/* roulang page: index */
:root{
  --brand:#1552E0;
  --brand-dark:#0B3AA8;
  --brand-soft:#E8EFFE;
  --brand-band:#EEF4FF;
  --orange:#FF7A1A;
  --orange-dark:#EE6A0B;
  --neon:#2BF0C4;
  --neon-glow:rgba(43,240,196,.35);
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --text:#16233A;
  --muted:#5B6B85;
  --line:#E3EAF5;
  --line-soft:#EEF2F9;
  --dark:#0A1226;
  --dark-2:#101C36;
  --ok:#1FA971;
  --warn:#E8A020;
  --err:#D9453F;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(16,42,90,.05);
  --sh-2:0 8px 24px rgba(16,42,90,.08);
  --sh-3:0 14px 32px rgba(16,42,90,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",Inter,system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.8;letter-spacing:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
input,select,textarea{font-family:inherit;font-size:15px}
::selection{background:var(--brand-soft);color:var(--brand-dark)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0 0}
.section-band{background:var(--card)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:120;background:var(--dark);border-bottom:1px solid rgba(255,255,255,.08)}
.nav{height:64px;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:34px;height:34px;border-radius:9px;background:var(--brand);display:grid;place-items:center;box-shadow:0 0 0 1px rgba(43,240,196,.35)}
.logo-mark svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.logo-text{display:flex;align-items:baseline;gap:5px;color:#fff;font-size:17px;letter-spacing:.3px;white-space:nowrap}
.logo-text b{font-weight:800}
.logo-text span{font-weight:400;color:rgba(255,255,255,.72)}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:8px}
.nav-links a{position:relative;color:rgba(255,255,255,.78);font-size:15px;font-weight:500;padding:20px 2px;transition:color .2s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;width:0;background:var(--neon);border-radius:2px;transition:width .2s var(--ease)}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:#fff;text-shadow:0 0 8px rgba(43,240,196,.35)}
.nav-links a.is-active::after{width:100%;box-shadow:0 0 10px var(--neon-glow)}
.nav-links a:focus-visible{outline:2px solid var(--neon);outline-offset:4px;border-radius:4px}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:16px}
.nav-help{color:rgba(255,255,255,.72);font-size:14px;transition:color .2s var(--ease)}
.nav-help:hover{color:var(--neon);text-decoration:underline;text-underline-offset:4px}
.nav-cta{display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--r-btn);background:var(--orange);color:#fff;font-size:14px;font-weight:600;transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.nav-cta:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(255,122,26,.3)}
.nav-cta:active{transform:translateY(1px)}
.nav-cta:focus-visible{outline:3px solid rgba(255,122,26,.35);outline-offset:2px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.18);background:transparent;border-radius:10px;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{display:none;background:var(--dark-2);border-bottom:1px solid rgba(255,255,255,.08);padding:8px 0 18px}
.nav-drawer a{display:block;padding:14px 32px;color:rgba(255,255,255,.82);font-size:15px;border-left:3px solid transparent}
.nav-drawer a.is-active{color:#fff;border-left-color:var(--neon);background:rgba(43,240,196,.06)}
.nav-drawer.is-open{display:block}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,122,26,.22)}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(255,122,26,.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-primary:focus-visible{outline:3px solid rgba(255,122,26,.28);outline-offset:2px}
.btn-outline{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft)}
.btn-outline:active{transform:translateY(1px)}
.btn-outline:focus-visible{outline:3px solid rgba(21,82,224,.25);outline-offset:2px}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{border-color:var(--neon);color:#fff}
.btn-ghost:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn:disabled{opacity:.45;pointer-events:none}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;position:relative}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--brand);transition:width .2s var(--ease)}
.link-more:hover::after{width:100%}
.link-more:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

/* ---------- badges / meta ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:500;letter-spacing:.2px}
.badge-orange{background:rgba(255,122,26,.12);color:#C2560B}
.badge-dark{background:rgba(43,240,196,.12);color:#0E9C7B}
.meta{font-size:13px;color:var(--muted)}
.breadcrumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb i{color:#C9D4E4;font-style:normal}
.breadcrumb b{color:var(--brand);font-weight:600}

/* ---------- section heads ---------- */
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{font-size:32px;line-height:1.35;font-weight:700;letter-spacing:.4px}
.sec-head p{margin-top:12px;color:var(--muted);font-size:15px}
.sec-line{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-line h2{font-size:32px;font-weight:700;letter-spacing:.4px}
.sec-line p{color:var(--muted);font-size:15px;margin-top:10px}

/* ---------- hero ---------- */
.hero{padding:72px 0 48px;background:var(--card);border-bottom:1px solid var(--line-soft)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;min-height:60vh}
.hero h1{font-size:44px;line-height:1.28;font-weight:800;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:20px;font-size:17px;color:var(--muted);max-width:560px}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-stats{display:flex;align-items:center;gap:14px;margin-top:26px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.hero-stats b{color:var(--text);font-weight:600}
.hero-stats i{width:4px;height:4px;border-radius:50%;background:#C9D4E4;display:inline-block}
.hero-visual{position:relative}
.hero-visual::before{content:"";position:absolute;right:-24px;top:-24px;width:180px;height:180px;border-radius:28px;background:var(--brand-soft);z-index:0}
.hero-visual img{position:relative;z-index:1;width:100%;aspect-ratio:16/12;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-3)}
.hero-float{position:relative;z-index:2;margin:-46px 0 0 24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:16px 20px;display:flex;gap:14px;align-items:center;max-width:320px}
.hero-float strong{display:block;font-size:15px}
.hero-float span{font-size:13px;color:var(--muted)}
.dot-ok{width:34px;height:34px;border-radius:50%;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand);flex-shrink:0}

/* ---------- value ---------- */
.value-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:start}
.value-main{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-1);display:flex;gap:22px}
.value-icon{width:64px;height:64px;border-radius:var(--r-card);background:var(--brand-soft);display:grid;place-items:center;flex-shrink:0;color:var(--brand)}
.value-icon svg{width:30px;height:30px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.value-main h3{font-size:20px;font-weight:600;line-height:1.5}
.value-main ul{margin-top:14px;display:grid;gap:10px}
.value-main li{position:relative;padding-left:20px;font-size:15px;color:var(--muted)}
.value-main li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--brand)}
.value-mini{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.mini-card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:22px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.mini-card:nth-child(2){margin-top:18px}
.mini-card:nth-child(3){margin-top:-8px}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D3E0F6}
.mini-card h4{font-size:16px;font-weight:600;margin-bottom:8px}
.mini-card p{font-size:14px;color:var(--muted);line-height:1.7}
.mini-ico{width:36px;height:36px;border-radius:10px;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand);margin-bottom:14px}
.mini-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* ---------- carousel ---------- */
.shots{background:var(--card);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.shot-wrap{position:relative;padding:0 56px}
.shot-track{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding:8px 2px 22px;scrollbar-width:none}
.shot-track::-webkit-scrollbar{display:none}
.shot{flex:0 0 268px;scroll-snap-align:center}
.shot-frame{width:100%;aspect-ratio:9/19.5;border-radius:20px;border:1px solid #22314F;overflow:hidden;background:#0E1728;box-shadow:var(--sh-2);position:relative}
.shot-frame img{width:100%;height:100%;object-fit:cover}
.shot-frame::after{content:"";position:absolute;inset:0;border-radius:20px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.06)}
.shot-cap{margin-top:14px;text-align:center;font-size:14px;font-weight:600}
.shot-cap span{display:block;font-size:13px;color:var(--muted);font-weight:400;margin-top:4px}
.shot-nav{position:absolute;top:44%;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center;color:var(--brand);cursor:pointer;box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease)}
.shot-nav:hover{box-shadow:var(--sh-2);border-color:#CFDEF7;transform:translateY(-2px)}
.shot-nav:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.shot-nav.prev{left:0}
.shot-nav.next{right:0}
.shot-dots{display:flex;justify-content:center;gap:8px;margin-top:8px}
.shot-dots button{width:8px;height:8px;border-radius:var(--r-pill);border:0;background:#C9D4E4;cursor:pointer;padding:0;transition:all .2s var(--ease)}
.shot-dots button.is-active{width:24px;background:var(--brand)}

/* ---------- requirements ---------- */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.req-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease)}
.req-card:hover{box-shadow:var(--sh-2)}
.req-head{display:flex;align-items:center;gap:14px;padding-bottom:18px;border-bottom:1px solid var(--line-soft)}
.req-badge{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand);flex-shrink:0}
.req-badge svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.req-head h3{font-size:18px;font-weight:600}
.req-head p{font-size:13px;color:var(--muted)}
.kv{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line-soft);font-size:14px}
.kv:last-child{border-bottom:0;padding-bottom:0}
.kv dt{color:var(--muted)}
.kv dd{margin:0;font-size:15px;font-weight:500;text-align:right}

/* ---------- reviews ---------- */
.reviews{background:var(--card);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.review-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-2);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.review-card:nth-child(2){margin-top:24px}
.review-card:nth-child(3){margin-top:12px}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.review-card::before{content:"”";position:absolute;right:22px;top:6px;font-size:52px;line-height:1;color:var(--brand-soft);font-family:Georgia,serif}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:700;font-size:15px}
.review-top strong{display:block;font-size:15px}
.stars{color:var(--orange);font-size:13px;letter-spacing:2px}
.review-card p{font-size:15px;color:var(--muted);line-height:1.8}
.review-foot{margin-top:16px;font-size:13px;color:#8B99B0}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line-soft);max-width:920px}
.faq-item{border-bottom:1px solid var(--line-soft)}
.faq-q{width:100%;background:transparent;border:0;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 2px;text-align:left;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;transition:color .2s var(--ease)}
.faq-q:hover{color:var(--brand)}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.faq-sign{position:relative;width:20px;height:20px;flex-shrink:0;transition:transform .2s var(--ease)}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-sign::before{left:0;top:9px;width:20px;height:2px}
.faq-sign::after{left:9px;top:0;width:2px;height:20px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-sign{transform:rotate(180deg)}
.faq-item.is-open .faq-sign::after{opacity:0}
.faq-a{display:none;background:#F7F9FD;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);padding:20px 22px;font-size:15px;color:var(--muted)}
.faq-item.is-open .faq-a{display:block}

/* ---------- news / cms ---------- */
.news-lead{display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:26px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.news-lead:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.news-lead-media{border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:var(--brand-soft)}
.news-lead-media img{width:100%;height:100%;object-fit:cover}
.news-lead h3{margin-top:12px;font-size:22px;font-weight:700;line-height:1.5;transition:color .2s var(--ease)}
.news-lead:hover h3{color:var(--brand)}
.news-lead p{margin-top:12px;font-size:15px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:16px;display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.news-rows{margin-top:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.news-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center;padding:20px 24px;border-bottom:1px solid var(--line-soft);transition:background .2s var(--ease)}
.news-row:last-child{border-bottom:0}
.news-row:hover{background:#F4F7FC}
.news-row:hover h4{color:var(--brand)}
.news-row h4{font-size:16px;font-weight:600;transition:color .2s var(--ease)}
.news-row p{margin-top:6px;font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row .meta{white-space:nowrap}
.empty-state{border:1px dashed #D7E1F0;border-radius:var(--r-card);padding:44px 24px;text-align:center;background:#fff}
.empty-state svg{width:36px;height:36px;stroke:#9FB1CB;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;margin:0 auto 14px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px}

/* ---------- download band ---------- */
.dl-band{background:var(--brand-band);border-radius:20px;padding:44px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.dl-band h2{font-size:30px;font-weight:700;line-height:1.4}
.dl-band p{margin-top:12px;color:var(--muted);font-size:15px;max-width:520px}
.dl-actions{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.dl-os{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-btn);background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--text);transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.dl-os:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-2)}
.dl-os:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.dl-os svg{width:18px;height:18px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.qr-box{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center;box-shadow:var(--sh-1)}
.qr-code{width:140px;height:140px;margin:0 auto;border-radius:8px;background:
  linear-gradient(90deg,#16233A 25%,transparent 25%) 0 0/16px 16px,
  linear-gradient(180deg,#16233A 25%,transparent 25%) 0 0/16px 16px,
  #fff;border:1px solid var(--line);opacity:.86}
.qr-box span{display:block;margin-top:14px;font-size:13px;color:var(--muted)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-grid h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:300px}
.footer-brand .fnote{margin-top:16px;font-size:13px;color:rgba(255,255,255,.45)}
.footer-links{display:grid;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s var(--ease),text-decoration-color .2s var(--ease);text-decoration:underline;text-decoration-color:transparent;text-underline-offset:4px}
.footer-links a:hover{color:#fff;text-decoration-color:var(--neon)}
.footer-links a:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0 28px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:auto}
  .hero h1{font-size:36px}
  .hero-visual::before{display:none}
  .value-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr 1fr;gap:20px}
  .review-card:nth-child(3){margin-top:0}
  .news-lead{grid-template-columns:1fr}
  .dl-band{grid-template-columns:1fr;padding:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .nav-links,.nav-help{display:none}
  .nav-toggle{display:flex}
  .nav-right{gap:12px}
  .hero{padding:44px 0 36px}
  .hero h1{font-size:28px;letter-spacing:.3px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-float{margin:-32px 0 0 0;max-width:none}
  .sec-head h2,.sec-line h2,.dl-band h2{font-size:24px}
  .value-main{flex-direction:column}
  .value-mini{grid-template-columns:1fr}
  .mini-card:nth-child(2),.mini-card:nth-child(3){margin-top:0}
  .shot-wrap{padding:0 16px}
  .shot-nav{display:none}
  .shot{flex:0 0 78%}
  .req-grid{grid-template-columns:1fr}
  .review-grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:12px}
  .review-card{flex:0 0 84%;scroll-snap-align:start;margin-top:0!important}
  .news-row{grid-template-columns:1fr}
  .news-row .meta{white-space:normal}
  .dl-band{padding:26px}
  .dl-actions .btn,.dl-actions .dl-os{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:64px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  body{font-size:15px}
  .hero h1{font-size:26px}
  .shot{flex:0 0 86%}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root{
  --c-primary:#1552E0;
  --c-primary-dark:#0B3AA8;
  --c-primary-soft:#E8EFFE;
  --c-accent:#FF7A1A;
  --c-accent-dark:#E96A0C;
  --c-neon:#2BF0C4;
  --c-bg:#F4F7FC;
  --c-card:#FFFFFF;
  --c-text:#16233A;
  --c-muted:#5B6B85;
  --c-line:#E3EAF5;
  --c-split:#EEF2F9;
  --c-dark:#0A1226;
  --c-dark-2:#101C36;
  --c-success:#1FA971;
  --c-warn:#E8A020;
  --r-card:14px;
  --r-lg:20px;
  --r-sm:8px;
  --r-btn:10px;
  --sh-1:0 2px 8px rgba(16,42,90,.05);
  --sh-2:0 8px 24px rgba(16,42,90,.08);
  --sh-3:0 14px 32px rgba(16,42,90,.12);
  --t:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0}
svg{display:block}
:focus-visible{outline:2px solid var(--c-neon);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-dark);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{
  height:64px;display:flex;align-items:center;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(180deg,#1D6BFF,#0B3AA8);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 1px rgba(43,240,196,.25);
}
.logo-mark svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.logo-text{display:flex;align-items:baseline;gap:2px;font-size:17px;color:#fff;letter-spacing:.3px;white-space:nowrap}
.logo-text b{font-weight:800}
.logo-text span{font-weight:400;color:rgba(255,255,255,.72)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 14px;border-radius:8px;
  color:rgba(255,255,255,.78);font-size:15px;
  transition:color var(--t),background var(--t);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--c-neon);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform var(--t);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{
  color:#fff;text-shadow:0 0 10px rgba(43,240,196,.35);
}
.nav-links a.is-active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(43,240,196,.55)}
.header-cta{display:flex;align-items:center;gap:14px;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform var(--t),background var(--t),box-shadow var(--t),color var(--t),border-color var(--t);
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,26,.28)}
.btn-primary:hover{background:var(--c-accent-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,26,.34)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(255,122,26,.26)}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,122,26,.28)}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{border-color:var(--c-neon);color:#fff}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.header-cta .btn{height:40px;padding:0 18px;font-size:14px}
.header-link{color:rgba(255,255,255,.7);font-size:14px;position:relative}
.header-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;background:var(--c-neon);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.header-link:hover{color:#fff}
.header-link:hover::after{transform:scaleX(1)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  align-items:center;justify-content:center;
}
.nav-toggle span{width:18px;height:2px;background:#fff;border-radius:2px;position:relative;display:block}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 面包屑 ============ */
.crumb-bar{padding:20px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
.crumb a{color:var(--c-muted);transition:color var(--t)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:#C9D4E4}
.crumb .now{color:var(--c-primary);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.article-head{padding:24px 0 28px;border-bottom:1px solid var(--c-line)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:500;
}
.article-head h1{
  margin:16px 0 0;
  font-size:38px;line-height:1.35;font-weight:800;letter-spacing:.4px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:18px;font-size:14px;color:var(--c-muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9D4E4}
.article-meta strong{color:var(--c-text);font-weight:600}

/* ============ 正文双栏 ============ */
.article-wrap{padding:48px 0 96px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,820px) 300px;
  gap:56px;align-items:start;
}
.article-body{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:40px 44px;box-shadow:var(--sh-2);
  font-size:17px;line-height:1.9;
}
.article-body > * + *{margin-top:1.2em}
.article-body p{color:#22314C}
.article-body h2{
  position:relative;padding-left:18px;
  font-size:25px;line-height:1.45;font-weight:700;color:var(--c-text);
  margin-top:2em;
}
.article-body h2:first-child{margin-top:0}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;
  background:var(--c-primary);
}
.article-body h3{
  font-size:19px;font-weight:600;color:var(--c-primary-dark);margin-top:1.6em;
}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(21,82,224,.35);transition:border-color var(--t),color var(--t)}
.article-body a:hover{color:var(--c-primary-dark);border-color:var(--c-primary-dark)}
.article-body blockquote{
  margin:1.4em 0;padding:18px 22px;
  background:var(--c-primary-soft);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;color:#1D3260;
}
.article-body ul{list-style:none}
.article-body ul li{position:relative;padding-left:24px;margin:.5em 0}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:999px;
  background:var(--c-primary);
}
.article-body ol{list-style:none;counter-reset:item}
.article-body ol li{position:relative;padding-left:38px;margin:.6em 0;counter-increment:item}
.article-body ol li::before{
  content:counter(item);
  position:absolute;left:0;top:.28em;width:24px;height:24px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:600;line-height:24px;text-align:center;
}
.article-body img{border-radius:12px;box-shadow:var(--sh-2);margin:0 auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-muted);margin-top:10px}
.article-body code{background:var(--c-split);padding:2px 6px;border-radius:6px;font-size:15px}

/* 空态 */
.empty-state{
  border:1px dashed #D7E1F0;border-radius:var(--r-card);
  padding:56px 24px;text-align:center;background:#FBFCFE;
}
.empty-state .ico{
  width:56px;height:56px;border-radius:16px;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
}
.empty-state .ico svg{width:26px;height:26px;fill:none;stroke:var(--c-primary);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{color:var(--c-muted);font-size:15px;margin-bottom:20px}

/* 标签行 */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:36px;padding-top:22px;border-top:1px solid var(--c-split);
}
.tag-row .label{font-size:14px;color:var(--c-muted)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border-radius:999px;background:var(--c-split);color:#33456B;font-size:13px;
  transition:background var(--t),color var(--t);
}
.tag:hover{background:var(--c-primary-soft);color:var(--c-primary)}

/* 上下篇双卡 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px;padding:0 0 0}
.post-card{
  display:block;background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#CFDDF5}
.post-card .dir{font-size:13px;color:var(--c-muted);display:flex;align-items:center;gap:6px}
.post-card h4{margin-top:10px;font-size:16px;font-weight:600;line-height:1.6;color:var(--c-text);transition:color var(--t)}
.post-card:hover h4{color:var(--c-primary)}
.post-card.right{text-align:right}
.post-card.right .dir{justify-content:flex-end}

/* ============ 侧栏 ============ */
.sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px}
.widget{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-1);
}
.widget h3{
  font-size:16px;font-weight:700;margin-bottom:14px;padding-bottom:12px;
  border-bottom:1px solid var(--c-split);
}
.widget-list{display:flex;flex-direction:column}
.widget-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;font-size:14px;color:#33456B;border-bottom:1px solid var(--c-split);
  transition:color var(--t),padding-left var(--t);
}
.widget-list a:last-child{border-bottom:none;padding-bottom:0}
.widget-list a:hover{color:var(--c-primary);padding-left:4px}
.widget-list .arrow{color:#C9D4E4;font-size:13px;transition:color var(--t),transform var(--t)}
.widget-list a:hover .arrow{color:var(--c-primary);transform:translateX(2px)}
.hot-item{display:block;padding:12px 0;border-bottom:1px solid var(--c-split);transition:color var(--t)}
.hot-item:last-child{border-bottom:none;padding-bottom:0}
.hot-item .t{font-size:14px;line-height:1.6;color:#22314C;transition:color var(--t)}
.hot-item:hover .t{color:var(--c-primary)}
.hot-item .d{font-size:12px;color:var(--c-muted);margin-top:6px}
.widget .btn{width:100%}

/* ============ 相关推荐 ============ */
.related{padding:0 0 96px}
.section-head{margin-bottom:28px}
.section-head h2{font-size:28px;font-weight:700;letter-spacing:.4px}
.section-head p{margin-top:8px;font-size:15px;color:var(--c-muted)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.rel-card .thumb{aspect-ratio:16/9;overflow:hidden}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease-out}
.rel-card:hover .thumb img{transform:scale(1.04)}
.rel-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.rel-card h3{font-size:17px;font-weight:600;line-height:1.55;transition:color var(--t)}
.rel-card:hover h3{color:var(--c-primary)}
.rel-card .meta{margin-top:auto;font-size:13px;color:var(--c-muted)}

/* ============ CTA ============ */
.cta-band{padding:0 0 96px}
.cta-box{
  background:#EEF4FF;border-radius:var(--r-lg);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-box h2{font-size:26px;font-weight:700;letter-spacing:.4px}
.cta-box p{margin-top:10px;font-size:15px;color:#3B4E75;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.74);padding:64px 0 0;font-size:14px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{line-height:1.8;max-width:340px;color:rgba(255,255,255,.62)}
.fnote{margin-top:14px;font-size:13px;color:rgba(255,255,255,.42)}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{
  color:rgba(255,255,255,.68);position:relative;width:fit-content;
  transition:color var(--t);
}
.footer-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;
  background:var(--c-neon);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.footer-links a:hover{color:#fff}
.footer-links a:hover::after{transform:scaleX(1)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:22px 0 30px;font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:40px}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;top:auto}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .header-inner{height:60px;gap:12px}
  .nav-toggle{display:flex;margin-left:auto}
  .header-cta .btn{display:none}
  .header-link{display:none}
  .nav-links{
    display:none;position:fixed;left:0;right:0;top:60px;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:var(--c-dark-2);border-bottom:1px solid rgba(255,255,255,.08);
    padding:10px 16px 20px;
  }
  .nav-links.is-open{display:flex}
  .nav-links a{height:48px;padding:0 14px;border-radius:0;border-left:3px solid transparent}
  .nav-links a::after{display:none}
  .nav-links a.is-active{border-left-color:var(--c-neon);background:rgba(43,240,196,.06)}
  .article-head{padding:16px 0 22px}
  .article-head h1{font-size:27px}
  .crumb .now{max-width:220px}
  .article-wrap{padding:32px 0 64px}
  .article-body{padding:26px 20px;font-size:16px;border-radius:var(--r-card)}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .post-nav{grid-template-columns:1fr}
  .post-card.right{text-align:left}
  .post-card.right .dir{justify-content:flex-start}
  .related{padding-bottom:64px}
  .related-grid{grid-template-columns:1fr;gap:18px}
  .cta-band{padding-bottom:64px}
  .cta-box{padding:28px 22px;border-radius:var(--r-card)}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .site-footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .article-body{font-size:15px;padding:22px 16px;line-height:1.85}
  .article-head h1{font-size:24px}
  .section-head h2{font-size:22px}
  .cta-box h2{font-size:21px}
  .logo-text{font-size:15px}
}

/* roulang page: category1 */
:root{
  --primary:#1552E0;
  --primary-dark:#0B3AA8;
  --primary-soft:#E8EFFE;
  --accent:#FF7A1A;
  --accent-dark:#E86A0F;
  --neon:#2BF0C4;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --text:#16233A;
  --muted:#5B6B85;
  --border:#E3EAF5;
  --line:#EEF2F9;
  --dark:#0A1226;
  --dark-2:#101C36;
  --glow:rgba(43,240,196,.35);
  --ok:#1FA971;
  --warn:#E8A020;
  --err:#D9453F;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(16,42,90,.05);
  --sh-2:0 8px 24px rgba(16,42,90,.08);
  --sh-3:0 14px 32px rgba(16,42,90,.12);
  --sec:96px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Inter",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--text);
  background:var(--bg);-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;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(--neon);outline-offset:3px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--dark);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{display:flex;align-items:center;gap:28px;height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),#2C7BFF);
  box-shadow:0 0 0 1px rgba(43,240,196,.25),0 6px 16px rgba(21,82,224,.35);
}
.logo-mark svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{color:#fff;font-size:16px;font-weight:800;letter-spacing:.5px;}
.logo-text span{color:#9FB0CE;font-size:12px;letter-spacing:.5px;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:64px;padding:0 14px;
  color:#C7D3E8;font-size:15px;transition:color .2s ease-out;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;box-shadow:0 0 10px var(--glow);
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:#fff;text-shadow:0 0 12px rgba(43,240,196,.45);}
.nav-links a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:auto;}
.header-link{color:#9FB0CE;font-size:14px;transition:color .2s ease-out;position:relative;}
.header-link:hover{color:var(--neon);}
.header-link:focus-visible{outline:2px solid var(--neon);outline-offset:3px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  text-align:center;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,26,.28);}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 22px rgba(255,122,26,.34);}
.btn-primary:active{transform:translateY(-1px);}
.btn-primary:focus-visible{outline:3px solid rgba(255,122,26,.28);outline-offset:2px;}
.btn-outline{background:#fff;border:1px solid var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px);}
.btn-ghost{background:#fff;border:1px solid var(--border);color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;transition:transform .2s ease-out;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  display:none;background:var(--dark);border-top:1px solid rgba(255,255,255,.08);
  padding:8px 0 18px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;padding:14px 32px;color:#C7D3E8;font-size:15px;border-left:3px solid transparent;
  transition:color .2s ease-out,background-color .2s ease-out;
}
.mobile-drawer a:hover{color:#fff;background:var(--dark-2);}
.mobile-drawer a.is-active{color:#fff;border-left-color:var(--neon);background:var(--dark-2);}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;overflow:hidden;background:var(--dark);
  min-height:340px;display:flex;align-items:flex-end;
}
.page-banner .banner-media{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,16,40,.95) 0%,rgba(11,58,168,.82) 55%,rgba(21,82,224,.62) 100%);
}
.banner-inner{position:relative;z-index:2;padding:72px 0 56px;color:#fff;}
.banner-badge{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(43,240,196,.14);border:1px solid rgba(43,240,196,.4);color:var(--neon);
  font-size:12.5px;font-weight:500;letter-spacing:.5px;margin-bottom:18px;
}
.banner-inner h1{
  font-size:44px;line-height:1.25;font-weight:800;letter-spacing:.5px;max-width:760px;
}
.banner-inner p{
  margin-top:18px;max-width:660px;font-size:16px;line-height:1.8;color:#C9D7F2;
}
.banner-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.banner-stats span{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  font-size:13px;color:#D6E1F6;
}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:16px 0;font-size:13px;color:var(--muted);
}
.breadcrumb .sep{color:#C9D4E4;}
.breadcrumb a{transition:color .2s ease-out;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--primary);font-weight:500;}

/* ---------- 布局 ---------- */
.page-body{padding:64px 0 var(--sec);}
.layout{display:grid;grid-template-columns:1fr 300px;gap:48px;align-items:start;}
.main-col{min-width:0;}
.side-col{position:sticky;top:88px;}

.panel{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);
}
.panel + .panel{margin-top:24px;}
.section-title{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px;}
.section-title .bar{
  width:4px;height:26px;border-radius:3px;background:var(--primary);margin-top:5px;flex-shrink:0;
}
.section-title h2{font-size:26px;font-weight:700;letter-spacing:.5px;line-height:1.35;}
.section-title p{font-size:14px;color:var(--muted);margin-top:6px;}

.lead p{font-size:16.5px;line-height:1.9;color:#2A3A55;}
.lead p + p{margin-top:16px;}
.lead strong{color:var(--primary-dark);font-weight:600;}

.check-list{margin-top:22px;display:grid;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;line-height:1.8;color:#2A3A55;}
.check-list .tick{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;background:var(--primary-soft);
  display:grid;place-items:center;margin-top:4px;
}
.check-list .tick svg{width:13px;height:13px;fill:none;stroke:var(--primary);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:28px;padding-left:44px;}
.timeline::before{
  content:"";position:absolute;left:15px;top:8px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--primary) 0%,#9DBBF7 100%);
}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:-44px;top:2px;width:32px;height:32px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);color:var(--primary);
  display:grid;place-items:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 5px #fff;
}
.tl-item h3{font-size:19px;font-weight:600;letter-spacing:.3px;margin-bottom:8px;}
.tl-item p{font-size:15.5px;line-height:1.85;color:#3A4A66;}
.tl-item p + p{margin-top:6px;color:var(--muted);font-size:14.5px;}
.tl-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary);font-size:12.5px;font-weight:500;
  margin-bottom:10px;letter-spacing:.3px;
}

/* ---------- 提示块 ---------- */
.callout{
  display:flex;gap:14px;margin-top:24px;padding:20px 22px;border-radius:var(--r-card);
  background:var(--primary-soft);border-left:3px solid var(--primary);
}
.callout .ic{flex-shrink:0;width:24px;height:24px;margin-top:2px;}
.callout .ic svg{width:24px;height:24px;fill:none;stroke:var(--primary);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.callout p{font-size:15px;line-height:1.85;color:#24365A;}

/* ---------- FAQ ---------- */
.faq-list{margin-top:24px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;font-size:16px;font-weight:600;text-align:left;color:var(--text);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  position:relative;flex-shrink:0;width:22px;height:22px;border-radius:50%;
  border:1.5px solid var(--border);transition:transform .2s ease-out,border-color .2s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:1.6px;}
.faq-icon::after{width:1.6px;height:10px;transition:opacity .2s ease-out;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);border-color:var(--primary);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease-out;
  background:#F7F9FD;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.faq-a p{padding:18px 20px;font-size:15px;line-height:1.9;color:#3A4A66;}

/* ---------- 侧栏 ---------- */
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
}
.side-card + .side-card{margin-top:20px;}
.side-card h3{font-size:15px;font-weight:700;letter-spacing:.4px;margin-bottom:14px;}
.toc-nav{display:grid;gap:2px;}
.toc-nav a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;
  font-size:14px;color:var(--muted);transition:background-color .2s ease-out,color .2s ease-out;
}
.toc-nav a::before{
  content:"";width:6px;height:6px;border-radius:50%;background:#C9D4E4;flex-shrink:0;
  transition:background-color .2s ease-out;
}
.toc-nav a:hover{background:var(--primary-soft);color:var(--primary-dark);}
.toc-nav a:hover::before{background:var(--primary);}
.toc-nav a.is-current{background:var(--primary-soft);color:var(--primary-dark);font-weight:600;}
.toc-nav a.is-current::before{background:var(--primary);}
.side-card .cover-img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;margin-bottom:14px;
  border:1px solid var(--border);
}
.side-card .cover-cap{font-size:13.5px;color:var(--muted);line-height:1.7;}
.side-btn{width:100%;margin-top:14px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin-top:0;background:#EEF4FF;border-radius:var(--r-lg);padding:40px;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  border:1px solid #DCE7FB;
}
.cta-band h2{font-size:26px;font-weight:700;letter-spacing:.4px;line-height:1.4;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--muted);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px;}
.cta-side{display:flex;flex-direction:column;align-items:center;gap:10px;}
.qr-box{
  width:132px;height:132px;border-radius:12px;background:#fff;border:1px solid var(--border);
  display:grid;place-items:center;box-shadow:var(--sh-1);
}
.qr-box svg{width:56px;height:56px;fill:none;stroke:var(--primary);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;}
.cta-side span{font-size:13px;color:var(--muted);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#C7D3E8;padding:64px 0 0;margin-top:var(--sec);}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#9FB0CE;max-width:330px;}
.fnote{margin-top:14px;font-size:13px;color:#6F80A3;}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.4px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{
  font-size:14px;color:#9FB0CE;display:inline-block;position:relative;
  transition:color .2s ease-out;
}
.footer-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--neon);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.footer-links a:hover{color:#fff;}
.footer-links a:hover::after{transform:scaleX(1);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:22px 0 28px;font-size:13px;color:#6F80A3;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .layout{grid-template-columns:1fr;gap:32px;}
  .side-col{position:static;}
  .banner-inner h1{font-size:36px;}
  .cta-band{grid-template-columns:1fr;padding:32px;}
  .cta-side{flex-direction:row;gap:16px;align-items:center;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  :root{--sec:64px;}
}
@media (max-width:768px){
  .nav-links,.header-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{gap:16px;}
  .mobile-drawer{position:absolute;left:0;right:0;top:64px;}
  .page-banner{min-height:280px;}
  .banner-inner{padding:56px 0 40px;}
  .banner-inner h1{font-size:28px;}
  .banner-inner p{font-size:15px;margin-top:14px;}
  .page-body{padding:40px 0 var(--sec);}
  .panel{padding:24px;}
  .section-title h2{font-size:22px;}
  .cta-band h2{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .timeline{padding-left:38px;}
  .timeline::before{left:13px;}
  .tl-dot{left:-38px;width:28px;height:28px;font-size:13px;}
  :root{--sec:48px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .banner-inner h1{font-size:26px;}
  .lead p{font-size:15.5px;}
  .panel{padding:20px;}
  .tl-item h3{font-size:17px;}
  .faq-q{font-size:15px;padding:16px 2px;}
  .cta-side{flex-direction:column;align-items:flex-start;}
  .footer-bottom{font-size:12.5px;}
}

/* roulang page: category2 */
:root{
  --brand:#1552E0;
  --brand-dark:#0B3AA8;
  --brand-light:#E8EFFE;
  --accent:#FF7A1A;
  --accent-dark:#E96A0B;
  --neon:#2BF0C4;
  --neon-glow:rgba(43,240,196,.35);
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --text:#16233A;
  --muted:#5B6B85;
  --line:#E3EAF5;
  --line-soft:#EEF2F9;
  --dark:#0A1226;
  --dark-2:#101C36;
  --success:#1FA971;
  --warn:#E8A020;
  --error:#D9453F;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-sm:8px;
  --sd-1:0 2px 8px rgba(16,42,90,.05);
  --sd-2:0 8px 24px rgba(16,42,90,.08);
  --sd-3:0 14px 32px rgba(16,42,90,.12);
  --sec:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sec) 0;}
.section-tight{padding:64px 0;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:var(--dark);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:64px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:#fff;
}
.logo-mark{
  width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  box-shadow:0 0 0 1px rgba(43,240,196,.35), 0 4px 12px rgba(43,240,196,.18);
}
.logo-mark svg{width:20px;height:20px;fill:none;stroke:var(--neon);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{font-size:16px;letter-spacing:.2px;line-height:1.2;white-space:nowrap;}
.logo-text b{font-weight:800;color:#fff;}
.logo-text span{font-weight:400;color:#A9B8D6;}
.footer-brand .logo-text b{color:#fff;}
.footer-brand .logo-text span{color:#A9B8D6;}

.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 auto;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:20px 14px;
  font-size:14.5px;
  color:#C6D2E8;
  transition:color .2s ease-out;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:14px;
  height:2px;
  background:var(--neon);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease-out;
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{
  color:#fff;
  text-shadow:0 0 8px var(--neon-glow);
}
.nav-links a.is-active::after{
  transform:scaleX(1);
  box-shadow:0 0 10px var(--neon-glow);
}

.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.nav-scan{
  font-size:13.5px;
  color:#8FA2C4;
  border-bottom:1px solid transparent;
  white-space:nowrap;
}
.nav-scan:hover{color:var(--neon);border-bottom-color:var(--neon);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-btn);
  font-size:15.5px;
  font-weight:600;
  letter-spacing:.2px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 6px 16px rgba(255,122,26,.24);
}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,26,.3);}
.btn-primary:active{transform:translateY(0);}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,122,26,.28);}
.btn-ghost{
  background:#fff;
  color:var(--brand);
  border:1px solid var(--brand);
}
.btn-ghost:hover{background:var(--brand-light);transform:translateY(-2px);box-shadow:var(--sd-2);}
.btn-ghost:active{transform:translateY(0);}
.btn-outline-light{
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,.28);
}
.btn-outline-light:hover{border-color:var(--neon);color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative;}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ Banner ============ */
.page-banner{
  position:relative;
  overflow:hidden;
  background:var(--brand-dark);
}
.banner-bg{
  position:absolute;
  inset:0;
  width:100%;height:100%;
  object-fit:cover;
}
.banner-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,rgba(11,58,168,.88) 0%,rgba(10,18,38,.82) 78%);
}
.banner-inner{
  position:relative;
  z-index:2;
  padding:78px 32px 72px;
  max-width:1200px;
  margin:0 auto;
}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:500;
  letter-spacing:.2px;
  background:var(--brand-light);
  color:var(--brand);
}
.badge-dark{
  background:rgba(43,240,196,.14);
  color:var(--neon);
  border:1px solid rgba(43,240,196,.4);
}
.banner-inner h1{
  margin:16px 0 14px;
  font-size:44px;
  line-height:1.25;
  font-weight:800;
  color:#fff;
  letter-spacing:.5px;
  max-width:820px;
}
.banner-inner p{
  max-width:700px;
  color:#C3D1EA;
  font-size:16.5px;
}

/* ============ 面包屑 ============ */
.breadcrumb-wrap{
  background:#fff;
  border-bottom:1px solid var(--line-soft);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:16px 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb .sep{color:#C9D4E4;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;}
.breadcrumb .current{color:var(--brand);font-weight:500;}

/* ============ 通用标题 ============ */
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-head h2{
  font-size:32px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:.4px;
  margin-bottom:14px;
}
.sec-head p{color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  letter-spacing:1px;
  margin-bottom:10px;
}

/* ============ 简介区 ============ */
.intro-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.intro-copy p{color:#33425E;margin-bottom:18px;}
.intro-copy p:last-of-type{margin-bottom:26px;}
.intro-points{display:flex;flex-wrap:wrap;gap:10px;}
.intro-points span{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:13.5px;
  font-weight:500;
}
.intro-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sd-3);
  background:#fff;
}
.intro-figure img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
}
.intro-figure figcaption{
  padding:14px 20px;
  font-size:13px;
  color:var(--muted);
  background:#fff;
  border-top:1px solid var(--line-soft);
}

/* ============ 设备对照卡矩阵 ============ */
.device-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.device-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sd-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.device-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sd-3);
  border-color:#D3DEF1;
}
.device-head{
  display:flex;
  align-items:center;
  gap:14px;
  padding-bottom:18px;
  margin-bottom:6px;
  border-bottom:1px solid var(--line-soft);
}
.device-icon{
  width:44px;height:44px;
  flex-shrink:0;
  border-radius:12px;
  background:var(--brand-light);
  display:flex;align-items:center;justify-content:center;
}
.device-icon svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.device-head h3{font-size:19px;font-weight:600;line-height:1.4;}
.device-head small{display:block;font-size:13px;color:var(--muted);font-weight:400;margin-top:2px;}
.kv-row{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  padding:12px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:14.5px;
}
.kv-row:last-child{border-bottom:0;padding-bottom:0;}
.kv-row dt{color:var(--muted);flex-shrink:0;font-size:14px;}
.kv-row dd{margin:0;text-align:right;color:var(--text);font-weight:500;font-size:15px;}

/* ============ 适配度对比条 ============ */
.fit-panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:34px 36px;
  box-shadow:var(--sd-2);
}
.fit-row{margin-bottom:26px;}
.fit-row:last-child{margin-bottom:0;}
.fit-label{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:10px;
  font-size:15px;
}
.fit-label b{font-weight:600;}
.fit-label span{font-size:13px;color:var(--muted);}
.fit-track{
  position:relative;
  height:10px;
  border-radius:999px;
  background:#E9EFFA;
  overflow:hidden;
}
.fit-fill{
  display:block;
  height:100%;
  border-radius:999px;
  background:var(--brand);
  width:var(--pct,80%);
  transition:width .8s ease-out;
}
.fit-fill.accent{background:var(--accent);}
.fit-fill.neon{background:#12B48F;}
.fit-note{
  margin-top:26px;
  padding:16px 20px;
  border-radius:var(--r-sm);
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:14px;
}

/* ============ 检查清单 ============ */
.check-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.check-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.check-card:hover{transform:translateY(-3px);box-shadow:var(--sd-2);}
.check-card h3{font-size:17px;font-weight:600;margin:12px 0 8px;}
.check-card p{font-size:14.5px;color:var(--muted);}
.check-ico{
  width:36px;height:36px;border-radius:10px;
  background:rgba(31,169,113,.12);
  display:flex;align-items:center;justify-content:center;
}
.check-ico svg{width:18px;height:18px;fill:none;stroke:var(--success);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* ============ FAQ ============ */
.faq-list{
  max-width:900px;
  margin:0 auto;
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--brand);}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.faq-ico{
  position:relative;
  width:20px;height:20px;
  flex-shrink:0;
  transition:transform .2s ease-out;
}
.faq-ico::before,
.faq-ico::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
}
.faq-ico::before{left:0;top:9px;width:20px;height:2px;}
.faq-ico::after{left:9px;top:0;width:2px;height:20px;transition:opacity .2s ease-out;}
.faq-item.open .faq-ico{transform:rotate(180deg);}
.faq-item.open .faq-ico::after{opacity:0;}
.faq-a{
  display:none;
  padding:0 4px 24px;
  color:#3B4A66;
  font-size:15.5px;
  background:var(--bg);
  border-top:1px solid var(--line-soft);
  margin-top:-1px;
  padding-top:18px;
  border-radius:0 0 var(--r-sm) var(--r-sm);
}
.faq-item.open .faq-a{display:block;}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--brand-light);
  border-radius:var(--r-lg);
  padding:48px 48px;
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:40px;
  align-items:center;
}
.cta-band h2{
  font-size:30px;
  font-weight:700;
  line-height:1.35;
  margin-bottom:12px;
}
.cta-band p{color:#33425E;max-width:560px;margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-side{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sd-1);
}
.cta-side h3{font-size:17px;font-weight:600;margin-bottom:14px;}
.cta-side ul li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  color:var(--muted);
  padding:9px 0;
  border-bottom:1px solid var(--line-soft);
}
.cta-side ul li:last-child{border-bottom:0;}
.cta-side ul li::before{
  content:"";
  width:6px;height:6px;
  margin-top:10px;
  border-radius:50%;
  background:var(--brand);
  flex-shrink:0;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:#93A4C4;
  padding:72px 0 0;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  margin:18px 0 14px;
  font-size:14px;
  color:#8FA0C0;
  line-height:1.9;
  max-width:330px;
}
.fnote{font-size:13px;color:#6E7E9E;}
.site-footer h4{
  font-size:15px;
  color:#fff;
  font-weight:600;
  margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:#93A4C4;
  border-bottom:1px solid transparent;
  align-self:flex-start;
}
.footer-links a:hover{color:#fff;border-bottom-color:var(--neon);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:#6E7E9E;
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 24px;}
  .banner-inner{padding:64px 24px 60px;}
}
@media (max-width:1024px){
  :root{--sec:64px;}
  .nav-links a{padding:20px 10px;font-size:14px;}
  .banner-inner h1{font-size:36px;}
  .intro-grid{grid-template-columns:1fr;gap:36px;}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:768px){
  :root{--sec:48px;}
  .container{padding:0 16px;}
  .banner-inner{padding:52px 16px 48px;}
  .banner-inner h1{font-size:28px;}
  .banner-inner p{font-size:15px;}
  .site-header{position:sticky;}
  .nav-inner{gap:12px;justify-content:space-between;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .nav-scan{display:none;}
  .nav-actions .btn-primary{display:none;}
  .nav-links{
    position:absolute;
    top:64px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:10px 0 18px;
    background:var(--dark-2);
    border-bottom:1px solid rgba(255,255,255,.08);
    box-shadow:0 18px 32px rgba(6,12,26,.4);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{
    padding:15px 20px 15px 22px;
    font-size:15px;
    border-left:3px solid transparent;
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{
    border-left-color:var(--neon);
    background:rgba(43,240,196,.06);
    color:#fff;
  }
  .device-grid{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .fit-panel{padding:26px 20px;}
  .sec-head h2{font-size:24px;}
  .faq-q{font-size:15.5px;padding:18px 2px;}
  .cta-band{padding:32px 22px;}
  .cta-band h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;}
  .site-footer{margin-top:64px;padding-top:52px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .banner-inner h1{font-size:26px;}
  .banner-inner{padding:44px 16px 42px;}
  .device-card{padding:20px;}
  .kv-row{flex-direction:column;gap:4px;}
  .kv-row dd{text-align:left;}
  .logo-text{font-size:14.5px;}
  .intro-figure figcaption{font-size:12.5px;}
}