/* roulang page: index */
:root{
  --brand:#0FBFA4;
  --brand-l:#23E0C0;
  --brand-d:#0A8F7C;
  --accent:#FF6B2C;
  --lime:#C9F24D;
  --ink:#0D1517;
  --bg:#F4F7F6;
  --card:#FFFFFF;
  --line:#E3EAE8;
  --t1:#12191B;
  --t2:#4E5D5E;
  --t3:#8A9899;
  --inv1:#F2F7F6;
  --inv2:#B9C7C6;
  --grad:linear-gradient(135deg,#0A8F7C 0%,#0FBFA4 45%,#23E0C0 100%);
  --r-card:20px;
  --r-img:16px;
  --r-btn:14px;
  --r-in:12px;
  --s1:0 2px 6px rgba(13,21,23,.06),0 12px 28px -14px rgba(13,21,23,.18);
  --s2:0 8px 18px rgba(13,21,23,.08),0 24px 48px -20px rgba(13,21,23,.30);
  --sidebar:248px;
  --ease:220ms ease;
}
*,*::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",sans-serif;
  font-size:16px;line-height:1.75;color:var(--t1);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
input{font:inherit}

/* ===== 容器与板块 ===== */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.section{padding:96px 0}
.section-alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:clamp(26px,3vw,34px);font-weight:700;letter-spacing:-.02em;line-height:1.25}
.section-head .lead{margin-top:12px;color:var(--t2);font-size:15px;max-width:640px}
.section-head .more{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-d);border-bottom:2px solid transparent;transition:border-color var(--ease),color var(--ease)}
.section-head .more:hover{border-color:var(--lime)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:transform var(--ease),filter var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.btn:hover{transform:translateY(-2px);filter:brightness(1.06)}
.btn:active{transform:translateY(1px)}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-primary{background:var(--grad);color:#04211C;box-shadow:0 12px 26px -14px rgba(15,191,164,.95)}
.btn-primary:hover{box-shadow:0 16px 32px -14px rgba(15,191,164,1)}
.btn-ghost{background:transparent;color:var(--inv1);border-color:rgba(255,255,255,.36)}
.btn-ghost:hover{border-color:var(--brand-l);background:rgba(255,255,255,.06)}
.btn-outline{background:#fff;color:var(--t1);border-color:var(--line)}
.btn-outline:hover{border-color:rgba(15,191,164,.6);color:var(--brand-d)}
.btn-dark{background:var(--ink);color:var(--inv1)}
.btn-dark:hover{background:#141F22}

/* ===== 标签与徽章 ===== */
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:600;color:var(--brand-d);background:rgba(15,191,164,.10);border:1px solid rgba(15,191,164,.26)}
.pill{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;font-size:13px;font-weight:600;
  color:#CBFAF0;background:rgba(15,191,164,.14);border:1px solid rgba(35,224,192,.38)}
.pill i{color:var(--lime);font-size:12px}

/* ===== 侧栏 ===== */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar);z-index:70;
  background:var(--ink);display:flex;flex-direction:column;
  padding:22px 16px 20px;transition:width var(--ease),transform var(--ease);
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 10px;border-radius:14px;color:var(--inv1)}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;background:var(--grad);
  display:grid;place-items:center;font-size:18px;font-weight:800;color:#04211C;
}
.brand-text{font-size:15px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav{margin-top:28px;display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:12px;color:var(--inv2);font-size:15px;
  transition:background var(--ease),color var(--ease);
}
.nav-item i{width:20px;font-size:17px;text-align:center}
.nav-item:hover{background:rgba(255,255,255,.06);color:var(--inv1)}
.nav-item.is-active{background:rgba(15,191,164,.08);color:#fff;font-weight:600}
.nav-item.is-active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--brand)}
.side-foot{margin-top:auto;padding-top:20px}
.side-note{margin-top:12px;text-align:center;font-size:12px;color:var(--inv2)}

/* ===== 移动端顶栏与抽屉 ===== */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:80;
  background:var(--ink);align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
}
.mobile-brand{color:var(--inv1);font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-btn{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:var(--inv1);background:rgba(255,255,255,.08);font-size:17px}
.icon-btn:hover{background:rgba(255,255,255,.16)}
.scrim{position:fixed;inset:0;background:rgba(13,21,23,.55);z-index:65;opacity:0;transition:opacity var(--ease)}
.scrim.is-open{opacity:1}

/* ===== 主体框架 ===== */
.shell{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;transition:margin var(--ease)}
main{flex:1}
.toolbar{position:sticky;top:0;z-index:50;height:56px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line)}
.toolbar-inner{height:56px;max-width:1280px;margin:0 auto;padding:0 clamp(20px,4vw,48px);display:flex;align-items:center;justify-content:space-between;gap:16px}
.crumbs{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--t2)}
.crumbs i{color:var(--brand)}
.tool-link{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--t2);padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;transition:border-color var(--ease),color var(--ease)}
.tool-link:hover{border-color:rgba(15,191,164,.55);color:var(--brand-d)}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:var(--ink);color:var(--inv1)}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.45}
.hero-veil{position:absolute;inset:0;z-index:1;background:linear-gradient(118deg,rgba(13,21,23,.94) 0%,rgba(13,21,23,.78) 46%,rgba(10,143,124,.55) 100%)}
.hero-slash{position:absolute;top:-22%;right:-12%;width:54%;height:146%;z-index:2;background:var(--grad);opacity:.16;transform:skewX(-14deg)}
.hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:48px;align-items:center;min-height:78vh;padding-top:88px;padding-bottom:64px}
.hero h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.16;letter-spacing:-.02em;margin-top:20px;max-width:16em}
.hero-sub{margin-top:18px;font-size:17px;color:#D7E4E2;max-width:32em}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-badges{margin-top:44px;display:flex;flex-wrap:wrap;gap:14px}
.badge{
  display:inline-flex;align-items:center;gap:12px;padding:12px 20px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--lime);flex:0 0 6px}
.badge .num{font-size:26px;font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;color:var(--brand-l)}
.badge .num em{font-style:normal;font-size:13px;font-weight:600;color:var(--inv2);margin-left:2px}
.badge .lab{font-size:13px;color:var(--inv2)}
.hero-panel{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-card);padding:14px;backdrop-filter:none;
}
.hero-panel img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img)}
.panel-body{padding:18px 8px 6px}
.panel-body h2{font-size:19px;font-weight:700;letter-spacing:-.01em}
.panel-list{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.panel-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--inv2)}
.panel-list li i{color:var(--brand-l);margin-top:5px;font-size:12px}

/* ===== 品牌主张条 ===== */
.claims{padding:40px 0;border-bottom:1px solid var(--line);background:#fff}
.claims-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}
.claim{display:flex;gap:14px;align-items:flex-start}
.claim i{font-size:20px;color:var(--brand-d);margin-top:4px}
.claim h3{font-size:16px;font-weight:600;letter-spacing:-.01em}
.claim p{margin-top:6px;font-size:13.5px;color:var(--t2);line-height:1.7}

/* ===== 故事区 ===== */
.story{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:56px;align-items:center}
.story-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--s1)}
.story-media img{width:100%;aspect-ratio:3/2;object-fit:cover}
.story-float{
  position:absolute;left:20px;bottom:20px;background:#fff;border-radius:999px;
  padding:10px 18px;display:inline-flex;align-items:center;gap:10px;box-shadow:var(--s2);
  transition:transform var(--ease);
}
.story-media:hover .story-float{transform:translateY(-4px)}
.story-float .num{font-size:22px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.story-float .lab{font-size:12.5px;color:var(--t2)}
.story h2{font-size:clamp(26px,3vw,34px);font-weight:700;letter-spacing:-.02em;line-height:1.28}
.story p{margin-top:18px;color:var(--t2);font-size:15.5px}
.story-list{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.story-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px}
.story-list li i{color:var(--brand);margin-top:6px;font-size:13px}

/* ===== 卡片 ===== */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--s1);display:flex;flex-direction:column;height:100%;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--s2);border-color:rgba(15,191,164,.45)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:rgba(15,191,164,.12)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-tag{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.94);color:var(--brand-d);font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card h3{font-size:19px;font-weight:600;line-height:1.45;letter-spacing:-.01em;transition:color var(--ease)}
.card:hover h3{color:var(--brand-d)}
.card p{font-size:14.5px;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;margin-top:auto;flex-wrap:wrap}
.meta .sep{width:4px;height:4px;border-radius:50%;background:var(--line)}
.card-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-d);margin-top:4px}
.card-link i{transition:transform var(--ease)}
.card:hover .card-link i{transform:translateX(4px)}

/* ===== 精选内容 ===== */
.feature-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:28px}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:28px}
.feature-grid .card-media{aspect-ratio:16/10}
.feature-side .card-media{aspect-ratio:16/9}

/* ===== 最新信息 ===== */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
.news-lead{grid-column:1 / -1}
@media (min-width:768px){
  .news-lead{flex-direction:row}
  .news-lead .card-media{flex:0 0 44%;aspect-ratio:auto;min-height:320px}
  .news-lead .card-body{justify-content:center;padding:36px}
  .news-lead h3{font-size:24px}
  .news-lead p{-webkit-line-clamp:3;font-size:15px}
}
.empty{grid-column:1 / -1;text-align:center;padding:64px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);color:var(--t2)}
.empty i{font-size:26px;color:var(--brand);display:block;margin-bottom:14px}
.empty a{color:var(--brand-d);font-weight:600;border-bottom:2px solid var(--lime)}

/* ===== 信任背书 ===== */
.trust{background:var(--ink);color:var(--inv1);padding:88px 0}
.trust h2{font-size:clamp(26px,3vw,34px);font-weight:700;letter-spacing:-.02em}
.trust .lead{margin-top:14px;color:var(--inv2);font-size:15px;max-width:640px}
.trust-badges{margin-top:40px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.trust-badge{
  padding:24px;border-radius:var(--r-card);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.trust-badge:hover{border-color:rgba(35,224,192,.5);transform:translateY(-4px);background:rgba(255,255,255,.07)}
.trust-badge .num{font-size:32px;font-weight:800;letter-spacing:-.03em;color:var(--brand-l);font-variant-numeric:tabular-nums;line-height:1.1}
.trust-badge .num em{font-style:normal;font-size:14px;color:var(--inv2);margin-left:3px}
.trust-badge h3{margin-top:12px;font-size:16px;font-weight:600}
.trust-badge p{margin-top:8px;font-size:13.5px;color:var(--inv2);line-height:1.7}
.trust-note{margin-top:36px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:24px;font-size:13.5px;color:var(--inv2)}
.trust-note span{display:inline-flex;align-items:center;gap:8px}
.trust-note i{color:var(--lime);font-size:11px}

/* ===== FAQ ===== */
.faq{max-width:900px;margin:0 auto}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq details:hover{border-color:rgba(15,191,164,.4)}
.faq details[open]{background:#F4F7F6;border-left:3px solid var(--brand);box-shadow:var(--s1)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  min-height:64px;padding:14px 24px;font-size:16.5px;font-weight:600;
}
.faq summary::-webkit-details-marker{display:none}
.faq .q-no{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;border:1.5px solid var(--brand);
  color:var(--brand-d);font-size:13px;font-weight:700;display:grid;place-items:center;font-variant-numeric:tabular-nums;
}
.faq .arrow{margin-left:auto;color:var(--t3);transition:transform var(--ease)}
.faq details[open] .arrow{transform:rotate(180deg);color:var(--brand-d)}
.faq .answer{padding:0 24px 22px 68px;font-size:15px;color:var(--t2)}

/* ===== CTA ===== */
.cta{padding:0 0 96px}
.cta-box{
  position:relative;overflow:hidden;border-radius:28px;background:var(--ink);color:var(--inv1);
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:40px;align-items:center;
  padding:56px clamp(24px,4vw,56px);
}
.cta-box::after{content:"";position:absolute;top:-40%;right:-8%;width:44%;height:180%;background:var(--grad);opacity:.18;transform:skewX(-14deg)}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{font-size:clamp(24px,2.8vw,32px);font-weight:700;letter-spacing:-.02em}
.cta-copy p{margin-top:14px;color:var(--inv2);font-size:15px;max-width:34em}
.sub-form{position:relative;z-index:2;display:flex;gap:10px;background:#fff;border-radius:999px;padding:6px;border:1px solid var(--line)}
.sub-form input{flex:1;min-width:0;height:44px;border:0;background:transparent;padding:0 20px;font-size:15px;color:var(--t1);border-radius:999px}
.sub-form input::placeholder{color:var(--t3)}
.sub-form input:focus{outline:none}
.sub-form:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(15,191,164,.18)}
.form-tip{margin-top:12px;font-size:13px;color:var(--inv2)}
.form-err{display:none;margin-top:8px;font-size:13px;color:var(--accent)}
.form-err.show{display:block}

/* ===== 页脚 ===== */
.footer{background:var(--ink);color:var(--inv2);padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.1)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;color:var(--inv1)}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:17px}
.footer-brand span{font-size:16px;font-weight:700}
.footer p{margin-top:16px;font-size:13.5px;line-height:1.8;max-width:22em}
.footer h3{color:var(--inv1);font-size:14.5px;font-weight:700;letter-spacing:.02em;margin-bottom:16px}
.footer ul{display:flex;flex-direction:column;gap:11px}
.footer ul a{font-size:13.5px;transition:color var(--ease)}
.footer ul a:hover{color:var(--brand-l)}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:13px}
.footer-bottom .tech{color:#6F7F80}

/* ===== 移动端底部 CTA ===== */
.mobile-cta{display:none}

/* ===== 响应式 ===== */
@media (min-width:992px) and (max-width:1199px){
  :root{--sidebar:88px}
  .sidebar{padding:20px 12px;align-items:center}
  .brand{padding:6px 0;justify-content:center}
  .brand-text,.nav-label,.side-note,.btn-text{display:none}
  .nav{width:100%}
  .nav-item{justify-content:center;padding:0}
  .side-foot{width:100%}
  .side-foot .btn{padding:0;width:46px}
  .shell{margin-left:88px}
}

@media (max-width:991px){
  .sidebar{width:282px;transform:translateX(-100%);box-shadow:var(--s2)}
  .sidebar.is-open{transform:translateX(0)}
  .mobile-bar{display:flex}
  .shell{margin-left:0;padding-top:60px}
  .hero-inner{grid-template-columns:1fr;min-height:auto;padding-top:64px;padding-bottom:56px;gap:36px}
  .section{padding:64px 0}
  .claims-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .story{grid-template-columns:1fr;gap:32px}
  .feature-grid{grid-template-columns:1fr}
  .feature-side{grid-template-rows:auto;grid-template-columns:1fr}
  .trust-badges{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-box{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:767px){
  body{font-size:15.5px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15.5px}
  .hero-badges{gap:10px;margin-top:32px}
  .badge{padding:10px 16px}
  .badge .num{font-size:22px}
  .news-grid{grid-template-columns:1fr}
  .card{border-radius:16px}
  .card-media{border-radius:0}
  .story-media{border-radius:16px}
  .faq .answer{padding-left:24px}
  .cta-box{border-radius:20px;padding:36px 22px}
  .sub-form{flex-direction:column;border-radius:18px;background:transparent;border:0;padding:0;gap:12px}
  .sub-form input{background:#fff;border:1px solid var(--line);border-radius:12px;width:100%;padding:0 18px}
  .sub-form:focus-within{box-shadow:none;border-color:transparent}
  .sub-form button{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .trust-badges{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
}

@media (max-width:560px){
  .mobile-cta{
    display:block;position:fixed;left:0;right:0;bottom:0;z-index:75;
    padding:10px 16px 14px;background:rgba(13,21,23,.96);
  }
  .shell{padding-bottom:76px}
  .claims-grid{grid-template-columns:1fr}
  .hero-actions .btn{flex:1 1 100%}
}

/* Foundation 覆盖 */
.grid-x.grid-margin-x{margin-left:-14px;margin-right:-14px}
.grid-x.grid-margin-x>.cell{padding-left:14px;padding-right:14px;width:auto}

/* roulang page: category1 */
:root{
  --primary:#0FBFA4;
  --primary-light:#23E0C0;
  --primary-dark:#0A8F7C;
  --accent:#FF6B2C;
  --lime:#C9F24D;
  --ink:#0D1517;
  --bg:#F4F7F6;
  --card:#FFFFFF;
  --line:#E3EAE8;
  --text:#12191B;
  --text-2:#4E5D5E;
  --text-3:#8A9899;
  --on-dark:#F2F7F6;
  --on-dark-2:#B9C7C6;
  --grad:linear-gradient(135deg,#0A8F7C 0%,#0FBFA4 45%,#23E0C0 100%);
  --r-card:20px;
  --r-img:16px;
  --r-btn:14px;
  --r-input:12px;
  --s1:0 2px 6px rgba(13,21,23,.06), 0 12px 28px -14px rgba(13,21,23,.18);
  --s2:0 6px 14px rgba(13,21,23,.08), 0 22px 44px -18px rgba(13,21,23,.28);
  --sidebar:248px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
img{max-width:100%;display:block;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
::selection{background:rgba(15,191,164,.25);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

/* ---------- App shell ---------- */
.app{min-height:100vh;}

.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar);
  background:var(--ink);
  color:var(--on-dark);
  padding:26px 18px 22px;
  display:flex;
  flex-direction:column;
  z-index:60;
  transition:transform .24s ease;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 8px 22px;
  border-bottom:1px solid rgba(255,255,255,.08);
  margin-bottom:20px;
}
.brand-mark{
  width:42px;height:42px;
  flex:0 0 42px;
  border-radius:14px;
  background:var(--grad);
  color:#06211C;
  font-weight:800;
  font-size:19px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15.5px;font-weight:700;color:#fff;letter-spacing:-.01em;}
.brand-text span{font-size:12px;color:var(--on-dark-2);letter-spacing:.06em;}

.nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 12px;
  border-radius:12px;
  color:var(--on-dark-2);
  font-size:15px;
  position:relative;
  transition:background .2s ease,color .2s ease;
}
.nav-item i{width:20px;text-align:center;font-size:16px;}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.is-active{
  background:rgba(15,191,164,.08);
  color:#fff;
  font-weight:600;
}
.nav-item.is-active::before{
  content:"";
  position:absolute;left:0;top:9px;bottom:9px;
  width:3px;border-radius:3px;
  background:var(--primary);
}

.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);}
.side-note{font-size:12.5px;color:var(--on-dark-2);line-height:1.7;margin-bottom:14px;}
.side-btn{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:var(--r-btn);
  background:var(--grad);
  color:#06211C;font-weight:700;font-size:14.5px;
  transition:filter .2s ease,transform .2s ease;
}
.side-btn:hover{filter:brightness(1.06);transform:translateY(-2px);}
.side-btn:active{transform:translateY(1px);}

.drawer-mask{
  position:fixed;inset:0;
  background:rgba(13,21,23,.5);
  opacity:0;visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;
  z-index:55;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

.content{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}

.topbar{
  position:sticky;top:0;z-index:40;
  height:56px;
  display:flex;align-items:center;gap:16px;
  padding:0 32px;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);}
.crumb a:hover{color:var(--primary-dark);}
.crumb .sep{color:#C3CFCD;}
.crumb strong{color:var(--text-2);font-weight:600;}
.topbar-tools{margin-left:auto;display:flex;align-items:center;gap:10px;}
.top-search{
  display:flex;align-items:center;gap:8px;
  height:36px;padding:0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  color:var(--text-3);
  font-size:13.5px;
  min-width:220px;
}
.top-search i{color:var(--primary-dark);}
.top-search span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:58px;
  background:var(--ink);
  color:#fff;z-index:70;
  align-items:center;gap:12px;
  padding:0 16px;
}
.mobile-bar .burger{
  width:40px;height:40px;border-radius:12px;
  background:rgba(255,255,255,.08);border:0;color:#fff;font-size:17px;
  display:flex;align-items:center;justify-content:center;
}
.mobile-bar .m-brand{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:700;letter-spacing:-.01em;}
.mobile-bar .m-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;font-size:15px;}
.mobile-bar .m-cta{
  margin-left:auto;height:38px;padding:0 16px;border-radius:12px;
  background:var(--grad);color:#06211C;font-weight:700;font-size:13.5px;
  display:flex;align-items:center;
}

/* ---------- Container ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}
main{flex:1 1 auto;}
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-line{border-top:1px solid var(--line);}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.sec-head h2{font-size:32px;font-weight:700;letter-spacing:-.02em;line-height:1.3;}
.sec-head p{font-size:14.5px;color:var(--text-2);margin-top:10px;max-width:620px;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--primary-dark);text-transform:uppercase;
  margin-bottom:14px;
}
.sec-kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);}
.link-more{font-size:14.5px;font-weight:600;color:var(--primary-dark);border-bottom:2px solid transparent;padding-bottom:2px;}
.link-more:hover{border-bottom-color:var(--lime);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:52px;padding:0 26px;
  border-radius:var(--r-btn);
  font-size:15.5px;font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:filter .2s ease,transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn i{font-size:15px;}
.btn-primary{background:var(--grad);color:#06211C;box-shadow:var(--s1);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--s2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35);}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.6);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{color:var(--primary-dark);border-color:var(--primary);transform:translateY(-2px);}
.btn-accent{background:#fff;color:var(--accent);border-color:var(--accent);}
.btn-accent:hover{background:var(--accent);color:#fff;transform:translateY(-2px);}
.btn-sm{height:44px;padding:0 20px;font-size:14.5px;}
.btn-xs{height:36px;padding:0 16px;font-size:13.5px;border-radius:12px;}
.btn-block{width:100%;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:#08191B;
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    linear-gradient(120deg,rgba(8,25,27,.92) 0%,rgba(10,143,124,.62) 52%,rgba(15,191,164,.28) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  z-index:0;
}
.cat-hero .container{position:relative;z-index:1;padding-top:78px;padding-bottom:64px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:9px;
  height:34px;padding:0 16px;border-radius:999px;
  border:1px solid rgba(35,224,192,.55);
  background:rgba(35,224,192,.12);
  color:#D7FFF6;font-size:13px;font-weight:600;
}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);}
.cat-hero h1{
  font-size:48px;font-weight:800;letter-spacing:-.02em;
  color:#fff;line-height:1.16;
  margin:22px 0 16px;
  max-width:820px;
}
.cat-hero .hero-desc{
  color:#CFE6E2;font-size:17px;line-height:1.8;max-width:700px;
}
.hero-anchors{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.anchor-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;border-radius:999px;
  border:1px solid rgba(255,255,255,.32);
  color:#EAFBF7;font-size:14px;font-weight:600;
  background:rgba(255,255,255,.06);
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
}
.anchor-pill:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}
.anchor-pill.is-active{background:var(--primary);border-color:var(--primary);color:#06211C;}
.anchor-pill.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:#0D1517;}

.hero-meta{
  margin-top:34px;
  display:flex;flex-wrap:wrap;gap:28px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.14);
}
.hero-meta div{display:flex;flex-direction:column;}
.hero-meta b{
  font-size:24px;font-weight:800;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.hero-meta span{font-size:13px;color:#A9C6C2;}

/* ---------- Cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}

.entry-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  box-shadow:var(--s1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--s2);border-color:rgba(15,191,164,.45);}
.card-media{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#0A8F7C,#23E0C0);}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.card-media .tag{
  position:absolute;left:14px;top:14px;
  height:28px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.92);color:var(--primary-dark);
  font-size:12.5px;font-weight:700;
  display:inline-flex;align-items:center;gap:6px;
}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:20px;font-weight:600;letter-spacing:-.01em;line-height:1.45;}
.entry-card:hover .card-body h3{color:var(--primary-dark);}
.card-body p{font-size:15px;color:var(--text-2);line-height:1.75;}
.card-meta{
  margin-top:auto;padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;gap:14px;
  font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.card-meta i{color:var(--primary);margin-right:5px;}
.card-link{font-size:14px;font-weight:700;color:var(--primary-dark);display:inline-flex;align-items:center;gap:6px;}
.card-link:hover{color:var(--accent);}

/* Plain info cards (no image) */
.info-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 24px;
  box-shadow:var(--s1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;gap:12px;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--s2);border-color:rgba(15,191,164,.45);}
.icon-badge{
  width:46px;height:46px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(15,191,164,.1);
  color:var(--primary-dark);font-size:19px;
}
.info-card h3{font-size:19px;font-weight:600;line-height:1.45;}
.info-card p{font-size:14.5px;color:var(--text-2);}
.info-card ul{display:flex;flex-direction:column;gap:8px;margin-top:4px;}
.info-card ul li{font-size:14px;color:var(--text-2);display:flex;gap:9px;}
.info-card ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);margin-top:9px;flex:0 0 6px;}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px;}
.step{
  display:flex;gap:20px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.step-num{
  flex:0 0 44px;width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(15,191,164,.5);
  color:var(--primary-dark);font-weight:800;font-size:16px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--text-2);}
.step .step-note{font-size:13px;color:var(--text-3);margin-top:8px;}

/* Badge band */
.badge-band{
  background:var(--ink);
  color:var(--on-dark);
  position:relative;overflow:hidden;
}
.badge-band::before{
  content:"";position:absolute;left:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,191,164,.28),rgba(15,191,164,0) 70%);
}
.badge-band .container{position:relative;z-index:1;padding-top:56px;padding-bottom:56px;}
.badge-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.badge{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:999px;
  padding:18px 24px 18px 22px;
  display:flex;align-items:center;gap:14px;
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);flex:0 0 6px;}
.badge b{
  font-size:30px;font-weight:800;color:#fff;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;line-height:1;
}
.badge b em{font-size:14px;font-style:normal;font-weight:600;color:var(--primary-light);margin-left:3px;}
.badge span{font-size:13px;color:var(--on-dark-2);display:block;margin-top:6px;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  min-height:64px;
  display:flex;align-items:center;gap:18px;
  padding:18px 4px 18px 0;
  font-size:17px;font-weight:600;
  transition:background .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary-dark);}
.faq-num{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--primary);
  color:var(--primary-dark);
  font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.faq-item summary .arrow{margin-left:auto;color:var(--text-3);transition:transform .22s ease;}
.faq-item[open] summary{color:var(--primary-dark);background:#F4F7F6;padding-left:14px;border-left:3px solid var(--primary);}
.faq-item[open] summary .arrow{transform:rotate(180deg);color:var(--primary);}
.faq-answer{padding:6px 4px 26px 46px;font-size:15px;color:var(--text-2);line-height:1.85;}

/* CTA */
.cta-band{
  background:linear-gradient(120deg,#0A8F7C 0%,#0FBFA4 55%,#23E0C0 100%);
  border-radius:24px;
  padding:54px 52px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  color:#06211C;
  box-shadow:var(--s1);
}
.cta-band h2{font-size:30px;font-weight:800;letter-spacing:-.02em;line-height:1.3;}
.cta-band p{font-size:15px;margin-top:12px;max-width:620px;color:#083B33;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-primary{background:#0D1517;color:#EAFFF9;}
.cta-band .btn-primary:hover{filter:brightness(1.12);}
.cta-band .btn-outline{background:transparent;border-color:#0D1517;color:#0D1517;}
.cta-band .btn-outline:hover{background:#0D1517;color:#EAFFF9;}

/* ---------- Footer ---------- */
.footer{background:var(--ink);color:var(--on-dark);margin-top:auto;}
.footer .container{padding-top:64px;padding-bottom:28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:16px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:12px;font-size:17px;}
.footer p{font-size:14px;color:var(--on-dark-2);line-height:1.85;max-width:340px;}
.footer h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer ul{display:flex;flex-direction:column;gap:11px;}
.footer ul a{font-size:14px;color:var(--on-dark-2);}
.footer ul a:hover{color:var(--primary-light);}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--on-dark-2);
}
.footer-bottom .tech{color:#7E9492;font-variant-numeric:tabular-nums;}

/* ---------- Responsive ---------- */
@media screen and (max-width:1199px){
  :root{--sidebar:88px;}
  .sidebar{padding:20px 12px;}
  .brand{justify-content:center;padding-left:0;padding-right:0;}
  .brand-text{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-label{display:none;}
  .nav-item.is-active::before{left:-12px;}
  .side-note{display:none;}
  .side-btn{padding:0;}
  .side-btn span{display:none;}
  .cat-hero h1{font-size:42px;}
}
@media screen and (max-width:991px){
  :root{--sidebar:248px;}
  .sidebar{transform:translateX(-100%);box-shadow:var(--s2);}
  .sidebar.is-open{transform:translateX(0);}
  .sidebar .brand{justify-content:flex-start;padding-left:8px;}
  .sidebar .brand-text{display:flex;}
  .sidebar .nav-item{justify-content:flex-start;padding:0 12px;}
  .sidebar .nav-label{display:inline;}
  .sidebar .side-note{display:block;}
  .sidebar .side-btn span{display:inline;}
  .content{margin-left:0;padding-top:58px;}
  .topbar{display:none;}
  .mobile-bar{display:flex;}
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  .cat-hero .container{padding-top:54px;padding-bottom:48px;}
  .cat-hero h1{font-size:36px;}
  .grid-2,.grid-3,.grid-4,.badge-row,.steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:42px 32px;}
  .cta-band h2{font-size:26px;}
  .sec-head h2{font-size:27px;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .grid-2,.grid-3,.grid-4,.badge-row,.steps{grid-template-columns:1fr;}
  .cat-hero h1{font-size:32px;letter-spacing:-.015em;}
  .cat-hero .hero-desc{font-size:15.5px;}
  .hero-anchors{gap:10px;}
  .anchor-pill{height:38px;padding:0 15px;font-size:13.5px;}
  .hero-meta{gap:20px;}
  .hero-meta b{font-size:21px;}
  .sec-head h2{font-size:24px;}
  .entry-card,.info-card{border-radius:16px;}
  .card-body{padding:20px;}
  .card-body h3{font-size:18px;}
  .badge{padding:16px 18px;}
  .badge b{font-size:26px;}
  .cta-band{border-radius:18px;padding:34px 24px;}
  .cta-band h2{font-size:23px;}
  .cta-band .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-answer{padding-left:0;}
  .faq-item[open] summary{padding-left:12px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer p{max-width:none;}
}
@media screen and (max-width:520px){
  .cat-hero h1{font-size:28px;}
  .hero-tag{font-size:12px;padding:0 13px;}
  .mobile-bar{padding:0 12px;}
  .mobile-bar .m-cta{padding:0 12px;font-size:12.5px;}
  .step{gap:14px;}
  .step-num{flex:0 0 38px;width:38px;height:38px;font-size:14px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: article */
:root{
  --brand:#0FBFA4;
  --brand-light:#23E0C0;
  --brand-dark:#0A8F7C;
  --orange:#FF6B2C;
  --lime:#C9F24D;
  --ink:#0D1517;
  --bg:#F4F7F6;
  --card:#FFFFFF;
  --line:#E3EAE8;
  --t1:#12191B;
  --t2:#4E5D5E;
  --t3:#8A9899;
  --inv:#F2F7F6;
  --inv2:#B9C7C6;
  --grad:linear-gradient(135deg,#0A8F7C 0%,#0FBFA4 45%,#23E0C0 100%);
  --s1:0 2px 6px rgba(13,21,23,.06), 0 12px 28px -14px rgba(13,21,23,.18);
  --s2:0 6px 14px rgba(13,21,23,.08), 0 22px 44px -18px rgba(13,21,23,.26);
  --r-card:20px;
  --r-img:16px;
  --r-btn:14px;
  --r-input:12px;
  --side:248px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--t1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px;}

/* ---------- App shell ---------- */
.app{min-height:100vh;}
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side);
  background:var(--ink);
  color:var(--inv);
  display:flex;
  flex-direction:column;
  padding:26px 16px 22px;
  z-index:70;
  transition:transform .24s ease;
}
.side-brand{display:flex;align-items:center;gap:10px;padding:4px 8px 22px;color:var(--inv);}
.brand-mark{
  flex:0 0 auto;
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--grad);
  color:#04211C;
  font-weight:800;
  font-size:18px;
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-.01em;}
.nav{display:flex;flex-direction:column;gap:6px;margin-top:8px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:44px;
  padding:0 12px;
  border-radius:12px;
  color:var(--inv2);
  font-size:15px;
  transition:background .2s ease,color .2s ease;
}
.nav-item i{width:20px;text-align:center;font-size:16px;}
.nav-item:hover{background:rgba(255,255,255,.06);color:var(--inv);}
.nav-item.is-active{background:rgba(15,191,164,.08);color:#FFFFFF;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--brand);
}
.side-spacer{flex:1 1 auto;}
.side-cta{padding-top:18px;border-top:1px solid rgba(255,255,255,.08);}
.side-note{font-size:12px;color:rgba(185,199,198,.75);line-height:1.6;padding:14px 4px 0;}

.app-main{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column;}

/* ---------- Topbar ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  height:56px;
  display:flex;align-items:center;gap:16px;
  padding:0 24px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
}
.drawer-btn{
  display:none;
  width:38px;height:38px;
  border:1px solid var(--line);
  background:#FFFFFF;
  border-radius:12px;
  color:var(--t1);
  cursor:pointer;
}
.mobile-brand{display:none;font-weight:700;font-size:15px;}
.topbar-title{font-size:14px;color:var(--t2);display:flex;align-items:center;gap:8px;}
.topbar-title .dot{width:6px;height:6px;border-radius:50%;background:var(--lime);display:inline-block;}
.topbar-search{margin-left:auto;display:flex;align-items:center;gap:8px;}
.topbar-search input{
  width:220px;
  height:36px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#F8FAF9;
  color:var(--t1);
  font-size:13px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.topbar-search input::placeholder{color:var(--t3);}
.topbar-search input:focus{outline:none;border-color:var(--brand);background:#FFFFFF;box-shadow:0 0 0 4px rgba(15,191,164,.18);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#04211C;box-shadow:var(--s1);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--s2);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--inv);border-color:rgba(255,255,255,.32);}
.btn-ghost:hover{border-color:var(--brand-light);color:#FFFFFF;}
.btn-line{background:#FFFFFF;color:var(--t1);border-color:var(--line);}
.btn-line:hover{border-color:rgba(15,191,164,.45);color:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--s1);}
.btn-dark{background:var(--ink);color:var(--inv);}
.btn-dark:hover{transform:translateY(-2px);box-shadow:var(--s2);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- Article shell ---------- */
.article-shell{max-width:1180px;padding-top:28px;padding-bottom:8px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t3);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--t2);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand-dark);text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:4px;}
.breadcrumb .sep{color:#C3CDCB;}
.breadcrumb .current{color:var(--t2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.article-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  padding:36px 40px 32px;
}
.article-head{max-width:860px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;
  border-radius:999px;
  background:rgba(15,191,164,.1);
  border:1px solid rgba(15,191,164,.35);
  color:var(--brand-dark);
  font-size:13px;font-weight:600;
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);}
.article-head h1{
  margin:18px 0 16px;
  font-size:40px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.28;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  font-size:13px;color:var(--t3);
}
.meta-row .sep{color:#C3CDCB;}
.meta-row .num{font-variant-numeric:tabular-nums;color:var(--t2);font-weight:600;}

.article-cover{
  margin:28px 0 8px;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:3/2;
  background:linear-gradient(135deg,#E7F6F2,#F4F7F6);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}
.cover-caption{font-size:12px;color:var(--t3);margin-top:10px;}

.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:48px;
  margin-top:32px;
}
.article-body{
  max-width:820px;
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;}
.article-body h2{font-size:27px;font-weight:700;margin:48px 0 16px;padding-left:14px;border-left:4px solid var(--brand);}
.article-body h3{font-size:20px;font-weight:600;margin:38px 0 12px;color:var(--t1);}
.article-body h4{font-size:17px;font-weight:600;margin:28px 0 10px;color:var(--t2);}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.3em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:8px 0;}
.article-body blockquote{
  margin:28px 0;
  padding:16px 22px;
  border-left:3px solid var(--brand);
  background:#EFF8F6;
  border-radius:0 12px 12px 0;
  color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:26px auto;border:1px solid var(--line);}
.article-body a{color:var(--brand-dark);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand);text-decoration-color:var(--lime);text-decoration-thickness:2px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;display:block;overflow-x:auto;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:#F1F7F5;font-weight:600;}
.article-body code{font-family:var(--mono);font-size:14px;background:#EFF3F2;border-radius:6px;padding:2px 6px;}
.article-body pre{background:#F1F5F4;border-radius:12px;padding:16px 18px;overflow-x:auto;margin:24px 0;}
.article-body pre code{background:none;padding:0;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

.article-empty{
  margin-top:32px;
  padding:56px 24px;
  text-align:center;
  background:#F8FAF9;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
}
.article-empty i{font-size:30px;color:var(--brand);}
.article-empty h2{font-size:22px;font-weight:700;margin:16px 0 8px;}
.article-empty p{color:var(--t2);font-size:14px;margin-bottom:22px;}

/* ---------- TOC ---------- */
.toc-wrap{display:none;}
.toc{
  position:sticky;top:84px;
  border-left:2px solid var(--line);
  padding-left:16px;
}
.toc h2{font-size:13px;font-weight:700;color:var(--t3);letter-spacing:.08em;margin-bottom:12px;}
.toc a{
  display:block;
  font-size:13px;
  color:var(--t2);
  padding:6px 0;
  line-height:1.5;
  border-bottom:1px solid transparent;
  transition:color .2s ease,padding-left .2s ease;
}
.toc a.is-sub{padding-left:12px;color:var(--t3);}
.toc a:hover{color:var(--brand-dark);}
.toc a.is-active{color:var(--brand-dark);font-weight:600;padding-left:6px;border-left:2px solid var(--brand);margin-left:-18px;padding-left:16px;}

/* ---------- Tags & share ---------- */
.article-foot{
  margin-top:44px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:18px;
  align-items:center;justify-content:space-between;
}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;
  height:32px;padding:0 14px;
  border-radius:999px;
  background:#F4F7F6;
  border:1px solid var(--line);
  font-size:13px;color:var(--t2);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.tag:hover{border-color:rgba(15,191,164,.45);color:var(--brand-dark);background:#EFF8F6;}
.share-row{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--t3);}
.share-row a{
  display:inline-flex;align-items:center;gap:6px;
  height:34px;padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#FFFFFF;color:var(--t2);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.share-row a:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px);}

/* ---------- Related ---------- */
.section{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:30px;font-weight:700;}
.section-head p{color:var(--t2);font-size:14px;margin-top:8px;}
.text-link{font-size:14px;font-weight:600;color:var(--brand-dark);display:inline-flex;align-items:center;gap:6px;}
.text-link:hover{text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:4px;}

.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.related-card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--s1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--s2);border-color:rgba(15,191,164,.45);}
.related-card .thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#E7F6F2,#F4F7F6);}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .body{padding:20px 22px 24px;}
.related-card h3{font-size:18px;font-weight:600;margin-bottom:10px;transition:color .2s ease;}
.related-card:hover h3{color:var(--brand-dark);}
.related-card p{font-size:14px;color:var(--t2);line-height:1.7;}
.related-card .meta{font-size:12px;color:var(--t3);margin-top:14px;display:flex;gap:10px;align-items:center;}
.related-card:nth-child(2){margin-top:32px;}
.related-card:nth-child(3){grid-column:1 / 2;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink);
  border-radius:24px;
  padding:40px 44px;
  color:var(--inv);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,191,164,.35),rgba(15,191,164,0) 70%);
}
.cta-band h2{font-size:26px;font-weight:700;margin-bottom:10px;}
.cta-band p{color:var(--inv2);font-size:14px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2;}

/* ---------- Badge strip ---------- */
.badge-strip{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 18px;
  border-radius:999px;
  background:#FFFFFF;
  border:1px solid var(--line);
  font-size:13px;color:var(--t2);
  box-shadow:var(--s1);
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);}
.badge b{font-size:18px;font-weight:800;color:var(--t1);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.badge b em{color:var(--orange);font-style:normal;font-size:13px;margin-left:2px;font-weight:700;}

/* ---------- Footer ---------- */
.footer{background:var(--ink);color:var(--inv);margin-top:auto;padding:56px 0 24px;}
.footer-grid{border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:36px;}
.footer-col{margin-bottom:28px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px;}
.footer p{color:var(--inv2);font-size:14px;line-height:1.75;max-width:340px;}
.footer h3{font-size:14px;font-weight:700;color:#FFFFFF;margin-bottom:16px;}
.footer ul li{margin-bottom:10px;}
.footer ul a{font-size:14px;color:var(--inv2);transition:color .2s ease;}
.footer ul a:hover{color:var(--brand-light);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding-top:22px;font-size:13px;color:var(--inv2);
}
.footer-bottom .tech{color:rgba(185,199,198,.7);}

/* ---------- Drawer mask & mobile CTA ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,21,23,.55);
  opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:65;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-cta{display:none;}

/* ---------- Responsive ---------- */
@media (min-width:1200px){
  .toc-wrap{display:block;}
  .article-layout{grid-template-columns:minmax(0,820px) 200px;}
}
@media (max-width:1199px) and (min-width:992px){
  :root{--side:88px;}
  .sidebar{padding:24px 12px;align-items:center;}
  .side-brand{padding:0 0 20px;}
  .brand-text{display:none;}
  .nav{width:100%;}
  .nav-item{justify-content:center;padding:0;gap:0;}
  .nav-label{display:none;}
  .side-cta{width:100%;}
  .side-cta .btn{padding:0 8px;font-size:0;}
  .side-cta .btn i{font-size:16px;}
  .side-note{display:none;}
}
@media (max-width:991px){
  :root{--side:0px;}
  .sidebar{
    transform:translateX(-102%);
    width:272px;
    box-shadow:0 0 40px rgba(0,0,0,.35);
  }
  .sidebar.is-open{transform:translateX(0);}
  .app-main{margin-left:0;}
  .drawer-btn{display:inline-flex;align-items:center;justify-content:center;}
  .mobile-brand{display:block;}
  .topbar{padding:0 16px;gap:12px;}
  .topbar-title{display:none;}
  .topbar-search input{width:150px;}
  .article-card{padding:26px 22px 24px;}
  .article-head h1{font-size:32px;}
  .related-grid{grid-template-columns:1fr;}
  .related-card:nth-child(2){margin-top:0;}
  .related-card:nth-child(3){grid-column:auto;}
  .section{padding:52px 0;}
  .section-head h2{font-size:24px;}
  .cta-band{padding:32px 26px;border-radius:20px;}
  .cta-band h2{font-size:22px;}
}
@media (max-width:767px){
  body{padding-bottom:66px;font-size:15px;}
  .container{padding:0 16px;}
  .topbar-search{display:none;}
  .article-card{border-radius:16px;padding:22px 18px 20px;}
  .article-head h1{font-size:28px;}
  .article-body{font-size:15.5px;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .badge-strip{gap:10px;}
  .badge{padding:8px 14px;}
  .badge b{font-size:16px;}
  .mobile-cta{
    display:flex;align-items:center;justify-content:center;gap:8px;
    position:fixed;left:16px;right:16px;bottom:14px;height:52px;
    border-radius:var(--r-btn);
    background:var(--grad);color:#04211C;font-weight:700;font-size:15px;
    box-shadow:var(--s2);z-index:55;
  }
  .footer{padding-top:44px;}
}
@media (max-width:520px){
  .article-head h1{font-size:25px;}
  .meta-row{font-size:12px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .share-row{width:100%;}
}

/* roulang page: category2 */
:root{
  --c-primary:#0FBFA4;
  --c-primary-light:#23E0C0;
  --c-primary-dark:#0A8F7C;
  --c-accent:#FF6B2C;
  --c-lime:#C9F24D;
  --c-ink:#0D1517;
  --c-bg:#F4F7F6;
  --c-card:#FFFFFF;
  --c-line:#E3EAE8;
  --t-main:#12191B;
  --t-sub:#4E5D5E;
  --t-weak:#8A9899;
  --rev:#F2F7F6;
  --rev-sub:#B9C7C6;
  --grad:linear-gradient(135deg,#0A8F7C 0%,#0FBFA4 45%,#23E0C0 100%);
  --s1:0 2px 6px rgba(13,21,23,.06),0 12px 28px -14px rgba(13,21,23,.18);
  --s2:0 6px 14px rgba(13,21,23,.08),0 22px 44px -18px rgba(13,21,23,.28);
  --r-card:20px;
  --r-img:16px;
  --r-btn:14px;
  --r-input:12px;
  --sidebar-w:248px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-main);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:800;letter-spacing:-.02em;}
h1{font-size:clamp(30px,4.4vw,50px);}
h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;}
h3{font-size:19px;font-weight:600;}
h4{font-size:16px;font-weight:600;}
button,input,select,textarea{font-family:var(--font);font-size:16px;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- App Shell ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-ink);color:var(--rev);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  transition:transform .24s ease,width .24s ease;
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 20px;border-bottom:1px solid rgba(255,255,255,.08);}
.brand-mark{
  flex:0 0 auto;width:36px;height:36px;border-radius:11px;
  background:var(--grad);color:#06231e;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;letter-spacing:0;
}
.brand-text{font-size:15px;font-weight:700;line-height:1.3;color:var(--rev);}
.brand-short{display:none;font-size:15px;font-weight:700;color:var(--rev);}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:18px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:12px;
  color:var(--rev-sub);font-size:15px;
  transition:background-color .2s ease,color .2s ease;
}
.nav-item i{width:20px;text-align:center;font-size:16px;}
.nav-item:hover{background:rgba(255,255,255,.06);color:var(--rev);}
.nav-item.is-active{background:rgba(15,191,164,.12);color:#ffffff;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--c-primary);
}
.side-foot{margin-top:auto;padding:16px;border-radius:16px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);}
.side-foot h4{font-size:14px;color:var(--rev);margin-bottom:6px;}
.side-foot p{font-size:13px;line-height:1.6;color:var(--rev-sub);margin-bottom:12px;}
.side-foot .btn{width:100%;}

.main-wrap{margin-left:var(--sidebar-w);min-height:100vh;transition:margin-left .24s ease;}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:40;height:56px;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;padding:0 32px;
  background:rgba(244,247,246,.96);
  border-bottom:1px solid var(--c-line);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t-weak);}
.crumb a{color:var(--t-sub);}
.crumb a:hover{color:var(--c-primary-dark);}
.crumb .sep{color:#C6D1CF;}
.crumb .now{color:var(--t-main);font-weight:600;}
.tb-search{position:relative;display:flex;align-items:center;}
.tb-search i{position:absolute;left:14px;color:var(--t-weak);font-size:14px;pointer-events:none;}
.tb-search input{
  width:280px;height:38px;padding:0 14px 0 38px;
  border:1px solid var(--c-line);border-radius:var(--r-input);
  background:#fff;color:var(--t-main);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.tb-search input::placeholder{color:var(--t-weak);}
.tb-search input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(15,191,164,.18);}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:55;
  align-items:center;gap:12px;padding:0 16px;
  background:var(--c-ink);color:var(--rev);
}
.mobile-bar .brand-mark{width:32px;height:32px;border-radius:10px;font-size:15px;}
.mobile-brand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;margin-right:auto;}
.menu-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);color:var(--rev);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,21,23,.5);z-index:59;
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 容器与板块 ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}
.section{padding:64px 0;}
.section:first-of-type{padding-top:40px;}
.section-divider{border-top:1px solid var(--c-line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--c-primary-dark);
  text-transform:none;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c-lime);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.sec-head p{color:var(--t-sub);font-size:15px;max-width:640px;margin:10px 0 0;}
.lead{color:var(--t-sub);font-size:16px;}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;margin-top:24px;border-radius:24px;overflow:hidden;
  padding:56px 48px;
  background-color:var(--c-ink);
  background-image:
    linear-gradient(115deg,rgba(13,21,23,.86) 0%,rgba(13,21,23,.62) 46%,rgba(10,143,124,.42) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  color:var(--rev);
  box-shadow:var(--s1);
}
.hero-cat::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:var(--grad);
}
.hero-cat .eyebrow{color:var(--c-primary-light);}
.hero-cat .eyebrow::before{background:var(--c-lime);}
.hero-cat h1{color:#ffffff;margin:14px 0 14px;max-width:820px;}
.hero-sub{font-size:17px;color:#DCE7E5;max-width:640px;margin-bottom:20px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  color:#E7F0EE;font-size:13px;
}
.chip i{font-size:12px;color:var(--c-lime);}

/* ---------- 图文行 ---------- */
.media-rows{display:flex;flex-direction:column;gap:56px;}
.media-row{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;}
.media-row.is-reverse{grid-template-columns:7fr 5fr;}
.media-row.is-reverse .media-figure{order:2;}
.media-row.is-reverse .media-body{order:1;}
.media-figure{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--s1);
  aspect-ratio:16/9;background:var(--c-primary-dark);
}
.media-figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.media-row:hover .media-figure img{transform:scale(1.03);}
.media-figure::after{content:"";position:absolute;inset:0;border-radius:var(--r-img);box-shadow:inset 0 0 0 1px rgba(255,255,255,.22);}
.media-body h3{margin-bottom:12px;font-size:20px;}
.media-body p{color:var(--t-sub);font-size:15.5px;margin-bottom:14px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--c-primary-dark);
  border-bottom:2px solid transparent;
  padding-bottom:2px;
}
.text-link:hover{border-bottom-color:var(--c-lime);color:var(--c-primary-dark);}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 双栏要点列表 ---------- */
.keylist{border-top:1px solid var(--c-line);margin-top:8px;}
.keylist-item{
  display:grid;grid-template-columns:260px 1fr;gap:32px;
  padding:22px 0;border-bottom:1px solid var(--c-line);
  transition:background-color .2s ease;
}
.keylist-item:hover{background:rgba(15,191,164,.04);}
.keylist-item h3{font-size:17px;display:flex;align-items:center;gap:10px;}
.keylist-item h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c-primary);flex:0 0 auto;}
.keylist-item p{color:var(--t-sub);font-size:15px;margin:0;}

/* ---------- 数据徽章带 ---------- */
.stat-band{
  position:relative;overflow:hidden;
  border-radius:24px;padding:40px 40px;
  background:var(--c-ink);
  background-image:linear-gradient(135deg,rgba(15,191,164,.18) 0%,rgba(13,21,23,0) 62%);
  color:var(--rev);
  box-shadow:var(--s1);
}
.stat-band h2{color:#ffffff;margin-bottom:8px;}
.stat-band .band-sub{color:var(--rev-sub);font-size:15px;margin-bottom:28px;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-item{
  padding:20px;border-radius:16px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
}
.stat-value{display:flex;align-items:baseline;gap:6px;color:#ffffff;}
.stat-value .num{font-size:34px;font-weight:800;letter-spacing:-.02em;line-height:1;}
.stat-value span{font-size:14px;color:var(--rev-sub);}
.stat-label{margin-top:10px;font-size:13px;color:var(--rev-sub);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:24px;padding:40px;
  background:var(--c-card);border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--s1);
}
.cta-band::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{color:var(--t-sub);font-size:15px;max-width:560px;}
.cta-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s ease,color .2s ease,background-color .2s ease,border-color .2s ease,filter .2s ease,box-shadow .2s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--grad);color:#06231e;box-shadow:var(--s1);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--s2);color:#06231e;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--t-main);border-color:var(--c-line);}
.btn-ghost:hover{border-color:rgba(15,191,164,.55);color:var(--c-primary-dark);transform:translateY(-2px);box-shadow:var(--s1);}
.btn-ghost:active{transform:translateY(1px);}
.btn-outline-dark{background:transparent;color:#ffffff;border-color:rgba(255,255,255,.34);}
.btn-outline-dark:hover{border-color:var(--c-primary-light);color:#ffffff;transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.footer{background:var(--c-ink);color:var(--rev-sub);margin-top:88px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--rev);font-weight:700;font-size:16px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:16px;}
.footer p{font-size:14px;line-height:1.7;color:var(--rev-sub);max-width:340px;}
.footer h3{font-size:15px;color:#ffffff;margin-bottom:16px;font-weight:600;}
.footer li{margin-bottom:10px;}
.footer li a{font-size:14px;color:var(--rev-sub);}
.footer li a:hover{color:var(--c-primary-light);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8B9B9A;
}
.footer-bottom .tech{color:#77878,6;color:#778786;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  :root{--sidebar-w:88px;}
  .sidebar{padding:22px 12px 18px;align-items:center;}
  .brand{padding:6px 0 18px;justify-content:center;width:100%;}
  .brand-text{display:none;}
  .brand-short{display:block;font-size:12px;line-height:1.2;text-align:center;}
  .nav{width:100%;align-items:center;}
  .nav-item{justify-content:center;padding:0 6px;}
  .nav-label{display:none;}
  .side-foot{padding:12px 8px;text-align:center;}
  .side-foot p{display:none;}
  .side-foot h4{font-size:12px;margin-bottom:8px;}
  .side-foot .btn{padding:0 8px;font-size:13px;}
}
@media screen and (max-width:991px){
  .sidebar{transform:translateX(-100%);width:280px;align-items:stretch;padding:24px 16px 20px;}
  .sidebar.is-open{transform:translateX(0);box-shadow:0 0 60px rgba(0,0,0,.4);}
  .brand{justify-content:flex-start;}
  .brand-text{display:block;}
  .brand-short{display:none;}
  .nav{align-items:stretch;}
  .nav-item{justify-content:flex-start;padding:0 12px;}
  .nav-label{display:inline;}
  .side-foot{text-align:left;}
  .side-foot p{display:block;}
  .main-wrap{margin-left:0;padding-top:60px;}
  .mobile-bar{display:flex;}
  .topbar{display:none;}
  .container{padding:0 20px;}
  .hero-cat{padding:40px 26px;border-radius:20px;margin-top:16px;}
  .section{padding:48px 0;}
  .media-row,.media-row.is-reverse{grid-template-columns:1fr;gap:22px;}
  .media-row.is-reverse .media-figure{order:0;}
  .media-row.is-reverse .media-body{order:0;}
  .media-rows{gap:40px;}
  .keylist-item{grid-template-columns:1fr;gap:8px;padding:18px 0;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:520px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .hero-cat{padding:32px 20px;border-radius:16px;}
  .hero-sub{font-size:15.5px;}
  .chip{height:30px;padding:0 12px;font-size:12px;}
  .section{padding:40px 0;}
  .media-body h3{font-size:18px;}
  .stat-band{padding:28px 20px;border-radius:16px;}
  .stat-grid{grid-template-columns:1fr;gap:14px;}
  .stat-item{padding:16px;}
  .stat-value .num{font-size:28px;}
  .cta-band{border-radius:16px;}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer{padding:48px 0 24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}