/* roulang page: index */
:root{
  --bg-deep:#0A0918;
  --bg-base:#100E22;
  --surface:#171430;
  --surface-2:#1E1A3C;
  --surface-3:#251F49;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#7C5CFF;
  --brand-600:#6746F0;
  --brand-soft:rgba(124,92,255,.14);
  --brand-link:#9B85FF;
  --accent:#FFBF5C;
  --nebula:#FF7AB8;
  --text:#EDEAF7;
  --text-dim:#A9A3C7;
  --text-mute:#756F96;
  --ok:#3DD68C;
  --warn:#FFB020;
  --danger:#FF6B6B;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-panel:18px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset,0 16px 36px -26px rgba(0,0,0,.9);
  --shadow-2:0 22px 48px -28px rgba(0,0,0,.95),0 0 0 1px rgba(124,92,255,.28);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(900px 520px at 82% -6%, rgba(124,92,255,.16), transparent 62%),
    radial-gradient(760px 460px at 6% 12%, rgba(255,122,184,.07), transparent 60%),
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size:auto,auto,8px 8px,8px 8px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:var(--brand-link);text-decoration:none;text-underline-offset:3px;transition:color .2s var(--ease)}
a:hover{color:var(--text);text-decoration:underline}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;color:var(--text)}
p{margin:0 0 1.2em}
ul,ol{margin:0 0 1.2em;padding-left:1.2em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部公告条 ---------- */
.topbar{background:var(--surface-2);border-bottom:1px solid var(--line);font-size:13px}
.topbar-inner{display:flex;align-items:center;gap:14px;min-height:36px;flex-wrap:wrap;padding:4px 0}
.topbar .msg{color:var(--text-dim);flex:1 1 240px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:999px;font-size:11.5px;line-height:1.6;background:var(--brand-soft);border:1px solid var(--line-strong);color:var(--text)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--ok);flex:none}
.dot.warn{background:var(--warn)}
.dot.new{background:var(--nebula)}
.countdown{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--accent);letter-spacing:.04em}
.countdown-wrap{color:var(--text-mute);white-space:nowrap}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(16,14,34,.96);border-bottom:1px solid transparent;transition:border-color .2s var(--ease),background .2s var(--ease)}
.site-header.is-stuck{border-bottom-color:var(--line);background:rgba(10,9,24,.96)}
.nav{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;flex:none}
.brand:hover{color:var(--text);text-decoration:none}
.brand-mark{width:34px;height:34px;flex:none}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.02em;line-height:1.25}
.brand-text small{display:block;font-size:11px;font-weight:400;color:var(--text-mute);letter-spacing:.06em}
.nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0;flex:1;justify-content:center}
.nav-link{display:inline-flex;align-items:center;height:44px;padding:0 12px;font-size:15px;color:var(--text-dim);position:relative;border-radius:8px;transition:color .2s var(--ease),background .2s var(--ease)}
.nav-link:hover{color:var(--text);background:var(--surface-2);text-decoration:none}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.burger{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:var(--surface-2);border:1px solid var(--line-strong);border-radius:var(--r-btn);cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text)}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;font-size:15px;font-weight:600;border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;text-decoration:none;transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease)}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.18) inset}
.btn-primary:hover{background:var(--brand-600);color:#fff}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--text)}
.btn-block{width:100%}
.link-more{font-size:14px;font-weight:600;color:var(--brand-link)}
.link-more::after{content:" →"}

/* ---------- 通用区块 ---------- */
.section{padding:64px 0;border-top:1px solid var(--line);position:relative}
.section:first-of-type{border-top:0}
@media(min-width:768px){.section{padding:80px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.section.alt{background:var(--bg-base)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.section-title{position:relative;padding-left:14px;font-size:26px;line-height:1.35}
.section-title::before{content:"";position:absolute;left:0;top:6px;width:3px;height:18px;border-radius:2px;background:var(--brand)}
@media(min-width:1024px){.section-title{font-size:29px}}
.section-sub{font-size:14px;color:var(--text-dim);max-width:640px;margin:10px 0 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.1em;color:var(--text-mute);text-transform:uppercase}
.section-body p{color:var(--text-dim);font-size:16px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:56px 0 60px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(2px 2px at 12% 22%,rgba(255,255,255,.5),transparent 60%),radial-gradient(2px 2px at 68% 12%,rgba(255,255,255,.35),transparent 60%),radial-gradient(1.6px 1.6px at 84% 62%,rgba(255,255,255,.4),transparent 60%),radial-gradient(1.6px 1.6px at 34% 78%,rgba(255,255,255,.3),transparent 60%);opacity:.7;pointer-events:none;animation:breathe 9s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:.62}50%{opacity:.66}}
.hero-grid{position:relative;display:grid;gap:34px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;gap:44px}}
.hero h1{font-size:34px;line-height:1.25}
@media(min-width:768px){.hero h1{font-size:38px}}
@media(min-width:1024px){.hero h1{font-size:41px}}
.hero-sub{margin:16px 0 0;font-size:17px;color:var(--text-dim);max-width:600px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 0}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin:26px 0 0;padding-top:22px;border-top:1px solid var(--line)}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim)}
.trust-item svg{width:18px;height:18px;flex:none;color:var(--brand)}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border:1px solid var(--line-strong);border-radius:16px;box-shadow:0 0 0 1px rgba(124,92,255,.22),0 26px 60px -34px rgba(0,0,0,.95)}
.hero-float{position:absolute;right:-8px;bottom:-22px;width:190px;padding:14px 16px;background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--r-card);box-shadow:var(--shadow-1)}
@media(min-width:1024px){.hero-float{right:-16px;bottom:-16px}}
.hero-float .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;color:var(--accent);line-height:1}
.hero-float .lbl{font-size:12px;color:var(--text-dim);margin-top:6px}

/* ---------- 指标看板 ---------- */
.stats-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.stats-grid{grid-template-columns:repeat(3,1fr)}}
.stat-card{position:relative;padding:22px 20px 18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.stat-card::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,var(--brand),transparent)}
.stat-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.4);box-shadow:var(--shadow-2)}
.stat-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.stat-label{font-size:12.5px;color:var(--text-dim)}
.stat-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:38px;font-weight:700;line-height:1;margin:14px 0 6px;color:var(--text)}
.stat-num .unit{font-size:15px;color:var(--text-dim);margin-left:4px;font-weight:500}
.stat-note{font-size:12px;color:var(--text-mute)}
.trend{display:flex;align-items:flex-end;gap:3px;height:16px;margin-top:14px}
.trend i{display:block;width:100%;background:var(--brand);opacity:.35;border-radius:2px}

/* ---------- 服务矩阵 ---------- */
.matrix{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.matrix{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.matrix{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.4);box-shadow:var(--shadow-2)}
.matrix-large{grid-column:span 1}
@media(min-width:768px){.matrix-large{grid-column:span 2;display:grid;grid-template-columns:1fr 1fr;align-items:stretch}}
.matrix-large img{width:100%;height:100%;min-height:200px;object-fit:cover;border-radius:0}
.matrix-large .card-body{padding:26px 24px}
.matrix-large h3{font-size:20px}
.matrix-large p{font-size:14.5px;color:var(--text-dim);margin:12px 0 0}
.card-body{padding:22px 20px}
.card-body h3{font-size:18px}
.card-body p{font-size:14.5px;color:var(--text-dim);margin:10px 0 0}
.icon-line{width:24px;height:24px;color:var(--brand);margin-bottom:14px}
.row-list{display:grid;gap:14px;margin-top:20px}
@media(min-width:1024px){.row-list{grid-template-columns:repeat(3,1fr)}}
.row-card{display:flex;align-items:center;gap:16px;padding:18px 20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);text-decoration:none;color:var(--text);transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease)}
.row-card:hover{background:var(--surface-2);border-color:rgba(124,92,255,.4);color:var(--text);text-decoration:none}
.row-num{font-family:var(--font-mono);font-size:14px;color:var(--brand);flex:none}
.row-card .rc-title{font-size:16px;font-weight:600;line-height:1.5}
.row-card .rc-desc{font-size:13px;color:var(--text-dim);margin-top:2px}
.row-card .rc-arrow{margin-left:auto;color:var(--text-mute);transition:transform .2s var(--ease),color .2s var(--ease)}
.row-card:hover .rc-arrow{transform:translateX(4px);color:var(--brand)}

/* ---------- 结果对比 ---------- */
.compare-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.compare-grid{grid-template-columns:1fr 1fr}}
.compare-card{padding:24px 22px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--surface)}
.compare-card.best{background:var(--brand-soft);border-color:rgba(124,92,255,.45)}
.compare-card h3{font-size:17px;color:var(--text-mute);margin-bottom:16px}
.compare-card.best h3{color:var(--text)}
.compare-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.compare-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-dim);line-height:1.7}
.compare-list .mk{flex:none;font-family:var(--font-mono);font-weight:700}
.mk.ok{color:var(--ok)}
.mk.off{color:var(--text-mute)}
.compare-list em{font-style:normal;font-family:var(--font-mono);color:var(--accent);font-weight:700}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);text-decoration:none;color:var(--text);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.news-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.4);box-shadow:var(--shadow-2);color:var(--text);text-decoration:none}
.news-card .cover{aspect-ratio:16/10;width:100%;object-fit:cover;border-radius:0;background:linear-gradient(135deg,var(--surface-3),var(--surface-2))}
.news-card .nc-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.tag{display:inline-flex;align-items:center;padding:2px 10px;border-radius:999px;font-size:11.5px;background:var(--surface-2);border:1px solid var(--line-strong);color:var(--text-dim);align-self:flex-start}
.news-card h3{font-size:17px;line-height:1.55;margin:12px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3{color:var(--brand-link)}
.news-card .excerpt{font-size:14px;color:var(--text-dim);margin:10px 0 0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.nc-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-mute);font-family:var(--font-mono)}
.empty-state{padding:52px 20px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--r-panel);background:var(--surface)}
.empty-state svg{width:34px;height:34px;color:var(--brand);margin:0 auto 14px}
.empty-state p{color:var(--text-dim);font-size:15px;margin:0 0 18px}

/* ---------- FAQ ---------- */
.faq{border:1px solid var(--line);border-radius:var(--r-panel);background:var(--surface);overflow:hidden}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;cursor:pointer;color:var(--text);min-height:44px;transition:background .2s var(--ease)}
.faq-q:hover{background:var(--surface-2)}
.faq-item.is-open .faq-q{background:var(--surface-2)}
.faq-q .plus{flex:none;width:20px;height:20px;position:relative;transition:transform .22s var(--ease)}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-q .plus::before{left:0;top:9px;width:20px;height:2px}
.faq-q .plus::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{margin:0;padding:0 22px 18px;font-size:15px;color:var(--text-dim);line-height:1.8}

/* ---------- 表单 ---------- */
.cta-panel{display:grid;gap:26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-panel);padding:26px 22px;box-shadow:var(--shadow-1)}
@media(min-width:1024px){.cta-panel{grid-template-columns:7fr 5fr;padding:34px 32px;gap:34px}}
.field{margin-bottom:16px}
.field label{display:block;font-size:12.5px;color:var(--text-dim);margin-bottom:8px;letter-spacing:.02em}
.field input,.field select,.field textarea{width:100%;min-height:44px;padding:11px 14px;background:var(--surface-2);border:1px solid var(--line-strong);border-radius:var(--r-input);color:var(--text);transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(124,92,255,.18)}
.field.has-error input,.field.has-error select{border-color:var(--danger)}
.field .err{display:none;font-size:12px;color:var(--danger);margin-top:6px}
.field.has-error .err{display:block}
.form-note{font-size:12px;color:var(--text-mute);margin:14px 0 0;line-height:1.7}
.side-card{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 20px}
.side-card ul{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:12px}
.side-card li{font-size:14px;color:var(--text-dim);display:flex;gap:10px;line-height:1.7}
.side-card li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex:none}
.side-card .resp{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-mute)}
.success-card{display:none;padding:30px 24px;text-align:center;background:var(--surface-2);border:1px solid rgba(61,214,140,.4);border-radius:var(--r-card)}
.success-card.is-show{display:block}
.success-card svg{width:38px;height:38px;color:var(--ok);margin:0 auto 14px}
.success-card h3{font-size:18px;margin-bottom:8px}
.success-card p{font-size:14px;color:var(--text-dim);margin:0}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;background:var(--bg-deep);border-top:1px solid var(--line);padding:56px 0 26px}
.foot-grid{display:grid;gap:30px;grid-template-columns:1fr}
@media(min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.foot-col h4{font-size:14px;color:var(--brand-link);margin-bottom:16px;letter-spacing:.04em}
.foot-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.foot-col a,.foot-col p{font-size:14px;color:var(--text-dim)}
.foot-col a:hover{color:var(--text)}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand .brand-text{font-size:15px}
.foot-desc{font-size:13.5px;color:var(--text-mute);line-height:1.8;margin:0}
.foot-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);text-align:center;font-size:12px;color:var(--text-mute);line-height:1.9}

/* ---------- 移动抽屉 ---------- */
.drawer-overlay{position:fixed;inset:0;background:rgba(6,5,16,.6);opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);z-index:80}
.drawer{position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;background:var(--surface);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .24s var(--ease);z-index:90;display:flex;flex-direction:column;padding:18px;overflow-y:auto}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;background:var(--surface-2);border:1px solid var(--line-strong);border-radius:var(--r-btn);font-size:18px;cursor:pointer;color:var(--text)}
.drawer-nav{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:6px}
.drawer-nav a{display:block;padding:13px 12px;font-size:15.5px;color:var(--text-dim);border-radius:var(--r-btn)}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--surface-2);color:var(--text);text-decoration:none}
.drawer-foot{margin-top:auto;padding-top:20px;display:grid;gap:12px}
.drawer-count{margin-top:14px;font-size:12.5px;color:var(--text-mute)}
@media(max-width:899px){
  .nav-list,.nav-actions{display:none}
  .burger{display:inline-flex}
  .nav{justify-content:space-between}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: article */
:root{
  --bg-deep:#0A0918;
  --bg-base:#100E22;
  --surface:#171430;
  --surface-2:#1E1A3C;
  --surface-3:#251F49;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#7C5CFF;
  --brand-600:#6746F0;
  --brand-soft:rgba(124,92,255,.14);
  --accent:#FFBF5C;
  --nebula:#FF7AB8;
  --text:#EDEAF7;
  --text-dim:#A9A3C7;
  --text-mute:#756F96;
  --link:#9B85FF;
  --ok:#3DD68C;
  --warn:#FFB020;
  --danger:#FF6B6B;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:999px;
  --r-panel:18px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset, 0 16px 36px -26px rgba(0,0,0,.9);
  --shadow-2:0 22px 48px -28px rgba(0,0,0,.95), 0 0 0 1px rgba(124,92,255,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:200ms;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(1100px 560px at 10% -8%, rgba(124,92,255,.12), transparent 62%),
    radial-gradient(900px 480px at 92% 4%, rgba(255,122,184,.06), transparent 60%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,8px 8px,8px 8px;
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:var(--link);text-decoration:none;text-underline-offset:3px}
a:hover{text-decoration:underline}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,9,24,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.site-header.is-scrolled{background:rgba(10,9,24,.99);box-shadow:0 16px 34px -28px rgba(0,0,0,.98)}
.nav{display:flex;align-items:center;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{width:32px;height:32px;flex:none}
.brand-text{display:flex;flex-direction:column;font-size:17px;font-weight:700;line-height:1.2;letter-spacing:.01em}
.brand-text small{font-size:11px;font-weight:400;color:var(--text-mute);letter-spacing:.06em;margin-top:2px}
.nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0 auto}
.nav-link{position:relative;display:inline-block;padding:10px 12px;font-size:15px;color:var(--text-dim);border-radius:8px;transition:color var(--t) var(--ease),background var(--t) var(--ease)}
.nav-link:hover{color:var(--text);background:var(--surface-2);text-decoration:none}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.18)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-block{width:100%}
.link-more{font-size:14px;font-weight:600;color:var(--link);border-bottom:1px solid rgba(155,133,255,.5);padding-bottom:2px}
.link-more:hover{text-decoration:none;border-bottom-color:var(--link)}

.burger{
  display:none;position:relative;width:44px;height:44px;flex:none;
  border:1px solid var(--line-strong);border-radius:10px;background:var(--surface-2);cursor:pointer;
}
.burger span{position:absolute;left:13px;right:13px;top:50%;height:1.8px;background:var(--text);border-radius:2px;transform:translateY(-50%);transition:background var(--t) var(--ease)}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;right:0;height:1.8px;background:var(--text);border-radius:2px;transition:transform var(--t) var(--ease)}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger.is-open span{background:transparent}
.burger.is-open span::before{transform:translateY(6px) rotate(45deg)}
.burger.is-open span::after{transform:translateY(-6px) rotate(-45deg)}

.drawer-mask{position:fixed;inset:0;background:rgba(5,4,14,.68);opacity:0;visibility:hidden;z-index:70;transition:opacity var(--t) var(--ease),visibility var(--t)}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;z-index:80;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform 240ms var(--ease);
  padding:18px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);background:var(--surface-2);color:var(--text-dim);font-size:20px;line-height:1;cursor:pointer;transition:color var(--t),border-color var(--t)}
.drawer-close:hover{color:var(--text);border-color:var(--brand)}
.drawer-list{list-style:none;display:flex;flex-direction:column;gap:6px}
.drawer-list a{display:block;padding:12px 12px;border-radius:10px;font-size:15px;color:var(--text-dim);transition:background var(--t),color var(--t)}
.drawer-list a:hover{background:var(--surface-2);color:var(--text);text-decoration:none}
.drawer-cta{margin-top:auto}
.drawer-note{font-size:12px;color:var(--text-mute);line-height:1.8;border-top:1px solid var(--line);padding-top:14px}

@media(max-width:899px){
  .nav-list{display:none}
  .nav-actions .btn{display:none}
  .burger{display:block}
  .brand-text{font-size:15px}
  .brand-text small{font-size:10px}
}

/* ---------- Article Hero ---------- */
.article-hero{
  position:relative;
  padding:34px 0 32px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg, rgba(10,9,24,.82), rgba(10,9,24,.96)), url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-mute);margin-bottom:18px}
.breadcrumb a{color:var(--text-dim)}
.breadcrumb a:hover{color:var(--brand);text-decoration:none}
.bc-sep{color:var(--text-mute)}
.bc-current{color:var(--text-dim)}
.article-head{max-width:860px}
.badge{display:inline-flex;align-items:center;gap:7px;height:26px;padding:0 12px;border-radius:var(--r-badge);font-size:12px;line-height:1;font-weight:500;letter-spacing:.02em}
.badge .dot{width:6px;height:6px;border-radius:50%;background:currentColor;flex:none}
.badge-brand{background:var(--brand-soft);color:#BCADFF;border:1px solid rgba(124,92,255,.32)}
.badge-new{background:rgba(255,122,184,.14);color:#FFA9CE;border:1px solid rgba(255,122,184,.3)}
.badge-ok{background:rgba(61,214,140,.13);color:#7BE6B4;border:1px solid rgba(61,214,140,.3)}
.article-title{
  margin:16px 0 18px;
  font-size:clamp(26px,4.2vw,40px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-mute)}
.article-meta .sep{color:var(--text-mute);opacity:.7}
.article-meta .mono{font-family:var(--font-mono);color:var(--accent);font-variant-numeric:tabular-nums}

/* ---------- Article Body ---------- */
.article-main{padding:44px 0 0}
.article-body{
  max-width:820px;margin:0 auto;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  box-shadow:var(--shadow-1);
  padding:44px;
  font-size:17px;line-height:1.9;color:var(--text-dim);
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;padding-left:14px;
  font-size:26px;line-height:1.4;font-weight:700;color:var(--text);
  margin:2.2em 0 .8em;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.32em;width:3px;height:18px;border-radius:2px;background:var(--brand)}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--text);margin:1.6em 0 .6em}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em}
.article-body li{margin-bottom:.4em}
.article-body ol{list-style:decimal}
.article-body ol li::marker{color:var(--brand);font-family:var(--font-mono)}
.article-body ul li::marker{color:var(--brand)}
.article-body strong{color:var(--text);font-weight:600}
.article-body a{color:var(--link);text-decoration:underline;text-underline-offset:3px}
.article-body blockquote{
  margin:1.6em 0;padding:16px 18px;
  border-left:3px solid var(--brand);
  background:var(--surface-2);
  border-radius:0 12px 12px 0;
  color:var(--text-dim);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.5em auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-mute);text-align:center;margin-top:12px}
.article-body table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;font-size:15px;margin:1.6em 0}
.article-body th{background:var(--surface-2);color:var(--text);font-weight:600;text-align:left;padding:12px 14px;white-space:nowrap}
.article-body td{padding:12px 14px;border-top:1px solid var(--line);white-space:nowrap}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-body code{font-family:var(--font-mono);font-size:.92em;background:var(--surface-2);padding:2px 6px;border-radius:6px;color:#FFD79A}

.empty-state{
  max-width:820px;margin:0 auto;text-align:center;
  padding:64px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-panel);
  background:var(--surface);
}
.empty-state svg{width:40px;height:40px;margin:0 auto 6px;opacity:.85}
.empty-state p{margin:10px 0 22px;font-size:15px;color:var(--text-dim)}

/* ---------- Sections ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.section-title{position:relative;padding-left:14px;font-size:26px;font-weight:700;line-height:1.35;color:var(--text)}
.section-title::before{content:"";position:absolute;left:0;top:.34em;width:3px;height:18px;border-radius:2px;background:var(--brand)}
.related{padding:72px 0 0}
.card-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.post-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;color:var(--text);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.5);box-shadow:var(--shadow-2);text-decoration:none}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(140deg,var(--surface-2),var(--bg-deep))}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 420ms var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{display:flex;flex-direction:column;gap:10px;padding:16px 18px 18px;flex:1}
.post-tag{align-self:flex-start;font-size:11px;padding:3px 10px;border-radius:var(--r-badge);background:var(--brand-soft);border:1px solid rgba(124,92,255,.3);color:#BCADFF}
.post-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--t)}
.post-card:hover .post-title{color:var(--link)}
.post-excerpt{margin:0;font-size:14px;line-height:1.7;color:var(--text-dim);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:10px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-mute)}
.post-foot .arrow{transition:transform var(--t) var(--ease)}
.post-card:hover .post-foot .arrow{transform:translateX(4px);color:var(--link)}

/* ---------- CTA band ---------- */
.cta-band{padding:80px 0 0}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:32px;border:1px solid var(--line);border-radius:var(--r-panel);
  background:linear-gradient(135deg,var(--surface) 0%,var(--surface-2) 100%);
}
.cta-inner h2{font-size:22px;line-height:1.4;font-weight:700;color:var(--text);margin-bottom:8px}
.cta-inner p{margin:0;font-size:15px;color:var(--text-dim);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{margin-top:88px;padding:56px 0 28px;background:var(--bg-deep);border-top:1px solid var(--line)}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand .brand-mark{width:28px;height:28px}
.foot-brand .brand-text{font-size:16px}
.foot-desc{max-width:340px;margin:0;font-size:14px;line-height:1.8;color:var(--text-dim)}
.foot-col h4{margin-bottom:14px;font-size:14px;font-weight:600;color:var(--brand);letter-spacing:.02em}
.foot-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.foot-col a,.foot-col p{margin:0;font-size:14px;color:var(--text-dim)}
.foot-col a:hover{color:var(--text);text-decoration:none}
.foot-bottom{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);text-align:center;font-size:12px;line-height:1.9;color:var(--text-mute)}

/* ---------- Responsive ---------- */
@media(max-width:1023px){
  .article-body{padding:34px 28px}
  .article-hero{padding:28px 0 26px}
  .related{padding-top:56px}
  .cta-band{padding-top:64px}
  .site-footer{margin-top:64px}
}
@media(max-width:639px){
  .article-body{padding:24px 18px;font-size:16px;border-radius:14px}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .article-main{padding-top:28px}
  .article-hero{padding:22px 0 22px}
  .article-title{font-size:25px}
  .cta-inner{padding:24px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .section-title{font-size:22px}
  .site-footer{padding:44px 0 24px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
*,*::before,*::after{box-sizing:border-box}

:root{
  --bg-deep:#0A0918;
  --bg-base:#100E22;
  --surface:#171430;
  --surface-2:#1E1A3C;
  --surface-3:#251F49;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#7C5CFF;
  --brand-600:#6746F0;
  --brand-soft:rgba(124,92,255,.14);
  --accent:#FFBF5C;
  --nebula:#FF7AB8;
  --text:#EDEAF7;
  --text-dim:#A9A3C7;
  --text-mute:#756F96;
  --link:#9B85FF;
  --ok:#3DD68C;
  --warn:#FFB020;
  --danger:#FF6B6B;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:18px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset,0 16px 36px -26px rgba(0,0,0,.9);
  --shadow-2:0 22px 48px -28px rgba(0,0,0,.95),0 0 0 1px rgba(124,92,255,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(900px 520px at 10% -8%, rgba(124,92,255,.16), transparent 62%),
    radial-gradient(760px 460px at 94% 2%, rgba(255,122,184,.08), transparent 60%),
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size:auto,auto,8px 8px,8px 8px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block}
a{color:var(--link);text-decoration:underline;text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 顶部公告条 ---------- */
.topbar{background:var(--surface-2);border-bottom:1px solid var(--line);font-size:13px;color:var(--text-dim)}
.topbar-inner{display:flex;align-items:center;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px}
.topbar-msg{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-dim)}
.topbar-clock{flex:0 0 auto;color:var(--text-mute)}
.topbar-clock .mono{color:var(--accent);font-weight:700;letter-spacing:.03em}
@media(max-width:639px){.topbar-msg{display:none}}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12px;line-height:1.7;border:1px solid var(--line);background:var(--surface);color:var(--text-dim);white-space:nowrap}
.dot{width:6px;height:6px;border-radius:50%;background:var(--text-mute);flex:0 0 auto;display:inline-block}
.badge-ok{color:var(--ok);border-color:rgba(61,214,140,.3);background:rgba(61,214,140,.1)}
.badge-ok .dot{background:var(--ok)}
.badge-warn{color:var(--warn);border-color:rgba(255,176,32,.3);background:rgba(255,176,32,.1)}
.badge-warn .dot{background:var(--warn)}
.badge-new{color:var(--nebula);border-color:rgba(255,122,184,.3);background:rgba(255,122,184,.1)}
.badge-new .dot{background:var(--nebula)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(10,9,24,.96);border-bottom:1px solid transparent;transition:border-color .24s var(--ease),background-color .24s var(--ease)}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(10,9,24,.98)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px}

.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{width:36px;height:36px;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.25;letter-spacing:.01em}
.brand-text small{font-size:11px;font-weight:400;color:var(--text-mute);letter-spacing:.08em;margin-top:2px}

.nav-list{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:68px;padding:0 12px;font-size:15px;color:var(--text-dim);text-decoration:none;transition:color .2s var(--ease);white-space:nowrap}
.nav-link:hover{color:var(--text);text-decoration:none}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:16px;height:2px;border-radius:2px;background:var(--brand)}

.nav-actions{display:flex;align-items:center;gap:10px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;font-size:15px;font-weight:600;line-height:1;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;text-decoration:none;transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.18) inset}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:0 14px;font-size:14px}
.nav-actions .btn{min-height:40px}

.burger{display:none;width:44px;height:44px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:transparent;cursor:pointer;align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:2px;background:var(--text);position:relative;border-radius:2px}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger:hover{border-color:var(--brand);background:var(--brand-soft)}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;background:var(--surface);border-left:1px solid var(--line);z-index:90;padding:20px;display:none;flex-direction:column;gap:18px;overflow-y:auto;transform:translateX(100%);visibility:hidden;transition:transform .24s var(--ease),visibility .24s var(--ease)}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line-strong);background:transparent;color:var(--text-dim);font-size:20px;line-height:1;cursor:pointer}
.drawer-close:hover{color:var(--text);border-color:var(--brand)}
.drawer-clock{font-size:13px;color:var(--text-mute)}
.drawer-clock .mono{color:var(--accent);font-weight:700}
.drawer-nav{display:grid;gap:4px}
.drawer-nav a{display:block;padding:12px 14px;border-radius:var(--radius-sm);font-size:15px;color:var(--text-dim);text-decoration:none;transition:background-color .2s,color .2s}
.drawer-nav a:hover{background:var(--surface-2);color:var(--text)}
.drawer-nav a.is-active{background:var(--surface-2);color:#fff;font-weight:600}
.drawer-cta{margin-top:auto}
.drawer-mask{position:fixed;inset:0;background:rgba(6,5,16,.72);z-index:80;opacity:0;pointer-events:none;transition:opacity .24s var(--ease);display:none}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

@media(max-width:899px){
  .nav-list,.nav-actions .btn{display:none}
  .burger{display:flex}
  .drawer{display:flex}
  .drawer-mask{display:block}
  .brand-text{font-size:15px}
  .brand-text small{font-size:10px}
}

/* ---------- 区块 ---------- */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--bg-base);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.section-head{max-width:780px;margin-bottom:34px}
.section-head .lead{margin:14px 0 0 14px;color:var(--text-dim);font-size:16px}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--brand);margin:0 0 10px;font-weight:600}

.h-bar{position:relative;padding-left:14px;font-size:clamp(22px,2.4vw,30px);line-height:1.36;font-weight:700;letter-spacing:.01em}
.h-bar::before{content:"";position:absolute;left:0;top:.34em;width:3px;height:18px;border-radius:2px;background:var(--brand)}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:48px 0 64px;overflow:hidden}
@media(min-width:1024px){.hero{padding:76px 0 92px}}
.hero-grid{display:grid;gap:36px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr 1fr;gap:56px}}

.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;border:1px solid rgba(124,92,255,.3);background:var(--brand-soft);font-size:12.5px;color:#C9BDFF}
.hero h1{margin:18px 0 0;font-size:clamp(30px,4.2vw,42px);line-height:1.25;font-weight:700;letter-spacing:.01em}
.hero-sub{margin:16px 0 0;font-size:17px;line-height:1.8;color:var(--text-dim);max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:14px 22px;margin-top:30px;font-size:13px;color:var(--text-dim)}
.hero-trust li{display:flex;align-items:center;gap:8px}
.hero-trust svg{width:16px;height:16px;flex:0 0 auto}

.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;border:1px solid rgba(124,92,255,.35);box-shadow:0 30px 70px -40px rgba(124,92,255,.75);background:var(--surface-2)}
.float-card{position:absolute;right:-14px;bottom:-16px;display:flex;align-items:center;gap:12px;max-width:236px;padding:14px 18px;background:var(--surface);border:1px solid var(--line-strong);border-radius:14px;box-shadow:var(--shadow-1)}
.float-num{font-family:var(--font-mono);font-size:34px;line-height:1;font-weight:700;color:var(--accent)}
.float-label{font-size:12px;line-height:1.6;color:var(--text-dim)}
@media(max-width:639px){.float-card{right:8px;bottom:-14px;max-width:210px;padding:12px 14px}.float-num{font-size:28px}}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;display:grid;gap:20px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:23px;top:14px;bottom:14px;width:1px;background:linear-gradient(180deg,var(--brand),rgba(124,92,255,.05))}
.timeline-item{position:relative;display:grid;grid-template-columns:48px 1fr;gap:18px;align-items:start}
.tl-num{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:var(--surface);border:1px solid var(--line-strong);font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--accent);position:relative;z-index:1}
.tl-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow-1);transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.tl-body:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.4);box-shadow:var(--shadow-2)}
.tl-body h3{font-size:20px;font-weight:600;line-height:1.5}
.tl-body p{margin-top:10px;font-size:15.5px;color:var(--text-dim);line-height:1.8}
.tl-body .btn{margin-top:16px}
.tl-tag{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:12.5px;color:var(--text-mute)}

/* ---------- 行式编号卡 ---------- */
.tip-list{display:grid;gap:14px}
.tip-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;padding:18px 22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:inherit;transition:background-color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease)}
.tip-row:hover{background:var(--surface-2);border-color:rgba(124,92,255,.42);transform:translateY(-2px);text-decoration:none}
.tip-num{font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--brand);min-width:32px}
.tip-text h3{font-size:17px;font-weight:600;line-height:1.5}
.tip-text p{margin-top:4px;font-size:14.5px;color:var(--text-dim)}
.tip-arrow{color:var(--text-mute);transition:transform .22s var(--ease),color .22s var(--ease);font-size:18px;line-height:1}
.tip-row:hover .tip-arrow{transform:translateX(4px);color:var(--brand)}
@media(max-width:559px){.tip-row{grid-template-columns:auto 1fr;gap:14px;padding:16px 18px}.tip-arrow{display:none}}

/* ---------- 图文块 ---------- */
.split{display:grid;gap:32px;align-items:center}
@media(min-width:900px){.split{grid-template-columns:1fr 1fr;gap:52px}}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface-2);box-shadow:var(--shadow-1)}
.split-body .lead{margin:16px 0 0 14px;color:var(--text-dim);font-size:16px}
.check-list{display:grid;gap:12px;margin-top:22px}
.check-list li{display:grid;grid-template-columns:22px 1fr;gap:12px;font-size:15.5px;color:var(--text-dim);line-height:1.8}
.check-list svg{width:20px;height:20px;margin-top:5px}
.split-note{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:12.5px;color:var(--text-dim)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);margin-top:6px}
.faq-item{border-bottom:1px solid var(--line);transition:background-color .22s var(--ease),border-radius .22s var(--ease)}
.faq-item.is-open{background:var(--surface-2);border-radius:12px;border-bottom-color:transparent}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;padding:18px 8px;background:none;border:0;color:var(--text);font-size:17px;font-weight:600;text-align:left;cursor:pointer;transition:color .2s var(--ease)}
.faq-q:hover{color:var(--link)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);transform:translate(-50%,-50%);border-radius:2px}
.faq-icon::before{width:14px;height:1.6px}
.faq-icon::after{width:1.6px;height:14px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a-inner{padding:0 8px 18px;font-size:15px;line-height:1.85;color:var(--text-dim)}

/* ---------- 通栏 CTA ---------- */
.cta-band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0}
@media(min-width:1024px){.cta-band{padding:72px 0}}
.cta-inner{display:grid;gap:24px;align-items:center}
@media(min-width:900px){.cta-inner{grid-template-columns:1fr auto;gap:40px}}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);line-height:1.36;font-weight:700}
.cta-inner p{margin-top:12px;color:var(--text-dim);font-size:15.5px;max-width:44em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:56px 0 24px;font-size:14px}
.foot-grid{display:grid;gap:32px}
@media(min-width:768px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
@media(max-width:479px){.foot-grid{grid-template-columns:1fr}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand .brand-text{font-size:15px}
.foot-desc{margin:0;color:var(--text-dim);line-height:1.85;max-width:36em}
.foot-col h4{margin:0 0 14px;font-size:14px;font-weight:600;color:var(--link);letter-spacing:.02em}
.foot-col ul{display:grid;gap:10px}
.foot-col li{color:var(--text-dim);line-height:1.7}
.foot-col a{color:var(--text-dim);text-decoration:none;transition:color .2s var(--ease)}
.foot-col a:hover{color:var(--text)}
.foot-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);text-align:center;font-size:12px;line-height:2;color:var(--text-mute)}

/* ---------- 动效降级 ---------- */
@media(prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .tl-body:hover,.tip-row:hover,.btn:hover{transform:none !important}
}

/* roulang page: category2 */
:root{
  --bg-deep:#0A0918;
  --bg-base:#100E22;
  --surface:#171430;
  --surface-2:#1E1A3C;
  --surface-3:#251F49;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#7C5CFF;
  --brand-600:#6746F0;
  --brand-soft:rgba(124,92,255,.14);
  --brand-link:#9B85FF;
  --accent:#FFBF5C;
  --nebula:#FF7AB8;
  --text:#EDEAF7;
  --text-dim:#A9A3C7;
  --text-mute:#756F96;
  --ok:#3DD68C;
  --warn:#FFB020;
  --danger:#FF6B6B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-lg:18px;
  --radius-pill:999px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset, 0 16px 36px -26px rgba(0,0,0,.9);
  --shadow-2:0 22px 48px -28px rgba(0,0,0,.95), 0 0 0 1px rgba(124,92,255,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(124,92,255,.12), transparent 62%),
    radial-gradient(760px 460px at 88% 2%, rgba(255,122,184,.06), transparent 60%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,8px 8px,8px 8px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-link);text-decoration:none;text-underline-offset:3px;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);}
a:hover{text-decoration:underline;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){ .container{padding:0 32px;} }

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.18) inset;}
.btn-primary:hover{background:var(--brand-600);color:#fff;text-decoration:none;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text);}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--text);text-decoration:none;}
.btn-ghost{background:transparent;color:var(--brand-link);padding:0 4px;min-height:44px;text-decoration:underline;text-underline-offset:3px;}
.btn-ghost:hover{color:#B5A4FF;}
.btn-block{width:100%;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(10,9,24,.94);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),background-color .24s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(10,9,24,.97);}
.nav{display:flex;align-items:center;gap:24px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.brand:hover{text-decoration:none;}
.brand-mark{width:36px;height:36px;flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em;line-height:1.25;}
.brand-text small{font-size:11px;font-weight:400;color:var(--text-mute);letter-spacing:.04em;margin-top:2px;}
.nav-list{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;display:block;padding:10px 13px;border-radius:8px;
  font-size:15px;color:var(--text-dim);text-decoration:none;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--text);background:var(--surface);text-decoration:none;}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.burger{
  display:none;position:relative;width:44px;height:44px;flex-shrink:0;
  background:transparent;border:1px solid var(--line-strong);border-radius:var(--radius-btn);cursor:pointer;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.burger:hover{border-color:var(--brand);background:var(--brand-soft);}
.burger span,.burger::before,.burger::after{
  content:"";position:absolute;left:13px;right:13px;height:2px;border-radius:2px;background:var(--text);
}
.burger span{top:50%;transform:translateY(-50%);}
.burger::before{top:15px;}
.burger::after{top:27px;}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;top:0;right:0;z-index:95;width:280px;max-width:86vw;height:100%;
  background:var(--surface);border-left:1px solid var(--line);
  display:flex;flex-direction:column;padding:20px;gap:18px;
  transform:translateX(102%);transition:transform .26s var(--ease);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);}
.drawer-title{font-size:14px;color:var(--text-mute);letter-spacing:.06em;}
.drawer nav{display:flex;flex-direction:column;gap:4px;}
.drawer nav a{
  display:block;padding:12px 14px;border-radius:10px;font-size:15.5px;color:var(--text-dim);
  border:1px solid transparent;text-decoration:none;min-height:44px;
}
.drawer nav a:hover{background:var(--surface-2);color:var(--text);text-decoration:none;}
.drawer nav a.is-active{color:var(--text);font-weight:600;border-color:var(--line-strong);background:var(--surface-2);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.drawer-note{font-size:12px;color:var(--text-mute);line-height:1.7;}
.drawer-mask{
  position:fixed;inset:0;z-index:90;background:rgba(6,5,16,.72);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 分类首屏 ============ */
.cat-hero{
  position:relative;padding:76px 0 68px;border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg, rgba(10,9,24,.74) 0%, rgba(10,9,24,.92) 62%, var(--bg-deep) 100%),
    url(/assets/images/backpic/back-1.webp);
  background-size:cover,cover;
  background-position:center,center;
  background-repeat:no-repeat,no-repeat;
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.badge{
  display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.02em;color:var(--text-dim);
  background:var(--surface-2);border:1px solid var(--line);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);flex-shrink:0;}
.badge.is-new .dot{background:var(--nebula);}
.badge.is-warn .dot{background:var(--warn);}
.hero-title{font-size:38px;line-height:1.28;font-weight:700;letter-spacing:.01em;}
.hero-title em{font-style:normal;color:var(--accent);}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--text-dim);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line);}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);}
.trust-item svg{width:18px;height:18px;flex-shrink:0;stroke:var(--brand);fill:none;stroke-width:1.6;}
.hero-visual{position:relative;padding-bottom:16px;padding-left:16px;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;
  border:1px solid rgba(124,92,255,.32);
  box-shadow:0 0 0 1px rgba(124,92,255,.10), 0 30px 60px -34px rgba(0,0,0,.95);
}
.float-card{
  position:absolute;left:-6px;bottom:0;width:190px;padding:14px 16px;
  background:var(--surface-2);border:1px solid var(--line-strong);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
}
.float-card .num{font-family:var(--mono);font-size:36px;font-weight:700;line-height:1;color:var(--accent);font-variant-numeric:tabular-nums;}
.float-card .lbl{margin-top:6px;font-size:12px;color:var(--text-mute);letter-spacing:.02em;}

/* ============ 通用板块 ============ */
.section{padding:84px 0;}
.section + .section{border-top:1px solid var(--line);}
.sec-head{max-width:820px;margin-bottom:34px;}
.sec-title{position:relative;padding-left:15px;font-size:27px;font-weight:700;line-height:1.4;letter-spacing:.01em;}
.sec-title::before{content:"";position:absolute;left:0;top:.3em;width:3px;height:18px;border-radius:2px;background:var(--brand);}
.sec-lead{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--text-dim);}

/* ============ 图文交替 ============ */
.device-row{
  display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;
  padding:34px 0;
}
.device-row + .device-row{border-top:1px solid var(--line);}
.device-row.reverse .device-media{order:2;}
.device-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.device-body h3{font-size:20px;font-weight:600;line-height:1.5;margin-bottom:14px;}
.device-body h3 .idx{
  font-family:var(--mono);font-size:13px;color:var(--brand);letter-spacing:.08em;
  display:inline-block;margin-right:9px;padding:2px 8px;border:1px solid rgba(124,92,255,.4);border-radius:6px;
  vertical-align:middle;
}
.device-body p{font-size:15.5px;line-height:1.85;color:var(--text-dim);}
.device-body p + p{margin-top:12px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 13px;border-radius:var(--radius-pill);
  font-size:12.5px;color:var(--text-dim);background:var(--surface);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.tag:hover{color:var(--text);border-color:var(--brand);background:var(--brand-soft);}

/* ============ 平台标签墙 ============ */
.tag-wall{display:flex;flex-wrap:wrap;gap:12px;}
.tag-wall .tag{padding:10px 18px;font-size:13.5px;background:var(--surface-2);}
.tag-wall .tag .mono{font-family:var(--mono);color:var(--accent);margin-right:8px;font-size:12.5px;}

/* ============ 步骤编号卡 ============ */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.step-card{
  padding:26px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.step-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:var(--shadow-2);}
.step-num{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--brand);line-height:1;letter-spacing:.04em;}
.step-card h3{font-size:17px;font-weight:600;margin:16px 0 10px;}
.step-card p{font-size:14.5px;line-height:1.8;color:var(--text-dim);}

/* ============ FAQ ============ */
.faq-list{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:18px;
  padding:20px 4px;background:none;border:0;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--text);text-align:left;line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-link);}
.faq-q .plus{
  position:relative;width:20px;height:20px;flex-shrink:0;
  transition:transform .3s var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:14px;height:2px;}
.faq-q .plus::after{width:2px;height:14px;}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-item.is-open .faq-a{max-height:520px;}
.faq-a p{padding:0 44px 22px 4px;font-size:15px;line-height:1.85;color:var(--text-dim);}
.faq-item.is-open{background:var(--surface-2);}

/* ============ CTA ============ */
.cta-band{
  padding:60px 0;border-top:1px solid var(--line);
  background-image:
    linear-gradient(180deg, rgba(23,20,48,.94), rgba(16,14,34,.96)),
    url(/assets/images/backpic/back-3.png);
  background-size:cover,cover;
  background-position:center,center;
}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  padding:34px 32px;border:1px solid rgba(124,92,255,.28);border-radius:var(--radius-lg);
  background:var(--brand-soft);box-shadow:var(--shadow-1);
}
.cta-text h2{font-size:24px;font-weight:700;line-height:1.45;}
.cta-text p{margin-top:10px;font-size:15px;color:var(--text-dim);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);background:var(--bg-deep);
  padding:64px 0 28px;font-size:14px;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-brand .brand-mark{width:32px;height:32px;}
.foot-brand .brand-text{font-size:15.5px;font-weight:700;color:var(--text);}
.foot-desc{font-size:13.5px;line-height:1.85;color:var(--text-mute);max-width:340px;}
.foot-col h4{font-size:14px;font-weight:600;color:var(--brand);margin-bottom:16px;letter-spacing:.02em;}
.foot-col ul{display:flex;flex-direction:column;gap:10px;}
.foot-col li a{font-size:14px;color:var(--text-dim);text-decoration:none;}
.foot-col li a:hover{color:var(--text);}
.foot-col li p{font-size:13.5px;color:var(--text-dim);line-height:1.7;}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  text-align:center;font-size:12px;line-height:1.9;color:var(--text-mute);
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .hero-title{font-size:34px;}
  .step-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-visual{padding-left:0;padding-bottom:14px;max-width:640px;}
  .device-row{grid-template-columns:1fr;gap:22px;}
  .device-row.reverse .device-media{order:0;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:72px 0;}
  .cat-hero{padding:60px 0 54px;}
}
@media (max-width:900px){
  .nav-list{display:none;}
  .nav-actions .btn-outline{display:none;}
  .burger{display:block;}
  .nav{gap:14px;}
  .brand-text small{display:none;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .hero-title{font-size:30px;}
  .hero-sub{font-size:16px;}
  .sec-title{font-size:23px;}
  .section{padding:58px 0;}
  .step-grid{grid-template-columns:1fr;}
  .cta-inner{padding:26px 22px;}
  .cta-text h2{font-size:21px;}
  .faq-a p{padding-right:10px;}
  .float-card{width:160px;padding:12px 14px;}
  .float-card .num{font-size:30px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:560px){
  .container{padding:0 16px;}
  .hero-title{font-size:26px;line-height:1.32;}
  .hero-actions .btn{width:100%;}
  .trust-row{gap:14px;}
  .trust-item{font-size:12.5px;}
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .tag-wall .tag{padding:9px 14px;font-size:12.5px;}
  .section{padding:48px 0;}
  .brand-text{font-size:14.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg-deep:#0A0918;
  --bg-base:#100E22;
  --surface:#171430;
  --surface-2:#1E1A3C;
  --surface-3:#251F49;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#7C5CFF;
  --brand-600:#6746F0;
  --brand-soft:rgba(124,92,255,.14);
  --accent:#FFBF5C;
  --nebula:#FF7AB8;
  --text:#EDEAF7;
  --text-dim:#A9A3C7;
  --text-mute:#756F96;
  --link:#9B85FF;
  --ok:#3DD68C;
  --warn:#FFB020;
  --danger:#FF6B6B;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-panel:18px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset, 0 16px 36px -26px rgba(0,0,0,.9);
  --shadow-2:0 22px 48px -28px rgba(0,0,0,.95), 0 0 0 1px rgba(124,92,255,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-deep);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle at 16% 10%, rgba(124,92,255,.12), transparent 46%),
    radial-gradient(circle at 84% 4%, rgba(255,122,184,.07), transparent 42%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,8px 8px,8px 8px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--link);text-decoration:none;text-underline-offset:3px;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:#B7A6FF;text-decoration:underline}
button{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:.01em}
p{margin:0 0 1.2em}
ul{margin:0;padding:0;list-style:none}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:var(--r-btn);z-index:200}
.skip-link:focus{left:12px;top:12px}

/* 公告条 */
.notice-bar{background:var(--surface-2);border-bottom:1px solid var(--line);font-size:13px;color:var(--text-dim);min-height:36px;position:relative;z-index:20}
.notice-inner{display:flex;align-items:center;gap:14px;min-height:36px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:11px;line-height:1.6;border:1px solid var(--line-strong);color:var(--text-dim);white-space:nowrap}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--text-mute);display:inline-block}
.badge-ok{color:#8FF0C0;border-color:rgba(61,214,140,.32);background:rgba(61,214,140,.08)}
.badge-ok i{background:var(--ok)}
.badge-warn{color:#FFD79A;border-color:rgba(255,176,32,.32);background:rgba(255,176,32,.08)}
.badge-warn i{background:var(--warn)}
.badge-new{color:#FFC4DE;border-color:rgba(255,122,184,.32);background:rgba(255,122,184,.08)}
.badge-new i{background:var(--nebula)}
.notice-text{flex:1;min-width:180px}
.notice-timer{font-size:12px;color:var(--text-mute)}
.notice-timer b{color:var(--accent);font-weight:700;margin-left:4px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(10,9,24,.96);border-bottom:1px solid transparent;transition:border-color .24s var(--ease),background .24s var(--ease)}
.site-header.is-scrolled{border-bottom-color:var(--line-strong)}
.nav{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand-mark{width:34px;height:34px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;color:var(--text);font-size:16px;font-weight:700;line-height:1.25;letter-spacing:.01em}
.brand-text small{font-size:11px;font-weight:400;color:var(--text-mute);letter-spacing:.04em;margin-top:2px}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1}
.nav-link{display:inline-flex;align-items:center;height:44px;padding:0 12px;font-size:15px;color:var(--text-dim);text-decoration:none;border-bottom:2px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.nav-link:hover{color:var(--text);text-decoration:none}
.nav-link.is-active{color:var(--text);border-bottom-color:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.burger{display:none;width:44px;height:44px;background:transparent;border:1px solid var(--line-strong);border-radius:var(--r-btn);cursor:pointer;position:relative}
.burger span,.burger span::before,.burger span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;transform:translateX(-50%);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.burger span{top:50%;margin-top:-1px}
.burger span::before{content:"";top:-6px;left:0;transform:none}
.burger span::after{content:"";top:6px;left:0;transform:none}
.nav-mask{display:none}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);white-space:nowrap}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.18)}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--text)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn:focus-visible,.nav-link:focus-visible,.faq-q:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* 通用板块 */
main{position:relative;z-index:1}
.sec{padding:88px 0}
.sec-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:28px}
.sec-head h2{font-size:28px;line-height:1.35;position:relative;padding-left:14px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.28em;width:3px;height:18px;background:var(--brand);border-radius:2px}
.sec-head p{margin:14px 0 0;color:var(--text-dim);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--text-mute);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand)}

/* 面包屑 */
.crumbs{font-size:14px;color:var(--text-mute);padding-top:24px}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumbs li::after{content:"/";margin-left:8px;color:var(--text-mute);opacity:.6}
.crumbs li:last-child::after{content:""}
.crumbs a{color:var(--text-dim)}
.crumbs .current{color:var(--text-mute)}

/* Hero */
.page-hero{padding:36px 0 88px}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:44px;align-items:center}
.page-hero h1{font-size:38px;line-height:1.25;letter-spacing:.01em;margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--text-dim);max-width:560px;margin-bottom:20px}
.status-line{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;font-size:13px;color:var(--text-dim)}
.trust-row li{display:flex;align-items:center;gap:8px}
.trust-row svg{width:16px;height:16px;flex-shrink:0}
.hero-visual{position:relative}
.hero-figure{position:relative;border-radius:16px;overflow:hidden;border:1px solid rgba(124,92,255,.34);box-shadow:0 30px 60px -40px rgba(124,92,255,.75);aspect-ratio:16/10;background:var(--surface-2)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,9,24,.12),rgba(10,9,24,.62))}
.float-card{position:absolute;right:-16px;bottom:-16px;background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--r-card);padding:16px 20px;box-shadow:var(--shadow-2);min-width:172px}
.float-card .num{font-family:var(--font-mono);font-size:34px;font-weight:700;line-height:1;color:var(--accent);font-variant-numeric:tabular-nums}
.float-card .num span{font-size:15px;color:var(--text-dim);margin-left:4px;font-weight:600}
.float-card .lbl{font-size:12px;color:var(--text-dim);margin-top:8px}

/* 要点网格 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.point-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1);transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);position:relative}
.point-card::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,var(--brand),rgba(124,92,255,0));border-radius:var(--r-card) var(--r-card) 0 0}
.point-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.5);box-shadow:var(--shadow-2)}
.point-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);border:1px solid rgba(124,92,255,.28);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.point-icon svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.point-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.point-card p{font-size:14.5px;color:var(--text-dim);margin:0;line-height:1.8}

/* 流程时间轴 */
.steps{display:grid;gap:20px;position:relative}
.step{display:grid;grid-template-columns:76px 1fr auto;gap:22px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1);transition:border-color .22s var(--ease),background .22s var(--ease)}
.step:hover{border-color:rgba(124,92,255,.45);background:var(--surface-2)}
.step-num{font-family:var(--font-mono);font-size:30px;font-weight:700;color:var(--brand);line-height:1;font-variant-numeric:tabular-nums}
.step-body h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step-body p{margin:0;font-size:14.5px;color:var(--text-dim);line-height:1.8}
.step-arrow{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-mute);white-space:nowrap}

/* 提示条 */
.alert-bar{display:flex;flex-wrap:wrap;align-items:center;gap:20px;justify-content:space-between;background:var(--surface-2);border-left:3px solid var(--accent);border-radius:0 var(--r-card) var(--r-card) 0;padding:22px 26px}
.alert-bar .alert-text{flex:1;min-width:240px}
.alert-bar strong{display:block;font-size:16px;font-weight:600;margin-bottom:6px}
.alert-bar p{margin:0;font-size:14px;color:var(--text-dim)}

/* 对照 */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{border-radius:var(--r-card);padding:26px;border:1px solid var(--line);background:var(--surface)}
.compare-col.is-best{background:var(--brand-soft);border-color:rgba(124,92,255,.5)}
.compare-col h3{font-size:18px;margin-bottom:18px;font-weight:600}
.compare-col.is-plain h3{color:var(--text-mute)}
.compare-col.is-best h3{color:var(--text)}
.compare-list li{display:flex;gap:12px;align-items:flex-start;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--text-dim);line-height:1.75}
.compare-list li:last-child{border-bottom:none}
.compare-list svg{width:17px;height:17px;flex-shrink:0;margin-top:5px}
.mark-ok{stroke:var(--ok)}
.mark-no{stroke:var(--text-mute)}
.hl{color:var(--accent);font-family:var(--font-mono);font-weight:700;font-variant-numeric:tabular-nums}
.compare-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap}

/* FAQ */
.faq-wrap{max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;background:transparent;border:none;padding:20px 6px;font-size:17px;font-weight:600;text-align:left;cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease);min-height:44px}
.faq-q:hover{color:#C9BBFF}
.faq-q .plus{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .24s var(--ease)}
.faq-q .plus::before{left:0;top:8px;width:18px;height:2px}
.faq-q .plus::after{left:8px;top:0;width:2px;height:18px}
.faq-q[aria-expanded="true"] .plus::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);background:transparent}
.faq-a.is-open{background:var(--surface-2);border-radius:0 0 var(--r-card) var(--r-card)}
.faq-a-inner{padding:4px 6px 20px;font-size:15px;color:var(--text-dim);line-height:1.8;max-width:780px}

/* CTA */
.cta-band{position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-base)}
.cta-band .cta-bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;opacity:.22}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;padding:64px 0}
.cta-inner h2{font-size:26px;margin-bottom:12px}
.cta-inner p{margin:0;color:var(--text-dim);font-size:15.5px;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* 页脚 */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 0;position:relative;z-index:1}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-text{font-size:15px}
.foot-desc{font-size:14px;color:var(--text-dim);line-height:1.8;margin:0}
.foot-col h4{font-size:14px;color:var(--brand);margin-bottom:16px;font-weight:600;letter-spacing:.02em}
.foot-col ul li{margin-bottom:10px}
.foot-col a{font-size:14px;color:var(--text-dim)}
.foot-col a:hover{color:var(--text)}
.foot-col p{font-size:14px;color:var(--text-dim);margin:0}
.foot-bottom{border-top:1px solid var(--line);padding:22px 0;text-align:center;font-size:12px;color:var(--text-mute);line-height:1.9}

/* 响应式 */
@media (max-width:1023px){
  .sec{padding:64px 0}
  .page-hero{padding:28px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero h1{font-size:32px}
  .float-card{right:12px;bottom:-12px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:899px){
  .burger{display:block}
  .nav-list{
    position:fixed;top:0;right:0;height:100vh;width:280px;max-width:82vw;
    background:var(--surface);border-left:1px solid var(--line-strong);
    flex-direction:column;align-items:stretch;gap:2px;
    padding:86px 20px 28px;margin:0;
    transform:translateX(102%);transition:transform .26s var(--ease);
    z-index:90;overflow-y:auto;
  }
  body.nav-open .nav-list{transform:translateX(0)}
  .nav-list li{width:100%}
  .nav-link{height:48px;width:100%;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;padding:0 6px}
  .nav-list .drawer-cta{margin-top:20px}
  .nav-list .drawer-cta .btn{width:100%;margin-bottom:10px}
  .nav-mask{display:block;position:fixed;inset:0;background:rgba(6,5,16,.72);opacity:0;pointer-events:none;transition:opacity .26s var(--ease);z-index:85}
  body.nav-open .nav-mask{opacity:1;pointer-events:auto}
  body.nav-open{overflow:hidden}
  .nav-actions .btn-outline{display:none}
  .nav-actions .btn-primary{display:none}
  .step{grid-template-columns:56px 1fr;gap:16px}
  .step-arrow{display:none}
  .compare{grid-template-columns:1fr}
}
@media (max-width:639px){
  .container{padding:0 20px}
  .sec{padding:48px 0}
  .page-hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .sec-head h2{font-size:23px}
  .grid-3{grid-template-columns:1fr}
  .notice-timer{display:none}
  .notice-inner{gap:10px;padding-top:6px;padding-bottom:6px}
  .notice-text{font-size:12px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .cta-inner{padding:48px 0}
  .cta-inner h2{font-size:22px}
  .cta-actions .btn{width:100%}
  .compare-head{margin-bottom:18px}
  .step{grid-template-columns:1fr;gap:10px}
  .step-num{font-size:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg-deep:#0A0918;
  --bg-base:#100E22;
  --surface:#171430;
  --surface-2:#1E1A3C;
  --surface-3:#251F49;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#7C5CFF;
  --brand-600:#6746F0;
  --brand-soft:rgba(124,92,255,.14);
  --accent:#FFBF5C;
  --nebula:#FF7AB8;
  --text:#EDEAF7;
  --text-dim:#A9A3C7;
  --text-mute:#756F96;
  --ok:#3DD68C;
  --warn:#FFB020;
  --danger:#FF6B6B;
  --link:#9B85FF;
  --radius-s:10px;
  --radius:14px;
  --radius-l:18px;
  --shadow-1:0 1px 0 rgba(255,255,255,.04) inset,0 16px 36px -26px rgba(0,0,0,.9);
  --shadow-2:0 22px 48px -28px rgba(0,0,0,.95),0 0 0 1px rgba(124,92,255,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:220ms;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(760px 420px at 12% -6%,rgba(124,92,255,.16),transparent 62%),
    radial-gradient(620px 380px at 88% 4%,rgba(255,122,184,.07),transparent 60%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.02) 0 1px,transparent 1px 8px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.02) 0 1px,transparent 1px 8px);
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--link);text-decoration:none;text-underline-offset:3px;transition:color var(--dur) var(--ease);}
a:hover{color:var(--text);text-decoration:underline;}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:700;letter-spacing:.01em;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;border-radius:var(--radius-s);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  border:1px solid transparent;transition:all var(--dur) var(--ease);
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.18) inset;}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text);}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--text);}
.btn-ghost{background:transparent;color:var(--brand);padding:8px 0;min-height:auto;}
.btn-ghost:hover{color:var(--text);text-decoration:underline;text-decoration-thickness:2px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
  border:1px solid var(--line-strong);background:var(--surface-2);color:var(--text-dim);
  white-space:nowrap;
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--text-mute);}
.badge-ok{color:var(--ok);border-color:rgba(61,214,140,.32);background:rgba(61,214,140,.1);}
.badge-ok::before{background:var(--ok);}
.badge-warn{color:var(--warn);border-color:rgba(255,176,32,.32);background:rgba(255,176,32,.1);}
.badge-warn::before{background:var(--warn);}
.badge-new{color:var(--nebula);border-color:rgba(255,122,184,.32);background:rgba(255,122,184,.1);}
.badge-new::before{background:var(--nebula);}
.badge-plain::before{display:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(16,14,34,.96);
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;flex-shrink:0;}
.brand:hover{text-decoration:none;color:var(--text);}
.brand-mark{width:36px;height:36px;flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.2;letter-spacing:.01em;}
.brand-text small{font-size:11px;font-weight:500;color:var(--text-mute);letter-spacing:.06em;}
.nav-list{display:flex;align-items:center;gap:22px;}
.nav-link{
  display:inline-block;padding:12px 2px;font-size:15px;color:var(--text-dim);
  position:relative;text-decoration:none;transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text);text-decoration:none;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.burger{
  display:none;width:44px;height:44px;border-radius:var(--radius-s);
  background:var(--surface-2);border:1px solid var(--line-strong);cursor:pointer;
  align-items:center;justify-content:center;
}
.burger span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--dur) var(--ease);}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(10,9,24,.68);z-index:70;
  opacity:0;pointer-events:none;transition:opacity var(--dur) var(--ease);
}
.nav-backdrop.is-open{opacity:1;pointer-events:auto;}

/* ---------- 首屏 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.2;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,9,24,.5) 0%,rgba(16,14,34,.94) 62%,var(--bg-base) 100%);
}
.page-hero .container{position:relative;z-index:2;padding-top:68px;padding-bottom:64px;}
.hero-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:48px;align-items:center;}
.hero-badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.hero h1{font-size:38px;line-height:1.26;margin-bottom:18px;}
.hero-sub{font-size:17px;color:var(--text-dim);max-width:620px;margin-bottom:26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.trust-row{display:flex;flex-wrap:wrap;gap:24px;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);}
.trust-item svg{width:16px;height:16px;flex-shrink:0;color:var(--brand);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:16px;border:1px solid rgba(124,92,255,.4);
  box-shadow:0 0 0 1px rgba(124,92,255,.12),0 28px 60px -34px rgba(0,0,0,1);
  background:var(--surface-2);
}
.float-card{
  position:absolute;right:-16px;bottom:-16px;
  min-width:180px;padding:16px 18px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line-strong);
  box-shadow:var(--shadow-1);
}
.float-card .num{display:block;font-size:34px;font-weight:700;color:var(--accent);line-height:1;}
.float-card span.flabel{display:block;margin-top:6px;font-size:12px;color:var(--text-dim);}
.float-card .fline{display:block;height:2px;margin-top:10px;border-radius:2px;background:linear-gradient(90deg,var(--brand),transparent);}

/* ---------- 板块 ---------- */
.section{padding:92px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head p{font-size:15px;color:var(--text-dim);}
.section-title{position:relative;padding-left:15px;font-size:28px;margin-bottom:14px;}
.section-title::before{
  content:"";position:absolute;left:0;top:.24em;width:3px;height:1em;
  border-radius:2px;background:linear-gradient(180deg,var(--brand),rgba(124,92,255,.2));
}
.section-title-sm{font-size:20px;margin-bottom:12px;}
.lead{font-size:17px;color:var(--text-dim);}

/* ---------- 状态看板 ---------- */
.status-board{
  border:1px solid var(--line);border-radius:var(--radius-l);
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  overflow:hidden;box-shadow:var(--shadow-1);
}
.status-head{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 22px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02);
  font-size:13px;color:var(--text-mute);
}
.status-row{
  display:grid;grid-template-columns:minmax(0,1.4fr) auto minmax(0,1fr) auto;
  gap:16px;align-items:center;padding:16px 22px;border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease);
}
.status-row:last-child{border-bottom:none;}
.status-row:hover{background:var(--surface-3);}
.status-name{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;min-width:0;}
.status-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;background:var(--text-mute);}
.status-dot.ok{background:var(--ok);box-shadow:0 0 0 3px rgba(61,214,140,.14);}
.status-dot.warn{background:var(--warn);box-shadow:0 0 0 3px rgba(255,176,32,.14);}
.status-dot.new{background:var(--nebula);box-shadow:0 0 0 3px rgba(255,122,184,.14);}
.status-scope{font-size:13px;color:var(--text-dim);}
.status-time{font-size:12px;color:var(--text-mute);font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap;}
.status-note{margin-top:14px;font-size:13px;color:var(--text-mute);}

/* ---------- 对比表 ---------- */
.spec{border:1px solid var(--line);border-radius:var(--radius-l);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-1);}
.spec-head{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr) minmax(0,1.25fr);
  gap:16px;padding:14px 22px;background:rgba(124,92,255,.14);
  border-bottom:1px solid var(--line);font-size:13px;font-weight:600;color:var(--text);
}
.spec-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr) minmax(0,1.25fr);
  gap:16px;padding:18px 22px;border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease);
}
.spec-row:last-child{border-bottom:none;}
.spec-row:nth-child(even){background:rgba(255,255,255,.015);}
.spec-row:hover{background:var(--surface-3);}
.spec-cell{font-size:14px;color:var(--text-dim);line-height:1.7;}
.spec-key{font-size:15px;font-weight:600;color:var(--text);}
.spec-better{color:var(--text);}
.spec-better::after{
  content:"";display:block;height:2px;width:28px;margin-top:8px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),transparent);
}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;justify-content:space-between;
  padding:20px 22px;border-radius:var(--radius);background:var(--surface-2);
  border:1px solid var(--line);border-left:3px solid var(--warn);
}
.notice-text{display:flex;align-items:flex-start;gap:12px;max-width:760px;}
.notice-text svg{width:20px;height:20px;flex-shrink:0;margin-top:3px;color:var(--warn);}
.notice-text p{font-size:14px;color:var(--text-dim);margin:0;}
.notice-text strong{color:var(--text);}

/* ---------- FAQ ---------- */
.faq{border:1px solid var(--line);border-radius:var(--radius-l);background:var(--surface);overflow:hidden;box-shadow:var(--shadow-1);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:transparent;border:none;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.5;
  transition:background var(--dur) var(--ease);
}
.faq-q:hover{background:var(--surface-2);}
.faq-item.is-open .faq-q{background:var(--surface-2);}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;transition:transform var(--dur) var(--ease);}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-icon::before{top:7px;left:0;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);}
.faq-a-inner{padding:4px 22px 20px;}
.faq-a-inner p{font-size:15px;color:var(--text-dim);line-height:1.85;}

/* ---------- CTA + 表单 ---------- */
.cta-wrap{
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:28px;
  align-items:start;
}
.cta-main,.cta-side{
  border:1px solid var(--line);border-radius:var(--radius-l);padding:28px;
  background:var(--surface);box-shadow:var(--shadow-1);
}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:8px;font-weight:600;}
.form-field input,.form-field select,.form-field textarea{
  width:100%;min-height:44px;padding:11px 14px;border-radius:var(--radius-s);
  background:var(--surface-2);border:1px solid var(--line-strong);
  font-size:15px;color:var(--text);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.form-field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-mute);}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(124,92,255,.18);
}
.form-field.has-error input,.form-field.has-error textarea{border-color:var(--danger);}
.form-error{display:none;margin-top:7px;font-size:12px;color:var(--danger);}
.form-field.has-error .form-error{display:block;}
.form-privacy{font-size:12px;color:var(--text-mute);margin-top:12px;line-height:1.7;}
.form-submit{width:100%;margin-top:4px;}
.form-success{
  display:flex;gap:14px;align-items:flex-start;padding:22px;border-radius:var(--radius);
  background:rgba(61,214,140,.1);border:1px solid rgba(61,214,140,.3);
}
.form-success svg{width:24px;height:24px;color:var(--ok);flex-shrink:0;}
.form-success h3{font-size:17px;margin-bottom:6px;}
.form-success p{font-size:14px;color:var(--text-dim);margin:0;}
.cta-side h3{font-size:20px;margin-bottom:14px;}
.point-list li{
  display:flex;gap:10px;font-size:14px;color:var(--text-dim);
  padding:11px 0;border-bottom:1px solid var(--line);line-height:1.7;
}
.point-list li:last-child{border-bottom:none;}
.point-list li svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;color:var(--brand);}
.side-meta{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-mute);}
.side-meta .num{color:var(--accent);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 26px;margin-top:8px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-brand .brand-mark{width:32px;height:32px;}
.foot-brand .brand-text{font-size:16px;font-weight:700;}
.foot-desc{font-size:14px;color:var(--text-dim);line-height:1.8;max-width:320px;}
.foot-col h4{font-size:14px;color:var(--brand);margin-bottom:14px;letter-spacing:.02em;}
.foot-col ul li{margin-bottom:10px;}
.foot-col ul li a,.foot-col ul li p{font-size:14px;color:var(--text-dim);margin:0;transition:color var(--dur) var(--ease);}
.foot-col ul li a:hover{color:var(--text);text-decoration:none;}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  text-align:center;font-size:12px;color:var(--text-mute);line-height:1.9;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .hero h1{font-size:32px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{max-width:640px;}
  .float-card{right:12px;bottom:-14px;}
  .cta-wrap{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .burger{display:inline-flex;}
  .nav-list{
    position:fixed;top:0;right:0;width:280px;height:100vh;z-index:80;
    flex-direction:column;align-items:flex-start;gap:6px;
    padding:84px 24px 28px;background:var(--surface);
    border-left:1px solid var(--line-strong);
    transform:translateX(100%);transition:transform 260ms var(--ease);
    overflow-y:auto;
  }
  .nav-list.is-open{transform:translateX(0);}
  .nav-list .nav-link{width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--line);}
  .nav-list .nav-link::after{display:none;}
  .nav-list .nav-link.is-active{color:var(--brand);}
}
@media (max-width:820px){
  .status-row{grid-template-columns:minmax(0,1fr) auto;row-gap:8px;}
  .status-scope{grid-column:1 / -1;order:3;}
  .status-time{order:2;}
  .spec-head{display:none;}
  .spec-row{grid-template-columns:1fr;gap:12px;padding:20px 18px;}
  .spec-cell::before{
    content:attr(data-label);display:block;margin-bottom:5px;
    font-size:12px;color:var(--text-mute);font-weight:600;letter-spacing:.04em;
  }
}
@media (max-width:640px){
  .section{padding:52px 0;}
  .page-hero .container{padding-top:48px;padding-bottom:48px;}
  .hero h1{font-size:26px;}
  .hero-sub{font-size:16px;}
  .section-title{font-size:23px;}
  .cta-main,.cta-side{padding:20px;}
  .status-row{padding:14px 16px;}
  .faq-q{padding:16px;font-size:15.5px;}
  .faq-a-inner{padding:2px 16px 18px;}
  .btn{width:100%;}
  .hero-cta .btn{width:auto;flex:1 1 auto;}
  .nav-actions .btn-outline{display:none;}
  .nav-actions .btn{width:auto;padding:10px 14px;font-size:14px;}
  .float-card{min-width:150px;padding:12px 14px;right:8px;}
  .float-card .num{font-size:26px;}
}
@media (max-width:480px){
  .foot-grid{grid-template-columns:1fr;}
  .trust-row{gap:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important;}
  html{scroll-behavior:auto;}
}