/* roulang page: index */
:root{
  --ink:#14161A;
  --ink-2:#5A5F66;
  --ink-3:#8A8F96;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --line:#E2DDD6;
  --line-strong:#C9C2B8;
  --brand:#E24B1F;
  --brand-dark:#B83A15;
  --accent:#D8F04A;
  --dark:#101214;
  --radius:8px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04);
  --shadow-2:0 12px 32px rgba(20,22,26,.10);
  --sec:120px;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --mono:"SF Mono","JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px}
::selection{background:var(--brand);color:#fff}

.container{max-width:1240px;margin:0 auto;padding:0 48px}
.sec{padding-top:var(--sec)}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ---------- 顶部信息条 ---------- */
.topbar{
  height:36px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  font-size:13px;
  color:var(--ink-3);
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;width:100%;gap:20px}
.topbar strong{color:var(--ink-2);font-weight:500}
.topbar-right{display:flex;align-items:center;gap:8px;white-space:nowrap}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  height:76px;
  border-bottom:1px solid transparent;
  transition:height .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{height:64px;border-bottom-color:var(--line)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:32px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{color:var(--brand);display:flex}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.logo-text em{font-style:normal;font-weight:500;color:var(--ink-2);font-size:15px;margin-left:2px}
.nav{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link{position:relative;padding:8px 0;font-size:14px;color:var(--ink-2);transition:color .2s ease;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:2px;width:16px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.22,1,.36,1);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.menu-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--radius-btn)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  padding:13px 26px;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(226,75,31,.24)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:16px 34px;font-size:16px}
.btn-block{width:100%}
.btn .arrow{transition:transform .25s ease}
.btn:hover .arrow{transform:translateX(4px)}

.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--ink);
  padding-bottom:3px;position:relative;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:var(--ink-3);
  transform:scaleX(1);transform-origin:left;transition:background .25s ease;
}
.text-link:hover::after{background:var(--brand)}
.text-link:hover{color:var(--brand)}
.text-link .arrow{transition:transform .25s ease}
.text-link:hover .arrow{transform:translateX(4px)}

.chip{
  display:inline-flex;align-items:center;
  border:1px solid var(--line-strong);border-radius:999px;
  font-size:12px;letter-spacing:.08em;color:var(--ink-2);
  padding:3px 11px;white-space:nowrap;
}
.eyebrow{
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-3);font-weight:600;
}

/* ---------- 首屏 ---------- */
.hero{padding:72px 0 0}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:center}
.hero h1{
  font-size:clamp(2.5rem,5.6vw,5rem);
  font-weight:900;letter-spacing:-.02em;line-height:1.14;
  margin-bottom:22px;
}
.hero h1 .serif{font-family:var(--serif);font-weight:700;color:var(--brand)}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:52ch;line-height:1.9;margin-bottom:34px}
.hero-cta{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.hero-media{position:relative}
.ratio-4-5{position:relative;aspect-ratio:4/5;overflow:hidden;border-radius:var(--radius);background:var(--line)}
.ratio-4-5 img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,1,.36,1)}
.ratio-4-5::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,18,20,0) 55%,rgba(16,18,20,.22) 100%);pointer-events:none}
.ratio-4-5:hover img{transform:scale(1.03)}

.trust{
  display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:64px;border-top:1px solid var(--line);
}
.trust-item{padding:22px 24px 0 0;border-right:1px solid var(--line)}
.trust-item:last-child{border-right:0}
.trust-num{font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.2}
.trust-num span{font-size:14px;font-weight:600;color:var(--ink-3);margin-left:4px;letter-spacing:0}
.trust-label{font-size:13px;color:var(--ink-3);margin-top:4px}

/* ---------- 区块标题 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.sec-head h2{font-size:clamp(1.6rem,2.8vw,2.4rem);font-weight:800;letter-spacing:-.02em;line-height:1.25}
.sec-head p{font-size:15px;color:var(--ink-2);margin-top:12px;max-width:56ch}

/* ---------- 价值主张 ---------- */
.value-grid{display:grid;grid-template-columns:300px 1fr;gap:64px;align-items:start}
.value-aside{border-top:2px solid var(--ink);padding-top:24px}
.value-aside h2{font-size:1.7rem;font-weight:800;letter-spacing:-.02em;line-height:1.3;margin-bottom:14px}
.value-aside p{font-size:15px;color:var(--ink-2)}
.value-row{
  display:grid;grid-template-columns:64px 1fr;gap:24px;
  padding:28px 20px 28px 8px;border-top:1px solid var(--line);
  transition:background .25s ease;
}
.value-row:last-child{border-bottom:1px solid var(--line)}
.value-row:hover{background:#F2EFEA}
.value-row:hover .value-idx{color:var(--brand)}
.value-idx{font-family:var(--mono);font-size:14px;font-weight:600;color:var(--ink-3);transition:color .25s ease;padding-top:4px}
.value-row h3{font-size:18px;font-weight:700;letter-spacing:-.01em;margin-bottom:8px}
.value-row p{font-size:15px;color:var(--ink-2);max-width:64ch}

/* ---------- 功能分组 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 56px;border-top:1px solid var(--line)}
.feat-item{
  display:grid;grid-template-columns:44px 1fr;gap:18px;
  padding:28px 16px 28px 6px;border-bottom:1px solid var(--line);
  transition:background .25s ease;
}
.feat-item:hover{background:#F2EFEA}
.feat-item:hover .feat-no{color:var(--brand)}
.feat-no{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:.04em;padding-top:5px;transition:color .25s ease}
.feat-item h3{font-size:17px;font-weight:700;margin-bottom:6px}
.feat-item p{font-size:14px;color:var(--ink-2);line-height:1.8}

/* ---------- 使用场景 ---------- */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0;border-top:1px solid var(--line)}
.zig:last-child{border-bottom:1px solid var(--line)}
.zig.reverse .zig-media{order:2}
.ratio-3-2{position:relative;aspect-ratio:3/2;overflow:hidden;border-radius:var(--radius);background:var(--line)}
.ratio-3-2 img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,1,.36,1)}
.ratio-3-2:hover img{transform:scale(1.03)}
.zig h3{font-size:22px;font-weight:800;letter-spacing:-.02em;margin:14px 0 12px;line-height:1.4}
.zig p{font-size:15px;color:var(--ink-2);margin-bottom:20px;max-width:52ch}

/* ---------- 案例 ---------- */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding-bottom:48px;border-bottom:1px solid var(--line);margin-bottom:40px}
.stat-num{font-family:var(--mono);font-size:clamp(2rem,4vw,3rem);font-weight:700;letter-spacing:-.03em;line-height:1}
.stat-label{font-size:14px;color:var(--ink-2);margin-top:10px}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow-1);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.case-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.case-card .case-org{font-size:13px;color:var(--ink-3);letter-spacing:.06em;margin-bottom:14px}
.case-card p{font-size:14px;color:var(--ink-2);line-height:1.85;padding-top:14px;border-top:1px solid var(--line)}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:34px 28px;display:flex;flex-direction:column;
  transition:transform .3s ease,box-shadow .3s ease;
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.price-card.featured{border-color:var(--line-strong);box-shadow:var(--shadow-2)}
.price-card.featured::before{content:"";position:absolute;top:-1px;left:-1px;right:-1px;height:3px;background:var(--brand);border-radius:var(--radius) var(--radius) 0 0}
.price-flag{
  position:absolute;top:16px;right:16px;
  font-size:11px;letter-spacing:.1em;color:var(--brand);
  border:1px solid var(--brand);border-radius:999px;padding:2px 10px;
}
.price-name{font-size:16px;font-weight:700;letter-spacing:.02em}
.price-desc{font-size:14px;color:var(--ink-2);margin-top:8px;min-height:52px}
.price-amount{font-family:var(--mono);font-size:44px;font-weight:700;letter-spacing:-.03em;line-height:1;margin:22px 0 6px}
.price-amount .cur{font-size:20px;margin-right:2px}
.price-amount .per{font-family:var(--sans);font-size:13px;font-weight:500;color:var(--ink-3);margin-left:6px;letter-spacing:0}
.price-note{font-size:13px;color:var(--ink-3);margin-bottom:22px}
.price-list{margin-bottom:28px;flex:1}
.price-list li{
  font-size:14px;color:var(--ink-2);padding:11px 0 11px 22px;
  border-top:1px solid var(--line);position:relative;
}
.price-list li::before{
  content:"";position:absolute;left:2px;top:19px;
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}

/* ---------- 最新信息 ---------- */
.news-list{border-top:1px solid var(--line)}
.news-row{
  display:grid;grid-template-columns:1fr auto 32px;gap:28px;align-items:center;
  padding:26px 12px 26px 0;border-bottom:1px solid var(--line);
  transition:background .25s ease,padding-left .25s ease;
}
.news-row:hover{background:#F2EFEA;padding-left:10px}
.news-row:hover .news-arrow{color:var(--brand);transform:translateX(4px)}
.news-title{font-size:18px;font-weight:700;letter-spacing:-.01em;margin-bottom:8px;line-height:1.5}
.news-sum{
  font-size:14px;color:var(--ink-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-side{display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.news-date{font-family:var(--mono);font-size:13px;color:var(--ink-3)}
.news-arrow{color:var(--ink-3);transition:color .25s ease,transform .25s ease;display:flex}
.news-empty{text-align:center;color:var(--ink-3);font-size:15px;padding:56px 0}
.news-empty a{color:var(--brand);border-bottom:1px solid currentColor}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 4px;font-size:17px;font-weight:700;letter-spacing:-.01em;
  transition:color .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand)}
.faq summary::after{
  content:"+";font-family:var(--mono);font-size:20px;font-weight:400;color:var(--ink-3);
  line-height:1;flex-shrink:0;transition:color .2s ease;
}
.faq details[open] summary::after{content:"−";color:var(--brand)}
.faq .faq-body{padding:0 4px 26px;font-size:15px;color:var(--ink-2);line-height:1.9;max-width:74ch}

/* ---------- 底部 CTA ---------- */
.cta-sec{padding:var(--sec) 0}
.cta-box{
  position:relative;overflow:hidden;border-radius:var(--radius);
  background:var(--dark);color:#fff;
  padding:96px 64px;text-align:center;
}
.cta-box::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.22;
}
.cta-inner{position:relative;z-index:1;max-width:720px;margin:0 auto}
.cta-inner h2{font-size:clamp(1.7rem,3.4vw,2.8rem);font-weight:800;letter-spacing:-.02em;line-height:1.3;margin-bottom:18px}
.cta-inner p{font-size:16px;color:#B8BDC2;margin-bottom:34px}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.cta-box .btn-ghost{color:#fff;border-color:rgba(255,255,255,.34)}
.cta-box .btn-ghost:hover{border-color:var(--brand);color:#fff;background:rgba(226,75,31,.16)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#B8BDC2;padding:72px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{color:var(--brand)}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text em{color:#8A8F96}
.footer-brand p{margin-top:18px;line-height:1.9;max-width:34ch;color:#8A8F96}
.footer-col h3{font-size:13px;letter-spacing:.12em;color:#fff;font-weight:700;margin-bottom:20px;text-transform:uppercase}
.footer-col li{margin-bottom:12px}
.footer-col a{color:#B8BDC2;transition:color .2s ease}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.10);
  padding:24px 0 32px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:#7C8288;
}
.footer-bottom a{color:#B8BDC2}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:100;background:var(--paper);
  display:flex;flex-direction:column;padding:24px 20px;
  transform:translateX(100%);visibility:hidden;
  transition:transform .32s cubic-bezier(.22,1,.36,1),visibility .32s;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);display:flex;align-items:center;justify-content:center}
.drawer-nav{flex:1;overflow-y:auto;padding-top:8px}
.drawer-nav a{
  display:block;font-size:20px;font-weight:600;color:var(--ink);
  padding:20px 0;border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{padding-top:20px;border-top:1px solid var(--line)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s cubic-bezier(.22,1,.36,1),transform .5s cubic-bezier(.22,1,.36,1);transition-delay:var(--d,0s)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 40px}
  .hero-grid{gap:48px}
  .value-grid{grid-template-columns:260px 1fr;gap:44px}
}
@media (max-width:1023px){
  :root{--sec:80px}
  .container{padding:0 32px}
  .nav{display:none}
  .header-actions .btn{display:none}
  .menu-toggle{display:flex}
  .hero{padding-top:52px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-media{max-width:440px}
  .trust{grid-template-columns:repeat(2,1fr);margin-top:48px}
  .trust-item{padding-top:20px}
  .trust-item:nth-child(2){border-right:0}
  .value-grid{grid-template-columns:1fr;gap:32px}
  .feat-grid{grid-template-columns:1fr;gap:0}
  .zig{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .zig.reverse .zig-media{order:0}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:28px}
  .case-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .price-desc{min-height:auto}
  .cta-box{padding:64px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .container{padding:0 20px}
  .topbar{font-size:12px}
  .topbar-right{display:none}
  .site-header{height:64px}
  .logo-text{font-size:15px}
  .logo-text em{font-size:13px}
  .hero h1{font-size:clamp(2rem,8.6vw,2.6rem);margin-bottom:18px}
  .hero-sub{font-size:16px;margin-bottom:26px}
  .hero-cta{gap:16px}
  .btn{padding:12px 22px;font-size:14px}
  .btn-lg{padding:14px 26px;font-size:15px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .trust{grid-template-columns:1fr 1fr;margin-top:36px}
  .trust-num{font-size:22px}
  .value-row{grid-template-columns:44px 1fr;gap:14px;padding:22px 12px 22px 4px}
  .feat-item{grid-template-columns:36px 1fr;gap:12px;padding:22px 12px 22px 4px}
  .stat-row{grid-template-columns:1fr 1fr}
  .news-row{grid-template-columns:1fr;gap:14px;padding:22px 8px 22px 0}
  .news-side{flex-direction:row;align-items:center;justify-content:flex-start;gap:12px}
  .news-arrow{display:none}
  .news-row:hover{padding-left:0}
  .cta-box{padding:52px 22px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .faq summary{font-size:16px;padding:18px 2px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#14161A;
  --ink-2:#5A5F66;
  --ink-3:#8A8F96;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --line:#E2DDD6;
  --line-strong:#C9C2B8;
  --brand:#E24B1F;
  --brand-dark:#B83A15;
  --accent:#D8F04A;
  --dark:#101214;
  --radius-card:8px;
  --radius-btn:4px;
  --shadow-card:0 1px 2px rgba(20,22,26,.04);
  --shadow-hover:0 12px 32px rgba(20,22,26,.10);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  --font-num:"Space Grotesk","Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-sans);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px}
::selection{background:var(--accent);color:var(--ink)}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px}

/* ---------- 顶部信息条 ---------- */
.topbar{border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-2)}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;white-space:nowrap}
.topbar-right{color:var(--ink-3);font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);position:sticky}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:transparent;transition:background .25s ease}
.site-header.is-scrolled::after{background:var(--line)}
.header-inner{height:76px;display:flex;align-items:center;gap:40px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.logo-mark{display:grid;place-items:center;color:var(--brand);flex:none}
.logo-text{font-weight:900;letter-spacing:-.02em;font-size:17px;white-space:nowrap}
.logo-text em{font-style:normal;font-weight:700;font-size:14px;color:var(--ink-2);margin-left:4px;letter-spacing:0}
.nav{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link{position:relative;font-size:14px;color:var(--ink-2);padding:6px 0;transition:color .2s ease;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);transition:width .28s cubic-bezier(.22,1,.36,1)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:16px}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:4px;align-items:center;justify-content:center;color:var(--ink)}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- 按钮 / 文字链 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-btn);padding:13px 24px;font-size:14px;font-weight:600;letter-spacing:.01em;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{padding:9px 16px;font-size:13px}
.btn .arrow{transition:transform .25s ease}
.btn:hover .arrow{transform:translateX(4px)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);position:relative;padding-bottom:2px}
.text-link::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:var(--line-strong);transition:background .25s ease}
.text-link:hover{color:var(--brand)}
.text-link:hover::after{background:var(--brand)}
.text-link .arrow{transition:transform .25s ease}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3);padding:28px 0 0}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line-strong)}
.crumb-current{max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-2)}

/* ---------- 文章布局 ---------- */
.article-layout{display:flex;justify-content:center;align-items:flex-start;gap:56px;padding-top:40px;padding-bottom:96px}
.article-main{width:100%;max-width:760px;min-width:0}
.article-head{border-bottom:1px solid var(--line);padding-bottom:26px;margin-bottom:40px}
.article-head h1{font-size:clamp(1.75rem,3.2vw,2.75rem);line-height:1.22;letter-spacing:-.02em}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;font-size:13px;color:var(--ink-3)}
.article-meta .num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line-strong);flex:none}
.article-body{font-size:17px;line-height:1.9;color:#2B3036}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em}
.article-body h2{position:relative;font-size:22px;line-height:1.4;margin:2.2em 0 .9em;padding-left:14px}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;background:var(--brand);border-radius:2px}
.article-body h3{font-size:18px;font-weight:800;margin:1.9em 0 .7em}
.article-body h4{font-size:16px;font-weight:800;margin:1.6em 0 .6em}
.article-body ul{margin:0 0 1.4em}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.5em;list-style:none}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;background:var(--brand);border-radius:1px}
.article-body ol{margin:0 0 1.4em;padding-left:22px;list-style:decimal}
.article-body ol li{margin-bottom:.5em;list-style:decimal}
.article-body blockquote{margin:1.6em 0;padding:4px 0 4px 20px;border-left:2px solid var(--line-strong);color:var(--ink-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-card);margin:1.6em 0 .6em}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:8px}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(226,75,31,.32)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body strong{font-weight:800;color:var(--ink)}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th{background:#F1EDE7;text-align:left;font-weight:700;color:var(--ink)}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.article-body code{background:#F1EDE7;border-radius:4px;padding:2px 6px;font-size:.9em;font-family:var(--font-num)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-empty{padding:48px 0 8px;text-align:center}
.article-empty h2{font-size:20px;padding-left:0}
.article-empty h2::before{display:none}
.article-empty p{margin:12px 0 22px;color:var(--ink-2);font-size:15px}

/* ---------- 目录 ---------- */
.article-toc{position:sticky;top:108px;width:200px;flex:none}
.article-toc[hidden]{display:none}
.toc-title{font-size:12px;letter-spacing:.14em;color:var(--ink-3);margin-bottom:14px}
.toc-list{border-left:1px solid var(--line)}
.toc-list a{display:block;padding:7px 0 7px 14px;margin-left:-1px;font-size:13px;line-height:1.6;color:var(--ink-2);border-left:2px solid transparent;transition:color .2s ease,border-color .2s ease}
.toc-list a:hover{color:var(--brand);border-left-color:var(--brand)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2rem)}
.section-sub{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:60ch}

/* ---------- 卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s ease,border-color .3s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card-media{aspect-ratio:3/2;overflow:hidden;background:#EDE8E1}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,1,.36,1)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{display:flex;flex-direction:column;gap:10px;padding:22px;flex:1}
.tag{align-self:flex-start;display:inline-block;padding:4px 12px;border:1px solid var(--line-strong);border-radius:999px;font-size:12px;color:var(--ink-2);letter-spacing:.04em;background:transparent}
.card-body h3{font-size:17px;line-height:1.45}
.card-body p{font-size:14px;line-height:1.8;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-more{margin-top:auto;padding-top:6px;font-size:13px;font-weight:600;color:var(--brand)}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;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:22px 0;text-align:left;font-size:17px;font-weight:700;color:var(--ink);transition:color .2s ease}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;width:14px;height:14px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink-3);transition:transform .3s ease,background .3s ease}
.faq-icon::before{left:0;right:0;top:6.5px;height:1.5px}
.faq-icon::after{top:0;bottom:0;left:6.5px;width:1.5px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-a{max-height:0;opacity:0;overflow:hidden;transition:max-height .35s ease,opacity .3s ease}
.faq-item.is-open .faq-a{max-height:360px;opacity:1}
.faq-a p{padding-bottom:22px;font-size:15px;line-height:1.9;color:var(--ink-2);max-width:70ch}

/* ---------- CTA ---------- */
.cta{background:var(--dark);color:#fff;padding:112px 0;margin-top:0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:48px}
.cta h2{font-size:clamp(1.6rem,3vw,2.4rem);color:#fff;max-width:22ch}
.cta p{margin-top:16px;font-size:15px;line-height:1.9;color:#B8BDC2;max-width:52ch}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.cta .text-link{color:#fff}
.cta .text-link::after{background:rgba(255,255,255,.35)}
.cta .text-link:hover{color:var(--accent)}
.cta .text-link:hover::after{background:var(--accent)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#B8BDC2;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-text em{color:#8A8F96}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;max-width:42ch}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:18px;font-weight:700;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li{font-size:14px;line-height:1.7}
.footer-col a{transition:color .2s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:#8A8F96}
.footer-bottom a{transition:color .2s ease}
.footer-bottom a:hover{color:#fff}

/* ---------- 进入动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s cubic-bezier(.22,1,.36,1),transform .5s cubic-bezier(.22,1,.36,1)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{gap:40px}
  .article-toc{display:none}
}
@media (max-width:1023px){
  .container{padding:0 32px}
  .section{padding:80px 0}
  .header-inner{gap:20px}
  .nav{position:fixed;top:0;right:0;bottom:0;width:min(360px,88vw);margin-left:0;flex-direction:column;align-items:stretch;gap:0;padding:96px 28px 48px;background:var(--card);box-shadow:-24px 0 60px rgba(20,22,26,.14);transform:translateX(102%);transition:transform .32s cubic-bezier(.22,1,.36,1);z-index:90;overflow-y:auto}
  .nav.is-open{transform:translateX(0)}
  .nav-link{width:100%;font-size:19px;padding:18px 0;border-bottom:1px solid var(--line);color:var(--ink)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--brand)}
  .header-actions{margin-left:auto}
  .menu-toggle{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 32px}
  .card-grid{grid-template-columns:1fr 1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .topbar-inner{height:auto;padding:10px 0;white-space:normal;line-height:1.6}
  .topbar-right{display:none}
  .header-inner{height:64px}
  .site-header.is-scrolled .header-inner{height:58px}
  .logo-text{font-size:15px}
  .logo-text em{font-size:12px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .article-layout{padding-top:24px;padding-bottom:64px}
  .article-head{padding-bottom:20px;margin-bottom:28px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:19px}
  .card-grid{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding:18px 0}
  .cta{padding:72px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#14161A;
  --ink-2:#5A5F66;
  --ink-3:#8A8F96;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --line:#E2DDD6;
  --line-strong:#C9C2B8;
  --brand:#E24B1F;
  --brand-dark:#B83A15;
  --accent:#D8F04A;
  --dark:#101214;
  --radius:8px;
  --radius-btn:4px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04);
  --shadow-2:0 12px 32px rgba(20,22,26,.10);
  --container:1240px;
  --sp:clamp(56px,7vw,120px);
  --font: "PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.22;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 48px;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.topbar-inner{
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:12.5px;
  color:var(--ink-3);
  letter-spacing:.02em;
}
.topbar-inner strong{color:var(--ink-2);font-weight:600;}
.topbar-right{display:flex;align-items:center;gap:20px;}
.topbar-dot{
  display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--brand);margin-right:6px;vertical-align:1px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,242,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .28s ease,background .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(20,22,26,.02);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:32px;
  height:76px;
  transition:height .28s ease;
}
.site-header.is-scrolled .header-inner{height:64px;}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  flex-shrink:0;
}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  color:var(--brand);
  background:var(--card);
}
.logo-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  font-weight:500;
  color:var(--ink-3);
  font-size:13px;
  margin-left:4px;
  letter-spacing:0;
}

.nav{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:14px;
  color:var(--ink-2);
  padding:6px 0;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:16px;height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s cubic-bezier(.22,1,.36,1);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:8px;
  flex-shrink:0;
}
.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  transition:border-color .2s ease,background .2s ease;
}
.menu-toggle:hover{border-color:var(--ink);background:var(--card);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  line-height:1;
  padding:13px 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(226,75,31,.24);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-sm{padding:9px 16px;font-size:13px;}
.btn-lg{padding:16px 30px;font-size:15px;}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  padding-bottom:3px;
  border-bottom:1px solid var(--line-strong);
  transition:color .2s ease,border-color .2s ease;
}
.text-link svg{transition:transform .25s cubic-bezier(.22,1,.36,1);}
.text-link:hover{color:var(--brand);border-color:var(--brand);}
.text-link:hover svg{transform:translateX(4px);}

.pill{
  display:inline-block;
  font-size:12px;
  letter-spacing:.1em;
  padding:5px 12px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-pill);
  color:var(--ink-2);
  background:transparent;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  padding-top:28px;
}
.breadcrumb a{transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--ink-2);}

/* ---------- 分类 Hero ---------- */
.page-hero{
  padding:36px 0 var(--sp);
}
.page-hero-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:64px;
  align-items:center;
}
.kicker{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--brand);
  font-weight:700;
  margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(1.9rem,4vw,3.2rem);
  line-height:1.18;
  margin-bottom:20px;
}
.page-hero h1 .serif{
  font-family:"Noto Serif SC",Georgia,"Songti SC",serif;
  font-weight:700;
}
.hero-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:52ch;
  margin-bottom:16px;
}
.hero-lead + .hero-lead{margin-bottom:28px;color:var(--ink-3);font-size:15.5px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:26px;}

.hero-media{
  position:relative;
  aspect-ratio:16/10;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--card);
}
.hero-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s cubic-bezier(.22,1,.36,1);
}
.hero-media:hover img{transform:scale(1.03);}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,26,.02),rgba(20,22,26,.14));
  pointer-events:none;
}
.hero-badge{
  position:absolute;
  left:16px;bottom:16px;
  z-index:2;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:10px 14px;
  font-size:12.5px;
  color:var(--ink-2);
  letter-spacing:.02em;
}

/* ---------- 数据条 ---------- */
.stats{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.stat{
  padding:28px 0;
  border-right:1px solid var(--line);
  padding-left:28px;
}
.stat:first-child{padding-left:0;}
.stat:last-child{border-right:0;}
.stat-num{
  display:block;
  font-size:clamp(1.5rem,2.4vw,2rem);
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-label{
  display:block;
  font-size:13px;
  color:var(--ink-3);
  margin-top:6px;
}

/* ---------- 通用区块 ---------- */
.section{padding:var(--sp) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  padding-bottom:28px;
  border-bottom:1px solid var(--line);
  margin-bottom:56px;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  max-width:22ch;
}
.section-head p{
  font-size:14.5px;
  color:var(--ink-3);
  max-width:40ch;
  text-align:right;
}

/* ---------- 图文交替 ---------- */
.zig{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
  padding:44px 0;
  border-bottom:1px solid var(--line);
}
.zig:last-of-type{border-bottom:0;}
.zig-flip .zig-media{order:2;}
.zig-flip .zig-text{order:1;}
.zig-media{
  aspect-ratio:3/2;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--card);
}
.zig-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s cubic-bezier(.22,1,.36,1);
}
.zig-media:hover img{transform:scale(1.03);}
.zig-index{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--brand);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  display:block;
  margin-bottom:14px;
}
.zig-text h2{
  font-size:clamp(1.35rem,2.2vw,1.8rem);
  margin-bottom:18px;
}
.zig-text p{margin-bottom:16px;}
.zig-text p:last-child{margin-bottom:22px;}

/* ---------- 要点列表 ---------- */
.dot-list{margin-top:4px;}
.dot-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:var(--ink-2);
  line-height:1.8;
  margin-bottom:10px;
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:6px;height:6px;
  background:var(--brand);
  border-radius:1px;
}
.dot-list li strong{color:var(--ink);font-weight:700;}

.step-list{counter-reset:step;margin-top:4px;}
.step-list li{
  counter-increment:step;
  position:relative;
  padding:12px 0 12px 44px;
  border-top:1px solid var(--line);
  font-size:15px;
  color:var(--ink-2);
}
.step-list li:last-child{border-bottom:1px solid var(--line);}
.step-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:0;top:12px;
  font-size:12px;
  font-weight:700;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
}

/* ---------- 对照表 ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--card);
}
.cmp-table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
}
.cmp-table thead th{
  background:#EFEBE5;
  color:var(--ink);
  font-weight:700;
  text-align:left;
  padding:16px 20px;
  font-size:13.5px;
  letter-spacing:.04em;
  border-bottom:1px solid var(--line-strong);
}
.cmp-table td{
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  color:var(--ink-2);
  vertical-align:top;
}
.cmp-table tbody tr:last-child td{border-bottom:0;}
.cmp-table tbody tr:hover td{background:#FCFAF7;}
.cmp-table td:first-child{color:var(--ink);font-weight:600;}

/* ---------- 分类互链 ---------- */
.cat-links{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:8px;
}
.cat-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px 26px 26px;
  transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s ease,border-color .3s ease;
}
.cat-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:var(--line-strong);
}
.cat-card h3{
  font-size:17px;
  margin:14px 0 10px;
}
.cat-card p{
  font-size:14.5px;
  color:var(--ink-3);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cat-card .text-link{margin-top:18px;border:0;padding:0;font-size:13.5px;}

/* ---------- FAQ ---------- */
.faq-list{
  border-top:1px solid var(--line);
  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;
  text-align:left;
  padding:22px 4px;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  position:relative;
  flex:0 0 16px;
  width:16px;height:16px;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-3);
  transition:transform .28s cubic-bezier(.22,1,.36,1),background .2s ease;
}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1px;}
.faq-icon::after{left:7.5px;top:0;width:1px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);}
.faq-item.is-open .faq-icon::before{background:var(--brand);}
.faq-a{
  max-height:0;
  overflow:hidden;
  opacity:0;
  transition:max-height .35s cubic-bezier(.22,1,.36,1),opacity .3s ease;
}
.faq-item.is-open .faq-a{opacity:1;}
.faq-a-inner{
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:68ch;
}

/* ---------- CTA ---------- */
.cta{
  background:var(--dark);
  color:#fff;
  margin-top:var(--sp);
}
.cta-inner{
  padding:clamp(72px,9vw,128px) 0;
  text-align:center;
}
.cta .kicker{color:var(--accent);}
.cta h2{
  color:#fff;
  font-size:clamp(1.8rem,4vw,3rem);
  margin-bottom:22px;
  letter-spacing:-.02em;
}
.cta p{
  color:#A9AEB4;
  font-size:16px;
  max-width:56ch;
  margin:0 auto 36px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:24px;
}
.cta .text-link{color:#fff;border-color:#4A4F55;}
.cta .text-link:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--dark);
  color:#B8BDC2;
  border-top:1px solid #1D2024;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:56px;
  padding:72px 0 56px;
}
.footer-brand .logo{color:#fff;margin-bottom:20px;}
.footer-brand .logo-mark{background:transparent;border-color:#2C3034;color:var(--accent);}
.footer-brand .logo-text em{color:#7E848B;}
.footer-brand p{
  font-size:14.5px;
  line-height:1.85;
  color:#9AA0A6;
  max-width:34ch;
}
.footer-col h3{
  color:#fff;
  font-size:14px;
  font-weight:700;
  margin-bottom:20px;
  letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li,
.footer-col ul li a{
  font-size:14px;
  color:#B8BDC2;
  line-height:1.6;
}
.footer-col ul li a{transition:color .2s ease;}
.footer-col ul li a:hover{color:#fff;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  border-top:1px solid #1D2024;
  padding:24px 0 32px;
  font-size:13px;
  color:#7E848B;
}
.footer-bottom a{color:#B8BDC2;transition:color .2s ease;}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .5s cubic-bezier(.22,1,.36,1),transform .5s cubic-bezier(.22,1,.36,1);
}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 32px;}
  .page-hero-grid{gap:48px;}
  .zig{gap:48px;}
}

@media (max-width:1023px){
  .header-inner{gap:20px;}
  .nav{gap:22px;}
  .nav-link{font-size:13.5px;}
  .page-hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media{aspect-ratio:16/10;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding-left:0;}
  .stat:nth-child(odd){border-right:1px solid var(--line);padding-right:20px;}
  .stat:nth-child(even){padding-left:24px;}
  .stat:nth-last-child(-n+2){border-bottom:0;}
  .zig{grid-template-columns:1fr;gap:28px;padding:32px 0;}
  .zig-flip .zig-media{order:0;}
  .zig-flip .zig-text{order:0;}
  .cat-links{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}

@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 20px;}
  .topbar-inner{font-size:11.5px;}
  .topbar-right span.topbar-time{display:none;}
  .header-inner{height:64px;}
  .site-header.is-scrolled .header-inner{height:58px;}
  .logo-text{font-size:15.5px;}
  .logo-text em{display:block;font-size:11.5px;margin-left:0;}
  .logo-mark{width:30px;height:30px;}
  .header-actions .btn-ghost{display:none;}
  .menu-toggle{display:inline-flex;}

  .nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(84vw,340px);
    background:var(--card);
    border-left:1px solid var(--line);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:88px 24px 32px;
    margin-left:0;
    transform:translateX(100%);
    transition:transform .34s cubic-bezier(.22,1,.36,1);
    box-shadow:-16px 0 40px rgba(20,22,26,.08);
    overflow-y:auto;
    z-index:70;
  }
  .nav.is-open{transform:translateX(0);}
  .nav-link{
    font-size:19px;
    padding:18px 0;
    border-bottom:1px solid var(--line);
    border-radius:0;
    color:var(--ink);
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--brand);}
  body.nav-open{overflow:hidden;}

  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:36px;}
  .section-head p{text-align:left;max-width:100%;}
  .stats-grid{grid-template-columns:1fr;}
  .stat{border-right:0 !important;padding:20px 0 !important;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .hero-actions{gap:18px;}
  .btn{width:100%;}
  .btn + .text-link{width:auto;}
  .hero-actions .btn{width:auto;}
  .cmp-table{font-size:13.5px;}
  .cmp-table thead th,.cmp-table td{padding:12px 14px;}
  .faq-q{font-size:15.5px;padding:18px 2px;}
  .faq-a-inner{padding-bottom:20px;font-size:14.5px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:52px 0 40px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .cta-actions .btn{width:100%;}
}

@media (max-width:520px){
  .page-hero h1{font-size:1.7rem;}
  .hero-lead{font-size:15.5px;}
  .logo-text em{display:none;}
  .hero-badge{left:10px;bottom:10px;padding:8px 10px;font-size:11.5px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#14161A;
  --ink-2:#5A5F66;
  --ink-3:#8A8F96;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --line:#E2DDD6;
  --line-strong:#C9C2B8;
  --brand:#E24B1F;
  --brand-dark:#B83A15;
  --accent:#D8F04A;
  --dark:#101214;
  --radius:8px;
  --radius-sm:4px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04);
  --shadow-2:0 12px 32px rgba(20,22,26,.10);
  --container:1240px;
  --pad:48px;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --serif:"Noto Serif SC","Songti SC","SimSun",serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum";
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3{font-weight:800;letter-spacing:-.02em;line-height:1.2;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px;}

/* ---------- 容器 ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  height:36px;
  display:flex;
  align-items:center;
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.topbar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:12px;
  color:var(--ink-3);
  letter-spacing:.02em;
}
.topbar b{color:var(--brand);font-weight:700;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(247,245,242,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,background .3s ease;
}
.site-header.is-scrolled{
  background:rgba(247,245,242,.98);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  height:76px;
  transition:height .3s ease;
}
.site-header.is-scrolled .header-inner{height:64px;}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-weight:800;
  flex-shrink:0;
}
.logo-mark{display:inline-flex;color:var(--brand);}
.logo-text{
  font-size:18px;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  font-size:14px;
  font-weight:600;
  color:var(--ink-3);
  margin-left:6px;
  letter-spacing:0;
}

.nav{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-link{
  position:relative;
  font-size:14px;
  color:var(--ink-2);
  padding:6px 0;
  transition:color .25s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--brand);
  transition:width .28s cubic-bezier(.22,1,.36,1);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{width:16px;}

.header-actions{display:flex;align-items:center;gap:12px;}
.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  transition:border-color .25s ease;
}
.menu-toggle:hover{border-color:var(--brand);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  line-height:1;
  padding:14px 24px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease;
  white-space:nowrap;
}
.btn-sm{padding:10px 16px;font-size:13px;}
.btn-lg{padding:17px 32px;font-size:15px;}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);}
.btn-ghost{border-color:var(--line-strong);color:var(--ink);background:transparent;}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--dark);}
.btn-light:hover{background:var(--accent);color:var(--dark);transform:translateY(-1px);}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  padding-bottom:3px;
  border-bottom:1px solid var(--line-strong);
  transition:color .25s ease,border-color .25s ease;
}
.link-arrow:hover{color:var(--brand);border-bottom-color:var(--brand);}
.link-arrow svg{transition:transform .3s ease;}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--ink-3);
}
.crumb a{transition:color .25s ease;}
.crumb a:hover{color:var(--brand);}
.crumb .sep{width:1px;height:11px;background:var(--line-strong);display:inline-block;}
.crumb .now{color:var(--ink-2);}

/* ---------- Hero ---------- */
.hero{padding:48px 0 0;}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  margin-top:28px;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand);
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:22px;
}
.hero-tag::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
}
.hero h1{
  font-size:clamp(1.9rem,4vw,3.2rem);
  line-height:1.18;
}
.hero h1 em{
  font-family:var(--serif);
  font-style:normal;
  font-weight:700;
}
.hero-lead{
  margin-top:20px;
  font-size:17px;
  color:var(--ink-2);
  max-width:54ch;
}
.hero-actions{
  margin-top:34px;
  display:flex;
  align-items:center;
  gap:26px;
  flex-wrap:wrap;
}
.hero-figure{
  position:relative;
  aspect-ratio:16/10;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--line);
}
.hero-figure img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s cubic-bezier(.22,1,.36,1);
}
.hero-figure:hover img{transform:scale(1.03);}
.hero-figure::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,26,0) 55%,rgba(20,22,26,.35) 100%);
  pointer-events:none;
}
.hero-figure figcaption{
  position:absolute;
  left:18px;bottom:14px;
  z-index:2;
  font-size:12px;
  color:rgba(255,255,255,.9);
  letter-spacing:.06em;
}

/* ---------- 数据条 ---------- */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:56px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.stat b{
  display:block;
  font-size:28px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.1;
}
.stat b i{font-style:normal;font-size:14px;font-weight:600;color:var(--ink-3);margin-left:4px;}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--ink-3);}

/* ---------- 两栏分节 ---------- */
.main{padding:104px 0 0;}
.split{
  display:grid;
  grid-template-columns:210px minmax(0,1fr);
  gap:64px;
  padding-bottom:88px;
}
.split-aside{
  position:sticky;
  top:104px;
  align-self:start;
}
.aside-label{
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-3);
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.aside-note{
  margin-top:16px;
  font-size:13px;
  line-height:1.8;
  color:var(--ink-3);
}
.aside-nav{margin-top:22px;display:flex;flex-direction:column;gap:2px;}
.aside-nav a{
  font-size:13px;
  color:var(--ink-2);
  padding:7px 0 7px 14px;
  border-left:2px solid var(--line);
  transition:color .25s ease,border-color .25s ease,padding-left .25s ease;
}
.aside-nav a:hover{color:var(--brand);border-left-color:var(--brand);padding-left:18px;}

.split-main{max-width:760px;}
.split-main h2{
  font-size:clamp(1.4rem,2.3vw,1.9rem);
  margin-bottom:20px;
  position:relative;
  padding-left:16px;
}
.split-main h2::before{
  content:"";
  position:absolute;
  left:0;top:.22em;
  width:3px;height:1em;
  background:var(--brand);
}
.split-main p{
  color:var(--ink-2);
  margin-bottom:18px;
}
.split-main p:last-child{margin-bottom:0;}

/* ---------- 列表 ---------- */
.list-check{margin-top:26px;display:grid;gap:2px;}
.list-check li{
  position:relative;
  padding:14px 0 14px 24px;
  font-size:15px;
  color:var(--ink-2);
  border-top:1px solid var(--line);
}
.list-check li:last-child{border-bottom:1px solid var(--line);}
.list-check li::before{
  content:"";
  position:absolute;
  left:2px;top:24px;
  width:6px;height:6px;
  background:var(--brand);
}

/* ---------- 表格 ---------- */
.table-wrap{
  margin-top:28px;
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--card);
}
.table-line{min-width:620px;font-size:15px;}
.table-line thead th{
  background:#F1EDE7;
  text-align:left;
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-2);
  font-weight:700;
  padding:14px 18px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.table-line tbody td{
  padding:15px 18px;
  color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.table-line tbody tr:last-child td{border-bottom:0;}
.table-line tbody tr:hover td{background:#FBF9F7;}
.table-line tbody td:first-child{color:var(--ink);font-weight:700;}

/* ---------- 图文块 ---------- */
.figure-block{
  margin-top:34px;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--line);
  aspect-ratio:3/2;
}
.figure-block img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s cubic-bezier(.22,1,.36,1);
}
.figure-block:hover img{transform:scale(1.03);}

/* ---------- 时间轴 ---------- */
.timeline{
  margin-top:34px;
  border-left:1px solid var(--line);
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:130px minmax(0,1fr);
  gap:24px;
  padding:22px 0 22px 26px;
  border-bottom:1px solid var(--line);
}
.tl-item:first-child{border-top:1px solid var(--line);}
.tl-item::before{
  content:"";
  position:absolute;
  left:-4.5px;top:31px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--brand);
}
.tl-time{
  font-size:14px;
  font-weight:800;
  letter-spacing:-.01em;
}
.tl-body h3{
  font-size:15px;
  margin-bottom:6px;
}
.tl-body p{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-2);
  margin:0;
}
.tl-tag{
  display:inline-block;
  margin-left:8px;
  font-size:11px;
  letter-spacing:.08em;
  color:var(--brand);
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:2px 9px;
  vertical-align:1px;
}

/* ---------- 相关专区 ---------- */
.related{padding:0 0 8px;}
.related-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
}
.related-head h2{font-size:clamp(1.3rem,2vw,1.6rem);}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
  margin-top:28px;
}
.rel-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.rel-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:var(--line-strong);
}
.rel-card .rel-index{
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-3);
}
.rel-card h3{
  font-size:17px;
  margin:14px 0 10px;
}
.rel-card p{
  font-size:14px;
  color:var(--ink-2);
  line-height:1.8;
}
.rel-card .rel-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:18px;
  font-size:13px;
  font-weight:700;
  color:var(--brand);
}

/* ---------- CTA 深区 ---------- */
.cta-band{
  margin-top:104px;
  background:var(--dark);
  color:#fff;
  padding:104px 0;
}
.cta-inner{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:0;
  max-width:720px;
}
.cta-band .cta-kicker{
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:20px;
}
.cta-band h2{
  font-size:clamp(1.7rem,3.4vw,2.6rem);
  line-height:1.2;
  color:#fff;
}
.cta-band p{
  margin-top:22px;
  font-size:16px;
  line-height:1.85;
  color:#B8BDC2;
  max-width:56ch;
}
.cta-actions{
  margin-top:38px;
  display:flex;
  align-items:center;
  gap:26px;
  flex-wrap:wrap;
}
.cta-actions .link-arrow{color:#fff;border-bottom-color:rgba(255,255,255,.35);}
.cta-actions .link-arrow:hover{color:var(--accent);border-bottom-color:var(--accent);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);
  color:#B8BDC2;
  padding:80px 0 32px;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:48px;
}
.footer-brand .logo{color:#fff;}
.footer-brand .logo-text em{color:#8A8F96;}
.footer-brand p{
  margin-top:20px;
  font-size:14px;
  line-height:1.85;
  color:#8A8F96;
  max-width:38ch;
}
.footer-col h3{
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:#fff;
  font-weight:700;
  margin-bottom:18px;
}
.footer-col li{
  font-size:14px;
  margin-bottom:12px;
  color:#B8BDC2;
}
.footer-col a{transition:color .25s ease;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8A8F96;
}
.footer-bottom a{transition:color .25s ease;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 进入动效 ---------- */
.js .reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .5s cubic-bezier(.22,1,.36,1),transform .5s cubic-bezier(.22,1,.36,1);
}
.js .reveal.is-in{opacity:1;transform:none;}
.js .reveal.d1{transition-delay:.07s;}
.js .reveal.d2{transition-delay:.14s;}
.js .reveal.d3{transition-delay:.21s;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--pad:40px;}
  .split{grid-template-columns:190px minmax(0,1fr);gap:48px;}
  .hero-grid{gap:44px;}
}
@media (max-width:1023px){
  :root{--pad:32px;}
  .main{padding-top:80px;}
  .hero{padding-top:36px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{max-width:640px;}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:28px 24px;}
  .split{grid-template-columns:minmax(0,1fr);gap:32px;padding-bottom:64px;}
  .split-aside{position:static;top:auto;}
  .aside-nav{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .aside-nav a{
    border-left:0;
    border:1px solid var(--line);
    border-radius:999px;
    padding:6px 14px;
    font-size:12px;
  }
  .aside-nav a:hover{padding-left:14px;border-color:var(--brand);}
  .split-main{max-width:none;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{margin-top:80px;padding:80px 0;}

  .menu-toggle{display:inline-flex;}
  .nav{
    position:fixed;
    top:0;right:0;
    z-index:130;
    width:min(340px,88vw);
    height:100vh;
    background:var(--card);
    flex-direction:column;
    align-items:flex-start;
    justify-content:flex-start;
    gap:0;
    padding:96px 32px 40px;
    transform:translateX(102%);
    transition:transform .38s cubic-bezier(.22,1,.36,1);
    box-shadow:-16px 0 40px rgba(20,22,26,.12);
    overflow-y:auto;
  }
  .nav-link{
    width:100%;
    font-size:19px;
    font-weight:600;
    color:var(--ink);
    padding:20px 0;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--brand);}
  body.nav-open .nav{transform:translateX(0);}
  body.nav-open{overflow:hidden;}
  body::after{
    content:"";
    position:fixed;
    inset:0;
    background:rgba(16,18,20,.42);
    opacity:0;
    pointer-events:none;
    transition:opacity .3s ease;
    z-index:125;
  }
  body.nav-open::after{opacity:1;pointer-events:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media (max-width:767px){
  :root{--pad:20px;}
  body{font-size:16px;}
  .topbar{height:34px;}
  .topbar .topbar-right{display:none;}
  .header-inner{height:64px;gap:16px;}
  .site-header.is-scrolled .header-inner{height:58px;}
  .logo-text em{display:none;}
  .logo-text{font-size:17px;}
  .header-actions .btn{display:none;}
  .hero{padding-top:28px;}
  .hero-lead{font-size:16px;}
  .hero-actions{gap:18px;margin-top:28px;}
  .stat-row{margin-top:40px;padding-top:22px;}
  .stat b{font-size:23px;}
  .main{padding-top:56px;}
  .split{padding-bottom:48px;}
  .split-main h2{padding-left:14px;}
  .tl-item{grid-template-columns:minmax(0,1fr);gap:8px;padding-left:20px;}
  .tl-item::before{top:28px;}
  .cta-band{margin-top:56px;padding:64px 0;}
  .site-footer{padding:56px 0 26px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn-lg{padding:15px 26px;}
}

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

/* roulang page: category3 */
:root{
  --ink:#14161A;
  --ink-2:#5A5F66;
  --ink-3:#8A8F96;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --line:#E2DDD6;
  --line-strong:#C9C2B8;
  --brand:#E24B1F;
  --brand-dark:#B83A15;
  --accent:#D8F04A;
  --dark:#101214;
  --radius:8px;
  --radius-sm:4px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04);
  --shadow-2:0 12px 32px rgba(20,22,26,.10);
  --container:1240px;
  --pad:48px;
  --section:120px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{font-weight:800;letter-spacing:-.02em;line-height:1.2}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,242,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,background .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:76px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;letter-spacing:-.01em}
.logo-mark{display:inline-flex;color:var(--brand)}
.logo-text{font-size:19px;line-height:1}
.logo-text em{font-style:normal;color:var(--ink-2);font-weight:600;margin-left:2px}
.nav{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;font-size:14px;color:var(--ink-2);padding:6px 0;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);transition:width .28s cubic-bezier(.22,1,.36,1)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:16px}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:16px}
.header-actions{display:flex;align-items:center;gap:14px}
.menu-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);transition:border-color .2s ease,background .2s ease}
.menu-toggle:hover{border-color:var(--ink);background:#fff}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;padding:13px 24px;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{padding:9px 16px;font-size:13px}
.btn .arrow{transition:transform .24s cubic-bezier(.22,1,.36,1)}
.btn:hover .arrow{transform:translateX(4px)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);position:relative;padding-bottom:2px;border-bottom:1px solid var(--line-strong);transition:color .2s ease,border-color .2s ease}
.text-link:hover{color:var(--brand);border-color:var(--brand)}
.text-link .arrow{transition:transform .24s cubic-bezier(.22,1,.36,1)}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------- mobile drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  transform:translateX(100%);transition:transform .34s cubic-bezier(.22,1,.36,1);
  display:flex;flex-direction:column;padding:24px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:var(--radius-sm)}
.drawer-nav{margin-top:8px;flex:1}
.drawer-nav a{display:block;font-size:20px;font-weight:600;padding:18px 0;border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{padding-top:20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%;justify-content:center}

/* ---------- breadcrumb + hero ---------- */
.breadcrumb{font-size:13px;color:var(--ink-3);padding-top:28px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb a{transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line-strong)}
.cat-hero{padding:26px 0 76px;border-bottom:1px solid var(--line)}
.cat-hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);font-weight:600}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand)}
.cat-hero h1{font-size:clamp(1.9rem,4vw,3.2rem);margin:18px 0 20px}
.cat-hero h1 .serif{font-family:"Noto Serif SC",serif;font-weight:700}
.cat-hero .lead{font-size:16px;color:var(--ink-2);max-width:52ch;line-height:1.9}
.cat-hero .hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px;margin-top:30px}
.hero-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.hero-facts div strong{display:block;font-family:"Space Grotesk",sans-serif;font-size:26px;font-weight:700;letter-spacing:-.02em}
.hero-facts div span{font-size:13px;color:var(--ink-3)}
.hero-media{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--shadow-1)}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,1,.36,1)}
.hero-media:hover img{transform:scale(1.03)}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,18,20,0) 45%,rgba(16,18,20,.35) 100%)}
.hero-badge{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(255,255,255,.94);border-radius:var(--radius-sm);
  padding:10px 14px;font-size:13px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;gap:8px;
}
.hero-badge i{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}

/* ---------- sections ---------- */
.section{padding:var(--section) 0}
.section-tight{padding:88px 0}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:clamp(1.6rem,2.6vw,2.25rem);margin:16px 0 18px}
.section-head p{color:var(--ink-2);font-size:16px}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- flow row (核心版式) ---------- */
.flow-row{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:0 24px}
.flow-row::before{content:"";position:absolute;left:16px;right:16px;top:17px;height:1px;background:var(--line-strong)}
.flow-item{position:relative;z-index:1}
.flow-num{
  display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;
  background:var(--paper);border:1px solid var(--line-strong);
  font-family:"Space Grotesk",sans-serif;font-size:13px;font-weight:600;letter-spacing:.02em;
  transition:border-color .25s ease,color .25s ease,background .25s ease;
}
.flow-item:hover .flow-num{border-color:var(--brand);color:var(--brand);background:#fff}
.flow-item h3{font-size:16px;margin:18px 0 8px;transition:color .25s ease}
.flow-item:hover h3{color:var(--brand)}
.flow-item p{font-size:14px;line-height:1.78;color:var(--ink-2)}
.flow-note{
  margin-top:44px;display:flex;gap:14px;align-items:flex-start;
  border:1px solid var(--line);border-left:3px solid var(--brand);
  background:#fff;border-radius:var(--radius-sm);padding:18px 22px;max-width:820px;
}
.flow-note strong{font-size:14px;white-space:nowrap}
.flow-note span{font-size:14px;color:var(--ink-2);line-height:1.8}

/* ---------- split content ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.prose p{color:var(--ink-2);margin-bottom:18px}
.prose p:last-child{margin-bottom:0}
.check-list{border-top:1px solid var(--line)}
.check-list li{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}
.check-list li span.idx{font-family:"Space Grotesk",sans-serif;font-size:13px;font-weight:600;color:var(--brand);padding-top:3px}
.check-list li div strong{display:block;font-size:15px;margin-bottom:4px}
.check-list li div p{font-size:14px;color:var(--ink-2);line-height:1.78;margin:0}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{width:100%;border-collapse:collapse;min-width:620px}
thead th{
  text-align:left;font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--ink);background:#F1EDE7;padding:16px 22px;border-bottom:1px solid var(--line);
}
tbody td{padding:18px 22px;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink-2);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:#FBF9F6}
tbody td strong{color:var(--ink);font-weight:600}
.tag-status{display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;border:1px solid var(--line-strong);color:var(--ink-2)}
.tag-status.ok{color:var(--brand-dark);border-color:#E9B9A5;background:#FDF2ED}

/* ---------- faq grid ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 56px;border-top:1px solid var(--line)}
.faq-item{padding:26px 0;border-bottom:1px solid var(--line)}
.faq-item dt{font-size:16.5px;font-weight:700;display:flex;gap:10px;margin-bottom:10px}
.faq-item dt::before{content:"";flex:0 0 3px;width:3px;height:18px;background:var(--brand);margin-top:6px}
.faq-item dd{margin:0 0 0 13px;font-size:14.5px;color:var(--ink-2);line-height:1.85}

/* ---------- related categories ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s ease,border-color .3s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.rel-media{position:relative;aspect-ratio:3/2;overflow:hidden}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,1,.36,1)}
.rel-card:hover .rel-media img{transform:scale(1.03)}
.rel-body{padding:22px 24px 26px}
.rel-body h3{font-size:17px;margin-bottom:8px}
.rel-body p{font-size:14px;color:var(--ink-2);line-height:1.8;margin-bottom:16px}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:#fff;padding:104px 0}
.cta-inner{max-width:760px}
.cta-band .eyebrow{color:rgba(255,255,255,.6)}
.cta-band .eyebrow::before{background:var(--accent)}
.cta-band h2{font-size:clamp(1.7rem,3.2vw,2.6rem);margin:18px 0 18px;color:#fff}
.cta-band p{color:rgba(255,255,255,.72);font-size:16px;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:26px;margin-top:34px}
.cta-band .text-link{color:#fff;border-color:rgba(255,255,255,.4)}
.cta-band .text-link:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#B8BDC2;padding:76px 0 32px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{color:var(--brand)}
.footer-brand .logo-text em{color:#B8BDC2}
.footer-brand p{margin-top:18px;line-height:1.85;max-width:38ch;color:#8F959B}
.footer-col h3{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:18px;font-weight:600}
.footer-col ul li{padding:7px 0}
.footer-col ul li a{transition:color .2s ease}
.footer-col ul li a:hover{color:#fff}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding-top:26px;font-size:13px;color:#8F959B}
.footer-bottom a{transition:color .2s ease}
.footer-bottom a:hover{color:#fff}

/* ---------- animations ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s cubic-bezier(.22,1,.36,1),transform .5s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--pad:40px;--section:96px}
}
@media (max-width:1023px){
  :root{--pad:32px;--section:80px}
  .nav{display:none}
  .header-actions .btn-ghost{display:none}
  .menu-toggle{display:inline-flex}
  .cat-hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{aspect-ratio:16/10}
  .grid-2{grid-template-columns:1fr;gap:36px}
  .flow-row{grid-template-columns:repeat(2,1fr);gap:36px 24px}
  .flow-row::before{display:none}
  .rel-grid{grid-template-columns:1fr;gap:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .faq-grid{grid-template-columns:1fr;gap:0}
}
@media (max-width:767px){
  :root{--pad:20px;--section:56px}
  body{font-size:15.5px}
  .site-header .header-inner{height:64px}
  .logo-text{font-size:17px}
  .cat-hero{padding:20px 0 56px}
  .hero-facts{grid-template-columns:1fr;gap:16px}
  .flow-row{grid-template-columns:1fr;gap:0}
  .flow-row::before{display:block;left:17px;right:auto;top:10px;bottom:14px;width:1px;height:auto;background:var(--line-strong)}
  .flow-item{padding:0 0 30px 52px}
  .flow-num{position:absolute;left:0;top:0;background:var(--paper)}
  .flow-item h3{margin:2px 0 6px}
  .section-tight{padding:64px 0}
  .cta-band{padding:72px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#14161A;
  --ink-2:#5A5F66;
  --ink-3:#8A8F96;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --line:#E2DDD6;
  --line-strong:#C9C2B8;
  --brand:#E24B1F;
  --brand-dark:#B83A15;
  --accent:#D8F04A;
  --dark:#101214;
  --radius:8px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04);
  --shadow-2:0 12px 32px rgba(20,22,26,.10);
  --ease:cubic-bezier(.22,1,.36,1);
}

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

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

body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

body.is-locked{overflow:hidden}

img{max-width:100%;display:block}
a{color:inherit}
button{font:inherit}
h1,h2,h3,h4{color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.2;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

.num,.stat-value,.meta,.time{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px}

.skip{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 6px 0;font-size:14px;text-decoration:none;
}
.skip:focus{left:0}

/* ---------- 容器 ---------- */
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 48px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(247,245,242,.88);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:var(--paper);
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(20,22,26,.02);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  height:76px;
  transition:height .3s var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--ink);
  flex:0 0 auto;
}
.logo-mark{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border-radius:6px;
  background:var(--ink);
  color:var(--accent);
  flex:0 0 auto;
}
.logo-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:-.02em;
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  font-size:.82em;
  font-weight:600;
  color:var(--ink-3);
  margin-left:4px;
  letter-spacing:0;
}

.nav{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:14px;
  color:var(--ink-2);
  text-decoration:none;
  transition:color .22s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--brand);
  transition:width .28s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{width:16px}

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

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  font-size:14px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  text-decoration:none;
  cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s var(--ease),box-shadow .22s ease;
}
.btn-sm{padding:9px 18px;font-size:13px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn .arrow{transition:transform .25s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}

.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:38px;
  padding:0;
  background:transparent;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  cursor:pointer;
  transition:border-color .22s ease;
}
.menu-toggle:hover{border-color:var(--ink)}

/* ---------- 移动端抽屉 ---------- */
.nav-drawer{
  position:fixed;
  top:0;
  right:0;
  height:100%;
  width:min(84vw,340px);
  background:var(--paper);
  border-left:1px solid var(--line);
  z-index:130;
  display:flex;
  flex-direction:column;
  padding:20px 24px 28px;
  overflow-y:auto;
  transform:translateX(102%);
  transition:transform .38s var(--ease);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:38px;height:38px;
  display:grid;place-items:center;
  background:transparent;border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  cursor:pointer;transition:border-color .22s ease,color .22s ease;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-nav{display:grid;margin-top:12px}
.drawer-nav a{
  display:block;
  padding:17px 0;
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  text-decoration:none;
  border-bottom:1px solid var(--line);
  transition:color .22s ease;
}
.drawer-nav a:hover{color:var(--brand)}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:auto;padding-top:28px;display:grid;gap:12px}
.drawer-foot .btn{width:100%}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(16,18,20,.42);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s ease;
  z-index:120;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- Hero ---------- */
.page-hero{
  padding:52px 0 76px;
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  margin-bottom:36px;
}
.breadcrumb a{color:var(--ink-3);text-decoration:none;transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line-strong)}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--brand);
  margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(1.9rem,4vw,3.2rem);
  font-weight:900;
  line-height:1.18;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero-lead{
  max-width:52ch;
  font-size:16.5px;
  line-height:1.9;
  margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  text-decoration:none;
  position:relative;
  padding-bottom:2px;
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s var(--ease),background .3s ease;
}
.text-link:hover{color:var(--brand)}
.text-link:hover::after{transform:scaleX(1);background:var(--brand)}
.text-link .arrow{transition:transform .25s var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}

.hero-figure{
  margin:0;
  aspect-ratio:16/10;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--line);
  box-shadow:var(--shadow-1);
}
.hero-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s var(--ease);
}
.hero-figure:hover img{transform:scale(1.03)}

.stat-bar{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  margin-top:56px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.stat-bar li{display:grid;gap:4px}
.stat-value{
  font-size:22px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.01em;
  line-height:1.3;
}
.stat-label{font-size:13px;color:var(--ink-3)}

/* ---------- 通用区块 ---------- */
.section{padding:100px 0}
.section--line{border-top:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{
  font-size:clamp(1.5rem,2.8vw,2.15rem);
  font-weight:800;
  margin-bottom:16px;
}
.section-head p{font-size:16px;color:var(--ink-2)}

/* ---------- 要点行式列表 ---------- */
.point-list{border-top:1px solid var(--line)}
.point{
  display:grid;
  grid-template-columns:96px minmax(0,1fr);
  gap:28px;
  padding:28px 20px 28px 16px;
  border-bottom:1px solid var(--line);
  transition:background .25s ease;
}
.point:hover{background:rgba(226,75,31,.035)}
.point-num{
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--ink-3);
  transition:color .25s ease;
  padding-top:5px;
}
.point:hover .point-num{color:var(--brand)}
.point-body h3{font-size:18px;font-weight:800;margin-bottom:8px}
.point-body p{font-size:15.5px;line-height:1.85}

/* ---------- 折叠问答 ---------- */
.acc-group + .acc-group{margin-top:56px}
.acc-group-title{
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--ink-3);
  margin:0 0 6px;
  text-transform:uppercase;
}
.acc-list{border-top:1px solid var(--line)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-trigger{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:24px;
  padding:22px 4px;
  background:none;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  line-height:1.6;
  cursor:pointer;
  transition:color .22s ease;
}
.acc-trigger:hover{color:var(--brand)}
.acc-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;
  height:16px;
  margin-top:7px;
}
.acc-icon::before,
.acc-icon::after{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:16px;
  height:1.5px;
  background:var(--ink-3);
  transform:translateY(-50%);
  transition:transform .3s var(--ease),background .3s ease;
}
.acc-icon::after{transform:translateY(-50%) rotate(90deg)}
.acc-item.is-open .acc-icon::after{transform:translateY(-50%) rotate(0deg)}
.acc-item.is-open .acc-icon::before,
.acc-item.is-open .acc-icon::after{background:var(--brand)}

.acc-panel{
  display:grid;
  grid-template-rows:0fr;
  opacity:0;
  transition:grid-template-rows .36s var(--ease),opacity .3s ease;
}
.acc-item.is-open .acc-panel{grid-template-rows:1fr;opacity:1}
.acc-panel-inner{overflow:hidden}
.acc-panel p{
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
  padding:0 44px 24px 4px;
  max-width:76ch;
}

/* ---------- 适配速查 ---------- */
.spec-banner{
  margin:0 0 40px;
  aspect-ratio:16/6;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--line);
}
.spec-banner img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.spec-banner:hover img{transform:scale(1.03)}
.spec-list{border-top:1px solid var(--line)}
.spec-row{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:32px;
  padding:24px 16px 24px 12px;
  border-bottom:1px solid var(--line);
  transition:background .25s ease;
}
.spec-row:hover{background:rgba(226,75,31,.035)}
.spec-name{font-size:16px;font-weight:800;color:var(--ink)}
.spec-desc{font-size:15.5px;line-height:1.85}

/* ---------- 分类入口 ---------- */
.link-list{display:grid;gap:0;border-top:1px solid var(--line)}
.link-list li{border-bottom:1px solid var(--line)}
.link-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:22px 8px;
  text-decoration:none;
  transition:background .25s ease,padding .25s ease;
}
.link-list a:hover{background:rgba(226,75,31,.035)}
.link-item-title{
  display:block;
  font-size:17px;
  font-weight:800;
  color:var(--ink);
  margin-bottom:4px;
  transition:color .22s ease;
}
.link-list a:hover .link-item-title{color:var(--brand)}
.link-item-desc{display:block;font-size:14.5px;color:var(--ink-2)}
.link-list .arrow{
  flex:0 0 auto;
  color:var(--ink-3);
  transition:transform .25s var(--ease),color .25s ease;
}
.link-list a:hover .arrow{transform:translateX(4px);color:var(--brand)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  background:var(--dark);
  color:#fff;
  padding:130px 0;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.cta-band .container{position:relative;z-index:1}
.cta-band .eyebrow{color:var(--accent)}
.cta-band h2{
  color:#fff;
  font-size:clamp(1.75rem,3.6vw,2.9rem);
  font-weight:900;
  max-width:20ch;
  margin-bottom:36px;
}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px}
.cta-band .text-link{color:#E9E6E1}
.cta-band .text-link:hover{color:var(--accent)}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--dark);
  color:#B8BDC2;
  padding:76px 0 32px;
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);color:var(--accent)}
.footer-brand .logo-text em{color:#8A8F96}
.footer-brand p{
  font-size:14px;
  line-height:1.9;
  margin-top:20px;
  max-width:36ch;
  color:#9AA0A6;
}
.footer-col h3{
  color:#fff;
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
  margin:0 0 18px;
}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:14px;color:#B8BDC2;line-height:1.7}
.footer-col a{
  font-size:14px;
  color:#B8BDC2;
  text-decoration:none;
  transition:color .22s ease;
}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:#8A8F96;
}
.footer-bottom a{color:#B8BDC2;text-decoration:none;transition:color .22s ease}
.footer-bottom a:hover{color:#fff}

/* ---------- 进入动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.reveal.is-visible{opacity:1;transform:none}
[data-stagger] > *{will-change:opacity,transform}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .hero-grid{gap:40px}
  .section{padding:80px 0}
}

@media (max-width:1023px){
  .nav{display:none}
  .menu-toggle{display:inline-flex}
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{aspect-ratio:16/9}
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 24px;margin-top:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .spec-row{grid-template-columns:180px minmax(0,1fr);gap:24px}
  .cta-band{padding:96px 0}
}

@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{height:64px;gap:16px}
  .site-header.is-scrolled .header-inner{height:58px}
  .logo-text{font-size:15px}
  .logo-text em{display:block;margin-left:0;font-size:12px}
  .header-actions .btn-ghost{display:none}
  .page-hero{padding:32px 0 56px}
  .breadcrumb{margin-bottom:24px}
  .page-hero h1{font-size:clamp(1.6rem,7vw,2.1rem)}
  .hero-lead{font-size:15.5px;margin-bottom:26px}
  .hero-actions{gap:18px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .point{grid-template-columns:1fr;gap:8px;padding:22px 8px}
  .point-num{padding-top:0}
  .acc-trigger{font-size:16px;padding:20px 2px;gap:16px}
  .acc-panel p{padding:0 8px 22px 2px;font-size:14.8px}
  .acc-group + .acc-group{margin-top:40px}
  .spec-banner{aspect-ratio:16/9;margin-bottom:28px}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:20px 8px}
  .link-list a{padding:18px 6px;gap:16px}
  .link-item-title{font-size:16px}
  .cta-band{padding:72px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding:56px 0 28px}
  .footer-bottom{margin-top:40px;font-size:12.5px}
}

@media (max-width:520px){
  .stat-bar{grid-template-columns:1fr 1fr}
  .stat-value{font-size:19px}
  .btn{padding:12px 18px}
}

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