/* roulang page: index */
:root{
  --c-bg:#060B14;
  --c-bg-2:#0B1220;
  --c-surface:rgba(255,255,255,.05);
  --c-surface-2:rgba(255,255,255,.08);
  --c-line:rgba(148,197,255,.14);
  --c-primary:#22D3EE;
  --c-primary-deep:#0E9AA7;
  --c-accent:#FF7A1A;
  --c-ink:#E6EEF8;
  --c-ink-2:#9FB0C6;
  --c-ink-3:#6B7C93;
  --c-danger:#FF6B6B;
  --radius-sm:12px;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 16px 40px rgba(2,8,20,.55);
  --shadow-hover:0 8px 40px rgba(34,211,238,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:80px;
  background-color:var(--c-bg);
  background-image:
    radial-gradient(1200px 620px at 82% -12%, rgba(34,211,238,.10), transparent 62%),
    radial-gradient(900px 520px at -12% 34%, rgba(255,122,26,.06), transparent 60%);
  background-repeat:no-repeat;
  color:var(--c-ink);
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.tabular{font-variant-numeric:tabular-nums}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  background:rgba(6,11,20,.9);
  box-shadow:0 12px 30px rgba(2,8,20,.55);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-badge{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-deep));
  color:#04222A;font-weight:800;font-size:18px;
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 26px -10px rgba(34,211,238,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.brand-text em{font-size:11px;font-style:normal;color:var(--c-ink-3);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 2px;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;border-radius:2px;
}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-ink);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink);
  cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:rgba(34,211,238,.45);color:var(--c-primary)}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:80;
  background:linear-gradient(180deg,#0A1220,#060B14);
  border-left:1px solid var(--c-line);
  transform:translateX(105%);transition:transform .3s ease;
  padding:22px 22px 26px;display:flex;flex-direction:column;gap:8px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);background:transparent;color:var(--c-ink);cursor:pointer}
.drawer-close:hover{color:var(--c-primary);border-color:rgba(34,211,238,.45)}
.drawer a.drawer-link{
  display:block;padding:14px 14px;border-radius:12px;color:var(--c-ink-2);
  border:1px solid transparent;font-size:15px;
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{
  color:var(--c-ink);background:var(--c-surface);border-color:var(--c-line);
}
.drawer-foot{margin-top:auto}
.mask{position:fixed;inset:0;background:rgba(3,6,12,.6);backdrop-filter:blur(2px);z-index:70;opacity:0;pointer-events:none;transition:opacity .3s ease}
.mask.open{opacity:1;pointer-events:auto}

/* 按钮 */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,filter .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(135deg,#3DE7F7,var(--c-primary) 45%,var(--c-primary-deep));
  color:#03202A;
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 30px -8px rgba(34,211,238,.55);
}
.btn-glow:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-glow:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;border-color:rgba(34,211,238,.45);color:var(--c-primary);
}
.btn-ghost:hover{background:rgba(34,211,238,.09);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-glow:focus-visible,.btn-ghost:focus-visible,.nav-toggle:focus-visible,.drawer-close:focus-visible,
a:focus-visible,summary:focus-visible,.input:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* Hero */
.hero{position:relative;overflow:hidden;padding:64px 0 56px;isolation:isolate}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.34;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(180deg,rgba(6,11,20,.72) 0%,rgba(6,11,20,.9) 62%,var(--c-bg) 100%),
    repeating-linear-gradient(0deg,rgba(34,211,238,.07) 0 1px,transparent 1px 56px),
    repeating-linear-gradient(90deg,rgba(34,211,238,.07) 0 1px,transparent 1px 56px);
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:44px;align-items:center}
.hero-copy{max-width:640px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--c-primary);
  background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.3);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero-eyebrow .dot-live{width:7px;height:7px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(255,122,26,.18)}
.hero-title{
  font-size:clamp(30px,5vw,56px);line-height:1.16;font-weight:800;letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero-title span{
  background:linear-gradient(100deg,var(--c-primary),#8EF3FF 55%,var(--c-accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--c-ink-2);margin-bottom:26px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;padding-top:18px;border-top:1px solid var(--c-line)}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2)}
.trust-item i{color:var(--c-primary)}
.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid rgba(34,211,238,.35);
  box-shadow:0 0 0 1px rgba(34,211,238,.12),0 0 60px -14px rgba(34,211,238,.5),var(--shadow);
  aspect-ratio:16/10;background:var(--c-bg-2);
}
.hero-frame img{width:100%;height:100%;object-fit:cover}
.hero-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,.05) 40%,rgba(6,11,20,.72) 100%);
}
.hero-frame-cap{
  position:absolute;left:18px;right:18px;bottom:16px;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-ink-2);
}
.hero-frame-cap strong{color:var(--c-ink);font-size:14px}

/* 数据条 */
.stats-bar{margin-top:-28px;position:relative;z-index:5}
.stats-inner{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--c-line);border:1px solid var(--c-line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow);
}
.stat{background:linear-gradient(180deg,rgba(11,18,32,.96),rgba(6,11,20,.96));padding:22px 24px}
.stat-num{font-size:clamp(28px,3.4vw,40px);font-weight:800;color:var(--c-primary);line-height:1.1;letter-spacing:-.03em}
.stat-num small{font-size:15px;color:var(--c-ink-2);font-weight:600;margin-left:2px}
.stat-label{font-size:13px;color:var(--c-ink-3);margin-top:6px}

/* 板块 */
.section{padding:72px 0}
.section-alt{background:linear-gradient(180deg,rgba(11,18,32,.6),rgba(6,11,20,0) 80%)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
.section-title{font-size:clamp(22px,3vw,36px);font-weight:800;letter-spacing:-.02em;line-height:1.25}
.section-sub{font-size:15px;color:var(--c-ink-2);margin-top:10px;max-width:680px}
.link-more{font-size:14px;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-more:hover{gap:10px;color:#8EF3FF}

/* 卡片 */
.glass-card{
  background:var(--c-surface);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.glass-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.35);box-shadow:var(--shadow-hover)}

/* 卖点三连 */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start}
.feature-card{position:relative;padding:26px;overflow:hidden;display:flex;flex-direction:column}
.feature-card--a{grid-column:span 5;min-height:288px}
.feature-card--b{grid-column:span 4;min-height:246px}
.feature-card--c{grid-column:span 3;min-height:222px}
.feature-card--primary{
  background:linear-gradient(150deg,rgba(34,211,238,.16),rgba(14,154,167,.07) 55%,rgba(255,255,255,.04));
  border-color:rgba(34,211,238,.4);
}
.feature-card--line{border-color:rgba(255,122,26,.35)}
.feature-num{
  position:absolute;right:14px;top:2px;font-size:78px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(148,197,255,.16);pointer-events:none;
}
.feature-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3);color:var(--c-primary);
  font-size:18px;margin-bottom:18px;
}
.feature-card--line .feature-icon{background:rgba(255,122,26,.12);border-color:rgba(255,122,26,.32);color:var(--c-accent)}
.feature-title{font-size:19px;font-weight:700;margin-bottom:10px;letter-spacing:-.01em}
.feature-text{font-size:14.5px;color:var(--c-ink-2);flex:1}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* 标签 / 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;padding:4px 10px;border-radius:999px;
  background:rgba(34,211,238,.12);color:var(--c-primary);border:1px solid rgba(34,211,238,.28);
  white-space:nowrap;
}
.badge-accent{background:rgba(255,122,26,.12);color:var(--c-accent);border-color:rgba(255,122,26,.3)}
.badge-muted{background:rgba(255,255,255,.05);color:var(--c-ink-2);border-color:var(--c-line)}
.tag{
  font-size:12.5px;color:var(--c-ink-2);border:1px solid var(--c-line);border-radius:8px;
  padding:4px 10px;background:rgba(255,255,255,.03);
}

/* 场景演示 */
.scene{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:44px;align-items:center;margin-bottom:72px}
.scene:last-child{margin-bottom:0}
.scene.reverse .scene-media{order:2}
.scene-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--c-line);aspect-ratio:16/10;background:var(--c-bg-2);box-shadow:var(--shadow)}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-body h3{font-size:22px;font-weight:800;margin-bottom:12px;letter-spacing:-.01em}
.scene-body p{font-size:15px;color:var(--c-ink-2);margin-bottom:18px}
.scene-points{display:flex;flex-direction:column;gap:12px;margin-bottom:22px}
.scene-points li{display:flex;gap:10px;font-size:14.5px;color:var(--c-ink-2)}
.scene-points i{color:var(--c-primary);margin-top:5px;font-size:12px}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.news-lead{grid-column:span 6;display:flex;flex-direction:column;overflow:hidden;padding:0}
.news-lead-media{aspect-ratio:16/9;overflow:hidden;background:var(--c-bg-2)}
.news-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-lead:hover .news-lead-media img{transform:scale(1.04)}
.news-lead-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-lead-body h3{font-size:20px;font-weight:700;line-height:1.5;letter-spacing:-.01em}
.news-lead-body p{font-size:14.5px;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-list{grid-column:span 6;display:flex;flex-direction:column;gap:14px}
.news-item{
  display:flex;gap:16px;padding:14px;border-radius:var(--radius);
  border:1px solid var(--c-line);background:var(--c-surface);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.news-item:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.35);box-shadow:var(--shadow-hover)}
.news-thumb{width:96px;height:72px;flex:0 0 96px;border-radius:var(--radius-sm);overflow:hidden;background:var(--c-bg-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-item-body{min-width:0;display:flex;flex-direction:column;gap:6px;flex:1}
.news-item-body h3{font-size:15.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item-body p{font-size:13.5px;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--c-ink-3);margin-top:auto;flex-wrap:wrap}
.news-meta .sep{width:1px;height:12px;background:var(--c-line)}
.news-meta .more{color:var(--c-primary)}
.empty-state{
  grid-column:span 12;min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:32px;border-radius:var(--radius);
  border:1px dashed rgba(148,197,255,.24);background:rgba(255,255,255,.03);
}
.empty-state i{font-size:30px;color:var(--c-ink-3)}
.empty-state p{font-size:14.5px;color:var(--c-ink-2)}

/* 社会认同 */
.proof-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:32px}
.proof-num{font-size:30px;font-weight:800;color:var(--c-accent);letter-spacing:-.02em}
.proof-label{font-size:13px;color:var(--c-ink-3);margin-top:4px}
.quote-row{display:grid;grid-template-columns:1.15fr .85fr .7fr;gap:20px;align-items:start;margin-bottom:28px}
.quote-card{padding:24px}
.quote-card.tall{min-height:220px}
.quote-card.mid{min-height:196px}
.quote-card.slim{min-height:172px}
.quote-text{font-size:14.5px;color:var(--c-ink-2);margin-bottom:16px}
.quote-name{font-size:13px;color:var(--c-ink-3);display:flex;align-items:center;gap:8px}
.quote-name strong{color:var(--c-ink);font-weight:600}
.badge-row{display:flex;flex-wrap:wrap;gap:12px;padding-top:24px;border-top:1px solid var(--c-line)}
.cert-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2);
  padding:9px 16px;border-radius:999px;border:1px solid var(--c-line);background:rgba(255,255,255,.04);
}
.cert-badge i{color:var(--c-primary)}

/* FAQ */
.faq{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--c-line);border-radius:var(--radius);background:var(--c-surface);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease}
.faq-item[open]{border-color:rgba(34,211,238,.35)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 22px;min-height:56px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);color:var(--c-primary);font-size:13px;transition:transform .25s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--c-primary)}
.faq-a{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid rgba(34,211,238,.3);
  background:linear-gradient(140deg,rgba(34,211,238,.14),rgba(6,11,20,.9) 58%);
  padding:44px;display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.6;pointer-events:none;
  background:repeating-linear-gradient(90deg,rgba(34,211,238,.06) 0 1px,transparent 1px 60px);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;margin-bottom:12px;letter-spacing:-.02em}
.cta-band p{font-size:15px;color:var(--c-ink-2);margin-bottom:20px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2}
.cta-form{position:relative;z-index:2;background:rgba(6,11,20,.55);border:1px solid var(--c-line);border-radius:var(--radius);padding:24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:8px}
.input{
  width:100%;height:46px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--c-line);color:var(--c-ink);
  padding:0 14px;transition:border-color .2s ease,box-shadow .2s ease;
}
.input::placeholder{color:var(--c-ink-3)}
.input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(34,211,238,.16);outline:none}
.form-note{font-size:12.5px;color:var(--c-ink-3);margin-top:12px}
.form-tip{font-size:12.5px;color:var(--c-primary);margin-top:12px;display:none}
.form-tip.show{display:block}
.form-error{font-size:12px;color:var(--c-danger);margin-top:6px;display:none}
.form-error.show{display:block}

/* 页脚 */
.site-footer{margin-top:72px;border-top:1px solid transparent;position:relative;background:linear-gradient(180deg,rgba(11,18,32,.7),rgba(6,11,20,.98))}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.65) 30%,rgba(255,122,26,.5) 70%,transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;padding:56px 0 36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-title{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:14px}
.footer-desc{font-size:13.5px;color:var(--c-ink-3);line-height:1.85;max-width:340px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13.5px;color:var(--c-ink-2)}
.footer-links a:hover{color:var(--c-primary)}
.footer-contact li{font-size:13.5px;color:var(--c-ink-2);display:flex;gap:10px;margin-bottom:10px}
.footer-contact i{color:var(--c-primary);margin-top:4px;font-size:13px}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-ink-3);
}

/* 底部固定转化条 */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:65;
  background:rgba(6,11,20,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid rgba(34,211,238,.28);
}
.sticky-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.sticky-text{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--c-ink-2)}
.sticky-text i{color:var(--c-accent)}

/* 响应式 */
@media (max-width:1280px){
  .feature-card--a{grid-column:span 6}
  .feature-card--b{grid-column:span 6}
  .feature-card--c{grid-column:span 12}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-copy{max-width:none}
  .hero-visual{order:2}
  .stats-inner{grid-template-columns:repeat(2,1fr)}
  .news-lead,.news-list{grid-column:span 12}
  .scene{grid-template-columns:1fr;gap:26px}
  .scene.reverse .scene-media{order:0}
  .proof-strip{grid-template-columns:repeat(2,1fr)}
  .quote-row{grid-template-columns:1fr 1fr}
  .quote-card.slim{grid-column:span 2}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start}
  .feature-card--a,.feature-card--b,.feature-card--c{grid-column:span 12;min-height:auto}
  .brand-text em{display:none}
  .hero{padding:44px 0 40px}
  .hero-trust{gap:16px}
  .quote-row{grid-template-columns:1fr}
  .quote-card.slim{grid-column:span 1}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .sticky-text{display:none}
  .sticky-inner{height:64px;justify-content:center}
  .sticky-inner .btn-glow{width:100%;max-width:360px}
  body{padding-bottom:76px}
}
@media (max-width:520px){
  .brand-text strong{font-size:15px;white-space:normal}
  .hero-title{font-size:28px}
  .stats-inner{grid-template-columns:1fr}
  .proof-strip{grid-template-columns:1fr}
  .news-item{flex-direction:column}
  .news-thumb{width:100%;height:150px;flex:0 0 auto}
  .cta-band{padding:24px}
  .btn-glow,.btn-ghost{width:100%}
  .hero-actions{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --c-bg:#060B14;
  --c-bg-2:#0B1220;
  --c-surface:rgba(255,255,255,0.05);
  --c-surface-2:rgba(255,255,255,0.075);
  --c-line:rgba(148,197,255,0.14);
  --c-primary:#22D3EE;
  --c-primary-deep:#0E9AA7;
  --c-accent:#FF7A1A;
  --c-ink:#E6EEF8;
  --c-ink-2:#9FB0C6;
  --c-ink-3:#6B7C93;
  --c-danger:#FF6B6B;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --shadow-card:0 16px 40px rgba(2,8,20,.55);
  --shadow-glow:0 8px 40px rgba(34,211,238,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:80px;
  background:
    radial-gradient(1100px 520px at 12% -10%, rgba(34,211,238,.10), transparent 62%),
    radial-gradient(900px 480px at 92% 4%, rgba(255,122,26,.07), transparent 60%),
    var(--c-bg);
  color:var(--c-ink);
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.02em;line-height:1.25;color:var(--c-ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),opacity .22s var(--ease)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(34,211,238,.28)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  height:68px;
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--c-line);
}
.header-inner{height:68px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-badge{
  width:40px;height:40px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-deep));
  color:#04202a;font-weight:800;font-size:19px;
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 24px -10px rgba(34,211,238,.75);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:-0.01em;white-space:nowrap}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-ink-3);letter-spacing:.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:14.5px;color:var(--c-ink-2);font-weight:500;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:linear-gradient(90deg,var(--c-primary),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--c-ink);background:rgba(255,255,255,.045)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-primary);background:rgba(34,211,238,.10)}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:12px;
  background:linear-gradient(135deg,#4CE3F5,var(--c-primary) 45%,var(--c-primary-deep));
  color:#04202a;font-size:15px;font-weight:800;letter-spacing:.01em;
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 30px -8px rgba(34,211,238,.55);
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-glow:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.5),0 16px 36px -10px rgba(34,211,238,.7)}
.btn-glow:active{transform:translateY(1px)}
.btn-glow.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:11px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:12px;
  border:1px solid rgba(34,211,238,.55);color:var(--c-primary);
  font-size:15px;font-weight:700;background:rgba(34,211,238,.05);
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.btn-ghost:hover{background:rgba(34,211,238,.14);border-color:var(--c-primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;font-size:18px;
  border:1px solid var(--c-line);color:var(--c-ink);background:var(--c-surface);
}

/* ---------- category hero ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line)}
.cat-hero__bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.30;transform:scale(1.03);
}
.cat-hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,11,20,.96) 8%,rgba(6,11,20,.78) 46%,rgba(11,18,32,.66) 100%);
}
.cat-hero__grid{
  position:absolute;inset:0;pointer-events:none;opacity:.75;
  background-image:linear-gradient(rgba(148,197,255,.075) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(148,197,255,.075) 1px,transparent 1px);
  background-size:52px 52px;
}
.cat-hero__inner{position:relative;z-index:3;padding:44px 24px 46px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-3);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .cur{color:var(--c-primary)}
.cat-hero h1{font-size:clamp(30px,4.6vw,50px);max-width:16em}
.cat-hero__sub{margin-top:16px;max-width:720px;color:var(--c-ink-2);font-size:16px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;align-items:center}
.hero-trust{display:flex;flex-wrap:wrap;gap:20px;margin-top:24px;font-size:13px;color:var(--c-ink-3)}
.hero-trust span{display:inline-flex;align-items:center;gap:7px}
.hero-trust i{color:var(--c-primary);font-size:12px}

/* ---------- section base ---------- */
.section{padding:56px 0}
.section--tight{padding:44px 0}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--c-primary);
  padding:5px 12px;border-radius:999px;border:1px solid rgba(34,211,238,.32);
  background:rgba(34,211,238,.09);margin-bottom:16px;text-transform:none;
}
.sec-head h2{font-size:clamp(22px,3vw,34px)}
.sec-head p{margin-top:14px;color:var(--c-ink-2);font-size:15.5px}

/* ---------- two-column intro ---------- */
.intro-grid{display:grid;grid-template-columns:5fr 7fr;gap:26px;align-items:start}
.intro-left h2{font-size:clamp(23px,2.8vw,34px);line-height:1.28}
.intro-left p{margin-top:16px;color:var(--c-ink-2);font-size:15.5px}
.intro-left .kbd-note{
  margin-top:22px;display:flex;gap:12px;align-items:flex-start;
  padding:16px 18px;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:var(--c-surface);
  font-size:13.5px;color:var(--c-ink-2);
}
.intro-left .kbd-note i{color:var(--c-accent);margin-top:3px}
.point-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.glass-card{
  position:relative;
  background:var(--c-surface);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
  padding:22px;
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease),background .28s var(--ease);
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:rgba(34,211,238,.35);
  box-shadow:var(--shadow-card),var(--shadow-glow);
  background:var(--c-surface-2);
}
.point-card .p-ico{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.12);color:var(--c-primary);font-size:17px;margin-bottom:14px;
  border:1px solid rgba(34,211,238,.25);
}
.point-card h3{font-size:17px;margin-bottom:9px}
.point-card p{font-size:14px;color:var(--c-ink-2);line-height:1.8}
.point-card--accent{
  background:linear-gradient(150deg,rgba(34,211,238,.16),rgba(255,122,26,.07) 70%,rgba(255,255,255,.04));
  border-color:rgba(34,211,238,.36);
}
.point-card--accent .p-ico{background:linear-gradient(140deg,var(--c-accent),#ff9d4d);color:#2a1200;border-color:transparent}

/* ---------- numbered strips ---------- */
.strips{display:flex;flex-direction:column;gap:16px}
.strip{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:96px 1fr auto;gap:22px;align-items:center;
  padding:22px 26px;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:var(--c-surface);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.strip:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.34);box-shadow:var(--shadow-glow)}
.strip__num{
  font-size:40px;font-weight:800;line-height:1;color:transparent;
  -webkit-text-stroke:1.4px rgba(34,211,238,.6);
  font-variant-numeric:tabular-nums;
}
.strip__body h3{font-size:17.5px;margin-bottom:7px}
.strip__body p{font-size:14px;color:var(--c-ink-2);max-width:760px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;padding:5px 12px;border-radius:999px;
  background:rgba(34,211,238,.12);color:var(--c-primary);
  border:1px solid rgba(34,211,238,.28);white-space:nowrap;
}
.badge--orange{background:rgba(255,122,26,.13);color:#FFA45C;border-color:rgba(255,122,26,.3)}
.strip__side{display:flex;align-items:center;gap:12px}
.strip__go{color:var(--c-ink-3);font-size:14px}
.strip:hover .strip__go{color:var(--c-primary)}

/* ---------- feature blocks (2 columns) ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature-card{
  overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--c-line);background:var(--c-surface);
  box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.feature-card:hover{transform:translateY(-5px);border-color:rgba(34,211,238,.34);box-shadow:var(--shadow-card),var(--shadow-glow)}
.feature-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.feature-card__body{padding:24px}
.feature-card__body h3{font-size:19px;margin-bottom:12px}
.feature-card__body p{font-size:14.5px;color:var(--c-ink-2)}
.tick-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.tick-list li{display:flex;gap:10px;font-size:14px;color:var(--c-ink-2)}
.tick-list i{color:var(--c-primary);font-size:12px;margin-top:6px}

/* ---------- stat bar ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:2px;
  border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;
  background:rgba(255,255,255,.03);
}
.stat-cell{padding:26px 22px;background:rgba(255,255,255,.02);text-align:left}
.stat-cell .stat-num{
  font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1;
  color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:-0.02em;
}
.stat-cell .stat-num.accent{color:var(--c-accent)}
.stat-cell small{display:block;margin-top:10px;font-size:13px;color:var(--c-ink-3)}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  border:1px solid var(--c-line);border-radius:var(--r-md);
  background:var(--c-surface);overflow:hidden;
  transition:border-color .26s var(--ease),background .26s var(--ease);
}
.faq-item[open]{border-color:rgba(34,211,238,.34);background:rgba(34,211,238,.05)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:58px;padding:0 22px;font-size:16px;font-weight:700;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-ico{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.14);color:var(--c-primary);font-size:12px;
  transition:transform .28s var(--ease),background .28s var(--ease);
}
.faq-item[open] .faq-ico{transform:rotate(180deg);background:rgba(34,211,238,.24)}
.faq-item .faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid rgba(34,211,238,.28);
  background:linear-gradient(120deg,rgba(34,211,238,.14),rgba(11,18,32,.85) 55%,rgba(255,122,26,.10));
  padding:44px 40px;
  box-shadow:var(--shadow-card);
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(148,197,255,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(148,197,255,.07) 1px,transparent 1px);
  background-size:46px 46px;
}
.cta-panel__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr auto;gap:28px;align-items:center}
.cta-panel h2{font-size:clamp(22px,2.8vw,32px)}
.cta-panel p{margin-top:14px;color:var(--c-ink-2);font-size:15px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- notice form ---------- */
.notice-form{margin-top:26px;max-width:620px}
.field label{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:8px}
.field-row{display:flex;gap:12px;flex-wrap:wrap}
.field input{
  flex:1 1 260px;height:48px;border-radius:12px;padding:0 16px;
  background:rgba(6,11,20,.7);border:1px solid var(--c-line);
  color:var(--c-ink);font-size:15px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
  background:rgba(6,11,20,.92);
}
.form-hint{margin-top:10px;font-size:12px;color:var(--c-ink-3)}
.form-err{margin-top:8px;font-size:12px;color:var(--c-danger);display:none}

/* ---------- footer ---------- */
.site-footer{
  position:relative;margin-top:36px;
  border-top:1px solid transparent;
  background:linear-gradient(180deg,rgba(11,18,32,.85),rgba(6,11,20,.98));
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.75),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px;
  padding:54px 0 34px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--c-ink-2);max-width:340px}
.footer-title{font-size:14px;color:var(--c-ink);margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--c-ink-2)}
.footer-links a:hover{color:var(--c-primary)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-ink-2)}
.footer-contact i{color:var(--c-primary);font-size:13px;margin-top:6px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-ink-3);
}

/* ---------- sticky bottom bar ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  height:72px;
  display:flex;align-items:center;
  background:rgba(6,11,20,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid rgba(34,211,238,.32);
}
.bottom-bar .container{display:flex;align-items:center;justify-content:space-between;gap:18px}
.bottom-bar__text{font-size:14.5px;color:var(--c-ink-2);display:flex;align-items:center;gap:10px}
.bottom-bar__text i{color:var(--c-primary)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .brand-text em{display:none}
  .nav-links{
    position:fixed;top:68px;right:0;
    width:min(86vw,340px);height:calc(100vh - 68px);
    background:rgba(6,11,20,.97);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--c-line);
    flex-direction:column;align-items:stretch;gap:2px;
    padding:18px;margin-left:0;
    transform:translateX(106%);
    transition:transform .32s var(--ease);
    overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-link{padding:15px 12px;font-size:15px;border-bottom:1px solid var(--c-line);border-radius:8px}
  .nav-link::after{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-glow.btn-sm{display:none}
  .intro-grid{grid-template-columns:1fr;gap:24px}
  .cta-panel__inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 28px}
}
@media (max-width:768px){
  .section{padding:44px 0}
  .cat-hero__inner{padding:34px 24px 38px}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr}
  .strip{grid-template-columns:64px 1fr;gap:16px;padding:20px}
  .strip__side{grid-column:1 / -1;justify-content:flex-start;padding-left:80px}
  .strip__num{font-size:32px}
  .cta-panel{padding:32px 24px}
  .point-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .cat-hero__inner{padding:30px 16px 34px}
  .brand-text strong{font-size:14.5px}
  .hero-btns .btn-glow,.hero-btns .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .bottom-bar{height:64px}
  .bottom-bar__text span{display:none}
  .bottom-bar__text::before{content:"点击进入";font-size:14px;color:var(--c-ink)}
  .field input{flex:1 1 100%}
}

/* roulang page: article */
:root{
  --c-bg:#060B14;
  --c-bg-2:#0B1220;
  --c-surface:rgba(255,255,255,.05);
  --c-surface-2:rgba(255,255,255,.08);
  --c-line:rgba(148,197,255,.14);
  --c-primary:#22D3EE;
  --c-primary-deep:#0E9AA7;
  --c-accent:#FF7A1A;
  --c-ink:#E6EEF8;
  --c-ink-2:#9FB0C6;
  --c-ink-3:#6B7C93;
  --c-danger:#FF6B6B;
  --radius:16px;
  --radius-lg:20px;
  --radius-sm:12px;
  --shadow:0 16px 40px rgba(2,8,20,.55);
  --shadow-hover:0 8px 40px rgba(34,211,238,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  background-color:var(--c-bg);
  background-image:
    radial-gradient(900px 520px at 10% -12%, rgba(34,211,238,.10), transparent 62%),
    radial-gradient(760px 460px at 94% 2%, rgba(255,122,26,.07), transparent 64%);
  background-repeat:no-repeat;
  color:var(--c-ink);
  font-size:15px;
  line-height:1.7;
  padding-bottom:88px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;}
.num{font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,11,20,.78);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.scrolled{box-shadow:0 12px 34px rgba(2,8,20,.6);background:rgba(6,11,20,.92);}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-badge{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  font-size:17px;font-weight:800;color:#04121A;
  background:linear-gradient(135deg,#7DF0FF,var(--c-primary) 55%,var(--c-primary-deep));
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 8px 22px -10px rgba(34,211,238,.8);
}
.brand-text{display:flex;flex-direction:column;line-height:1.18;}
.brand-text strong{font-size:16px;font-weight:800;color:var(--c-ink);white-space:nowrap;letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-ink-3);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:9px 13px;border-radius:10px;
  font-size:14px;color:var(--c-ink-2);white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-deep));
  transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--c-ink);background:rgba(34,211,238,.08);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);}
.nav-link.active::after{transform:scaleX(1);}
.nav-link:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;cursor:pointer;
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-ink);
  align-items:center;justify-content:center;font-size:16px;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.4);}
.nav-toggle:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* ---------- 按钮 ---------- */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:12px;border:0;cursor:pointer;
  font-size:15px;font-weight:700;color:#04121A;white-space:nowrap;
  background:linear-gradient(135deg,#7DF0FF,var(--c-primary) 55%,var(--c-primary-deep));
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 30px -8px rgba(34,211,238,.55);
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-glow:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.5),0 16px 36px -10px rgba(34,211,238,.7);}
.btn-glow:active{transform:translateY(1px);}
.btn-glow:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:11px;}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:12px;cursor:pointer;
  font-size:15px;font-weight:700;color:var(--c-primary);
  background:transparent;border:1px solid rgba(34,211,238,.55);
  transition:background .22s var(--ease),transform .2s var(--ease),border-color .22s var(--ease);
}
.btn-outline:hover{background:rgba(34,211,238,.12);border-color:var(--c-primary);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(1px);}
.btn-outline:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6;
  background:rgba(34,211,238,.14);color:var(--c-primary);
  border:1px solid rgba(34,211,238,.24);
  clip-path:polygon(8px 0,100% 0,100% 100%,0 100%,0 8px);
}
.badge-accent{background:rgba(255,122,26,.14);color:var(--c-accent);border-color:rgba(255,122,26,.28);}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  font-size:12.5px;color:var(--c-ink-2);background:var(--c-surface);
  border:1px solid var(--c-line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.tag:hover{color:var(--c-primary);border-color:rgba(34,211,238,.45);background:rgba(34,211,238,.10);}

/* ---------- 顶部文章承载区 ---------- */
.article-top{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--c-line);
  background-image:
    linear-gradient(180deg,rgba(9,15,28,.9),rgba(6,11,20,.97)),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.article-top::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(148,197,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,197,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,#000 0%,transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 92%);
}
.article-top .container{position:relative;z-index:2;padding-top:30px;padding-bottom:38px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);margin-bottom:18px;}
.breadcrumb a{color:var(--c-ink-2);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:rgba(148,197,255,.3);}
.breadcrumb .current{color:var(--c-ink-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-top h1{
  font-size:clamp(26px,3.6vw,40px);
  color:var(--c-ink);max-width:920px;margin-bottom:18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--c-ink-3);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta .meta-item i{color:var(--c-primary);font-size:12px;}

/* ---------- 主体布局 ---------- */
.article-main{padding:48px 0 76px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;}
.article-col{min-width:0;}

.glass-card{
  background:var(--c-surface);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
}
.article-body-wrap{padding:34px 30px 40px;}
.article-body{max-width:760px;margin:0 auto;font-size:16px;line-height:1.9;color:#CFDCEC;overflow-wrap:break-word;}
.article-body > * + *{margin-top:1.2em;}
.article-body p{margin:0;font-size:16px;line-height:1.9;color:#CFDCEC;}
.article-body h2{
  position:relative;margin:2.2em 0 .85em;padding-left:16px;
  font-size:clamp(20px,2.2vw,24px);font-weight:800;color:var(--c-ink);
}
.article-body h2:first-child{margin-top:0;}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep));
}
.article-body h3{margin:1.7em 0 .6em;font-size:17.5px;font-weight:700;color:var(--c-ink);}
.article-body img{max-width:100%;height:auto;border-radius:12px;margin:1.6em auto;box-shadow:var(--shadow);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:12px;color:var(--c-ink-3);text-align:center;margin-top:10px;line-height:1.6;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--c-primary);
  background:rgba(34,211,238,.07);border-radius:0 12px 12px 0;
  color:var(--c-ink-2);font-size:15.5px;
}
.article-body blockquote p{color:var(--c-ink-2);font-size:15.5px;}
.article-body ul{margin:1.2em 0;padding-left:1.3em;}
.article-body ul > li{position:relative;margin:.5em 0;padding-left:.2em;}
.article-body ul > li::before{
  content:"";position:absolute;left:-1.05em;top:.78em;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 8px rgba(34,211,238,.7);
}
.article-body ol{margin:1.2em 0;padding-left:1.6em;list-style:decimal;}
.article-body ol > li{margin:.5em 0;}
.article-body ol > li::marker{color:var(--c-primary);font-weight:700;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(34,211,238,.4);}
.article-body a:hover{color:#7DF0FF;}
.article-body strong{color:var(--c-ink);font-weight:700;}
.article-body table{width:100%;margin:1.6em 0;font-size:14.5px;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;}
.article-body thead{background:rgba(34,211,238,.10);}
.article-body th{padding:12px 14px;text-align:left;font-size:13.5px;font-weight:700;color:var(--c-ink);white-space:nowrap;}
.article-body td{padding:12px 14px;color:var(--c-ink-2);border-top:1px solid var(--c-line);}
.article-body tbody tr:hover{background:rgba(34,211,238,.05);}
.article-body hr{border:0;height:1px;background:var(--c-line);margin:2em 0;}

/* 空态 */
.empty-state{
  max-width:560px;margin:0 auto;padding:56px 24px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state i{font-size:34px;color:var(--c-primary);opacity:.85;}
.empty-state p{font-size:16px;color:var(--c-ink-2);}

/* ---------- 侧栏 ---------- */
.side-col{display:none;min-width:0;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius);
  padding:20px;margin-bottom:20px;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.side-card:hover{border-color:rgba(34,211,238,.35);box-shadow:var(--shadow-hover);}
.side-title{
  font-size:14px;font-weight:800;color:var(--c-ink);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:3px;height:14px;border-radius:3px;background:var(--c-primary);}
.side-list li + li{border-top:1px solid var(--c-line);}
.side-list a{
  display:flex;align-items:center;gap:10px;padding:11px 0;
  font-size:14px;color:var(--c-ink-2);transition:color .2s var(--ease),transform .2s var(--ease);
}
.side-list a i{color:var(--c-primary);font-size:13px;width:16px;text-align:center;}
.side-list a:hover{color:var(--c-primary);transform:translateX(3px);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.side-cta p{font-size:13.5px;color:var(--c-ink-2);margin-bottom:14px;line-height:1.75;}

/* ---------- 相关推荐 ---------- */
.related{margin-top:44px;}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px;}
.related-head h2{font-size:clamp(19px,2vw,24px);color:var(--c-ink);}
.related-head a{font-size:13.5px;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.related-head a:hover{color:#7DF0FF;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.4);box-shadow:var(--shadow-hover);}
.rel-card:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rel-card .rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;}
.rel-card h3{font-size:15px;font-weight:700;color:var(--c-ink);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-card:hover h3{color:var(--c-primary);}
.rel-card span{font-size:12px;color:var(--c-ink-3);}

.back-list{
  display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:28px;
  padding:18px 22px;border-radius:var(--radius);
  background:linear-gradient(90deg,rgba(34,211,238,.10),transparent 70%);
  border:1px solid var(--c-line);
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.back-list:hover{border-color:rgba(34,211,238,.45);transform:translateX(3px);}
.back-list .bl-text{font-size:14.5px;color:var(--c-ink);font-weight:700;}
.back-list .bl-sub{font-size:12.5px;color:var(--c-ink-3);font-weight:400;display:block;margin-top:3px;}
.back-list i{color:var(--c-primary);}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 88px;}
.cta-box{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid rgba(34,211,238,.28);
  background-image:
    linear-gradient(120deg,rgba(9,16,30,.94),rgba(6,11,20,.86)),
    url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  padding:44px 40px;box-shadow:var(--shadow);
}
.cta-box::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(148,197,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,197,255,.05) 1px,transparent 1px);
  background-size:52px 52px;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:36px;align-items:center;}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);color:var(--c-ink);margin-bottom:12px;}
.cta-inner p{font-size:14.5px;color:var(--c-ink-2);line-height:1.85;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.cta-form{display:flex;flex-direction:column;gap:10px;}
.cta-form label{font-size:13px;color:var(--c-ink-2);}
.cta-form input{
  height:46px;padding:0 16px;border-radius:12px;font-size:14.5px;
  background:rgba(6,11,20,.7);border:1px solid var(--c-line);color:var(--c-ink);
  outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cta-form input::placeholder{color:var(--c-ink-3);}
.cta-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(34,211,238,.18);}
.cta-form .form-note{font-size:12px;color:var(--c-ink-3);}
.cta-form .form-error{font-size:12px;color:var(--c-danger);display:none;}
.cta-form .form-error.show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:rgba(6,11,20,.9);
  border-top:1px solid var(--c-line);
  padding:56px 0 26px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.7),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-desc{font-size:13.5px;color:var(--c-ink-3);line-height:1.85;max-width:340px;}
.footer-title{font-size:14px;font-weight:800;color:var(--c-ink);margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:13.5px;color:var(--c-ink-2);transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-links a:hover{color:var(--c-primary);transform:translateX(3px);}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--c-ink-2);line-height:1.7;}
.footer-contact i{color:var(--c-primary);font-size:13px;margin-top:4px;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:12.5px;color:var(--c-ink-3);
}

/* ---------- 底部固定条 ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;height:72px;
  background:rgba(6,11,20,.88);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid rgba(34,211,238,.32);
}
.bottom-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.bottom-text{font-size:14px;color:var(--c-ink-2);display:inline-flex;align-items:center;gap:9px;}
.bottom-text i{color:var(--c-primary);}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:44px;}
  .side-col{display:block;position:sticky;top:92px;align-self:start;}
  .article-body-wrap{padding:42px 44px 50px;}
}
@media (max-width:1023px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:960px){
  .nav-links{
    position:fixed;top:68px;right:0;width:min(320px,84vw);
    height:calc(100vh - 68px);margin-left:0;
    flex-direction:column;align-items:stretch;gap:4px;padding:20px;
    background:rgba(8,14,26,.98);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--c-line);
    transform:translateX(102%);transition:transform .3s var(--ease);
    overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-link{padding:14px 12px;font-size:15px;}
  .nav-link::after{left:12px;right:12px;bottom:6px;}
  .nav-toggle{display:flex;}
  .brand-text em{display:none;}
}
@media (max-width:768px){
  .container{padding-left:18px;padding-right:18px;}
  .article-main{padding:34px 0 60px;}
  .article-top .container{padding-top:22px;padding-bottom:28px;}
  .article-body-wrap{padding:26px 20px 32px;}
  .article-body,.article-body p{font-size:15.5px;line-height:1.88;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .cta-box{padding:32px 22px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-desc{max-width:none;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
}
@media (max-width:640px){
  body{padding-bottom:78px;}
  .bottom-bar{height:64px;}
  .bottom-inner{justify-content:center;}
  .bottom-text{display:none;}
  .article-top h1{font-size:clamp(22px,6vw,28px);}
  .back-list{flex-direction:column;align-items:flex-start;gap:12px;}
  .brand-text strong{font-size:15px;}
}

/* roulang page: category2 */
:root{
  --c-bg:#060B14;
  --c-bg-2:#0B1220;
  --c-surface:rgba(255,255,255,.05);
  --c-surface-2:rgba(255,255,255,.08);
  --c-line:rgba(148,197,255,.14);
  --c-line-strong:rgba(148,197,255,.30);
  --c-primary:#22D3EE;
  --c-primary-deep:#0E9AA7;
  --c-accent:#FF7A1A;
  --c-ink:#E6EEF8;
  --c-ink-2:#9FB0C6;
  --c-ink-3:#6B7C93;
  --c-danger:#FF6B6B;
  --r-xs:8px;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-card:0 16px 40px rgba(2,8,20,.55);
  --sh-glow:0 8px 40px rgba(34,211,238,.18);
  --w-container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  background:var(--c-bg);
  color:var(--c-ink);
  font-size:16px;
  line-height:1.7;
  padding-bottom:80px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:'';
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(920px 540px at 10% -12%, rgba(34,211,238,.16), transparent 62%),
    radial-gradient(760px 520px at 94% 2%, rgba(255,122,26,.10), transparent 64%),
    linear-gradient(180deg,#060B14 0%,#0B1220 58%,#060B14 100%);
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .22s ease;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:rgba(34,211,238,.3);color:#fff;}
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 24px;position:relative;z-index:2;}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,11,20,.62);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(6,11,20,.9);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--c-line);
  box-shadow:0 12px 34px rgba(2,8,20,.6);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:68px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-badge{
  width:40px;height:40px;flex:0 0 40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));
  color:#04131A;font-weight:900;font-size:19px;
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 8px 24px -8px rgba(34,211,238,.6);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16.5px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-ink-3);letter-spacing:.02em;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:14.5px;
  color:var(--c-ink-2);
  border-radius:var(--r-sm);
  white-space:nowrap;
}
.nav-link::after{
  content:'';
  position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-deep));
  transform:scaleX(0);transform-origin:left;
  transition:transform .28s ease;
}
.nav-link:hover{color:var(--c-ink);background:rgba(255,255,255,.045);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);background:rgba(34,211,238,.08);}
.nav-link.active::after{transform:scaleX(1);}
.nav-link:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;
  border-radius:var(--r-md);
  background:var(--c-surface);border:1px solid var(--c-line);
  color:var(--c-ink);font-size:16px;cursor:pointer;
  align-items:center;justify-content:center;
  transition:background .2s,border-color .2s;
}
.nav-toggle:hover{background:var(--c-surface-2);border-color:var(--c-line-strong);}
.nav-toggle:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.nav-mask{
  position:fixed;inset:0;z-index:55;
  background:rgba(2,6,14,.62);
  backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;
}
body.nav-open .nav-mask{opacity:1;visibility:visible;}

/* ============ buttons ============ */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;
  border-radius:var(--r-md);
  font-size:15px;font-weight:800;letter-spacing:.01em;
  cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease,filter .2s ease,box-shadow .25s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(135deg,#22D3EE,#0E9AA7);
  color:#04131A;
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 30px -8px rgba(34,211,238,.55);
}
.btn-glow:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.5),0 16px 38px -10px rgba(34,211,238,.7);}
.btn-glow:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--c-primary);
  border-color:rgba(34,211,238,.5);
}
.btn-ghost:hover{background:rgba(34,211,238,.1);border-color:var(--c-primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-glow:focus-visible,.btn-ghost:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm);}
.btn-block{width:100%;}

/* ============ hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  min-height:300px;
  padding:52px 0 48px;
  display:flex;
  align-items:center;
  border-bottom:1px solid var(--c-line);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.4;
}
.page-hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(6,11,20,.97) 6%,rgba(6,11,20,.82) 46%,rgba(6,11,20,.52) 100%);
}
.page-hero::after{
  content:'';
  position:absolute;inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(148,197,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,197,255,.07) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(640px 320px at 26% 50%,#000,transparent 78%);
  mask-image:radial-gradient(640px 320px at 26% 50%,#000,transparent 78%);
}
.page-hero-inner{position:relative;z-index:2;max-width:830px;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--c-ink-3);margin-bottom:16px;
}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-ink-3);}
.page-hero h1{
  font-size:clamp(30px,5vw,52px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.02em;
  margin:14px 0 14px;
}
.page-hero h1 span{color:var(--c-primary);}
.hero-sub{
  font-size:16px;color:var(--c-ink-2);max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  border-radius:999px;
  background:rgba(34,211,238,.13);
  border:1px solid rgba(34,211,238,.3);
  color:var(--c-primary);
}
.tag-accent{background:rgba(255,122,26,.13);border-color:rgba(255,122,26,.32);color:var(--c-accent);}

/* ============ sections ============ */
.section{padding:64px 0;position:relative;}
.section-alt{background:linear-gradient(180deg,rgba(11,18,32,.75),rgba(6,11,20,0));border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(22px,3vw,34px);
  font-weight:800;letter-spacing:-.02em;line-height:1.24;
  margin:14px 0 12px;
}
.section-sub{color:var(--c-ink-2);font-size:15.5px;}

/* ============ stat band ============ */
.stat-band{padding:0;position:relative;z-index:3;margin-top:-1px;}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  margin:28px 0 0;
}
.stat-item{
  background:rgba(9,15,26,.9);
  padding:22px 20px;
  display:flex;flex-direction:column;gap:4px;
  transition:background .25s;
}
.stat-item:hover{background:rgba(34,211,238,.07);}
.stat-num{
  font-size:clamp(28px,3.4vw,38px);
  font-weight:800;color:var(--c-primary);
  line-height:1.1;font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat-num.accent{color:var(--c-accent);}
.stat-label{font-size:13px;color:var(--c-ink-3);}

/* ============ timeline ============ */
.timeline{position:relative;padding-top:6px;}
.timeline::before{
  content:'';
  position:absolute;left:50%;top:0;bottom:0;width:1px;
  transform:translateX(-.5px);
  background:linear-gradient(180deg,transparent,var(--c-line-strong) 12%,var(--c-line-strong) 88%,transparent);
}
.tl-item{
  position:relative;
  width:calc(50% - 42px);
  padding-bottom:34px;
}
.tl-item:nth-child(even){margin-left:calc(50% + 42px);}
.tl-dot{
  position:absolute;top:22px;
  width:40px;height:40px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;
  font-variant-numeric:tabular-nums;
  color:var(--c-primary);
  background:rgba(10,18,30,.96);
  border:1px solid rgba(34,211,238,.45);
  box-shadow:0 0 0 5px rgba(6,11,20,.9),0 8px 26px -10px rgba(34,211,238,.7);
}
.tl-item:nth-child(odd) .tl-dot{left:calc(100% + 22px);}
.tl-item:nth-child(even) .tl-dot{left:-62px;}
.tl-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:24px 24px 22px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.35);box-shadow:var(--sh-card),var(--sh-glow);}
.tl-card h3{font-size:18px;font-weight:800;letter-spacing:-.01em;margin-bottom:10px;}
.tl-card p{font-size:14.5px;color:var(--c-ink-2);}
.tl-list{margin-top:14px;display:grid;gap:9px;}
.tl-list li{
  position:relative;padding-left:20px;
  font-size:14px;color:var(--c-ink-2);
}
.tl-list li::before{
  content:'';position:absolute;left:2px;top:10px;
  width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 8px rgba(34,211,238,.9);
}

/* ============ split blocks ============ */
.split{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:44px;
  align-items:center;
}
.split + .split{margin-top:64px;}
.split-reverse .split-media{order:2;}
.split-reverse .split-body{order:1;}
.split-media{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--c-line-strong);
  box-shadow:var(--sh-card),0 0 0 1px rgba(34,211,238,.12);
  aspect-ratio:16/10;
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;}
.split-media:hover img{transform:scale(1.04);}
.split-media::after{
  content:'';
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,0) 40%,rgba(6,11,20,.62));
}
.split-body h3{
  font-size:clamp(20px,2.4vw,26px);
  font-weight:800;letter-spacing:-.02em;line-height:1.3;
  margin:14px 0 12px;
}
.split-body p{font-size:15px;color:var(--c-ink-2);}
.split-points{margin-top:18px;display:grid;gap:12px;}
.split-points li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:14.5px;color:var(--c-ink-2);
}
.split-points i{
  color:var(--c-primary);font-size:14px;margin-top:5px;
}
.link-cta{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:22px;
  font-size:14.5px;font-weight:700;color:var(--c-primary);
  border-bottom:1px solid rgba(34,211,238,.35);
  padding-bottom:3px;
  transition:color .2s,border-color .2s,gap .2s;
}
.link-cta:hover{color:#7DF0FF;border-color:#7DF0FF;gap:12px;}

/* ============ asymmetric grid ============ */
.asym-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:24px;
  align-items:start;
}
.asym-side{display:grid;gap:24px;}
.feature-card{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  padding:26px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.35);box-shadow:var(--sh-card),var(--sh-glow);}
.feature-card h3{font-size:18px;font-weight:800;margin-bottom:10px;letter-spacing:-.01em;}
.feature-card p{font-size:14.5px;color:var(--c-ink-2);}
.feature-main{
  padding:0;
  border-color:rgba(34,211,238,.34);
  background:linear-gradient(160deg,rgba(34,211,238,.10),rgba(11,18,32,.6) 55%);
}
.feature-main .fm-media{aspect-ratio:16/9;overflow:hidden;}
.feature-main .fm-media img{width:100%;height:100%;object-fit:cover;}
.feature-main .fm-body{padding:26px;}
.fm-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.fm-num{
  position:absolute;right:18px;bottom:6px;
  font-size:72px;font-weight:900;line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(148,197,255,.22);
  pointer-events:none;
}
.mini-list{margin-top:14px;display:grid;gap:10px;}
.mini-list li{
  display:flex;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--c-ink-2);
  padding-bottom:9px;
  border-bottom:1px dashed rgba(148,197,255,.16);
}
.mini-list li:last-child{border-bottom:0;padding-bottom:0;}
.mini-list b{color:var(--c-ink);font-weight:700;font-variant-numeric:tabular-nums;}

/* ============ device chips ============ */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;
  font-size:13px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--c-line);
  color:var(--c-ink-2);
  transition:border-color .2s,color .2s,background .2s;
}
.chip:hover{border-color:rgba(34,211,238,.4);color:var(--c-primary);background:rgba(34,211,238,.07);}
.chip i{color:var(--c-primary);font-size:13px;}

/* ============ faq ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  background:var(--c-surface);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .25s,background .25s;
}
.faq-item[open]{border-color:rgba(34,211,238,.35);background:rgba(34,211,238,.05);}
.faq-item summary{
  list-style:none;cursor:pointer;
  min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 22px;
  font-size:15.5px;font-weight:700;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:-2px;}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  border:1px solid rgba(34,211,238,.4);
  color:var(--c-primary);font-size:13px;
  transition:transform .3s ease,background .3s ease;
}
.faq-item[open] .faq-icon{transform:rotate(135deg);background:rgba(34,211,238,.14);}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2);}

/* ============ cta ============ */
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  border:1px solid rgba(34,211,238,.3);
  background:linear-gradient(140deg,rgba(34,211,238,.12),rgba(11,18,32,.82) 52%,rgba(255,122,26,.08));
  box-shadow:var(--sh-card);
  padding:44px 40px;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:40px;
  align-items:center;
}
.cta-panel h2{
  font-size:clamp(22px,3vw,32px);
  font-weight:800;letter-spacing:-.02em;line-height:1.26;
  margin:14px 0 12px;
}
.cta-panel p{color:var(--c-ink-2);font-size:15px;}
.form-card{
  background:rgba(6,11,20,.62);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:24px;
  backdrop-filter:blur(10px);
}
.field{margin-bottom:16px;}
.field label{
  display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:7px;font-weight:600;
}
.field input,.field select{
  width:100%;min-height:46px;
  padding:0 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  color:var(--c-ink);
  font-size:14.5px;font-family:inherit;
  outline:none;
  transition:border-color .2s,box-shadow .2s,background .2s;
  -webkit-appearance:none;
  appearance:none;
}
.field select{background-image:linear-gradient(45deg,transparent 50%,var(--c-ink-3) 50%),linear-gradient(135deg,var(--c-ink-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field input::placeholder{color:var(--c-ink-3);}
.field input:focus,.field select:focus{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(34,211,238,.16);
  background:rgba(34,211,238,.05);
}
.field-note{font-size:12px;color:var(--c-ink-3);margin-top:6px;}
.field-error{font-size:12px;color:var(--c-danger);margin-top:6px;display:none;}
.form-card .btn-glow{margin-top:4px;}

/* ============ footer ============ */
.site-footer{
  position:relative;
  margin-top:20px;
  background:linear-gradient(180deg,rgba(11,18,32,.9),rgba(6,11,20,.98));
  z-index:2;
  padding-bottom:96px;
}
.site-footer::before{
  content:'';
  display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.65),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding:52px 0 36px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-badge{width:36px;height:36px;flex:0 0 36px;font-size:17px;border-radius:10px;}
.footer-brand strong{font-size:16px;font-weight:800;}
.footer-desc{font-size:13.5px;color:var(--c-ink-3);line-height:1.8;max-width:320px;}
.footer-title{font-size:14px;font-weight:800;color:var(--c-ink);margin-bottom:16px;letter-spacing:.01em;}
.footer-links{display:grid;gap:11px;}
.footer-links a{font-size:13.5px;color:var(--c-ink-2);}
.footer-links a:hover{color:var(--c-primary);}
.footer-links a:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.footer-contact{display:grid;gap:12px;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--c-ink-2);}
.footer-contact i{color:var(--c-primary);margin-top:4px;font-size:13px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:20px 0 0;
  border-top:1px solid var(--c-line);
  font-size:12.5px;color:var(--c-ink-3);
}

/* ============ fixed bar ============ */
.fixed-cta{
  position:fixed;left:0;right:0;bottom:0;
  z-index:50;
  min-height:72px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:0 max(24px,calc((100vw - var(--w-container)) / 2 + 24px));
  background:rgba(6,11,20,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid rgba(34,211,238,.35);
}
.fixed-cta .fc-text{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:var(--c-ink-2);
}
.fixed-cta .fc-text i{color:var(--c-primary);}

/* ============ responsive ============ */
@media (max-width:1024px){
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:fixed;top:0;right:0;
    height:100vh;width:min(330px,86vw);
    flex-direction:column;align-items:stretch;gap:6px;
    padding:92px 20px 28px;
    background:rgba(6,11,20,.97);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--c-line);
    transform:translateX(100%);
    transition:transform .32s ease;
    z-index:58;
    overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-link{padding:15px 16px;font-size:15.5px;border-radius:var(--r-md);}
  .nav-link::after{display:none;}
  .nav-link.active{background:rgba(34,211,238,.12);color:var(--c-primary);}
  .asym-grid{grid-template-columns:1fr;}
  .cta-panel{grid-template-columns:1fr;padding:34px 26px;}
}
@media (max-width:900px){
  .timeline::before{left:19px;transform:none;}
  .tl-item{width:100%;margin-left:0 !important;padding-left:60px;padding-bottom:26px;}
  .tl-item .tl-dot{left:0 !important;right:auto;}
  .split{grid-template-columns:1fr;gap:26px;}
  .split-reverse .split-media{order:0;}
  .split-reverse .split-body{order:0;}
  .split + .split{margin-top:46px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:42px 0 30px;}
  .section{padding:52px 0;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .brand-text em{display:none;}
  .brand-text strong{font-size:15px;}
  .page-hero{min-height:260px;padding:38px 0 34px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{flex:1 1 100%;}
  .stat-item{padding:18px 16px;}
  .feature-card{padding:20px;}
  .feature-main .fm-body{padding:20px;}
  .cta-panel{padding:26px 18px;gap:26px;}
  .form-card{padding:18px;}
  .faq-item summary{padding:14px 16px;font-size:14.5px;}
  .faq-body{padding:0 16px 18px;}
  .fixed-cta{min-height:64px;padding:0 16px;}
  .fixed-cta .fc-text{display:none;}
  .fixed-cta .btn-glow{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}