/* roulang page: index */
:root{
  --brand-500:#0FD3A6;
  --brand-600:#0AA98A;
  --brand-100:#D6FBF1;
  --accent:#FF8A3D;
  --accent-600:#E8732A;
  --violet:#7B61FF;
  --ink-900:#0E1116;
  --ink-700:#1A1F27;
  --paper:#F6F7F9;
  --card:#FFFFFF;
  --line:#E7EAEE;
  --txt:#12161C;
  --txt-2:#5A6472;
  --txt-dark:#E9EDF2;
  --txt-dark-2:#9BA6B4;
  --ok:#12B76A;
  --warn:#F04438;
  --info:#3B82F6;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --shadow-1:0 1px 2px rgba(14,17,22,.06),0 8px 24px rgba(14,17,22,.06);
  --shadow-2:0 14px 34px rgba(14,17,22,.12);
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;background:var(--paper);color:var(--txt);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:0;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--brand-500)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--txt);letter-spacing:-.02em}
h1{font-size:40px;line-height:1.2}
h2{font-size:30px;line-height:1.28}
h3{font-size:22px;line-height:1.36;font-weight:600}
h4{font-size:18px;line-height:1.44;font-weight:600}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:20px}
li{margin-bottom:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head p{margin:8px 0 0;color:var(--txt-2);font-size:15px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;line-height:18px;font-weight:600;letter-spacing:.08em;color:var(--brand-600);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--brand-500),var(--accent))}
.grad-line{height:2px;width:100%;background:linear-gradient(90deg,var(--brand-500),var(--accent));border:0;margin:0}
/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;transition:all .2s ease-out;white-space:nowrap}
.btn-primary{background:var(--brand-500);color:#08211B}
.btn-primary:hover{background:var(--brand-600);color:#04140F;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--brand-500);color:var(--brand-600)}
.btn-ghost:hover{background:rgba(15,211,166,.08);color:var(--brand-600);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#3A1B05}
.btn-accent:hover{background:var(--accent-600);color:#2C1403;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-quiet{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.28);color:#E9EDF2}
.btn-quiet:hover{background:rgba(255,255,255,.16);color:#fff}
.btn:focus-visible,.link-arrow:focus-visible,.nav-link:focus-visible,.chip:focus-visible,.faq-item summary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(15,211,166,.45)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-600);border-bottom:2px solid transparent;padding-bottom:2px}
.link-arrow svg{transition:transform .2s ease-out}
.link-arrow:hover{border-bottom-color:var(--brand-500)}
.link-arrow:hover svg{transform:translateX(4px)}
/* 徽章 标签 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:18px;padding:3px 10px;border-radius:999px;font-weight:600}
.badge-brand{background:var(--brand-100);color:#076F5B}
.badge-accent{background:#FFF0E4;color:#A8490F}
.badge-dark{background:rgba(255,255,255,.12);color:#D8E2DE}
.chip{display:inline-flex;align-items:center;min-height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--txt-2);font-size:14px;font-weight:500;transition:all .2s ease-out}
.chip:hover{border-color:rgba(15,211,166,.5);color:var(--brand-600);transform:translateY(-2px)}
.chip.is-on{background:var(--brand-100);border-color:rgba(15,211,166,.5);color:#076F5B;font-weight:600}
/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .2s ease-out,box-shadow .2s ease-out}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 22px rgba(14,17,22,.06)}
.nav-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--brand-500),#0AA98A 60%,var(--violet));color:#062019;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px)}
.brand-text{display:flex;align-items:baseline;gap:4px;font-weight:700;font-size:18px;color:var(--txt);letter-spacing:-.01em}
.brand-text .sub{font-size:12px;font-weight:600;color:var(--txt-2)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:var(--nav-h);padding:0 14px;font-size:15px;font-weight:500;color:var(--txt-2)}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;background:var(--brand-500);transform:scaleX(0);transform-origin:center;transition:transform .2s ease-out}
.nav-link:hover{color:var(--txt)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--txt);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.cmd-search{position:relative;display:flex;align-items:center;width:240px;height:42px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;transition:all .2s ease-out}
.cmd-search:focus-within{width:320px;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(15,211,166,.18)}
.cmd-search svg{flex:0 0 auto;color:var(--txt-2)}
.cmd-search input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:14px;color:var(--txt);padding:0 8px}
.cmd-search input::placeholder{color:#9BA6B4}
.kbd{flex:0 0 auto;font-size:11px;font-weight:600;color:var(--txt-2);background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:2px 6px}
.icon-btn{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;color:var(--txt-2);transition:all .2s ease-out}
.icon-btn:hover{color:var(--brand-600);border-color:rgba(15,211,166,.5);transform:translateY(-2px)}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;color:var(--txt)}
/* Hero */
.hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line)}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(14,17,22,.06) 1px,transparent 1px);background-size:18px 18px;opacity:.7;pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:center;padding:80px 0 64px}
.hero h1{margin:16px 0 18px;font-size:42px;line-height:1.18}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--brand-600),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:18px;line-height:1.7;color:var(--txt-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;padding-top:26px;border-top:1px solid var(--line)}
.stat-num{font-family:Inter,Manrope,-apple-system,sans-serif;font-size:30px;font-weight:800;line-height:1.1;color:var(--txt)}
.stat-num span{font-size:15px;font-weight:700;color:var(--brand-600);margin-left:2px}
.stat-label{font-size:13px;color:var(--txt-2);margin-top:4px}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow-1)}
.hero-visual::after{content:"";position:absolute;inset:0;border-radius:var(--r-img);background:linear-gradient(180deg,rgba(14,17,22,0) 45%,rgba(14,17,22,.42));pointer-events:none}
.float-card{position:absolute;left:-18px;bottom:22px;z-index:2;display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:14px 16px;box-shadow:var(--shadow-2);max-width:280px}
.float-card .dot{width:34px;height:34px;flex:0 0 auto;border-radius:10px;background:var(--brand-100);color:#076F5B;display:flex;align-items:center;justify-content:center}
.float-card strong{display:block;font-size:14px;color:var(--txt)}
.float-card small{color:var(--txt-2);font-size:12px}
.feature-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);background:rgba(246,247,249,.7)}
.feature-strip .cell{padding:20px 24px;border-right:1px solid var(--line);display:flex;align-items:center;gap:10px;font-size:14px;color:var(--txt-2)}
.feature-strip .cell:last-child{border-right:0}
.feature-strip .cell b{color:var(--txt);font-weight:600}
.feature-strip svg{color:var(--brand-600);flex:0 0 auto}
/* 卡片通用 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;transition:all .2s ease-out}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,211,166,.35)}
/* CMS 列表 */
.news-main{display:grid;grid-template-columns:16fr 9fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:all .2s ease-out}
.news-main:hover{box-shadow:var(--shadow-2);border-color:rgba(15,211,166,.35)}
.news-main .cover{position:relative;overflow:hidden}
.news-main .cover img{width:100%;height:100%;min-height:280px;aspect-ratio:16/9;object-fit:cover}
.news-main .body{padding:28px}
.news-main h3{font-size:24px;line-height:1.35;margin:12px 0 12px}
.news-main h3 a{color:var(--txt)}
.news-main h3 a:hover{color:var(--brand-600)}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--txt-2)}
.meta .sep{width:4px;height:4px;border-radius:50%;background:#C6CDD6}
.news-list{margin-top:20px;display:grid;gap:12px}
.news-item{position:relative;display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 22px 18px 26px;transition:all .2s ease-out;border-left:3px solid var(--brand-500)}
.news-item::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;background:var(--brand-500);border-radius:0 3px 3px 0;transition:width .2s ease-out}
.news-item:hover{background:#F3FBF9;transform:translateY(-2px);box-shadow:var(--shadow-1)}
.news-item:hover::before{width:4px}
.news-item h4{margin:6px 0 6px;font-size:17px}
.news-item h4 a{color:var(--txt)}
.news-item h4 a:hover{color:var(--brand-600)}
.news-item p{margin:0;font-size:14px;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item .go{color:var(--brand-600);flex:0 0 auto}
.empty-state{text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-card);background:#fff}
.empty-state .ico{width:52px;height:52px;margin:0 auto 14px;border-radius:14px;background:var(--paper);display:flex;align-items:center;justify-content:center;color:var(--txt-2)}
.empty-state p{color:var(--txt-2);margin:0 0 10px}
/* 合集目录 */
.grid-tiers{display:grid;gap:20px}
.tier-lg{display:grid}
.tier-md{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.tier-sm{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tile{position:relative;display:block;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--line);background:#0E1116;transition:all .2s ease-out}
.tile:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.tile img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.tile:hover img{transform:scale(1.03)}
.tile-lg img{aspect-ratio:2/1}
.tile-md img{aspect-ratio:1/1}
.tile-sm img{aspect-ratio:4/3}
.tile-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,17,22,.05) 30%,rgba(14,17,22,.82));display:flex;flex-direction:column;justify-content:flex-end;padding:24px;color:#fff}
.tile-mask h3{color:#fff;margin:10px 0 8px;font-size:20px}
.tile-lg .tile-mask h3{font-size:26px}
.tile-mask .tmeta{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:#D5DEE6}
.tile-mask .enter{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand-500)}
.tile:hover .enter svg{transform:translateX(4px)}
.tile-mask .enter svg{transition:transform .2s ease-out}
/* 精选条目横滚 */
.rail-wrap{position:relative}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 20px;scrollbar-width:thin}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:#D5DBE2;border-radius:999px}
.rail .card{flex:0 0 30.5%;scroll-snap-align:start;display:flex;flex-direction:column}
.rail h4{margin:12px 0 8px;font-size:18px}
.rail p{font-size:14px;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
.rail .thumb{border-radius:12px;overflow:hidden}
.rail .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rail-nav{display:flex;gap:10px}
.rail-btn{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--txt-2);display:inline-flex;align-items:center;justify-content:center;transition:all .2s ease-out}
.rail-btn:hover{color:var(--brand-600);border-color:rgba(15,211,166,.5);transform:translateY(-2px)}
/* 相关推荐 */
.reco{display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:start}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.reco-list{display:grid;gap:12px}
.reco-item{position:relative;display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 22px;transition:all .2s ease-out}
.reco-item::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:0;background:var(--brand-500);border-radius:0 3px 3px 0;transition:width .2s ease-out}
.reco-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-1)}
.reco-item:hover::before{width:3px}
.reco-num{font-family:Inter,Manrope,sans-serif;font-size:15px;font-weight:800;color:var(--violet)}
.reco-item h4{margin:0 0 4px;font-size:16px}
.reco-item h4 a{color:var(--txt)}
.reco-item h4 a:hover{color:var(--brand-600)}
.reco-item p{margin:0;font-size:13px;color:var(--txt-2)}
/* FAQ */
.faq{display:grid;gap:10px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .2s ease-out}
.faq-item[open]{border-color:rgba(15,211,166,.35)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;font-size:17px;font-weight:600;color:var(--txt);position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary{color:var(--brand-600)}
.faq-item summary::after{content:"";width:12px;height:12px;flex:0 0 auto;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);transition:transform .3s ease-out}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-item .faq-body{padding:0 22px 22px;color:var(--txt-2);font-size:15px;position:relative}
.faq-item[open] .faq-body::before{content:"";position:absolute;left:0;top:2px;bottom:22px;width:4px;background:var(--brand-500);border-radius:0 3px 3px 0}
.faq-item .faq-body p:last-child{margin-bottom:0}
/* 深色 CTA */
.cta-dark{position:relative;background:var(--ink-900);color:var(--txt-dark);overflow:hidden}
.cta-dark::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:16px 16px;pointer-events:none}
.cta-dark::after{content:"";position:absolute;top:-40%;right:-10%;width:520px;height:520px;background:linear-gradient(135deg,rgba(15,211,166,.28),rgba(255,138,61,.28));clip-path:polygon(18% 0,100% 0,100% 82%,82% 100%,0 100%,0 18%);pointer-events:none}
.cta-inner{position:relative;display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:center;padding:72px 0}
.cta-inner h2{color:#fff}
.cta-inner p{color:var(--txt-dark-2);margin:14px 0 0;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.cta-note{grid-column:1/-1;font-size:13px;color:var(--txt-dark-2);margin-top:18px}
/* 页脚 */
.site-footer{background:var(--ink-900);color:var(--txt-dark-2);padding:0}
.footer-cols{display:grid;grid-template-columns:5fr 3fr 3fr 3fr;gap:32px;padding:64px 0 40px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text .sub{color:var(--txt-dark-2)}
.footer-brand p{font-size:14px;margin:16px 0;color:var(--txt-dark-2);max-width:320px}
.footer-brand .brand-mark{width:34px;height:34px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-links li{margin:0}
.footer-links a{color:var(--txt-dark-2);font-size:14px}
.footer-links a:hover{color:var(--brand-500)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8C97A5}
.footer-bottom a{color:#8C97A5}
.footer-bottom a:hover{color:var(--brand-500)}
.footer-acc{display:none}
/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:80;background:rgba(14,17,22,.5);opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(88vw,360px);background:#fff;display:flex;flex-direction:column;transform:translateX(100%);transition:transform .28s ease-out}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 20px;border-bottom:1px solid var(--line)}
.drawer-links{flex:1;overflow-y:auto;padding:8px 0}
.drawer-links a{display:flex;align-items:center;height:52px;padding:0 20px;font-size:16px;color:var(--txt);border-bottom:1px solid #F1F3F6}
.drawer-links a.is-active{color:var(--brand-600);font-weight:600;border-left:3px solid var(--brand-500)}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}
/* 响应式 */
@media (max-width:1439px){
  .hero h1{font-size:38px}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .nav-links{display:none}
  .cmd-search{display:none}
  .nav-toggle{display:inline-flex}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:56px 0 48px}
  .hero h1{font-size:32px}
  .feature-strip{grid-template-columns:repeat(2,1fr)}
  .feature-strip .cell:nth-child(2){border-right:0}
  .feature-strip .cell:nth-child(1),.feature-strip .cell:nth-child(2){border-bottom:1px solid var(--line)}
  .news-main{grid-template-columns:1fr}
  .news-main .cover img{min-height:0}
  .tier-md{grid-template-columns:1fr 1fr}
  .tier-sm{grid-template-columns:1fr 1fr}
  .rail .card{flex:0 0 46%}
  .reco{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;padding:56px 0}
  .footer-cols{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  h1{font-size:28px}
  h2{font-size:24px}
  h3{font-size:19px}
  .hero h1{font-size:28px}
  .hero-lead{font-size:16px}
  .hero-stats{gap:24px}
  .stat-num{font-size:24px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .feature-strip{grid-template-columns:1fr}
  .feature-strip .cell{border-right:0;border-bottom:1px solid var(--line)}
  .feature-strip .cell:last-child{border-bottom:0}
  .float-card{left:8px;bottom:10px;max-width:240px;padding:12px}
  .news-item{grid-template-columns:1fr;gap:10px}
  .tier-md,.tier-sm{grid-template-columns:1fr}
  .rail .card{flex:0 0 86%}
  .footer-cols{grid-template-columns:1fr}
  .footer-acc{display:block}
  .footer-static{display:none}
}

/* roulang page: article */
:root{
  --brand-500:#0FD3A6;
  --brand-600:#0AA98A;
  --brand-100:#D6FBF1;
  --accent:#FF8A3D;
  --accent-600:#E8732A;
  --violet:#7B61FF;
  --ink-900:#0E1116;
  --ink-700:#1A1F27;
  --paper:#F6F7F9;
  --card:#FFFFFF;
  --line:#E7EAEE;
  --text:#12161C;
  --text-2:#5A6472;
  --text-dark:#E9EDF2;
  --text-dark-2:#9BA6B4;
  --ok:#12B76A;
  --warn:#F04438;
  --info:#3B82F6;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --r-tag:999px;
  --sh-1:0 1px 2px rgba(14,17,22,.06), 0 8px 24px rgba(14,17,22,.06);
  --sh-2:0 14px 34px rgba(14,17,22,.12);
  --ease:200ms ease-out;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(15,211,166,.45);border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.grad-line{height:1px;border:0;margin:0;background:linear-gradient(90deg,rgba(15,211,166,0),var(--brand-500) 30%,var(--accent) 70%,rgba(255,138,61,0));}
.dot-bg{
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:18px 18px;
}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:box-shadow var(--ease),border-color var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{border-bottom:1px solid var(--line);box-shadow:0 6px 20px rgba(14,17,22,.06);}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;
  color:#fff;font-weight:700;font-size:17px;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-600) 55%,var(--accent));
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text);white-space:nowrap;}
.brand-text .sub{font-size:12px;font-weight:600;color:var(--brand-600);margin-left:4px;letter-spacing:0;}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 12px;
  font-size:14.5px;color:var(--text-2);border-radius:8px;transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--text);background:#F1F4F6;}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-14px;height:2px;
  background:var(--brand-500);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:240px;height:40px;padding:0 10px 0 12px;
  background:#F3F5F7;border:1px solid var(--line);border-radius:10px;color:var(--text-2);
  transition:width var(--ease),box-shadow var(--ease),border-color var(--ease),background var(--ease);
}
.cmd-search:focus-within{width:320px;background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(15,211,166,.16);}
.cmd-search input{flex:1;min-width:0;border:0;background:transparent;font-size:14px;outline:none;}
.cmd-search input::placeholder{color:#98A2AE;}
.kbd{
  font-family:Inter,Manrope,-apple-system,sans-serif;font-size:11px;color:#7B8695;
  border:1px solid var(--line);background:#fff;border-radius:6px;padding:1px 6px;line-height:1.5;
}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--text-2);
  transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.icon-btn:hover{color:var(--brand-600);border-color:rgba(15,211,166,.45);transform:translateY(-2px);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:-.01em;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  border:1.5px solid transparent;
}
.btn-primary{background:var(--brand-500);color:#07231C;border-color:var(--brand-500);}
.btn-primary:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:#fff;color:var(--text);border-color:rgba(15,211,166,.5);}
.btn-ghost:hover{background:rgba(15,211,166,.08);color:var(--brand-600);transform:translateY(-2px);}
.btn-accent{background:var(--accent);color:#3A1B03;border-color:var(--accent);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-600);
  padding:6px 2px;border-bottom:2px solid transparent;transition:border-color var(--ease),color var(--ease);
}
.btn-link svg{transition:transform var(--ease);}
.btn-link:hover{border-color:var(--brand-500);}
.btn-link:hover svg{transform:translateX(4px);}
.nav-toggle{display:none;width:44px;height:44px;place-items:center;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--text);}
/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;display:none;flex-direction:column;
  transform:translateY(-8px);opacity:0;transition:transform var(--ease),opacity var(--ease);
}
.drawer.is-open{display:flex;transform:translateY(0);opacity:1;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line);}
.drawer-body{padding:8px 12px;flex:1;overflow:auto;}
.drawer-body a{
  display:flex;align-items:center;height:52px;padding:0 14px;border-radius:10px;
  font-size:16px;color:var(--text);border-bottom:1px solid #F1F3F5;
}
.drawer-body a.is-active{color:var(--brand-600);font-weight:600;background:var(--brand-100);}
.drawer-foot{padding:14px 20px 24px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}
/* ---------- article ---------- */
.crumb{padding:22px 0 0;font-size:13.5px;color:var(--text-2);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb a{color:var(--text-2);transition:color var(--ease);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:#C3CAD3;}
.crumb .cur{color:var(--text);font-weight:600;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head{padding:26px 0 0;}
.badge{
  display:inline-flex;align-items:center;gap:5px;padding:3px 11px;border-radius:var(--r-tag);
  font-size:12px;line-height:18px;font-weight:600;
}
.badge-cat{background:var(--brand-100);color:#06705C;}
.badge-warm{background:#FFEFE3;color:#B8511A;}
.badge-violet{background:#EFEBFF;color:#4B34D6;}
.article-head h1{
  margin:14px 0 0;font-size:40px;line-height:1.32;font-weight:700;letter-spacing:-.02em;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:18px;
  font-size:13.5px;color:var(--text-2);
  font-family:Inter,Manrope,-apple-system,sans-serif;
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C7CED6;}
.meta-actions{margin-left:auto;display:flex;gap:10px;}
.chip-btn{
  display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 14px;
  border:1px solid var(--line);background:#fff;border-radius:10px;font-size:14px;color:var(--text-2);
  transition:color var(--ease),border-color var(--ease),transform var(--ease),background var(--ease);
}
.chip-btn:hover{color:var(--brand-600);border-color:rgba(15,211,166,.45);transform:translateY(-2px);}
.chip-btn.is-on{background:var(--brand-100);color:#06705C;border-color:rgba(15,211,166,.5);}
.cover-wrap{margin:28px 0 0;}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1);}
.cover-cap{margin-top:10px;font-size:13px;color:#8C97A5;text-align:center;}
.art-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:0;padding:44px 0 0;}
.art-main{max-width:760px;margin:0 auto;min-width:0;}
.art-body{font-size:17px;line-height:32px;color:#1B2028;}
.art-body h2{
  margin:40px 0 14px;font-size:26px;line-height:1.45;font-weight:700;letter-spacing:-.01em;
  padding-left:14px;border-left:4px solid var(--brand-500);
}
.art-body h3{margin:28px 0 10px;font-size:19px;line-height:1.5;font-weight:600;}
.art-body h4{margin:22px 0 8px;font-size:17px;font-weight:600;}
.art-body p{margin:14px 0;}
.art-body ul,.art-body ol{margin:16px 0;padding-left:4px;}
.art-body li{position:relative;padding-left:22px;margin:8px 0;}
.art-body ul li::before{
  content:"";position:absolute;left:4px;top:13px;width:7px;height:7px;border-radius:2px;
  background:var(--brand-500);transform:rotate(45deg);
}
.art-body ol{counter-reset:art-ol;}
.art-body ol li{counter-increment:art-ol;}
.art-body ol li::before{
  content:counter(art-ol,decimal-leading-zero);
  position:absolute;left:0;top:0;font-size:13px;font-weight:700;color:var(--brand-600);
  font-family:Inter,Manrope,sans-serif;
}
.art-body blockquote{
  margin:22px 0;padding:16px 20px;background:#F1FCF8;border-left:3px solid var(--brand-500);
  border-radius:0 12px 12px 0;color:#22303A;font-size:16px;
}
.art-body img{border-radius:12px;margin:22px auto;}
.art-body figure{margin:22px 0;}
.art-body figcaption{margin-top:10px;font-size:13px;color:#8C97A5;text-align:center;}
.art-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;display:block;overflow-x:auto;}
.art-body th,.art-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;}
.art-body thead th{background:#F3F6F8;font-weight:600;}
.art-body tbody tr:nth-child(even){background:#FAFBFC;}
.art-body a{color:var(--brand-600);border-bottom:1px solid rgba(15,211,166,.5);}
.art-body a:hover{color:var(--brand-500);}
.art-body hr{border:0;height:1px;background:var(--line);margin:32px 0;}
.art-side{display:none;}
.toc{position:sticky;top:96px;border:1px solid var(--line);background:#fff;border-radius:var(--r-card);padding:18px;box-shadow:var(--sh-1);}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.04em;color:#8C97A5;margin-bottom:10px;}
.toc a{
  display:block;font-size:14px;color:var(--text-2);padding:7px 10px;border-radius:8px;
  border-left:3px solid transparent;transition:all var(--ease);line-height:1.5;
}
.toc a:hover{color:var(--text);background:#F5F7F9;}
.toc a.is-cur{color:var(--brand-600);border-left-color:var(--brand-500);background:#F3FBF9;font-weight:600;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:38px 0 0;}
.tag{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:var(--r-tag);
  background:#F1F4F6;color:var(--text-2);font-size:13px;transition:all var(--ease);
}
.tag:hover{background:var(--brand-100);color:#06705C;}
.cta-narrow{
  margin:26px 0 0;padding:22px;border-radius:var(--r-card);border:1px solid var(--line);background:#fff;
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;box-shadow:var(--sh-1);
}
.cta-narrow strong{font-size:16px;}
.cta-narrow span{font-size:14px;color:var(--text-2);}
.cta-narrow .sp{margin-left:auto;display:flex;gap:10px;}
.empty-box{
  border:1px dashed #D8DEE5;background:#fff;border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.empty-box .ico{
  width:56px;height:56px;margin:0 auto 16px;display:grid;place-items:center;border-radius:14px;
  background:var(--brand-100);color:var(--brand-600);
}
.empty-box h2{font-size:20px;font-weight:700;margin-bottom:8px;}
.empty-box p{color:var(--text-2);font-size:14.5px;margin-bottom:16px;}
/* ---------- related ---------- */
.related{padding:72px 0 0;}
.sec-head{display:flex;align-items:flex-end;gap:16px;margin-bottom:22px;}
.sec-head h2{font-size:26px;font-weight:700;letter-spacing:-.01em;}
.sec-head .sub{font-size:14px;color:var(--text-2);padding-bottom:5px;}
.sec-head .more{margin-left:auto;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,211,166,.35);}
.rel-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.rel-body{padding:18px 20px 20px;}
.rel-body .badge{margin-bottom:10px;}
.rel-body h3{font-size:17px;line-height:1.55;font-weight:600;margin-bottom:8px;}
.rel-body .time{font-size:13px;color:#8C97A5;font-family:Inter,Manrope,sans-serif;}
.back-row{display:flex;flex-wrap:wrap;gap:22px;padding:34px 0 0;}
/* ---------- footer ---------- */
.site-footer{margin-top:88px;background:var(--ink-900);color:var(--text-dark-2);padding:0 0 28px;}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding:52px 0 30px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#9BA6B4;margin:14px 0 10px;max-width:340px;}
.site-footer .brand-text{color:#fff;}
.footer-title{font-size:14px;font-weight:700;color:#E9EDF2;margin-bottom:14px;}
.footer-links li{margin:9px 0;}
.footer-links a{font-size:14px;color:#9BA6B4;transition:color var(--ease);}
.footer-links a:hover{color:var(--brand-500);}
.footer-acc{display:none;padding-top:8px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.10);font-size:13px;color:#7E8896;
}
@media (max-width:1023px){
  .footer-cols{display:none;}
  .footer-acc{display:block;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:1200px){
  .art-layout{grid-template-columns:minmax(0,1fr) 240px;gap:48px;align-items:start;}
  .art-main{margin:0;max-width:760px;}
  .art-side{display:block;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .cmd-search{display:none;}
  .nav-toggle{display:grid;}
  .nav-inner{height:60px;gap:14px;}
  .brand-text{font-size:16px;}
  .article-head h1{font-size:32px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .article-head h1{font-size:28px;line-height:1.38;}
  .meta-row{font-size:12.5px;gap:8px 12px;}
  .meta-actions{margin-left:0;width:100%;}
  .art-layout{padding-top:30px;}
  .art-body{font-size:16.5px;line-height:30px;}
  .art-body h2{font-size:21px;}
  .related{padding-top:56px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .sec-head{flex-wrap:wrap;}
  .sec-head .more{margin-left:0;}
  .cta-narrow .sp{margin-left:0;width:100%;}
  .cta-narrow .sp .btn{flex:1;}
  .site-footer{margin-top:64px;}
}

/* roulang page: category1 */
:root{
  --brand-500:#0FD3A6;
  --brand-600:#0AA98A;
  --brand-100:#D6FBF1;
  --accent:#FF8A3D;
  --accent-600:#E8732A;
  --violet:#7B61FF;
  --ink-900:#0E1116;
  --ink-700:#1A1F27;
  --paper:#F6F7F9;
  --card:#FFFFFF;
  --line:#E7EAEE;
  --text:#12161C;
  --text-2:#5A6472;
  --text-inv:#E9EDF2;
  --text-inv-2:#9BA6B4;
  --ok:#12B76A;
  --warn:#F04438;
  --info:#3B82F6;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --r-img:16px;
  --sh-1:0 1px 2px rgba(14,17,22,.06),0 8px 24px rgba(14,17,22,.06);
  --sh-2:0 14px 34px rgba(14,17,22,.12);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","Manrope",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:#FFFFFF;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.28;letter-spacing:-.01em;}
hr{border:0;margin:0;}
:focus-visible{outline:3px solid rgba(15,211,166,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.grad-line{height:2px;background:linear-gradient(90deg,var(--brand-500),var(--accent));}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-600);
}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--brand-500),var(--accent));display:block;border-radius:2px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,background-color .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--brand-500);color:#08231D;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-600);color:#04201A;box-shadow:var(--sh-2);}
.btn-outline{background:transparent;border-color:var(--brand-500);color:#0A6E5B;}
.btn-outline:hover{background:rgba(15,211,166,.1);}
.btn-accent{background:var(--accent);color:#3A1B05;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--accent-600);color:#2A1303;box-shadow:var(--sh-2);}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;font-size:15px;font-weight:600;color:#0A6E5B;
  border-bottom:2px solid transparent;transition:border-color .2s ease-out,color .2s ease-out;
}
.btn-text svg{transition:transform .2s ease-out;}
.btn-text:hover{border-bottom-color:var(--brand-500);color:var(--brand-600);}
.btn-text:hover svg{transform:translateX(4px);}
.btn-sm{min-height:38px;padding:0 14px;font-size:14px;}

/* ---------- 徽章 · 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:18px;
}
.badge-brand{background:var(--brand-100);color:#0A6E5B;}
.badge-accent{background:#FFEFE3;color:#9C4A12;}
.badge-muted{background:#EEF1F4;color:var(--text-2);}
.badge-inv{background:rgba(255,255,255,.14);color:#DFF7F0;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px rgba(14,17,22,.05);}
.nav-inner{
  height:68px;display:flex;align-items:center;gap:22px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-600) 60%,#0AA98A);
  color:#04231C;font-weight:800;font-size:17px;font-family:var(--font-num);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  box-shadow:0 6px 16px rgba(15,211,166,.32);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text);}
.brand-text .sub{font-size:12px;font-weight:600;color:var(--brand-600);margin-left:4px;letter-spacing:.02em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--text-2);border-radius:8px;
  transition:color .2s ease-out,background-color .2s ease-out;
}
.nav-link:hover{color:var(--text);background:rgba(15,211,166,.08);}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-500),var(--accent));
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 10px 0 12px;
  background:#F2F4F7;border:1px solid var(--line);border-radius:var(--r-input);
  color:var(--text-2);
  transition:width .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out,background-color .22s ease-out;
}
.cmd-search:focus-within{
  width:320px;background:#fff;border-color:rgba(15,211,166,.6);
  box-shadow:0 0 0 4px rgba(15,211,166,.16);
}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.cmd-search input::placeholder{color:#93A0AE;}
.kbd{
  font-family:var(--font-num);font-size:11px;font-weight:600;color:#7A8695;
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:2px 6px;line-height:1.2;
}
.site-header.is-scrolled .kbd{background:#fff;}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;border-radius:10px;
  color:var(--text-2);border:1px solid var(--line);background:#fff;
  transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.icon-btn:hover{color:#0A6E5B;background:var(--brand-100);border-color:rgba(15,211,166,.4);transform:translateY(-2px);}
.nav-toggle{
  display:none;width:42px;height:42px;place-items:center;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--text);cursor:pointer;
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);}
.crumb a{color:var(--text-2);transition:color .2s ease-out;}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:#C3CAD3;}
.crumb .now{color:var(--text);font-weight:600;}

/* ---------- 页头 ---------- */
.page-hero{padding:26px 0 20px;}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:44px;align-items:center;
}
.hero-copy h1{
  font-size:40px;font-weight:700;letter-spacing:-.02em;margin:16px 0 0;
}
.hero-copy h1 .hl{
  background:linear-gradient(90deg,var(--brand-500),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{margin-top:18px;font-size:17px;line-height:1.9;color:var(--text-2);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:28px;}
.hero-visual{position:relative;}
.hero-visual .frame{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  box-shadow:var(--sh-2);
  clip-path:polygon(16px 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%,0 16px);
}
.hero-visual .frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,17,22,.05),rgba(14,17,22,.32));
}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.float-card{
  position:absolute;left:-18px;bottom:-20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:14px 16px;min-width:196px;
}
.float-card .fc-top{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);}
.dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(18,183,106,.16);}
.float-card strong{display:block;margin-top:6px;font-size:15px;color:var(--text);}
.float-card span.small{font-size:12px;color:var(--text-2);}

/* ---------- 锚点 chip 条 ---------- */
.anchor-bar{
  position:sticky;top:68px;z-index:60;
  background:rgba(246,247,249,.94);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  margin-top:38px;
}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:14px;font-weight:500;color:var(--text-2);white-space:nowrap;
  transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.chip:hover{color:#0A6E5B;border-color:rgba(15,211,166,.5);transform:translateY(-2px);}
.chip.is-on{background:var(--brand-100);border-color:rgba(15,211,166,.55);color:#075244;font-weight:600;}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section.paper{background:var(--paper);}
.section.tight{padding:64px 0;}
.section-head{max-width:720px;}
.section-head h2{font-size:30px;font-weight:700;margin-top:14px;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- 本节要点 3 条 ---------- */
.keypoints{margin-top:44px;display:grid;gap:18px;}
.kp-item{
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:22px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.kp-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,211,166,.35);}
.kp-num{
  font-family:var(--font-num);font-size:26px;font-weight:800;line-height:1;
  color:var(--violet);letter-spacing:-.02em;
  padding:6px 2px 0;
}
.kp-item h3{font-size:20px;font-weight:600;}
.kp-item p{margin-top:8px;color:var(--text-2);font-size:15px;line-height:1.85;}
.kp-item .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* ---------- 三步流程 ---------- */
.steps{
  margin-top:48px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;position:relative;
}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,211,166,.35);}
.step-top{display:flex;align-items:center;gap:12px;}
.step-num{
  width:38px;height:38px;display:grid;place-items:center;border-radius:11px;
  font-family:var(--font-num);font-weight:700;font-size:15px;
  background:linear-gradient(135deg,rgba(15,211,166,.18),rgba(123,97,255,.16));
  color:#0A6E5B;border:1px solid rgba(15,211,166,.32);
}
.step h3{font-size:18px;font-weight:600;}
.step p{margin-top:12px;font-size:14.5px;color:var(--text-2);line-height:1.85;}
.step ul{margin-top:14px;display:grid;gap:8px;}
.step ul li{
  position:relative;padding-left:18px;font-size:14px;color:var(--text-2);line-height:1.7;
}
.step ul li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand-500),var(--accent));
}
.step-connect{
  position:absolute;top:44px;height:2px;left:0;right:0;
  background:linear-gradient(90deg,var(--brand-500),var(--accent));
  opacity:.35;
}

/* ---------- 图文交替 ---------- */
.split{display:grid;gap:52px;align-items:center;margin-top:0;}
.split + .split{margin-top:76px;}
.split-8-4{grid-template-columns:minmax(0,1.9fr) minmax(0,1fr);}
.split-4-8{grid-template-columns:minmax(0,1fr) minmax(0,1.9fr);}
.split h3{font-size:22px;font-weight:600;}
.split p{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.9;}
.ticks{margin-top:18px;display:grid;gap:10px;}
.ticks li{position:relative;padding-left:26px;font-size:15px;color:var(--text-2);}
.ticks li::before{
  content:"";position:absolute;left:0;top:7px;width:16px;height:16px;border-radius:50%;
  background:var(--brand-100);
}
.ticks li::after{
  content:"";position:absolute;left:5px;top:12px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-600);
}
.media{
  border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);position:relative;
  border:1px solid var(--line);
}
.media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.media.wide img{aspect-ratio:16/10;}
.media-caption{
  margin-top:10px;font-size:13px;color:var(--text-2);text-align:center;
}

/* ---------- 提示条 ---------- */
.note-bar{
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:start;
  background:#FFF6EF;border:1px solid #FFE2CD;border-left:4px solid var(--accent);
  border-radius:12px;padding:18px 20px;margin-top:28px;
}
.note-bar .nb-icon{
  width:34px;height:34px;display:grid;place-items:center;border-radius:9px;
  background:#FFE7D6;color:var(--accent-600);flex:0 0 auto;
}
.note-bar h4{font-size:16px;font-weight:600;color:#8A4412;}
.note-bar p{margin-top:6px;font-size:14.5px;color:#8A4412;line-height:1.8;}

/* ---------- 场景清单 ---------- */
.scene-list{margin-top:40px;display:grid;gap:12px;}
.scene-item{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center;
  padding:18px 20px 18px 24px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  border-left:3px solid var(--brand-500);
  transition:border-left-width .18s ease-out,background-color .2s ease-out,transform .2s ease-out;
}
.scene-item:hover{border-left-width:4px;background:#F3FBF9;transform:translateY(-2px);}
.scene-item h4{font-size:16.5px;font-weight:600;}
.scene-item p{margin-top:6px;font-size:14px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{margin-top:40px;display:grid;gap:10px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq-item[open]{border-color:rgba(15,211,166,.45);box-shadow:var(--sh-2);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16.5px;font-weight:600;color:var(--text);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:0;
  background:linear-gradient(180deg,var(--brand-500),var(--accent));border-radius:0 3px 3px 0;
  transition:width .25s ease-out;
}
.faq-item[open] summary::before{width:4px;}
.faq-item[open] summary{color:#0A6E5B;}
.faq-icon{
  width:28px;height:28px;flex:0 0 auto;display:grid;place-items:center;
  border-radius:50%;border:1px solid var(--line);color:var(--text-2);
  transition:transform .3s ease-out,color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;
}
.faq-item[open] .faq-icon{transform:rotate(180deg);color:#0A6E5B;border-color:rgba(15,211,166,.5);background:var(--brand-100);}
.faq-body{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.9;}
.faq-body p + p{margin-top:10px;}

/* ---------- 相关条目网格 ---------- */
.rel-grid{margin-top:44px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  border-left:4px solid var(--brand-500);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  display:flex;flex-direction:column;
}
.rel-card:nth-child(2){border-left-color:var(--accent);}
.rel-card:nth-child(3){border-left-color:var(--violet);}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.rel-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:17.5px;font-weight:600;}
.rel-body p{font-size:14px;color:var(--text-2);line-height:1.8;flex:1;}
.rel-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-2);font-family:var(--font-num);}
.rel-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:#0A6E5B;}
.rel-link svg{transition:transform .2s ease-out;}
.rel-card:hover .rel-link svg{transform:translateX(4px);}

/* ---------- 底部 CTA ---------- */
.cta-bar{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:var(--text-inv);
  padding:64px 0;
}
.cta-bar::before{
  content:"";position:absolute;top:-120px;right:-80px;width:520px;height:320px;
  background:linear-gradient(135deg,var(--brand-500),var(--accent));
  filter:blur(2px);opacity:.9;
  clip-path:polygon(18% 0,100% 0,100% 100%,0 78%);
}
.cta-bar::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:18px 18px;opacity:.5;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-inner h2{font-size:28px;font-weight:700;color:#fff;max-width:560px;}
.cta-inner p{margin-top:12px;color:#C6CFDA;font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--text-inv-2);padding-bottom:28px;}
.footer-cols{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding:54px 0 34px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:#9BA6B4;max-width:330px;}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.1em;color:#E9EDF2;margin-bottom:16px;text-transform:uppercase;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:#9BA6B4;transition:color .2s ease-out,padding-left .2s ease-out;}
.footer-links a:hover{color:var(--brand-500);padding-left:4px;}
.footer-acc{display:none;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:20px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8794;
}
.footer-bottom a{color:#9BA6B4;}
.footer-bottom a:hover{color:var(--brand-500);}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{max-width:1160px;}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;inset:60px 0 0 0;z-index:95;
    background:rgba(255,255,255,.99);backdrop-filter:blur(14px);
    flex-direction:column;align-items:stretch;gap:0;padding:16px 20px 96px;
    margin:0;display:none;overflow-y:auto;
  }
  .nav-links.is-open{display:flex;}
  .nav-link{height:52px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;padding:0 4px;}
  .nav-link.is-active::after{left:4px;right:auto;width:34px;bottom:14px;}
  .nav-toggle{display:grid;}
  .cmd-search{display:none;}
  .nav-inner{height:60px;gap:12px;}
  .icon-btn{display:none;}
  .page-hero{padding:18px 0 12px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-copy h1{font-size:31px;}
  .float-card{left:auto;right:12px;bottom:-18px;}
  .anchor-bar{top:60px;}
  .section{padding:60px 0;}
  .steps{grid-template-columns:1fr;}
  .split-8-4,.split-4-8{grid-template-columns:1fr;gap:28px;}
  .split-4-8 .media{order:-1;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
}
@media (max-width:767px){
  .hero-copy h1{font-size:28px;}
  .section-head h2{font-size:25px;}
  .section{padding:52px 0;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-cols{display:none;}
  .footer-acc{display:grid;gap:10px;padding:38px 0 12px;}
  .footer-acc .faq-item{background:transparent;border-color:rgba(255,255,255,.14);box-shadow:none;}
  .footer-acc .faq-item summary{color:#E9EDF2;font-size:15px;padding:16px 4px;}
  .footer-acc .footer-links{padding:0 4px 16px;}
  .footer-acc .faq-icon{color:#9BA6B4;border-color:rgba(255,255,255,.2);}
  .cta-inner h2{font-size:23px;}
  .kp-item{grid-template-columns:1fr;gap:10px;padding:22px 20px;}
  .kp-num{padding-top:0;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  .hero-copy h1{font-size:25px;}
  .lead{font-size:15.5px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .scene-item{grid-template-columns:1fr;}
}

/* roulang page: category2 */
:root{
  --brand-500:#0FD3A6;
  --brand-600:#0AA98A;
  --brand-100:#D6FBF1;
  --accent:#FF8A3D;
  --accent-600:#E8732A;
  --violet:#7B61FF;
  --ink-900:#0E1116;
  --ink-700:#1A1F27;
  --paper:#F6F7F9;
  --card:#FFFFFF;
  --line:#E7EAEE;
  --text:#12161C;
  --text-2:#5A6472;
  --text-inv:#E9EDF2;
  --text-inv-2:#9BA6B4;
  --ok:#12B76A;
  --shadow-1:0 1px 2px rgba(14,17,22,.06),0 8px 24px rgba(14,17,22,.06);
  --shadow-2:0 14px 34px rgba(14,17,22,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --r-pill:999px;
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 12px;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
button{font:inherit;cursor:pointer;}
input{font:inherit;}
:focus-visible{outline:3px solid rgba(15,211,166,.45);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.grad-line{height:2px;border:0;margin:0;background:linear-gradient(90deg,var(--brand-500),var(--accent));}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),box-shadow var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(14,17,22,.05);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-600));
  color:#062B23;font-weight:700;font-size:17px;
  clip-path:polygon(12% 0,100% 0,88% 100%,0 100%);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.brand-text .sub{font-size:12px;font-weight:600;color:var(--brand-600);margin-left:4px;letter-spacing:.06em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:14px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;
  font-size:15px;color:var(--text-2);border-radius:8px;transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(15,211,166,.07);}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-500),var(--accent));
}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:240px;height:42px;padding:0 12px;
  background:#fff;border:1px solid #DDE2E8;border-radius:var(--r-btn);
  color:var(--text-2);transition:width var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.cmd-search:focus-within{width:320px;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(15,211,166,.16);}
.cmd-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;color:var(--text);}
.cmd-search input::placeholder{color:#9BA6B4;}
.kbd{
  font-family:Inter,Manrope,-apple-system,sans-serif;font-size:11px;line-height:1;
  padding:5px 6px;border:1px solid var(--line);border-radius:6px;color:#8C97A5;background:#F9FAFB;
}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--text-2);
  transition:color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.icon-btn:hover{color:var(--brand-600);border-color:rgba(15,211,166,.45);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--brand-500);color:#062B23;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-600);color:#04211B;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-ghost{border-color:var(--brand-500);color:var(--brand-600);background:#fff;}
.btn-ghost:hover{background:rgba(15,211,166,.1);transform:translateY(-2px);}
.btn-accent{background:var(--accent);color:#3A1602;}
.btn-accent:hover{background:var(--accent-600);transform:translateY(-2px);}
.btn .arrow{transition:transform var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.nav-toggle{
  display:none;width:42px;height:42px;place-items:center;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--text);
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);
  border-bottom:2px solid transparent;transition:border-color var(--ease),gap var(--ease);
}
.link-more:hover{border-color:var(--brand-500);gap:10px;}

/* ---------- breadcrumb ---------- */
.crumbs{padding:22px 0 0;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);}
.crumbs li::after{content:"/";margin-left:8px;color:#C4CBD4;}
.crumbs li:last-child::after{content:"";}
.crumbs a:hover{color:var(--brand-600);}
.crumbs .now{color:var(--text);font-weight:600;}

/* ---------- page hero ---------- */
.page-hero{padding:28px 0 8px;}
.hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:44px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;margin-bottom:16px;
  background:var(--brand-100);color:#065C4B;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600);}
.page-hero h1{font-size:40px;line-height:1.2;letter-spacing:-.02em;margin-bottom:16px;}
.page-hero .lede{font-size:17px;color:var(--text-2);max-width:620px;}
.hero-art{
  position:relative;border-radius:var(--r-img);overflow:hidden;min-height:290px;
  clip-path:polygon(0 0,100% 0,100% 88%,92% 100%,0 100%);
  background:#0E1116;
}
.hero-art img{width:100%;height:100%;min-height:290px;object-fit:cover;opacity:.66;}
.hero-art .art-cap{
  position:absolute;left:20px;right:20px;bottom:18px;color:var(--text-inv);
  font-size:14px;line-height:1.6;
}
.hero-art .art-badge{
  position:absolute;top:16px;left:16px;padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);backdrop-filter:blur(6px);color:#fff;font-size:12px;font-weight:600;
}

/* ---------- anchor bar ---------- */
.anchor-bar{position:sticky;top:68px;z-index:40;background:rgba(246,247,249,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);margin-top:26px;}
.anchor-inner{display:flex;gap:8px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  font-size:14px;color:var(--text-2);transition:all var(--ease);
}
.anchor-chip:hover{color:var(--brand-600);border-color:rgba(15,211,166,.5);}
.anchor-chip.is-on{background:var(--ink-900);border-color:var(--ink-900);color:var(--text-inv);}

/* ---------- sections ---------- */
.section{padding:76px 0;}
.section.tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head h2{font-size:30px;line-height:1.3;margin-bottom:12px;}
.section-head p{color:var(--text-2);}
.section-head .row-between{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.band-white{background:#fff;}
.band-dark{background:var(--ink-900);color:var(--text-inv);}
.band-dark .section-head p{color:var(--text-inv-2);}

/* ---------- matrix ---------- */
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.matrix-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);position:relative;overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.matrix-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,211,166,.35);}
.matrix-card .idx{
  position:absolute;top:18px;right:20px;font-family:Inter,Manrope,sans-serif;
  font-size:13px;font-weight:700;color:var(--violet);
}
.matrix-card .ic{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  background:var(--brand-100);color:#06685453;color:#066854;margin-bottom:16px;
}
.matrix-card h3{font-size:20px;margin-bottom:10px;}
.matrix-card p{color:var(--text-2);font-size:15px;margin-bottom:14px;}
.tick-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);line-height:1.9;}
.tick-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand-500),var(--accent));
}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1.6fr 1fr;gap:44px;align-items:center;}
.split.rev{grid-template-columns:1fr 1.6fr;}
.split-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split h2{font-size:28px;margin-bottom:14px;}
.split p{color:var(--text-2);}
.mini-cards{display:grid;gap:12px;margin-top:20px;}
.mini-card{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--brand-500);
  border-radius:10px;padding:16px 18px;transition:border-left-width var(--ease),background var(--ease);
}
.mini-card:hover{border-left-width:4px;background:#F3FBF9;}
.mini-card strong{display:block;font-size:15px;margin-bottom:4px;}
.mini-card span{font-size:14px;color:var(--text-2);}

/* ---------- tags ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:14px;color:var(--text-2);
  transition:all var(--ease);
}
.tag:hover{color:var(--brand-600);border-color:rgba(15,211,166,.5);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-cat{background:var(--brand-100);color:#06604E;}
.badge-state{background:#FFEEDF;color:#9A4A10;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  position:relative;transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.step .num{
  font-family:Inter,Manrope,sans-serif;font-size:13px;font-weight:700;color:#fff;
  width:30px;height:30px;display:grid;place-items:center;border-radius:8px;
  background:linear-gradient(135deg,var(--violet),var(--brand-500));margin-bottom:14px;
}
.step h4{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-2);margin:0;}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:22px;
}
.stat b{display:block;font-family:Inter,Manrope,sans-serif;font-size:30px;line-height:1.1;color:var(--brand-500);margin-bottom:6px;}
.stat span{font-size:14px;color:var(--text-inv-2);}

/* ---------- list rows ---------- */
.rows{display:grid;gap:12px;}
.row{
  display:grid;grid-template-columns:64px 1fr auto;gap:18px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 22px;border-left:3px solid var(--brand-500);
  transition:border-left-width var(--ease),background var(--ease),transform var(--ease);
}
.row:hover{border-left-width:4px;background:#F3FBF9;transform:translateY(-2px);}
.row .no{font-family:Inter,Manrope,sans-serif;font-size:18px;font-weight:700;color:#B9C2CD;}
.row h4{font-size:17px;margin-bottom:4px;}
.row p{margin:0;font-size:14px;color:var(--text-2);}
.row .meta{font-size:13px;color:var(--text-2);white-space:nowrap;}

/* ---------- faq ---------- */
.faq{display:grid;gap:10px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:0 22px;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:rgba(15,211,166,.4);box-shadow:var(--shadow-1);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16px;font-weight:600;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:-22px;top:12px;bottom:12px;width:4px;border-radius:0 4px 4px 0;
  background:var(--brand-500);opacity:0;transition:opacity var(--ease);
}
.faq-item[open] summary{color:var(--brand-600);}
.faq-item[open] summary::before{opacity:1;}
.faq-item summary .sign{
  flex:0 0 auto;width:26px;height:26px;display:grid;place-items:center;border-radius:8px;
  border:1px solid var(--line);color:var(--text-2);font-size:16px;line-height:1;
  transition:transform 300ms ease,color var(--ease),border-color var(--ease);
}
.faq-item[open] summary .sign{transform:rotate(180deg);color:var(--brand-600);border-color:rgba(15,211,166,.5);}
.faq-item .answer{padding:0 0 20px;color:var(--text-2);font-size:15px;max-width:760px;}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-card{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand-500);
  border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-left-color var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-left-color:var(--accent);}
.rel-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.rel-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-card h3{font-size:18px;}
.rel-card p{font-size:14px;color:var(--text-2);margin:0;}
.rel-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-2);}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  background:linear-gradient(115deg,var(--ink-900) 0%,#12252A 52%,#1F2B26 100%);
  color:var(--text-inv);padding:48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:14px 14px;opacity:.5;
}
.cta-band::after{
  content:"";position:absolute;top:-40px;right:-60px;width:280px;height:280px;
  background:linear-gradient(135deg,rgba(15,211,166,.35),rgba(255,138,61,.3));
  clip-path:polygon(18% 0,100% 0,82% 100%,0 100%);opacity:.55;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.4fr .8fr;gap:32px;align-items:center;}
.cta-inner h2{font-size:28px;margin-bottom:12px;}
.cta-inner p{color:var(--text-inv-2);margin:0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:var(--text-inv);padding:0 0 28px;margin-top:40px;}
.footer-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:52px 0 36px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{color:var(--text-inv-2);font-size:14px;line-height:1.8;margin-bottom:10px;max-width:340px;}
.footer-title{font-size:15px;font-weight:700;margin-bottom:14px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:var(--text-inv-2);font-size:14px;transition:color var(--ease);}
.footer-links a:hover{color:var(--brand-500);}
.footer-acc{display:none;border-top:1px solid rgba(255,255,255,.14);}
.footer-acc .faq-item{border:0;border-bottom:1px solid rgba(255,255,255,.14);background:transparent;border-radius:0;padding:0;}
.footer-acc .faq-item summary{color:var(--text-inv);padding:16px 0;font-size:15px;}
.footer-acc .faq-item summary .sign{border-color:rgba(255,255,255,.24);color:var(--text-inv-2);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:20px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8C97A5;
}

/* ---------- responsive ---------- */
@media (max-width:1439px){
  .container{max-width:1120px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .cmd-search{width:200px;}
  .cmd-search:focus-within{width:240px;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .page-hero h1{font-size:34px;}
  .split,.split.rev{grid-template-columns:1fr;gap:26px;}
  .matrix{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr 1fr;}
  .stats{grid-template-columns:1fr 1fr;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-cols{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .nav-inner{height:60px;gap:12px;}
  .cmd-search,.nav-right .icon-btn{display:none;}
  .nav-toggle{display:grid;}
  .site-header.is-open .nav-links{
    display:flex;position:fixed;left:0;right:0;top:60px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;padding:12px 16px 96px;
    background:#fff;margin:0;overflow-y:auto;z-index:70;
    box-shadow:0 20px 40px rgba(14,17,22,.12);
  }
  .site-header.is-open .nav-link{height:52px;padding:0 4px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;}
  .site-header.is-open .nav-link::after{display:none;}
  .site-header.is-open .nav-link.is-active{color:var(--brand-600);}
  .site-header.is-open .nav-right .btn-primary{position:fixed;left:16px;right:16px;bottom:20px;z-index:80;display:inline-flex;}
  .section{padding:56px 0;}
  .section.tight{padding:44px 0;}
  .page-hero h1{font-size:28px;}
  .page-hero .lede{font-size:15px;}
  .section-head h2{font-size:24px;}
  .matrix,.steps,.stats,.rel-grid{grid-template-columns:1fr;}
  .anchor-bar{top:60px;}
  .row{grid-template-columns:1fr;gap:8px;}
  .row .meta{white-space:normal;}
  .cta-band{padding:30px 22px;}
  .cta-band::after{display:none;}
  .cta-inner h2{font-size:22px;}
  .footer-cols{display:none;}
  .footer-acc{display:block;}
  .footer-brand{display:block;padding:32px 0 16px;}
}
@media (max-width:519px){
  .page-hero h1{font-size:24px;}
  .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .brand-text{font-size:15px;}
  .tag{font-size:13px;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --brand-500:#0FD3A6;
  --brand-600:#0AA98A;
  --brand-100:#D6FBF1;
  --accent:#FF8A3D;
  --accent-600:#E8732A;
  --violet:#7B61FF;
  --ink-900:#0E1116;
  --ink-700:#1A1F27;
  --paper:#F6F7F9;
  --card:#FFFFFF;
  --line:#E7EAEE;
  --txt:#12161C;
  --txt-2:#5A6472;
  --dark-txt:#E9EDF2;
  --dark-txt-2:#9BA6B4;
  --success:#12B76A;
  --warn:#F04438;
  --info:#3B82F6;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --shadow-1:0 1px 2px rgba(14,17,22,.06),0 8px 24px rgba(14,17,22,.06);
  --shadow-2:0 14px 34px rgba(14,17,22,.12);
  --container:1200px;
  --nav-h:68px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--txt);
  background:#FFFFFF;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font:inherit;}
h1,h2,h3,h4{margin:0 0 14px;font-weight:700;letter-spacing:-0.01em;color:var(--txt);}
h1{font-size:40px;line-height:1.2;letter-spacing:-0.02em;}
h2{font-size:30px;line-height:1.28;}
h3{font-size:22px;line-height:1.36;font-weight:600;}
h4{font-size:18px;line-height:1.44;font-weight:600;}
:focus-visible{outline:3px solid rgba(15,211,166,.45);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-100);color:#062A22;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.num{font-family:"Inter","Manrope",-apple-system,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:-0.01em;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(14,17,22,.05);}
.nav-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h);}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;
  background:linear-gradient(135deg,#0FD3A6,#0AA98A);
  color:#062A22;font-weight:800;font-size:17px;
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
}
.brand-text{font-size:17px;font-weight:700;color:var(--txt);letter-spacing:-0.01em;white-space:nowrap;}
.brand-text .sub{font-size:12px;font-weight:600;color:var(--brand-600);margin-left:3px;letter-spacing:0;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;font-size:15px;color:var(--txt-2);
  border-radius:8px;transition:color .18s ease-out,background .18s ease-out;
}
.nav-link:hover{color:var(--txt);background:var(--paper);}
.nav-link.is-active{color:var(--txt);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand-500);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.cmd-search{
  display:flex;align-items:center;gap:8px;height:40px;width:240px;
  padding:0 10px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper);color:var(--txt-2);
  transition:width .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out,background .22s ease-out;
}
.cmd-search:focus-within{
  width:320px;background:#fff;border-color:rgba(15,211,166,.6);
  box-shadow:0 0 0 4px rgba(15,211,166,.14);
}
.cmd-search svg{flex:0 0 auto;}
.cmd-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--txt);
}
.cmd-search input::placeholder{color:#98A2B0;}
.kbd{
  flex:0 0 auto;font-size:11px;line-height:1;padding:3px 6px;
  border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--txt-2);
}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;flex:0 0 auto;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--txt-2);
  transition:transform .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.icon-btn:hover{color:var(--brand-600);border-color:rgba(15,211,166,.5);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.nav-toggle{
  display:none;width:40px;height:40px;place-items:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--txt);
}

/* ============ 按钮族 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;white-space:nowrap;
  transition:transform .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{background:var(--brand-500);color:#062A22;box-shadow:0 1px 2px rgba(14,17,22,.06);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-ghost{border-color:var(--brand-500);color:var(--brand-600);background:#fff;}
.btn-ghost:hover{background:rgba(15,211,166,.08);transform:translateY(-2px);}
.btn-accent{background:var(--accent);color:#3A1A05;}
.btn-accent:hover{background:var(--accent-600);color:#2A1203;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-600);}
.link-arrow svg{transition:transform .2s ease-out;}
.link-arrow:hover svg{transform:translateX(4px);}
.link-arrow span{border-bottom:2px solid transparent;transition:border-color .2s ease-out;}
.link-arrow:hover span{border-bottom-color:var(--brand-500);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:18px;font-weight:600;
  padding:3px 10px;border-radius:999px;
}
.badge-brand{background:var(--brand-100);color:#0A7A63;}
.badge-accent{background:#FFF0E4;color:#B95613;}
.badge-plain{background:var(--paper);color:var(--txt-2);border:1px solid var(--line);}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--txt-2);margin-bottom:22px;}
.breadcrumb a{color:var(--txt-2);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:#C3CAD3;}

/* ============ 分类页头 ============ */
.page-hero{
  position:relative;overflow:hidden;padding:52px 0 56px;
  background:var(--paper);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(15,211,166,.18) 1px,transparent 1px);
  background-size:18px 18px;
  opacity:.5;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand-500) 0%,var(--accent) 60%,rgba(255,138,61,0) 100%);
}
.page-hero .container{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:8fr 4fr;gap:44px;align-items:center;}
.hero-copy h1{max-width:18em;}
.hero-lead{font-size:17px;line-height:1.8;color:var(--txt-2);max-width:34em;margin:14px 0 24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:32px;}
.hero-facts li{display:flex;flex-direction:column;}
.hero-facts .val{font-size:26px;font-weight:700;color:var(--txt);line-height:1.2;}
.hero-facts .lab{font-size:13px;color:var(--txt-2);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;height:300px;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-img);
  background:linear-gradient(180deg,rgba(14,17,22,0) 45%,rgba(14,17,22,.55) 100%);
  pointer-events:none;
}
.float-card{
  position:absolute;left:-18px;bottom:20px;z-index:2;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:12px 16px;box-shadow:var(--shadow-2);min-width:170px;
}
.float-card .fc-t{font-size:12px;color:var(--txt-2);}
.float-card .fc-v{font-size:16px;font-weight:700;color:var(--txt);display:flex;align-items:center;gap:8px;}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--success);display:inline-block;}

/* ============ 锚点条 ============ */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:60;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;gap:8px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  font-size:14px;font-weight:500;color:var(--txt-2);
  border:1px solid var(--line);border-radius:999px;background:#fff;
  white-space:nowrap;transition:color .2s ease-out,border-color .2s ease-out,background .2s ease-out;
}
.chip:hover{color:var(--brand-600);border-color:rgba(15,211,166,.5);background:var(--brand-100);}
.chip.is-active{color:#062A22;background:var(--brand-100);border-color:rgba(15,211,166,.5);font-weight:600;}

/* ============ 板块通用 ============ */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head p{color:var(--txt-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand-600);margin-bottom:10px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand-500),var(--accent));}

/* ============ 自检卡 ============ */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.check-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,211,166,.35);}
.check-card .idx{
  display:inline-grid;place-items:center;width:34px;height:34px;margin-bottom:14px;
  border-radius:10px;background:linear-gradient(135deg,rgba(123,97,255,.16),rgba(15,211,166,.2));
  color:#3B2FB0;font-size:14px;font-weight:800;
}
.check-card h3{font-size:18px;margin-bottom:8px;}
.check-card p{font-size:15px;color:var(--txt-2);line-height:1.7;}

/* ============ 常见问题 ============ */
.faq-list{max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  margin-bottom:10px;overflow:hidden;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq-item:hover{border-color:rgba(15,211,166,.35);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--txt);
  cursor:pointer;list-style:none;
  transition:color .25s ease-out,box-shadow .25s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:600;line-height:1;
  color:var(--brand-600);transition:transform .3s ease-out;
}
.faq-item[open] summary{color:var(--brand-600);box-shadow:inset 4px 0 0 var(--brand-500);}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-body{padding:0 20px 20px;color:var(--txt-2);font-size:15px;line-height:1.78;}
.faq-body p{margin-bottom:10px;}
.faq-body ul{margin:10px 0 0;}
.faq-body ul li{position:relative;padding-left:16px;margin-bottom:6px;}
.faq-body ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;
  border-radius:2px;background:var(--brand-500);
}

/* ============ 提示条 ============ */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:#FFF4EC;border:1px solid #FFE0C7;border-radius:12px;
  padding:16px 18px;margin-bottom:12px;
}
.notice .n-icon{flex:0 0 auto;color:var(--accent-600);margin-top:2px;}
.notice h4{font-size:15px;margin-bottom:4px;color:#8A4A14;}
.notice p{font-size:14px;line-height:1.7;color:#7A4A22;}

/* ============ 清单条目 ============ */
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.check-list li{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--brand-500);
  border-radius:0 12px 12px 0;padding:16px 20px;
  transition:border-left-width .2s ease-out,background .2s ease-out,transform .2s ease-out;
}
.check-list li:hover{border-left-width:4px;background:#F3FBF9;transform:translateY(-2px);}
.check-list h4{font-size:16px;margin-bottom:6px;}
.check-list p{font-size:14px;color:var(--txt-2);line-height:1.7;}

/* ============ 相关条目 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.related-card{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand-500);
  border-radius:0 14px 14px 0;overflow:hidden;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.related-card img{width:100%;height:190px;object-fit:cover;}
.related-card .r-body{padding:20px 22px 22px;}
.related-card h3{font-size:18px;margin-bottom:8px;}
.related-card p{font-size:14px;color:var(--txt-2);line-height:1.7;margin-bottom:12px;}
.related-card:nth-child(2){border-left-color:var(--accent);}
.related-card:nth-child(3){border-left-color:var(--violet);}

/* ============ 底部引导条 ============ */
.cta-bar{
  position:relative;overflow:hidden;border-radius:18px;
  background:var(--ink-900);color:var(--dark-txt);
  padding:40px 42px;
}
.cta-bar::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.22;
}
.cta-bar::after{
  content:"";position:absolute;top:0;left:0;width:62%;height:100%;
  background:linear-gradient(115deg,rgba(15,211,166,.32) 0%,rgba(255,138,61,.18) 55%,rgba(14,17,22,0) 100%);
  transform:skewX(-10deg);transform-origin:top left;
}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:8px;}
.cta-inner p{color:var(--dark-txt-2);font-size:15px;max-width:44em;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:var(--dark-txt-2);margin-top:88px;}
.grad-line{height:2px;border:0;margin:0;background:linear-gradient(90deg,var(--brand-500),var(--accent));}
.footer-cols{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;padding:56px 0 40px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.75;color:var(--dark-txt-2);margin:14px 0 8px;max-width:30em;}
.footer-title{font-size:14px;font-weight:600;color:var(--dark-txt);margin-bottom:14px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--dark-txt-2);transition:color .2s ease-out;}
.footer-links a:hover{color:var(--brand-500);}
.footer-acc{display:none;padding-bottom:12px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:10px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:#8C97A5;
}
.footer-bottom a{color:#8C97A5;}
.footer-bottom a:hover{color:var(--brand-500);}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .hero-visual img{height:280px;}
}
@media (max-width:1023px){
  :root{--nav-h:60px;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  h3{font-size:20px;}
  .nav-toggle{display:grid;}
  .nav-links{
    position:fixed;left:0;right:0;top:var(--nav-h);bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:12px 20px 110px;
    transform:translateX(100%);transition:transform .28s ease-out;
    overflow-y:auto;z-index:70;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{padding:0 4px;height:52px;font-size:16px;border-radius:0;border-bottom:1px solid var(--line);}
  .nav-link.is-active::after{left:4px;right:auto;bottom:auto;top:50%;width:3px;height:22px;transform:translateY(-50%);border-radius:2px;}
  .nav-link.is-active{padding-left:16px;}
  .cmd-search{width:40px;padding:0 11px;background:#fff;}
  .cmd-search input,.cmd-search .kbd{display:none;}
  .cmd-search:focus-within{width:40px;box-shadow:none;}
  .icon-btn{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .hero-visual img{height:240px;}
  .float-card{left:14px;bottom:14px;}
  .check-grid{grid-template-columns:1fr;}
  .check-list{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .section{padding:56px 0;}
  .footer-cols{display:none;}
  .footer-acc{display:block;padding-top:26px;}
  .footer-acc .footer-links a{font-size:15px;padding:10px 0;display:block;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  .page-hero{padding:36px 0 44px;}
  .hero-lead{font-size:16px;}
  .hero-facts{gap:22px;}
  .hero-facts .val{font-size:22px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-bar{padding:30px 22px;border-radius:16px;}
  .cta-inner h2{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .section{padding:44px 0;}
  .site-footer{margin-top:60px;}
}
@media (max-width:519px){
  .brand-text{font-size:15px;}
  .brand-text .sub{display:none;}
  .hero-visual img{height:200px;}
  .float-card{position:static;left:auto;bottom:auto;margin-top:12px;}
  .hero-visual::after{border-radius:var(--r-img) var(--r-img) 0 0;}
}