/* roulang page: index */
:root{
  --brand:#2F6F8F;
  --brand-dark:#1E4C63;
  --brand-light:#E8F1F4;
  --accent:#E07A3F;
  --accent-dark:#B85C28;
  --accent-light:#FBEDE4;
  --grass:#6FA287;
  --bg:#F6F8F7;
  --surface:#FFFFFF;
  --surface-2:#EEF3F5;
  --border:#D8E2E6;
  --text:#1F2A30;
  --muted:#5E6E76;
  --ink:#12313F;
  --radius:14px;
  --radius-lg:20px;
  --radius-sm:10px;
  --shadow-sm:0 8px 24px rgba(18,49,63,.08);
  --shadow-md:0 14px 34px rgba(18,49,63,.12);
  --shadow-top:0 -6px 18px rgba(18,49,63,.08);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  padding-bottom:84px;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.25;letter-spacing:0}
h1{font-size:clamp(30px,4vw,48px);line-height:1.2}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;z-index:200}
.skip-link:focus{left:12px;top:12px;color:#fff}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;box-shadow:0 2px 12px rgba(18,49,63,.07)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand__mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex:0 0 auto}
.brand__text strong{display:block;font-size:18px;line-height:1.2;letter-spacing:.01em}
.brand__text small{display:block;font-size:12px;color:var(--muted);line-height:1.3}
.topbar__tools{display:flex;align-items:center;gap:14px;flex:1 1 auto;justify-content:flex-end}
.search{display:flex;align-items:center;gap:8px;height:42px;padding:0 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2);width:260px;transition:border-color .2s,box-shadow .2s,background-color .2s}
.search i{color:var(--muted);font-size:13px}
.search input{border:0;background:transparent;outline:none;font-size:14px;width:100%}
.search input::placeholder{color:#8B9AA2}
.search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(47,111,143,.14)}
.link-trend{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--muted)}
.link-trend:hover{color:var(--accent-dark)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--brand-dark);align-items:center;justify-content:center;font-size:17px}
.nav-toggle:hover{background:var(--brand-light)}
.chanbar{border-top:1px solid var(--border);background:#fff}
.chanbar__inner{display:flex;align-items:center;gap:24px;height:48px}
.chanbar__list{display:flex;gap:6px;flex:0 0 auto}
.chanbar__list a{display:inline-block;padding:6px 16px;border-radius:999px;font-size:15px;font-weight:500;color:var(--text)}
.chanbar__list a:hover{background:var(--brand-light);color:var(--brand-dark)}
.chanbar__list a.is-active{background:var(--brand);color:#fff}
.chanbar__list a.is-active:hover{background:var(--brand-dark);color:#fff}
.hottags{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;white-space:nowrap;scrollbar-width:none}
.hottags::-webkit-scrollbar{display:none}
.hottags__label{font-size:13px;color:var(--muted);display:inline-flex;align-items:center;gap:6px}
.hottags a{font-size:13px;color:var(--muted);padding:4px 12px;border-radius:999px;background:var(--surface-2)}
.hottags a:hover{color:var(--accent-dark);background:var(--accent-light)}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(330px,88vw);background:#fff;z-index:90;transform:translateX(106%);transition:transform .3s ease;padding:22px;overflow-y:auto;box-shadow:-10px 0 30px rgba(18,49,63,.16)}
.drawer.is-open{transform:none}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer__close{width:38px;height:38px;border-radius:10px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--brand-dark)}
.drawer__close:hover{background:var(--brand-light)}
.drawer__nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.drawer__nav a{padding:12px 14px;border-radius:10px;font-size:16px;color:var(--text);font-weight:500}
.drawer__nav a:hover{background:var(--surface-2)}
.drawer__nav a.is-active{background:var(--brand);color:#fff}
.drawer__search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2);margin-bottom:20px}
.drawer__search input{border:0;background:transparent;outline:none;width:100%;font-size:14px}
.drawer__tags{display:flex;flex-wrap:wrap;gap:8px}
.drawer__tags a{font-size:13px;padding:5px 12px;border-radius:999px;background:var(--surface-2);color:var(--muted)}
.drawer__tags a:hover{background:var(--accent-light);color:var(--accent-dark)}
.drawer-mask{position:fixed;inset:0;background:rgba(18,49,63,.45);z-index:80;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 / 标签 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(224,122,63,.28)}
.btn--primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(224,122,63,.34)}
.btn--primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(224,122,63,.26)}
.btn--ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn--ghost:hover{background:var(--brand-light);color:var(--brand-dark)}
.btn--light{background:#fff;color:var(--brand-dark)}
.btn--light:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px)}
.btn--sm{height:40px;padding:0 16px;font-size:14px}
.btn--block{width:100%}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:500;background:var(--brand-light);color:var(--brand-dark)}
.pill--accent{background:var(--accent-light);color:var(--accent-dark)}
.pill--grass{background:#E8F1EC;color:#41715A}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow i{transition:transform .2s ease}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0}
.section--tight{padding:64px 0}
.section--plain{background:#fff}
.section__head{max-width:760px;margin-bottom:40px}
.section__head--split{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--accent-dark);text-transform:none;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.section__lead{color:var(--muted);font-size:16px;margin:12px 0 0}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--border)}
.hero__bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.12}
.hero__mesh{position:absolute;inset:0;background-image:linear-gradient(rgba(47,111,143,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(47,111,143,.07) 1px,transparent 1px);background-size:58px 58px;pointer-events:none}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:center;padding-top:72px;padding-bottom:84px}
.hero__tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-dark);background:var(--brand-light);border-radius:999px;padding:6px 14px;margin-bottom:20px}
.hero__tag i{font-size:9px;color:var(--accent)}
.hero h1{margin-bottom:18px}
.hero__lead{font-size:17px;color:var(--muted);max-width:600px;margin-bottom:28px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero__stats{display:flex;gap:40px;flex-wrap:wrap;border-top:1px solid var(--border);padding-top:24px}
.hero__stats li strong{display:block;font-size:28px;font-weight:700;color:var(--accent);line-height:1.2}
.hero__stats li span{font-size:13px;color:var(--muted)}
.hero__visual{position:relative}
.hero__visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}
.hero__float{position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-sm);padding:14px 18px;min-width:180px}
.hero__float strong{display:block;font-size:15px;color:var(--ink)}
.hero__float span{font-size:12px;color:var(--muted)}

/* ---------- Bento 卖点 ---------- */
.bento{display:grid;grid-template-columns:1.55fr 1fr;grid-template-rows:repeat(2,minmax(0,1fr));gap:24px}
.tile{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease}
.tile:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.tile__thumb{overflow:hidden}
.tile__thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease}
.tile:hover .tile__thumb img{transform:scale(1.03)}
.tile__body{padding:24px}
.tile__body h3{margin-bottom:10px;transition:color .25s ease}
.tile:hover .tile__body h3{color:var(--brand)}
.tile__body p{color:var(--muted);font-size:15px;margin-bottom:14px}
.bento__main{grid-row:span 2;display:flex;flex-direction:column}
.bento__main .tile__thumb{flex:0 0 auto}
.bento__main .tile__thumb img{aspect-ratio:16/9}
.bento__main .tile__body{padding:28px;flex:1 1 auto;display:flex;flex-direction:column;justify-content:center}
.bento__main .tile__body h3{font-size:24px}
.tile__num{display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:26px;padding:0 10px;border-radius:999px;background:var(--surface-2);color:var(--brand-dark);font-size:13px;font-weight:700;margin-bottom:14px}

/* ---------- 场景演示 ---------- */
.scene{background:var(--surface-2)}
.scene__inner{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center}
.scene__media img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
.steps{margin-top:8px}
.steps li{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--border)}
.steps li:last-child{border-bottom:0;padding-bottom:0}
.steps__no{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;height:28px;min-width:44px;padding:0 10px;border-radius:999px;background:var(--accent-light);color:var(--accent-dark);font-size:13px;font-weight:700}
.steps h3{font-size:17px;margin-bottom:6px}
.steps p{font-size:14px;color:var(--muted);margin:0}

/* ---------- 社会认同 ---------- */
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:40px}
.logo-wall span{display:flex;align-items:center;justify-content:center;height:64px;background:#fff;border:1px solid var(--border);border-radius:12px;color:var(--muted);font-size:14px;font-weight:500;filter:grayscale(1);transition:filter .25s ease,color .25s ease,box-shadow .25s ease}
.logo-wall span:hover{filter:none;color:var(--brand-dark);box-shadow:var(--shadow-sm)}
.reviews{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:40px}
.review{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:26px}
.reviews .review:nth-child(2){margin-top:34px}
.review p{font-size:15px;color:var(--text);margin-bottom:18px}
.review__meta{display:flex;align-items:center;gap:12px}
.review__avatar{width:42px;height:42px;border-radius:50%;background:var(--brand-light);color:var(--brand-dark);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.review__meta strong{display:block;font-size:15px;color:var(--ink)}
.review__meta span{font-size:13px;color:var(--muted)}
.stat-strip{background:var(--ink);border-radius:var(--radius-lg);padding:34px 40px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-strip div strong{display:block;font-size:26px;font-weight:700;color:#fff;line-height:1.25}
.stat-strip div span{font-size:13px;color:rgba(255,255,255,.68)}

/* ---------- 最新信息 ---------- */
.chips{display:flex;gap:10px;flex-wrap:wrap}
.chips a{font-size:14px;padding:6px 16px;border-radius:999px;background:#fff;border:1px solid var(--border);color:var(--muted)}
.chips a:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-light)}
.chips a.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.news-card__link{display:block;color:inherit;height:100%}
.news-card__link:hover{color:inherit}
.news-card__thumb{position:relative;overflow:hidden}
.news-card__thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-card__thumb img{transform:scale(1.03)}
.news-card__thumb .pill{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--brand-dark)}
.news-card__body{padding:20px 22px 24px}
.news-card__body h3{font-size:17px;line-height:1.45;margin-bottom:10px;transition:color .25s ease;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-card__body h3{color:var(--brand)}
.news-card__body p{font-size:14px;color:var(--muted);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);border-top:1px solid var(--border);padding-top:12px}
.news-card--lead{grid-column:1/-1;display:grid;grid-template-columns:1.05fr 1fr;align-items:stretch}
.news-card--lead .news-card__thumb{height:100%}
.news-card--lead .news-card__thumb img{height:100%;aspect-ratio:auto;min-height:300px}
.news-card--lead .news-card__body{padding:34px;display:flex;flex-direction:column;justify-content:center}
.news-card--lead .news-card__body h3{font-size:24px;-webkit-line-clamp:3}
.news-card--lead .news-card__body p{font-size:15px;-webkit-line-clamp:3}
.news-card--lead .news-card__thumb .pill{position:static;display:inline-flex;margin-bottom:14px}
.empty-state{border:1px dashed var(--border);border-radius:var(--radius);background:#fff;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:40px 24px}
.empty-state i{font-size:28px;color:var(--brand)}
.empty-state p{color:var(--muted);margin:0}

/* ---------- FAQ ---------- */
.faq__list{max-width:920px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:8px 28px;box-shadow:var(--shadow-sm)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:0 0 auto;font-size:22px;line-height:1;color:var(--brand);transition:color .2s ease}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{content:"–";color:var(--accent)}
.faq-item__body{padding:0 0 22px;color:var(--muted);line-height:1.85;max-width:800px}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,var(--brand-dark),var(--brand));border-radius:var(--radius-lg);padding:48px;display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;color:#fff}
.cta-band h2{color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.82);margin:0}
.cta-band__actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-band__actions small{color:rgba(255,255,255,.7);font-size:13px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff}
.footer-brand .brand__mark{background:linear-gradient(135deg,var(--brand),#3E8CB0)}
.footer-brand strong{color:#fff;font-size:17px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.site-footer p{font-size:14px;color:rgba(255,255,255,.66)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.site-footer a{color:rgba(255,255,255,.78);font-size:14px}
.site-footer a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:48px;padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6)}

/* ---------- 底部转化条 ---------- */
.dockbar{position:fixed;left:0;right:0;bottom:0;z-index:55;background:#fff;box-shadow:var(--shadow-top)}
.dockbar__inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:68px}
.dockbar__inner p{margin:0;font-size:15px;color:var(--ink);font-weight:500}
.dockbar__actions{display:flex;align-items:center;gap:16px}
.dockbar__actions .link-plain{font-size:14px;font-weight:600;color:var(--brand-dark);display:inline-flex;align-items:center;gap:6px}
.dockbar__actions .link-plain:hover{color:var(--accent-dark)}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .hero__inner{gap:36px}
  .hero__stats{gap:28px}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-card--lead .news-card__thumb img{min-height:260px}
}
@media (max-width:992px){
  .search,.link-trend{display:none}
  .nav-toggle{display:inline-flex}
  .chanbar{display:none}
  .hero__inner{grid-template-columns:1fr;padding-top:52px;padding-bottom:64px}
  .hero__visual{order:-1}
  .hero__float{left:auto;right:14px;bottom:-16px}
  .bento{grid-template-columns:1fr;grid-template-rows:none}
  .bento__main{grid-row:auto}
  .scene__inner{grid-template-columns:1fr;gap:32px}
  .reviews{grid-template-columns:1fr}
  .reviews .review:nth-child(2){margin-top:0}
  .stat-strip{grid-template-columns:repeat(2,1fr);padding:28px 26px}
  .cta-band{grid-template-columns:1fr;padding:38px 28px}
}
@media (max-width:768px){
  body{padding-bottom:96px}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section__head{margin-bottom:28px}
  .topbar__inner{height:60px}
  .brand__text small{display:none}
  .brand__text strong{font-size:16px}
  .hero h1{font-size:28px}
  .hero__lead{font-size:16px}
  .hero__actions .btn{flex:1 1 100%}
  .hero__stats{gap:22px;width:100%}
  .hero__stats li{flex:1 1 40%}
  .news-grid{grid-template-columns:1fr}
  .news-card--lead{grid-template-columns:1fr}
  .news-card--lead .news-card__thumb img{min-height:220px;aspect-ratio:16/9}
  .news-card--lead .news-card__body{padding:24px}
  .news-card--lead .news-card__body h3{font-size:20px}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .faq__list{padding:4px 20px}
  .faq-item summary{font-size:16px;padding:18px 0}
  .dockbar__inner{height:auto;padding:12px 0;flex-direction:column;align-items:stretch;gap:10px}
  .dockbar__inner p{font-size:14px}
  .dockbar__actions{justify-content:space-between}
  .dockbar__actions .btn{flex:1 1 auto}
}
@media (max-width:520px){
  .hero__tag{font-size:12px}
  .hero__actions{flex-direction:column;align-items:stretch}
  .cta-band{padding:30px 20px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{width:100%}
  .stat-strip{grid-template-columns:1fr;gap:18px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
  --steel:#2F6F8F;
  --steel-dark:#1E4C63;
  --steel-light:#E8F1F4;
  --orange:#E07A3F;
  --orange-dark:#B85C28;
  --green:#6FA287;
  --bg:#F6F8F7;
  --surface:#FFFFFF;
  --surface-2:#EEF3F5;
  --line:#D8E2E6;
  --ink:#1F2A30;
  --ink-2:#5E6E76;
  --deep:#12313F;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --sh:0 8px 24px rgba(18,49,63,.08);
  --sh-hover:0 14px 34px rgba(18,49,63,.12);
  --sp:80px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
}
a{color:var(--steel);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--steel-dark);text-decoration:underline}
img{max-width:100%;height:auto;display:block}
button,input{font-family:inherit}
h1,h2,h3,h4{color:var(--ink);margin:0 0 .6em;font-weight:700;letter-spacing:0}
h1{font-size:clamp(30px,4vw,48px);line-height:1.2}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1em}
:focus-visible{outline:2px solid var(--steel);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:#fff;box-shadow:0 2px 14px rgba(18,49,63,.07)}
.topbar{border-bottom:1px solid var(--line)}
.topbar__inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);flex:0 0 auto}
.brand:hover{text-decoration:none;color:var(--steel-dark)}
.brand__mark{
  width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--steel),var(--steel-dark));color:#fff;font-size:17px;font-weight:700
}
.brand__name{font-size:17px;white-space:nowrap}
.brand__sub{display:block;font-size:11px;color:var(--ink-2);font-weight:400;line-height:1.2}
.topbar__search{flex:1 1 auto;max-width:420px;margin-left:auto;position:relative}
.topbar__search input{
  width:100%;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:0 14px 0 40px;background:var(--surface-2);color:var(--ink);font-size:14px;transition:all .2s ease
}
.topbar__search input::placeholder{color:#93a3ab}
.topbar__search input:focus{background:#fff;border-color:var(--steel);outline:none;box-shadow:0 0 0 3px rgba(47,111,143,.14)}
.topbar__search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--ink-2);font-size:14px}
.topbar__cta{
  flex:0 0 auto;height:42px;padding:0 18px;border-radius:var(--r-sm);background:var(--orange);color:#fff;
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;border:none;cursor:pointer;
  transition:all .2s ease
}
.topbar__cta:hover{background:var(--orange-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 10px 22px rgba(224,122,63,.28)}
.topbar__toggle{
  display:none;flex:0 0 auto;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--steel-dark);font-size:16px;cursor:pointer
}
.chanbar{background:#fff;border-bottom:1px solid var(--line)}
.chanbar__inner{display:flex;align-items:center;gap:18px;height:48px;flex-wrap:nowrap;overflow:hidden}
.chanbar__list{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0;flex:0 0 auto}
.chanbar__list a{
  display:inline-block;padding:6px 14px;border-radius:999px;font-size:15px;color:var(--ink-2);font-weight:500
}
.chanbar__list a:hover{background:var(--steel-light);color:var(--steel-dark);text-decoration:none}
.chanbar__list a.is-active{background:var(--steel);color:#fff;font-weight:600}
.hottags{display:flex;align-items:center;gap:10px;overflow-x:auto;white-space:nowrap;flex:1 1 auto;scrollbar-width:none}
.hottags::-webkit-scrollbar{display:none}
.hottags__label{font-size:13px;color:var(--ink-2);display:inline-flex;align-items:center;gap:5px}
.hottags__label i{color:var(--orange)}
.hottags a{
  font-size:13px;color:var(--steel-dark);background:var(--surface-2);border:1px solid var(--line);
  border-radius:999px;padding:4px 12px;position:relative
}
.hottags a::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--orange);
  display:inline-block;margin-right:6px;vertical-align:middle
}
.hottags a:hover{background:var(--steel-light);border-color:var(--steel);text-decoration:none}

/* breadcrumb + article head */
.crumb{font-size:14px;color:var(--ink-2);padding:22px 0 0}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--steel)}
.crumb span.sep{margin:0 6px;color:#a9b7be}
.article-wrap{padding:18px 0 var(--sp)}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh);padding:34px 38px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  padding:5px 14px;border-radius:999px;background:var(--steel-light);color:var(--steel-dark)
}
.badge--hot{background:rgba(224,122,63,.13);color:var(--orange-dark)}
.article-head h1{margin:16px 0 14px}
.meta-row{display:flex;flex-wrap:wrap;gap:16px;font-size:14px;color:var(--ink-2);padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:28px}
.meta-row i{color:var(--steel);margin-right:5px}

/* article body */
.article-body{max-width:820px;font-size:17px;line-height:1.9;color:#26333a}
.article-body p{margin:0 0 1.2em}
.article-body h2{margin:1.8em 0 .7em;padding-left:14px;border-left:5px solid var(--orange);font-size:clamp(22px,2.4vw,28px)}
.article-body h3{margin:1.5em 0 .5em;color:var(--steel-dark)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body li{margin-bottom:.5em}
.article-body img{border-radius:12px;margin:1.4em 0;box-shadow:var(--sh)}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:8px}
.article-body blockquote{
  margin:1.5em 0;padding:18px 22px;background:var(--surface-2);border-left:5px solid var(--steel);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--steel-dark)
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--surface-2);color:var(--steel-dark);font-weight:600}
.article-body a{border-bottom:1px solid rgba(47,111,143,.4)}
.article-body a:hover{text-decoration:none;border-bottom-color:var(--steel-dark)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-md);padding:48px 24px;text-align:center;background:var(--surface-2)
}
.empty-state i{font-size:30px;color:var(--steel);display:block;margin-bottom:12px}
.empty-state p{color:var(--ink-2);margin-bottom:18px}

/* sidebar */
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh);padding:22px;margin-bottom:22px}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--orange)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px}
.side-list li:last-child{border-bottom:none}
.side-list a{color:var(--ink)}
.side-list a:hover{color:var(--steel)}
.side-list .t{font-size:12px;color:var(--ink-2);display:block;margin-top:4px}
.side-cta{background:linear-gradient(135deg,var(--steel),var(--steel-dark));color:#fff;border:none}
.side-cta h3{color:#fff}
.side-cta p{color:rgba(255,255,255,.82);font-size:14px;margin-bottom:16px}
.side-cta .btn{width:100%;justify-content:center}

/* buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .2s ease
}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 26px rgba(224,122,63,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--steel);color:var(--steel-dark)}
.btn-ghost:hover{background:var(--steel-light);color:var(--steel-dark);text-decoration:none}
.btn-sm{height:40px;padding:0 16px;font-size:14px}

/* related */
.related{padding:0 0 var(--sp)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.sec-head p{color:var(--ink-2);margin:0;font-size:15px}
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.rel-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh);transition:transform .25s ease,box-shadow .25s ease;display:block;color:var(--ink)
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);text-decoration:none;color:var(--ink)}
.rel-card__img{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.rel-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .rel-card__img img{transform:scale(1.03)}
.rel-card__body{padding:16px 18px 20px}
.rel-card__tag{font-size:12px;color:var(--orange-dark);background:rgba(224,122,63,.12);border-radius:999px;padding:3px 10px;display:inline-block;margin-bottom:10px}
.rel-card h3{font-size:16px;line-height:1.5;margin:0 0 8px}
.rel-card:hover h3{color:var(--steel)}
.rel-card time{font-size:13px;color:var(--ink-2)}

/* faq */
.faq{padding:0 0 var(--sp)}
.faq-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-q{
  width:100%;background:none;border:none;text-align:left;padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;transition:color .2s ease
}
.faq-q:hover{color:var(--steel)}
.faq-q i{color:var(--steel);flex:0 0 auto;transition:transform .25s ease}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-item.is-open .faq-q{color:var(--steel-dark)}
.faq-a{display:none;padding:0 24px 22px;color:var(--ink-2);line-height:1.8}
.faq-item.is-open .faq-a{display:block}

/* cta band */
.cta-band{padding:0 0 var(--sp)}
.cta-band__inner{
  background:linear-gradient(135deg,var(--steel-dark),var(--steel));color:#fff;border-radius:var(--r-lg);
  padding:44px 46px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--sh)
}
.cta-band__inner h2{color:#fff;margin:0 0 8px}
.cta-band__inner p{color:rgba(255,255,255,.82);margin:0;max-width:640px}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}

/* footer */
.site-footer{background:var(--deep);color:rgba(255,255,255,.82);padding:60px 0 0;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.site-footer p{color:rgba(255,255,255,.7);font-size:14px;line-height:1.8}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{color:#fff;font-size:17px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.75);font-size:14px}
.footer-links a:hover{color:var(--orange);text-decoration:none}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 24px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6)
}

/* sticky bar */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;height:64px;background:#fff;box-shadow:0 -6px 18px rgba(18,49,63,.08);
  z-index:50;transition:transform .3s ease
}
.sticky-cta.is-hidden{transform:translateY(100%)}
.sticky-cta__inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.sticky-cta__text{font-size:14px;color:var(--ink-2);display:flex;align-items:center;gap:10px}
.sticky-cta__text i{color:var(--orange)}
.sticky-cta__actions{display:flex;align-items:center;gap:12px}
.sticky-cta__link{font-size:14px;color:var(--steel-dark);font-weight:600}
body{padding-bottom:84px}

/* off-canvas mobile */
.offcanvas-menu{
  position:fixed;inset:0 0 0 auto;width:min(86vw,340px);background:#fff;z-index:80;transform:translateX(105%);
  transition:transform .3s ease;box-shadow:-10px 0 34px rgba(18,49,63,.16);padding:22px 22px 40px;overflow-y:auto
}
.offcanvas-menu.is-open{transform:translateX(0)}
.offcanvas-backdrop{position:fixed;inset:0;background:rgba(18,49,63,.42);z-index:75;display:none}
.offcanvas-backdrop.is-open{display:block}
.offcanvas-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.offcanvas-close{width:38px;height:38px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;color:var(--steel-dark);cursor:pointer}
.offcanvas-nav{list-style:none;margin:0 0 22px;padding:0}
.offcanvas-nav li{border-bottom:1px solid var(--line)}
.offcanvas-nav a{display:block;padding:14px 4px;font-size:16px;color:var(--ink);font-weight:500}
.offcanvas-nav a.is-active{color:var(--steel);font-weight:700}
.offcanvas-tags{display:flex;flex-wrap:wrap;gap:10px}
.offcanvas-tags a{font-size:13px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:5px 12px;color:var(--steel-dark)}
.offcanvas-title{font-size:13px;color:var(--ink-2);margin:0 0 12px;font-weight:600}

@media screen and (max-width:1024px){
  .article-grid{grid-template-columns:1fr;gap:30px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  :root{--sp:64px}
}
@media screen and (max-width:992px){
  .topbar__search{display:none}
  .topbar__toggle{display:inline-flex;align-items:center;justify-content:center}
  .chanbar{overflow-x:auto}
  .chanbar__inner{overflow-x:auto}
}
@media screen and (max-width:768px){
  :root{--sp:48px}
  .container{padding:0 16px}
  .panel{padding:24px 20px}
  .article-body{font-size:16px}
  .rel-grid{grid-template-columns:1fr}
  .cta-band__inner{padding:30px 22px}
  .sticky-cta__text{display:none}
}
@media screen and (max-width:520px){
  .brand__name{font-size:15px}
  .brand__sub{display:none}
  .topbar__cta{display:none}
  .cta-band__actions .btn{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .sticky-cta__actions .btn{padding:0 16px}
}

/* roulang page: category1 */
:root{
  --brand:#2F6F8F;
  --brand-dark:#1E4C63;
  --brand-light:#E8F1F4;
  --accent:#E07A3F;
  --accent-dark:#B85C28;
  --green:#6FA287;
  --ink:#12313F;
  --bg:#F6F8F7;
  --surface:#FFFFFF;
  --surface-2:#EEF3F5;
  --border:#D8E2E6;
  --text:#1F2A30;
  --muted:#5E6E76;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-sm:0 4px 14px rgba(18,49,63,.06);
  --shadow:0 8px 24px rgba(18,49,63,.08);
  --shadow-lg:0 14px 34px rgba(18,49,63,.12);
  --sec:80px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:0;}
p{margin:0 0 1em;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--surface);
  box-shadow:0 2px 14px rgba(18,49,63,.08);
}
.topbar__inner{
  display:flex;
  align-items:center;
  gap:22px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-weight:700;
  flex:0 0 auto;
}
.brand:hover{color:var(--brand-dark);}
.brand__mark{
  width:34px;
  height:34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:16px;
  font-weight:700;
  flex:0 0 auto;
}
.brand__text{font-size:17px;white-space:nowrap;}

.topbar__tools{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:14px;
}
.searchbox{position:relative;display:flex;align-items:center;}
.searchbox i{
  position:absolute;
  left:14px;
  font-size:13px;
  color:var(--muted);
  pointer-events:none;
}
.searchbox input{
  height:42px;
  width:238px;
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  background:var(--surface-2);
  padding:0 14px 0 38px;
  font-size:14px;
  color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.searchbox input::placeholder{color:#8B9BA3;}
.searchbox input:focus{
  outline:none;
  background:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(47,111,143,.16);
}
.topbar__link{
  font-size:14px;
  color:var(--muted);
  font-weight:600;
}
.topbar__link:hover{color:var(--brand);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn--primary{background:var(--accent);color:#fff;}
.btn--primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(184,92,40,.28);}
.btn--ghost{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn--ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn--light{background:#fff;color:var(--brand-dark);}
.btn--light:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px);}
.btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.55;pointer-events:none;}

.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#fff;
  color:var(--brand-dark);
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--brand-light);border-color:var(--brand);}
.hamburger{display:none;}

/* 频道行 */
.chanbar{border-top:1px solid var(--border);background:#fff;}
.chanbar__inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:48px;
}
.chanbar__list{display:flex;align-items:center;gap:4px;flex:0 0 auto;}
.chanbar__list a{
  display:block;
  padding:6px 15px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  color:var(--muted);
  transition:background .2s ease,color .2s ease;
}
.chanbar__list a:hover{background:var(--brand-light);color:var(--brand-dark);}
.chanbar__list a.is-active{background:var(--brand);color:#fff;}
.chanbar__list a.is-active:hover{background:var(--brand-dark);color:#fff;}

.hottags{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  white-space:nowrap;
  scrollbar-width:none;
  padding:4px 0;
}
.hottags::-webkit-scrollbar{display:none;}
.hottags__label{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--muted);
  flex:0 0 auto;
}
.hottags__label i{color:var(--accent);}
.hottags a{
  position:relative;
  display:inline-flex;
  align-items:center;
  font-size:13px;
  color:var(--brand-dark);
  background:var(--surface-2);
  border:1px solid var(--border);
  padding:3px 13px 3px 11px;
  border-radius:var(--r-pill);
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.hottags a::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
  display:inline-block;
  margin-right:7px;
}
.hottags a:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark);}

/* 移动抽屉 */
.mdrawer{position:fixed;inset:0;z-index:90;display:none;}
.mdrawer.is-open{display:block;}
.mdrawer__mask{position:absolute;inset:0;background:rgba(18,49,63,.5);}
.mdrawer__panel{
  position:absolute;
  top:0;right:0;bottom:0;
  width:min(88vw,340px);
  background:#fff;
  padding:20px;
  overflow-y:auto;
  box-shadow:-12px 0 34px rgba(18,49,63,.24);
}
.mdrawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.mdrawer__nav{display:flex;flex-direction:column;gap:6px;margin:18px 0;}
.mdrawer__nav a{
  display:block;
  padding:11px 14px;
  border-radius:var(--r-sm);
  font-weight:600;
  color:var(--text);
  background:var(--surface-2);
}
.mdrawer__nav a:hover{background:var(--brand-light);color:var(--brand-dark);}
.mdrawer__nav a.is-active{background:var(--brand);color:#fff;}
.mdrawer__tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.mdrawer__tags span{width:100%;font-size:13px;color:var(--muted);}
.mdrawer__tags a{
  font-size:13px;
  color:var(--brand-dark);
  background:var(--surface-2);
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  padding:4px 13px;
}
.searchbox--block{margin-top:6px;}
.searchbox--block input{width:100%;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:44px 0 64px;
  background:linear-gradient(180deg,#F0F5F7 0%,var(--bg) 100%);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(47,111,143,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(47,111,143,.07) 1px,transparent 1px);
  background-size:52px 52px;
  pointer-events:none;
}
.page-hero__inner{position:relative;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:#B4C1C7;}

.page-hero__grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-light);
  border-radius:var(--r-pill);
  padding:5px 14px;
}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.2;
  margin:16px 0 16px;
}
.page-hero .lead{
  font-size:17px;
  color:var(--muted);
  max-width:620px;
  line-height:1.85;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

.chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.chips a{
  display:inline-block;
  padding:7px 17px;
  border-radius:var(--r-pill);
  border:1px solid var(--border);
  background:#fff;
  color:var(--muted);
  font-size:14px;
  font-weight:600;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.chips a:hover{border-color:var(--brand);color:var(--brand);}
.chips a.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}

.page-hero__media{
  position:relative;
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--shadow-lg);
  background:#fff;
}
.page-hero__media img{
  display:block;
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.media-badge{
  position:absolute;
  left:16px;
  bottom:16px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.94);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:600;
  padding:8px 14px;
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-sm);
}
.media-badge i{color:var(--accent);}

/* ---------- 数据条 ---------- */
.stats-band{
  position:relative;
  margin-top:-28px;
  z-index:2;
}
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:26px 28px;
}
.stat{display:flex;flex-direction:column;gap:4px;border-right:1px solid var(--border);padding-right:18px;}
.stat:last-child{border-right:0;padding-right:0;}
.stat b{font-size:26px;color:var(--accent);line-height:1.2;font-weight:700;}
.stat span{font-size:13.5px;color:var(--muted);}

/* ---------- 通用区块 ---------- */
.section{padding:var(--sec) 0;}
.section--alt{background:var(--surface-2);}
.section--tight{padding-top:56px;}
.section-head{max-width:740px;margin-bottom:38px;}
.section-head h2{font-size:clamp(24px,3vw,34px);margin:14px 0 12px;}
.section-head p{color:var(--muted);margin:0;font-size:16px;line-height:1.85;}
.section-head--row{
  max-width:none;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
}
.section-head--row .section-head__text{max-width:680px;}

/* ---------- 卖点 bento ---------- */
.bento{
  display:grid;
  grid-template-columns:1.5fr 1fr;
  grid-template-rows:auto auto;
  gap:22px;
}
.bento__main{
  grid-row:span 2;
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.bento__main:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.bento__main img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover;}
.bento__body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;}
.bento__body h3{font-size:21px;}
.bento__body p{color:var(--muted);margin:0;font-size:15px;line-height:1.8;}
.bento__side{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:22px 24px;
  box-shadow:var(--shadow-sm);
  display:flex;
  flex-direction:column;
  gap:9px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.bento__side:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#C6D6DC;}
.bento__side h3{font-size:18px;}
.bento__side p{color:var(--muted);margin:0;font-size:14.5px;line-height:1.8;}
.icon-badge{
  width:38px;
  height:38px;
  border-radius:11px;
  display:grid;
  place-items:center;
  background:var(--brand-light);
  color:var(--brand);
  font-size:16px;
}
.icon-badge--accent{background:#FBEADE;color:var(--accent-dark);}
.icon-badge--green{background:#E6F0EA;color:#4C7D64;}
.tlink{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  margin-top:auto;
}
.tlink i{font-size:12px;transition:transform .2s ease;}
.tlink:hover i{transform:translateX(3px);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin:0;}
.timeline::before{
  content:"";
  position:absolute;
  left:113px;
  top:10px;
  bottom:10px;
  width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,rgba(47,111,143,.15) 100%);
}
.tl-item{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:34px;
  padding-bottom:22px;
  position:relative;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::after{
  content:"";
  position:absolute;
  left:107px;
  top:26px;
  width:14px;
  height:14px;
  border-radius:50%;
  background:#fff;
  border:3px solid var(--brand);
  box-shadow:0 0 0 4px rgba(47,111,143,.10);
}
.tl-time{
  text-align:right;
  font-weight:700;
  color:var(--brand-dark);
  font-size:15px;
  padding-top:20px;
  line-height:1.4;
}
.tl-time small{display:block;font-size:12.5px;color:var(--muted);font-weight:500;margin-top:2px;}
.tl-body{
  display:grid;
  grid-template-columns:176px 1fr;
  gap:20px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:16px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.tl-body:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#C6D6DC;}
.tl-body img{
  display:block;
  width:100%;
  height:100%;
  min-height:118px;
  object-fit:cover;
  border-radius:var(--r-sm);
}
.tl-text{display:flex;flex-direction:column;gap:8px;}
.tl-text h3{font-size:17.5px;line-height:1.4;}
.tl-text p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.8;}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:2px;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12.5px;
  font-weight:600;
  padding:3px 11px;
  border-radius:var(--r-pill);
  background:var(--brand-light);
  color:var(--brand-dark);
}
.badge--accent{background:#FBEADE;color:var(--accent-dark);}
.badge--green{background:#E6F0EA;color:#4C7D64;}
.tl-link{font-size:13.5px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.tl-link i{font-size:11px;transition:transform .2s ease;}
.tl-link:hover i{transform:translateX(3px);}
.timeline-note{
  margin-top:26px;
  font-size:13.5px;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:8px;
}
.timeline-note i{color:var(--green);}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.scene-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:26px 24px;
  box-shadow:var(--shadow-sm);
  display:flex;
  flex-direction:column;
  gap:12px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#C6D6DC;}
.scene-card h3{font-size:18px;}
.scene-card p{color:var(--muted);font-size:14.5px;line-height:1.8;margin:0;}
.scene-card ul{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.scene-card li{display:flex;gap:9px;font-size:14px;color:var(--text);line-height:1.7;}
.scene-card li i{color:var(--brand);font-size:12px;margin-top:6px;}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#C6D6DC;}
.card__media{position:relative;overflow:hidden;}
.card__media img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.card:hover .card__media img{transform:scale(1.03);}
.card__media .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--brand-dark);}
.card__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__body h3{font-size:18px;line-height:1.45;}
.card:hover .card__body h3{color:var(--brand);}
.card__body p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.8;}

/* ---------- FAQ ---------- */
.faq{max-width:920px;}
.faq__item{border-bottom:1px solid var(--border);}
.faq__q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  background:none;
  border:0;
  padding:21px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  text-align:left;
  cursor:pointer;
  transition:color .2s ease;
}
.faq__q:hover{color:var(--brand);}
.faq__q .faq__icon{
  flex:0 0 auto;
  width:28px;
  height:28px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:var(--surface-2);
  color:var(--brand);
  font-size:12px;
  transition:background .2s ease,color .2s ease,transform .25s ease;
}
.faq__item.is-open .faq__q{color:var(--brand);}
.faq__item.is-open .faq__icon{background:var(--brand);color:#fff;transform:rotate(180deg);}
.faq__a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq__a p{margin:0 0 22px;color:var(--muted);font-size:15px;line-height:1.85;padding-right:44px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--r-lg);
  padding:52px;
  overflow:hidden;
  background:linear-gradient(135deg,var(--ink) 0%,var(--brand-dark) 100%);
  color:#fff;
  display:grid;
  grid-template-columns:1.5fr auto;
  gap:32px;
  align-items:center;
  box-shadow:var(--shadow-lg);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;
  background-position:center;
  opacity:.18;
  pointer-events:none;
}
.cta-band__text{position:relative;}
.cta-band__text h2{font-size:clamp(22px,2.6vw,30px);color:#fff;margin-bottom:12px;}
.cta-band__text p{color:rgba(255,255,255,.82);margin:0;font-size:15.5px;line-height:1.85;max-width:640px;}
.cta-band__actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#D6E3E8;
  padding:64px 0 104px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.15fr;
  gap:36px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
  color:#fff;
  font-size:17px;
}
.site-footer h4{color:#fff;font-size:16px;margin:0 0 16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:#B9CDD6;font-size:14px;}
.footer-links a:hover{color:var(--accent);}
.site-footer p{color:#A9C0CA;font-size:14px;line-height:1.85;margin:0 0 1em;}
.site-footer p:last-child{margin-bottom:0;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  margin-top:42px;
  padding-top:20px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:#8FA9B4;
}

/* ---------- 底部转化条 ---------- */
.cta-dock{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:40;
  background:#fff;
  border-top:1px solid var(--border);
  box-shadow:0 -6px 18px rgba(18,49,63,.08);
}
.cta-dock__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:64px;
  padding-top:10px;
  padding-bottom:10px;
}
.cta-dock p{margin:0;font-size:14px;color:var(--muted);}
.cta-dock__actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 22px;}
}
@media (max-width:1024px){
  :root{--sec:64px;}
  .page-hero__grid{grid-template-columns:1fr;gap:34px;}
  .page-hero__media{order:-1;}
  .bento{grid-template-columns:1fr;}
  .bento__main{grid-row:auto;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:0;padding-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--border);padding-bottom:16px;}
  .scene-grid,.card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{grid-template-columns:1fr;padding:40px;}
}
@media (max-width:992px){
  .searchbox,.topbar__link{display:none;}
  .hamburger{display:inline-flex;}
  .chanbar__inner{overflow:hidden;}
  .chanbar__list{overflow-x:auto;scrollbar-width:none;}
  .chanbar__list::-webkit-scrollbar{display:none;}
  .hottags{display:none;}
}
@media (max-width:768px){
  :root{--sec:48px;}
  .container{padding:0 16px;}
  .brand__text{font-size:16px;}
  .page-hero{padding:28px 0 48px;}
  .page-hero h1{font-size:clamp(26px,7vw,34px);}
  .page-hero .lead{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 auto;}
  .stats{padding:20px;gap:14px;}
  .stat b{font-size:22px;}
  .scene-grid,.card-grid{grid-template-columns:1fr;}
  .timeline::before{left:6px;}
  .tl-item{grid-template-columns:1fr;gap:10px;padding-left:26px;padding-bottom:18px;}
  .tl-item::after{left:0;}
  .tl-time{text-align:left;padding-top:0;font-size:14px;}
  .tl-body{grid-template-columns:1fr;gap:14px;}
  .tl-body img{aspect-ratio:16/9;min-height:0;height:auto;}
  .faq__a p{padding-right:0;}
  .cta-band{padding:30px 22px;border-radius:var(--r-md);}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 120px;}
  .cta-dock__inner{min-height:60px;}
  .cta-dock p{display:none;}
}
@media (max-width:520px){
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0;padding-right:0;border-bottom:1px solid var(--border);padding-bottom:14px;}
  .stat:last-child{border-bottom:0;padding-bottom:0;}
  .cta-dock__actions{width:100%;}
  .cta-dock__actions .btn{flex:1 1 auto;}
  .cta-band__actions{flex-direction:column;}
  .cta-band__actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --brand:#2F6F8F;
  --brand-dark:#1E4C63;
  --brand-light:#E8F1F4;
  --accent:#E07A3F;
  --accent-dark:#B85C28;
  --green:#6FA287;
  --bg:#F6F8F7;
  --surface:#FFFFFF;
  --surface-alt:#EEF3F5;
  --line:#D8E2E6;
  --text:#1F2A30;
  --muted:#5E6E76;
  --ink:#12313F;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:20px;
  --shadow:0 8px 24px rgba(18,49,63,.08);
  --shadow-hover:0 14px 34px rgba(18,49,63,.12);
  --space:80px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;color:var(--ink)}
h1{font-size:clamp(30px,4vw,48px);line-height:1.2}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

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

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 4px 16px rgba(18,49,63,.06)}
.topbar__inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--ink);letter-spacing:0}
.brand:hover{color:var(--brand-dark)}
.brand__mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;
}
.brand__text{white-space:nowrap}
.search{position:relative;margin-left:auto;width:min(320px,36vw)}
.search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:14px}
.search input{
  width:100%;height:42px;padding:0 14px 0 40px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--surface-alt);transition:box-shadow .2s ease,border-color .2s ease,background-color .2s ease;
}
.search input::placeholder{color:#8DA0A9}
.search input:focus{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,111,143,.16);outline:none}
.topbar__cta{flex:0 0 auto}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--brand-dark);background:#fff}
.nav-toggle:hover{background:var(--brand-light)}

.chanbar{background:var(--surface-alt);border-top:1px solid var(--line)}
.chanbar__inner{display:flex;align-items:center;gap:20px;height:48px}
.chanbar__list{display:flex;align-items:center;gap:4px}
.chanbar__list a{
  display:inline-block;padding:7px 15px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text);white-space:nowrap;
}
.chanbar__list a:hover{background:var(--brand-light);color:var(--brand-dark)}
.chanbar__list a.is-active{background:var(--brand);color:#fff}
.hottags{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;white-space:nowrap;scrollbar-width:none}
.hottags::-webkit-scrollbar{display:none}
.hottags__label{font-size:13px;color:var(--accent);font-weight:600;display:inline-flex;align-items:center;gap:5px}
.hottags a{font-size:13px;color:var(--muted);padding:4px 11px;border:1px solid var(--line);border-radius:999px;background:#fff}
.hottags a:hover{color:var(--brand-dark);border-color:var(--brand);background:var(--brand-light)}

/* drawer */
.drawer{position:fixed;inset:0;z-index:120;display:none}
.drawer.is-open{display:block}
.drawer__mask{position:absolute;inset:0;background:rgba(18,49,63,.45)}
.drawer__panel{
  position:absolute;top:0;right:0;height:100%;width:min(320px,86vw);
  background:#fff;padding:20px;box-shadow:-10px 0 30px rgba(18,49,63,.18);
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:8px}
.drawer__head strong{font-size:16px;color:var(--ink)}
.drawer__close{width:36px;height:36px;border-radius:10px;background:var(--surface-alt);color:var(--brand-dark)}
.drawer__panel a.drawer__link{padding:12px 14px;border-radius:var(--radius-sm);color:var(--text);font-weight:500}
.drawer__panel a.drawer__link:hover{background:var(--brand-light);color:var(--brand-dark)}
.drawer__panel a.drawer__link.is-active{background:var(--brand);color:#fff}
.drawer__sub{font-size:13px;color:var(--muted);margin:14px 0 6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(224,122,63,.28)}
.btn--primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(224,122,63,.34)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:#fff;color:var(--brand-dark);border-color:var(--brand)}
.btn--ghost:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px)}
.btn--dark{background:var(--brand);color:#fff}
.btn--dark:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.55;pointer-events:none}

/* ---------- generic ---------- */
.section{padding:var(--space) 0}
.section--tight{padding:56px 0}
.section--alt{background:var(--surface)}
.section__head{max-width:760px;margin-bottom:36px}
.section__head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:13px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-light);border-radius:999px;padding:5px 14px;
}
.eyebrow i{color:var(--accent)}
.section__head h2{margin-bottom:12px}
.section__head p{color:var(--muted);font-size:16px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;padding:4px 11px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-dark);
}
.tag--accent{background:rgba(224,122,63,.14);color:var(--accent-dark)}
.tag--green{background:rgba(111,162,135,.16);color:#3F7A5D}
.tag--outline{background:#fff;border:1px solid var(--line);color:var(--muted)}

/* ---------- hero ---------- */
.topic-hero{position:relative;padding:64px 0 60px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);overflow:hidden}
.topic-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(47,111,143,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(47,111,143,.07) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.crumbs{position:relative;display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:20px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs i{font-size:10px;color:#A9BAC2}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-copy h1{margin-bottom:18px}
.hero-copy h1 .h1-brand{display:block;font-size:clamp(15px,1.6vw,19px);font-weight:600;color:var(--accent);letter-spacing:0;margin-bottom:10px}
.hero-lead{font-size:17px;color:var(--muted);max-width:56ch}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 28px}
.chips .tag{background:#fff;border:1px solid var(--line);color:var(--muted)}
.chips .tag:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-light)}
.chips .tag.is-on{background:var(--brand);border-color:var(--brand);color:#fff}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:36px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.hero-metrics .num{display:block;font-size:30px;font-weight:700;color:var(--accent);line-height:1.1}
.hero-metrics .lab{font-size:13px;color:var(--muted)}
.hero-visual{position:relative}
.hero-visual img{width:100%;border-radius:var(--radius-lg);box-shadow:var(--shadow);aspect-ratio:4/3.2;object-fit:cover}
.hero-visual__badge{
  position:absolute;left:-14px;bottom:22px;
  background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);
  padding:14px 18px;display:flex;align-items:center;gap:12px;border:1px solid var(--line);
}
.hero-visual__badge i{width:34px;height:34px;border-radius:10px;background:var(--brand-light);color:var(--brand-dark);display:flex;align-items:center;justify-content:center}
.hero-visual__badge strong{display:block;font-size:15px;color:var(--ink)}
.hero-visual__badge span{font-size:12.5px;color:var(--muted)}

/* ---------- directions ---------- */
.dir-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.dir-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.dir-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C3D5DC}
.dir-card__ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);font-size:18px;margin-bottom:16px;
}
.dir-card:nth-child(2) .dir-card__ico{background:rgba(224,122,63,.14);color:var(--accent-dark)}
.dir-card:nth-child(3) .dir-card__ico{background:rgba(111,162,135,.16);color:#3F7A5D}
.dir-card h3{margin-bottom:10px}
.dir-card p{color:var(--muted);font-size:15px}
.dir-card__link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;margin-top:14px}
.dir-card__link i{font-size:11px;transition:transform .2s ease}
.dir-card:hover .dir-card__link i{transform:translateX(3px)}

/* ---------- magazine layout ---------- */
.topic-layout{display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:40px;align-items:start}
.mag-feature{
  position:relative;display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease;
}
.mag-feature:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.mag-feature__media{position:relative;overflow:hidden}
.mag-feature__media img{width:100%;aspect-ratio:16/8.6;object-fit:cover;transition:transform .5s ease}
.mag-feature:hover .mag-feature__media img{transform:scale(1.03)}
.mag-feature__media .tag{position:absolute;left:16px;top:16px;background:#fff;color:var(--brand-dark);box-shadow:0 4px 12px rgba(18,49,63,.12)}
.mag-feature__body{padding:26px 28px 28px}
.mag-feature__body h3{font-size:clamp(20px,2.2vw,26px);margin:12px 0 12px;color:var(--ink)}
.mag-feature:hover .mag-feature__body h3{color:var(--brand)}
.mag-feature__body p{color:var(--muted);font-size:15.5px}
.mag-feature__meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted);margin-top:18px;flex-wrap:wrap}
.mag-feature__meta .dot{width:4px;height:4px;border-radius:50%;background:#B9C8CE}

.mag-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:24px}
.mag-card{
  display:flex;gap:16px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.mag-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C3D5DC}
.mag-card__thumb{flex:0 0 104px;width:104px;border-radius:12px;overflow:hidden}
.mag-card__thumb img{width:100%;height:100%;aspect-ratio:4/3.4;object-fit:cover;transition:transform .45s ease}
.mag-card:hover .mag-card__thumb img{transform:scale(1.04)}
.mag-card__body{min-width:0}
.mag-card__body h3{font-size:16.5px;font-weight:600;margin:8px 0 6px;line-height:1.45}
.mag-card:hover .mag-card__body h3{color:var(--brand)}
.mag-card__body p{font-size:13.5px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mag-card__time{font-size:12.5px;color:#8DA0A9;display:block;margin-top:8px}

/* ---------- sidebar ---------- */
.side-index{position:sticky;top:130px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.side-card h4{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h4 i{color:var(--accent);font-size:13px}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:var(--radius-sm);font-size:14.5px;color:var(--text);
}
.side-nav a:hover{background:var(--brand-light);color:var(--brand-dark)}
.side-nav a.is-on{background:var(--brand);color:#fff}
.side-nav a span.count{font-size:12px;color:var(--muted)}
.side-nav a.is-on span.count{color:rgba(255,255,255,.8)}
.side-rank li{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.side-rank li:last-child{border-bottom:0;padding-bottom:0}
.side-rank .idx{
  flex:0 0 22px;height:22px;border-radius:7px;background:var(--surface-alt);color:var(--brand-dark);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.side-rank li:nth-child(1) .idx{background:var(--accent);color:#fff}
.side-rank a{color:var(--text)}
.side-rank a:hover{color:var(--brand-dark)}
.side-back{display:block;text-align:center}

/* ---------- steps ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.step{padding:28px 26px 26px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step__num{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.06em}
.step h3{font-size:17px;margin:12px 0 8px}
.step p{font-size:14.5px;color:var(--muted);margin:0}

/* ---------- dark band ---------- */
.band{
  position:relative;color:#fff;background-color:var(--ink);
  background-image:linear-gradient(90deg,rgba(18,49,63,.94) 0%,rgba(18,49,63,.82) 58%,rgba(18,49,63,.62) 100%),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  padding:64px 0;
}
.band h2{color:#fff}
.band p{color:rgba(255,255,255,.78)}
.band__grid{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
.band__stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.stat{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:20px;
}
.stat strong{display:block;font-size:30px;line-height:1.1;color:var(--accent);font-weight:700}
.stat span{font-size:13.5px;color:rgba(255,255,255,.78);display:block;margin-top:6px}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;cursor:pointer;font-size:16.5px;font-weight:600;color:var(--ink);list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  color:var(--brand);flex:0 0 auto;transition:transform .2s ease;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{content:"\f068"}
.faq-item .faq-a{padding:0 4px 22px;color:var(--muted);font-size:15px;line-height:1.85}
.faq-aside{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.faq-aside h3{margin-bottom:12px}
.faq-aside p{color:var(--muted);font-size:14.5px}
.faq-aside .btn{margin-top:16px;width:100%}

/* ---------- cta ---------- */
.cta-band{
  position:relative;color:#fff;overflow:hidden;border-radius:var(--radius-lg);
  background-image:linear-gradient(100deg,rgba(30,76,99,.95) 0%,rgba(30,76,99,.78) 60%,rgba(47,111,143,.62) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:44px 40px;box-shadow:var(--shadow-hover);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.82);margin:0;max-width:52ch}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:64px 0 26px;margin-top:var(--space)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{color:#fff;font-size:17px}
.footer-brand .brand__mark{background:linear-gradient(135deg,var(--brand) 0%,#2F6F8F 100%)}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.68)}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.76);font-size:14.5px}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.58);
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  :root{--space:72px}
  .topic-layout{grid-template-columns:minmax(0,1fr) 288px;gap:32px}
}
@media (max-width:992px){
  :root{--space:64px}
  .topbar__cta{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .chanbar__inner{height:auto;padding:10px 0;flex-wrap:wrap;gap:12px}
  .chanbar__list{order:1}
  .hottags{order:2;flex:1 1 100%;margin-left:0;padding-bottom:2px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:-1}
  .hero-visual__badge{left:12px}
  .topic-layout{grid-template-columns:1fr;gap:32px}
  .side-index{position:static;order:2}
  .dir-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step{border-bottom:1px solid var(--line)}
  .step:nth-child(2n){border-right:0}
  .band__grid{grid-template-columns:1fr;gap:30px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{order:2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--space:52px}
  .container{padding:0 16px}
  .search{display:none}
  .brand__text{font-size:17px}
  .mag-list{grid-template-columns:1fr}
  .hero-metrics{gap:24px 30px}
  .hero-metrics .num{font-size:25px}
  .cta-band{padding:34px 24px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .mag-feature__body{padding:22px 20px 24px}
}
@media (max-width:520px){
  .steps-grid{grid-template-columns:1fr}
  .step{border-right:0}
  .hero-actions .btn{width:100%}
  .hero-visual__badge{position:static;margin-top:14px;left:auto}
  .mag-card__thumb{flex-basis:84px;width:84px}
  .band__stats{grid-template-columns:1fr}
}