 ---------- */
.offcanvas.mobile-nav{background:var(--paper);width:min(86vw,360px);}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:22px 24px;}
.mobile-nav .offcanvas-title{font-family:var(--serif);font-size:17px;letter-spacing:.06em;}
.mobile-nav .btn-close{opacity:.6;}
.mobile-nav .btn-close:hover{opacity:1;}
.mobile-nav .offcanvas-body{padding:20px 24px 34px;display:flex;flex-direction:column;gap:2px;}
.mobile-nav .m-link{
  display:block;font-family:var(--serif);font-size:18px;font-weight:600;
  padding:15px 0;border-bottom:1px solid var(--line);color:var(--ink-900);
}
.mobile-nav .m-link:hover,.mobile-nav .m-link.active{color:var(--accent);}
.mobile-nav .m-cta{margin-top:26px;width:100%;}
.mobile-nav .m-note{font-size:12.5px;color:var(--ink-500);margin-top:20px;line-height:1.7;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-links{gap:18px;}
  .header-text-link{display:none;}
}
@media (max-width:991px){
  .wrap{padding:0 24px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-solid{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{aspect-ratio:16/10;max-width:100%;}
  .page-hero h1{max-width:100%;}
  .zig{grid-template-columns:1fr;gap:30px;padding:48px 0;}
  .zig--flip .zig-media{order:0;}
  .use-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px 34px;}
  .section{padding:72px 0;}
  .stat-bar{grid-template-columns:repeat(2,1fr);gap:24px 0;}
  .stat-item:nth-child(2){border-right:0;}
}
@media (max-width:575px){
  body{font-size:16px;}
  .wrap{padding:0 20px;}
  .header-inner{min-height:70px;gap:14px;}
  .brand-main{font-size:16.5px;}
  .brand-sub{font-size:10px;letter-spacing:.18em;}
  .page-hero-inner{padding:36px 0 52px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-solid,.hero-actions .btn-ghost{width:100%;}
  .stat-bar{grid-template-columns:1fr 1fr;}
  .stat-num{font-size:26px;}
  .index-row{grid-template-columns:52px 1fr 24px;gap:14px;padding:20px 6px;}
  .index-row .idx{font-size:24px;}
  .index-row .idx-title{font-size:17.5px;}
  .index-row:hover{padding-left:6px;}
  .use-dark{padding:36px 26px;}
  .use-card{padding:26px 22px;}
  .cta-band{padding:36px 24px;}
  .cta-band .cta-actions{width:100%;flex-direction:column;}
  .cta-band .cta-actions .btn-solid,.cta-band .cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .section{padding:56px 0;}
  .faq-q{font-size:16px;padding:22px 2px;}
  .anchor-inner{gap:24px;padding:0 20px;}
  .site-footer{margin-top:64px;padding:56px 0 26px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .zig{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --ink-900:#14111A;
  --ink-800:#1D1926;
  --ink-700:#2B2632;
  --ink-500:#6B6472;
  --ink-300:#A9A2B3;
  --paper:#F7F4EE;
  --paper-2:#EFEAE1;
  --accent:#B4123F;
  --accent-dark:#8E0E32;
  --accent-soft:#F3E2E6;
  --jade:#2E5B54;
  --line:rgba(20,17,26,.10);
  --line-strong:rgba(20,17,26,.18);
  --line-light:rgba(247,244,238,.16);
  --sh-1:0 1px 2px rgba(20,17,26,.05);
  --sh-2:0 10px 30px -16px rgba(20,17,26,.22);
  --r-1:4px;
  --r-2:8px;
  --r-3:14px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC",Songti SC,SimSun,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink-900);text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-.01em;color:var(--ink-900);}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}

.wrap{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-1);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1;
  cursor:pointer;
  transition:background .26s var(--ease),color .26s var(--ease),transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:var(--sh-1);
  position:relative;
  overflow:hidden;
}
.btn-primary::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--ink-900);
  transform:translateY(2px);
  transition:transform .26s var(--ease);
}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:hover::after{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--ink-900);
  border-color:var(--line-strong);
}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);border-color:var(--ink-900);}
.btn-light{background:var(--paper);color:var(--ink-900);border-color:var(--paper);}
.btn-light:hover{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-outline-light{background:transparent;color:var(--paper);border-color:var(--line-light);}
.btn-outline-light:hover{background:var(--paper);color:var(--ink-900);border-color:var(--paper);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(247,244,238,.96);backdrop-filter:blur(8px);}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:82px;
  transition:height .3s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:70px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:8px;height:8px;
  background:var(--accent);
  display:block;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;}
.brand-sub{font-size:11px;letter-spacing:.2em;color:var(--ink-500);margin-top:3px;}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--ink-700);
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--accent);
  transition:width .28s var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after{width:100%;}
.nav-links a.active{color:var(--ink-900);font-weight:500;}
.nav-actions{display:flex;align-items:center;gap:18px;flex:0 0 auto;}
.nav-text-link{font-size:14px;color:var(--ink-500);white-space:nowrap;}
.nav-text-link:hover{color:var(--accent);}
.nav-burger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-1);
  background:transparent;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  cursor:pointer;
}
.nav-burger span{display:block;width:18px;height:1.5px;background:var(--ink-900);transition:background .2s var(--ease);}
.nav-burger:hover{border-color:var(--ink-900);}

.offcanvas.mobile-menu{background:var(--paper);color:var(--ink-900);width:min(88vw,380px);border-right:1px solid var(--line);}
.mobile-menu .offcanvas-header{border-bottom:1px solid var(--line);padding:20px 22px;}
.mobile-menu .offcanvas-body{padding:22px;display:flex;flex-direction:column;gap:4px;}
.mobile-menu .m-link{
  display:block;
  font-family:var(--serif);
  font-size:18px;
  font-weight:700;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.mobile-menu .m-link.active{color:var(--accent);}
.mobile-menu .btn{margin-top:22px;width:100%;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  background:var(--ink-900);
  color:var(--paper);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.32;
  filter:saturate(.7);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(103deg,rgba(20,17,26,.96) 0%,rgba(20,17,26,.86) 46%,rgba(20,17,26,.58) 100%);
}
.page-hero .wrap{position:relative;z-index:2;padding-top:56px;padding-bottom:64px;}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:var(--ink-300);
  margin-bottom:28px;
}
.crumbs a{color:var(--ink-300);}
.crumbs a:hover{color:#fff;}
.crumbs .sep{opacity:.5;}
.crumbs .current{color:var(--paper);}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);
  gap:52px;
  align-items:end;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px;}
.badge-chip{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(180,18,63,.20);
  border:1px solid rgba(180,18,63,.42);
  color:#F6D8E0;
  font-size:12px;
  letter-spacing:.16em;
}
.badge-chip.jade{
  background:rgba(46,91,84,.26);
  border-color:rgba(46,91,84,.55);
  color:#BFD8D2;
}
.page-hero h1{
  font-size:clamp(34px,4.4vw,60px);
  line-height:1.14;
  color:var(--paper);
  font-weight:900;
  margin-bottom:22px;
}
.page-hero h1 em{font-style:normal;color:#F2B9C8;display:block;}
.hero-lead{
  max-width:620px;
  font-size:17px;
  line-height:1.85;
  color:rgba(247,244,238,.78);
  margin-bottom:30px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;}
.hero-figure{
  position:relative;
  border:1px solid rgba(247,244,238,.22);
  border-radius:var(--r-3);
  overflow:hidden;
  background:var(--ink-800);
  box-shadow:0 24px 60px -32px rgba(0,0,0,.9);
}
.hero-figure img{width:100%;aspect-ratio:4/5;object-fit:cover;opacity:.94;}
.hero-figure figcaption{
  position:absolute;
  left:14px;right:14px;bottom:14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 14px;
  border-radius:var(--r-2);
  background:rgba(20,17,26,.78);
  border:1px solid rgba(247,244,238,.16);
  font-size:12.5px;
  color:rgba(247,244,238,.88);
  letter-spacing:.04em;
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:82px;
  z-index:1020;
  transition:top .3s var(--ease);
}
.site-header.is-scrolled ~ .anchor-bar{top:70px;}
.anchor-inner{
  display:flex;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  padding:0;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  position:relative;
  flex:0 0 auto;
  padding:17px 16px;
  font-size:14px;
  color:var(--ink-500);
  white-space:nowrap;
  transition:color .24s var(--ease);
}
.anchor-inner a::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:0;
  height:2px;
  background:transparent;
  transition:background .24s var(--ease);
}
.anchor-inner a:hover{color:var(--ink-900);}
.anchor-inner a.current{color:var(--ink-900);font-weight:500;}
.anchor-inner a.current::after{background:var(--accent);}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section.alt{background:var(--paper-2);}
.section.dark{background:var(--ink-900);color:rgba(247,244,238,.82);}
.section.dark h2,.section.dark h3{color:var(--paper);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-label{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12.5px;
  letter-spacing:.2em;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:16px;
}
.sec-label::before{content:"";width:22px;height:2px;background:var(--accent);display:block;}
.section.dark .sec-label{color:#F2B9C8;}
.section.dark .sec-label::before{background:#F2B9C8;}
.sec-head h2{
  font-size:clamp(26px,3.1vw,38px);
  line-height:1.28;
  margin-bottom:18px;
}
.sec-head p{color:var(--ink-500);font-size:16px;max-width:640px;margin-bottom:0;}
.section.dark .sec-head p{color:rgba(247,244,238,.68);}

/* ---------- 标签条 ---------- */
.pill-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  padding:22px 0 0;
  border-top:1px solid var(--line);
}
.pill{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:var(--paper);
  color:var(--ink-700);
  font-size:13.5px;
  letter-spacing:.04em;
  transition:all .26s var(--ease);
}
.pill:hover{
  background:var(--accent-soft);
  border-color:rgba(180,18,63,.4);
  color:var(--accent-dark);
  transform:translateY(-2px);
}
.pill .num{
  font-family:var(--serif);
  font-size:12px;
  color:var(--ink-500);
  margin-right:8px;
  letter-spacing:.04em;
}
.pill:hover .num{color:var(--accent);}

/* ---------- 瀑布卡片 ---------- */
.masonry{
  column-count:3;
  column-gap:24px;
  margin-top:40px;
}
.story-card{
  break-inside:avoid;
  display:inline-block;
  width:100%;
  margin-bottom:24px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-3);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.story-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.story-card .card-media{position:relative;overflow:hidden;background:var(--ink-800);}
.story-card .card-media img{width:100%;object-fit:cover;transition:transform .5s var(--ease),opacity .4s var(--ease);}
.story-card:hover .card-media img{transform:scale(1.03);opacity:.86;}
.story-card .card-media.tall img{aspect-ratio:3/4;}
.story-card .card-media.wide img{aspect-ratio:16/9;}
.story-card .card-media.mid img{aspect-ratio:4/3;}
.card-index{
  position:absolute;
  left:14px;top:12px;
  font-family:var(--serif);
  font-size:24px;
  font-weight:700;
  color:#fff;
  letter-spacing:.04em;
  text-shadow:0 2px 12px rgba(0,0,0,.55);
}
.card-badge{
  position:absolute;
  right:12px;top:12px;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-2);
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-size:12px;
  letter-spacing:.06em;
}
.card-body{padding:22px 22px 24px;}
.card-body h3{
  font-size:19px;
  line-height:1.45;
  margin-bottom:10px;
}
.card-body p{
  font-size:14.5px;
  line-height:1.8;
  color:var(--ink-500);
  margin-bottom:16px;
}
.card-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  font-size:12.5px;
  color:var(--ink-500);
  letter-spacing:.04em;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.card-meta .tag-jade{
  color:var(--jade);
  border:1px solid rgba(46,91,84,.28);
  background:rgba(46,91,84,.07);
  border-radius:var(--r-1);
  padding:1px 8px;
  font-size:12px;
}

/* ---------- 数据面板 ---------- */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  background:rgba(247,244,238,.14);
  border:1px solid rgba(247,244,238,.14);
  border-radius:var(--r-3);
  overflow:hidden;
  margin-top:36px;
}
.stat-cell{
  background:var(--ink-800);
  padding:30px 26px 28px;
  transition:background .3s var(--ease);
}
.stat-cell:hover{background:#241F2E;}
.stat-num{
  font-family:var(--serif);
  font-size:38px;
  font-weight:700;
  line-height:1;
  color:var(--paper);
  letter-spacing:.02em;
  display:block;
  margin-bottom:12px;
}
.stat-num small{font-size:15px;font-weight:400;color:#F2B9C8;margin-left:4px;}
.stat-label{font-size:13px;color:rgba(247,244,238,.62);letter-spacing:.08em;display:block;margin-bottom:6px;}
.stat-desc{font-size:13.5px;color:rgba(247,244,238,.48);line-height:1.7;margin:0;}

/* ---------- 说明分栏 ---------- */
.note-split{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-3);
  overflow:hidden;
  margin-top:40px;
}
.note-item{
  background:var(--paper);
  padding:32px 30px;
  transition:background .3s var(--ease);
}
.note-item:hover{background:var(--paper-2);}
.note-item .note-no{
  font-family:var(--serif);
  font-size:15px;
  letter-spacing:.08em;
  color:var(--accent);
  display:block;
  margin-bottom:14px;
}
.note-item h3{font-size:21px;line-height:1.4;margin-bottom:12px;}
.note-item p{font-size:15px;color:var(--ink-500);margin-bottom:0;}

/* ---------- FAQ ---------- */
.faq-list{margin-top:12px;border-top:1px solid var(--line-strong);}
.faq-item{border-bottom:1px solid var(--line-strong);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:24px;
  padding:26px 0;
  font-family:var(--sans);
  font-size:17.5px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.6;
  transition:color .24s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-sign{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
  margin-top:4px;
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  background:var(--accent);
  transition:transform .28s var(--ease),opacity .28s var(--ease);
}
.faq-sign::before{left:0;top:9px;width:18px;height:1.6px;}
.faq-sign::after{left:8.2px;top:0;width:1.6px;height:18px;}
.faq-item[open] .faq-sign::after{transform:scaleY(0);opacity:0;}
.faq-answer{
  max-width:660px;
  padding:0 0 28px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--ink-500);
}
.faq-answer p{margin-bottom:.9em;}
.faq-answer p:last-child{margin-bottom:0;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  background:var(--ink-900);
  border-radius:var(--r-3);
  padding:52px 48px;
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
  overflow:hidden;
  color:rgba(247,244,238,.72);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(247,244,238,.06) 0 1px,transparent 1px 16px);
  opacity:.9;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{
  color:var(--paper);
  font-size:clamp(26px,3vw,38px);
  line-height:1.3;
  margin-bottom:14px;
}
.cta-band p{font-size:15.5px;margin-bottom:0;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(247,244,238,.74);padding:76px 0 0;margin-top:0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:44px;
  padding-bottom:56px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.footer-brand .brand-mark{width:8px;height:8px;background:var(--accent);display:block;}
.footer-brand-main{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--paper);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(247,244,238,.60);max-width:320px;margin-bottom:16px;}
.footer-domain{font-size:13px;letter-spacing:.08em;color:rgba(247,244,238,.42);margin:0;}
.footer-col h4{
  font-family:var(--sans);
  font-size:13px;
  font-weight:500;
  letter-spacing:.18em;
  color:rgba(247,244,238,.46);
  margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{
  font-size:14.5px;
  color:rgba(247,244,238,.78);
  transition:color .24s var(--ease),transform .24s var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:#F2B9C8;transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(247,244,238,.14);
  padding:24px 0 30px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(247,244,238,.44);
  letter-spacing:.02em;
}
.footer-bottom a{color:rgba(247,244,238,.62);}
.footer-bottom a:hover{color:#F2B9C8;}

/* ---------- 入场动效 ---------- */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.fade-up.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .masonry{column-count:2;}
  .nav-links{gap:18px;}
  .nav-links a{font-size:14px;}
}
@media (max-width:991px){
  .wrap{padding:0 24px;}
  .nav-links{display:none;}
  .nav-actions .btn-sm,.nav-actions .nav-text-link{display:none;}
  .nav-burger{display:flex;}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .hero-figure{max-width:440px;}
  .hero-figure img{aspect-ratio:16/10;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .note-split{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:40px 32px;}
  .cta-actions{justify-content:flex-start;}
  .section{padding:72px 0;}
  .anchor-bar{top:70px;}
}
@media (max-width:767px){
  .masonry{column-count:1;}
  .page-hero .wrap{padding-top:40px;padding-bottom:48px;}
  .hero-lead{font-size:16px;}
  .sec-head{margin-bottom:32px;}
}
@media (max-width:575px){
  .wrap{padding:0 20px;}
  body{font-size:16px;}
  .nav-inner{height:72px;}
  .brand-main{font-size:16px;}
  .brand-sub{font-size:10px;letter-spacing:.16em;}
  .anchor-bar{top:72px;}
  .anchor-inner a{padding:15px 12px;font-size:13.5px;}
  .hero-btns .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .stat-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .footer-bottom{flex-direction:column;}
  .section{padding:56px 0;}
  .note-item{padding:26px 22px;}
  .cta-band{padding:32px 22px;border-radius:var(--r-2);}
  .faq-item summary{font-size:16px;padding:22px 0;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .fade-up{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink-900:#14111A;
  --ink-800:#1B1724;
  --ink-700:#2B2632;
  --ink-500:#6B6472;
  --ink-400:#8C8595;
  --paper:#F7F4EE;
  --paper-2:#EFEAE1;
  --paper-3:#E6E0D5;
  --accent:#B4123F;
  --accent-deep:#8E0E32;
  --accent-soft:#F3E2E6;
  --jade:#2E5B54;
  --jade-soft:#E3EDEA;
  --line:rgba(20,17,26,.10);
  --line-strong:rgba(20,17,26,.18);
  --line-dark:rgba(247,244,238,.16);
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,17,26,.05);
  --sh-2:0 10px 30px -16px rgba(20,17,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:280ms var(--ease);
  --nav-h:78px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Songti,serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t)}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:-.01em;margin:0;line-height:1.25;color:var(--ink-900)}
p{margin:0 0 1.2em;max-width:38em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
::selection{background:var(--accent-soft);color:var(--ink-900)}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),height var(--t);
}
.site-header .bar{
  display:flex;align-items:center;gap:28px;
  height:var(--nav-h);
  transition:height var(--t);
}
.site-header.is-stuck{box-shadow:var(--sh-1);--nav-h:66px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:8px;height:32px;background:var(--accent);border-radius:2px;flex:0 0 auto;
  transition:height var(--t);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-main{font-family:var(--serif);font-size:18px;font-weight:700;letter-spacing:0;color:var(--ink-900)}
.brand-sub{font-size:11px;letter-spacing:.2em;color:var(--ink-500);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);
  transition:width var(--t);
}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--ink-900);font-weight:500}
.nav-actions{display:flex;align-items:center;gap:18px;margin-left:8px}
.nav-actions .text-link{font-size:14px;color:var(--ink-500);border-bottom:1px solid var(--line-strong);padding-bottom:2px}
.nav-actions .text-link:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- 按钮 ---------- */
.btn-solid,.btn-line,.btn-paper{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.06em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  position:relative;overflow:hidden;
}
.btn-solid{background:var(--accent);color:#fff}
.btn-solid::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--ink-900);
  transform:translateY(3px);transition:transform var(--t);
}
.btn-solid:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-solid:hover::after{transform:translateY(0)}
.btn-line{background:var(--paper);color:var(--ink-900);border-color:var(--line-strong)}
.btn-line:hover{background:var(--ink-900);color:var(--paper);border-color:var(--ink-900)}
.btn-paper{background:var(--paper);color:var(--ink-900)}
.btn-paper:hover{background:var(--accent);color:#fff}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--accent-soft);color:var(--accent-deep);
  font-size:12px;letter-spacing:.16em;font-weight:500;
}
.tag--jade{background:var(--jade-soft);color:var(--jade)}
.tag--ghost{background:transparent;border:1px solid var(--line-strong);color:var(--ink-500);letter-spacing:.12em}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.2em;color:var(--ink-500);text-transform:none;
}
.kicker::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:var(--paper);
  padding:88px 0 72px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.26;filter:saturate(.5) contrast(.95);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(115deg,rgba(20,17,26,.94) 0%,rgba(20,17,26,.82) 46%,rgba(20,17,26,.62) 100%),
    repeating-linear-gradient(115deg,rgba(247,244,238,.05) 0 1px,transparent 1px 9px);
  opacity:1;
}
.hero .wrap{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(247,244,238,.66);margin-bottom:26px;flex-wrap:wrap}
.crumb a{color:rgba(247,244,238,.8)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--paper)}
.hero h1{
  color:var(--paper);
  font-size:clamp(34px,4.4vw,56px);
  line-height:1.12;
  font-weight:900;
  letter-spacing:-.015em;
  margin:18px 0 22px;
}
.hero h1 .accent{color:#F2C7D2}
.hero-lead{font-size:17px;color:rgba(247,244,238,.82);max-width:34em;margin-bottom:34px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.badge-line{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid rgba(247,244,238,.28);color:rgba(247,244,238,.86);
  font-size:12px;letter-spacing:.16em;
}
.badge-line--accent{background:var(--accent);border-color:var(--accent);color:#fff}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;border-top:1px solid var(--line-dark);padding-top:26px;max-width:560px}
.stat-num{font-family:var(--serif);font-size:clamp(28px,3vw,38px);line-height:1;color:var(--paper);letter-spacing:.04em}
.stat-label{font-size:12px;letter-spacing:.16em;color:rgba(247,244,238,.62);margin-top:8px;display:block}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(247,244,238,.18)}
.hero-figure img{width:100%;aspect-ratio:4/5;object-fit:cover}
.hero-figure .fig-badge{
  position:absolute;right:16px;bottom:16px;
  background:var(--paper);color:var(--ink-900);
  font-size:12px;letter-spacing:.14em;font-weight:600;
  padding:7px 14px;border-radius:var(--r-sm);
}
.hero-figure .fig-cap{
  position:absolute;left:16px;top:16px;
  font-size:12px;letter-spacing:.16em;color:#fff;
  background:rgba(20,17,26,.62);padding:6px 12px;border-radius:var(--r-pill);
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:1020;
  background:var(--paper);border-bottom:1px solid var(--line);
  transition:top var(--t);
}
.anchor-inner{display:flex;gap:30px;overflow-x:auto;padding:0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{
  position:relative;flex:0 0 auto;padding:18px 2px;font-size:14px;color:var(--ink-500);white-space:nowrap;
}
.anchor-inner a::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:transparent;transition:background-color var(--t)}
.anchor-inner a:hover{color:var(--ink-900)}
.anchor-inner a.current{color:var(--ink-900);font-weight:500}
.anchor-inner a.current::after{background:var(--accent)}

/* ---------- 通用板块头 ---------- */
.sec-head{max-width:760px;margin-bottom:56px}
.sec-head h2{font-size:clamp(26px,3vw,38px);margin:16px 0 18px}
.sec-head p{color:var(--ink-500);font-size:16px}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;flex-wrap:wrap}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding:8px 0}
.timeline::before{
  content:"";position:absolute;top:0;bottom:0;left:50%;width:1px;background:var(--line-strong);
  transform:translateX(-.5px);
}
.tl-item{
  position:relative;display:grid;grid-template-columns:1fr 96px 1fr;
  align-items:start;margin-bottom:44px;
}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  grid-column:2;justify-self:center;margin-top:22px;
  width:15px;height:15px;border-radius:50%;
  background:var(--paper);border:2px solid var(--ink-900);
  position:relative;z-index:2;transition:background-color var(--t),border-color var(--t);
}
.tl-item:hover .tl-node{background:var(--accent);border-color:var(--accent)}
.tl-card{
  grid-column:1;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:30px 32px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.tl-item.is-right .tl-card{grid-column:3}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.tl-num{
  display:inline-block;font-family:var(--serif);font-size:20px;letter-spacing:.04em;color:var(--accent);
  margin-bottom:10px;
}
.tl-card h3{font-size:21px;margin-bottom:12px}
.tl-card p{color:var(--ink-500);font-size:15.5px;max-width:34em}
.tl-meta{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-size:13px;color:var(--jade);letter-spacing:.04em;
  border-top:1px solid var(--line);padding-top:14px;width:100%;
}
.tl-meta::before{content:"";width:6px;height:6px;background:var(--jade);border-radius:50%;flex:0 0 auto}

/* ---------- 关系分组卡 ---------- */
.group-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.group-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.group-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.group-card .thumb{position:relative;overflow:hidden}
.group-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 480ms var(--ease)}
.group-card:hover .thumb img{transform:scale(1.03)}
.group-card .thumb::after{
  content:"";position:absolute;inset:0;background:rgba(20,17,26,0);transition:background-color var(--t);
}
.group-card:hover .thumb::after{background:rgba(20,17,26,.18)}
.group-card .body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1}
.group-card h3{font-size:20px;margin-bottom:12px}
.group-card p{font-size:15px;color:var(--ink-500);margin-bottom:22px}
.spec-list{margin-top:auto;border-top:1px solid var(--line);padding-top:16px;display:grid;gap:10px}
.spec-row{display:flex;align-items:center;justify-content:space-between;font-size:13.5px}
.spec-row dt{color:var(--ink-500);letter-spacing:.04em}
.spec-row dd{margin:0;font-family:var(--serif);color:var(--ink-900);letter-spacing:.02em}
.spec-row dd.jade{color:var(--jade)}

/* ---------- 速查列表 ---------- */
.rule-list{border-top:1px solid var(--line-strong)}
.rule-item{
  display:grid;grid-template-columns:88px minmax(0,1fr) 200px;
  gap:32px;align-items:center;
  padding:28px 12px;border-bottom:1px solid var(--line);
  transition:background-color var(--t),padding-left var(--t);
}
.rule-item:hover{background:var(--paper-2);padding-left:20px}
.rule-idx{font-family:var(--serif);font-size:34px;line-height:1;color:var(--ink-400);letter-spacing:.04em}
.rule-item:hover .rule-idx{color:var(--accent)}
.rule-main h3{font-size:19px;margin-bottom:6px}
.rule-main p{font-size:15px;color:var(--ink-500);max-width:44em;margin:0}
.rule-tail{justify-self:end}

/* ---------- 使用路径 ---------- */
.path-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line-strong)}
.path-cell{
  padding:36px 30px 40px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);
  transition:background-color var(--t);
}
.path-cell:nth-child(3n){border-right:none}
.path-cell:hover{background:var(--paper-2)}
.path-cell .num{font-family:var(--serif);font-size:14px;letter-spacing:.16em;color:var(--accent);display:block;margin-bottom:16px}
.path-cell h3{font-size:19px;margin-bottom:12px}
.path-cell p{font-size:15px;color:var(--ink-500);margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:transparent;border:0;padding:26px 4px;text-align:left;cursor:pointer;
  font-family:var(--serif);font-size:18px;font-weight:600;color:var(--ink-900);
  transition:color var(--t);
}
.faq-q:hover{color:var(--accent)}
.faq-sign{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--accent);transition:transform var(--t),opacity var(--t);
}
.faq-sign::before{left:0;right:0;top:8px;height:2px}
.faq-sign::after{top:0;bottom:0;left:8px;width:2px}
.faq-q[aria-expanded="true"] .faq-sign::after{transform:scaleY(0);opacity:0}
.faq-a{max-width:640px;padding:0 4px 28px}
.faq-a p{font-size:15.5px;color:var(--ink-500);line-height:1.8}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:var(--paper);
  border-radius:var(--r-lg);padding:56px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(247,244,238,.06) 0 1px,transparent 1px 12px);
  opacity:.6;pointer-events:none;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{color:var(--paper);font-size:clamp(24px,2.8vw,34px);margin-bottom:14px;max-width:18em}
.cta-band p{color:rgba(247,244,238,.72);font-size:15.5px;margin:0;max-width:32em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--paper);padding:76px 0 34px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid var(--line-dark)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand-main{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--paper)}
.footer-desc{font-size:14.5px;color:rgba(247,244,238,.66);line-height:1.8;max-width:26em;margin-bottom:16px}
.footer-domain{font-size:12.5px;letter-spacing:.14em;color:rgba(247,244,238,.42);margin:0}
.footer-col h4{font-family:var(--sans);font-size:13px;letter-spacing:.16em;color:rgba(247,244,238,.5);font-weight:500;margin-bottom:20px}
.footer-links{display:grid;gap:12px}
.footer-links a{font-size:14.5px;color:rgba(247,244,238,.82);transition:color var(--t),transform var(--t);display:inline-block}
.footer-links a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;
  padding-top:26px;font-size:13px;color:rgba(247,244,238,.5);
}
.footer-bottom a{color:rgba(247,244,238,.72);border-bottom:1px solid var(--line-dark);padding-bottom:1px}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- 抽屉菜单 ---------- */
.site-drawer{background:var(--paper);color:var(--ink-900);width:min(88vw,380px)}
.site-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:22px 24px}
.site-drawer .offcanvas-title{font-family:var(--serif);font-size:16px;font-weight:700;line-height:1.4}
.drawer-close{
  background:transparent;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  width:36px;height:36px;font-size:20px;line-height:1;color:var(--ink-700);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color var(--t),color var(--t);
}
.drawer-close:hover{background:var(--ink-900);color:var(--paper)}
.drawer-nav{display:grid;gap:2px;margin-bottom:26px}
.drawer-nav a{
  display:block;padding:14px 8px;font-size:18px;font-family:var(--serif);font-weight:600;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--accent)}
.drawer-nav a:hover{color:var(--accent)}
.drawer-cta{display:grid;gap:12px}
.menu-btn{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line-strong);background:transparent;color:var(--ink-900);
  margin-left:auto;transition:background-color var(--t),color var(--t);
}
.menu-btn:hover{background:var(--ink-900);color:var(--paper)}
.menu-btn span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}

/* ---------- 入场动效 ---------- */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity 640ms var(--ease),transform 640ms var(--ease)}
.fade-up.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:40px}
  .cta-band{padding:44px 40px}
  .rule-item{grid-template-columns:64px minmax(0,1fr) 168px;gap:24px}
}
@media (max-width:991px){
  .section{padding:76px 0}
  .wrap{padding:0 24px}
  .nav-links,.nav-actions{display:none}
  .menu-btn{display:inline-flex}
  .hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-figure{order:2;max-width:440px}
  .hero-stats{max-width:none}
  .group-grid{grid-template-columns:1fr 1fr}
  .path-grid{grid-template-columns:1fr 1fr}
  .path-cell:nth-child(3n){border-right:1px solid var(--line)}
  .path-cell:nth-child(2n){border-right:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .rule-item{grid-template-columns:56px minmax(0,1fr);gap:20px}
  .rule-tail{grid-column:2;justify-self:start;margin-top:6px}
}
@media (max-width:767px){
  .timeline::before{left:8px;transform:none}
  .tl-item{grid-template-columns:20px minmax(0,1fr);gap:16px;margin-bottom:32px}
  .tl-node{grid-column:1;justify-self:start;margin-top:26px;width:13px;height:13px;margin-left:1px}
  .tl-item.is-right .tl-card,.tl-item.is-left .tl-card{grid-column:2}
  .tl-card{padding:24px 22px}
  .group-grid{grid-template-columns:1fr}
  .path-grid{grid-template-columns:1fr}
  .path-cell{border-right:none;padding:28px 20px 32px}
  .cta-band{padding:36px 24px;border-radius:var(--r-md)}
  .cta-actions{width:100%}
  .cta-actions .btn-solid,.cta-actions .btn-line,.cta-actions .btn-paper{width:100%}
}
@media (max-width:575px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .hero{padding:48px 0 44px}
  .hero h1{font-size:clamp(28px,8vw,36px)}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-solid,.hero-actions .btn-line{width:100%}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px}
  .brand-main{font-size:15.5px}
  .brand-sub{font-size:10px;letter-spacing:.16em}
  .sec-head{margin-bottom:36px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:10px}
  .faq-q{font-size:16.5px;padding:22px 2px}
  .rule-item{padding:22px 8px}
  .rule-idx{font-size:26px}
  .anchor-inner{gap:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .fade-up{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink-900:#14111A;
  --ink-700:#2B2632;
  --ink-500:#6B6472;
  --paper:#F7F4EE;
  --paper-2:#EFEAE1;
  --accent:#B4123F;
  --accent-deep:#8E0E32;
  --accent-soft:#F3E2E6;
  --jade:#2E5B54;
  --line:rgba(20,17,26,.10);
  --sh-1:0 1px 2px rgba(20,17,26,.05);
  --sh-2:0 10px 30px -16px rgba(20,17,26,.22);
  --r-4:4px;
  --r-8:8px;
  --r-14:14px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:-.01em;margin:0;color:var(--ink-900);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--paper-2);}
.rule{height:1px;background:var(--line);border:0;margin:0;}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;color:var(--ink-500);
  text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block;}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:36px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(26px,3vw,36px);line-height:1.25;}
.sec-head .sec-desc{max-width:520px;color:var(--ink-500);font-size:15px;line-height:1.8;}
.sec-link{font-size:14px;font-weight:500;color:var(--ink-700);border-bottom:1px solid var(--ink-900);padding-bottom:2px;white-space:nowrap;}
.sec-link:hover{color:var(--accent);border-color:var(--accent);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 28px;border-radius:var(--r-4);
  font-size:15px;font-weight:600;letter-spacing:.06em;
  transition:background .28s var(--ease),color .28s var(--ease),transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
  position:relative;white-space:nowrap;
}
.btn i{font-size:13px;transition:transform .28s var(--ease);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:hover i{transform:translateX(4px);}
.btn-ghost{background:transparent;color:var(--ink-900);border:1px solid var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);}
.btn-light{background:var(--paper);color:var(--ink-900);}
.btn-light:hover{background:var(--accent);color:#fff;}
.btn-outline-light{background:transparent;color:var(--paper);border:1px solid rgba(247,244,238,.42);}
.btn-outline-light:hover{background:var(--paper);color:var(--ink-900);border-color:var(--paper);}
.btn-sm{height:42px;padding:0 20px;font-size:13.5px;letter-spacing:.04em;}

/* 头部 */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(247,244,238,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease),background .28s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-1);background:rgba(247,244,238,.99);}
.header-inner{display:flex;align-items:center;gap:28px;height:82px;transition:height .28s var(--ease);}
.site-header.is-stuck .header-inner{height:72px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{width:8px;height:26px;background:var(--accent);display:block;border-radius:1px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-family:var(--serif);font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--ink-900);}
.brand-sub{font-size:11px;letter-spacing:.2em;color:var(--ink-500);margin-top:4px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;
  transition:color .26s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);
  transition:width .28s var(--ease);
}
.nav-links a:hover,.nav-links a.active{color:var(--ink-900);}
.nav-links a:hover::after,.nav-links a.active::after{width:100%;}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-4);
  align-items:center;justify-content:center;font-size:17px;color:var(--ink-900);background:var(--paper);
}
.drawer{
  position:fixed;inset:0;z-index:1200;display:none;
}
.drawer.open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(20,17,26,.46);}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(360px,86vw);
  background:var(--paper);padding:28px 24px;display:flex;flex-direction:column;
  box-shadow:var(--sh-2);overflow-y:auto;
  animation:none;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-4);display:flex;align-items:center;justify-content:center;}
.drawer-links{display:flex;flex-direction:column;gap:2px;margin-bottom:24px;}
.drawer-links a{
  font-size:18px;font-family:var(--serif);font-weight:700;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink-900);
}
.drawer-links a.active{color:var(--accent);}
.drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.drawer-cta .btn{width:100%;}

/* 页头 */
.page-hero{padding:64px 0 56px;border-bottom:1px solid var(--line);}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500);margin-bottom:26px;flex-wrap:wrap;}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{color:rgba(20,17,26,.24);}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:56px;align-items:end;}
.page-hero h1{font-size:clamp(34px,4.4vw,58px);line-height:1.12;margin-bottom:22px;}
.page-hero h1 em{font-style:normal;color:var(--accent);}
.hero-lead{font-size:17px;color:var(--ink-700);max-width:38em;line-height:1.85;margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;padding:6px 14px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent-deep);
}
.tag--jade{background:rgba(46,91,84,.10);color:var(--jade);}
.tag--line{background:transparent;border:1px solid var(--line);color:var(--ink-500);}
.hero-figure{position:relative;border-radius:var(--r-14);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .6s var(--ease);}
.hero-figure:hover img{transform:scale(1.03);}
.hero-figure .fig-badge{
  position:absolute;right:14px;bottom:14px;background:rgba(247,244,238,.94);
  color:var(--ink-900);font-family:var(--serif);font-size:12px;letter-spacing:.12em;
  padding:5px 12px;border-radius:var(--r-8);
}

/* 锚点条 */
.anchor-bar{
  position:sticky;top:82px;z-index:900;background:var(--paper);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;gap:30px;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  position:relative;flex:0 0 auto;padding:18px 0;font-size:14.5px;color:var(--ink-500);white-space:nowrap;
}
.anchor-inner a::after{content:"";position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--accent);transition:width .28s var(--ease);}
.anchor-inner a:hover{color:var(--ink-900);}
.anchor-inner a.current{color:var(--ink-900);font-weight:600;}
.anchor-inner a.current::after{width:100%;}

/* 统计条 */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:44px;}
.stat{padding:26px 28px 24px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat-num{font-family:var(--serif);font-size:clamp(28px,3vw,38px);line-height:1;color:var(--ink-900);letter-spacing:.02em;}
.stat-num small{font-size:14px;color:var(--ink-500);margin-left:4px;letter-spacing:0;}
.stat-label{font-size:12.5px;letter-spacing:.1em;color:var(--ink-500);margin-top:10px;}

/* 对照表 */
.compare-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;flex-wrap:wrap;margin-bottom:30px;}
.compare-head h2{font-size:clamp(26px,3vw,36px);}
.legend{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--ink-500);}
.legend i{font-size:9px;margin-right:6px;vertical-align:middle;}
.legend .dot-red{color:var(--accent);}
.legend .dot-jade{color:var(--jade);}

.table-shell{
  border:1px solid var(--line);border-radius:var(--r-14);background:#fff;
  overflow:hidden;box-shadow:var(--sh-1);
}
.table-scroll{overflow-x:auto;max-height:640px;overflow-y:auto;}
table.diff{
  width:100%;min-width:900px;border-collapse:separate;border-spacing:0;font-size:14.5px;
}
table.diff thead th{
  position:sticky;top:0;z-index:3;background:var(--ink-900);color:var(--paper);
  font-family:var(--sans);font-weight:500;font-size:12.5px;letter-spacing:.14em;
  text-align:left;padding:16px 20px;white-space:nowrap;
}
table.diff thead th:first-child{left:0;z-index:4;background:var(--ink-900);}
table.diff tbody td{
  padding:18px 20px;border-top:1px solid var(--line);vertical-align:top;line-height:1.7;color:var(--ink-700);
}
table.diff tbody td:first-child{
  position:sticky;left:0;z-index:2;background:#fff;
  font-family:var(--serif);font-weight:700;color:var(--ink-900);
  border-right:1px solid var(--line);min-width:190px;
}
table.diff tbody tr:nth-child(even) td{background:#FBF9F5;}
table.diff tbody tr:nth-child(even) td:first-child{background:#FBF9F5;}
table.diff tbody tr:hover td{background:var(--accent-soft);}
table.diff tbody tr:hover td:first-child{background:var(--accent-soft);}
.cell-code{font-family:var(--serif);font-size:13px;color:var(--ink-500);display:block;margin-top:6px;letter-spacing:.04em;}
.mini-tag{
  display:inline-block;font-size:11.5px;letter-spacing:.1em;padding:2px 9px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent-deep);margin-bottom:6px;
}
.mini-tag.jade{background:rgba(46,91,84,.10);color:var(--jade);}
.mini-tag.gray{background:rgba(20,17,26,.06);color:var(--ink-500);}
.table-note{font-size:13px;color:var(--ink-500);padding:16px 20px;border-top:1px solid var(--line);background:var(--paper-2);}

/* 差异详解 */
.notes-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-14);overflow:hidden;}
.note{background:var(--paper);padding:34px 32px;transition:background .28s var(--ease);}
.note:hover{background:#fff;}
.note-num{font-family:var(--serif);font-size:26px;color:var(--accent);letter-spacing:.04em;line-height:1;}
.note h3{font-size:20px;margin:16px 0 12px;line-height:1.4;}
.note p{font-size:15px;color:var(--ink-700);margin-bottom:14px;}
.note-meta{font-size:12.5px;color:var(--ink-500);letter-spacing:.08em;display:flex;gap:14px;flex-wrap:wrap;}

/* 节奏说明 */
.rhythm{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:start;}
.rhythm h2{font-size:clamp(26px,3vw,36px);margin-bottom:20px;}
.rhythm p{color:var(--ink-700);font-size:15.5px;}
.rhythm-figure{margin-top:26px;border-radius:var(--r-14);overflow:hidden;border:1px solid var(--line);}
.rhythm-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .6s var(--ease);}
.rhythm-figure:hover img{transform:scale(1.03);}
.step-list{border-top:1px solid var(--line);}
.step{display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;padding:22px 0;border-bottom:1px solid var(--line);}
.step-idx{font-family:var(--serif);font-size:24px;color:var(--ink-500);letter-spacing:.04em;line-height:1.2;}
.step h3{font-size:17px;margin-bottom:6px;font-family:var(--sans);font-weight:700;}
.step p{font-size:14.5px;color:var(--ink-500);line-height:1.8;}

/* FAQ */
.faq-list{border-top:1px solid var(--line);max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:24px 0;text-align:left;font-size:17.5px;font-weight:600;color:var(--ink-900);
  font-family:var(--sans);line-height:1.6;
}
.faq-q:hover{color:var(--accent);}
.faq-sign{flex:0 0 auto;width:22px;height:22px;position:relative;margin-top:4px;}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--accent);transition:transform .28s var(--ease),opacity .28s var(--ease);}
.faq-sign::before{left:0;top:10px;width:22px;height:2px;}
.faq-sign::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.open .faq-sign::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a-inner{max-width:640px;padding:0 0 26px;font-size:15.5px;color:var(--ink-700);line-height:1.85;}
.faq-item.open .faq-a{max-height:420px;}

/* CTA 带 */
.cta-band{
  background:var(--ink-900);color:var(--paper);border-radius:var(--r-14);
  padding:56px 52px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(247,244,238,.05) 0 2px,transparent 2px 14px);
  opacity:.6;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{color:var(--paper);font-size:clamp(26px,3.2vw,40px);line-height:1.2;max-width:16em;}
.cta-band p{color:rgba(247,244,238,.72);font-size:15px;margin-top:14px;max-width:30em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{background:var(--ink-900);color:var(--paper);padding:72px 0 32px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:minmax(0,2fr) repeat(3,minmax(0,1fr));gap:48px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{height:24px;}
.footer-brand-main{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--paper);}
.footer-desc{font-size:14px;color:rgba(247,244,238,.66);line-height:1.85;max-width:32em;}
.footer-domain{font-size:12.5px;letter-spacing:.12em;color:rgba(247,244,238,.42);margin-top:18px;}
.footer-col h4{font-family:var(--sans);font-size:12.5px;letter-spacing:.16em;color:rgba(247,244,238,.52);font-weight:500;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14.5px;color:rgba(247,244,238,.84);transition:color .26s var(--ease),transform .26s var(--ease);display:inline-block;}
.footer-links a:hover{color:var(--accent);transform:translateX(-2px);}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(247,244,238,.14);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(247,244,238,.52);letter-spacing:.04em;
}
.footer-bottom a{color:rgba(247,244,238,.72);border-bottom:1px solid rgba(247,244,238,.28);}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent);}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.in{opacity:1;transform:none;}

@media (max-width:1199px){
  .nav-links{gap:20px;}
  .nav-links a{font-size:14px;}
}
@media (max-width:991px){
  .nav-links,.header-actions{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .header-inner{height:72px;gap:16px;}
  .brand-main{font-size:16px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;align-items:start;}
  .hero-figure{order:2;}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat{border-bottom:1px solid var(--line);}
  .stat:nth-child(2n){border-right:0;}
  .stat:nth-last-child(-n+2){border-bottom:0;}
  .notes-grid{grid-template-columns:1fr;}
  .rhythm{grid-template-columns:1fr;gap:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .section{padding:72px 0;}
  .anchor-bar{top:72px;}
  .cta-band{padding:40px 32px;}
}
@media (max-width:575px){
  body{font-size:16px;}
  .wrap{padding:0 20px;}
  .section{padding:56px 0;}
  .page-hero{padding:40px 0 40px;}
  .page-hero h1{font-size:32px;}
  .hero-lead{font-size:15.5px;}
  .stats{grid-template-columns:1fr 1fr;}
  .stat{padding:20px 18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:10px;}
  .note{padding:26px 22px;}
  .table-scroll{max-height:none;}
  .compare-head{gap:16px;}
  .drawer-panel{width:100%;}
  .faq-q{font-size:16.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category5 */
:root{
  --ink-900:#14111A;
  --ink-700:#2B2632;
  --ink-500:#6B6472;
  --paper:#F7F4EE;
  --paper-2:#EFEAE1;
  --accent:#B4123F;
  --accent-deep:#8E0E32;
  --accent-soft:#F3E2E6;
  --jade:#2E5B54;
  --line:rgba(20,17,26,.10);
  --line-strong:rgba(20,17,26,.20);
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,17,26,.05);
  --sh-2:0 10px 30px -16px rgba(20,17,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:1240px;
  --serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink-900);text-decoration:none;transition:color .26s var(--ease)}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:-.01em;color:var(--ink-900);margin:0}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
::selection{background:var(--accent-soft);color:var(--ink-900)}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;font-weight:500;
  color:var(--ink-500);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.25;margin:14px 0 14px}
.section-head p{color:var(--ink-500);margin:0;max-width:64ch}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.06em;
  border:1px solid transparent;cursor:pointer;
  transition:background .26s var(--ease),color .26s var(--ease),transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
  position:relative;overflow:hidden;
}
.btn::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--ink-900);transform:translateX(-50%);
  transition:width .26s var(--ease);
}
.btn:hover::after{width:100%}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--ink-900)}
.btn-outline:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-1px)}
.btn-light{background:var(--paper);color:var(--ink-900)}
.btn-light:hover{background:var(--accent);color:#fff}
.btn-sm{height:42px;padding:0 20px;font-size:14px;letter-spacing:.04em}
.btn-block{width:100%}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:500;letter-spacing:.04em;
  border-bottom:1px solid var(--line-strong);padding-bottom:2px;
}
.btn-link:hover{border-bottom-color:var(--accent)}

/* ---------- 徽章 / 标签 ---------- */
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--accent-soft);color:var(--accent-deep);
  font-size:12px;letter-spacing:.14em;font-weight:500;line-height:1.7;
}
.badge-tag.jade{background:rgba(46,91,84,.10);color:var(--jade)}
.badge-tag.ghost{background:transparent;border:1px solid var(--line);color:var(--ink-500)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,244,238,.96);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),padding .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{
  display:flex;align-items:center;gap:28px;
  min-height:80px;padding-top:10px;padding-bottom:10px;
  transition:min-height .3s var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:68px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:8px;height:34px;border-radius:1px;background:var(--accent);
  display:inline-block;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{
  font-family:var(--serif);font-weight:700;font-size:18px;
  letter-spacing:.01em;color:var(--ink-900);white-space:nowrap;
}
.brand-sub{
  font-size:11px;letter-spacing:.2em;color:var(--ink-500);margin-top:4px;
}
.nav-links{
  display:flex;align-items:center;gap:22px;
  margin-left:auto;margin-right:auto;
}
.nav-links a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--ink-700);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .26s var(--ease);
}
.nav-links a:hover{color:var(--ink-900)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--accent)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid var(--line-strong);background:transparent;
  font-size:14px;font-weight:500;color:var(--ink-900);cursor:pointer;
}
.nav-toggle:hover{background:var(--ink-900);color:var(--paper)}
.offcanvas{background:var(--paper)}
.offcanvas-header{border-bottom:1px solid var(--line);padding:20px 22px}
.offcanvas-title{font-family:var(--serif);font-size:17px;font-weight:700}
.mobile-nav{display:flex;flex-direction:column;padding:12px 0}
.mobile-nav a{
  display:block;padding:16px 22px;font-size:18px;font-weight:500;
  border-bottom:1px solid var(--line);color:var(--ink-900);
}
.mobile-nav a.active{color:var(--accent)}
.mobile-nav a:hover{padding-left:28px;color:var(--accent)}
.mobile-cta{padding:22px}
.mobile-cta .btn{width:100%}
.mobile-cta .btn+.btn{margin-top:12px}

/* ---------- 页头 Hero ---------- */
.page-hero{
  position:relative;color:var(--paper);
  background:var(--ink-900) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(20,17,26,.94) 0%,rgba(20,17,26,.86) 45%,rgba(20,17,26,.68) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(247,244,238,.05) 0 1px,transparent 1px 9px);
  opacity:.6;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:72px 0 64px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(247,244,238,.62);letter-spacing:.04em}
.crumbs a{color:rgba(247,244,238,.72)}
.crumbs a:hover{color:#fff}
.crumbs span.sep{opacity:.4}
.crumbs .current{color:var(--paper)}
.hero-grid{display:grid;grid-template-columns:1.45fr .85fr;gap:56px;align-items:end;margin-top:34px}
.page-hero h1{
  color:var(--paper);
  font-size:clamp(32px,4.4vw,54px);line-height:1.12;
  letter-spacing:-.015em;margin:20px 0 18px;
}
.page-hero h1 em{font-style:normal;color:#E9A6B6}
.hero-lead{
  font-size:clamp(15px,1.4vw,17px);color:rgba(247,244,238,.78);
  max-width:46ch;margin:0 0 28px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.hero-tags .badge-tag{background:rgba(247,244,238,.10);color:rgba(247,244,238,.9);border:1px solid rgba(247,244,238,.18)}
.hero-tags .badge-tag.solid{background:var(--accent);color:#fff;border-color:transparent}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/5;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid rgba(247,244,238,.22);
  box-shadow:var(--sh-2);
}
.hero-figure .figure-badge{
  position:absolute;right:-10px;bottom:18px;
  background:var(--accent);color:#fff;
  font-size:12px;letter-spacing:.16em;font-weight:600;
  padding:8px 16px;border-radius:var(--r-sm);
  box-shadow:0 8px 24px -12px rgba(0,0,0,.6);
}
.hero-stats{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid rgba(247,244,238,.16);
  margin-top:56px;
}
.stat{padding:22px 24px 26px 0}
.stat+.stat{padding-left:24px;border-left:1px solid rgba(247,244,238,.16)}
.stat-num{
  font-family:var(--serif);font-size:clamp(28px,3vw,38px);
  line-height:1;letter-spacing:.04em;color:var(--paper);
}
.stat-num small{font-size:14px;margin-left:4px;opacity:.7;letter-spacing:0}
.stat-label{display:block;margin-top:10px;font-size:12px;letter-spacing:.12em;color:rgba(247,244,238,.6)}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:80px;z-index:1020;
  background:rgba(247,244,238,.97);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.site-header.is-scrolled ~ .anchor-bar{top:68px}
.anchor-scroll{
  display:flex;gap:30px;overflow-x:auto;
  padding:16px 0;scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{
  position:relative;white-space:nowrap;font-size:14px;font-weight:500;
  color:var(--ink-500);padding-bottom:4px;
}
.anchor-scroll a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .26s var(--ease);
}
.anchor-scroll a:hover{color:var(--ink-900)}
.anchor-scroll a:hover::after,.anchor-scroll a.active::after{width:100%}
.anchor-scroll a.active{color:var(--accent)}

/* ---------- 长引言 ---------- */
.pullquote{
  position:relative;overflow:hidden;
  background:var(--paper-2);
  padding:88px 0 84px;
}
.pullquote::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.05;
}
.pullquote .wrap{position:relative;z-index:1}
.pullquote blockquote{margin:0;max-width:960px}
.pullquote blockquote p{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(24px,3.4vw,38px);line-height:1.5;
  letter-spacing:-.01em;color:var(--ink-900);margin:0;
}
.pullquote blockquote p em{font-style:normal;color:var(--accent);}
.quote-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  margin-top:34px;font-size:13px;letter-spacing:.1em;color:var(--ink-500);
}
.quote-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--accent);display:inline-block}

/* ---------- 编号长列表 ---------- */
.guide-list{list-style:none;border-top:1px solid var(--line)}
.guide-item{
  display:grid;grid-template-columns:96px 1fr;gap:28px;
  padding:34px 0 34px 0;
  border-bottom:1px solid var(--line);
  border-left:3px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),padding .3s var(--ease);
}
.guide-item:hover{
  border-left-color:var(--accent);
  padding-left:22px;
  background:linear-gradient(90deg,rgba(239,234,225,.9),rgba(239,234,225,0));
}
.guide-num{
  font-family:var(--serif);font-size:40px;line-height:1;
  letter-spacing:.04em;color:var(--accent);padding-top:4px;
}
.guide-item:hover .guide-num{color:var(--accent-deep)}
.guide-body h3{font-size:22px;line-height:1.4;margin:0 0 12px}
.guide-body p{color:var(--ink-700);margin:0 0 12px;max-width:70ch}
.guide-body p:last-child{margin-bottom:0}
.guide-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.guide-meta span{
  font-size:12px;letter-spacing:.1em;color:var(--ink-500);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:3px 12px;
}

/* ---------- 图文交错 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.reverse .split-media{order:2}
.split-media{position:relative}
.split-media img{
  width:100%;aspect-ratio:3/4;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:transform .32s var(--ease),box-shadow .32s var(--ease);
}
.split-media:hover img{transform:scale(1.02);box-shadow:var(--sh-2)}
.split-media figcaption{
  margin-top:14px;font-size:12.5px;color:var(--ink-500);letter-spacing:.04em;
}
.split-body h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;margin:16px 0 18px}
.split-body p{color:var(--ink-700)}
.mini-list{list-style:none;margin:24px 0 0;border-top:1px solid var(--line)}
.mini-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-700);
}
.mini-list li::before{
  content:"";width:6px;height:6px;background:var(--accent);
  margin-top:11px;flex-shrink:0;
}

/* ---------- 表单 ---------- */
.save-band{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:48px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
}
.save-band h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;margin-bottom:16px}
.save-band p{color:var(--ink-700);margin:0}
.field{margin-bottom:16px}
.field label{
  display:block;font-size:13px;letter-spacing:.08em;
  color:var(--ink-700);font-weight:500;margin-bottom:9px;
}
.field input{
  width:100%;height:48px;padding:0 16px;
  border:1px solid var(--line-strong);border-radius:var(--r-sm);
  background:var(--paper);color:var(--ink-900);
  font-size:15px;font-family:inherit;
  transition:border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.field input::placeholder{color:rgba(107,100,114,.7)}
.field input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(180,18,63,.10);
}
.form-row{display:flex;gap:12px}
.form-row input{flex:1}
.form-hint{font-size:13px;color:var(--ink-500);margin-top:12px}
.form-msg{
  display:none;margin-top:14px;font-size:13.5px;
  color:var(--accent-deep);letter-spacing:.02em;
}
.form-msg.show{display:block}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:26px 0;background:none;border:0;cursor:pointer;
  font-family:var(--serif);font-size:17.5px;font-weight:700;
  color:var(--ink-900);text-align:left;line-height:1.5;
  transition:color .26s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent);
  transition:transform .28s var(--ease),opacity .28s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows .28s var(--ease);
}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{
  max-width:640px;color:var(--ink-700);font-size:15.5px;
  line-height:1.8;margin:0;padding-bottom:26px;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:var(--paper);
  border-radius:var(--r-lg);
  padding:56px 56px;
  display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(120deg,rgba(247,244,238,.06) 0 1px,transparent 1px 12px);
  opacity:.7;pointer-events:none;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{
  color:var(--paper);font-size:clamp(26px,3.2vw,40px);
  line-height:1.22;margin-bottom:14px;
}
.cta-band p{color:rgba(247,244,238,.72);margin:0;max-width:48ch}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:stretch}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);color:var(--paper);
  padding:76px 0 32px;margin-top:96px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;
  padding-bottom:52px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand-main{
  font-family:var(--serif);font-weight:700;font-size:18px;color:var(--paper);
}
.footer-desc{
  color:rgba(247,244,238,.62);font-size:14.5px;line-height:1.8;
  max-width:34ch;margin:0 0 16px;
}
.footer-domain{
  font-size:12.5px;letter-spacing:.12em;color:rgba(247,244,238,.42);margin:0;
}
.footer-col h4{
  font-family:var(--sans);font-size:13px;font-weight:600;
  letter-spacing:.16em;color:rgba(247,244,238,.5);
  margin:0 0 20px;text-transform:uppercase;
}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{
  color:rgba(247,244,238,.78);font-size:14.5px;
  transition:color .24s var(--ease),transform .24s var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(247,244,238,.14);
  padding-top:26px;display:flex;flex-wrap:wrap;gap:14px;
  justify-content:space-between;align-items:center;
  font-size:12.5px;color:rgba(247,244,238,.5);letter-spacing:.03em;
}
.footer-bottom a{color:rgba(247,244,238,.72)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-links{gap:16px}
  .nav-links a{font-size:14px}
  .header-actions .btn-ghost{display:none}
}
@media (max-width:991px){
  .wrap{padding:0 24px}
  .nav-links{display:none}
  .header-actions .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{min-height:70px;gap:16px}
  .site-header.is-scrolled .header-inner{min-height:62px}
  .anchor-bar{top:70px}
  .site-header.is-scrolled ~ .anchor-bar{top:62px}
  .hero-inner{padding:52px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px;align-items:start}
  .hero-figure{max-width:420px}
  .hero-figure img{aspect-ratio:16/10}
  .hero-stats{grid-template-columns:repeat(2,1fr);margin-top:40px}
  .stat{padding:18px 18px 20px 0}
  .stat:nth-child(odd){padding-left:0;border-left:0}
  .stat:nth-child(n+3){border-top:1px solid rgba(247,244,238,.16)}
  .section{padding:72px 0}
  .pullquote{padding:64px 0}
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .split-media img{aspect-ratio:16/10}
  .save-band{grid-template-columns:1fr;gap:32px;padding:36px}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:40px 32px}
  .cta-actions{flex-direction:row;flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .site-footer{margin-top:72px}
}
@media (max-width:575px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .brand-main{font-size:15.5px;white-space:normal;line-height:1.25}
  .brand-sub{font-size:10px}
  .brand-mark{height:28px}
  .hero-actions .btn{width:100%}
  .hero-stats{grid-template-columns:1fr 1fr}
  .stat-num{font-size:26px}
  .guide-item{grid-template-columns:1fr;gap:12px;padding:26px 0}
  .guide-item:hover{padding-left:14px}
  .guide-num{font-size:30px}
  .guide-body h3{font-size:19px}
  .faq-q{font-size:16px;padding:22px 0}
  .save-band{padding:26px 22px}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .pullquote blockquote p{font-size:22px;line-height:1.55}
  .anchor-scroll{gap:22px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}