/* roulang page: index */
:root{
  --brand-900:#0B2E6F;--brand-700:#12439F;--brand-600:#1A5CD6;--brand-300:#7FA8F0;--brand-100:#E8F0FE;--brand-50:#F4F8FE;
  --accent-strong:#D9480F;--accent:#F26A21;--accent-100:#FFEDE3;
  --ink:#16202E;--ink-2:#5A6B80;--ink-3:#8A97A8;
  --bg:#F6F8FC;--surface:#FFFFFF;--surface-2:#F1F5FB;--line:#E6ECF5;--line-strong:#D7E1EF;--footer-bg:#0F1B2D;
  --ok:#16A34A;--warn:#E5A100;--danger:#D93A3A;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow","Inter",var(--font-cn);
  --container:1200px;--container-narrow:1080px;--container-read:760px;
  --gutter:24px;--section-y:clamp(48px,7vw,96px);
  --r-card:14px;--r-media:10px;--r-btn:10px;--r-pill:999px;--r-input:10px;--r-badge:6px;
  --sh-1:0 1px 2px rgba(16,38,73,.06);
  --sh-2:0 8px 24px -12px rgba(16,38,73,.18);
  --sh-3:0 16px 40px -16px rgba(26,92,214,.28);
  --sh-focus:0 0 0 3px rgba(26,92,214,.16);
  --nav-h1:64px;--nav-h2:56px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
@media (min-width:1440px){:root{--container:1280px}}
@media (min-width:1024px) and (max-width:1199px){:root{--container:1160px}}
@media (max-width:1023px){:root{--gutter:20px;--nav-h1:56px;--nav-h2:48px}}
@media (max-width:767px){:root{--gutter:16px}}
@media (max-width:479px){:root{--gutter:14px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--nav-h1) + var(--nav-h2) + 8px);scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(30px,3.6vw,50px);line-height:1.22}
h2{font-size:clamp(24px,2.6vw,36px);line-height:1.3}
h3{font-size:21px;line-height:1.4;font-weight:600}
p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--brand-600)}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.section{padding:var(--section-y) 0}
.section--tight{padding:calc(var(--section-y) * .6) 0}
.section--surface{background:var(--surface)}
.section--tint{background:var(--surface-2)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-600);color:#fff;padding:10px 16px;border-radius:0 0 var(--r-btn) 0;z-index:200}
.skip-link:focus{left:0;color:#fff}

/* ---------- 导航 ---------- */
.site-header{position:relative;z-index:60;background:var(--surface);border-bottom:1px solid var(--line)}
.nav-top{height:var(--nav-h1)}
.nav-top .container{height:100%;display:flex;align-items:center;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);white-space:nowrap}
.logo:hover{color:var(--ink)}
.logo-mark{width:28px;height:28px;flex:0 0 28px;border-radius:9px;background:linear-gradient(135deg,var(--brand-600),var(--brand-700));position:relative;overflow:hidden}
.logo-mark::after{content:"";position:absolute;left:4px;right:4px;top:50%;height:3px;border-radius:3px;background:rgba(255,255,255,.9);transform:translateY(-50%) rotate(-14deg)}
.logo b{font-weight:700;color:var(--brand-700)}
.logo .latin{font-family:var(--font-num);font-size:.92em;font-weight:600;letter-spacing:.02em}
.nav-note{font-size:13px;color:var(--ink-3);line-height:1.4;padding-left:16px;border-left:1px solid var(--line);white-space:nowrap}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{position:relative;width:300px}
.search input{
  width:100%;height:42px;padding:0 40px 0 16px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid transparent;color:var(--ink);font-size:14px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.search input::placeholder{color:var(--ink-3)}
.search input:focus{background:var(--surface);border-color:var(--brand-600);box-shadow:var(--sh-focus)}
.search svg{position:absolute;right:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;stroke:var(--ink-3);fill:none;stroke-width:2;pointer-events:none}
.search-toggle{display:none;width:44px;height:44px;border-radius:var(--r-pill);border:1px solid var(--line-strong);align-items:center;justify-content:center}
.search-toggle svg{width:20px;height:20px;stroke:var(--brand-700);fill:none;stroke-width:2}
.burger{display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line-strong);align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:2px;background:var(--brand-700);border-radius:2px;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-700);border-radius:2px}
.burger span::before{top:-6px}.burger span::after{top:6px}

.channels{position:sticky;top:0;z-index:55;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);box-shadow:var(--sh-1)}
.channels-inner{height:var(--nav-h2);display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;scroll-snap-type:x proximity;mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 22px),transparent 100%)}
.channels-inner::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;scroll-snap-align:start;display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:var(--r-pill);font-size:14px;font-weight:600;color:var(--brand-700);background:transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.pill:hover{background:var(--brand-100);color:var(--brand-700)}
.pill.is-active{background:var(--brand-600);color:#fff}
.pill.is-active:hover{background:var(--brand-700);color:#fff}
.pill.small{font-size:13px;height:32px;padding:0 14px}
.channels-hint{margin-left:auto;font-size:13px;color:var(--ink-3);padding-left:12px;white-space:nowrap}

/* 移动抽屉 + 搜索面板 */
.drawer,.search-panel{position:fixed;left:0;right:0;top:0;bottom:0;z-index:120;background:var(--surface);display:none;flex-direction:column;padding:20px var(--gutter) 88px;overflow-y:auto}
.drawer.is-open,.search-panel.is-open{display:flex;animation:slideUp .18s var(--ease)}
@keyframes slideUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.drawer-head,.search-panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:16px;font-weight:700}
.icon-close{width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--ink-2);line-height:1}
.drawer-group{margin-bottom:22px}
.drawer-group h3{font-size:13px;color:var(--ink-3);font-weight:600;letter-spacing:.06em;margin-bottom:10px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer-link:hover{color:var(--brand-600)}
.drawer-cta{position:fixed;left:var(--gutter);right:var(--gutter);bottom:20px}
.drawer-cta .btn{width:100%;height:48px;justify-content:center}
.hot-words{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.hot-words .pill{border:1px solid var(--line);background:var(--surface-2);color:var(--ink-2)}
.search-panel form{margin-bottom:8px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--accent-strong);color:#fff}
.btn-primary:hover{background:#C94512;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-secondary{background:transparent;border-color:var(--brand-600);color:var(--brand-700)}
.btn-secondary:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-mini{height:34px;padding:0 14px;font-size:13px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700);padding-bottom:2px;background-image:linear-gradient(var(--brand-600),var(--brand-600));background-repeat:no-repeat;background-size:0 1px;background-position:0 100%;transition:background-size .24s var(--ease)}
.link-more:hover{background-size:100% 1px;color:var(--brand-600)}
.link-more svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2}

/* ---------- 通用版块头 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head .kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);letter-spacing:.04em;margin-bottom:8px}
.section-head .kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.section-head h2{max-width:820px}
.section-head .sub{margin-top:10px;font-size:14px;color:var(--ink-3);line-height:1.7}
.section-head--dark h2,.section-head--dark .sub{color:#fff}
.section-head--dark .kicker{color:var(--brand-300)}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(26,92,214,.035) 0 1px,transparent 1px 12px);pointer-events:none}
.hero::after{content:"";position:absolute;width:520px;height:520px;right:-160px;top:-180px;border-radius:50%;background:radial-gradient(circle,rgba(26,92,214,.10),transparent 68%);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;padding:calc(var(--section-y) * .9) 0 var(--section-y);min-height:540px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{max-width:16em}
.hero-lead{margin-top:20px;font-size:18px;line-height:1.7;color:var(--ink-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;align-items:stretch;gap:0;margin-top:44px;border-top:1px solid var(--line);padding-top:24px}
.hero-stats .stat{flex:1 1 0;padding-right:24px;margin-right:24px;border-right:1px solid var(--line)}
.hero-stats .stat:last-child{border-right:0;margin-right:0;padding-right:0}
.stat-num{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--brand-700);line-height:1.2}
.stat-num em{font-style:normal;font-size:16px;color:var(--ink-3);margin-left:2px}
.stat-label{font-size:13px;color:var(--ink-3);line-height:1.5;margin-top:4px}
.hero-media{position:relative}
.hero-media .frame{position:relative;aspect-ratio:16/10;border-radius:16px;overflow:hidden;background:var(--surface-2);box-shadow:var(--sh-2)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-badge{position:absolute;right:-8px;bottom:-18px;width:198px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:14px 16px}
.hero-badge .hb-title{font-size:13px;color:var(--ink-3)}
.hero-badge .hb-value{font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--accent-strong);line-height:1.3}
.hero-badge .hb-line{font-size:12px;color:var(--ink-2);line-height:1.5;margin-top:4px}

/* ---------- 编辑式编号行 ---------- */
.claims{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.claims .container{padding-top:48px;padding-bottom:48px}
.claims-bar{width:64px;height:3px;background:var(--brand-600);border-radius:3px;margin-bottom:36px}
.claims-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.claim{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:0 32px;border-right:1px solid var(--line)}
.claim:first-child{padding-left:0}
.claim:last-child{border-right:0;padding-right:0}
.claim-idx{font-family:var(--font-num);font-size:38px;font-weight:700;line-height:1;color:transparent;-webkit-text-stroke:1.5px rgba(26,92,214,.42)}
.claim h3{font-size:19px;margin-bottom:8px}
.claim p{font-size:14.5px;color:var(--ink-2);line-height:1.8}

/* ---------- 品牌故事 ---------- */
.story-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center}
.story-media{aspect-ratio:4/3;border-radius:16px;overflow:hidden;background:var(--surface-2);box-shadow:var(--sh-1)}
.story-media img{width:100%;height:100%;object-fit:cover}
.story-body h2{margin-bottom:20px}
.story-body p{color:var(--ink-2);line-height:1.85}
.tag-outline{display:inline-block;border:1px solid var(--line-strong);border-radius:var(--r-pill);padding:5px 14px;font-size:13px;color:var(--ink-2);background:var(--surface);margin:2px 8px 2px 0}
.story-tags{margin-top:18px}
.story-body .link-more{margin-top:22px}

/* ---------- 卡片 ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);display:flex;flex-direction:column;height:100%}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(26,92,214,.28)}
.card-link{display:flex;flex-direction:column;height:100%;color:inherit}
.card-link:hover{color:inherit}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-body h3{color:var(--brand-700)}
.card-desc{font-size:14.5px;color:var(--ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-badge);background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge--accent{background:var(--accent-100);color:var(--accent-strong)}
.badge--ok{background:rgba(22,163,74,.12);color:var(--ok)}
.meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3);margin-top:auto}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line-strong)}
.card--lead .card-body h3{font-size:20px}
.card--lead .card-media{aspect-ratio:16/9}

.featured-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.featured-grid .card--lead{grid-column:span 2;grid-row:span 1}
.featured-grid .card--lead .card-desc{-webkit-line-clamp:3}

/* ---------- 最新信息（CMS） ---------- */
.news{background:var(--surface)}
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.news-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);height:100%}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(26,92,214,.28)}
.news-card__link{display:flex;flex-direction:column;height:100%;color:inherit}
.news-card__link:hover{color:inherit}
.news-card__thumb{aspect-ratio:16/10;background:
  repeating-linear-gradient(135deg,rgba(26,92,214,.06) 0 6px,transparent 6px 14px),
  linear-gradient(135deg,var(--brand-100),var(--surface-2));
  position:relative;border-bottom:1px solid var(--line)}
.news-card__thumb::after{content:"";position:absolute;left:50%;top:50%;width:54px;height:54px;margin:-27px 0 0 -27px;border-radius:16px;border:2px solid rgba(26,92,214,.24)}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__title{font-size:18px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-card__title{color:var(--brand-700)}
.news-card__desc{font-size:14.5px;color:var(--ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card--lead .news-card__title{font-size:20px}
.news-card--lead .news-card__desc{-webkit-line-clamp:3}
@media (min-width:1024px){
  .news-grid{grid-template-columns:repeat(3,1fr)}
  .news-card--lead{grid-column:span 2}
  .news-card--lead .news-card__link{flex-direction:row}
  .news-card--lead .news-card__thumb{width:52%;aspect-ratio:auto;border-bottom:0;border-right:1px solid var(--line)}
  .news-card--lead .news-card__body{width:48%;justify-content:center}
}
.empty-state{grid-column:1/-1;border:1px dashed var(--line-strong);border-radius:12px;padding:38px 20px;text-align:center;color:var(--ink-3);font-size:14px;background:var(--surface-2)}
.empty-state a{display:inline-block;margin-top:6px;font-weight:600}

/* ---------- 深色流程区 ---------- */
.process{background:var(--brand-900);color:#fff;position:relative;overflow:hidden}
.process::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.035) 0 1px,transparent 1px 14px);pointer-events:none}
.process .container{position:relative}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.step{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);padding:26px 24px;transition:background-color .22s var(--ease),transform .22s var(--ease)}
.step:hover{background:rgba(255,255,255,.09);transform:translateY(-2px)}
.step-num{font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--accent);letter-spacing:.08em}
.step h3{color:#fff;font-size:18px;margin:12px 0 10px}
.step p{color:#B9C6D8;font-size:14.5px;line-height:1.8}
.process-note{margin-top:32px;font-size:14px;color:#B9C6D8}
.process-note a{color:#fff;font-weight:600;border-bottom:1px solid rgba(255,255,255,.4)}

/* ---------- 信任背书 ---------- */
.trust-bar{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-bar .container{display:grid;grid-template-columns:repeat(4,1fr);padding-top:32px;padding-bottom:32px}
.trust-item{padding:0 28px;border-right:1px solid var(--line-strong)}
.trust-item:first-child{padding-left:0}
.trust-item:last-child{border-right:0}
.trust-item .stat-num{color:var(--brand-900)}
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.logo-wall span{
  display:flex;align-items:center;justify-content:center;height:66px;border:1px solid var(--line);border-radius:var(--r-media);
  background:var(--surface);color:var(--ink-3);font-size:14px;font-weight:600;opacity:.75;transition:opacity .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.logo-wall span:hover{opacity:1;color:var(--brand-700);border-color:rgba(26,92,214,.28)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:calc(var(--nav-h1) + var(--nav-h2) + 24px)}
.faq-aside h2{margin-bottom:14px}
.faq-aside p{font-size:14.5px;color:var(--ink-2)}
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .2s var(--ease)}
.faq-item[open]{border-color:rgba(26,92,214,.28)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);position:relative;transition:color .2s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--brand-600);border-radius:0 3px 3px 0;opacity:0;transition:opacity .2s var(--ease)}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item[open] summary::before{opacity:1}
.faq-item summary .marker{flex:0 0 auto;width:18px;height:18px;position:relative;transition:transform .18s var(--ease)}
.faq-item summary .marker::before,.faq-item summary .marker::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px}
.faq-item summary .marker::before{left:0;top:8px;width:18px;height:2px}
.faq-item summary .marker::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] summary .marker{transform:rotate(180deg)}
.faq-item[open] summary .marker::after{opacity:0}
.faq-answer{padding:0 20px 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:52em}

/* ---------- 订阅 CTA ---------- */
.cta-panel{background:var(--brand-50);border:1px solid var(--line);border-radius:20px;padding:clamp(28px,4vw,52px);display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.cta-panel h2{margin-bottom:12px}
.cta-panel .cta-desc{font-size:15px;color:var(--ink-2);line-height:1.8;max-width:32em}
.subscribe-form{display:flex;gap:12px;flex-wrap:wrap}
.subscribe-form .field{flex:1 1 200px;min-width:0}
.subscribe-form input{
  width:100%;height:44px;padding:0 16px;border-radius:var(--r-input);border:1px solid var(--line-strong);
  background:#FBFCFE;font-size:15px;outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.subscribe-form input::placeholder{color:var(--ink-3)}
.subscribe-form input:focus{border-color:var(--brand-600);box-shadow:var(--sh-focus)}
.subscribe-form .btn{width:150px;justify-content:center}
.form-note{font-size:12px;color:var(--ink-3);margin-top:12px}
.form-feedback{margin-top:12px;font-size:13px;color:var(--ok);background:rgba(22,163,74,.12);border-radius:8px;padding:10px 14px;display:none}
.form-feedback.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:#B9C6D8;margin-top:0}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:56px 0 40px}
.footer-brand .logo{color:#fff;font-size:18px}
.footer-brand .logo b{color:#fff}
.footer-brand p{font-size:13px;line-height:1.8;color:#8595AB;margin-top:14px;max-width:28em}
.footer-col h3{color:#fff;font-size:14px;font-weight:600;letter-spacing:.04em;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#B9C6D8;font-size:14px}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact li{font-size:14px;color:#B9C6D8;margin-bottom:10px}
.footer-contact span{display:block;font-size:12px;color:#8595AB;margin-bottom:2px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:#8595AB}
.footer-bottom a{color:#8595AB}
.footer-bottom a:hover{color:#fff}
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;background:var(--surface);border:1px solid var(--line-strong);
  box-shadow:var(--sh-2);display:flex;align-items:center;justify-content:center;z-index:80;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top svg{width:18px;height:18px;stroke:var(--brand-700);fill:none;stroke-width:2}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .search{width:240px}
}
@media (max-width:1023px){
  .nav-note{display:none}
  .search{display:none}
  .search-toggle{display:flex}
  .burger{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:36px;min-height:auto;padding-top:48px}
  .hero-media{order:2}
  .hero-badge{right:12px;bottom:-16px}
  .claims-grid{grid-template-columns:1fr;gap:28px}
  .claim{padding:0;border-right:0;border-bottom:1px solid var(--line);padding-bottom:24px}
  .claim:last-child{border-bottom:0;padding-bottom:0}
  .story-grid{grid-template-columns:1fr;gap:32px}
  .story-media{order:1}
  .featured-grid{grid-template-columns:repeat(2,1fr)}
  .featured-grid .card--lead{grid-column:span 2}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .trust-bar .container{grid-template-columns:repeat(2,1fr);gap:24px 0}
  .trust-item{border-right:0;padding:0}
  .trust-item:nth-child(odd){padding-right:20px}
  .logo-wall{grid-template-columns:repeat(4,1fr)}
  .faq-layout{grid-template-columns:1fr;gap:24px}
  .faq-aside{position:static}
  .cta-panel{grid-template-columns:1fr;gap:24px}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  h1{font-size:clamp(26px,7vw,34px)}
  .hero-lead{font-size:16.5px}
  .hero-stats{flex-direction:column;gap:18px}
  .hero-stats .stat{border-right:0;margin:0;padding:0}
  .featured-grid{grid-template-columns:1fr}
  .featured-grid .card--lead{grid-column:span 1}
  .process-grid{grid-template-columns:1fr}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .faq-item summary{padding:16px 16px 16px 18px;font-size:15.5px}
  .faq-answer{padding:0 16px 18px 18px}
  .subscribe-form .btn{width:100%;height:48px}
  .footer-main{grid-template-columns:1fr;gap:28px;padding:40px 0 28px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:479px){
  body{font-size:15.5px}
  .hero-badge{position:static;width:100%;margin-top:14px}
  .hero-media .frame{aspect-ratio:16/11}
  .trust-bar .container{grid-template-columns:1fr;gap:20px}
  .trust-item:nth-child(odd){padding-right:0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --brand-900:#0B2E6F;--brand-700:#12439F;--brand-600:#1A5CD6;--brand-300:#7FA8F0;--brand-100:#E8F0FE;--brand-50:#F4F8FE;
  --accent-strong:#D9480F;--accent:#F26A21;--accent-100:#FFEDE3;
  --ink:#16202E;--ink-2:#5A6B80;--ink-3:#8A97A8;
  --bg:#F6F8FC;--surface:#FFFFFF;--surface-2:#F1F5FB;--line:#E6ECF5;--line-strong:#D7E1EF;--footer-bg:#0F1B2D;
  --ok:#16A34A;--warn:#E5A100;--danger:#D93A3A;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow","Inter",var(--font-cn);
  --container:1200px;--container-read:760px;
  --r-card:14px;--r-media:10px;--r-btn:10px;--r-pill:999px;--r-input:10px;--r-badge:6px;
  --sh-1:0 1px 2px rgba(16,38,73,.06);
  --sh-2:0 8px 24px -12px rgba(16,38,73,.18);
  --sh-3:0 16px 40px -16px rgba(26,92,214,.28);
  --sh-focus:0 0 0 3px rgba(26,92,214,.16);
  --nav-h1:64px;--nav-h2:56px;
  --gutter:24px;
  --section-y:clamp(48px,7vw,96px);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h2) + 16px)}
body{
  margin:0;background:var(--surface);color:var(--ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.85;
  font-variant-numeric:tabular-nums;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease)}
a:hover{color:var(--brand-600)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn-primary{background:var(--accent-strong);color:#fff;box-shadow:0 6px 16px -10px rgba(217,72,15,.7)}
.btn-primary:hover{background:#C94512;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:transparent;color:var(--brand-600);border:1.5px solid var(--brand-600)}
.btn-secondary:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-ghost{color:var(--brand-600);padding:0 4px;height:auto;position:relative}
.btn-ghost::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:linear-gradient(90deg,var(--brand-600),var(--accent));transition:width .24s var(--ease)}
.btn-ghost:hover::after{width:100%}
.btn-mini{height:34px;padding:0 16px;font-size:13px;border-radius:8px}
.btn-icon{width:38px;padding:0;height:38px;border:1px solid var(--line-strong);color:var(--ink-2);background:var(--surface);border-radius:9px;font-size:13px}
.btn-icon:hover{border-color:var(--brand-300);color:var(--brand-600);background:var(--brand-50)}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 顶部导航 ---------- */
.site-header{position:relative;background:var(--surface);z-index:60}
.nav-top{border-bottom:1px solid var(--line);height:var(--nav-h1)}
.nav-top .container{height:100%;display:flex;align-items:center;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:600;color:var(--ink);letter-spacing:-.01em}
.logo:hover{color:var(--ink)}
.logo b{font-weight:700;color:var(--brand-700)}
.logo .latin{font-family:var(--font-num);font-weight:600;text-transform:lowercase;color:var(--brand-600);letter-spacing:0}
.logo-mark{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand-600),var(--brand-900));position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;inset:6px 5px;border:2px solid rgba(255,255,255,.92);border-radius:50% 50% 40% 40%/60% 60% 40% 40%;border-top-color:var(--accent);border-left-color:transparent;transform:rotate(-16deg)}
.nav-note{font-size:13px;color:var(--ink-3);flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search{position:relative;width:290px}
.search input{width:100%;height:40px;border-radius:var(--r-pill);border:1px solid transparent;background:var(--surface-2);
  padding:0 42px 0 18px;font-size:14px;color:var(--ink);transition:border-color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease)}
.search input::placeholder{color:var(--ink-3)}
.search input:focus{outline:none;background:var(--surface);border-color:var(--brand-600);box-shadow:var(--sh-focus)}
.search svg{position:absolute;right:16px;top:50%;transform:translateY(-50%);width:17px;height:17px;fill:none;stroke:var(--ink-3);stroke-width:1.9;stroke-linecap:round}
.search-toggle{display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;color:var(--ink-2)}
.search-toggle svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round}
.burger{display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center}
.burger span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s var(--ease)}
.burger span::before{top:-6px}
.burger span::after{top:6px}

.channels{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:saturate(150%) blur(6px);border-bottom:1px solid var(--line);z-index:55;transition:box-shadow .2s var(--ease)}
.channels.is-stuck{box-shadow:var(--sh-1)}
.channels-inner{display:flex;align-items:center;gap:8px;height:var(--nav-h2);overflow-x:auto;scrollbar-width:none;
  scroll-snap-type:x proximity;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 26px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 26px),transparent 100%)}
.channels-inner::-webkit-scrollbar{display:none}
.pill{flex:0 0 auto;scroll-snap-align:start;display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--brand-700);background:transparent;transition:background-color .2s var(--ease),color .2s var(--ease)}
.pill:hover{background:var(--brand-100);color:var(--brand-700)}
.pill.is-active{background:var(--brand-600);color:#fff}
.pill.is-active:hover{background:var(--brand-700);color:#fff}
.channels-hint{flex:0 0 auto;margin-left:auto;padding-left:16px;font-size:13px;color:var(--ink-3)}

/* ---------- 移动搜索面板 ---------- */
.search-panel{position:fixed;inset:0;background:var(--surface);z-index:120;padding:18px var(--gutter) 28px;
  transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease)}
.search-panel.is-open{opacity:1;transform:none;pointer-events:auto}
.search-panel .panel-top{display:flex;align-items:center;gap:12px}
.search-panel input{flex:1;height:46px;border-radius:var(--r-pill);border:1px solid var(--line-strong);background:var(--surface-2);padding:0 18px;font-size:15px}
.search-panel input:focus{outline:none;border-color:var(--brand-600);background:#fff;box-shadow:var(--sh-focus)}
.search-panel .panel-close{width:44px;height:44px;border-radius:12px;background:var(--surface-2);font-size:18px;color:var(--ink-2)}
.hot-words{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
.hot-words span{width:100%;font-size:13px;color:var(--ink-3);margin-bottom:4px}
.hot-words a{padding:8px 14px;border-radius:var(--r-pill);background:var(--surface-2);font-size:13px;color:var(--ink-2)}
.hot-words a:hover{background:var(--brand-100);color:var(--brand-700)}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:130;pointer-events:none}
.drawer-mask{position:absolute;inset:0;background:rgba(15,27,45,.42);opacity:0;transition:opacity .22s var(--ease)}
.drawer-body{position:absolute;right:0;top:0;bottom:0;width:min(340px,86vw);background:var(--surface);padding:20px 20px 96px;
  transform:translateY(18px);opacity:0;overflow-y:auto;transition:opacity .22s var(--ease),transform .22s var(--ease)}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer-mask{opacity:1}
.drawer.is-open .drawer-body{transform:none;opacity:1}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:40px;height:40px;border-radius:10px;background:var(--surface-2);font-size:17px;color:var(--ink-2)}
.drawer h4{font-size:12px;letter-spacing:.14em;color:var(--ink-3);font-weight:600;margin:18px 0 10px}
.drawer-list a{display:flex;align-items:center;justify-content:space-between;padding:13px 12px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink)}
.drawer-list a:hover{background:var(--brand-50);color:var(--brand-700)}
.drawer-list a::after{content:"";width:7px;height:7px;border-right:1.6px solid var(--ink-3);border-bottom:1.6px solid var(--ink-3);transform:rotate(-45deg)}
.drawer-foot{position:fixed;bottom:0;right:0;width:min(340px,86vw);padding:14px 20px 20px;background:linear-gradient(180deg,rgba(255,255,255,0),#fff 34%)}
.drawer-foot .btn{width:100%}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);padding:22px 0 18px}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--brand-600)}
.crumbs .sep{color:var(--line-strong)}
.crumbs .now{color:var(--ink-2);max-width:20ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-head{border-bottom:1px solid var(--line);padding-bottom:28px}
.channel-badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);
  background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600}
.article-head h1{font-size:clamp(26px,3vw,40px);line-height:1.24;margin:14px 0 0;max-width:22ch}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--ink-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.article-meta time{font-family:var(--font-num)}
.lede{margin-top:20px;padding:14px 18px;border-left:3px solid var(--brand-300);background:var(--brand-50);border-radius:0 8px 8px 0;
  font-size:clamp(16px,1.5vw,18px);line-height:1.75;color:var(--ink-2);max-width:var(--container-read)}

/* ---------- 文章布局 ---------- */
.article-wrap{padding-bottom:var(--section-y)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;padding-top:34px}
.article-body{max-width:var(--container-read);margin:0 auto;font-size:17px;line-height:1.9;color:var(--ink)}
.article-body>*+*{margin-top:1.05em}
.article-body p{margin:0 0 1.05em}
.article-body h2{font-size:clamp(21px,2.2vw,26px);color:var(--brand-900);margin:2.2em 0 .8em;padding-left:16px;position:relative;line-height:1.4}
.article-body h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:3px;background:var(--brand-600)}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink);margin:1.8em 0 .6em}
.article-body h4{font-size:17px;font-weight:600;margin:1.5em 0 .5em}
.article-body a{color:var(--brand-700);text-decoration:underline;text-decoration-color:rgba(26,92,214,.35);text-underline-offset:3px}
.article-body a:hover{color:var(--brand-600);text-decoration-color:var(--brand-600)}
.article-body strong{font-weight:700;color:var(--brand-900)}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:4px}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:8px}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.78em;width:6px;height:6px;border-radius:50%;background:var(--brand-600)}
.article-body ol{counter-reset:num;padding-left:2px}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:8px;counter-increment:num}
.article-body ol li::before{content:counter(num,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--font-num);font-weight:600;color:var(--brand-600);font-size:14px;line-height:1.95em}
.article-body blockquote{margin:1.6em 0;padding:16px 20px;border-left:4px solid var(--brand-600);background:var(--brand-50);border-radius:8px;color:var(--ink-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-media);margin:1.6em auto;width:100%;background:var(--surface-2)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.article-body th{background:var(--surface-2);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-body code{font-family:var(--font-num);background:var(--surface-2);padding:2px 6px;border-radius:6px;font-size:.92em}
.body-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ---------- 目录 ---------- */
.toc{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);box-shadow:var(--sh-1);overflow:hidden}
.toc-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;padding:14px 16px;font-size:14px;font-weight:600;color:var(--brand-700)}
.toc-toggle span.arrow{width:8px;height:8px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg);transition:transform .2s var(--ease)}
.toc.is-open .toc-toggle span.arrow{transform:rotate(-135deg)}
.toc-list{display:none;padding:0 12px 14px}
.toc.is-open .toc-list{display:block}
.toc-list a{display:block;padding:8px 10px;border-left:2px solid var(--line);font-size:14px;color:var(--ink-2);line-height:1.6}
.toc-list a:hover{color:var(--brand-600);background:var(--brand-50);border-left-color:var(--brand-300)}
.toc-list a.is-current{color:var(--brand-700);border-left-color:var(--brand-600);font-weight:600}
.toc-title{display:none;font-size:12px;letter-spacing:.14em;color:var(--ink-3);font-weight:600;padding:16px 16px 8px}

/* ---------- 文章尾部 ---------- */
.article-foot{max-width:var(--container-read);margin:48px auto 0;padding-top:28px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .label{font-size:13px;color:var(--ink-3)}
.tag{padding:5px 12px;border-radius:var(--r-pill);background:var(--surface-2);color:var(--ink-2);font-size:13px}
.tag:hover{background:var(--brand-100);color:var(--brand-700)}
.action-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.empty-box{border:1px dashed var(--line-strong);border-radius:12px;padding:48px 24px;text-align:center;color:var(--ink-3);font-size:14px;background:var(--surface-2)}
.empty-box strong{display:block;font-size:17px;color:var(--ink-2);margin-bottom:8px}
.empty-box a{color:var(--brand-600);font-weight:600}

/* ---------- 卡片 ---------- */
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;color:var(--ink);height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(26,92,214,.28);color:var(--ink)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;line-height:1.7;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-top:auto}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-badge);background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600}
.card-meta time{font-family:var(--font-num)}

/* ---------- 栏目区 ---------- */
.section{padding:var(--section-y) 0}
.section.alt{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);color:var(--brand-900)}
.section-head .sub{font-size:13px;color:var(--ink-3);margin-top:8px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand-50);border:1px solid var(--line);border-radius:20px;padding:clamp(26px,3.4vw,44px);
  display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,420px);gap:32px;align-items:center}
.cta-band h2{font-size:clamp(21px,2.2vw,28px);color:var(--brand-900)}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:52ch}
.form-row{display:flex;gap:10px}
.form-row input{flex:1;height:44px;border-radius:var(--r-input);border:1px solid var(--line-strong);background:#FBFCFE;padding:0 16px;font-size:15px}
.form-row input:focus{outline:none;border-color:var(--brand-600);box-shadow:var(--sh-focus);background:#fff}
.form-row .btn{min-width:150px}
.form-note{font-size:12px;color:var(--ink-3);margin-top:10px}
.form-ok{display:none;margin-top:12px;padding:10px 14px;border-radius:8px;background:rgba(22,163,74,.12);color:var(--ok);font-size:13px}
.form-ok.is-show{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:#B9C6D8;padding:64px 0 0;margin-top:0}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:44px}
.site-footer .logo{color:#fff;font-size:19px}
.site-footer .logo b{color:#fff}
.site-footer .logo .latin{color:var(--brand-300)}
.footer-brand p{font-size:13px;line-height:1.8;margin-top:14px;max-width:34ch;color:#93A4BB}
.footer-col h3{font-size:13px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px;font-size:14px}
.footer-col ul li a{color:#B9C6D8}
.footer-col ul li a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;gap:10px;font-size:14px}
.footer-contact li span{color:#7E8FA6;flex:0 0 auto}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0 22px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12px;color:#7E8FA6}
.to-top{position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;background:var(--brand-600);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-3);opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);z-index:90}
.to-top.is-show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--brand-700)}
.to-top svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:40px;align-items:start}
  .article-body{margin:0}
  .toc{position:sticky;top:calc(var(--nav-h2) + 20px)}
  .toc-toggle{pointer-events:none;padding:16px}
  .toc-toggle span.arrow{display:none}
  .toc-title{display:block}
  .toc-list{display:block !important}
  .toc-toggle{padding-bottom:0}
}
@media (max-width:1199px){
  :root{--container:1100px}
}
@media (max-width:1023px){
  :root{--gutter:20px}
  .nav-note{display:none}
  .search{display:none}
  .search-toggle{display:inline-flex}
  .burger{display:inline-flex}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:minmax(0,1fr)}
  .footer-main{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  :root{--gutter:16px}
  .nav-top .container{gap:14px}
  .channels-hint{display:none}
  .article-head h1{max-width:none}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .footer-main{grid-template-columns:minmax(0,1fr);gap:26px}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%;height:48px}
  .form-row input{height:48px}
  .toc{order:-1}
}
@media (max-width:479px){
  :root{--gutter:14px}
  body{font-size:15px}
  .article-body{font-size:16px}
  .logo{font-size:18px}
  .btn-mini{padding:0 12px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
/* ============ 设计令牌 ============ */
:root{
  --brand-900:#0B2E6F;
  --brand-700:#12439F;
  --brand-600:#1A5CD6;
  --brand-300:#7FA8F0;
  --brand-100:#E8F0FE;
  --brand-50:#F4F8FE;
  --accent-strong:#D9480F;
  --accent:#F26A21;
  --accent-100:#FFEDE3;
  --ink:#16202E;
  --ink-2:#5A6B80;
  --ink-3:#8A97A8;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-2:#F1F5FB;
  --line:#E6ECF5;
  --line-strong:#D7E1EF;
  --footer-bg:#0F1B2D;
  --ok:#16A34A;
  --warn:#E5A100;
  --danger:#D93A3A;

  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow","Inter",var(--font-cn);

  --fs-h1:clamp(28px,3.4vw,44px);
  --fs-h2:clamp(22px,2.4vw,32px);
  --fs-h3:20px;
  --fs-lead:17px;
  --fs-body:16px;
  --fs-sm:14px;
  --fs-xs:13px;

  --r-card:14px;
  --r-media:10px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(16,38,73,.06);
  --sh-2:0 8px 24px -12px rgba(16,38,73,.18);
  --sh-3:0 16px 40px -16px rgba(26,92,214,.28);
  --sh-focus:0 0 0 3px rgba(26,92,214,.16);

  --gutter:24px;
  --container:1280px;
  --section-y:clamp(48px,7vw,96px);
  --nav-h1:64px;
  --nav-h2:56px;
  --ease:cubic-bezier(.2,.8,.2,1);
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h1) + var(--nav-h2) + 12px)}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:var(--fs-body);
  line-height:1.85;
  color:var(--ink);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--brand-600)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ============ 容器与排版 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:var(--section-y)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{font-size:var(--fs-h2);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-head .sub{font-size:var(--fs-xs);color:var(--ink-3);margin-top:8px}
.section-head .sec-line{width:44px;height:3px;background:var(--accent);border-radius:2px;margin-bottom:14px}
p{color:var(--ink)}
.lead{font-size:var(--fs-lead);line-height:1.75;color:var(--ink-2)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--accent-strong);color:#fff;box-shadow:0 6px 16px -10px rgba(217,72,15,.9)}
.btn-primary:hover{background:#C94512;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none}
.btn-secondary{background:transparent;color:var(--brand-600);border:1.5px solid var(--brand-600)}
.btn-secondary:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-ghost{color:var(--brand-600);background:transparent;padding:0;height:auto;border-radius:0;position:relative}
.btn-ghost::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1.5px;background:var(--brand-600);transition:width .22s var(--ease)}
.btn-ghost:hover::after{width:100%}
.btn-mini{height:34px;padding:0 16px;font-size:var(--fs-xs);border-radius:8px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none!important}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-block;padding:2px 10px;border-radius:var(--r-badge);
  background:var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:600;line-height:1.7;white-space:nowrap;
}
.badge-accent{background:var(--accent-100);color:var(--accent-strong)}
.badge-soft{background:var(--surface-2);color:var(--ink-2)}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:var(--fs-xs);color:var(--ink-3)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-top{height:var(--nav-h1);display:flex;align-items:center}
.nav-top .container{display:flex;align-items:center;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.logo:hover{color:var(--ink)}
.logo .latin{font-family:var(--font-num);font-weight:600;font-size:.92em;color:var(--brand-600);margin:0 1px}
.logo b{font-weight:700;color:var(--brand-700)}
.logo-mark{
  width:26px;height:26px;flex:none;border-radius:8px;
  background:
    radial-gradient(120% 120% at 20% 10%,var(--brand-300) 0%,var(--brand-600) 62%,var(--brand-900) 100%);
  position:relative;overflow:hidden;
}
.logo-mark::after{
  content:"";position:absolute;left:-6px;bottom:5px;width:34px;height:14px;
  border:2px solid rgba(255,255,255,.9);border-radius:50% 50% 0 0/100% 100% 0 0;border-bottom:0;
}
.nav-note{font-size:var(--fs-xs);color:var(--ink-3);margin-right:auto;letter-spacing:.01em}
.nav-actions{display:flex;align-items:center;gap:12px}
.search{position:relative;display:flex;align-items:center}
.search input{
  width:280px;height:40px;border-radius:var(--r-pill);
  border:1px solid transparent;background:var(--surface-2);
  padding:0 40px 0 18px;font-size:var(--fs-sm);color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.search input::placeholder{color:var(--ink-3)}
.search input:focus{outline:none;background:#fff;border-color:var(--brand-600);box-shadow:var(--sh-focus)}
.search svg{position:absolute;right:14px;width:18px;height:18px;fill:none;stroke:var(--ink-3);stroke-width:1.8;stroke-linecap:round;pointer-events:none}
.search-toggle{
  display:none;width:40px;height:40px;border-radius:50%;background:var(--surface-2);
  align-items:center;justify-content:center;
}
.search-toggle svg{width:18px;height:18px;fill:none;stroke:var(--brand-700);stroke-width:1.8;stroke-linecap:round}
.burger{
  display:none;width:44px;height:44px;border-radius:10px;background:var(--surface-2);
  align-items:center;justify-content:center;
}
.burger span{position:relative;width:18px;height:2px;background:var(--brand-700);border-radius:2px;display:block}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-700);border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* 频道 Tabs */
.channels{height:var(--nav-h2);border-top:1px solid var(--line);background:#fff}
.channels-inner{
  height:100%;display:flex;align-items:center;gap:8px;
  overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 24px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 24px),transparent 100%);
}
.channels-inner::-webkit-scrollbar{display:none}
.pill{
  flex:none;scroll-snap-align:start;
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:var(--r-pill);font-size:var(--fs-sm);font-weight:600;color:var(--brand-700);
  background:transparent;transition:background-color .2s var(--ease),color .2s var(--ease);
}
.pill:hover{background:var(--brand-100);color:var(--brand-700)}
.pill.is-active{background:var(--brand-600);color:#fff}
.pill.is-active:hover{background:var(--brand-700);color:#fff}
.channels-hint{margin-left:auto;padding-left:16px;font-size:12px;color:var(--ink-3);white-space:nowrap}

/* ============ 移动抽屉 / 搜索面板 ============ */
.drawer{
  position:fixed;inset:0;z-index:90;display:none;
  background:rgba(15,27,45,.45);
}
.drawer.is-open{display:block;animation:fadeIn .18s var(--ease)}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(88vw,360px);height:100%;
  background:#fff;padding:22px 20px 96px;overflow-y:auto;
  transform:translateY(-8px);animation:slideIn .18s var(--ease) forwards;
  box-shadow:var(--sh-2);
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideIn{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}
.drawer-panel h3{font-size:var(--fs-xs);color:var(--ink-3);font-weight:600;margin:18px 0 10px;letter-spacing:.08em}
.drawer-panel a{display:block;padding:12px 12px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink)}
.drawer-panel a:hover,.drawer-panel a.is-active{background:var(--brand-50);color:var(--brand-700)}
.drawer-close{position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;background:var(--surface-2);font-size:18px;line-height:1;color:var(--ink-2)}
.drawer-cta{position:absolute;left:20px;right:20px;bottom:22px}
.drawer-cta .btn{width:100%;height:48px}

.search-panel{
  position:fixed;inset:0;z-index:95;display:none;background:#fff;padding:18px var(--gutter) 40px;
}
.search-panel.is-open{display:block;animation:fadeIn .18s var(--ease)}
.search-panel form{display:flex;gap:10px;align-items:center;border-bottom:1px solid var(--line-strong);padding-bottom:12px}
.search-panel input{flex:1;height:44px;border:0;background:transparent;font-size:17px}
.search-panel input:focus{outline:none}
.search-panel .close-search{width:44px;height:44px;border-radius:50%;background:var(--surface-2);color:var(--ink-2);font-size:18px}
.hot-words{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hot-words span{width:100%;font-size:12px;color:var(--ink-3);letter-spacing:.08em}
.hot-words a{padding:8px 14px;border-radius:var(--r-pill);background:var(--surface-2);font-size:var(--fs-xs);color:var(--ink-2)}
.hot-words a:hover{background:var(--brand-100);color:var(--brand-700)}

/* ============ 面包屑 ============ */
.crumb{padding-top:24px;font-size:var(--fs-xs);color:var(--ink-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li::after{content:"/";margin-left:8px;color:var(--line-strong)}
.crumb li:last-child::after{content:"";margin:0}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand-600)}
.crumb [aria-current]{color:var(--ink-2);font-weight:600}

/* ============ 频道 Hero ============ */
.channel-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  padding:clamp(36px,5vw,64px) 0 clamp(32px,4vw,56px);
}
.channel-hero::before{
  content:"";position:absolute;top:-120px;right:8%;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(26,92,214,.10) 0%,rgba(26,92,214,0) 70%);
  pointer-events:none;
}
.channel-hero .container{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:44px;align-items:center}
.channel-hero h1{font-size:var(--fs-h1);line-height:1.22;font-weight:700;letter-spacing:-.01em}
.channel-hero h1 em{font-style:normal;color:var(--brand-600)}
.channel-hero .hero-lead{margin-top:16px;max-width:38ch;font-size:var(--fs-lead);line-height:1.75;color:var(--ink-2)}
.hero-stats{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:28px}
.hero-stats li{padding:0 20px;border-left:1px solid var(--line-strong)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.hero-stats b{display:block;font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--brand-700);line-height:1.2}
.hero-stats span{font-size:12px;color:var(--ink-3)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-media{position:relative;border-radius:16px;overflow:hidden;background:var(--surface-2);box-shadow:var(--sh-2)}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(255,255,255,.18)}
.hero-tagcard{
  position:absolute;right:16px;bottom:16px;z-index:2;width:200px;
  background:#fff;border-radius:12px;box-shadow:var(--sh-2);padding:12px 14px;
}
.hero-tagcard b{display:block;font-size:var(--fs-xs);color:var(--brand-700)}
.hero-tagcard p{font-size:12px;line-height:1.6;color:var(--ink-3);margin-top:4px}

/* ============ 锚点子导航 ============ */
.anchor-bar{border-bottom:1px solid var(--line);background:#fff}
.anchor-bar .container{display:flex;align-items:center;gap:10px;height:60px;overflow-x:auto;scrollbar-width:none}
.anchor-bar .container::-webkit-scrollbar{display:none}
.anchor-bar .label{font-size:var(--fs-xs);color:var(--ink-3);white-space:nowrap;margin-right:4px}
.anchor-chip{
  flex:none;padding:7px 16px;border-radius:var(--r-pill);
  font-size:var(--fs-xs);font-weight:600;color:var(--ink-2);
  border:1px solid var(--line-strong);background:#fff;
}
.anchor-chip:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-50)}

/* ============ Zigzag 图文长条 ============ */
.zigzag{padding-top:clamp(40px,5vw,72px)}
.zigzag-row{
  display:grid;grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;align-items:center;
  padding-block:clamp(32px,4vw,48px);
  border-top:1px solid var(--line);
}
.zigzag-row:first-of-type{border-top:0;padding-top:0}
.zigzag-row .z-media{grid-column:1 / span 5}
.zigzag-row .z-body{grid-column:6 / span 6}
.zigzag-row.is-rev .z-media{grid-column:8 / span 5}
.zigzag-row.is-rev .z-body{grid-column:1 / span 6}
.z-media{border-radius:16px;overflow:hidden;background:var(--surface-2);box-shadow:var(--sh-1)}
.z-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s var(--ease)}
.zigzag-row:hover .z-media img{transform:scale(1.03)}
.z-index{font-family:var(--font-num);font-size:var(--fs-xs);font-weight:700;color:var(--accent);letter-spacing:.14em}
.z-body h2{font-size:var(--fs-h2);line-height:1.35;font-weight:700;margin-top:10px}
.z-body > p{margin-top:14px;font-size:var(--fs-body);line-height:1.85;color:var(--ink-2);max-width:38em}
.z-list{margin-top:20px;display:grid;gap:10px}
.z-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.7;color:var(--ink)}
.z-list li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;background:var(--brand-600)}
.z-body .btn-ghost{margin-top:22px;font-size:14px}
.z-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

/* ============ 数据带 ============ */
.data-strip{background:var(--surface-2);border-block:1px solid var(--line)}
.data-strip .container{display:grid;grid-template-columns:repeat(3,1fr);padding-block:32px}
.data-strip li{padding-inline:24px;border-left:1px solid var(--line-strong)}
.data-strip li:first-child{border-left:0;padding-left:0}
.data-strip b{display:block;font-family:var(--font-num);font-size:clamp(28px,3vw,38px);font-weight:700;color:var(--brand-700);line-height:1.15}
.data-strip span{font-size:var(--fs-xs);color:var(--ink-3)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.6fr);gap:48px;align-items:start}
.faq-wrap .faq-intro h2{font-size:var(--fs-h2);line-height:1.3;font-weight:700}
.faq-wrap .faq-intro p{margin-top:14px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.faq-list{display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item[open]{border-color:rgba(26,92,214,.28);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 54px 18px 20px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);
  transform:translateY(-70%) rotate(45deg);transition:transform .18s var(--ease);
}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item[open] summary::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--brand-600);border-radius:0 3px 3px 0}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-item .faq-body{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ============ 卡片 ============ */
.card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(26,92,214,.28)}
.card-img{overflow:hidden;background:var(--surface-2)}
.card-img img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .card-img img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;font-weight:600;line-height:1.45;color:var(--ink)}
.card:hover .card-body h3{color:var(--brand-700)}
.card-body p{font-size:var(--fs-sm);line-height:1.75;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body .meta{margin-top:auto}
.card-link{position:absolute;inset:0}
.card{position:relative}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}

/* ============ CTA 条 ============ */
.cta-band{background:var(--brand-50);border-block:1px solid var(--line)}
.cta-inner{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);
  gap:36px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:clamp(24px,3.4vw,40px);
  box-shadow:var(--sh-1);
}
.cta-inner h2{font-size:var(--fs-h2);line-height:1.35;font-weight:700}
.cta-inner p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.field{flex:1 1 220px;display:flex;flex-direction:column;gap:6px}
.field label{font-size:var(--fs-xs);color:var(--ink-2);font-weight:600}
.field input{
  height:44px;border-radius:var(--r-input);border:1px solid var(--line-strong);
  background:#FBFCFE;padding:0 14px;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field input:focus{outline:none;background:#fff;border-color:var(--brand-600);box-shadow:var(--sh-focus)}
.field input[aria-invalid="true"]{border-color:var(--danger)}
.field .err{font-size:12px;color:var(--danger);display:none}
.field.is-error .err{display:block}
.cta-form .btn{flex:0 0 150px;height:44px;align-self:flex-end}
.form-note{width:100%;font-size:12px;color:var(--ink-3);margin-top:2px}
.form-ok{
  display:none;width:100%;padding:10px 14px;border-radius:10px;
  background:rgba(22,163,74,.12);color:#116B33;font-size:var(--fs-xs);font-weight:600;
}
.form-ok.is-show{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);color:#B9C6D8;margin-top:0}
.footer-main{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:32px;padding-block:56px 40px;
}
.footer-brand .logo{color:#fff;font-size:18px}
.footer-brand .logo:hover{color:#fff}
.footer-brand .logo b{color:#fff}
.footer-brand .logo .latin{color:var(--brand-300)}
.footer-brand .logo-mark{background:radial-gradient(120% 120% at 20% 10%,#3E7BE8 0%,var(--brand-600) 62%,#0B2E6F 100%)}
.footer-brand p{margin-top:14px;font-size:var(--fs-xs);line-height:1.8;color:#8FA3BD;max-width:34em}
.footer-col h3{font-size:var(--fs-sm);font-weight:600;color:#fff;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:var(--fs-sm);color:#B9C6D8}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-contact li{display:flex;gap:10px;font-size:var(--fs-sm);color:#B9C6D8}
.footer-contact span{color:#8095B0;flex:none}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.10);
  padding-block:20px 28px;font-size:var(--fs-xs);color:#7E90A8;
}

/* 返回顶部 */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--line-strong);box-shadow:var(--sh-2);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease),transform .22s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-2px)}
.to-top svg{width:18px;height:18px;fill:none;stroke:var(--brand-700);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  :root{--container:1280px}
}
@media (max-width:1439px){
  :root{--container:1200px}
}
@media (max-width:1199px){
  :root{--container:1160px}
  .channel-hero .container{grid-template-columns:1fr;gap:32px}
  .channel-hero .hero-lead{max-width:none}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:1023px){
  :root{--gutter:20px}
  .nav-note{display:none}
  .search input{width:200px}
  .zigzag-row{grid-template-columns:1fr;gap:20px}
  .zigzag-row .z-media,
  .zigzag-row .z-body,
  .zigzag-row.is-rev .z-media,
  .zigzag-row.is-rev .z-body{grid-column:1 / -1}
  .zigzag-row.is-rev .z-media{order:-1}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  :root{--gutter:16px;--nav-h1:56px;--nav-h2:48px;--fs-body:15.5px}
  .search{display:none}
  .search-toggle{display:inline-flex}
  .burger{display:inline-flex}
  .nav-actions .btn-primary{display:none}
  .channels-hint{display:none}
  .hero-stats{flex-direction:column;align-items:flex-start;gap:14px}
  .hero-stats li{padding:0;border-left:0}
  .hero-stats b{display:inline;font-size:20px;margin-right:8px}
  .data-strip .container{grid-template-columns:1fr;gap:20px;padding-block:26px}
  .data-strip li{padding:0;border-left:0;border-top:1px solid var(--line-strong);padding-top:16px}
  .data-strip li:first-child{border-top:0;padding-top:0}
  .card-grid{grid-template-columns:1fr}
  .anchor-bar .container{height:54px}
  .footer-main{grid-template-columns:1fr;gap:26px;padding-block:40px 28px}
  .cta-form{flex-direction:column}
  .cta-form .btn{flex:1 1 auto;width:100%;height:48px;align-self:stretch}
  .field input{width:100%}
  .to-top{right:14px;bottom:14px;width:42px;height:42px}
}
@media (max-width:479px){
  :root{--gutter:14px}
  .logo{font-size:17px}
  .channel-hero h1{font-size:26px}
  .section-head h2{font-size:22px}
  .card-body{padding:16px}
  .faq-item summary{padding:16px 48px 16px 16px;font-size:15px}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2E6F;--brand-700:#12439F;--brand-600:#1A5CD6;--brand-300:#7FA8F0;--brand-100:#E8F0FE;--brand-50:#F4F8FE;
  --accent-strong:#D9480F;--accent:#F26A21;--accent-100:#FFEDE3;
  --ink:#16202E;--ink-2:#5A6B80;--ink-3:#8A97A8;
  --bg:#F6F8FC;--surface:#FFFFFF;--surface-2:#F1F5FB;--line:#E6ECF5;--line-strong:#D7E1EF;--footer-bg:#0F1B2D;
  --ok:#16A34A;--warn:#E5A100;--danger:#D93A3A;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow","Inter",var(--font-cn);
  --container:1200px;--container-narrow:1080px;--container-read:760px;
  --gutter:24px;--section-y:clamp(48px,7vw,96px);
  --r-card:14px;--r-media:10px;--r-btn:10px;--r-pill:999px;--r-input:10px;--r-badge:6px;
  --sh-1:0 1px 2px rgba(16,38,73,.06);
  --sh-2:0 8px 24px -12px rgba(16,38,73,.18);
  --sh-3:0 16px 40px -16px rgba(26,92,214,.28);
  --sh-focus:0 0 0 3px rgba(26,92,214,.16);
  --nav-h1:64px;--nav-h2:56px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h1) + var(--nav-h2) + 16px)}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-700);text-decoration:none;transition:color 200ms var(--ease),background-color 200ms var(--ease)}
a:hover{color:var(--brand-600)}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--brand-600);color:#fff;padding:10px 16px;border-radius:0 0 var(--r-btn) 0}
.skip-link:focus{left:0;color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--section-y) 0}
.section-tight{padding:clamp(32px,4.5vw,60px) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:clamp(24px,3vw,40px)}
.section-head h2{font-size:clamp(24px,2.6vw,36px)}
.section-head .sub{margin-top:10px;font-size:14px;color:var(--ink-3)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--brand-700);font-weight:600;letter-spacing:.02em;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent)}
.lead{font-size:clamp(16px,1.35vw,18px);line-height:1.75;color:var(--ink-2)}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-700);background-image:linear-gradient(var(--brand-600),var(--brand-600));background-repeat:no-repeat;background-size:0% 1px;background-position:0 100%;padding-bottom:2px;transition:background-size 240ms var(--ease),color 200ms var(--ease)}
.text-link:hover{color:var(--brand-600);background-size:100% 1px}
.text-link svg{width:16px;height:16px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform 200ms var(--ease)}
.text-link:hover svg{transform:translateX(3px)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;text-align:center;white-space:nowrap;transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease)}
.btn svg{width:18px;height:18px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--accent-strong);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#C94512;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-600)}
.btn-secondary:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-ghost{background:transparent;color:var(--brand-700);padding:0 4px;height:40px}
.btn-ghost:hover{color:var(--brand-600)}
.btn-mini{height:34px;padding:0 14px;font-size:13px;border-radius:8px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:var(--r-badge);font-size:12px;font-weight:600;background:var(--brand-100);color:var(--brand-700);line-height:1.7}
.badge-accent{background:var(--accent-100);color:var(--accent-strong)}
.badge-ok{background:rgba(22,163,74,.12);color:var(--ok)}
.badge-warn{background:rgba(229,161,0,.14);color:#8A6200}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-3)}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line-strong)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line)}
.nav-top{height:var(--nav-h1);display:flex;align-items:center}
.nav-top .container{display:flex;align-items:center;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.logo:hover{color:var(--brand-700)}
.logo .latin{font-weight:600;color:var(--brand-600);margin:0 1px}
.logo b{font-weight:700}
.logo-mark{width:26px;height:26px;border-radius:8px;background:linear-gradient(140deg,var(--brand-600),var(--brand-700));position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;inset:7px 5px;border:2px solid #fff;border-radius:60% 40% 60% 40%;border-bottom-color:transparent;transform:rotate(-18deg)}
.nav-note{font-size:13px;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{position:relative;width:280px}
.search input{width:100%;height:40px;padding:0 40px 0 16px;border-radius:var(--r-pill);border:1px solid transparent;background:var(--surface-2);font-size:14px;color:var(--ink);transition:border-color 200ms var(--ease),background-color 200ms var(--ease),box-shadow 200ms var(--ease)}
.search input::placeholder{color:var(--ink-3)}
.search input:focus{outline:none;background:var(--surface);border-color:var(--brand-600);box-shadow:var(--sh-focus)}
.search svg{position:absolute;right:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;stroke:var(--ink-3);stroke-width:2;fill:none;stroke-linecap:round}
.search-toggle{display:none;width:40px;height:40px;border-radius:50%;align-items:center;justify-content:center;background:var(--surface-2)}
.search-toggle svg{width:19px;height:19px;stroke:var(--ink);stroke-width:2;fill:none;stroke-linecap:round}
.burger{display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;background:var(--surface-2)}
.burger span,.burger span::before,.burger span::after{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative;transition:transform 200ms var(--ease),opacity 200ms var(--ease)}
.burger span::before,.burger span::after{content:"";position:absolute;left:0}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger.is-open span{background:transparent}
.burger.is-open span::before{transform:translateY(6px) rotate(45deg)}
.burger.is-open span::after{transform:translateY(-6px) rotate(-45deg)}
.channels{position:relative;border-top:1px solid var(--line);background:var(--surface);box-shadow:var(--sh-1)}
.channels-inner{display:flex;align-items:center;gap:8px;height:var(--nav-h2);overflow-x:auto;scrollbar-width:none;scroll-snap-type:x proximity;mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%)}
.channels-inner::-webkit-scrollbar{display:none}
.pill{flex:0 0 auto;scroll-snap-align:start;display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--r-pill);font-size:14px;font-weight:600;color:var(--brand-700);background:transparent;transition:background-color 200ms var(--ease),color 200ms var(--ease)}
.pill:hover{background:var(--brand-100);color:var(--brand-700)}
.pill.is-active{background:var(--brand-600);color:#fff}
.channels-hint{margin-left:auto;flex:0 0 auto;font-size:13px;color:var(--ink-3);padding-left:16px}
.drawer{display:none;position:fixed;inset:var(--nav-h1) 0 0;z-index:55;background:var(--surface);padding:20px var(--gutter) 96px;overflow-y:auto;transform:translateY(8px);opacity:0;pointer-events:none;transition:opacity 180ms var(--ease),transform 180ms var(--ease)}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
.drawer h3{font-size:13px;color:var(--ink-3);font-weight:600;margin:18px 0 10px;letter-spacing:.04em}
.drawer ul li a{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-bottom:1px solid var(--line);font-size:16px;font-weight:600;color:var(--ink)}
.drawer ul li a:hover{color:var(--brand-600)}
.drawer-cta{position:fixed;left:var(--gutter);right:var(--gutter);bottom:16px}

/* 面包屑 */
.crumbs{padding:18px 0 0;font-size:13px;color:var(--ink-3)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--line-strong)}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--brand-600)}
.crumbs [aria-current]{color:var(--ink);font-weight:600}

/* 频道 Hero */
.channel-hero{position:relative;padding:clamp(28px,4vw,52px) 0 clamp(32px,4.5vw,56px)}
.channel-hero::before{content:"";position:absolute;inset:0 0 auto;height:100%;background:
  linear-gradient(180deg,var(--surface) 0%,var(--bg) 100%)}
.channel-hero > .container{position:relative}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(24px,4vw,56px);align-items:center}
.hero-copy h1{font-size:clamp(28px,3.4vw,46px);line-height:1.22;letter-spacing:-.01em}
.hero-copy .hero-lead{margin-top:16px;max-width:36em;font-size:clamp(16px,1.4vw,18px);line-height:1.72;color:var(--ink-2)}
.hero-stats{margin-top:28px;display:flex;flex-wrap:wrap;gap:0}
.hero-stats .item{padding:0 22px;border-left:1px solid var(--line-strong)}
.hero-stats .item:first-child{padding-left:0;border-left:0}
.hero-stats .num{display:block;font-size:clamp(22px,2.4vw,30px);font-weight:700;color:var(--brand-700);line-height:1.2}
.hero-stats .cap{font-size:13px;color:var(--ink-3)}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
.hero-media{position:relative}
.hero-media .frame{position:relative;border-radius:16px;overflow:hidden;background:var(--surface-2);aspect-ratio:16/9;box-shadow:var(--sh-2)}
.hero-media .frame img{width:100%;height:100%;object-fit:cover}
.hero-media .frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.86),rgba(255,255,255,.62))}
.hero-media .tagcard{position:absolute;right:14px;bottom:-16px;width:200px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:12px 14px}
.hero-media .tagcard strong{display:block;font-size:15px;color:var(--brand-700)}
.hero-media .tagcard span{font-size:12px;color:var(--ink-3);line-height:1.6}

/* 锚点子导航 */
.anchor-nav{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.anchor-inner{display:flex;gap:8px;align-items:center;overflow-x:auto;scrollbar-width:none;padding:12px 0}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 16px;border-radius:var(--r-pill);font-size:14px;font-weight:600;color:var(--ink-2);background:var(--surface-2);transition:background-color 200ms var(--ease),color 200ms var(--ease)}
.anchor-inner a:hover{background:var(--brand-100);color:var(--brand-700)}
.anchor-inner a .num{font-size:12px;color:var(--brand-600)}

/* 数据条 */
.databar{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.databar-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0}
.databar .cell{padding:32px 28px;border-left:1px solid var(--line-strong)}
.databar .cell:first-child{border-left:0;padding-left:0}
.databar .num{display:block;font-size:clamp(28px,3.2vw,42px);font-weight:700;color:var(--brand-700);line-height:1.1}
.databar .cap{margin-top:6px;font-size:13px;color:var(--ink-3)}
.databar .desc{margin-top:10px;font-size:14px;color:var(--ink-2);max-width:30em}

/* 横向大卡轨道 */
.track-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}
.track-nav{display:flex;gap:10px}
.track-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--line-strong);background:var(--surface);display:inline-flex;align-items:center;justify-content:center;transition:border-color 200ms var(--ease),background-color 200ms var(--ease),transform 200ms var(--ease)}
.track-btn svg{width:16px;height:16px;stroke:var(--brand-700);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.track-btn:hover{border-color:var(--brand-600);background:var(--brand-100);transform:translateY(-1px)}
.track-mask{position:relative;margin-top:28px}
.track-mask::after{content:"";position:absolute;top:0;right:0;width:72px;height:100%;background:linear-gradient(90deg,rgba(246,248,252,0),var(--bg));pointer-events:none}
.track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding:4px 4px 18px}
.track::-webkit-scrollbar{display:none}
.track-card{flex:0 0 344px;scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease)}
.track-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(26,92,214,.28)}
.track-card .thumb{aspect-ratio:16/10;background:var(--surface-2);overflow:hidden}
.track-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease)}
.track-card:hover .thumb img{transform:scale(1.03)}
.track-card .body{padding:18px 18px 20px}
.track-card h3{font-size:18px;font-weight:600;line-height:1.4}
.track-card p{margin-top:10px;font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.track-card .row{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px}

/* 编号目录 */
.directory{margin-top:8px;border-top:1px solid var(--line)}
.dir-row{display:grid;grid-template-columns:96px minmax(0,1fr) 40px;align-items:center;gap:20px;padding:22px 12px;border-bottom:1px solid var(--line);transition:background-color 200ms var(--ease),padding-left 200ms var(--ease)}
.dir-row:hover{background:var(--brand-50);padding-left:18px}
.dir-row .idx{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(26px,3vw,38px);font-weight:700;color:transparent;-webkit-text-stroke:1.4px rgba(26,92,214,.42);line-height:1}
.dir-row:hover .idx{-webkit-text-stroke-color:var(--brand-600)}
.dir-row h3{font-size:19px;font-weight:600}
.dir-row p{margin-top:6px;font-size:14px;color:var(--ink-2);max-width:62ch}
.dir-row .arrow{justify-self:end;color:var(--ink-3);transition:color 200ms var(--ease),transform 200ms var(--ease)}
.dir-row:hover .arrow{color:var(--brand-600);transform:translateX(3px)}
.dir-row .arrow svg{width:18px;height:18px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* 图文要点 */
.split{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:clamp(24px,4vw,56px);align-items:center}
.split .media{border-radius:16px;overflow:hidden;background:var(--surface-2);aspect-ratio:4/3;box-shadow:var(--sh-1)}
.split .media img{width:100%;height:100%;object-fit:cover}
.checklist{margin-top:18px;display:grid;gap:10px}
.checklist li{position:relative;padding-left:20px;font-size:15px;line-height:1.7;color:var(--ink-2)}
.checklist li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--brand-600)}
.quote{margin:26px 0;padding:18px 22px;border-left:4px solid var(--brand-600);background:var(--brand-50);border-radius:8px;color:var(--ink-2);font-size:15px}
.quote cite{display:block;margin-top:8px;font-style:normal;font-size:13px;color:var(--ink-3)}

/* 相关推荐卡 */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease)}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(26,92,214,.28)}
.card .thumb{aspect-ratio:16/10;background:var(--surface-2);overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease)}
.card:hover .thumb img{transform:scale(1.03)}
.card .body{padding:18px;display:flex;flex-direction:column;gap:12px;flex:1}
.card h3{font-size:18px;font-weight:600;line-height:1.45}
.card h3 a{color:var(--ink)}
.card h3 a:hover{color:var(--brand-600)}
.card p{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .meta{margin-top:auto}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:clamp(24px,4vw,56px)}
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease)}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--sh-1)}
.faq-item summary{position:relative;list-style:none;cursor:pointer;padding:18px 52px 18px 20px;font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);border-left:3px solid transparent;border-radius:12px 12px 0 0;transition:color 200ms var(--ease),border-color 200ms var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";position:absolute;right:22px;top:50%;width:8px;height:8px;border-right:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);transform:translateY(-70%) rotate(45deg);transition:transform 180ms var(--ease)}
.faq-item[open] summary{color:var(--brand-700);border-left-color:var(--brand-600)}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-item .answer{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* CTA */
.cta-band{background:var(--brand-50);border:1px solid var(--line);border-radius:20px;padding:clamp(24px,3.4vw,44px);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:clamp(20px,3vw,44px);align-items:center}
.cta-band h2{font-size:clamp(22px,2.3vw,30px)}
.cta-band .lead{margin-top:12px;font-size:16px}
.form-row{display:flex;gap:12px}
.field{flex:1;display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:var(--ink-2)}
.field input{height:44px;padding:0 14px;border-radius:var(--r-input);border:1px solid var(--line-strong);background:#FBFCFE;font-size:15px;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease)}
.field input::placeholder{color:var(--ink-3)}
.field input:focus{outline:none;border-color:var(--brand-600);background:var(--surface);box-shadow:var(--sh-focus)}
.form-note{margin-top:12px;font-size:12px;color:var(--ink-3)}

/* 页脚 */
.site-footer{background:var(--footer-bg);color:#B9C6D8;margin-top:var(--section-y);padding:clamp(40px,5vw,64px) 0 24px}
.site-footer .logo{color:#fff;font-size:19px}
.site-footer .logo .latin{color:var(--brand-300)}
.footer-main{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));gap:clamp(24px,3vw,48px);padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand p{margin-top:14px;font-size:13px;line-height:1.8;color:#8E9DB3;max-width:32em}
.footer-col h3{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:#B9C6D8;font-size:14px}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-contact li{font-size:14px;display:flex;flex-direction:column;gap:2px}
.footer-contact li span{font-size:12px;color:#8E9DB3}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding-top:20px;font-size:13px;color:#8E9DB3}
.to-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;background:var(--surface);border:1px solid var(--line-strong);box-shadow:var(--sh-2);display:inline-flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transform:translateY(6px);transition:opacity 220ms var(--ease),transform 220ms var(--ease),background-color 200ms var(--ease);z-index:70}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--brand-100)}
.to-top svg{width:18px;height:18px;stroke:var(--brand-700);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}

@media (max-width:1199px){
  :root{--container:1160px}
  .track-card{flex-basis:320px}
  .faq-grid{grid-template-columns:minmax(0,1fr)}
  .cards{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--container:100%;--gutter:20px;--nav-h1:60px;--nav-h2:52px}
  .nav-note{display:none}
  .burger{display:inline-flex}
  .hero-grid{grid-template-columns:minmax(0,1fr)}
  .hero-media{order:-1}
  .hero-media .tagcard{position:static;width:100%;margin-top:12px;box-shadow:var(--sh-1)}
  .split{grid-template-columns:minmax(0,1fr)}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:minmax(0,1fr)}
  .footer-main{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  :root{--gutter:16px}
  .search{display:none}
  .search-toggle{display:inline-flex}
  .databar-grid{grid-template-columns:minmax(0,1fr)}
  .databar .cell{padding:20px 0;border-left:0;border-top:1px solid var(--line-strong)}
  .databar .cell:first-child{border-top:0;padding-top:0}
  .databar .cell:last-child{padding-bottom:0}
  .dir-row{grid-template-columns:64px minmax(0,1fr) 28px;gap:14px;padding:18px 8px}
  .track-card{flex-basis:284px}
  .section-head{flex-direction:column;align-items:flex-start}
  .channels-hint{display:none}
  .hero-stats{flex-direction:column;gap:16px}
  .hero-stats .item{padding:0;border-left:0;border-top:1px solid var(--line);padding-top:14px}
  .hero-stats .item:first-child{border-top:0;padding-top:0}
}
@media (max-width:559px){
  :root{--gutter:14px}
  body{font-size:15px}
  .cards{grid-template-columns:minmax(0,1fr)}
  .footer-main{grid-template-columns:minmax(0,1fr)}
  .form-row{flex-direction:column}
  .btn{padding:0 18px}
  .cta-band .btn{width:100%;height:48px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}