/* roulang page: index */
:root{
  --brand:#1557D6;
  --brand-dark:#0E3E9E;
  --brand-soft:#E8F0FE;
  --mint:#00BFA6;
  --gold:#F5A623;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --line:#E2E9F4;
  --text:#0F1B2D;
  --text-2:#51617A;
  --text-3:#8A98AD;
  --r-card:16px;
  --r-btn:12px;
  --shadow-card:0 1px 2px rgba(15,27,45,.04), 0 10px 26px -14px rgba(21,87,214,.20);
  --shadow-hover:0 16px 34px -14px rgba(21,87,214,.30);
  --sec-y:88px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Inter",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.2px}
p{margin:0}
ul,ol,dl,dd,dt{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.shell{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.sec{padding:var(--sec-y) 0}
.sec-alt{background:#fff}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px)}
.sec-head .sec-desc{color:var(--text-2);font-size:15px;margin-top:10px;max-width:640px}
.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:5px 14px;margin-bottom:14px}
.sec-link{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;transition:gap .2s ease,color .2s ease}
.sec-link:hover{gap:10px;color:var(--brand-dark)}

/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 10px 26px -20px rgba(15,27,45,.55)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--brand);display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px -10px rgba(21,87,214,.9)}
.brand-text{font-size:18px;font-weight:800;letter-spacing:.1px;color:var(--text);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{position:relative;padding:10px 14px;font-size:15px;font-weight:500;color:var(--text-2);border-radius:9px;transition:color .2s ease,background .2s ease}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);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)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:9px;height:40px;min-width:220px;padding:0 16px;border:1px solid var(--line);border-radius:999px;background:#F7FAFF;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.search-box:hover{border-color:#C9DBF9}
.search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(21,87,214,.12)}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;line-height:40px}
.search-box input::placeholder{color:var(--text-3)}
.search-box svg{flex-shrink:0;color:var(--text-3)}
.nav-login{font-size:14px;font-weight:600;color:var(--text-2);padding:8px 6px;border-radius:8px;transition:color .2s ease}
.nav-login:hover{color:var(--brand)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;transition:border-color .2s ease,background .2s ease}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.nav-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 24px 20px}
.nav-drawer.is-open{display:block}
.drawer-link{display:block;padding:13px 4px;font-size:15px;font-weight:500;color:var(--text-2);border-bottom:1px solid var(--line)}
.drawer-link.is-active{color:var(--brand);font-weight:700}
.drawer-cta{margin-top:16px;width:100%}

/* ===== buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -12px rgba(21,87,214,.85)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 16px 28px -14px rgba(21,87,214,.85)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9DBF9}
.btn-ghost:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.btn-ghost:active{transform:translateY(0)}
.btn-soft{background:var(--brand-soft);color:var(--brand-dark)}
.btn-soft:hover{background:#DAE7FD;transform:translateY(-2px)}
.btn-pill{border-radius:999px;height:40px;padding:0 20px;font-size:14px}
.btn:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

.chip{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);font-size:12.5px;font-weight:600}
.chip-mint{background:rgba(0,191,166,.12);color:#048A78}
.chip-gold{background:rgba(245,166,35,.14);color:#9A6400}

/* ===== hero ===== */
.hero{padding:72px 0 56px;background:linear-gradient(180deg,#FFFFFF 0%,#F4F7FC 100%)}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-dark);background:var(--brand-soft);border-radius:999px;padding:6px 15px}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block}
.hero h1{font-size:clamp(28px,4.2vw,44px);line-height:1.22;font-weight:800;margin:20px 0 18px;letter-spacing:-.6px}
.hero h1 em{font-style:normal;color:var(--brand);position:relative}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:8px;background:rgba(0,191,166,.22);border-radius:4px;z-index:-1}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.hero-actions .btn{height:50px;padding:0 26px;font-size:16px}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:var(--text-2)}
.trust-row li{display:flex;align-items:center;gap:7px}
.trust-row li+li::before{content:"";width:4px;height:4px;border-radius:50%;background:#C7D3E6;margin-right:12px}
.trust-row b{color:var(--text);font-weight:700}
.stars{color:var(--gold);letter-spacing:1px;font-size:13px}

.hero-visual{position:relative}
.hero-visual .hero-img{border-radius:20px;overflow:hidden;box-shadow:0 30px 60px -34px rgba(21,87,214,.55);border:1px solid #fff}
.hero-visual .hero-img img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#DEE7F5}
.float-card{position:absolute;left:-18px;bottom:-20px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-card);padding:14px 18px;display:flex;align-items:center;gap:12px;max-width:250px}
.float-card .fc-num{font-size:22px;font-weight:800;color:var(--brand);line-height:1}
.float-card .fc-label{font-size:12.5px;color:var(--text-2);line-height:1.5}
.hero-badge{position:absolute;right:-12px;top:22px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--mint);box-shadow:var(--shadow-card)}

/* ===== bento features ===== */
.bento{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:minmax(150px,auto);gap:20px}
.bento-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;display:flex;flex-direction:column;gap:12px}
.bento-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(21,87,214,.28)}
.bento-card h3{font-size:19px}
.bento-card p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.bento-icon{width:44px;height:44px;border-radius:13px;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand)}
.bento-icon.mint{background:rgba(0,191,166,.12);color:#048A78}
.bento-icon.gold{background:rgba(245,166,35,.14);color:#A56A00}
.bento-lg{grid-column:1 / span 2;grid-row:1 / span 2;background:#fff;justify-content:space-between;padding:32px}
.bento-lg h3{font-size:24px}
.bento-lg .bento-img{margin-top:8px;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.bento-lg .bento-img img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#DEE7F5}
.bento-a{grid-column:3 / span 1;grid-row:1 / span 1}
.bento-b{grid-column:4 / span 1;grid-row:1 / span 1}
.bento-c{grid-column:3 / span 2;grid-row:2 / span 1}
.bento-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto}
.bento-list span{font-size:12.5px;font-weight:600;color:var(--text-2);background:#F4F7FC;border:1px solid var(--line);border-radius:999px;padding:4px 12px}

/* ===== carousel ===== */
.carousel-sec{padding-top:0}
.carousel-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 24px 26px;scrollbar-width:none}
.carousel-track::-webkit-scrollbar{display:none}
.shot-card{flex:0 0 44%;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease}
.shot-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#DEE7F5}
.shot-card figcaption{padding:18px 20px 20px}
.shot-card figcaption h3{font-size:16.5px;margin-bottom:6px}
.shot-card figcaption p{font-size:13.5px;color:var(--text-2);line-height:1.7}
.carousel-arrows{display:flex;gap:10px}
.arrow-btn{width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center;color:var(--text-2);transition:border-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease}
.arrow-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.arrow-btn:active{transform:translateY(0)}
.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:6px}
.dot{width:8px;height:8px;border-radius:999px;background:#C9DBF9;padding:0;transition:width .25s ease,background .25s ease}
.dot:hover{background:#9FBCEE}
.dot.is-active{width:24px;background:var(--brand)}

/* ===== system requirements ===== */
.req-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.req-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.req-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(21,87,214,.28)}
.req-head{display:flex;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.req-head h3{font-size:17px}
.req-head .req-tag{font-size:12px;font-weight:600;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:3px 10px;margin-left:auto}
.req-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px dashed var(--line);font-size:14px}
.req-row:last-child{border-bottom:0;padding-bottom:0}
.req-row dt{color:var(--text-3)}
.req-row dd{color:var(--text);font-weight:600;text-align:right}

/* ===== reviews wall ===== */
.wall{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.wall-col{display:flex;flex-direction:column;gap:20px}
.wall-col-2{margin-top:34px}
.wall-col-3{margin-top:16px}
.review{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease}
.review:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:40px;height:40px;border-radius:50%;background:#E8EDF6;display:grid;place-items:center;font-size:14px;font-weight:700;color:var(--text-2);flex-shrink:0}
.review-name{font-size:14.5px;font-weight:600}
.review-device{font-size:12.5px;color:var(--text-3)}
.review .stars{display:block;margin-bottom:10px}
.review p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.review .review-foot{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);display:flex;justify-content:space-between;gap:10px}

/* ===== download CTA ===== */
.download-band{background:#0E1B2F;border-radius:24px;padding:52px 48px;color:#fff;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:44px;align-items:center}
.download-band h2{font-size:clamp(22px,2.6vw,30px);color:#fff;margin-bottom:14px}
.download-band p{color:#B9C6DA;font-size:15px;max-width:520px}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 18px}
.dl-actions .btn-primary:hover{background:#1E63E0}
.btn-outline-light{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.28)}
.btn-outline-light:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.6);transform:translateY(-2px)}
.dl-note{font-size:12.5px;color:#8B9CB4;display:flex;flex-wrap:wrap;gap:6px 14px}
.dl-qr{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:24px;display:flex;align-items:center;gap:18px}
.qr-svg{width:112px;height:112px;border-radius:12px;flex-shrink:0;background:#fff;padding:4px}
.dl-qr p{font-size:14px;color:#D6DFEC;line-height:1.7}
.dl-qr b{display:block;color:#fff;font-size:15px;margin-bottom:4px}

/* ===== news ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(21,87,214,.28)}
.news-thumb img{width:100%;aspect-ratio:3/2;object-fit:cover;background:#DEE7F5}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:16.5px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:51px}
.news-desc{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}
.news-time{font-size:12.5px;color:var(--text-3)}
.news-arrow{margin-left:auto;color:var(--brand);font-weight:700;transition:transform .2s ease}
.news-card:hover .news-arrow{transform:translateX(4px)}
.empty-state{background:#fff;border:1px dashed #C9DBF9;border-radius:var(--r-card);padding:56px 24px;text-align:center}
.empty-state .empty-icon{width:56px;height:56px;border-radius:50%;background:var(--brand-soft);display:grid;place-items:center;margin:0 auto 16px;color:var(--brand)}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:18px}

/* ===== faq ===== */
.faq-list{display:grid;gap:12px;max-width:880px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease}
.faq-item[open]{border-color:rgba(21,87,214,.32);box-shadow:inset 3px 0 0 var(--brand),var(--shadow-card)}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:16.5px;font-weight:600;transition:color .2s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-icon{width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;flex-shrink:0;transition:transform .25s ease}
.faq-item[open] .faq-icon{transform:rotate(180deg)}
.faq-answer{background:#F7FAFF;border-top:1px solid var(--line);padding:18px 22px 20px;font-size:14.8px;color:var(--text-2);line-height:1.85}

/* ===== footer ===== */
.site-footer{background:#0E1B2F;color:#C6D2E4;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px}
.footer-brand .footer-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-logo .brand-mark{box-shadow:none}
.footer-brand p{font-size:13.8px;line-height:1.85;color:#93A4BE;max-width:320px}
.footer-col h4{font-size:14.5px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:13.8px;color:#A9B8CE;transition:color .2s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:#8496B0}

/* ===== back to top ===== */
.back-top{position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-card);display:grid;place-items:center;color:var(--brand);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .25s ease,transform .25s ease,visibility .25s ease;z-index:70}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ===== responsive ===== */
@media (max-width:1279px){
  .hero-grid{gap:36px}
  .bento{grid-template-columns:repeat(3,minmax(0,1fr))}
  .bento-lg{grid-column:1 / span 2;grid-row:1 / span 2}
  .bento-a{grid-column:3 / span 1;grid-row:1 / span 1}
  .bento-b{grid-column:3 / span 1;grid-row:2 / span 1}
  .bento-c{grid-column:1 / span 3;grid-row:3 / span 1}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}
}

@media (max-width:1023px){
  :root{--sec-y:64px}
  .nav-links{display:none}
  .search-box{display:none}
  .nav-login{display:none}
  .nav-toggle{display:inline-flex}
  .hero{padding:52px 0 44px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-sub{max-width:none}
  .float-card{left:12px;bottom:-18px}
  .bento{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bento-lg{grid-column:1 / span 2;grid-row:auto}
  .bento-a,.bento-b,.bento-c{grid-column:auto;grid-row:auto}
  .shot-card{flex:0 0 62%}
  .req-grid{grid-template-columns:1fr}
  .wall{grid-template-columns:repeat(2,minmax(0,1fr))}
  .wall-col-3{margin-top:0}
  .wall-col-2{margin-top:28px}
  .download-band{grid-template-columns:1fr;padding:40px 32px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
}

@media (max-width:767px){
  :root{--sec-y:48px}
  .shell{padding-left:20px;padding-right:20px}
  .nav-wrap{height:64px;gap:12px}
  .brand-text{font-size:16.5px}
  .hero h1{font-size:clamp(26px,7vw,32px)}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{height:46px;font-size:15px;padding:0 20px;flex:1 1 auto}
  .hero-actions{width:100%}
  .trust-row{font-size:13px;gap:8px 12px}
  .trust-row li+li::before{display:none}
  .float-card{position:static;margin-top:16px;max-width:none}
  .hero-badge{right:12px;top:12px}
  .bento{grid-template-columns:1fr}
  .bento-lg{grid-column:auto}
  .shot-card{flex:0 0 84%}
  .carousel-track{padding:4px 20px 22px}
  .wall{grid-template-columns:1fr}
  .wall-col-2,.wall-col-3{margin-top:0}
  .news-grid{grid-template-columns:1fr}
  .download-band{padding:32px 24px;border-radius:20px}
  .dl-qr{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .back-top{right:16px;bottom:18px}
}

@media (max-width:519px){
  .nav-right .btn-pill{display:none}
  .footer-grid{grid-template-columns:1fr}
  .sec-head h2{font-size:21px}
}

/* roulang page: article */
:root{
  --brand:#1557D6;
  --brand-dark:#0E3E9E;
  --brand-soft:#E8F0FE;
  --accent:#00BFA6;
  --accent-dark:#00806F;
  --star:#F5A623;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --line:#E2E9F4;
  --text:#0F1B2D;
  --text-2:#51617A;
  --text-3:#8A98AD;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-card:0 1px 2px rgba(15,27,45,.04), 0 10px 26px -14px rgba(21,87,214,.20);
  --shadow-hover:0 16px 34px -14px rgba(21,87,214,.30);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Inter",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -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,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

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

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(15,27,45,.45)}
.nav-inner{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:.2px;color:var(--text);white-space:nowrap}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--brand);color:#fff;
  display:grid;place-items:center;flex:none;
  box-shadow:0 10px 20px -12px rgba(21,87,214,.75);
}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);font-weight:500;
  padding:22px 0;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{position:relative}
.nav-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-3)}
.nav-search input{
  height:38px;width:200px;border-radius:999px;border:1px solid var(--line);
  background:#F7FAFF;padding:0 16px 0 38px;font-size:14px;color:var(--text);
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:hover{border-color:#C9D8F0}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(21,87,214,.12)}
.nav-login{font-size:15px;color:var(--text-2);font-weight:500;transition:color .2s ease}
.nav-login:hover{color:var(--brand)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--text-2);place-items:center;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(21,87,214,.4);color:var(--brand)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 24px -16px rgba(21,87,214,.85)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 16px 30px -14px rgba(21,87,214,.55)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--text)}
.btn-outline:hover{border-color:rgba(21,87,214,.4);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.btn-soft{background:var(--brand-soft);color:var(--brand)}
.btn-soft:hover{background:#DBE8FD;transform:translateY(-2px)}
.btn-on-dark{background:#fff;color:var(--brand)}
.btn-on-dark:hover{background:#EAF1FE;transform:translateY(-2px)}
.btn-ghost-on-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost-on-dark:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);
}
.badge-accent{background:rgba(0,191,166,.13);color:var(--accent-dark)}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--text-2)}

/* 面包屑 */
.crumb-bar{padding:22px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#BFCBE0}
.breadcrumb .current{color:var(--text-3);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 文章布局 */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;
  padding:26px 0 76px;align-items:start;
}
.article-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:34px 38px 40px;
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:8px}
.article-head h1{
  font-size:clamp(26px,3.4vw,38px);line-height:1.3;font-weight:800;
  letter-spacing:-.2px;margin:16px 0 14px;color:var(--text);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:14px;color:var(--text-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7D3E6}
.article-cover{
  margin-top:26px;border-radius:var(--radius-card);overflow:hidden;
  aspect-ratio:16/9;background:#E9EFF9;
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* 正文排版 */
.article-body{font-size:16.5px;line-height:1.95;color:#1C2B44;padding-top:26px;max-width:100%}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:15px 0;color:#26374F}
.article-body h2{
  font-size:22px;line-height:1.5;font-weight:700;color:var(--text);
  margin:38px 0 14px;padding-left:14px;border-left:4px solid var(--brand);border-radius:2px;
}
.article-body h3{font-size:18px;line-height:1.6;font-weight:600;color:var(--text);margin:26px 0 10px}
.article-body h4{font-size:16px;font-weight:700;color:var(--text);margin:20px 0 8px}
.article-body ul,.article-body ol{margin:14px 0;padding-left:22px}
.article-body ul li,.article-body ol li{margin:8px 0;color:#26374F;position:relative}
.article-body ul li::before{
  content:"";position:absolute;left:-16px;top:.78em;width:6px;height:6px;border-radius:50%;
  background:var(--accent);
}
.article-body ol{list-style:decimal;padding-left:24px}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body img{border-radius:14px;margin:20px 0;width:100%;height:auto}
.article-body a{color:var(--brand);font-weight:500;border-bottom:1px solid rgba(21,87,214,.35)}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.article-body strong{color:var(--text);font-weight:700}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;background:#F7FAFF;border-left:3px solid var(--accent);
  border-radius:12px;color:var(--text-2);
}
.article-body blockquote p{margin:6px 0;color:var(--text-2)}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
  background:#F1F5FC;color:#0E3E9E;padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:#0F1B2D;color:#E6EEFB;padding:18px 20px;border-radius:14px;overflow-x:auto;
  font-size:14px;line-height:1.7;margin:20px 0;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;background:#fff}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:#F7FAFF;font-weight:700;color:var(--text)}
.article-body td{color:var(--text-2)}

/* 空态 */
.notice-empty{
  margin-top:26px;padding:52px 24px;border:1px dashed #CBD8EC;border-radius:var(--radius-card);
  background:#FBFDFF;text-align:center;
}
.notice-empty .ico{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
}
.notice-empty h3{font-size:19px;font-weight:700;margin-bottom:8px}
.notice-empty p{font-size:14.5px;color:var(--text-2);margin-bottom:20px}

/* 侧栏 */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:92px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:6px}
.side-card .side-desc{font-size:13.5px;color:var(--text-2);line-height:1.75;margin-bottom:14px}
.side-list{margin:12px 0 16px;border-top:1px solid var(--line)}
.side-list div{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;
}
.side-list dt{color:var(--text-2)}
.side-list dd{color:var(--text);font-weight:700}
.side-links li a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--text-2);
  transition:color .2s ease,padding .2s ease;
}
.side-links li:last-child a{border-bottom:none}
.side-links li a:hover{color:var(--brand);padding-left:4px}
.side-card .btn{width:100%}

/* 相关推荐 */
.related-section{padding:0 0 76px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{font-size:clamp(21px,2.4vw,26px);font-weight:700;letter-spacing:-.2px}
.section-head p{font-size:14px;color:var(--text-2);margin-top:6px}
.section-head .more{font-size:14.5px;color:var(--brand);font-weight:600;white-space:nowrap}
.section-head .more:hover{color:var(--brand-dark)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.info-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(21,87,214,.28)}
.info-card .thumb{aspect-ratio:3/2;background:#E9EFF9;overflow:hidden}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.info-card:hover .thumb img{transform:scale(1.03)}
.info-card .body{display:flex;flex-direction:column;flex:1;padding:20px 20px 18px}
.info-card h3{font-size:17px;font-weight:700;line-height:1.55;margin-bottom:8px}
.info-card .excerpt{
  font-size:14px;color:var(--text-2);line-height:1.75;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card .foot{
  display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;
  border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}
.info-card .foot .arrow{margin-left:auto;color:var(--brand);font-weight:700}

/* CTA 区 */
.cta-band{background:var(--brand);border-radius:20px;overflow:hidden;position:relative}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:32px;padding:40px 42px;
}
.cta-inner h2{font-size:clamp(21px,2.5vw,27px);font-weight:800;color:#fff;line-height:1.45;letter-spacing:-.2px}
.cta-inner p{font-size:14.5px;color:rgba(255,255,255,.86);margin-top:10px;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none}
.cta-foot{padding:0 0 80px}

/* 页脚 */
.site-footer{background:#0E1B2F;color:#C8D5E8;margin-top:8px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:34px;
  padding-top:58px;padding-bottom:40px;
}
.footer-logo{
  display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:16px;
}
.footer-brand p{font-size:14px;line-height:1.85;color:#93A6C2;max-width:34ch}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:#93A6C2;transition:color .2s ease}
.footer-col ul li a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:20px;padding-bottom:26px;
  font-size:13px;color:#7C8FAD;
}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--brand);
  display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow-card);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s ease, transform .25s ease, visibility .25s ease, border-color .2s ease;
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:rgba(21,87,214,.45);transform:translateY(-2px)}

/* 响应式 */
@media (max-width:1180px){
  .nav-search input{width:158px}
  .nav-links{gap:20px}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:1fr;gap:28px;padding:22px 0 60px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 300px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr 1fr;gap:30px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:900px){
  .nav-links{
    position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);padding:8px 20px 16px;display:none;
    box-shadow:0 18px 30px -22px rgba(15,27,45,.45);
  }
  .nav-links.is-open{display:flex}
  .nav-link{padding:14px 0;border-bottom:1px solid #EFF4FB}
  .nav-link::after{display:none}
  .nav-link:last-child{border-bottom:none}
  .nav-search{display:none}
  .nav-login{display:none}
  .nav-toggle{display:grid}
  .nav-inner{gap:14px}
  .nav-actions .btn-sm{display:none}
}
@media (max-width:767px){
  .shell{padding:0 20px}
  .article-panel{padding:24px 20px 30px;border-radius:14px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:20px;margin-top:30px}
  .article-body h3{font-size:17px}
  .article-side{flex-direction:column}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding-top:44px}
  .footer-brand{grid-column:1 / -1}
  .cta-inner{padding:32px 24px}
  .cta-band{border-radius:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .related-section{padding-bottom:56px}
  .cta-foot{padding-bottom:60px}
  .breadcrumb .current{max-width:100%;white-space:normal}
}
@media (max-width:520px){
  .brand{font-size:16.5px}
  .brand-mark{width:32px;height:32px;border-radius:10px}
  .article-head h1{font-size:24px}
  .footer-grid{grid-template-columns:1fr}
  .btn{height:44px;padding:0 18px;font-size:14.5px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .to-top{right:16px;bottom:18px}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
  .btn:hover,.info-card:hover,.to-top:hover{transform:none}
}

/* roulang page: category1 */
:root{
    --primary:#1557D6;
    --primary-dark:#0E3E9E;
    --primary-soft:#E8F0FE;
    --accent:#00BFA6;
    --accent-soft:#E4F8F5;
    --star:#F5A623;
    --bg:#F4F7FC;
    --card:#FFFFFF;
    --line:#E2E9F4;
    --line-strong:#D8E4F7;
    --text:#0F1B2D;
    --text-2:#51617A;
    --text-3:#6B7C96;
    --radius:16px;
    --radius-btn:12px;
    --radius-pill:999px;
    --shadow-sm:0 1px 2px rgba(15,27,45,.04), 0 10px 26px -14px rgba(21,87,214,.20);
    --shadow-lg:0 16px 34px -14px rgba(21,87,214,.30);
    --shell:1200px;
    --gutter:24px;
  }

  *,*::before,*::after{box-sizing:border-box}

  body{
    margin:0;
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Inter",sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }

  img{display:block;max-width:100%;background:#EEF3FB}
  h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  a{color:var(--primary);text-decoration:none;transition:color .2s ease}
  a:hover{color:var(--primary-dark)}
  button{font:inherit;cursor:pointer}
  input{font:inherit}

  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

  .shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 var(--gutter)}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:#fff;border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease;
  }
  .site-header.is-scrolled{box-shadow:0 10px 26px -22px rgba(15,27,45,.55)}
  .nav-inner{display:flex;align-items:center;gap:18px;min-height:68px}

  .brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--text);letter-spacing:.2px}
  .brand:hover{color:var(--primary)}
  .brand-mark{
    width:36px;height:36px;flex:0 0 36px;border-radius:11px;
    background:var(--primary);color:#fff;display:grid;place-items:center;
  }

  .nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
  .nav-link{
    position:relative;display:inline-block;padding:8px 12px;border-radius:10px;
    font-size:15px;font-weight:500;color:var(--text-2);white-space:nowrap;
    transition:color .2s ease,background-color .2s ease;
  }
  .nav-link:hover{color:var(--primary);background:var(--primary-soft)}
  .nav-link.is-active{color:var(--primary);font-weight:600}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;
    border-radius:2px;background:var(--primary);
  }

  .nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
  .nav-search{position:relative;display:block}
  .nav-search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--text-3);pointer-events:none}
  .nav-search input{
    width:216px;height:40px;border-radius:var(--radius-pill);
    border:1px solid var(--line);background:#F7FAFF;color:var(--text);
    padding:0 16px 0 38px;font-size:14px;transition:border-color .2s,box-shadow .2s,background-color .2s;
  }
  .nav-search input::placeholder{color:var(--text-3)}
  .nav-search input:focus{outline:none;background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(21,87,214,.14)}

  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
    background:#fff;color:var(--text);align-items:center;justify-content:center;
  }
  .nav-toggle:hover{border-color:var(--primary);color:var(--primary)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
    transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
  }
  .btn-pill{border-radius:var(--radius-pill)}
  .btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 24px -16px rgba(21,87,214,.95)}
  .btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(21,87,214,1)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px -14px rgba(21,87,214,.9)}
  .btn-outline{background:#fff;color:var(--primary);border-color:#C9DBF8}
  .btn-outline:hover{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-2px)}
  .btn-outline:active{transform:translateY(0)}
  .btn-ghost{background:#fff;color:var(--text-2);border-color:var(--line)}
  .btn-ghost:hover{color:var(--primary);border-color:#C9DBF8;background:var(--primary-soft);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(0)}
  .btn-lg{height:52px;padding:0 28px;font-size:16px}
  .btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

  /* ---------- 面包屑 ---------- */
  .crumb{padding:18px 0 0;font-size:13px;color:var(--text-3)}
  .crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
  .crumb li{display:flex;align-items:center;gap:8px}
  .crumb li+li::before{content:"/";color:#B9C6DA}
  .crumb a{color:var(--text-3)}
  .crumb a:hover{color:var(--primary)}
  .crumb .is-current{color:var(--text-2)}

  /* ---------- 通用板块 ---------- */
  .section{padding:80px 0}
  .section-head{max-width:760px;margin-bottom:40px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;margin-bottom:16px;
    border-radius:var(--radius-pill);background:var(--primary-soft);color:var(--primary);
    font-size:13px;font-weight:600;letter-spacing:.4px;
  }
  .eyebrow.is-accent{background:var(--accent-soft);color:#008375}
  .section-title{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;letter-spacing:.2px}
  .section-desc{margin-top:12px;font-size:15px;color:var(--text-2)}

  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow-sm);
    transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(21,87,214,.28)}
  .card:hover .media-card__img img{transform:scale(1.03)}

  /* ---------- 分类横幅 ---------- */
  .page-banner{background:#fff;border-bottom:1px solid var(--line)}
  .banner-grid{
    display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
    padding:48px 0 72px;
  }
  .banner-title{font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.4px}
  .banner-title span{color:var(--primary)}
  .banner-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:34em}
  .banner-body{margin-top:14px;font-size:15px;color:var(--text-2);max-width:36em}
  .banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .trust-bar{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:24px;
    font-size:13px;color:var(--text-3);
  }
  .trust-bar .dot{width:4px;height:4px;border-radius:50%;background:#C3D1E6}
  .banner-media{position:relative}
  .banner-media img{
    width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);
    box-shadow:0 24px 46px -28px rgba(15,27,45,.45);
  }
  .float-card{
    position:absolute;left:-18px;bottom:-24px;display:flex;align-items:center;gap:12px;
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 16px;
    box-shadow:var(--shadow-lg);
  }
  .float-card strong{font-size:18px;color:var(--primary)}
  .float-card small{display:block;font-size:12px;color:var(--text-3);line-height:1.5}

  .point-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px}
  .point-card{padding:20px 22px;border-bottom:3px solid var(--primary-soft)}
  .point-card h3{font-size:16px;font-weight:600;margin-bottom:6px}
  .point-card p{font-size:14px;color:var(--text-2)}

  /* ---------- 时间线 ---------- */
  .timeline{margin-top:44px}
  .timeline-item{
    position:relative;display:grid;grid-template-columns:56px 1fr;gap:20px;padding-bottom:30px;
  }
  .timeline-item:last-child{padding-bottom:0}
  .timeline-item::before{
    content:"";position:absolute;left:27px;top:60px;bottom:4px;width:2px;background:var(--line-strong);
  }
  .timeline-item:last-child::before{display:none}
  .timeline-num{
    width:56px;height:56px;border-radius:50%;display:grid;place-items:center;
    background:var(--primary-soft);border:1px solid #C9DBF8;color:var(--primary);
    font-size:18px;font-weight:700;
  }
  .timeline-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow-sm)}
  .timeline-body h3{font-size:18px;font-weight:600;margin-bottom:6px}
  .timeline-body p{font-size:15px;color:var(--text-2)}

  /* ---------- 图卡网格 ---------- */
  .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .media-card{display:flex;flex-direction:column;overflow:hidden;height:100%}
  .media-card__img{overflow:hidden;border-radius:var(--radius) var(--radius) 0 0}
  .media-card__img img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .35s ease}
  .media-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
  .media-card__body h3{font-size:17px;font-weight:600;line-height:1.5}
  .media-card__body p{font-size:14px;color:var(--text-2);flex:1 1 auto}
  .media-card__tag{
    align-self:flex-start;padding:3px 10px;border-radius:var(--radius-pill);
    background:var(--accent-soft);color:#00806F;font-size:12px;font-weight:600;
  }

  /* ---------- 环境要求 ---------- */
  .req-card{padding:24px}
  .req-card__head{display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line)}
  .req-card__head .ico{
    width:36px;height:36px;border-radius:10px;background:var(--primary-soft);color:var(--primary);
    display:grid;place-items:center;font-weight:700;font-size:13px;
  }
  .req-card__head h3{font-size:17px;font-weight:600}
  .req-list{margin-top:6px}
  .req-list div{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:42px;border-bottom:1px solid #EEF3FB;font-size:14px;
  }
  .req-list div:last-child{border-bottom:0}
  .req-list dt{color:var(--text-3)}
  .req-list dd{color:var(--text);font-weight:600;text-align:right}

  /* ---------- FAQ ---------- */
  .faq-list{max-width:900px}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;
    overflow:hidden;transition:border-color .22s,box-shadow .22s;
  }
  .faq-item:hover{border-color:#C9DBF8}
  .faq-item[open]{border-color:rgba(21,87,214,.4);box-shadow:var(--shadow-sm)}
  .faq-item summary{
    display:flex;align-items:center;gap:16px;justify-content:space-between;
    padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);
    list-style:none;cursor:pointer;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"";flex:0 0 10px;width:10px;height:10px;margin-right:4px;
    border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
    transform:rotate(45deg);transition:transform .22s ease,border-color .22s ease;
  }
  .faq-item[open] summary{box-shadow:inset 3px 0 0 var(--primary);color:var(--primary)}
  .faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--primary)}
  .faq-body{
    margin:0 16px 16px;padding:16px 18px;border-radius:12px;background:#F7FAFF;
    font-size:15px;color:var(--text-2);
  }

  /* ---------- CTA ---------- */
  .cta-panel{
    background:#fff;border:1px solid var(--line);border-radius:20px;
    box-shadow:var(--shadow-sm);padding:40px;
    display:grid;grid-template-columns:1.6fr 1fr;gap:40px;align-items:center;
  }
  .cta-panel h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35}
  .cta-panel .lead{margin-top:12px;font-size:15px;color:var(--text-2);max-width:34em}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .cta-note{margin-top:18px;font-size:13px;color:var(--text-3)}
  .qr-wrap{justify-self:end;text-align:center}
  .qr-box{
    width:168px;height:168px;border-radius:16px;border:1px dashed #BBD0F4;background:#F7FAFF;
    display:grid;place-items:center;color:var(--text-3);font-size:13px;line-height:1.7;padding:16px;
  }
  .qr-wrap p{margin-top:10px;font-size:13px;color:var(--text-3)}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0E1B2F;color:#C7D3E6;margin-top:24px;padding-top:56px}
  .footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px}
  .footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;margin-bottom:14px}
  .footer-brand p{font-size:14px;color:#9BAAC2;max-width:32em}
  .footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
  .footer-col li{margin-bottom:10px}
  .footer-col a{color:#9BAAC2;font-size:14px}
  .footer-col a:hover{color:#fff}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:13px;color:#8A98AD;
  }

  /* ---------- 返回顶部 ---------- */
  .to-top{
    position:fixed;right:22px;bottom:26px;z-index:70;
    width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
    background:#fff;color:var(--primary);display:grid;place-items:center;
    box-shadow:var(--shadow-sm);opacity:0;visibility:hidden;transform:translateY(8px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s;
  }
  .to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
  .to-top:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    :root{--gutter:20px}
    .nav-search input{width:170px}
    .banner-grid{gap:40px}
  }

  @media (max-width:1023px){
    .section{padding:64px 0}
    .nav-toggle{display:inline-flex}
    .nav-search{display:none}
    .nav-links{
      display:none;position:absolute;left:0;right:0;top:100%;
      flex-direction:column;align-items:stretch;gap:4px;
      background:#fff;border-bottom:1px solid var(--line);
      padding:12px 20px 18px;box-shadow:0 24px 34px -28px rgba(15,27,45,.6);
    }
    .site-header.is-open .nav-links{display:flex}
    .nav-link{padding:12px 14px;font-size:16px}
    .nav-link.is-active::after{display:none}
    .nav-link.is-active{background:var(--primary-soft)}
    .banner-grid{grid-template-columns:1fr;padding:32px 0 56px}
    .float-card{left:12px;bottom:12px}
    .grid-3{grid-template-columns:repeat(2,1fr)}
    .cta-panel{grid-template-columns:1fr;padding:32px}
    .qr-wrap{justify-self:start}
    .footer-grid{grid-template-columns:1fr 1fr 1fr}
  }

  @media (max-width:767px){
    .section{padding:48px 0}
    .section-head{margin-bottom:28px}
    .banner-title{font-size:clamp(26px,7vw,32px)}
    .banner-sub{font-size:16px}
    .point-row{grid-template-columns:1fr;gap:12px}
    .grid-3{grid-template-columns:1fr}
    .timeline-item{grid-template-columns:44px 1fr;gap:14px}
    .timeline-num{width:44px;height:44px;font-size:16px}
    .timeline-item::before{left:21px;top:48px}
    .timeline-body{padding:16px 18px}
    .cta-panel{padding:26px 22px;border-radius:16px}
    .btn-lg{height:48px;padding:0 20px;font-size:15px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
    .footer-brand{grid-column:1 / -1}
    .to-top{right:16px;bottom:18px}
  }

  @media (max-width:520px){
    .footer-grid{grid-template-columns:1fr}
    .banner-actions .btn,.cta-actions .btn{width:100%}
    .nav-cta{height:40px;padding:0 16px;font-size:14px}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
    html{scroll-behavior:auto}
  }

/* roulang page: category2 */
:root{
    --brand:#1557D6;
    --brand-deep:#0E3E9E;
    --brand-soft:#E8F0FE;
    --teal:#00BFA6;
    --amber:#F5A623;
    --bg:#F4F7FC;
    --card:#FFFFFF;
    --line:#E2E9F4;
    --text:#0F1B2D;
    --muted:#51617A;
    --weak:#8A98AD;
    --r-card:16px;
    --r-btn:12px;
    --r-pill:999px;
    --shadow-card:0 1px 2px rgba(15,27,45,.04), 0 10px 26px -14px rgba(21,87,214,.20);
    --shadow-hover:0 1px 2px rgba(15,27,45,.05), 0 16px 34px -14px rgba(21,87,214,.30);
    --shadow-soft:0 1px 2px rgba(15,27,45,.04), 0 8px 20px -16px rgba(15,27,45,.35);
  }

  *,*::before,*::after{ box-sizing:border-box; }

  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

  body{
    margin:0;
    font-family:system-ui,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }

  img{ display:block; max-width:100%; height:auto; }

  a{ color:inherit; text-decoration:none; }

  button{ font-family:inherit; }

  h1,h2,h3,h4,p,ul,ol,dl,dd,figure{ margin:0; }
  ul,ol{ padding:0; list-style:none; }

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

  .sr-only{
    position:absolute;width:1px;height:1px;padding:0;margin:-1px;
    overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
  }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;line-height:1;
    border:1px solid transparent;cursor:pointer;
    transition:transform .22s ease, box-shadow .22s ease, background-color .22s ease, color .22s ease, border-color .22s ease;
  }
  .btn-primary{
    background:var(--brand);color:#fff;
    box-shadow:0 10px 24px -14px rgba(21,87,214,.65);
  }
  .btn-primary:hover{ background:var(--brand-deep); transform:translateY(-2px); box-shadow:0 16px 30px -16px rgba(21,87,214,.75); }
  .btn-primary:active{ transform:translateY(0); box-shadow:0 8px 18px -14px rgba(21,87,214,.6); }
  .btn-ghost{ background:#fff; color:var(--brand); border-color:#C9DAF8; }
  .btn-ghost:hover{ background:var(--brand-soft); border-color:var(--brand); transform:translateY(-2px); }
  .btn-ghost:active{ transform:translateY(0); }
  .btn-soft{ background:var(--brand-soft); color:var(--brand-deep); }
  .btn-soft:hover{ background:#DCE9FD; transform:translateY(-2px); }
  .btn-teal{ background:var(--teal); color:#04302B; }
  .btn-teal:hover{ background:#00A992; transform:translateY(-2px); }
  .btn-pill{ border-radius:var(--r-pill); }
  .btn-sm{ height:38px; padding:0 16px; font-size:14px; }
  .btn-lg{ height:52px; padding:0 30px; font-size:16px; }
  .btn:focus-visible{ outline:2px solid var(--brand); outline-offset:2px; }
  .btn:disabled{ opacity:.4; cursor:not-allowed; transform:none; box-shadow:none; }

  /* ============ 导航 ============ */
  .site-header{
    position:sticky; top:0; z-index:50;
    background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease;
  }
  .site-header.is-scrolled{ box-shadow:0 8px 24px -18px rgba(15,27,45,.55); }

  .nav-inner{ display:flex; align-items:center; gap:18px; height:68px; }

  .brand{ display:flex; align-items:center; gap:10px; font-size:18px; font-weight:700; color:var(--text); white-space:nowrap; }
  .brand-mark{
    width:36px;height:36px;flex:0 0 36px;border-radius:11px;
    background:var(--brand);color:#fff;
    display:inline-flex;align-items:center;justify-content:center;
    box-shadow:0 8px 18px -12px rgba(21,87,214,.9);
  }
  .brand:focus-visible{ outline:2px solid var(--brand); outline-offset:3px; border-radius:8px; }

  .nav-links{ display:flex; align-items:center; gap:2px; margin-left:6px; }
  .nav-link{
    position:relative; display:inline-flex; align-items:center;
    height:68px; padding:0 13px;
    font-size:15px; color:var(--muted);
    transition:color .2s ease;
  }
  .nav-link:hover{ color:var(--brand); }
  .nav-link.is-active{ color:var(--brand); font-weight:600; }
  .nav-link.is-active::after{
    content:""; position:absolute; left:13px; right:13px; bottom:0;
    height:2px; border-radius:2px; background:var(--brand);
  }
  .nav-link:focus-visible{ outline:2px solid var(--brand); outline-offset:-4px; border-radius:8px; }

  .nav-actions{ margin-left:auto; display:flex; align-items:center; gap:12px; }

  .nav-search{ position:relative; }
  .nav-search input{
    width:200px; height:40px;
    border-radius:var(--r-pill);
    border:1px solid var(--line);
    background:var(--bg);
    padding:0 16px 0 38px;
    font-size:14px; color:var(--text);
    transition:border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
  }
  .nav-search input::placeholder{ color:var(--weak); }
  .nav-search input:focus{
    outline:none; background:#fff;
    border-color:var(--brand);
    box-shadow:0 0 0 4px rgba(21,87,214,.12);
  }
  .nav-search .search-icon{
    position:absolute; left:13px; top:50%; transform:translateY(-50%);
    color:var(--weak); pointer-events:none;
  }

  .nav-login{
    font-size:15px; color:var(--muted); padding:8px 4px;
    transition:color .2s ease;
  }
  .nav-login:hover{ color:var(--brand); }
  .nav-login:focus-visible{ outline:2px solid var(--brand); outline-offset:2px; border-radius:8px; }

  .nav-toggle{
    display:none;
    width:44px;height:44px;border-radius:12px;
    background:#fff;border:1px solid var(--line);
    align-items:center;justify-content:center;
    color:var(--text);cursor:pointer;
    transition:border-color .2s ease, background-color .2s ease;
  }
  .nav-toggle:hover{ border-color:var(--brand); color:var(--brand); }
  .nav-toggle:focus-visible{ outline:2px solid var(--brand); outline-offset:2px; }

  /* 移动端抽屉 */
  .drawer{ position:fixed; inset:0; z-index:80; display:none; }
  .drawer.is-open{ display:block; }
  .drawer-mask{ position:absolute; inset:0; background:rgba(15,27,45,.45); }
  .drawer-panel{
    position:absolute; top:0; right:0; width:min(320px,84vw); height:100%;
    background:#fff; padding:22px 20px 32px;
    box-shadow:-16px 0 40px -24px rgba(15,27,45,.5);
    overflow-y:auto;
  }
  .drawer-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:20px; }
  .drawer-close{
    width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
    background:#fff;color:var(--muted);cursor:pointer;
    display:inline-flex;align-items:center;justify-content:center;
  }
  .drawer-close:hover{ color:var(--brand); border-color:var(--brand); }
  .drawer-nav a{
    display:block; padding:14px 12px; border-radius:10px;
    font-size:16px; color:var(--muted);
    transition:background-color .2s ease, color .2s ease;
  }
  .drawer-nav a:hover{ background:var(--brand-soft); color:var(--brand-deep); }
  .drawer-nav a.is-active{ color:var(--brand); font-weight:600; background:var(--brand-soft); }
  .drawer-actions{ margin-top:20px; display:grid; gap:10px; }

  /* ============ 通用板块 ============ */
  .section{ padding:84px 0; }
  .section-tight{ padding:60px 0; }
  .section-head{ margin-bottom:40px; max-width:760px; }
  .eyebrow{
    display:inline-flex; align-items:center; gap:6px;
    padding:5px 12px; border-radius:var(--r-pill);
    background:var(--brand-soft); color:var(--brand-deep);
    font-size:13px; font-weight:600; letter-spacing:.02em;
  }
  .eyebrow-teal{ background:rgba(0,191,166,.12); color:#03806F; }
  .h2{ font-size:clamp(22px,2.6vw,30px); line-height:1.32; font-weight:700; letter-spacing:-.2px; }
  .h3{ font-size:19px; line-height:1.45; font-weight:600; }
  .lead{ font-size:16px; color:var(--muted); line-height:1.85; margin-top:14px; }
  .muted-text{ color:var(--muted); }
  .rule-4{ width:44px; height:4px; border-radius:2px; background:var(--brand); }

  /* ============ 横幅 ============ */
  .page-banner{ position:relative; overflow:hidden; background:#0E1B2F; }
  .page-banner__media{ position:absolute; inset:0; }
  .page-banner__media img{ width:100%; height:100%; object-fit:cover; }
  .page-banner__veil{
    position:absolute; inset:0;
    background:linear-gradient(104deg, rgba(244,247,252,.97) 0%, rgba(244,247,252,.92) 42%, rgba(232,240,254,.62) 100%);
  }
  .page-banner__inner{ position:relative; padding:74px 0 96px; max-width:720px; }
  .page-banner h1{
    font-size:clamp(28px,4.2vw,44px);
    line-height:1.24;
    font-weight:800;
    letter-spacing:-.6px;
    margin-top:18px;
  }
  .page-banner h1 em{ font-style:normal; color:var(--brand); }
  .page-banner .banner-sub{ font-size:17px; color:var(--muted); margin-top:16px; max-width:600px; }
  .banner-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:28px; }
  .banner-meta{
    display:flex; flex-wrap:wrap; align-items:center; gap:8px 18px;
    margin-top:24px; font-size:13px; color:var(--muted);
  }
  .banner-meta span{ display:inline-flex; align-items:center; gap:6px; }
  .dot-sep{ width:4px; height:4px; border-radius:50%; background:var(--weak); display:inline-block; }

  .breadcrumb{ font-size:13px; color:var(--muted); }
  .breadcrumb a{ color:var(--muted); }
  .breadcrumb a:hover{ color:var(--brand); }
  .breadcrumb .sep{ margin:0 8px; color:var(--weak); }
  .breadcrumb .current{ color:var(--text); font-weight:600; }

  /* ============ 数据条 ============ */
  .stats-section{ position:relative; z-index:3; margin-top:-44px; }
  .stats-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    display:grid; grid-template-columns:repeat(4,1fr);
    padding:30px 6px;
  }
  .stat{ text-align:center; padding:2px 18px; border-right:1px solid var(--line); }
  .stat:last-child{ border-right:none; }
  .stat-num{
    display:block; font-size:clamp(26px,3vw,36px); font-weight:800;
    color:var(--brand); letter-spacing:-.8px; line-height:1.2;
  }
  .stat:nth-child(2) .stat-num{ color:var(--teal); }
  .stat:nth-child(4) .stat-num{ color:var(--brand-deep); }
  .stat-label{ display:block; margin-top:6px; font-size:13px; color:var(--muted); }

  /* ============ 对比卡 ============ */
  .compare-grid{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
  .compare-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:28px;
    box-shadow:var(--shadow-card);
    transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  }
  .compare-card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-hover); border-color:rgba(21,87,214,.28); }
  .compare-card__head{ display:flex; align-items:center; gap:12px; margin-bottom:20px; }
  .icon-badge{
    width:42px;height:42px;flex:0 0 42px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-soft); color:var(--brand-deep);
  }
  .icon-badge--teal{ background:rgba(0,191,166,.13); color:#03806F; }
  .compare-card h3{ font-size:19px; font-weight:700; }
  .compare-card .sub{ font-size:13px; color:var(--weak); margin-top:2px; }
  .tick-list li{
    position:relative; padding:13px 0 13px 28px;
    border-top:1px solid var(--line);
    font-size:15px; color:var(--muted); line-height:1.7;
  }
  .tick-list li:first-child{ border-top:none; }
  .tick-list li::before{
    content:""; position:absolute; left:2px; top:20px;
    width:14px;height:8px;
    border-left:2px solid var(--teal); border-bottom:2px solid var(--teal);
    transform:rotate(-45deg); border-radius:1px;
  }

  /* ============ 图文交替 ============ */
  .media-row{
    display:grid; grid-template-columns:1.05fr .95fr;
    gap:48px; align-items:center;
  }
  .media-row + .media-row{ margin-top:72px; }
  .media-row--reverse .media-text{ order:2; }
  .media-row--reverse .media-figure{ order:1; }
  .media-figure{
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    background:#E9EEF7;
  }
  .media-figure img{ width:100%; aspect-ratio:16/10; object-fit:cover; }
  .media-text h3{ font-size:clamp(20px,2.2vw,25px); font-weight:700; line-height:1.36; margin-top:16px; }
  .media-text p{ margin-top:14px; color:var(--muted); }
  .mini-points{ margin-top:20px; display:grid; gap:10px; }
  .mini-points li{
    display:flex; gap:10px; align-items:flex-start;
    font-size:15px; color:var(--text);
  }
  .mini-points .p-dot{
    flex:0 0 8px; width:8px;height:8px;border-radius:50%;
    background:var(--brand); margin-top:10px;
  }

  /* ============ 列表型要点区 ============ */
  .point-rows{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    overflow:hidden;
  }
  .point-row{
    display:grid; grid-template-columns:56px 260px 1fr;
    gap:20px; align-items:start;
    padding:26px 28px;
    border-top:1px solid var(--line);
    transition:background-color .22s ease;
  }
  .point-row:first-child{ border-top:none; }
  .point-row:hover{ background:#FAFCFF; }
  .point-row .icon-badge{ width:48px;height:48px;flex:0 0 48px; }
  .point-row h3{ font-size:17px; font-weight:600; padding-top:8px; }
  .point-row p{ color:var(--muted); font-size:15px; padding-top:6px; }
  .point-row .tagline{
    display:inline-block; margin-top:8px;
    font-size:12px; color:#03806F;
    background:rgba(0,191,166,.12);
    padding:2px 10px; border-radius:var(--r-pill);
  }

  /* ============ FAQ ============ */
  .faq-wrap{ display:grid; grid-template-columns:.85fr 1.15fr; gap:48px; align-items:start; }
  .faq-list{ display:grid; gap:12px; }
  .faq-item{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    transition:border-color .22s ease, box-shadow .22s ease;
  }
  .faq-item:hover{ border-color:rgba(21,87,214,.28); }
  .faq-item.is-open{ box-shadow:var(--shadow-card); border-color:rgba(21,87,214,.35); }
  .faq-q{
    width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px;
    padding:20px 22px; background:transparent; border:none; cursor:pointer;
    text-align:left; font-size:16px; font-weight:600; color:var(--text);
    position:relative;
    transition:color .2s ease;
  }
  .faq-q::before{
    content:""; position:absolute; left:0; top:16px; bottom:16px; width:3px;
    background:var(--brand); border-radius:0 3px 3px 0;
    opacity:0; transition:opacity .22s ease;
  }
  .faq-item.is-open .faq-q::before{ opacity:1; }
  .faq-q:hover{ color:var(--brand); }
  .faq-q:focus-visible{ outline:2px solid var(--brand); outline-offset:-2px; }
  .faq-arrow{
    flex:0 0 22px; color:var(--weak);
    transition:transform .28s ease, color .22s ease;
  }
  .faq-item.is-open .faq-arrow{ transform:rotate(180deg); color:var(--brand); }
  .faq-a{
    max-height:0; overflow:hidden;
    transition:max-height .3s ease;
  }
  .faq-a__inner{
    margin:0 14px 16px;
    padding:16px 18px;
    background:#F7FAFF;
    border-radius:12px;
    font-size:15px; color:var(--muted); line-height:1.85;
  }

  /* ============ CTA ============ */
  .cta-panel{
    position:relative;
    border-radius:20px;
    overflow:hidden;
    background:var(--brand);
    color:#fff;
    padding:52px 48px;
    box-shadow:0 24px 60px -30px rgba(14,62,158,.75);
  }
  .cta-panel__veil{
    position:absolute; inset:0;
    background:radial-gradient(120% 130% at 92% 12%, rgba(0,191,166,.34) 0%, rgba(0,191,166,0) 58%);
    pointer-events:none;
  }
  .cta-panel__inner{ position:relative; display:grid; grid-template-columns:1.35fr .65fr; gap:40px; align-items:center; }
  .cta-panel h2{ font-size:clamp(22px,2.6vw,30px); font-weight:800; line-height:1.3; letter-spacing:-.3px; }
  .cta-panel p{ margin-top:12px; color:rgba(255,255,255,.86); font-size:15.5px; }
  .cta-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:26px; }
  .cta-note{ margin-top:16px; font-size:13px; color:rgba(255,255,255,.72); }
  .cta-panel .btn-primary{ background:#fff; color:var(--brand-deep); box-shadow:0 14px 30px -18px rgba(0,0,0,.55); }
  .cta-panel .btn-primary:hover{ background:#F0F5FF; }
  .cta-panel .btn-ghost{ background:transparent; color:#fff; border-color:rgba(255,255,255,.5); }
  .cta-panel .btn-ghost:hover{ background:rgba(255,255,255,.12); border-color:#fff; }
  .qr-card{
    background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.24);
    border-radius:var(--r-card);
    padding:20px;
    text-align:center;
  }
  .qr-box{
    width:120px;height:120px;margin:0 auto;
    border-radius:12px;
    background:rgba(255,255,255,.9);
    display:flex;align-items:center;justify-content:center;
    color:var(--brand-deep);
  }
  .qr-card span{ display:block; margin-top:14px; font-size:13px; color:rgba(255,255,255,.85); }

  /* ============ 页脚 ============ */
  .site-footer{ background:#0E1B2F; color:#C7D3E6; margin-top:0; }
  .footer-grid{
    display:grid;
    grid-template-columns:1.7fr 1fr 1fr 1fr 1fr;
    gap:36px;
    padding:64px 0 44px;
  }
  .footer-logo{
    display:flex; align-items:center; gap:10px;
    font-size:17px; font-weight:700; color:#fff; margin-bottom:14px;
  }
  .footer-logo .brand-mark{ width:30px;height:30px;flex:0 0 30px;border-radius:9px; }
  .footer-brand p{ font-size:14px; line-height:1.85; color:#93A4BE; }
  .footer-col h4{ font-size:15px; font-weight:600; color:#fff; margin-bottom:16px; }
  .footer-col ul li{ margin-bottom:10px; }
  .footer-col ul li a{
    font-size:14px; color:#93A4BE;
    transition:color .2s ease;
  }
  .footer-col ul li a:hover{ color:#fff; }
  .footer-col ul li a:focus-visible{ outline:2px solid #4C8BF5; outline-offset:2px; border-radius:6px; }
  .footer-bottom{
    display:flex; flex-wrap:wrap; gap:10px 24px;
    justify-content:space-between;
    border-top:1px solid rgba(255,255,255,.12);
    padding:22px 0 28px;
    font-size:13px; color:#7E90AC;
  }

  /* ============ 回到顶部 ============ */
  .to-top{
    position:fixed; right:24px; bottom:28px; z-index:60;
    width:44px;height:44px;border-radius:50%;
    background:#fff; color:var(--brand);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    display:inline-flex;align-items:center;justify-content:center;
    cursor:pointer;
    opacity:0; visibility:hidden; transform:translateY(10px);
    transition:opacity .25s ease, transform .25s ease, visibility .25s, background-color .2s ease, color .2s ease;
  }
  .to-top.is-visible{ opacity:1; visibility:visible; transform:translateY(0); }
  .to-top:hover{ background:var(--brand); color:#fff; border-color:var(--brand); }
  .to-top:focus-visible{ outline:2px solid var(--brand); outline-offset:3px; }

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .compare-grid{ gap:20px; }
    .media-row{ gap:36px; }
  }

  @media (max-width:1023px){
    .nav-links{ display:none; }
    .nav-search{ display:none; }
    .nav-login{ display:none; }
    .nav-toggle{ display:inline-flex; }

    .section{ padding:64px 0; }
    .page-banner__inner{ padding:56px 0 84px; }

    .compare-grid{ grid-template-columns:1fr; }
    .media-row{ grid-template-columns:1fr; gap:24px; }
    .media-row + .media-row{ margin-top:56px; }
    .media-row--reverse .media-text{ order:1; }
    .media-row--reverse .media-figure{ order:2; }
    .point-row{ grid-template-columns:48px 1fr; row-gap:10px; }
    .point-row h3{ padding-top:6px; }
    .point-row p{ grid-column:2; padding-top:0; }
    .faq-wrap{ grid-template-columns:1fr; gap:28px; }
    .cta-panel__inner{ grid-template-columns:1fr; gap:28px; }
    .footer-grid{ grid-template-columns:1.4fr 1fr 1fr; row-gap:32px; padding:52px 0 36px; }
    .stats-card{ grid-template-columns:repeat(2,1fr); row-gap:22px; padding:24px 4px; }
    .stat:nth-child(2){ border-right:none; }
    .stat:nth-child(3),
    .stat:nth-child(4){ padding-top:6px; }
  }

  @media (max-width:767px){
    .section{ padding:52px 0; }
    .shell{ padding:0 20px; }
    .page-banner__inner{ padding:44px 0 76px; }
    .page-banner .banner-sub{ font-size:15.5px; }
    .banner-actions .btn{ width:100%; }
    .cta-panel{ padding:36px 24px; border-radius:18px; }
    .point-row{ padding:22px 20px; }
    .point-row .icon-badge{ width:42px;height:42px;flex:0 0 42px; }
    .footer-grid{ grid-template-columns:1fr 1fr; }
    .footer-brand{ grid-column:1 / -1; }
    .footer-bottom{ justify-content:flex-start; }
  }

  @media (max-width:520px){
    .nav-cta{ display:none; }
    .stats-card{ grid-template-columns:1fr 1fr; }
    .stat{ padding:2px 10px; }
    .footer-grid{ grid-template-columns:1fr; }
    .to-top{ right:16px; bottom:18px; }
  }

  @media (prefers-reduced-motion: reduce){
    *{ transition-duration:.01ms !important; animation-duration:.01ms !important; }
    html{ scroll-behavior:auto; }
    .btn:hover,
    .compare-card:hover{ transform:none; }
  }