/* roulang page: index */
:root{
  --ink:#0B1F2A;
  --ink-2:#3B5566;
  --ink-3:#7C8F9B;
  --primary:#0F5570;
  --primary-700:#0A4257;
  --primary-100:#E4EFF4;
  --accent:#14A38B;
  --accent-ink:#0E7C69;
  --gold:#D9A24A;
  --bg:#F6F9FA;
  --surface:#FFFFFF;
  --line:#E3EBEF;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(11,31,42,.04), 0 12px 28px -14px rgba(11,31,42,.16);
  --shadow-lg:0 1px 2px rgba(11,31,42,.04), 0 26px 52px -20px rgba(11,31,42,.24);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:Inter,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,opacity .18s ease}
a:hover{color:var(--primary-700)}
h1,h2,h3,h4{margin:0;line-height:1.32;color:var(--ink);font-weight:600}
h1{font-size:40px;line-height:1.2;font-weight:700;letter-spacing:.01em}
h2{font-size:30px;line-height:1.3}
h3{font-size:22px;line-height:1.4}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head p{color:var(--ink-2);font-size:15px;margin-top:8px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--primary);font-weight:600;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.num{font-variant-numeric:tabular-nums}

/* 顶栏 */
.topbar{background:var(--primary-100);border-bottom:1px solid rgba(15,85,112,.10);height:36px;display:flex;align-items:center}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-slogan{font-size:13px;color:var(--primary-700);font-weight:600}
.topbar-links{display:flex;gap:20px;font-size:13px}
.topbar-links a{color:var(--primary-700)}
.topbar-links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:80;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .22s ease}
.site-header.is-scrolled{box-shadow:0 14px 34px -22px rgba(11,31,42,.40)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--primary-100)}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.logo-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.08em}
.logo:hover .logo-text strong{color:var(--primary)}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15px;font-weight:500;color:var(--ink-2)}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;background:var(--primary);border-radius:2px;transform:scaleX(0);transition:transform .22s ease}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}

.nav-right{display:flex;align-items:center;gap:10px}
.nav-more{position:relative}
.nav-more::after{content:"";position:absolute;left:0;right:0;top:100%;height:18px}
.nav-more-btn{display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 14px;border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:14px;font-weight:500;cursor:pointer;transition:border-color .18s,color .18s,background .18s}
.nav-more-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100)}
.nav-more-btn .caret{transition:transform .2s ease}
.nav-more:hover .nav-more-btn .caret,.nav-more:focus-within .nav-more-btn .caret{transform:rotate(180deg)}
.nav-icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--surface);color:var(--ink-2);cursor:pointer;transition:border-color .18s,color .18s,background .18s}
.nav-icon-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100)}
.nav-cta{height:40px;padding:0 18px;font-size:14px}

/* Mega 面板 */
.mega-panel{position:absolute;top:calc(100% + 16px);right:0;width:720px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:28px;display:grid;grid-template-columns:1.05fr 1.1fr .85fr;gap:26px;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .16s ease,transform .16s ease,visibility .16s ease;z-index:90}
.nav-more:hover .mega-panel,.nav-more:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:12px;letter-spacing:.12em;color:var(--ink-3);font-weight:600;margin-bottom:14px}
.mega-list li+li{margin-top:10px}
.mega-link{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);padding:6px 8px;border-radius:8px;margin-left:-8px;transition:background .18s,color .18s}
.mega-link:hover{background:var(--primary-100);color:var(--primary)}
.mega-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex-shrink:0}
.mega-post{display:block;padding:9px 10px;border-radius:10px;margin-left:-10px;transition:background .18s}
.mega-post:hover{background:var(--primary-100)}
.mega-post strong{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.55}
.mega-post span{font-size:12px;color:var(--ink-3)}
.mega-card{display:block;border-radius:14px;overflow:hidden;border:1px solid var(--line);transition:box-shadow .2s,transform .2s}
.mega-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.mega-card img{width:100%;height:104px;object-fit:cover}
.mega-card-body{padding:12px 14px}
.mega-card-body strong{display:block;font-size:14px;color:var(--ink);font-weight:600;line-height:1.5}
.mega-card-body span{font-size:12px;color:var(--ink-3)}

/* 汉堡与抽屉 */
.hamburger{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--surface);cursor:pointer}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.drawer{position:fixed;inset:0;z-index:120;visibility:hidden;pointer-events:none}
.drawer.is-open{visibility:visible;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(11,31,42,.45);opacity:0;transition:opacity .22s ease}
.drawer.is-open .drawer-mask{opacity:1}
.drawer-panel{position:absolute;top:0;right:0;height:100%;width:min(360px,88%);background:var(--surface);box-shadow:var(--shadow-lg);padding:22px;overflow-y:auto;transform:translateX(100%);transition:transform .26s ease}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:40px;height:40px;border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:20px;line-height:1;cursor:pointer}
.drawer-close:hover{border-color:var(--primary);color:var(--primary)}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;padding:16px 4px;font-size:16px;font-weight:500;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary)}
.drawer-sub{padding:10px 4px 16px;border-bottom:1px solid var(--line)}
.drawer-sub a{display:block;padding:9px 0;font-size:14px;color:var(--ink-2);border:0}
.drawer-cta{margin-top:22px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-700);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(15,85,112,.65)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:var(--surface);color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-100);color:var(--primary-700);transform:translateY(-1px)}
.btn-light{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.55)}
.btn-light:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-1px)}
.btn .star{color:var(--gold);font-size:16px;line-height:1}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary)}
.link-more .arrow{display:inline-block;transition:transform .18s ease}
.link-more:hover .arrow{transform:translateX(3px)}
.link-more:hover{text-decoration:underline;text-underline-offset:5px}

/* 徽章 */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;background:#E6F5F1;color:var(--accent-ink);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge-soft{background:var(--primary-100);color:var(--primary-700)}
.count-badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:13px;font-weight:600}

/* HERO */
.hero{position:relative;min-height:520px;display:flex;align-items:center;color:#fff;background-image:linear-gradient(90deg,rgba(15,85,112,.88),rgba(11,31,42,.58)),url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.035) 0 1px,transparent 1px 26px);pointer-events:none}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:80px 24px 76px;width:100%;max-width:var(--container);margin:0 auto}
.hero-tag{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.32);font-size:12.5px;letter-spacing:.06em;color:#EAF4F8}
.hero h1{color:#fff;font-size:40px;line-height:1.26;margin:20px 0 16px;max-width:15em}
.hero-sub{font-size:16px;color:rgba(255,255,255,.86);max-width:30em;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;margin-top:38px;padding-top:24px;border-top:1px solid rgba(255,255,255,.22)}
.stat{padding:0 22px;border-left:1px solid rgba(255,255,255,.22)}
.stat:first-child{padding-left:0;border-left:0}
.stat strong{display:block;font-size:22px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;line-height:1.4}
.stat span{font-size:12px;color:rgba(255,255,255,.72);letter-spacing:.04em}
.hero-visual{display:flex;justify-content:flex-end}
.hero-card{width:100%;max-width:380px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 30px 60px -24px rgba(0,0,0,.55);transform:rotate(-1deg);background:#fff}
.hero-card img{width:100%;height:250px;object-fit:cover}
.hero-card-body{padding:18px 20px 20px;background:#fff}
.hero-card-body strong{display:block;font-size:16px;color:var(--ink);font-weight:600;line-height:1.5}
.hero-card-body span{display:block;font-size:13px;color:var(--ink-3);margin-top:6px}

/* 目录索引 */
.directory{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
.dir-row{position:relative;display:grid;grid-template-columns:70px minmax(0,1fr) 250px 104px 30px;align-items:center;gap:24px;padding:26px 26px 26px 30px;border-bottom:1px solid var(--line);transition:background .2s ease}
.dir-row:last-child{border-bottom:0}
.dir-row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--primary);transform:scaleY(0);transform-origin:center;transition:transform .22s ease}
.dir-row:hover{background:var(--primary-100)}
.dir-row:hover::before{transform:scaleY(1)}
.dir-index{font-size:22px;font-weight:700;color:var(--gold);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.dir-main h3{font-size:20px;margin-bottom:6px}
.dir-row:hover .dir-main h3{color:var(--primary)}
.dir-main p{font-size:14px;color:var(--ink-2);line-height:1.75;max-width:52em}
.dir-mini{display:flex;flex-direction:column;gap:8px}
.dir-mini span{font-size:13px;color:var(--ink-2);padding-left:14px;position:relative;transition:color .18s}
.dir-mini span::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.75}
.dir-row:hover .dir-mini span{color:var(--primary-700)}
.dir-count{justify-self:end}
.dir-arrow{justify-self:end;color:var(--ink-3);font-size:18px;transition:transform .2s ease,color .2s ease}
.dir-row:hover .dir-arrow{transform:translateX(4px);color:var(--primary)}

/* 卡片通用 */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}
.card:hover{box-shadow:0 1px 2px rgba(11,31,42,.04),0 22px 44px -20px rgba(11,31,42,.24);transform:translateY(-3px);border-color:#D3E0E7}
.card-cover{display:block;overflow:hidden;background:var(--primary-100)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px}
.card-title{font-size:18px;font-weight:600;line-height:1.5;margin:12px 0 10px}
.card-title a{color:var(--ink)}
.card-title a:hover{color:var(--primary)}
.card-summary{font-size:14px;color:var(--ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3)}

/* 精选非对称 */
.featured-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card-feature{grid-column:span 2;}
.card-feature .card-cover img{height:320px}
.card-feature .card-title{font-size:24px}
.card-feature .card-summary{-webkit-line-clamp:3;font-size:15px}
.card-standard{grid-column:span 1}
.card-standard .card-cover img{height:170px}
.mini-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.mini-item{display:flex;align-items:flex-start;gap:14px;padding:18px 20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);transition:background .2s,border-color .2s,transform .2s}
.mini-item:hover{background:var(--primary-100);border-color:#CFE1E9;transform:translateY(-2px)}
.mini-item .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:9px;flex-shrink:0}
.mini-item strong{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.6}
.mini-item span{font-size:13px;color:var(--ink-3)}
.mini-item:hover strong{color:var(--primary)}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .22s,transform .22s,border-color .22s}
.news-card:hover{box-shadow:0 1px 2px rgba(11,31,42,.04),0 22px 44px -20px rgba(11,31,42,.24);transform:translateY(-3px);border-color:#D3E0E7}
.news-cover{display:block;overflow:hidden;background:var(--primary-100)}
.news-cover img{width:100%;height:172px;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:17px;font-weight:600;line-height:1.55;margin:12px 0 8px}
.news-title a{color:var(--ink)}
.news-title a:hover{color:var(--primary)}
.news-summary{font-size:14px;color:var(--ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3)}
.news-meta .link-more{font-size:13.5px}

/* 空态 */
.empty-state{background:var(--surface);border:1px dashed #CFDDE4;border-radius:var(--radius-lg);padding:56px 24px;text-align:center}
.empty-icon{width:56px;height:56px;margin:0 auto 18px;border-radius:16px;background:var(--primary-100);display:flex;align-items:center;justify-content:center;color:var(--primary)}
.empty-state p{color:var(--ink-2);font-size:15px}
.empty-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:24px}

/* 横向滚动推荐 */
.scroll-row{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(266px,1fr);gap:24px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory}
.scroll-row::-webkit-scrollbar{height:8px}
.scroll-row::-webkit-scrollbar-thumb{background:#CBD9E0;border-radius:999px}
.scroll-row::-webkit-scrollbar-track{background:transparent}
.compact-card{scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:box-shadow .22s,transform .22s}
.compact-card:hover{box-shadow:0 1px 2px rgba(11,31,42,.04),0 20px 40px -20px rgba(11,31,42,.24);transform:translateY(-3px)}
.compact-card img{width:100%;height:140px;object-fit:cover}
.compact-body{padding:16px 18px 18px}
.compact-body strong{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.55;margin-bottom:8px}
.compact-card a:hover strong{color:var(--primary)}
.compact-body span{font-size:12.5px;color:var(--ink-3)}

/* CTA 条带 */
.cta-band{background:var(--primary-100);border-left:4px solid var(--primary)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:56px 24px;flex-wrap:wrap}
.cta-text h2{font-size:26px;margin-bottom:10px;color:var(--primary-700)}
.cta-text p{font-size:15px;color:var(--ink-2);max-width:56em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* FAQ */
.faq-wrap{max-width:880px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;cursor:pointer;list-style:none;font-size:17px;font-weight:600;color:var(--ink);transition:color .18s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;line-height:1;color:var(--ink-3);transition:transform .22s ease,color .18s ease;flex-shrink:0}
.faq-item summary:hover{color:var(--primary)}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--primary)}
.faq-answer{padding:0 44px 24px 0;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.site-footer a{color:rgba(255,255,255,.72);font-size:14px}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .logo-mark{background:rgba(255,255,255,.10)}
.footer-brand strong{color:#fff;font-size:18px;font-weight:700}
.footer-brand em{display:block;font-style:normal;font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.08em}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:34em}
.footer-list li+li{margin-top:11px}
.footer-divider{height:1px;background:rgba(255,255,255,.14)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0 26px;font-size:13px;color:rgba(255,255,255,.48);flex-wrap:wrap}
.footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom-links a{font-size:13px;color:rgba(255,255,255,.48)}
.footer-bottom-links a:hover{color:#fff}

/* 响应式 */
@media (max-width:1280px){
  .hero h1{font-size:36px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-right .nav-more,.nav-right .nav-icon-btn{display:none}
  .hamburger{display:inline-flex}
  .nav-cta{display:none}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:64px 24px}
  .hero-visual{justify-content:flex-start}
  .hero-card{max-width:440px;transform:none}
  .hero h1{font-size:32px}
  .dir-row{grid-template-columns:56px minmax(0,1fr);gap:16px 20px;padding:22px 20px 22px 24px}
  .dir-mini{grid-column:2;}
  .dir-count{grid-column:2;justify-self:start}
  .dir-arrow{display:none}
  .featured-grid{grid-template-columns:repeat(2,1fr)}
  .card-feature{grid-column:span 2}
  .mini-list{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .hero{min-height:420px}
  .hero-inner{padding:48px 20px}
  .hero h1{font-size:30px;line-height:1.3}
  .hero-sub{font-size:15px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .hero-stats{margin-top:30px}
  .stat{flex:1 1 50%;padding:12px 16px;border-left:0;border-top:1px solid rgba(255,255,255,.18)}
  .stat:nth-child(1),.stat:nth-child(2){border-top:0}
  .hero-card img{height:200px}
  h2{font-size:24px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px}
  .directory{border-radius:14px}
  .dir-row{padding:20px 16px;grid-template-columns:44px minmax(0,1fr);gap:12px 14px}
  .dir-index{font-size:18px}
  .dir-main h3{font-size:18px}
  .featured-grid{grid-template-columns:1fr}
  .card-feature{grid-column:span 1}
  .card-feature .card-cover img{height:210px}
  .card-feature .card-title{font-size:19px}
  .news-grid{grid-template-columns:1fr}
  .cta-inner{padding:40px 20px;flex-direction:column;align-items:flex-start;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .faq-answer{padding-right:0}
  .scroll-row{grid-auto-columns:minmax(240px,1fr)}
}

/* roulang page: article */
:root{
    --ink:#0B1F2A;
    --ink-2:#3B5566;
    --ink-3:#7C8F9B;
    --primary:#0F5570;
    --primary-700:#0A4257;
    --primary-100:#E4EFF4;
    --accent:#14A38B;
    --accent-100:#E2F4F1;
    --gold:#D9A24A;
    --bg:#F6F9FA;
    --surface:#FFFFFF;
    --line:#E3EBEF;
    --radius-card:16px;
    --radius-cover:20px;
    --radius-btn:10px;
    --shadow-1:0 1px 2px rgba(11,31,42,.04), 0 12px 28px -14px rgba(11,31,42,.16);
    --shadow-2:0 2px 4px rgba(11,31,42,.05), 0 20px 42px -18px rgba(11,31,42,.22);
    --container:1200px;
    --tap:44px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:Inter,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-style:none}
  a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
  a:hover{text-decoration:underline}
  button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:.01em}
  p{margin:0 0 1.2em}
  ul,ol{margin:0;padding:0;list-style:none}
  input,textarea{font:inherit;color:inherit}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  .num{font-variant-numeric:tabular-nums}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

  /* ---------- 顶栏 ---------- */
  .topbar{background:var(--primary-100);border-bottom:1px solid var(--line)}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;font-size:13px;color:var(--ink-2)}
  .topbar-tag{display:inline-flex;align-items:center;gap:8px}
  .topbar-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
  .topbar-links{display:flex;gap:20px}
  .topbar-links a{color:var(--ink-2);font-size:13px}
  .topbar-links a:hover{color:var(--primary);text-decoration:none}

  /* ---------- 主导航 ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .22s ease}
  .site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(11,31,42,.4)}
  .header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
  .brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
  .brand:hover{text-decoration:none}
  .brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--primary-100)}
  .brand-text{display:flex;flex-direction:column;line-height:1.25}
  .brand-text strong{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em}
  .brand-text em{font-style:normal;font-size:12px;color:var(--ink-3);letter-spacing:.06em}
  .main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
  .nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15px;color:var(--ink-2);font-weight:500}
  .nav-link:hover{color:var(--primary);text-decoration:none}
  .nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:18px;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--primary);font-weight:600}
  .nav-link.is-active::after{transform:scaleX(1)}
  .header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}

  .mega-wrap{position:relative}
  .mega-trigger{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:var(--radius-btn);border:1px solid var(--line);color:var(--ink-2);font-size:14px;transition:.18s ease}
  .mega-trigger:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}
  .mega-trigger svg{transition:transform .2s ease}
  .mega-wrap:hover .mega-trigger svg,.mega-wrap:focus-within .mega-trigger svg{transform:rotate(180deg)}
  .mega-panel{
    position:absolute;right:0;top:calc(100% + 14px);width:720px;max-width:calc(100vw - 48px);
    background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-2);
    padding:28px;display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:24px;
    opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .16s ease,transform .16s ease,visibility .16s;
  }
  .mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
  .mega-title{font-size:12px;letter-spacing:.08em;color:var(--ink-3);margin-bottom:14px}
  .mega-list li+li{margin-top:10px}
  .mega-list a{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.5}
  .mega-list a:hover{color:var(--primary);text-decoration:none}
  .mega-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex:0 0 auto}
  .mega-news time{display:block;font-size:12px;color:var(--ink-3)}
  .mega-card{display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden}
  .mega-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
  .mega-card span{display:block;padding:12px 14px;font-size:14px;color:var(--ink);font-weight:600;line-height:1.5}
  .mega-card:hover{border-color:var(--primary);text-decoration:none}

  .icon-btn{display:grid;place-items:center;width:40px;height:40px;border-radius:var(--radius-btn);border:1px solid var(--line);color:var(--ink-2);transition:.18s ease}
  .icon-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100)}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:var(--tap);padding:0 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;transition:transform .16s ease,background-color .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease}
  .btn:hover{text-decoration:none;transform:translateY(-1px)}
  .btn:active{transform:translateY(0)}
  .btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-1)}
  .btn-primary:hover{background:var(--primary-700);color:#fff}
  .btn-outline{background:var(--surface);color:var(--primary);border:1px solid var(--primary)}
  .btn-outline:hover{background:var(--primary-100)}
  .btn-ghost{background:transparent;color:var(--primary);padding:0 4px;min-height:auto}
  .btn-ghost svg{transition:transform .18s ease}
  .btn-ghost:hover svg{transform:translateX(3px)}
  .hamburger{display:none;width:var(--tap);height:var(--tap);border-radius:var(--radius-btn);border:1px solid var(--line);place-items:center;color:var(--ink)}
  .hamburger:hover{border-color:var(--primary);color:var(--primary)}

  .overlay{position:fixed;inset:0;background:rgba(11,31,42,.45);opacity:0;visibility:hidden;transition:.2s ease;z-index:70}
  .overlay.is-open{opacity:1;visibility:visible}
  .drawer{position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);background:var(--surface);z-index:80;transform:translateX(102%);transition:transform .26s ease;padding:20px;overflow-y:auto}
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
  .drawer-head strong{font-size:17px}
  .drawer-nav a{display:block;padding:14px 6px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink-2)}
  .drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);text-decoration:none}
  .drawer-cta{margin-top:22px;display:grid;gap:10px}

  /* ---------- 面包屑 ---------- */
  .crumb{padding:22px 0 6px;font-size:13px;color:var(--ink-3)}
  .crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
  .crumb li{display:flex;align-items:center;gap:8px;max-width:320px}
  .crumb li+li::before{content:"›";color:var(--ink-3)}
  .crumb a{color:var(--ink-2)}
  .crumb a:hover{color:var(--primary);text-decoration:none}
  .crumb .current{color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:inline-block;max-width:260px;vertical-align:bottom}

  /* ---------- 文章头 ---------- */
  .article-hero{padding:18px 0 34px;border-bottom:1px solid var(--line)}
  .badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;background:var(--accent-100);color:#0C7A68;font-size:12px;letter-spacing:.06em;font-weight:600}
  .article-title{font-size:40px;line-height:1.2;font-weight:700;letter-spacing:.01em;margin:16px 0 18px;max-width:900px}
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;font-size:14px;color:var(--ink-3)}
  .meta-item{display:inline-flex;align-items:center;gap:8px}
  .meta-item svg{color:var(--accent)}
  .meta-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
  .chip{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:13px;color:var(--ink-2);transition:.18s ease}
  .chip:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}
  .chip .star{color:var(--gold)}

  /* ---------- 布局 ---------- */
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:48px;padding:44px 0 0;align-items:start}
  .article-main{min-width:0}
  .article-body{max-width:760px;font-size:17px;line-height:32px;color:var(--ink);word-break:break-word}
  .article-body p{margin:0 0 1.2em}
  .article-body h2{position:relative;font-size:30px;line-height:1.4;font-weight:600;margin:44px 0 16px;padding-left:16px;scroll-margin-top:110px}
  .article-body h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;background:var(--primary)}
  .article-body h3{font-size:22px;line-height:1.5;font-weight:600;margin:32px 0 12px;scroll-margin-top:110px}
  .article-body h4{font-size:18px;font-weight:600;margin:24px 0 10px}
  .article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{color:var(--primary-700)}
  .article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0}
  .article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin:8px 0;line-height:1.9}
  .article-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--accent)}
  .article-body ol{counter-reset:item}
  .article-body ol li{counter-increment:item}
  .article-body ol li::before{content:counter(item);position:absolute;left:0;top:.2em;font-size:13px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}
  .article-body blockquote{margin:26px 0;padding:18px 22px;background:var(--primary-100);border-left:4px solid var(--accent);border-radius:0 12px 12px 0;color:var(--ink-2)}
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:12px;margin:24px auto;box-shadow:var(--shadow-1)}
  .article-body figure{margin:24px 0}
  .article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--ink-3)}
  .article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}
  .article-body .table-scroll{overflow-x:auto;margin:22px 0;border:1px solid var(--line);border-radius:12px}
  .article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
  .article-body th{background:var(--primary-100);color:var(--ink);font-weight:600;white-space:nowrap}
  .article-body tr:last-child td{border-bottom:none}
  .article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}
  .article-body strong{font-weight:600;color:var(--ink)}

  .empty-state{padding:48px 28px;text-align:center;background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card)}
  .empty-state svg{color:var(--ink-3);margin:0 auto 14px}
  .empty-state h2{font-size:22px;margin-bottom:10px}
  .empty-state p{color:var(--ink-2);margin-bottom:20px}

  /* ---------- 目录 ---------- */
  .toc{position:sticky;top:104px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1)}
  .toc-title{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--ink-3);margin-bottom:14px}
  .toc-title::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--gold)}
  .toc-list{max-height:56vh;overflow-y:auto}
  .toc-list li+li{margin-top:2px}
  .toc-list a{display:block;padding:7px 10px;border-left:2px solid transparent;font-size:14px;line-height:1.5;color:var(--ink-2);border-radius:0 8px 8px 0}
  .toc-list a:hover{color:var(--primary);background:var(--primary-100);text-decoration:none}
  .toc-list a.is-current{color:var(--primary);border-left-color:var(--primary);background:var(--primary-100);font-weight:600}
  .toc-mobile{display:none;margin:0 0 26px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);padding:14px 18px}
  .toc-mobile summary{font-size:15px;font-weight:600;color:var(--ink);cursor:pointer}
  .toc-mobile summary::marker{color:var(--accent)}
  .toc-mobile .toc-list{margin-top:10px;max-height:none}

  /* ---------- 文末推荐 ---------- */
  .related{padding:56px 0 0}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
  .section-head h2{font-size:30px;line-height:1.35}
  .section-head p{margin:8px 0 0;font-size:14px;color:var(--ink-3)}
  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;padding:20px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D2E1E8}
  .card-media{margin:-20px -20px 18px;overflow:hidden}
  .card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
  .card:hover .card-media img{transform:scale(1.03)}
  .card h3{font-size:19px;line-height:1.5;margin:12px 0 10px}
  .card h3 a{color:var(--ink)}
  .card h3 a:hover{color:var(--primary);text-decoration:none}
  .card p{font-size:14px;line-height:24px;color:var(--ink-2);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .card-foot{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
  .card-foot .go{margin-left:auto;color:var(--primary);transition:transform .18s ease}
  .card:hover .card-foot .go{transform:translateX(3px)}

  .pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding:44px 0 0}
  .pager a{display:block;padding:20px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);transition:.2s ease}
  .pager a:hover{border-color:var(--primary);box-shadow:var(--shadow-1);text-decoration:none;transform:translateY(-2px)}
  .pager span{display:block;font-size:12px;letter-spacing:.08em;color:var(--ink-3);margin-bottom:8px}
  .pager strong{display:block;font-size:16px;line-height:1.6;color:var(--ink);font-weight:600}
  .pager a:hover strong{color:var(--primary)}
  .pager .next{text-align:right}

  /* ---------- CTA ---------- */
  .cta-band{margin:64px 0 0;background:var(--primary-100);border-left:4px solid var(--primary);border-radius:0 var(--radius-card) var(--radius-card) 0;padding:32px}
  .cta-band h2{font-size:24px;margin-bottom:10px}
  .cta-band p{color:var(--ink-2);font-size:15px;max-width:640px;margin-bottom:20px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- 页脚 ---------- */
  .site-footer{margin-top:80px;background:var(--ink);color:#C6D4DC;padding:56px 0 28px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
  .footer-brand{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px}
  .logo-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:rgba(255,255,255,.07)}
  .footer-brand strong{display:block;color:#fff;font-size:18px;font-weight:700}
  .footer-brand em{font-style:normal;font-size:12px;color:#8FA6B2;letter-spacing:.06em}
  .footer-desc{font-size:14px;line-height:26px;color:#9DB2BD;margin:0}
  .site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
  .footer-list li+li{margin-top:10px}
  .footer-list a{color:#A9BCC6;font-size:14px}
  .footer-list a:hover{color:#fff;text-decoration:none}
  .footer-divider{height:1px;background:rgba(255,255,255,.12);margin:36px 0 18px}
  .footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:#7C8F9B}
  .footer-bottom-links{display:flex;flex-wrap:wrap;gap:16px}
  .footer-bottom-links a{color:#7C8F9B;font-size:13px}
  .footer-bottom-links a:hover{color:#fff;text-decoration:none}

  @media (max-width:1023px){
    .main-nav,.mega-wrap,.header-actions .btn-primary{display:none}
    .hamburger{display:grid}
    .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:32px}
    .toc{display:none}
    .toc-mobile{display:block}
    .article-title{font-size:32px}
    .article-body h2{font-size:26px;margin-top:36px}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  }
  @media (max-width:767px){
    .container{padding:0 20px}
    .topbar-links{display:none}
    .article-hero{padding-bottom:26px}
    .article-title{font-size:28px}
    .meta-actions{margin-left:0;width:100%}
    .article-body{font-size:16px;line-height:30px}
    .article-body h2{font-size:23px}
    .article-body h3{font-size:19px}
    .card-grid{grid-template-columns:minmax(0,1fr)}
    .pager{grid-template-columns:minmax(0,1fr)}
    .pager .next{text-align:left}
    .cta-band{padding:24px}
    .footer-grid{grid-template-columns:1fr}
  }
  @media (max-width:520px){
    .article-title{font-size:25px}
    .brand-text em{display:none}
    .section-head{flex-direction:column;align-items:flex-start}
  }

/* roulang page: category1 */
:root{
    --ink:#0B1F2A;
    --ink-2:#3B5566;
    --ink-3:#7C8F9B;
    --primary:#0F5570;
    --primary-700:#0A4257;
    --primary-100:#E4EFF4;
    --accent:#14A38B;
    --gold:#D9A24A;
    --bg:#F6F9FA;
    --surface:#FFFFFF;
    --line:#E3EBEF;

    --radius-card:16px;
    --radius-lg:20px;
    --radius-btn:10px;

    --shadow-1:0 1px 2px rgba(11,31,42,.04), 0 12px 28px -14px rgba(11,31,42,.16);
    --shadow-2:0 2px 4px rgba(11,31,42,.05), 0 20px 40px -20px rgba(11,31,42,.22);

    --gap-section:96px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:Inter,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
  a:hover{text-decoration:underline;}
  button{font:inherit;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  h1,h2,h3,h4{line-height:1.35;letter-spacing:.01em;}
  p{margin-bottom:1.2em;}
  p:last-child{margin-bottom:0;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .num{font-variant-numeric:tabular-nums;}

  a:focus-visible,button:focus-visible,summary:focus-visible{
    outline:2px solid var(--accent);
    outline-offset:2px;
    border-radius:6px;
  }

  /* ---------- 顶部细条 ---------- */
  .topbar{background:var(--primary-100);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-2);}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;gap:16px;}
  .topbar-note{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .topbar-dot{width:6px;height:6px;border-radius:999px;background:var(--accent);flex:0 0 auto;}
  .topbar-links{display:flex;align-items:center;gap:18px;flex:0 0 auto;}
  .topbar-links a{color:var(--ink-2);font-size:13px;}
  .topbar-links a:hover{color:var(--primary);}

  /* ---------- 主导航 ---------- */
  .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
  .site-header.is-scrolled{box-shadow:0 6px 24px -18px rgba(11,31,42,.4);}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}

  .logo{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;}
  .logo:hover{text-decoration:none;}
  .logo-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:var(--primary-100);flex:0 0 auto;}
  .logo-text{display:flex;flex-direction:column;line-height:1.15;}
  .logo-text strong{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);}
  .logo-text em{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--ink-3);}

  .main-nav{display:flex;align-items:center;gap:6px;}
  .nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15px;color:var(--ink-2);font-weight:500;}
  .nav-link:hover{color:var(--primary);text-decoration:none;}
  .nav-link.is-active{color:var(--primary);font-weight:600;}
  .nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;background:var(--primary);}

  .nav-tools{display:flex;align-items:center;gap:10px;}
  .icon-btn{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);transition:all .18s ease;}
  .icon-btn:hover{border-color:var(--primary);color:var(--primary);}
  .icon-btn:active{transform:translateY(1px);}

  /* Mega 面板 */
  .has-mega{position:relative;}
  .mega-trigger{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);font-size:14px;transition:all .18s ease;}
  .mega-trigger:hover{border-color:var(--primary);color:var(--primary);}
  .mega-trigger svg{transition:transform .18s ease;}
  .has-mega:hover .mega-trigger svg,.has-mega:focus-within .mega-trigger svg{transform:rotate(180deg);}
  .mega-panel{
    position:absolute;right:0;top:calc(100% + 12px);
    width:720px;max-width:calc(100vw - 48px);
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-2);padding:28px;
    display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:26px;
    opacity:0;visibility:hidden;transform:translateY(6px);
    transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
  }
  .has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
  .mega-title{font-size:12px;letter-spacing:.12em;color:var(--ink-3);font-weight:600;margin-bottom:14px;}
  .mega-list li + li{margin-top:10px;}
  .mega-list a{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.5;}
  .mega-list a:hover{color:var(--primary);}
  .mega-ico{width:26px;height:26px;border-radius:8px;background:var(--primary-100);display:grid;place-items:center;flex:0 0 auto;color:var(--primary);font-size:12px;font-weight:700;}
  .mega-news a{display:block;font-size:14px;color:var(--ink);line-height:1.5;margin-bottom:4px;}
  .mega-news a:hover{color:var(--primary);}
  .mega-news time{font-size:12px;color:var(--ink-3);}
  .mega-news li + li{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);}
  .mega-card{display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;}
  .mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .mega-card span{display:block;padding:12px 14px;font-size:14px;color:var(--ink);font-weight:600;line-height:1.5;}
  .mega-card:hover{border-color:var(--primary);text-decoration:none;}

  .hamburger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center;}
  .hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
  .hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
  .hamburger span::before{top:-6px;}
  .hamburger span::after{top:6px;}

  /* 移动抽屉 */
  .drawer-mask{position:fixed;inset:0;background:rgba(11,31,42,.45);opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:70;}
  .drawer{position:fixed;top:0;right:0;bottom:0;width:min(88vw,380px);background:#fff;z-index:80;transform:translateX(100%);transition:transform .26s ease;display:flex;flex-direction:column;padding:0;overflow-y:auto;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;}
  .drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);display:grid;place-items:center;font-size:18px;line-height:1;}
  .drawer-nav{padding:10px 20px 24px;}
  .drawer-nav a{display:block;padding:14px 0;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);}
  .drawer-nav a.is-active{color:var(--primary);font-weight:600;}
  .drawer-sub{padding:8px 0 24px;}
  .drawer-sub .mega-title{margin-top:18px;}
  body.menu-open .drawer-mask{opacity:1;visibility:visible;}
  body.menu-open .drawer{transform:translateX(0);}
  body.menu-open{overflow:hidden;}

  /* ---------- 按钮 ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:all .18s ease;text-decoration:none;}
  .btn:hover{text-decoration:none;}
  .btn-primary{background:var(--primary);color:#fff;}
  .btn-primary:hover{background:var(--primary-700);transform:translateY(-1px);color:#fff;}
  .btn-primary:active{transform:translateY(0);}
  .btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
  .btn-outline:hover{background:var(--primary-100);color:var(--primary-700);}
  .btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line);}
  .btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
  .btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary);background:none;border:0;padding:6px 0;}
  .btn-text .arw{transition:transform .18s ease;}
  .btn-text:hover .arw{transform:translateX(3px);}
  .btn-gold{background:#fff;color:var(--ink);border-color:var(--line);}
  .btn-gold:hover{border-color:var(--gold);color:var(--primary);}
  .star{color:var(--gold);font-size:16px;line-height:1;}

  /* ---------- 分类 Hero ---------- */
  .hero-cat{position:relative;background:var(--primary-100);overflow:hidden;border-bottom:1px solid var(--line);}
  .hero-cat::after{
    content:"";position:absolute;top:0;right:0;bottom:0;width:56%;
    background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity:.12;
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 48%);
    mask-image:linear-gradient(90deg,transparent,#000 48%);
    pointer-events:none;
  }
  .hero-cat-inner{position:relative;z-index:2;padding:56px 0 52px;max-width:760px;}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px;flex-wrap:wrap;}
  .breadcrumb a{color:var(--ink-2);}
  .breadcrumb a:hover{color:var(--primary);}
  .breadcrumb .sep{color:var(--ink-3);}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:12px;letter-spacing:.1em;color:var(--primary);font-weight:600;margin-bottom:18px;}
  .hero-cat h1{font-size:40px;font-weight:700;letter-spacing:.01em;color:var(--ink);margin-bottom:16px;}
  .hero-cat .hero-sub{font-size:17px;color:var(--ink-2);max-width:620px;margin-bottom:28px;}
  .hero-stat{display:flex;flex-wrap:wrap;gap:28px;}
  .hero-stat div{display:flex;flex-direction:column;}
  .hero-stat strong{font-size:24px;font-weight:700;color:var(--primary);}
  .hero-stat span{font-size:12px;letter-spacing:.08em;color:var(--ink-3);}

  /* ---------- 子类目 chips ---------- */
  .chips-bar{background:#fff;border-bottom:1px solid var(--line);}
  .chips{display:flex;align-items:center;gap:10px;padding:16px 0;overflow-x:auto;scrollbar-width:none;}
  .chips::-webkit-scrollbar{display:none;}
  .chip{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;color:var(--ink-2);transition:all .18s ease;}
  .chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100);text-decoration:none;}
  .chip .dot{width:6px;height:6px;border-radius:999px;background:var(--accent);}

  /* ---------- 主体区 ---------- */
  .section{padding:var(--gap-section) 0;}
  .section-tight{padding:72px 0;}
  .section-white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
  .section-head h2{font-size:30px;font-weight:600;color:var(--ink);}
  .section-head .kicker{display:block;font-size:12px;letter-spacing:.12em;color:var(--accent);font-weight:700;margin-bottom:10px;}
  .section-head p{font-size:15px;color:var(--ink-2);margin-top:10px;max-width:640px;}

  /* 左说明 / 右清单 */
  .layout-split{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
  .side-panel{position:sticky;top:104px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1);}
  .side-panel h2{font-size:22px;font-weight:600;margin-bottom:14px;}
  .side-panel .side-line{width:44px;height:3px;border-radius:3px;background:var(--accent);margin-bottom:20px;}
  .side-panel p{font-size:14px;line-height:1.9;color:var(--ink-2);}
  .side-facts{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:14px;}
  .fact{display:flex;align-items:baseline;justify-content:space-between;gap:12px;}
  .fact span{font-size:13px;color:var(--ink-3);}
  .fact strong{font-size:16px;font-weight:700;color:var(--primary);}

  .group + .group{margin-top:44px;}
  .group-head{display:flex;align-items:center;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:4px;}
  .group-head h3{font-size:18px;font-weight:600;color:var(--ink);}
  .group-count{font-size:12px;color:var(--ink-3);letter-spacing:.06em;}

  .index-row{display:grid;grid-template-columns:150px 1fr auto;gap:22px;align-items:center;padding:22px 18px;border-bottom:1px solid var(--line);border-radius:12px;transition:background .2s ease,box-shadow .2s ease;position:relative;color:inherit;}
  .index-row::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:transparent;transition:background .2s ease;}
  .index-row:hover{background:var(--primary-100);text-decoration:none;box-shadow:var(--shadow-1);}
  .index-row:hover::before{background:var(--primary);}
  .index-thumb{border-radius:12px;overflow:hidden;border:1px solid var(--line);background:#fff;}
  .index-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease;}
  .index-row:hover .index-thumb img{transform:scale(1.03);}
  .index-main h4{font-size:18px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:8px;transition:color .18s ease;}
  .index-row:hover .index-main h4{color:var(--primary);}
  .index-main p{font-size:14px;color:var(--ink-2);line-height:1.75;margin-bottom:10px;}
  .index-meta{display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
  .index-meta time{font-size:13px;color:var(--ink-3);letter-spacing:.02em;}
  .arw-icon{color:var(--ink-3);transition:transform .2s ease,color .2s ease;}
  .index-row:hover .arw-icon{transform:translateX(4px);color:var(--primary);}

  .badge{display:inline-flex;align-items:center;padding:3px 12px;border-radius:999px;background:rgba(20,163,139,.1);color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.04em;}

  /* 说明文字块 */
  .note-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-1);}
  .note-block h2{font-size:26px;font-weight:600;margin-bottom:18px;}
  .note-block p{font-size:16px;color:var(--ink-2);line-height:1.9;}
  .note-block .quote{border-left:4px solid var(--accent);background:var(--primary-100);border-radius:0 12px 12px 0;padding:18px 22px;font-size:15px;color:var(--ink-2);margin:22px 0;}

  /* 相关分类 */
  .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .related-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;transition:all .2s ease;color:inherit;}
  .related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--primary);text-decoration:none;}
  .related-card h3{font-size:18px;font-weight:600;color:var(--ink);margin:14px 0 10px;}
  .related-card:hover h3{color:var(--primary);}
  .related-card p{font-size:14px;color:var(--ink-2);line-height:1.75;}
  .related-card .go{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--primary);}

  /* CTA 段 */
  .cta-band{background:var(--primary-100);border-left:4px solid var(--primary);border-radius:0 var(--radius-lg) var(--radius-lg) 0;padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
  .cta-band h2{font-size:26px;font-weight:600;margin-bottom:10px;}
  .cta-band p{font-size:15px;color:var(--ink-2);max-width:560px;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* FAQ */
  .faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:12px 32px;box-shadow:var(--shadow-1);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:last-child{border-bottom:0;}
  .faq-item summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .18s ease;}
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{content:"+";font-size:22px;font-weight:400;color:var(--ink-3);transition:transform .22s ease,color .22s ease;line-height:1;flex:0 0 auto;}
  .faq-item summary:hover{color:var(--primary);}
  .faq-item[open] summary{color:var(--primary);}
  .faq-item[open] summary::after{transform:rotate(45deg);color:var(--primary);}
  .faq-answer{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:900px;}

  /* 页脚 */
  .site-footer{background:var(--ink);color:#C7D6DE;margin-top:0;padding:64px 0 28px;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand strong{display:block;font-size:18px;color:#fff;font-weight:700;}
  .footer-brand em{display:block;font-style:normal;font-size:11px;letter-spacing:.14em;color:#7C8F9B;}
  .footer-desc{font-size:14px;line-height:1.9;color:#9FB3BE;}
  .site-footer h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;letter-spacing:.04em;}
  .footer-list li + li{margin-top:10px;}
  .footer-list a{font-size:14px;color:#9FB3BE;}
  .footer-list a:hover{color:#7FD8C9;text-decoration:none;}
  .footer-divider{height:1px;background:rgba(255,255,255,.1);margin:44px 0 22px;}
  .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);}
  .footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap;}
  .footer-bottom-links a{font-size:13px;color:var(--ink-3);}
  .footer-bottom-links a:hover{color:#7FD8C9;}

  /* 响应式 */
  @media (max-width:1023px){
    :root{--gap-section:72px;}
    .main-nav,.nav-tools .mega-trigger,.nav-tools .icon-btn{display:none;}
    .hamburger{display:flex;}
    .layout-split{grid-template-columns:1fr;gap:36px;}
    .side-panel{position:static;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .hero-cat h1{font-size:34px;}
    .related-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:767px){
    :root{--gap-section:56px;}
    .container{padding:0 20px;}
    .topbar-links{display:none;}
    .hero-cat-inner{padding:40px 0 36px;}
    .hero-cat h1{font-size:30px;}
    .hero-cat::after{width:80%;opacity:.08;}
    .hero-stat{gap:20px;}
    .section-head h2{font-size:24px;}
    .index-row{grid-template-columns:112px 1fr;gap:16px;padding:18px 12px;}
    .index-meta{grid-column:1 / -1;flex-direction:row;align-items:center;justify-content:space-between;}
    .index-main h4{font-size:16px;}
    .cta-band{padding:28px 24px;border-radius:0 var(--radius-card) var(--radius-card) 0;}
    .cta-band h2{font-size:22px;}
    .note-block{padding:24px;}
    .faq-wrap{padding:6px 20px;}
    .related-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .btn{width:100%;}
    .cta-actions{width:100%;}
  }
  @media (max-width:520px){
    .index-row{grid-template-columns:1fr;}
    .index-thumb{max-width:180px;}
    .hero-stat strong{font-size:20px;}
  }

/* roulang page: category2 */
:root{
    --ink:#0B1F2A;
    --ink-2:#3B5566;
    --ink-3:#7C8F9B;
    --primary:#0F5570;
    --primary-700:#0A4257;
    --primary-100:#E4EFF4;
    --accent:#14A38B;
    --accent-soft:#E2F4F0;
    --gold:#D9A24A;
    --bg:#F6F9FA;
    --surface:#FFFFFF;
    --line:#E3EBEF;
    --radius-card:16px;
    --radius-lg:20px;
    --radius-btn:10px;
    --shadow-soft:0 1px 2px rgba(11,31,42,.04), 0 12px 28px -14px rgba(11,31,42,.16);
    --shadow-hover:0 1px 2px rgba(11,31,42,.05), 0 20px 34px -16px rgba(11,31,42,.22);
    --font:Inter,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,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:1.8;color:var(--ink);
    background:var(--bg);font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0}
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;line-height:1.35}
  p{margin:0 0 1.2em}
  p:last-child{margin-bottom:0}
  a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,transform .18s ease}
  a:hover{text-decoration:underline;color:var(--primary-700)}
  ul,ol{margin:0;padding:0;list-style:none}
  button,input{font-family:inherit;font-size:inherit}
  a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
    outline:2px solid var(--accent);outline-offset:2px;border-radius:8px;
  }

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

  /* ---------- 顶栏 ---------- */
  .topbar{background:var(--primary-100);border-bottom:1px solid var(--line)}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;font-size:13px;color:var(--ink-2)}
  .topbar-links{display:flex;align-items:center;gap:18px}
  .topbar-links a{font-size:13px;color:var(--primary);font-weight:500}
  .topbar-links a:hover{color:var(--primary-700)}

  /* ---------- 主导航 ---------- */
  .site-header{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .22s ease}
  .site-header.is-stuck{box-shadow:0 8px 24px -18px rgba(11,31,42,.45)}
  .header-inner{display:flex;align-items:center;gap:28px;min-height:72px}
  .logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
  .logo:hover{text-decoration:none}
  .logo-mark{display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;background:var(--primary-100);border-radius:12px}
  .logo-text{display:flex;flex-direction:column;line-height:1.25}
  .logo-text strong{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em}
  .logo-text em{font-style:normal;font-size:12px;color:var(--ink-3);margin-top:2px}
  .main-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
  .nav-link{position:relative;padding:6px 2px;font-size:15px;font-weight:500;color:var(--ink-2)}
  .nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .18s ease}
  .nav-link:hover{color:var(--primary);text-decoration:none}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--primary);font-weight:600}
  .nav-link.is-active::after{transform:scaleX(1)}
  .header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
  .icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);cursor:pointer;transition:all .18s ease}
  .icon-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100)}
  .search-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;color:var(--ink-2);background:#fff}
  .search-icon:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100);text-decoration:none}

  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-btn);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:all .18s ease;white-space:nowrap}
  .btn-primary{background:var(--primary);color:#fff}
  .btn-primary:hover{background:var(--primary-700);color:#fff;text-decoration:none;transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{background:#fff;border-color:var(--primary);color:var(--primary)}
  .btn-outline:hover{background:var(--primary-100);color:var(--primary-700);text-decoration:none;transform:translateY(-1px)}
  .btn-outline:active{transform:translateY(0)}
  .btn-sm{height:38px;padding:0 16px;font-size:14px}
  .btn-text{display:inline-flex;align-items:center;gap:6px;background:none;border:0;padding:0;font-size:14px;font-weight:600;color:var(--primary);cursor:pointer}
  .btn-text:hover{color:var(--primary-700);text-decoration:none}
  .btn-text .arrow{display:inline-block;transition:transform .18s ease}
  .btn-text:hover .arrow{transform:translateX(3px)}

  /* ---------- Mega 面板 ---------- */
  .mega{position:relative}
  .mega-trigger{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);font-size:14px;font-weight:500;cursor:pointer}
  .mega-trigger:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100)}
  .mega-panel{
    position:absolute;right:0;top:calc(100% + 14px);width:720px;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-lg);box-shadow:var(--shadow-hover);padding:28px;z-index:60;
    display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:24px;
    opacity:0;visibility:hidden;transform:translateY(6px);
    transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
  }
  .mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
  .mega-col h5{margin:0 0 14px;font-size:12px;letter-spacing:.08em;color:var(--ink-3);font-weight:600}
  .mega-item{display:flex;align-items:center;gap:10px;padding:8px 0;font-size:14px;color:var(--ink-2)}
  .mega-item:hover{color:var(--primary);text-decoration:none}
  .mega-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0}
  .mega-news{display:block;padding:8px 0;border-bottom:1px dashed var(--line)}
  .mega-news:last-child{border-bottom:0}
  .mega-news strong{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.6}
  .mega-news span{font-size:12px;color:var(--ink-3)}
  .mega-news:hover strong{color:var(--primary)}
  .mega-entry{display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
  .mega-entry:hover{border-color:var(--primary);text-decoration:none}
  .mega-entry img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .mega-entry span{display:block;padding:12px 14px;font-size:14px;font-weight:600;color:var(--ink)}
  .mega-entry:hover span{color:var(--primary)}

  /* ---------- 移动端导航 ---------- */
  .nav-toggle-input{display:none}
  .nav-burger{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}
  .nav-burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
  .nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
  .nav-burger span::before{top:-6px}
  .nav-burger span::after{top:6px}
  .nav-mask{display:none}
  .nav-close{display:none;position:absolute;top:18px;right:18px;width:40px;height:40px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;font-size:20px;color:var(--ink-2);cursor:pointer;background:#fff}

  /* ---------- 分类 Hero ---------- */
  .cat-hero{position:relative;background:var(--primary-100);border-bottom:1px solid var(--line);overflow:hidden;min-height:320px;display:flex;align-items:center}
  .cat-hero::before{
    content:"";position:absolute;top:0;right:0;bottom:0;width:56%;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center right;opacity:.12;
  }
  .cat-hero-inner{position:relative;z-index:1;padding-top:56px;padding-bottom:56px}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
  .breadcrumb a{color:var(--ink-2)}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .current{color:var(--primary);font-weight:600}
  .eyebrow{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--accent);font-weight:600;background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 14px;margin-bottom:16px}
  .cat-hero h1{font-size:40px;line-height:1.3;font-weight:700;letter-spacing:.01em;max-width:820px}
  .cat-hero-sub{margin:16px 0 0;font-size:17px;color:var(--ink-2);max-width:680px}
  .cat-hero-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:22px;font-size:13px;color:var(--ink-3)}
  .cat-hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-3);opacity:.6}

  /* ---------- chips ---------- */
  .chips-row{background:#fff;border-bottom:1px solid var(--line)}
  .chips{display:flex;flex-wrap:wrap;gap:10px;padding:16px 0}
  .chip{display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:14px;transition:all .18s ease}
  .chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100);text-decoration:none}
  .chip.is-current{background:var(--primary);border-color:var(--primary);color:#fff}
  .chip.is-current:hover{background:var(--primary-700);color:#fff}

  /* ---------- 区块 ---------- */
  .section{padding:96px 0}
  .section--bg{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
  .section-title{font-size:30px;line-height:1.35;font-weight:600}
  .section-sub{margin:10px 0 0;font-size:15px;color:var(--ink-3);max-width:640px}
  .textured{position:relative}
  .textured::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:repeating-linear-gradient(180deg,rgba(15,85,112,.03) 0 1px,transparent 1px 22px)}
  .textured > *{position:relative}

  /* ---------- 时间轴 ---------- */
  .timeline{position:relative;margin-top:8px}
  .timeline::before{content:"";position:absolute;left:17px;top:14px;bottom:20px;width:2px;background:linear-gradient(180deg,var(--accent),var(--line) 45%,var(--line))}
  .tl-item{position:relative;padding-left:56px;padding-bottom:26px}
  .tl-item:last-child{padding-bottom:0}
  .tl-dot{position:absolute;left:9px;top:22px;width:18px;height:18px;border-radius:50%;background:#fff;border:3px solid var(--accent);z-index:1}
  .tl-card{
    display:grid;grid-template-columns:280px 1fr;gap:24px;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-soft);
    transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  }
  .tl-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#D3E1E8}
  .tl-cover{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:16/10;background:var(--primary-100)}
  .tl-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
  .tl-card:hover .tl-cover img{transform:scale(1.03)}
  .badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.02em}
  .tl-cover .badge{position:absolute;left:12px;bottom:12px;background:rgba(255,255,255,.94);box-shadow:0 2px 8px rgba(11,31,42,.12)}
  .tl-body{display:flex;flex-direction:column}
  .tl-no{font-size:20px;font-weight:700;color:var(--gold);letter-spacing:.02em;font-variant-numeric:tabular-nums}
  .tl-body h3{font-size:20px;line-height:1.5;margin:4px 0 10px;font-weight:600}
  .tl-body h3 a{color:var(--ink)}
  .tl-body h3 a:hover{color:var(--primary);text-decoration:none}
  .tl-body p{font-size:15px;line-height:1.8;color:var(--ink-2);margin:0 0 16px}
  .tl-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:14px;border-top:1px solid var(--line)}
  .meta{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}

  /* ---------- 说明区 ---------- */
  .notes-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:start}
  .notes-grid h2{font-size:30px;margin-bottom:20px}
  .notes-grid p{font-size:16px;line-height:1.9;color:var(--ink-2)}
  .side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-soft)}
  .side-card h4{font-size:16px;margin-bottom:14px}
  .side-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--ink-2);line-height:1.75}
  .side-list li:last-child{border-bottom:0;padding-bottom:0}
  .side-list .num{flex-shrink:0;width:22px;height:22px;border-radius:8px;background:var(--primary-100);color:var(--primary);font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;margin-top:3px}

  /* ---------- 相关分类 ---------- */
  .rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .rel-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-soft);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}
  .rel-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#D3E1E8;text-decoration:none}
  .rel-card h3{font-size:19px;margin-bottom:10px}
  .rel-card:hover h3{color:var(--primary)}
  .rel-card p{font-size:14px;line-height:1.8;color:var(--ink-2);margin-bottom:16px}
  .rel-tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--primary-100);color:var(--primary);font-size:12px;font-weight:600}

  /* ---------- FAQ ---------- */
  .faq-list{max-width:860px}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
  .faq-item:hover{border-color:#D3E1E8;box-shadow:var(--shadow-soft)}
  .faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink)}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-plus{flex-shrink:0;width:22px;height:22px;position:relative;margin-top:3px;transition:transform .22s ease}
  .faq-plus::before,.faq-plus::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink-3);border-radius:2px;transition:background .2s ease}
  .faq-plus::before{width:14px;height:2px;transform:translate(-50%,-50%)}
  .faq-plus::after{width:2px;height:14px;transform:translate(-50%,-50%)}
  .faq-item[open] summary{color:var(--primary)}
  .faq-item[open] .faq-plus{transform:rotate(45deg)}
  .faq-item[open] .faq-plus::before,.faq-item[open] .faq-plus::after{background:var(--accent)}
  .faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-2)}

  /* ---------- CTA ---------- */
  .cta-band{background:var(--primary-100);border-left:4px solid var(--primary);border-radius:var(--radius-card);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
  .cta-band h2{font-size:24px;margin-bottom:8px}
  .cta-band p{margin:0;font-size:15px;color:var(--ink-2);max-width:620px}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
  .star{color:var(--gold);font-size:16px;line-height:1}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#C7D6DE;padding:72px 0 32px}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
  .footer-brand{display:flex;align-items:flex-start;gap:12px;margin-bottom:18px}
  .footer-brand strong{display:block;color:#fff;font-size:18px;font-weight:700}
  .footer-brand em{display:block;font-style:normal;font-size:13px;color:#8FA6B2;margin-top:3px}
  .site-footer h4{color:#fff;font-size:15px;margin:0 0 16px;font-weight:600}
  .footer-desc{font-size:14px;line-height:1.9;color:#9FB4BF;margin:0}
  .footer-list li{margin-bottom:10px}
  .footer-list a{font-size:14px;color:#C7D6DE}
  .footer-list a:hover{color:#7FD8C9;text-decoration:none}
  .footer-divider{height:1px;background:rgba(255,255,255,.12);margin:44px 0 24px}
  .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-3)}
  .footer-bottom-links{display:flex;flex-wrap:wrap;gap:16px}
  .footer-bottom-links a{font-size:13px;color:var(--ink-3)}
  .footer-bottom-links a:hover{color:#7FD8C9}

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .mega-panel{width:640px;grid-template-columns:1fr 1fr}
    .mega-entry{grid-column:span 2}
  }
  @media (max-width:1023px){
    .section{padding:72px 0}
    .header-inner{gap:16px}
    .nav-burger{display:inline-flex;margin-left:auto}
    .search-icon{display:none}
    .mega{display:none}
    .main-nav{
      position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);background:#fff;z-index:70;
      flex-direction:column;align-items:flex-start;gap:0;margin:0;
      padding:78px 24px 32px;transform:translateX(105%);
      transition:transform .26s ease;overflow-y:auto;box-shadow:-18px 0 40px -24px rgba(11,31,42,.5);
    }
    .nav-link{width:100%;padding:16px 0;font-size:16px;border-bottom:1px solid var(--line)}
    .nav-link::after{display:none}
    .nav-link.is-active{padding-left:12px;border-left:3px solid var(--primary)}
    .nav-toggle-input:checked ~ .main-nav{transform:translateX(0)}
    .nav-toggle-input:checked ~ .nav-mask{display:block;position:fixed;inset:0;background:rgba(11,31,42,.45);z-index:65}
    .nav-close{display:inline-flex}
    .cat-hero h1{font-size:32px}
    .notes-grid{grid-template-columns:1fr;gap:32px}
    .rel-grid{grid-template-columns:1fr 1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (max-width:767px){
    .container{padding:0 20px}
    .section{padding:56px 0}
    .topbar-links a:first-child{display:none}
    .header-actions .btn{height:40px;padding:0 16px;font-size:14px}
    .cat-hero{min-height:auto}
    .cat-hero-inner{padding-top:40px;padding-bottom:40px}
    .cat-hero h1{font-size:28px;line-height:1.4}
    .cat-hero-sub{font-size:15px}
    .section-title{font-size:24px}
    .tl-item{padding-left:40px;padding-bottom:20px}
    .timeline::before{left:9px}
    .tl-dot{left:1px;top:18px;width:16px;height:16px}
    .tl-card{grid-template-columns:1fr;gap:16px;padding:16px}
    .tl-body h3{font-size:18px}
    .rel-grid{grid-template-columns:1fr}
    .cta-band{padding:26px;gap:20px}
    .cta-band h2{font-size:20px}
    .cta-actions{width:100%}
    .cta-actions .btn{flex:1 1 auto;justify-content:center}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .faq-item summary{font-size:16px;padding:18px 18px}
    .faq-answer{padding:0 18px 18px}
  }
  @media (max-width:520px){
    .logo-text em{display:none}
    .header-actions .btn span.long{display:none}
  }

/* roulang page: category4 */
:root{
  --ink:#0B1F2A;
  --ink-2:#3B5566;
  --ink-3:#7C8F9B;
  --primary:#0F5570;
  --primary-700:#0A4257;
  --primary-100:#E4EFF4;
  --accent:#14A38B;
  --gold:#D9A24A;
  --bg:#F6F9FA;
  --surface:#FFFFFF;
  --line:#E3EBEF;
  --shadow-rest:0 1px 2px rgba(11,31,42,.04), 0 12px 28px -14px rgba(11,31,42,.16);
  --shadow-hover:0 1px 2px rgba(11,31,42,.04), 0 20px 34px -18px rgba(11,31,42,.22);
  --radius-card:16px;
  --radius-cover:20px;
  --radius-btn:10px;
}
*,*::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",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease, opacity .18s ease;}
a:hover{color:var(--primary-700);text-decoration:underline;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:.01em;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 顶栏 ============ */
.topbar{background:var(--primary-100);border-bottom:1px solid var(--line);}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--ink-2);}
.topbar-tag{letter-spacing:.04em;}
.topbar-links{display:flex;gap:18px;}
.topbar-links a{font-size:13px;color:var(--primary);text-decoration:none;}
.topbar-links a:hover{color:var(--primary-700);text-decoration:underline;}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:60;}
.nav-wrap{background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.nav-wrap.is-scrolled{box-shadow:0 8px 24px -18px rgba(11,31,42,.35);}
.nav-inner{height:72px;display:flex;align-items:center;gap:24px;}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0;}
.brand:hover{text-decoration:none;}
.logo-mark{width:40px;height:40px;border-radius:12px;background:var(--primary-100);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.brand-text strong{display:block;font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.02em;line-height:1.25;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.08em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{position:relative;padding:10px 14px;font-size:15px;color:var(--ink-2);border-radius:8px;text-decoration:none;white-space:nowrap;}
.nav-link:hover{color:var(--primary);background:var(--primary-100);text-decoration:none;}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;text-decoration:none;}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-700);color:#fff;box-shadow:var(--shadow-hover);}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-100);color:var(--primary-700);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);background:none;border:0;padding:0;text-decoration:none;}
.btn-link:hover{text-decoration:none;color:var(--primary-700);}
.btn-link .arrow{transition:transform .18s ease;}
.btn-link:hover .arrow{transform:translateX(3px);}
.icon-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--surface);display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);transition:border-color .18s ease,color .18s ease,background .18s ease;}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100);}

/* ============ Mega 面板 ============ */
.mega{position:relative;}
.mega-trigger{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:10px;border:1px solid var(--line);font-size:14px;color:var(--ink-2);background:var(--surface);transition:border-color .18s ease,color .18s ease;}
.mega-trigger:hover{border-color:var(--primary);color:var(--primary);}
.mega-panel{position:absolute;top:calc(100% + 12px);right:0;width:720px;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 60px -24px rgba(11,31,42,.32);padding:28px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .16s ease,transform .16s ease,visibility .16s ease;}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col h5{margin:0 0 12px;font-size:12px;letter-spacing:.08em;color:var(--ink-3);font-weight:600;}
.mega-list li{margin-bottom:10px;}
.mega-list a{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);text-decoration:none;padding:4px 0;}
.mega-list a:hover{color:var(--primary);text-decoration:none;}
.mega-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0;}
.mega-news li{margin-bottom:14px;}
.mega-news a{display:block;font-size:14px;color:var(--ink);text-decoration:none;line-height:1.6;}
.mega-news a:hover{color:var(--primary);text-decoration:none;}
.mega-news time{display:block;font-size:12px;color:var(--ink-3);margin-top:2px;}
.mega-card{display:block;border:1px solid var(--line);border-radius:16px;overflow:hidden;text-decoration:none;background:var(--surface);}
.mega-card:hover{text-decoration:none;box-shadow:var(--shadow-hover);transform:translateY(-2px);transition:box-shadow .18s ease,transform .18s ease;}
.mega-card img{width:100%;height:96px;object-fit:cover;}
.mega-card span{display:block;padding:10px 12px;font-size:13px;color:var(--ink);line-height:1.5;}

/* ============ 移动端抽屉 ============ */
.hamburger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;background:var(--surface);}
.hamburger:hover{border-color:var(--primary);}
.drawer-mask{position:fixed;inset:0;background:rgba(11,31,42,.45);opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:80;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(340px,88vw);background:var(--surface);z-index:90;transform:translateX(102%);transition:transform .24s ease;padding:24px;overflow-y:auto;}
.drawer.is-open{transform:translateX(0);}
.drawer-close{position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-2);}
.drawer-title{font-size:12px;letter-spacing:.08em;color:var(--ink-3);margin:24px 0 10px;font-weight:600;}
.drawer-nav li{margin-bottom:6px;}
.drawer-nav a{display:block;padding:12px 14px;border-radius:10px;font-size:15px;color:var(--ink);text-decoration:none;border:1px solid var(--line);}
.drawer-nav a:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-100);text-decoration:none;}
.drawer-nav a.is-active{background:var(--primary-100);color:var(--primary);border-color:var(--primary);font-weight:600;}

/* ============ 页面 Hero ============ */
.page-hero{position:relative;background:var(--primary-100);overflow:hidden;min-height:320px;display:flex;align-items:center;}
.page-hero::after{content:"";position:absolute;top:0;right:0;bottom:0;width:46%;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.12;}
.page-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;}
.crumb{font-size:13px;color:var(--ink-2);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb a{color:var(--primary);text-decoration:none;}
.crumb a:hover{text-decoration:underline;}
.crumb span.sep{color:var(--ink-3);}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:12px;letter-spacing:.08em;color:var(--primary);margin-bottom:18px;font-weight:600;}
.page-hero h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:.01em;max-width:760px;}
.page-hero .hero-sub{margin-top:16px;font-size:16px;color:var(--ink-2);max-width:640px;}
.hero-meta{margin-top:24px;display:flex;flex-wrap:wrap;gap:28px;}
.hero-meta div{font-size:13px;color:var(--ink-2);}
.hero-meta strong{display:block;font-size:22px;color:var(--primary);font-weight:700;line-height:1.4;}

/* ============ chips ============ */
.chips-bar{background:var(--surface);border-bottom:1px solid var(--line);}
.chips-inner{display:flex;flex-wrap:wrap;gap:10px;padding:16px 0;}
.chip{display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:14px;color:var(--ink-2);text-decoration:none;transition:border-color .18s ease,color .18s ease,background .18s ease;}
.chip:hover{border-color:var(--accent);color:var(--accent);background:#F1FAF8;text-decoration:none;}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head h2{font-size:30px;font-weight:600;}
.section-head .section-desc{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:640px;}
.bg-white{background:var(--surface);}
.bg-soft{background:var(--bg);}
.hairline{height:1px;background:var(--line);}

/* ============ 分类页4：左窄右宽布局 ============ */
.split-layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:48px;align-items:start;}
.aside-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-rest);padding:26px;position:sticky;top:104px;}
.aside-card h3{font-size:18px;font-weight:600;margin-bottom:14px;}
.aside-card p{font-size:14.5px;color:var(--ink-2);line-height:1.85;}
.aside-figure{margin-top:22px;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);}
.aside-figure img{width:100%;height:170px;object-fit:cover;}
.aside-figure figcaption{padding:10px 14px;font-size:12.5px;color:var(--ink-3);background:var(--surface);}
.aside-list{margin-top:22px;border-top:1px solid var(--line);padding-top:18px;}
.aside-list li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--ink-2);padding:8px 0;border-bottom:1px dashed var(--line);}
.aside-list li:last-child{border-bottom:0;}
.aside-list b{color:var(--primary);font-weight:600;}

.group-title{display:flex;align-items:center;gap:12px;font-size:14px;letter-spacing:.08em;color:var(--ink-3);font-weight:600;margin:36px 0 12px;}
.group-title:first-child{margin-top:0;}
.group-title::after{content:"";flex:1;height:1px;background:var(--line);}
.rows{border-top:1px solid var(--line);}
.row-item{display:flex;align-items:center;gap:20px;padding:22px 16px;border-bottom:1px solid var(--line);text-decoration:none;transition:background .18s ease,padding-left .18s ease;position:relative;}
.row-item::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:4px;background:var(--primary);transform:scaleY(0);transform-origin:center;transition:transform .2s ease;}
.row-item:hover{background:var(--primary-100);padding-left:24px;text-decoration:none;}
.row-item:hover::before{transform:scaleY(1);}
.row-main{min-width:0;flex:1;}
.row-main h3{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.row-item:hover .row-main h3{color:var(--primary);}
.row-main p{font-size:14px;color:var(--ink-2);line-height:1.7;margin:0;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.row-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;flex-shrink:0;}
.row-side time{font-size:13px;color:var(--ink-3);white-space:nowrap;}
.row-arrow{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-3);transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;}
.row-item:hover .row-arrow{background:var(--primary);border-color:var(--primary);color:#fff;transform:translateX(3px);}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:#E8F6F3;color:var(--accent);}

/* ============ 相关分类 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-rest);text-decoration:none;display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease;}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);text-decoration:none;}
.related-card img{width:100%;height:160px;object-fit:cover;transition:transform .3s ease;}
.related-card:hover img{transform:scale(1.03);}
.related-body{padding:20px;}
.related-body h3{font-size:18px;font-weight:600;color:var(--ink);margin:10px 0 8px;}
.related-card:hover .related-body h3{color:var(--primary);}
.related-body p{font-size:14px;color:var(--ink-2);line-height:1.7;margin:0;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;font-size:18px;font-weight:600;color:var(--ink);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-sign{width:26px;height:26px;flex-shrink:0;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:16px;transition:transform .22s ease,background .18s ease;}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] .faq-sign{transform:rotate(45deg);background:var(--primary-100);}
.faq-answer{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:840px;}

/* ============ CTA 段 ============ */
.cta-band{background:var(--primary-100);border-radius:var(--radius-cover);padding:40px 44px;border-left:4px solid var(--primary);display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{font-size:26px;font-weight:600;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--ink-2);margin:0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.star{color:var(--gold);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#C7D5DD;margin-top:0;padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{display:block;color:#fff;font-size:17px;font-weight:700;line-height:1.3;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:#8FA6B3;letter-spacing:.06em;}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB4C0;margin:0;}
.site-footer h4{margin:0 0 16px;font-size:14px;color:#fff;font-weight:600;letter-spacing:.04em;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:#9FB4C0;text-decoration:none;}
.footer-list a:hover{color:#fff;text-decoration:underline;}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:40px 0 20px;}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom-links a{font-size:13px;color:#8FA6B3;}
.footer-bottom-links a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .mega-panel{width:640px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .mega{display:none;}
  .hamburger{display:inline-flex;}
  .nav-inner{height:66px;gap:16px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .split-layout{grid-template-columns:1fr;gap:32px;}
  .aside-card{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-hero h1{font-size:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .topbar-inner{font-size:12px;}
  .topbar-links a:first-child{display:none;}
  .page-hero{min-height:auto;}
  .page-hero::after{width:100%;opacity:.08;}
  .page-hero .container{padding-top:44px;padding-bottom:44px;}
  .page-hero h1{font-size:28px;line-height:1.3;}
  .hero-meta{gap:20px;}
  .hero-meta strong{font-size:19px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2{font-size:24px;}
  .related-grid{grid-template-columns:1fr;}
  .row-item{flex-direction:column;align-items:flex-start;gap:12px;padding:20px 12px;}
  .row-side{flex-direction:row;align-items:center;justify-content:space-between;width:100%;}
  .cta-band{padding:28px 22px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;min-width:140px;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-item summary{font-size:16px;padding:18px 2px;}
}
@media (max-width:520px){
  .brand-text em{display:none;}
  .btn{height:46px;width:100%;}
  .nav-actions .btn-sm{display:none;}
  .hero-meta div{flex:1 1 40%;}
}

/* roulang page: category3 */
:root{
    --ink:#0B1F2A;
    --ink-2:#3B5566;
    --ink-3:#7C8F9B;
    --primary:#0F5570;
    --primary-700:#0A4257;
    --primary-100:#E4EFF4;
    --accent:#14A38B;
    --accent-100:#E3F5F1;
    --gold:#D9A24A;
    --bg:#F6F9FA;
    --surface:#FFFFFF;
    --line:#E3EBEF;
    --shadow-sm:0 1px 2px rgba(11,31,42,.04), 0 12px 28px -14px rgba(11,31,42,.16);
    --shadow-md:0 2px 4px rgba(11,31,42,.05), 0 20px 36px -20px rgba(11,31,42,.22);
    --radius-card:16px;
    --radius-cover:20px;
    --radius-btn:10px;
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:Inter,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    letter-spacing:.01em;
  }
  img{max-width:100%;display:block;}
  a{color:var(--primary);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
  a:hover{color:var(--primary-700);text-decoration:underline;}
  button,input{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  .num{font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
  .section{padding:96px 0;}
  .section-tight{padding:72px 0;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
  .section-title{font-size:30px;line-height:1.35;font-weight:600;letter-spacing:.01em;}
  .section-sub{font-size:14px;line-height:1.7;color:var(--ink-2);max-width:620px;margin-top:10px;}
  .eyebrow{
    display:inline-block;font-size:12px;line-height:20px;letter-spacing:.18em;
    color:var(--primary);background:var(--primary-100);border-radius:999px;padding:2px 12px;margin-bottom:14px;
  }
  .rule{height:1px;background:var(--line);border:0;margin:0;}

  /* ============ 顶栏 ============ */
  .topbar{background:var(--primary-100);border-bottom:1px solid rgba(15,85,112,.08);}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;font-size:13px;color:var(--ink-2);}
  .topbar-tag{display:flex;align-items:center;gap:8px;}
  .topbar-dot{width:6px;height:6px;border-radius:999px;background:var(--accent);display:inline-block;}
  .topbar-links{display:flex;align-items:center;gap:20px;}
  .topbar-links a{font-size:13px;color:var(--primary);}
  .topbar-links a:hover{color:var(--primary-700);}

  /* ============ 主导航 ============ */
  .site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);}
  .site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(11,31,42,.4);}
  .header-inner{display:flex;align-items:center;gap:28px;min-height:72px;}
  .brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
  .brand:hover{text-decoration:none;}
  .brand-mark{
    width:42px;height:42px;border-radius:12px;background:linear-gradient(150deg,#0F5570 0%,#14A38B 100%);
    display:flex;align-items:center;justify-content:center;flex-shrink:0;
    box-shadow:0 8px 18px -12px rgba(15,85,112,.9);
  }
  .brand-text strong{display:block;font-size:18px;font-weight:700;color:var(--ink);line-height:1.3;letter-spacing:.01em;}
  .brand-text em{display:block;font-style:normal;font-size:11px;line-height:1.4;color:var(--ink-3);letter-spacing:.06em;}

  .main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:40px;padding:0 12px;
    font-size:15px;color:var(--ink-2);border-radius:8px;text-decoration:none;
  }
  .nav-link:hover{color:var(--primary);background:var(--primary-100);text-decoration:none;}
  .nav-link.is-active{color:var(--primary);font-weight:600;}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);
  }
  .nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}

  .mega-wrap{position:relative;}
  .mega-trigger{
    display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border:1px solid var(--line);
    border-radius:var(--radius-btn);background:var(--surface);font-size:14px;color:var(--ink-2);cursor:pointer;
  }
  .mega-trigger:hover{border-color:var(--primary);color:var(--primary);}
  .mega-caret{width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-1px);}
  .mega-panel{
    position:absolute;top:calc(100% + 12px);right:0;width:720px;background:var(--surface);
    border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow-md);
    display:grid;grid-template-columns:1.05fr 1fr .95fr;gap:24px;
    opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .16s ease,transform .16s ease,visibility .16s;
  }
  .mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
  .mega-title{font-size:12px;letter-spacing:.14em;color:var(--ink-3);margin-bottom:12px;}
  .mega-list li + li{margin-top:10px;}
  .mega-list a{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);text-decoration:none;}
  .mega-list a:hover{color:var(--primary);text-decoration:none;}
  .mega-ico{width:22px;height:22px;border-radius:6px;background:var(--accent-100);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0;}
  .mega-post{font-size:14px;color:var(--ink-2);line-height:1.55;}
  .mega-post time{display:block;font-size:12px;color:var(--ink-3);margin-top:4px;}
  .mega-post:hover{color:var(--primary);text-decoration:none;}
  .mega-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--surface);}
  .mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .mega-card span{display:block;padding:12px 14px;font-size:14px;font-weight:600;color:var(--ink);}

  .icon-btn{
    width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);color:var(--ink-2);cursor:pointer;
  }
  .icon-btn:hover{border-color:var(--primary);color:var(--primary);}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;text-decoration:none;transition:all .18s ease;
  }
  .btn:hover{text-decoration:none;}
  .btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px -16px rgba(15,85,112,.9);}
  .btn-primary:hover{background:var(--primary-700);color:#fff;transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:var(--surface);color:var(--primary);border-color:var(--primary);}
  .btn-ghost:hover{background:var(--primary-100);color:var(--primary-700);}
  .btn-light{background:#fff;color:var(--primary);border-color:rgba(255,255,255,.4);}
  .btn-light:hover{background:#fff;color:var(--primary-700);transform:translateY(-1px);}
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}
  .btn:focus-visible,.icon-btn:focus-visible,.nav-link:focus-visible,.mega-trigger:focus-visible,a:focus-visible{
    outline:2px solid var(--accent);outline-offset:2px;
  }
  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);}
  .text-link .arrow{transition:transform .18s ease;}
  .text-link:hover{color:var(--primary-700);text-decoration:none;}
  .text-link:hover .arrow{transform:translateX(3px);}

  .hamburger{display:none;width:42px;height:42px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);cursor:pointer;}
  .hamburger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
  .hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
  .hamburger span::before{top:-6px;}
  .hamburger span::after{top:6px;}

  .drawer-toggle{position:absolute;opacity:0;pointer-events:none;}
  .mobile-drawer{
    position:fixed;inset:0;z-index:80;visibility:hidden;opacity:0;transition:opacity .2s ease,visibility .2s;
  }
  .drawer-mask{position:absolute;inset:0;background:rgba(11,31,42,.45);}
  .drawer-panel{
    position:absolute;top:0;right:0;width:min(88vw,360px);height:100%;background:var(--surface);
    padding:24px;overflow-y:auto;transform:translateX(12px);transition:transform .22s ease;box-shadow:var(--shadow-md);
  }
  .drawer-toggle:checked ~ .mobile-drawer{visibility:visible;opacity:1;}
  .drawer-toggle:checked ~ .mobile-drawer .drawer-panel{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
  .drawer-head strong{font-size:17px;}
  .drawer-close{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;color:var(--ink-2);cursor:pointer;}
  .drawer-nav a{display:block;padding:13px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);text-decoration:none;}
  .drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);}
  .drawer-cta{margin-top:22px;display:grid;gap:10px;}

  /* ============ 分类 Hero ============ */
  .category-hero{position:relative;overflow:hidden;background:var(--surface);border-bottom:1px solid var(--line);}
  .hero-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:right center;opacity:.12;
  }
  .hero-inner{position:relative;z-index:2;min-height:320px;display:flex;flex-direction:column;justify-content:center;padding:64px 0;}
  .hero-crumb{font-size:13px;color:var(--ink-3);margin-bottom:18px;}
  .hero-crumb a{color:var(--ink-2);}
  .hero-crumb a:hover{color:var(--primary);}
  .hero-crumb .sep{margin:0 8px;color:var(--ink-3);}
  .hero-title{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:.01em;color:var(--ink);max-width:760px;}
  .hero-title .hl{color:var(--primary);}
  .hero-sub{font-size:16px;line-height:1.8;color:var(--ink-2);max-width:640px;margin-top:16px;}
  .hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:26px;}
  .hero-meta div{border-left:3px solid var(--primary-100);padding-left:12px;}
  .hero-meta strong{display:block;font-size:20px;font-weight:700;color:var(--primary);line-height:1.3;}
  .hero-meta span{font-size:12px;letter-spacing:.1em;color:var(--ink-3);}

  /* ============ 锚点 chips ============ */
  .chips-bar{background:var(--surface);border-bottom:1px solid var(--line);}
  .chips-bar .container{padding-top:18px;padding-bottom:18px;}
  .chips{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 14px;border-radius:999px;
    border:1px solid var(--line);background:var(--bg);font-size:14px;color:var(--ink-2);text-decoration:none;
  }
  .chip:hover{border-color:var(--accent);color:var(--primary);background:var(--accent-100);text-decoration:none;}
  .chip.is-key{background:var(--accent-100);border-color:transparent;color:var(--primary);font-weight:600;}

  /* ============ 说明区 ============ */
  .overview-grid{display:grid;grid-template-columns:1.5fr .9fr;gap:48px;align-items:start;}
  .prose p{font-size:16px;line-height:1.9;color:var(--ink-2);}
  .prose p + p{margin-top:1.2em;}
  .prose strong{color:var(--ink);}
  .stat-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:26px;box-shadow:var(--shadow-sm);
  }
  .stat-card h3{font-size:18px;font-weight:600;margin-bottom:18px;}
  .stat-list li{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line);}
  .stat-list li:last-child{border-bottom:0;padding-bottom:0;}
  .stat-list .k{font-size:14px;color:var(--ink-2);}
  .stat-list .v{font-size:20px;font-weight:700;color:var(--primary);}
  .stat-list .v small{font-size:12px;font-weight:500;color:var(--ink-3);margin-left:3px;}

  /* ============ 画廊卡 ============ */
  .gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px 28px;}
  .gallery-card{display:block;text-decoration:none;color:inherit;border:0;background:transparent;}
  .gallery-card:hover{text-decoration:none;color:inherit;}
  .gallery-shot{
    position:relative;border-radius:var(--radius-cover);overflow:hidden;background:var(--primary-100);aspect-ratio:16/10;
    box-shadow:var(--shadow-sm);transition:box-shadow .2s ease,transform .2s ease;
  }
  .gallery-shot img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
  .gallery-card:hover .gallery-shot{box-shadow:var(--shadow-md);transform:translateY(-3px);}
  .gallery-card:hover .gallery-shot img{transform:scale(1.03);}
  .gallery-badge{
    position:absolute;top:14px;left:14px;display:inline-flex;align-items:center;height:26px;padding:0 12px;
    border-radius:999px;background:rgba(227,245,241,.94);color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.04em;
  }
  .gallery-body{padding:18px 2px 0;}
  .gallery-title{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink);transition:color .18s ease;}
  .gallery-card:hover .gallery-title{color:var(--primary);}
  .gallery-note{font-size:14px;line-height:1.85;color:var(--ink-2);margin-top:8px;}
  .gallery-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;font-size:13px;color:var(--ink-3);}
  .gallery-foot .arrow{color:var(--primary);transition:transform .18s ease;}
  .gallery-card:hover .gallery-foot .arrow{transform:translateX(3px);}

  /* ============ 相关分类 ============ */
  .related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
  .related-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;
    display:block;text-decoration:none;color:inherit;transition:all .2s ease;
  }
  .related-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-3px);text-decoration:none;color:inherit;}
  .related-card .tag{font-size:12px;letter-spacing:.1em;color:var(--accent);font-weight:600;}
  .related-card h3{font-size:17px;font-weight:600;margin:10px 0 8px;}
  .related-card p{font-size:13px;line-height:1.8;color:var(--ink-2);}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:880px;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 2px;font-size:17px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--primary);}
  .faq-item .plus{
    width:26px;height:26px;flex-shrink:0;position:relative;border-radius:8px;background:var(--primary-100);
    transition:transform .2s ease,background .2s ease;
  }
  .faq-item .plus::before,.faq-item .plus::after{content:"";position:absolute;top:50%;left:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);}
  .faq-item .plus::before{width:12px;height:2px;}
  .faq-item .plus::after{width:2px;height:12px;}
  .faq-item[open] summary{color:var(--primary);}
  .faq-item[open] .plus{transform:rotate(45deg);background:var(--accent-100);}
  .faq-answer{padding:0 2px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:760px;}

  /* ============ CTA ============ */
  .cta-band{background:var(--primary-100);border-left:4px solid var(--primary);}
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;padding:44px 0;}
  .cta-band .container{padding-left:24px;}
  .cta-inner h2{font-size:26px;font-weight:600;line-height:1.4;}
  .cta-inner p{font-size:15px;color:var(--ink-2);margin-top:8px;max-width:560px;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
  .gold-star{color:var(--gold);}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--ink);color:#C9D6DD;margin-top:0;}
  .site-footer .container{padding-top:72px;padding-bottom:28px;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
  .footer-brand strong{display:block;font-size:18px;color:#fff;font-weight:700;line-height:1.3;}
  .footer-brand em{display:block;font-style:normal;font-size:12px;color:#8FA6B2;letter-spacing:.06em;}
  .footer-desc{font-size:14px;line-height:1.9;color:#A9BCC6;max-width:420px;}
  .site-footer h4{font-size:14px;font-weight:600;color:#fff;letter-spacing:.08em;margin-bottom:16px;}
  .footer-list li + li{margin-top:10px;}
  .footer-list a{font-size:14px;color:#A9BCC6;text-decoration:none;}
  .footer-list a:hover{color:#7FD8C9;text-decoration:none;}
  .footer-divider{height:1px;background:rgba(255,255,255,.12);margin:44px 0 22px;}
  .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);}
  .footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px;}
  .footer-bottom-links a{font-size:13px;color:#8FA6B2;}
  .footer-bottom-links a:hover{color:#7FD8C9;}

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .main-nav{display:none;}
    .mega-wrap{display:none;}
    .hamburger{display:inline-flex;}
    .section{padding:72px 0;}
    .section-tight{padding:56px 0;}
    .overview-grid{grid-template-columns:1fr;gap:32px;}
    .gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .hero-title{font-size:34px;}
    .category-hero .hero-inner{min-height:280px;padding:52px 0;}
  }
  @media (max-width:767px){
    .container{padding:0 20px;}
    .cta-band .container{padding-left:20px;}
    .section{padding:56px 0;}
    .section-title{font-size:24px;}
    .hero-title{font-size:28px;line-height:1.32;}
    .hero-sub{font-size:15px;}
    .hero-meta{gap:18px;}
    .gallery-grid{grid-template-columns:1fr;gap:28px;}
    .related-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .cta-inner{padding:36px 0;}
    .cta-inner h2{font-size:22px;}
    .topbar-links{display:none;}
    .gallery-title{font-size:17px;}
  }
  @media (max-width:520px){
    .brand-text em{display:none;}
    .hero-meta div{padding-left:10px;}
    .btn{width:100%;}
    .cta-actions{width:100%;}
    .header-inner{gap:12px;}
  }