/* roulang page: index */
:root{
  --bg:#06090F;
  --panel:#0C121C;
  --panel-3:#121A26;
  --line:rgba(255,255,255,.09);
  --primary:#26E0FF;
  --primary-2:#12B6D6;
  --amber:#FFB43D;
  --mint:#38F8B0;
  --text:#E9F1F8;
  --muted:#9AA9BC;
  --weak:#6B7B90;
  --radius:18px;
  --radius-panel:22px;
  --radius-btn:12px;
  --blur:16px;
  --glass-shadow: inset 0 1px 0 rgba(255,255,255,.07), 0 22px 48px -26px rgba(0,0,0,.9);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:-apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size:16px; line-height:1.75; color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(70% 55% at 50% -8%, rgba(38,224,255,.10), transparent 70%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:100% 100%, 48px 48px, 48px 48px;
  background-attachment:fixed, fixed, fixed;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,p{ margin:0; }
:focus-visible{ outline:2px solid var(--primary); outline-offset:2px; border-radius:6px; }

::-webkit-scrollbar{ width:8px; height:8px; }
::-webkit-scrollbar-track{ background:transparent; }
::-webkit-scrollbar-thumb{ background:#1B2836; border-radius:8px; }
::-webkit-scrollbar-thumb:hover{ background:rgba(38,224,255,.4); }

.container{ width:100%; max-width:1240px; margin:0 auto; padding:0 20px; }
@media (min-width:768px){ .container{ padding:0 32px; } }

.section{ padding:72px 0; position:relative; }
@media (max-width:767px){ .section{ padding:48px 0; } }

.section-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:20px; margin-bottom:28px; flex-wrap:wrap; }
.section-title{ font-size:clamp(22px,2.6vw,32px); font-weight:700; letter-spacing:-.01em; line-height:1.3; }
.section-title .accent{ color:var(--primary); }
.section-sub{ margin-top:10px; font-size:14px; color:var(--muted); max-width:640px; }
.section-more{ font-size:14px; color:var(--primary); display:inline-flex; align-items:center; gap:6px; min-height:44px; transition:gap .2s ease, opacity .2s ease; }
.section-more:hover{ gap:10px; opacity:.85; }

.glass{
  background:rgba(255,255,255,.055);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);
  box-shadow:var(--glass-shadow);
}

/* 按钮 */
.btn-primary{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  min-height:48px; padding:0 24px; border-radius:var(--radius-btn);
  font-size:15px; font-weight:600; color:#03181F;
  background:linear-gradient(180deg,#5CE9FF,#12B6D6);
  border:1px solid rgba(255,255,255,.35);
  box-shadow:0 12px 30px -10px rgba(38,224,255,.55);
  transition:filter .22s ease, transform .22s ease, box-shadow .22s ease, letter-spacing .22s ease;
}
.btn-primary:hover{ filter:brightness(1.08); transform:translateY(-2px); box-shadow:0 16px 40px -8px rgba(38,224,255,.72); letter-spacing:.01em; }
.btn-primary:active{ transform:translateY(0); box-shadow:inset 0 2px 6px rgba(0,0,0,.35); }
.btn-primary[disabled],.btn-primary.is-disabled{ opacity:.45; cursor:not-allowed; }
.btn-ghost{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  min-height:48px; padding:0 24px; border-radius:var(--radius-btn);
  font-size:15px; font-weight:600; color:var(--text);
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.16);
  transition:background .22s ease, border-color .22s ease, transform .22s ease;
}
.btn-ghost:hover{ background:rgba(38,224,255,.08); border-color:rgba(38,224,255,.6); transform:translateY(-2px); }
.btn-ghost:active{ transform:translateY(0); }
.btn-sm{ min-height:40px; padding:0 18px; font-size:14px; }

/* 徽章与标签 */
.chip{
  display:inline-flex; align-items:center; gap:6px; height:24px; padding:0 10px;
  border-radius:999px; font-size:12px; letter-spacing:.02em;
  border:1px solid rgba(38,224,255,.45); color:var(--primary); background:rgba(38,224,255,.08);
  white-space:nowrap;
}
.chip-amber{ border-color:rgba(255,180,61,.5); color:var(--amber); background:rgba(255,180,61,.12); }
.chip-mint{ border-color:rgba(56,248,176,.45); color:var(--mint); background:rgba(56,248,176,.10); }
.chip-plain{ border-color:rgba(255,255,255,.16); color:var(--muted); background:rgba(255,255,255,.04); }
.tag{
  display:inline-flex; align-items:center; height:26px; padding:0 10px; border-radius:999px;
  font-size:12px; color:var(--muted); background:rgba(255,255,255,.05); border:1px solid var(--line);
}
.badge{
  position:absolute; top:12px; left:12px; z-index:2;
  display:inline-flex; align-items:center; gap:6px; height:24px; padding:0 10px;
  border-radius:999px; font-size:12px; font-weight:600;
  background:rgba(6,9,15,.72); backdrop-filter:blur(10px);
  border:1px solid rgba(38,224,255,.45); color:var(--primary);
}
.badge-amber{ border-color:rgba(255,180,61,.55); color:var(--amber); }
.badge-mint{ border-color:rgba(56,248,176,.5); color:var(--mint); }
.badge-mint::before{ content:""; width:6px; height:6px; border-radius:50%; background:var(--mint); box-shadow:0 0 8px var(--mint); }

/* 公告条 */
.announce{ background:rgba(255,255,255,.04); border-bottom:1px solid var(--line); backdrop-filter:blur(12px); }
.announce-inner{ min-height:36px; display:flex; align-items:center; gap:10px; font-size:13px; color:var(--muted); }
.announce-dot{ width:6px; height:6px; border-radius:50%; background:var(--mint); box-shadow:0 0 8px var(--mint); flex:0 0 auto; }
.announce p{ flex:1; line-height:1.5; padding:8px 0; }
.announce-close{ width:32px; height:32px; border-radius:8px; color:var(--weak); font-size:18px; line-height:1; transition:color .2s ease, background .2s ease; }
.announce-close:hover{ color:var(--text); background:rgba(255,255,255,.06); }
.announce.is-hidden{ display:none; }

/* 导航 */
.site-header{ position:sticky; top:0; z-index:60; }
.navbar{
  background:rgba(6,9,15,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-inner{ position:relative; height:72px; display:flex; align-items:center; justify-content:space-between; gap:16px; }
.nav-left,.nav-right{ display:none; align-items:center; gap:26px; }
@media (min-width:1024px){ .nav-left,.nav-right{ display:flex; } }
.nav-right{ margin-left:auto; }
.nav-link{
  position:relative; display:inline-flex; align-items:center; min-height:44px;
  font-size:15px; color:var(--muted); transition:color .18s ease;
}
.nav-link::after{
  content:""; position:absolute; left:0; right:0; bottom:8px; height:2px; border-radius:2px;
  background:var(--primary); transform:scaleX(0); transform-origin:center; transition:transform .18s ease;
}
.nav-link:hover{ color:var(--text); }
.nav-link:hover::after,.nav-link.is-active::after{ transform:scaleX(1); }
.nav-link.is-active{ color:var(--text); }

.brand{
  display:flex; align-items:center; gap:10px;
  position:absolute; left:50%; transform:translateX(-50%);
}
.brand-mark{
  width:28px; height:28px; border-radius:9px; flex:0 0 auto;
  display:flex; align-items:center; justify-content:center;
  font-size:14px; font-weight:800; color:#03181F;
  background:linear-gradient(140deg,#7DEFFF,#12B6D6);
  box-shadow:0 0 18px rgba(38,224,255,.55), inset 0 1px 0 rgba(255,255,255,.5);
}
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-main{ font-size:17px; font-weight:700; letter-spacing:.01em; }
.brand-sub{ font-size:11px; color:var(--primary); letter-spacing:.18em; }
@media (max-width:1023px){
  .brand-main{ font-size:15px; }
  .brand-sub{ font-size:10px; letter-spacing:.14em; }
}

.nav-toggle{
  width:44px; height:44px; border-radius:12px; display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:5px; border:1px solid var(--line);
  background:rgba(255,255,255,.04);
}
.nav-toggle span{ display:block; width:20px; height:2px; border-radius:2px; background:var(--text); transition:transform .25s ease, opacity .25s ease; }
.nav-toggle.is-open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity:0; }
.nav-toggle.is-open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
@media (min-width:1024px){ .nav-toggle{ display:none; } }

.mobile-panel{
  display:none; position:fixed; left:0; right:0; top:72px; max-height:calc(100vh - 72px);
  overflow-y:auto; background:rgba(6,9,15,.96); backdrop-filter:blur(20px);
  border-bottom:1px solid var(--line); padding:8px 20px 24px;
}
.mobile-panel.is-open{ display:block; }
.mobile-panel a{
  display:flex; align-items:center; min-height:52px; font-size:15px; color:var(--muted);
  border-bottom:1px solid var(--line); transition:color .2s ease, padding-left .2s ease;
}
.mobile-panel a:hover,.mobile-panel a.is-active{ color:var(--primary); padding-left:6px; }
.mobile-panel .btn-primary{ width:100%; margin-top:18px; }
@media (min-width:1024px){ .mobile-panel{ display:none !important; } }

/* Hero */
.hero{ position:relative; padding:60px 0 72px; overflow:hidden; }
.hero::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(60% 60% at 18% 0%, rgba(38,224,255,.16), transparent 65%),
    linear-gradient(135deg, rgba(38,224,255,.20), transparent 55%);
  opacity:.85;
}
.hero-grid{ position:relative; display:grid; gap:40px; align-items:center; }
@media (min-width:1024px){ .hero-grid{ grid-template-columns:1.05fr .95fr; gap:48px; } }
.hero-eyebrow{ margin-bottom:18px; }
.hero-title{ font-size:clamp(30px,4.4vw,54px); line-height:1.12; font-weight:800; letter-spacing:-.02em; }
.hero-sub{ margin-top:18px; font-size:18px; line-height:1.7; color:var(--muted); max-width:560px; }
.hero-actions{ margin-top:30px; display:flex; flex-wrap:wrap; gap:12px; }
@media (max-width:639px){ .hero-actions{ flex-direction:column; } .hero-actions .btn-primary,.hero-actions .btn-ghost{ width:100%; } }
.hero-cta-main{ animation:breath 4s ease-in-out infinite; }

.trust-row{
  margin-top:38px; padding-top:26px; border-top:1px solid var(--line);
  display:grid; grid-template-columns:repeat(2,1fr); gap:20px;
}
@media (min-width:640px){ .trust-row{ grid-template-columns:repeat(4,1fr); } }
.trust-num{ font-size:24px; font-weight:800; color:var(--primary); font-variant-numeric:tabular-nums; line-height:1.2; }
.trust-label{ margin-top:4px; font-size:13px; color:var(--muted); }

.hero-card{ position:relative; border-radius:var(--radius-panel); overflow:hidden; }
.hero-card-media{ position:relative; height:260px; overflow:hidden; }
@media (max-width:520px){ .hero-card-media{ height:200px; } }
.hero-card-media img{ width:100%; height:100%; object-fit:cover; }
.hero-card-media::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(150deg, rgba(6,9,15,.55) 10%, rgba(38,224,255,.20) 100%);
}
.hero-card-body{ padding:22px 24px 24px; }
.hero-card-title{ font-size:20px; font-weight:700; }
.hero-card-desc{ margin-top:10px; font-size:14px; color:var(--muted); line-height:1.7; }
.hero-card-tags{ margin-top:16px; display:flex; flex-wrap:wrap; gap:8px; }
.hero-card-foot{
  margin-top:22px; padding-top:18px; border-top:1px solid var(--line);
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
}
.state-label{ display:block; font-size:12px; color:var(--weak); }
.state-value{ font-size:15px; font-weight:600; color:var(--mint); }

/* 入口卡片网格 */
.card-grid{ display:grid; gap:24px; grid-template-columns:1fr; }
@media (min-width:768px){ .card-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .card-grid{ grid-template-columns:repeat(6,1fr); } .card-feature,.card-item{ grid-column:span 2; } }
@media (min-width:1024px){ .card-feature{ min-height:340px; } .card-item{ min-height:260px; } }

.entry-card{
  position:relative; display:flex; flex-direction:column; overflow:hidden;
  border-radius:var(--radius); background:rgba(255,255,255,.04); border:1px solid var(--line);
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease, background .25s ease;
}
.entry-card:hover{ transform:translateY(-4px); border-color:rgba(38,224,255,.55); box-shadow:0 26px 56px -30px rgba(38,224,255,.35); background:rgba(255,255,255,.06); }
.entry-media{
  position:relative; overflow:hidden; height:150px;
  background:linear-gradient(100deg, rgba(255,255,255,.05) 30%, rgba(255,255,255,.10) 50%, rgba(255,255,255,.05) 70%);
}
.card-feature .entry-media{ height:190px; }
@media (max-width:1023px){ .entry-media{ height:180px; } .card-feature .entry-media{ height:200px; } }
.entry-media img{ width:100%; height:100%; object-fit:cover; transition:transform .45s ease; }
.entry-media::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(155deg, rgba(6,9,15,.28) 15%, rgba(38,224,255,.18) 100%);
}
.entry-card:hover .entry-media img{ transform:scale(1.04); }
.entry-body{ padding:18px 20px 20px; display:flex; flex-direction:column; flex:1; }
.entry-title{ font-size:17px; font-weight:600; line-height:1.5; }
.entry-desc{
  margin-top:8px; font-size:14px; color:var(--muted); line-height:1.7; flex:1;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.entry-link{ margin-top:14px; font-size:14px; color:var(--primary); transition:letter-spacing .2s ease; }
.entry-card:hover .entry-link{ letter-spacing:.02em; }

/* 评价轮播 */
.review-wrap{ position:relative; }
.review-track{
  display:flex; gap:20px; overflow-x:auto; scroll-snap-type:x mandatory;
  padding:6px 4px 22px; scrollbar-width:none;
}
.review-track::-webkit-scrollbar{ display:none; }
.review-card{ flex:0 0 320px; scroll-snap-align:start; border-radius:var(--radius); padding:20px 22px; }
@media (max-width:520px){ .review-card{ flex:0 0 84%; } }
.review-head{ display:flex; align-items:center; gap:12px; }
.avatar{
  width:40px; height:40px; border-radius:50%; flex:0 0 auto;
  display:flex; align-items:center; justify-content:center;
  font-size:15px; font-weight:700; color:#03181F;
  background:linear-gradient(140deg,#7DEFFF,#12B6D6);
  box-shadow:0 0 14px rgba(38,224,255,.4);
}
.review-name{ font-size:14px; font-weight:600; }
.stars{ font-size:13px; color:var(--amber); letter-spacing:2px; }
.review-text{
  margin-top:14px; font-size:15px; line-height:1.8; color:#C7D2E0;
  display:-webkit-box; -webkit-line-clamp:4; -webkit-box-orient:vertical; overflow:hidden;
}
.review-time{ margin-top:12px; font-size:13px; color:var(--weak); }
@media (min-width:768px){
  .review-wrap::before,.review-wrap::after{
    content:""; position:absolute; top:0; bottom:22px; width:56px; pointer-events:none; z-index:2;
  }
  .review-wrap::before{ left:0; background:linear-gradient(90deg,#06090F,rgba(6,9,15,0)); }
  .review-wrap::after{ right:0; background:linear-gradient(270deg,#06090F,rgba(6,9,15,0)); }
}
.dots{ display:flex; justify-content:center; gap:8px; margin-top:6px; }
.dot{ width:7px; height:7px; border-radius:50%; background:rgba(255,255,255,.18); }
.dot.is-active{ background:var(--primary); box-shadow:0 0 10px rgba(38,224,255,.8); }

/* 保障条 */
.assure-bar{ border-radius:20px; padding:6px 0; }
.assure-grid{ display:grid; grid-template-columns:1fr; }
@media (min-width:768px){ .assure-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .assure-grid{ grid-template-columns:repeat(4,1fr); } }
.assure-item{ position:relative; display:flex; gap:14px; padding:20px 22px; align-items:flex-start; }
@media (min-width:1024px){
  .assure-item + .assure-item::before{
    content:""; position:absolute; left:0; top:18px; bottom:18px; width:1px;
    background:linear-gradient(180deg, transparent, rgba(255,255,255,.14), transparent);
  }
}
.assure-icon{ flex:0 0 auto; width:24px; height:24px; color:var(--primary); }
.assure-label{ font-size:15px; font-weight:600; }
.assure-desc{ margin-top:4px; font-size:13px; color:var(--muted); line-height:1.65; }

/* 最新信息 */
.news-grid{ display:grid; gap:28px; grid-template-columns:1fr; }
@media (min-width:1024px){ .news-grid{ grid-template-columns:minmax(0,2fr) minmax(0,1fr); gap:32px; } }
.post-list{ display:grid; gap:14px; }
.post-row{
  border-radius:var(--radius); border:1px solid var(--line); background:rgba(255,255,255,.03);
  transition:border-color .22s ease, background .22s ease, transform .22s ease;
}
.post-row:hover{ border-color:rgba(38,224,255,.42); background:rgba(255,255,255,.055); transform:translateY(-2px); }
.post-link{ display:flex; gap:16px; padding:18px; align-items:flex-start; }
.post-thumb{
  flex:0 0 140px; width:140px; height:96px; border-radius:14px; overflow:hidden;
  background:rgba(255,255,255,.06); position:relative;
}
.post-thumb img{ width:100%; height:100%; object-fit:cover; }
.post-thumb::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(150deg, rgba(6,9,15,.25), rgba(38,224,255,.16));
}
.post-body{ min-width:0; flex:1; }
.post-title{
  margin-top:10px; font-size:17px; font-weight:600; line-height:1.5;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.post-desc{
  margin-top:8px; font-size:14px; color:var(--muted); line-height:1.7;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.post-meta{ margin-top:12px; display:flex; align-items:center; gap:12px; flex-wrap:wrap; font-size:13px; color:var(--weak); }
.post-more{ color:var(--primary); font-size:13px; }
@media (max-width:639px){
  .post-link{ flex-direction:column; }
  .post-thumb{ width:100%; flex:0 0 auto; height:150px; }
}

.side-panel{ border-radius:var(--radius); padding:20px; background:rgba(255,255,255,.035); border:1px solid var(--line); }
.filter-row{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:16px; }
.filter-pill{
  height:28px; padding:0 12px; border-radius:999px; font-size:12px; color:var(--muted);
  border:1px solid var(--line); background:rgba(255,255,255,.04); display:inline-flex; align-items:center;
  transition:color .2s ease, border-color .2s ease, background .2s ease;
}
.filter-pill:hover,.filter-pill.is-active{ color:var(--primary); border-color:rgba(38,224,255,.5); background:rgba(38,224,255,.10); }
.mini-list li + li{ border-top:1px solid var(--line); }
.mini-link{ display:block; padding:12px 0; transition:padding-left .2s ease; }
.mini-link:hover{ padding-left:6px; }
.mini-title{
  font-size:14px; line-height:1.6; color:var(--text);
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.mini-time{ margin-top:6px; font-size:12px; color:var(--weak); }

.empty-state{ text-align:center; padding:46px 20px; border-radius:var(--radius); border:1px dashed rgba(255,255,255,.14); background:rgba(255,255,255,.02); }
.empty-state svg{ width:48px; height:48px; margin:0 auto 14px; color:var(--weak); }
.empty-state p{ font-size:15px; color:var(--muted); margin-bottom:16px; }

/* FAQ */
.faq-list{ max-width:860px; margin:0 auto; display:grid; gap:10px; }
.faq-item{ position:relative; overflow:hidden; border-radius:14px; transition:background .25s ease; }
.faq-item.is-open{ background:rgba(255,255,255,.085); }
.faq-item.is-open::before{
  content:""; position:absolute; left:0; top:14px; bottom:14px; width:3px;
  border-radius:3px; background:var(--primary);
}
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:18px 20px; min-height:56px; text-align:left; font-size:16px; font-weight:600; line-height:1.6;
}
.faq-arrow{ flex:0 0 auto; width:18px; height:18px; color:var(--primary); transition:transform .28s ease; }
.faq-item.is-open .faq-arrow{ transform:rotate(90deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-a-inner{ padding:0 20px 20px; font-size:15px; line-height:1.85; color:#C7D2E0; border-top:1px solid var(--line); padding-top:16px; }

/* CTA */
.cta-panel{
  position:relative; overflow:hidden; border-radius:var(--radius-panel); padding:40px 28px;
  display:grid; gap:32px; align-items:center; background:var(--panel);
}
@media (min-width:1024px){ .cta-panel{ grid-template-columns:1.15fr .85fr; padding:48px; min-height:280px; } }
.cta-bg{ position:absolute; inset:0; }
.cta-bg img{ width:100%; height:100%; object-fit:cover; opacity:.42; }
.cta-bg::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(140deg, rgba(6,9,15,.92) 20%, rgba(6,9,15,.72) 55%, rgba(38,224,255,.20) 100%);
}
.cta-content{ position:relative; z-index:2; }
.cta-title{ font-size:clamp(22px,2.6vw,30px); font-weight:700; line-height:1.35; }
.cta-desc{ margin-top:12px; font-size:15px; color:var(--muted); max-width:520px; }
.cta-actions{ position:relative; z-index:2; display:flex; align-items:center; gap:24px; flex-wrap:wrap; }
.qr-box{
  width:120px; height:120px; border-radius:16px; flex:0 0 auto;
  background:rgba(255,255,255,.07); border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center; position:relative; overflow:hidden;
}
.qr-lines{
  width:80px; height:80px; border-radius:8px;
  background-image:linear-gradient(rgba(233,241,248,.55) 2px, transparent 2px), linear-gradient(90deg, rgba(233,241,248,.55) 2px, transparent 2px);
  background-size:16px 16px; opacity:.55;
}
.qr-caption{ position:absolute; bottom:8px; font-size:11px; color:var(--weak); }
.qr-hint{ font-size:13px; color:var(--muted); max-width:140px; line-height:1.7; }

/* 页脚 */
.site-footer{
  margin-top:20px; border-top:1px solid rgba(255,255,255,.08); position:relative;
  background:linear-gradient(180deg, rgba(255,255,255,.02), transparent 60%);
}
.site-footer::before{
  content:""; position:absolute; top:-1px; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, rgba(38,224,255,.55), transparent);
}
.footer-grid{ display:grid; gap:32px; padding:56px 0 36px; grid-template-columns:1fr; }
@media (min-width:768px){ .footer-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .footer-grid{ grid-template-columns:repeat(4,1fr); } }
.footer-title{ font-size:14px; font-weight:600; color:var(--primary); letter-spacing:.02em; margin-bottom:16px; }
.footer-brand-text{ margin-top:14px; font-size:14px; color:var(--muted); line-height:1.8; max-width:300px; }
.footer-list li + li{ margin-top:10px; }
.footer-link{ font-size:14px; color:var(--muted); display:inline-block; transition:color .2s ease, transform .2s ease; }
.footer-link:hover{ color:#fff; transform:translateX(2px); }
.footer-note{ font-size:13px; color:var(--weak); line-height:1.8; }
.footer-bottom{
  border-top:1px solid var(--line); padding:20px 0 28px;
  display:flex; flex-wrap:wrap; gap:10px 24px; align-items:center; justify-content:space-between;
  font-size:13px; color:var(--weak);
}
.brand-footer{ position:static; transform:none; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
}

/* roulang page: article */
:root{
  --bg:#06090F;
  --panel:#0C121C;
  --panel-2:#121A26;
  --primary:#26E0FF;
  --amber:#FFB43D;
  --mint:#38F8B0;
  --text:#E9F1F8;
  --muted:#9AA9BC;
  --dim:#6B7B90;
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.06);
  --glass:rgba(255,255,255,.055);
  --radius:18px;
  --radius-panel:22px;
  --btn:12px;
  --blur:16px;
  --shadow-card:0 22px 48px -26px rgba(0,0,0,.9);
  --shadow-glow:0 12px 30px -10px rgba(38,224,255,.55);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
    radial-gradient(70% 42% at 50% -6%, rgba(38,224,255,.10), transparent 72%);
  background-size:48px 48px, 48px 48px, 100% 100%;
  background-attachment:fixed, fixed, fixed;
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease, opacity .18s ease;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(38,224,255,.28);}
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:#1B2836;border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(38,224,255,.4);}

/* ============ 容器与区块 ============ */
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){ .container{padding-left:32px;padding-right:32px;} }
.section{padding:72px 0;}
.section-tight{padding:48px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.section-title{font-size:clamp(22px,2.6vw,30px);line-height:1.28;font-weight:700;}
.section-title .accent{color:var(--primary);}
.section-sub{font-size:15px;color:var(--muted);margin-top:8px;}
.rule-gradient{height:1px;background:linear-gradient(90deg, rgba(38,224,255,.55), rgba(38,224,255,0) 72%);}

/* ============ 按钮 ============ */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--btn);
  background:linear-gradient(180deg,#3FE6FF 0%,#0FB6D6 100%);
  color:#04141A;font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid rgba(255,255,255,.35);
  box-shadow:var(--shadow-glow);
  cursor:pointer;white-space:nowrap;
  transition:filter .2s ease, transform .2s ease, box-shadow .2s ease, letter-spacing .2s ease;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 18px 42px -12px rgba(38,224,255,.75);letter-spacing:.02em;color:#04141A;}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.35);}
.btn-primary[disabled],.btn-primary.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;border-radius:var(--btn);
  background:transparent;border:1px solid rgba(255,255,255,.18);
  color:var(--text);font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s ease, border-color .2s ease, transform .2s ease, color .2s ease;
}
.btn-ghost:hover{background:rgba(38,224,255,.08);border-color:rgba(38,224,255,.6);transform:translateY(-2px);color:#fff;}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{min-height:38px;padding:8px 16px;font-size:14px;}
.link-arrow{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.link-arrow:hover{gap:10px;}

/* ============ 徽章 / 标签 ============ */
.chip{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;letter-spacing:.04em;line-height:1;
  border:1px solid rgba(38,224,255,.5);color:var(--primary);background:rgba(38,224,255,.07);
  white-space:nowrap;
}
.chip-amber{border-color:rgba(255,180,61,.55);color:var(--amber);background:rgba(255,180,61,.1);}
.chip-mint{border-color:rgba(56,248,176,.45);color:var(--mint);background:rgba(56,248,176,.08);}
.chip-mint::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 8px rgba(56,248,176,.9);}
.chip-plain{border-color:rgba(255,255,255,.14);color:var(--muted);background:rgba(255,255,255,.04);}

/* ============ 顶部公告 ============ */
.announce{
  background:rgba(38,224,255,.06);
  border-bottom:1px solid var(--line-soft);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.announce-inner{display:flex;align-items:center;gap:10px;min-height:36px;padding-top:6px;padding-bottom:6px;font-size:12.5px;color:var(--muted);}
.announce-inner p{margin:0;line-height:1.5;}
.announce-dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px rgba(56,248,176,.85);flex:0 0 auto;}
.announce-close{
  margin-left:auto;width:26px;height:26px;flex:0 0 auto;border-radius:8px;
  background:transparent;border:1px solid transparent;color:var(--dim);font-size:16px;line-height:1;
  cursor:pointer;transition:color .2s ease,border-color .2s ease;
}
.announce-close:hover{color:var(--text);border-color:var(--line);}
.announce.is-hidden{display:none;}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:60;}
.navbar{
  position:relative;
  background:rgba(6,9,15,.74);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-inner{position:relative;display:flex;align-items:center;justify-content:space-between;height:72px;}
.nav-left,.nav-right{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0;flex:1;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;
  font-size:15px;color:var(--muted);border-radius:10px;transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left center;transition:transform .18s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{transform:scaleX(1);}
.brand{
  position:absolute;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:12px;
}
.brand:hover .brand-main{color:var(--primary);}
.brand-mark{
  width:28px;height:28px;border-radius:9px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#04141A;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,.9) 0 1.5px, transparent 2px),
    radial-gradient(circle at 70% 62%, rgba(255,255,255,.75) 0 1.2px, transparent 1.8px),
    linear-gradient(160deg,#3FE6FF,#0FB6D6);
  box-shadow:0 0 0 1px rgba(38,224,255,.5),0 8px 20px -10px rgba(38,224,255,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.05;}
.brand-main{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;transition:color .2s ease;}
.brand-sub{font-size:11px;color:var(--primary);letter-spacing:.18em;margin-top:2px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;background:transparent;
  border:1px solid var(--line);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{
  display:none;position:fixed;left:0;right:0;top:0;z-index:55;
  padding:96px 20px 24px;
  background:rgba(6,9,15,.96);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  max-height:100vh;overflow-y:auto;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;height:52px;padding:0 4px;
  font-size:16px;color:var(--muted);border-bottom:1px solid var(--line-soft);
}
.mobile-panel a.is-active{color:var(--primary);}
.mobile-panel a.btn-primary{height:48px;margin-top:18px;border-bottom:none;color:#04141A;justify-content:center;}
body.nav-locked{overflow:hidden;}
@media (max-width:1023px){
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-inner{height:60px;}
  .brand{position:static;transform:none;margin:0 auto;}
  .brand-main{font-size:16px;}
  .brand-sub{font-size:10px;letter-spacing:.14em;}
  .mobile-panel{padding-top:78px;}
}

/* ============ 面包屑 ============ */
.breadcrumb{padding:26px 0 0;}
.breadcrumb ol{display:flex;align-items:center;flex-wrap:wrap;gap:8px;list-style:none;padding:0;font-size:13px;color:var(--dim);}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
.breadcrumb li + li::before{content:"/";color:var(--primary);opacity:.65;}
.breadcrumb a{color:var(--dim);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .crumb-current{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);}
@media (max-width:640px){ .breadcrumb .crumb-current{max-width:150px;} }

/* ============ 文章头部 ============ */
.article-head{padding:20px 0 8px;max-width:900px;}
.article-head h1{
  font-size:clamp(26px,3.6vw,38px);
  line-height:1.25;
  margin-top:16px;
  color:var(--text);
  letter-spacing:-0.015em;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px 18px;
  margin-top:18px;font-size:13.5px;color:var(--muted);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px;}
.article-meta .meta-item svg{width:15px;height:15px;stroke:var(--primary);fill:none;stroke-width:1.6;}
.share-group{display:flex;align-items:center;gap:8px;margin-left:auto;}
.share-btn{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted);cursor:pointer;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.share-btn:hover{color:var(--primary);border-color:rgba(38,224,255,.5);background:rgba(38,224,255,.08);}
.share-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.7;}
.article-divider{margin:22px 0 0;}

/* ============ 文章布局 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding:36px 0 0;}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:48px;}
}
.article-main{min-width:0;max-width:800px;width:100%;}
.article-body{font-size:17px;line-height:1.9;color:#C7D2E0;}
.article-body > * + *{margin-top:1.15em;}
.article-body p{margin:0;}
.article-body h2{
  position:relative;font-size:22px;line-height:1.45;color:var(--text);
  margin-top:36px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.42em;width:4px;height:18px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),#0FB6D6);
}
.article-body h3{font-size:19px;line-height:1.5;color:var(--text);margin-top:28px;}
.article-body h4{font-size:17px;color:var(--text);margin-top:22px;}
.article-body ul,.article-body ol{padding-left:22px;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul > li{position:relative;padding-left:20px;margin-top:8px;}
.article-body ul > li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:1px;
  background:var(--primary);box-shadow:0 0 8px rgba(38,224,255,.6);
}
.article-body ol{padding-left:22px;}
.article-body ol > li{margin-top:8px;padding-left:4px;}
.article-body ol > li::marker{color:var(--primary);font-weight:700;}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(38,224,255,.35);}
.article-body a:hover{border-bottom-color:var(--primary);}
.article-body strong{color:#fff;font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:18px 20px;border-left:3px solid var(--amber);
  background:rgba(255,255,255,.05);border-radius:0 14px 14px 0;color:var(--muted);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.article-body blockquote p{margin:0;}
.article-body img{border-radius:14px;width:100%;height:auto;margin:22px 0 8px;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--dim);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;
  border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.03);margin:22px 0;}
.article-body thead th{background:rgba(38,224,255,.07);color:var(--text);font-weight:600;text-align:left;}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line-soft);white-space:nowrap;}
.article-body pre{
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:14px;
  padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;color:var(--aero-400,#6BEBFF);}
.article-body pre code{color:#C7D2E0;}
.article-body hr{border:none;height:1px;background:var(--line);margin:32px 0;}

/* 目录 */
.toc-block{position:sticky;top:96px;align-self:start;}
.toc-card{
  border-radius:var(--radius);padding:18px;
  background:rgba(255,255,255,.045);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.toc-title{font-size:13px;letter-spacing:.08em;color:var(--primary);font-weight:600;margin-bottom:12px;}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow-y:auto;}
.toc-link{
  display:block;font-size:14px;color:var(--muted);line-height:1.5;padding:6px 8px;border-radius:8px;
  border-left:2px solid transparent;transition:color .18s ease,border-color .18s ease,background .18s ease;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.toc-link.is-sub{padding-left:20px;font-size:13.5px;color:var(--dim);}
.toc-link.is-current{color:var(--primary);border-left-color:var(--primary);background:rgba(38,224,255,.07);}
.toc-mobile{display:block;margin-top:20px;}
@media (min-width:1024px){
  .toc-mobile{display:none;}
}
@media (max-width:1023px){
  .toc-block{display:none;}
  .toc-mobile{
    border-radius:14px;border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  }
  .toc-mobile summary{
    list-style:none;cursor:pointer;padding:14px 18px;font-size:14px;font-weight:600;color:var(--text);
    display:flex;align-items:center;justify-content:space-between;
  }
  .toc-mobile summary::-webkit-details-marker{display:none;}
  .toc-mobile summary::after{content:"▾";color:var(--primary);transition:transform .2s ease;}
  .toc-mobile[open] summary::after{transform:rotate(180deg);}
  .toc-mobile .toc-list{padding:0 14px 14px;max-height:none;}
}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  text-align:center;padding:64px 24px;border-radius:var(--radius-panel);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.empty-state svg{width:48px;height:48px;stroke:var(--primary);fill:none;stroke-width:1.4;opacity:.85;}
.empty-state p{font-size:16px;color:var(--muted);}

/* ============ 相关阅读 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
@media (max-width:1023px){ .related-grid{grid-template-columns:1fr;} }
.related-card{
  display:flex;gap:16px;padding:16px;border-radius:var(--radius);
  background:rgba(255,255,255,.045);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  align-items:flex-start;
}
.related-card:hover{transform:translateY(-4px);border-color:rgba(38,224,255,.5);box-shadow:0 26px 56px -30px rgba(38,224,255,.35);}
.related-thumb{width:96px;height:72px;flex:0 0 auto;border-radius:12px;overflow:hidden;position:relative;background:var(--panel-2);}
.related-thumb img{width:100%;height:100%;object-fit:cover;}
.related-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(6,9,15,.55),rgba(38,224,255,.16));}
.related-title{font-size:16px;font-weight:600;color:var(--text);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card:hover .related-title{color:var(--primary);}
.related-meta{margin-top:8px;font-size:13px;color:var(--dim);display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 返回条 ============ */
.back-bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 24px;border-radius:var(--radius-panel);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}

/* ============ CTA 面板 ============ */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--radius-panel);
  min-height:240px;display:flex;align-items:center;
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(12,18,28,.94),rgba(12,18,28,.78));
  box-shadow:var(--shadow-card);
}
.cta-panel .cta-bg{position:absolute;inset:0;z-index:0;}
.cta-panel .cta-bg img{width:100%;height:100%;object-fit:cover;opacity:.22;}
.cta-panel .cta-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(6,9,15,.92) 12%,rgba(38,224,255,.14) 100%);}
.cta-inner{position:relative;z-index:1;width:100%;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:40px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);line-height:1.3;}
.cta-inner p{color:var(--muted);margin-top:10px;font-size:15px;max-width:520px;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.qr-box{
  width:96px;height:96px;border-radius:14px;flex:0 0 auto;
  background:rgba(255,255,255,.05);border:1px dashed rgba(255,255,255,.2);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--dim);text-align:center;padding:8px;
}

/* ============ 页脚 ============ */
.site-footer{margin-top:72px;border-top:1px solid transparent;background:linear-gradient(180deg,rgba(12,18,28,.6),rgba(6,9,15,.95));position:relative;padding-top:56px;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(38,224,255,0),rgba(38,224,255,.6),rgba(38,224,255,0));}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:36px;}
@media (max-width:1023px){ .footer-grid{grid-template-columns:1fr 1fr;gap:28px;} }
@media (max-width:639px){ .footer-grid{grid-template-columns:1fr;} }
.brand-footer{position:static;transform:none;padding-left:0;}
.footer-brand-text{margin-top:14px;font-size:14px;color:var(--muted);line-height:1.8;max-width:320px;}
.footer-title{font-size:14px;font-weight:600;color:var(--primary);letter-spacing:.06em;margin-bottom:14px;}
.footer-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-link{font-size:14px;color:var(--muted);display:inline-block;transition:color .18s ease,transform .18s ease;}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-note{font-size:13.5px;color:var(--dim);line-height:1.85;max-width:360px;}
.footer-bottom{
  margin-top:44px;padding:20px 0 28px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--dim);
}
.footer-bottom p{margin:0;}
@media (max-width:640px){ .footer-bottom{flex-direction:column;align-items:flex-start;} }

/* ============ 动效 ============ */
@keyframes breath{0%,100%{box-shadow:0 12px 30px -10px rgba(38,224,255,.5);}50%{box-shadow:0 18px 46px -8px rgba(38,224,255,.85);}}
.breath{animation:breath 4s ease-in-out infinite;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
    --bg:#06090F;
    --panel:#0C121C;
    --panel-2:#121A26;
    --primary:#26E0FF;
    --primary-deep:#12B9DD;
    --amber:#FFB43D;
    --mint:#38F8B0;
    --text:#E9F1F8;
    --muted:#9AA9BC;
    --dim:#6B7B90;
    --body-text:#C7D2E0;
    --line:rgba(255,255,255,.09);
    --line-soft:rgba(255,255,255,.07);
    --radius-card:18px;
    --radius-panel:22px;
    --radius-btn:12px;
    --blur:blur(16px) saturate(140%);
  }

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

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

  body{
    margin:0;
    min-height:100%;
    color:var(--text);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    background-color:var(--bg);
    background-image:
      radial-gradient(900px 620px at 50% -12%, rgba(38,224,255,.10), transparent 70%),
      linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
    background-size:auto, 48px 48px, 48px 48px;
    background-attachment:fixed, fixed, fixed;
    font-variant-numeric:tabular-nums;
    overflow-x:hidden;
  }

  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0 0 1.1em;}
  h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}

  ::-webkit-scrollbar{width:8px;height:8px;}
  ::-webkit-scrollbar-track{background:transparent;}
  ::-webkit-scrollbar-thumb{background:#1B2836;border-radius:999px;}
  ::-webkit-scrollbar-thumb:hover{background:rgba(38,224,255,.4);}

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

  .container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}

  .section{padding:72px 0;}
  @media (max-width:767px){.section{padding:48px 0;}}

  /* ============ 公告条 ============ */
  .announce{
    background:rgba(38,224,255,.07);
    border-bottom:1px solid rgba(38,224,255,.14);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
  }
  .announce-inner{
    display:flex;align-items:center;gap:10px;
    min-height:36px;font-size:13px;color:#9FE9FF;
  }
  .announce-dot{
    width:7px;height:7px;border-radius:999px;flex:0 0 auto;
    background:var(--mint);box-shadow:0 0 10px rgba(56,248,176,.9);
  }
  .announce p{margin:0;flex:1 1 auto;line-height:1.5;}
  .announce-close{
    width:26px;height:26px;line-height:1;border-radius:8px;font-size:17px;
    color:var(--dim);transition:.2s;flex:0 0 auto;
  }
  .announce-close:hover{color:var(--primary);background:rgba(38,224,255,.10);}

  /* ============ 导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
  }
  .navbar{
    background:rgba(6,9,15,.72);
    backdrop-filter:blur(18px) saturate(150%);
    -webkit-backdrop-filter:blur(18px) saturate(150%);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-inner{
    position:relative;
    display:flex;align-items:center;justify-content:space-between;
    height:72px;gap:16px;
  }
  .nav-left,.nav-right{
    display:flex;align-items:center;gap:6px;
    min-width:0;
  }
  .nav-right{gap:10px;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;
    height:44px;padding:0 10px;
    font-size:15px;color:var(--muted);
    transition:color .2s ease;
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:10px;right:10px;bottom:8px;height:2px;
    background:var(--primary);border-radius:2px;
    transform:scaleX(0);transform-origin:left center;
    transition:transform .18s ease;
    box-shadow:0 0 12px rgba(38,224,255,.7);
  }
  .nav-link:hover{color:var(--primary);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--text);font-weight:600;}
  .nav-link.is-active::after{transform:scaleX(1);}

  .brand{
    position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
    display:inline-flex;align-items:center;gap:10px;
    padding:6px 8px;border-radius:12px;
    transition:background .2s ease;
  }
  .brand:hover{background:rgba(38,224,255,.06);}
  .brand-mark{
    width:28px;height:28px;border-radius:9px;flex:0 0 auto;
    display:grid;place-items:center;
    font-size:14px;font-weight:700;color:#04141B;
    background:linear-gradient(150deg,#5EEAFF,#12B9DD);
    box-shadow:0 0 18px rgba(38,224,255,.55), inset 0 1px 0 rgba(255,255,255,.45);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-main{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;white-space:nowrap;}
  .brand-sub{font-size:11px;color:var(--primary);letter-spacing:.18em;white-space:nowrap;}

  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;color:#04141B;
    background:linear-gradient(180deg,#5EEAFF 0%,#12B9DD 100%);
    border:1px solid rgba(190,245,255,.65);
    box-shadow:0 12px 30px -10px rgba(38,224,255,.55);
    transition:transform .2s ease, filter .2s ease, box-shadow .2s ease, letter-spacing .2s ease;
    white-space:nowrap;
  }
  .btn-primary:hover{
    filter:brightness(1.08);
    transform:translateY(-2px);
    box-shadow:0 18px 40px -12px rgba(38,224,255,.75);
    letter-spacing:.01em;
  }
  .btn-primary:active{
    transform:translateY(0);
    box-shadow:inset 0 2px 6px rgba(0,0,0,.35);
  }
  .btn-primary[disabled],.btn-primary.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
  .btn-sm{min-height:40px;padding:0 16px;font-size:14px;}

  .btn-ghost{
    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;color:var(--text);
    background:transparent;border:1px solid rgba(255,255,255,.18);
    transition:background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    white-space:nowrap;
  }
  .btn-ghost:hover{
    background:rgba(38,224,255,.08);
    border-color:rgba(38,224,255,.6);
    transform:translateY(-2px);
    box-shadow:0 14px 32px -18px rgba(38,224,255,.55);
  }
  .btn-ghost:active{transform:translateY(0);}

  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:10px;
    align-items:center;justify-content:center;flex-direction:column;gap:5px;
    border:1px solid var(--line);
  }
  .nav-toggle span{
    display:block;width:20px;height:2px;border-radius:2px;background:var(--text);
    transition:transform .22s ease, opacity .22s ease;
  }
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle.is-open span:nth-child(2){opacity:0;}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  .mobile-panel{
    display:none;
    background:rgba(8,12,19,.96);
    backdrop-filter:blur(18px) saturate(150%);
    -webkit-backdrop-filter:blur(18px) saturate(150%);
    border-bottom:1px solid var(--line);
    padding:8px 20px 20px;
  }
  .mobile-panel.is-open{display:block;}
  .mobile-panel a{
    display:flex;align-items:center;
    min-height:52px;padding:0 4px;
    font-size:15px;color:var(--muted);
    border-bottom:1px solid rgba(255,255,255,.06);
  }
  .mobile-panel a:hover,.mobile-panel a.is-active{color:var(--primary);}
  .mobile-panel a.btn-primary{
    color:#04141B;justify-content:center;margin-top:16px;
    border-bottom:0;border-radius:var(--radius-btn);
  }
  body.is-locked{overflow:hidden;}

  @media (max-width:1023px){
    .nav-left li:nth-child(3),.nav-right li:nth-child(1),.nav-right li:nth-child(2){display:none;}
  }
  @media (max-width:767px){
    .nav-inner{height:60px;}
    .nav-left,.nav-right{display:none;}
    .nav-toggle{display:flex;}
    .brand{position:static;transform:none;}
    .brand-text{flex-direction:row;align-items:baseline;gap:8px;}
    .brand-main{font-size:16px;}
    .brand-sub{font-size:11px;letter-spacing:.12em;}
  }

  /* ============ 玻璃与通用组件 ============ */
  .glass-card{
    background:rgba(255,255,255,.055);
    backdrop-filter:var(--blur);
    -webkit-backdrop-filter:var(--blur);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.07), 0 22px 48px -26px rgba(0,0,0,.9);
  }
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;letter-spacing:.08em;
    border:1px solid rgba(38,224,255,.45);
    color:#8FE9FF;background:rgba(38,224,255,.08);
    white-space:nowrap;
  }
  .chip-amber{
    border-color:rgba(255,180,61,.45);
    color:var(--amber);background:rgba(255,180,61,.13);
  }
  .chip-mint{
    border-color:rgba(56,248,176,.4);
    color:var(--mint);background:rgba(56,248,176,.10);
  }
  .chip-mint::before{
    content:"";width:6px;height:6px;border-radius:999px;background:var(--mint);
    box-shadow:0 0 8px rgba(56,248,176,.9);
  }

  .section-head{margin-bottom:28px;}
  .section-head h2{font-size:clamp(22px,2.4vw,30px);}
  .section-head p{margin:10px 0 0;color:var(--muted);font-size:15px;max-width:760px;}

  .media-frame{
    position:relative;overflow:hidden;border-radius:14px;
    background:linear-gradient(100deg,#101822 0%,#18232F 50%,#101822 100%);
    background-size:200% 100%;
    animation:shimmer 2.2s linear infinite;
  }
  .media-frame img{width:100%;height:100%;object-fit:cover;}
  .media-frame::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(160deg,rgba(6,9,15,.30),rgba(38,224,255,.12));
  }
  @keyframes shimmer{
    0%{background-position:200% 0;}
    100%{background-position:-200% 0;}
  }
  .js .media-frame img{opacity:0;transition:opacity .5s ease;}
  .js .media-frame img.is-loaded{opacity:1;}

  /* ============ 分类 Hero ============ */
  .page-hero{
    position:relative;overflow:hidden;
    min-height:260px;display:flex;align-items:center;
    border-bottom:1px solid var(--line-soft);
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    opacity:.26;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background:
      linear-gradient(120deg,rgba(6,9,15,.95) 0%,rgba(6,9,15,.72) 52%,rgba(38,224,255,.18) 100%);
  }
  .page-hero-inner{position:relative;z-index:1;padding-top:52px;padding-bottom:52px;width:100%;}
  .page-hero h1{
    margin:16px 0 0;
    font-size:clamp(28px,4vw,46px);
    line-height:1.14;
    letter-spacing:-.02em;
    font-weight:800;
  }
  .page-hero h1 .hl{color:var(--primary);}
  .page-hero-sub{margin:14px 0 0;color:var(--muted);font-size:17px;max-width:720px;}

  /* ============ 图文板块 ============ */
  .split{
    display:grid;gap:28px;align-items:center;
    grid-template-columns:minmax(0,1fr);
  }
  @media (min-width:1024px){
    .split{grid-template-columns:1fr 1.05fr;gap:44px;}
    .split.reverse .split-media{order:2;}
  }
  .split-media{aspect-ratio:12/8;width:100%;}
  .split-body h3{font-size:20px;margin-bottom:10px;}
  .split-body p{color:var(--body-text);font-size:16px;margin-bottom:1.1em;}
  .dot-list li{
    position:relative;padding-left:20px;margin-bottom:10px;
    color:var(--body-text);font-size:15px;line-height:1.8;
  }
  .dot-list li::before{
    content:"";position:absolute;left:0;top:10px;
    width:7px;height:7px;border-radius:2px;background:var(--primary);
    box-shadow:0 0 10px rgba(38,224,255,.65);
  }

  /* ============ 时间轴 ============ */
  .timeline{position:relative;padding-left:0;}
  .timeline::before{
    content:"";position:absolute;left:23px;top:14px;bottom:14px;width:2px;
    background:linear-gradient(180deg,rgba(38,224,255,.9),rgba(38,224,255,.12));
  }
  .tl-item{position:relative;padding-left:74px;margin-bottom:20px;}
  .tl-item:last-child{margin-bottom:0;}
  .tl-node{
    position:absolute;left:0;top:16px;
    width:48px;height:48px;border-radius:999px;
    display:grid;place-items:center;
    font-size:14px;font-weight:700;color:var(--primary);
    background:var(--panel);
    border:1px solid rgba(38,224,255,.45);
    box-shadow:0 0 0 7px rgba(6,9,15,.92), 0 0 20px rgba(38,224,255,.25);
  }
  .tl-card{padding:22px 24px;transition:border-color .2s ease, background .2s ease, transform .2s ease;}
  .tl-card:hover{
    border-color:rgba(38,224,255,.4);
    background:rgba(38,224,255,.05);
    transform:translateY(-3px);
  }
  .tl-card h3{font-size:19px;margin-bottom:8px;}
  .tl-card > p{color:var(--body-text);font-size:15px;margin-bottom:12px;}
  .tl-checks{font-size:14px;color:var(--muted);}
  .tl-checks li{
    position:relative;padding-left:20px;margin-bottom:6px;line-height:1.75;
  }
  .tl-checks li::before{
    content:"";position:absolute;left:2px;top:9px;
    width:8px;height:8px;border-radius:2px;
    border:1.5px solid var(--primary);
  }

  /* ============ 对比行 ============ */
  .compare{
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    background:rgba(12,18,28,.74);
  }
  .compare-head,
  .compare-row{
    display:grid;
    grid-template-columns:1.05fr 1.35fr 1.7fr .8fr;
    gap:18px;
    align-items:start;
  }
  .compare-head{
    padding:14px 22px;
    background:rgba(255,255,255,.04);
    border-bottom:1px solid var(--line-soft);
    font-size:13px;color:var(--dim);letter-spacing:.08em;
  }
  .compare-row{
    padding:20px 22px;
    border-top:1px solid var(--line-soft);
    transition:background .2s ease, box-shadow .2s ease;
  }
  .compare-row:first-of-type{border-top:0;}
  .compare-row:hover{
    background:rgba(38,224,255,.055);
    box-shadow:inset 3px 0 0 rgba(38,224,255,.7);
  }
  .cmp-cell{min-width:0;}
  .cmp-name{font-size:16px;font-weight:600;color:var(--text);}
  .cmp-scene{font-size:14px;color:var(--muted);line-height:1.75;}
  .cmp-key{font-size:14px;color:var(--body-text);line-height:1.8;}
  @media (max-width:900px){
    .compare-head{display:none;}
    .compare-row{grid-template-columns:1fr;gap:12px;padding:20px;}
    .cmp-cell::before{
      content:attr(data-label);
      display:block;font-size:12px;color:var(--dim);
      letter-spacing:.08em;margin-bottom:4px;
    }
  }

  /* ============ 提示两列 ============ */
  .tips-grid{display:grid;gap:20px;grid-template-columns:1fr;}
  @media (min-width:768px){.tips-grid{grid-template-columns:1fr 1fr;}}
  .tip-card{
    padding:24px;border-radius:var(--radius-card);
    background:rgba(18,26,38,.72);
    border:1px solid var(--line);
    transition:border-color .2s ease, transform .2s ease, box-shadow .2s ease;
  }
  .tip-card:hover{
    border-color:rgba(38,224,255,.35);
    transform:translateY(-3px);
    box-shadow:0 26px 56px -30px rgba(38,224,255,.35);
  }
  .tip-card h3{font-size:18px;margin-bottom:12px;display:flex;align-items:center;gap:10px;}
  .tip-num{
    display:inline-grid;place-items:center;
    width:26px;height:26px;border-radius:8px;
    font-size:13px;font-weight:700;color:var(--primary);
    background:rgba(38,224,255,.10);
    border:1px solid rgba(38,224,255,.35);
  }
  .tip-card li{
    position:relative;padding-left:20px;margin-bottom:8px;
    font-size:14px;color:var(--body-text);line-height:1.8;
  }
  .tip-card li::before{
    content:"";position:absolute;left:0;top:11px;
    width:6px;height:6px;border-radius:999px;background:var(--amber);
  }

  /* ============ 窄 CTA 条 ============ */
  .cta-strip{
    padding:0 0 72px;
  }
  @media (max-width:767px){.cta-strip{padding-bottom:48px;}}
  .cta-strip-inner{
    position:relative;overflow:hidden;
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
    gap:20px;padding:28px 32px;
    border-radius:var(--radius-panel);
    border:1px solid rgba(38,224,255,.24);
    background:rgba(255,255,255,.055);
    backdrop-filter:var(--blur);
    -webkit-backdrop-filter:var(--blur);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.07), 0 22px 48px -26px rgba(0,0,0,.9);
  }
  .cta-strip-inner::before{
    content:"";position:absolute;inset:0;
    background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    opacity:.10;
  }
  .cta-strip-inner::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(6,9,15,.9),rgba(38,224,255,.10));
  }
  .cta-strip-text,.cta-strip-actions{position:relative;z-index:1;}
  .cta-strip-text h2{font-size:clamp(20px,2.1vw,26px);}
  .cta-strip-text p{margin:8px 0 0;color:var(--muted);font-size:15px;max-width:620px;}
  .cta-strip-actions{display:flex;gap:12px;flex-wrap:wrap;}
  @media (max-width:640px){
    .cta-strip-inner{padding:24px 20px;}
    .cta-strip-actions{width:100%;}
    .cta-strip-actions .btn-primary,
    .cta-strip-actions .btn-ghost{flex:1 1 100%;}
  }

  /* ============ 页脚 ============ */
  .site-footer{
    position:relative;
    border-top:1px solid rgba(255,255,255,.08);
    background:rgba(8,12,19,.85);
    padding:56px 0 28px;
  }
  .site-footer::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(38,224,255,.55),transparent);
  }
  .footer-grid{
    display:grid;gap:32px;
    grid-template-columns:1fr;
  }
  @media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;}}
  .brand-footer{position:static;transform:none;padding:0;}
  .footer-brand-text{margin:14px 0 0;color:var(--muted);font-size:14px;line-height:1.8;max-width:320px;}
  .footer-title{font-size:14px;font-weight:600;color:var(--primary);margin-bottom:14px;letter-spacing:.02em;}
  .footer-list li{margin-bottom:10px;}
  .footer-link{
    font-size:14px;color:var(--muted);
    transition:color .2s ease, transform .2s ease;
    display:inline-block;
  }
  .footer-link:hover{color:#fff;transform:translateX(2px);}
  .footer-note{margin:0;color:var(--muted);font-size:14px;line-height:1.9;}
  .footer-bottom{
    margin-top:40px;padding-top:20px;
    border-top:1px solid var(--line-soft);
    display:flex;flex-wrap:wrap;gap:10px 24px;
    justify-content:space-between;
    color:var(--dim);font-size:13px;
  }
  .footer-bottom p{margin:0;}

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

/* roulang page: category2 */
:root{
  --bg:#06090F;
  --panel:#0C121C;
  --panel-2:#121A26;
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.06);
  --primary:#26E0FF;
  --primary-deep:#12B6D6;
  --amber:#FFB43D;
  --mint:#38F8B0;
  --text:#E9F1F8;
  --muted:#9AA9BC;
  --weak:#6B7B90;
  --radius-card:18px;
  --radius-panel:22px;
  --radius-btn:12px;
  --blur:16px;
  --shadow-card:0 22px 48px -26px rgba(0,0,0,.9);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  background-image:
    radial-gradient(1100px 520px at 50% -12%, rgba(38,224,255,.10), rgba(6,9,15,0) 72%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:auto, 64px 64px, 64px 64px;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}

::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:#1B2836;border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(38,224,255,.4);}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){ .container{padding:0 32px;} }

.section{padding:48px 0;}
@media (min-width:1024px){ .section{padding:72px 0;} }

.section-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
.section-sub{color:var(--muted);font-size:15px;line-height:1.8;margin-top:10px;max-width:780px;}
.section-head{margin-bottom:28px;display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;}
.hl{color:var(--primary);}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;}
.announce{
  background:linear-gradient(90deg, rgba(38,224,255,.14), rgba(38,224,255,.05));
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(38,224,255,.16);
  height:36px;
  display:flex;
  align-items:center;
}
.announce-inner{display:flex;align-items:center;gap:10px;height:36px;}
.announce p{font-size:12.5px;color:#BFE9F5;letter-spacing:.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.announce-dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px rgba(56,248,176,.9);flex:0 0 auto;}
.announce-close{margin-left:auto;background:none;border:0;color:var(--muted);font-size:18px;line-height:1;cursor:pointer;padding:6px 8px;border-radius:8px;transition:color .18s,background .18s;}
.announce-close:hover{color:var(--text);background:rgba(255,255,255,.08);}

.navbar{
  background:rgba(9,13,21,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-inner{position:relative;display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px;}
@media (min-width:1024px){ .nav-inner{height:72px;} }

.nav-left,.nav-right{display:none;align-items:center;gap:8px;flex:1 1 0;min-width:0;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
@media (min-width:1024px){ .nav-left,.nav-right{display:flex;} }

.nav-link{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 10px;font-size:15px;color:var(--muted);white-space:nowrap;transition:color .18s;}
.nav-link::after{content:"";position:absolute;left:10px;right:10px;bottom:10px;height:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:#FFFFFF;}
.nav-link.is-active::after{transform:scaleX(1);}

.brand{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:12px;transition:background .18s;}
@media (min-width:1024px){
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
}
.brand:hover{background:rgba(255,255,255,.05);}
.brand-mark{
  width:28px;height:28px;flex:0 0 auto;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;color:#04121A;
  background:linear-gradient(150deg,#7DF0FF,#26E0FF 55%,#12B6D6);
  box-shadow:0 0 0 1px rgba(38,224,255,.5), 0 8px 20px -8px rgba(38,224,255,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:17px;font-weight:700;letter-spacing:.01em;}
.brand-sub{font-size:11px;color:var(--primary);letter-spacing:.18em;}
@media (max-width:1023px){
  .brand-main{font-size:15px;}
  .brand-sub{font-size:10px;letter-spacing:.14em;}
}

.nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0 10px;background:none;border:0;cursor:pointer;}
.nav-toggle span{display:block;height:2px;width:22px;background:var(--text);border-radius:2px;transition:transform .2s,opacity .2s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media (min-width:1024px){ .nav-toggle{display:none;} }

.mobile-panel{display:none;}
.mobile-panel.is-open{display:block;background:rgba(8,12,20,.97);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);padding:0 20px 20px;}
.mobile-panel a{display:flex;align-items:center;min-height:52px;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line-soft);transition:color .18s,padding-left .18s;}
.mobile-panel a:hover{color:var(--text);}
.mobile-panel a.is-active{color:var(--primary);}
.mobile-panel a.btn-primary{margin-top:16px;justify-content:center;border-bottom:0;color:#04121A;}

/* ---------- buttons ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  font-size:15px;font-weight:600;color:#04121A;
  border:1px solid rgba(255,255,255,.35);
  border-radius:var(--radius-btn);
  background:linear-gradient(180deg,#6FEBFF,#26E0FF 48%,#12B6D6);
  box-shadow:0 12px 30px -10px rgba(38,224,255,.55);
  cursor:pointer;transition:transform .18s,filter .18s,box-shadow .18s;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(38,224,255,.7);}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.35);}
.btn-primary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-primary:disabled{opacity:.45;cursor:not-allowed;}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px;}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  font-size:15px;font-weight:600;color:var(--text);
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.5);
  border-radius:var(--radius-btn);
  cursor:pointer;transition:background .18s,border-color .18s,transform .18s;
}
.btn-ghost:hover{background:rgba(38,224,255,.08);border-color:rgba(38,224,255,.6);transform:translateY(-2px);}
.btn-ghost:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

/* ---------- chips ---------- */
.chip{display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;border:1px solid rgba(38,224,255,.45);color:#B9F1FF;background:rgba(38,224,255,.07);}
.chip-amber{border-color:transparent;background:rgba(255,180,61,.16);color:#FFD79A;}
.chip-mint{border-color:rgba(56,248,176,.35);background:rgba(56,248,176,.08);color:#9FF6D4;}
.chip-dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 8px rgba(56,248,176,.9);}

/* ---------- panels ---------- */
.glass-card{
  background:rgba(255,255,255,.055);
  backdrop-filter:blur(var(--blur)) saturate(140%);
  -webkit-backdrop-filter:blur(var(--blur)) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07), var(--shadow-card);
}
.solid-panel{
  background:linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012));
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:40px 0 48px;}
@media (min-width:1024px){ .hero{padding:64px 0 72px;} }
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;}
.hero-bg img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.34;}
.hero-scrim{
  position:absolute;inset:0;
  background:
    linear-gradient(120deg, rgba(6,9,15,.94) 8%, rgba(6,9,15,.72) 46%, rgba(38,224,255,.20) 100%),
    radial-gradient(760px 420px at 78% 8%, rgba(38,224,255,.22), rgba(6,9,15,0) 70%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
@media (min-width:1024px){ .hero-grid{grid-template-columns:55fr 45fr;gap:48px;} }

.hero h1{font-size:clamp(30px,4.4vw,48px);line-height:1.14;font-weight:800;letter-spacing:-.02em;margin:18px 0 16px;max-width:16em;}
.hero-lead{font-size:18px;color:#C4D4E4;line-height:1.75;max-width:44ch;}
.hero-text{font-size:15.5px;color:var(--muted);line-height:1.9;margin-top:16px;max-width:52ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
@media (max-width:639px){ .hero-actions{flex-direction:column;} .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%;} }
.hero-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line-soft);}
@media (min-width:768px){ .hero-facts{grid-template-columns:repeat(4,minmax(0,1fr));} }
.fact-num{font-size:20px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.fact-label{font-size:12.5px;color:var(--weak);letter-spacing:.04em;margin-top:2px;}

/* ---------- phone ---------- */
.phone-wrap{display:flex;justify-content:center;}
.phone-frame{
  position:relative;width:100%;max-width:330px;padding:12px;border-radius:32px;
  background:linear-gradient(160deg,#161F2C,#080C14);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 0 0 1px rgba(38,224,255,.10), 0 40px 90px -46px rgba(38,224,255,.65), 0 30px 60px -30px rgba(0,0,0,.9);
  animation:floaty 7s ease-in-out infinite;
}
.phone-notch{position:absolute;top:18px;left:50%;transform:translateX(-50%);width:76px;height:6px;border-radius:999px;background:rgba(0,0,0,.75);z-index:3;}
.phone-screen{position:relative;border-radius:24px;overflow:hidden;background:#0A0F18;aspect-ratio:9 / 19;}
.phone-screen img{width:100%;height:100%;object-fit:cover;}
.phone-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,9,15,.30) 0%, rgba(38,224,255,.16) 55%, rgba(6,9,15,.86) 100%);
}
.phone-caption{
  position:absolute;left:14px;right:14px;bottom:14px;z-index:4;
  background:rgba(6,9,15,.72);border:1px solid var(--line);border-radius:14px;padding:12px 14px;backdrop-filter:blur(10px);
}
.phone-caption strong{display:block;font-size:14px;font-weight:600;}
.phone-caption span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px;}
.phone-badge{position:absolute;top:26px;right:-6px;z-index:5;}

/* ---------- steps ---------- */
.split{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){ .split{grid-template-columns:55fr 45fr;gap:48px;align-items:start;} }

.step{border:1px solid var(--line-soft);border-radius:14px;background:rgba(255,255,255,.04);margin-bottom:10px;overflow:hidden;transition:border-color .2s,background .2s;}
.step[open]{border-color:rgba(38,224,255,.32);background:rgba(255,255,255,.07);box-shadow:inset 3px 0 0 var(--primary);}
.step summary{
  display:flex;align-items:center;gap:14px;padding:16px 18px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);min-height:56px;
}
.step summary::-webkit-details-marker{display:none;}
.step-num{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:#04121A;
  background:linear-gradient(150deg,#7DF0FF,#26E0FF);
}
.step summary::after{content:"";margin-left:auto;width:9px;height:9px;border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(45deg);transition:transform .2s;flex:0 0 auto;}
.step[open] summary::after{transform:rotate(-135deg);}
.step-body{padding:0 18px 18px 60px;font-size:15px;color:var(--muted);line-height:1.85;border-top:1px solid var(--line-soft);padding-top:14px;}

/* ---------- checklist ---------- */
.checklist{display:grid;gap:12px;margin-top:18px;}
.checklist li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);line-height:1.75;}
.checklist li::before{
  content:"";flex:0 0 auto;width:16px;height:16px;margin-top:5px;border-radius:4px;
  background:rgba(38,224,255,.14);border:1px solid rgba(38,224,255,.5);
  box-shadow:inset 0 0 0 3px rgba(6,9,15,.9);
}

/* ---------- split cards 7/5 ---------- */
.cards-75{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:1024px){ .cards-75{grid-template-columns:repeat(12,1fr);gap:24px;} .span-7{grid-column:span 7;} .span-5{grid-column:span 5;} }
.card-pad{padding:22px;}
@media (min-width:768px){ .card-pad{padding:26px;} }
.card-title{font-size:19px;font-weight:600;letter-spacing:-.01em;}
.card-desc{font-size:14.5px;color:var(--muted);line-height:1.85;margin-top:10px;}
.card-media{border-radius:14px;overflow:hidden;position:relative;margin-top:18px;}
.card-media img{width:100%;height:180px;object-fit:cover;}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(6,9,15,.05), rgba(38,224,255,.14));}

/* ---------- ledger ---------- */
.ledger{border:1px solid var(--line-soft);border-radius:var(--radius-card);overflow:hidden;background:rgba(12,18,28,.7);}
.ledger-row{
  display:grid;grid-template-columns:minmax(120px,1fr) minmax(150px,1.15fr) minmax(210px,1.7fr) 96px;
  gap:16px;padding:16px 20px;font-size:14.5px;color:var(--muted);
  border-bottom:1px solid var(--line-soft);transition:background .18s;
}
.ledger-row:last-child{border-bottom:0;}
.ledger-row:hover{background:rgba(38,224,255,.06);}
.ledger-head{font-size:12.5px;letter-spacing:.1em;color:var(--weak);background:rgba(255,255,255,.03);text-transform:none;}
.ledger-row strong{color:var(--text);font-weight:600;}
@media (max-width:767px){
  .ledger-head{display:none;}
  .ledger-row{grid-template-columns:1fr;gap:6px;padding:16px 18px;}
  .ledger-row span:last-child{justify-self:start;}
}

/* ---------- risk band ---------- */
.risk-band{
  background:rgba(255,180,61,.08);
  border:1px solid rgba(255,180,61,.22);
  border-left:3px solid var(--amber);
  border-radius:16px;
  padding:20px 22px;
}
.risk-band h3{font-size:17px;font-weight:600;color:#FFD79A;}
.risk-list{display:grid;gap:10px;margin-top:14px;}
.risk-list li{font-size:14.5px;color:#D8C7A6;line-height:1.8;padding-left:16px;position:relative;}
.risk-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--amber);}

/* ---------- faq ---------- */
.faq-list{max-width:860px;}
.faq-item{border:1px solid var(--line-soft);border-radius:14px;background:rgba(255,255,255,.05);margin-bottom:10px;overflow:hidden;transition:background .2s,border-color .2s,box-shadow .2s;}
.faq-item[open]{background:rgba(255,255,255,.078);border-color:rgba(38,224,255,.28);box-shadow:inset 3px 0 0 var(--primary);}
.faq-item summary{display:flex;align-items:center;gap:14px;padding:18px 20px;cursor:pointer;list-style:none;font-size:16px;font-weight:600;min-height:56px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"";margin-left:auto;width:9px;height:9px;border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(45deg);transition:transform .2s;flex:0 0 auto;}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-body{padding:16px 20px 20px;border-top:1px solid var(--line-soft);font-size:15px;color:var(--muted);line-height:1.85;}
.faq-body a{color:var(--primary);border-bottom:1px dashed rgba(38,224,255,.5);}

/* ---------- cta ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--radius-panel);
  border:1px solid rgba(38,224,255,.22);
  background:linear-gradient(110deg, rgba(12,18,28,.94), rgba(18,26,38,.82)), rgba(255,255,255,.04);
  padding:32px 24px;
}
@media (min-width:768px){ .cta-panel{padding:40px 36px;} }
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
@media (max-width:639px){ .cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%;} }

/* ---------- footer ---------- */
.site-footer{margin-top:24px;border-top:1px solid transparent;border-image:linear-gradient(90deg, rgba(38,224,255,0), rgba(38,224,255,.55), rgba(255,180,61,.35), rgba(38,224,255,0)) 1;padding:48px 0 28px;background:rgba(8,11,18,.7);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;} }
.brand-footer{margin-bottom:14px;}
.footer-brand-text{font-size:14px;color:var(--muted);line-height:1.85;max-width:34ch;}
.footer-title{font-size:14px;font-weight:600;color:var(--primary);letter-spacing:.06em;margin-bottom:16px;}
.footer-list{display:grid;gap:10px;}
.footer-link{font-size:14px;color:var(--muted);transition:color .18s,transform .18s;display:inline-block;}
.footer-link:hover{color:#FFFFFF;transform:translateX(2px);}
.footer-note{font-size:13.5px;color:var(--weak);line-height:1.9;}
.footer-bottom{margin-top:36px;padding-top:20px;border-top:1px solid var(--line-soft);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12.5px;color:var(--weak);}
.footer-bottom p{line-height:1.8;}

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

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

/* roulang page: category3 */
:root {
    --bg: #06090F;
    --panel: #0C121C;
    --panel-2: #121A26;
    --primary: #26E0FF;
    --primary-deep: #0FB6D8;
    --amber: #FFB43D;
    --mint: #38F8B0;
    --text: #E9F1F8;
    --muted: #9AA9BC;
    --weak: #6B7B90;
    --line: rgba(255, 255, 255, 0.09);
    --line-soft: rgba(255, 255, 255, 0.06);
    --radius: 18px;
    --radius-lg: 22px;
    --radius-btn: 12px;
    --blur: blur(16px) saturate(140%);
    --glass: rgba(255, 255, 255, 0.055);
    --shadow-card: 0 22px 48px -26px rgba(0, 0, 0, 0.9);
    --shadow-glow: 0 12px 30px -10px rgba(38, 224, 255, 0.55);
  }

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

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

  body {
    margin: 0;
    background-color: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    text-align: left;
    -webkit-font-smoothing: antialiased;
    background-image:
      radial-gradient(ellipse 70% 55% at 50% -8%, rgba(38, 224, 255, 0.10), transparent 72%),
      linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
    background-size: 100% 100%, 48px 48px, 48px 48px;
    background-attachment: fixed, fixed, fixed;
  }

  body.is-locked { overflow: hidden; }

  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  button { font: inherit; }
  input, textarea { font: inherit; color: inherit; }
  ul, ol { margin: 0; padding: 0; list-style: none; }
  p { margin: 0; }
  h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -0.01em; }

  ::-webkit-scrollbar { width: 8px; height: 8px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: #1B2836; border-radius: 999px; }
  ::-webkit-scrollbar-thumb:hover { background: rgba(38, 224, 255, 0.4); }

  .container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  /* ===== 按钮 ===== */
  .btn-primary,
  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    padding: 0 22px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    transition: transform 180ms ease, box-shadow 220ms ease, background-color 180ms ease, border-color 180ms ease, filter 180ms ease, letter-spacing 180ms ease;
  }

  .btn-primary {
    color: #04141A;
    background: linear-gradient(180deg, #26E0FF 0%, #0FB6D8 100%);
    border: 1px solid rgba(255, 255, 255, 0.28);
    box-shadow: var(--shadow-glow);
  }

  .btn-primary:hover {
    filter: brightness(1.08);
    transform: translateY(-2px);
    box-shadow: 0 16px 40px -10px rgba(38, 224, 255, 0.7);
    letter-spacing: 0.01em;
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.35);
  }

  .btn-ghost {
    color: var(--text);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.18);
  }

  .btn-ghost:hover {
    background: rgba(38, 224, 255, 0.08);
    border-color: rgba(38, 224, 255, 0.6);
    transform: translateY(-2px);
  }

  .btn-sm { min-height: 38px; padding: 0 16px; font-size: 14px; border-radius: 10px; }

  .btn-primary:focus-visible,
  .btn-ghost:focus-visible,
  .nav-link:focus-visible,
  .footer-link:focus-visible,
  .brand:focus-visible,
  summary:focus-visible,
  input:focus-visible,
  textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
  }

  .btn-primary[disabled],
  .btn-primary.is-disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

  /* ===== 徽章 / 标签 ===== */
  .chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 24px;
    padding: 0 10px;
    border-radius: 999px;
    font-size: 12px;
    letter-spacing: 0.08em;
    line-height: 1;
    white-space: nowrap;
  }

  .chip-outline { color: var(--primary); border: 1px solid rgba(38, 224, 255, 0.45); background: rgba(38, 224, 255, 0.07); }
  .chip-amber { color: #1B1204; background: var(--amber); font-weight: 700; letter-spacing: 0.04em; }
  .chip-mint { color: var(--mint); border: 1px solid rgba(56, 248, 176, 0.35); background: rgba(56, 248, 176, 0.08); }
  .chip-mint::before {
    content: "";
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--mint);
    box-shadow: 0 0 8px rgba(56, 248, 176, 0.85);
  }

  /* ===== 玻璃面板 ===== */
  .glass-card {
    background: var(--glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.07);
    transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
  }

  .glass-card:hover {
    transform: translateY(-4px);
    border-color: rgba(38, 224, 255, 0.42);
    box-shadow: 0 26px 56px -30px rgba(38, 224, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.07);
  }

  /* ===== 顶部公告条 ===== */
  .site-header { position: sticky; top: 0; z-index: 60; }

  .announce {
    background: rgba(12, 18, 28, 0.82);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line-soft);
  }

  .announce.is-hidden { display: none; }

  .announce-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 36px;
    padding-top: 4px;
    padding-bottom: 4px;
  }

  .announce-dot {
    flex: 0 0 auto;
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--mint);
    box-shadow: 0 0 10px rgba(56, 248, 176, 0.9);
  }

  .announce p {
    flex: 1 1 auto;
    font-size: 12.5px;
    line-height: 1.5;
    color: var(--primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .announce-close {
    flex: 0 0 auto;
    width: 26px; height: 26px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
  }

  .announce-close:hover { color: var(--primary); border-color: rgba(38, 224, 255, 0.5); background: rgba(38, 224, 255, 0.08); }

  /* ===== 导航 ===== */
  .navbar {
    background: rgba(6, 9, 15, 0.78);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 72px;
  }

  .nav-left, .nav-right { display: none; align-items: center; gap: 4px; }

  .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 12px;
    font-size: 15px;
    color: var(--muted);
    transition: color 180ms ease;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 12px; right: 12px; bottom: 6px;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 180ms ease;
    border-radius: 2px;
  }

  .nav-link:hover { color: var(--primary); }
  .nav-link:hover::after { transform: scaleX(1); }
  .nav-link.is-active { color: var(--text); }
  .nav-link.is-active::after { transform: scaleX(1); }

  .brand {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    border-radius: 14px;
  }

  .brand-mark {
    width: 28px; height: 28px;
    display: grid;
    place-items: center;
    border-radius: 9px;
    font-size: 15px;
    font-weight: 700;
    color: #04141A;
    background: radial-gradient(circle at 30% 25%, #8FF2FF 0%, #26E0FF 45%, #0A8BA6 100%);
    box-shadow: 0 0 18px -2px rgba(38, 224, 255, 0.7);
  }

  .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
  .brand-main { font-size: 17px; font-weight: 700; letter-spacing: 0.01em; color: var(--text); }
  .brand-sub { font-size: 11px; letter-spacing: 0.18em; color: var(--primary); }

  .nav-toggle {
    margin-left: auto;
    width: 44px; height: 44px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--line);
    border-radius: 12px;
    cursor: pointer;
  }

  .nav-toggle span {
    display: block;
    width: 18px; height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 200ms ease, opacity 200ms ease;
  }

  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .mobile-panel {
    display: none;
    background: rgba(6, 9, 15, 0.96);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    padding: 6px 20px 18px;
  }

  .mobile-panel.is-open { display: block; }

  .mobile-panel a {
    display: flex;
    align-items: center;
    min-height: 52px;
    font-size: 15px;
    color: var(--muted);
    border-bottom: 1px solid var(--line-soft);
  }

  .mobile-panel a.is-active { color: var(--primary); }
  .mobile-panel a.btn-primary { justify-content: center; margin-top: 14px; min-height: 46px; border-bottom: none; color: #04141A; }

  /* ===== Hero ===== */
  .page-hero {
    position: relative;
    overflow: hidden;
    padding: 48px 0 52px;
    border-bottom: 1px solid var(--line-soft);
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.42;
  }

  .hero-veil {
    position: absolute;
    inset: 0;
    background:
      linear-gradient(180deg, rgba(6, 9, 15, 0.74) 0%, rgba(6, 9, 15, 0.9) 58%, var(--bg) 100%),
      linear-gradient(115deg, rgba(38, 224, 255, 0.20) 0%, rgba(38, 224, 255, 0) 58%);
  }

  .hero-inner { position: relative; z-index: 1; max-width: 880px; }

  .crumbs { margin-bottom: 18px; }

  .crumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--weak); }
  .crumbs li { display: inline-flex; align-items: center; gap: 8px; }
  .crumbs li + li::before { content: "/"; color: var(--primary); opacity: 0.7; }
  .crumbs a { color: var(--muted); transition: color 180ms ease; }
  .crumbs a:hover { color: var(--primary); }
  .crumbs li[aria-current="page"] { color: var(--text); max-width: 60vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

  .page-hero h1 {
    margin-top: 16px;
    font-size: clamp(28px, 3.8vw, 44px);
    line-height: 1.18;
    font-weight: 800;
    letter-spacing: -0.02em;
  }

  .page-hero h1 .hl { color: var(--primary); }

  .hero-sub {
    margin-top: 14px;
    max-width: 720px;
    font-size: 17px;
    line-height: 1.8;
    color: var(--muted);
  }

  .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

  .hero-facts {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 28px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--line-soft);
  }

  .hero-facts li { display: flex; align-items: baseline; gap: 8px; font-size: 13px; color: var(--muted); }
  .hero-facts strong { font-size: 20px; font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; }

  /* ===== 板块 ===== */
  .section { padding: 72px 0; }
  .section-tight { padding: 0 0 72px; }
  .section-alt { background: rgba(12, 18, 28, 0.55); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }

  .section-head { margin-bottom: 28px; max-width: 760px; }
  .section-head h2 { font-size: clamp(22px, 2.4vw, 30px); line-height: 1.3; font-weight: 700; }
  .section-head p { margin-top: 10px; font-size: 15px; color: var(--muted); }

  /* ===== 自检清单瀑布流 ===== */
  .masonry { display: grid; grid-template-columns: 1fr; gap: 24px; }
  .masonry-col { display: flex; flex-direction: column; gap: 24px; }

  .check-card { padding: 24px; }
  .check-card h3 { margin-top: 14px; font-size: 18px; font-weight: 600; }

  .check-icon {
    width: 44px; height: 44px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    color: var(--primary);
    background: rgba(38, 224, 255, 0.08);
    border: 1px solid rgba(38, 224, 255, 0.22);
  }

  .check-icon svg { width: 20px; height: 20px; }

  .check-list { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }

  .check-list li {
    display: flex;
    gap: 10px;
    font-size: 14.5px;
    line-height: 1.65;
    color: var(--muted);
  }

  .check-list li::before {
    content: "";
    flex: 0 0 auto;
    width: 13px; height: 7px;
    margin-top: 8px;
    border-left: 2px solid var(--primary);
    border-bottom: 2px solid var(--primary);
    transform: rotate(-45deg);
  }

  .check-card--tall .check-list li { color: #B7C4D4; }

  /* ===== 处理顺序 ===== */
  .step-row { display: grid; grid-template-columns: 1fr; gap: 18px; }

  .step-item {
    position: relative;
    padding: 22px 22px 22px 24px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: background-color 200ms ease, border-color 200ms ease, transform 200ms ease;
  }

  .step-item:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(38, 224, 255, 0.35); transform: translateY(-3px); }

  .step-num {
    display: inline-grid;
    place-items: center;
    width: 32px; height: 32px;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    background: rgba(38, 224, 255, 0.08);
    border: 1px solid rgba(38, 224, 255, 0.4);
    font-variant-numeric: tabular-nums;
  }

  .step-item h3 { margin-top: 14px; font-size: 17px; font-weight: 600; }
  .step-item p { margin-top: 8px; font-size: 14.5px; color: var(--muted); }

  /* ===== 图文区 ===== */
  .feature { display: grid; grid-template-columns: 1fr; gap: 32px; align-items: center; }

  .feature-media { position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); }
  .feature-media img { width: 100%; height: 100%; min-height: 220px; object-fit: cover; aspect-ratio: 16 / 10; }
  .feature-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(6, 9, 15, 0.16) 0%, rgba(6, 9, 15, 0.62) 100%), linear-gradient(120deg, rgba(38, 224, 255, 0.18) 0%, rgba(38, 224, 255, 0) 60%);
  }

  .feature-body h2 { font-size: clamp(22px, 2.4vw, 30px); line-height: 1.3; }
  .feature-body > p { margin-top: 14px; font-size: 15.5px; color: var(--muted); }

  .mini-list { margin-top: 20px; display: flex; flex-direction: column; gap: 12px; }
  .mini-list li { display: flex; gap: 12px; padding: 14px 16px; background: rgba(255, 255, 255, 0.035); border: 1px solid var(--line-soft); border-radius: 14px; font-size: 14.5px; color: var(--muted); }
  .mini-list strong { color: var(--text); font-weight: 600; }

  /* ===== 风险提示色带 ===== */
  .risk-band {
    background: rgba(255, 180, 61, 0.08);
    border-left: 3px solid var(--amber);
    border-radius: 0 20px 20px 0;
    padding: 24px 26px;
  }

  .risk-band h2 { font-size: 18px; font-weight: 600; color: var(--amber); }
  .risk-list { margin-top: 14px; display: flex; flex-direction: column; gap: 10px; }
  .risk-list li { display: flex; gap: 10px; font-size: 14.5px; color: #D6C3A4; line-height: 1.7; }
  .risk-list li::before { content: "—"; color: var(--amber); flex: 0 0 auto; }

  /* ===== FAQ ===== */
  .faq-list { max-width: 860px; display: flex; flex-direction: column; gap: 10px; }

  .faq-item {
    background: var(--glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--line);
    border-left: 3px solid transparent;
    border-radius: 14px;
    transition: background-color 200ms ease, border-color 200ms ease;
  }

  .faq-item[open] { background: rgba(255, 255, 255, 0.085); border-left-color: var(--primary); }

  .faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 56px;
    padding: 14px 20px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
  }

  .faq-item summary::-webkit-details-marker { display: none; }

  .faq-arrow {
    flex: 0 0 auto;
    width: 10px; height: 10px;
    border-right: 2px solid var(--muted);
    border-bottom: 2px solid var(--muted);
    transform: rotate(45deg);
    transition: transform 200ms ease, border-color 200ms ease;
  }

  .faq-item[open] .faq-arrow { transform: rotate(-135deg); border-color: var(--primary); }

  .faq-body { padding: 0 20px 18px; border-top: 1px solid var(--line-soft); }
  .faq-body p { padding-top: 14px; font-size: 15px; line-height: 1.85; color: var(--muted); }

  /* ===== 表单 ===== */
  .form-panel { padding: 28px 24px; max-width: 860px; }
  .form-panel h2 { font-size: 22px; font-weight: 700; }
  .form-panel > p { margin-top: 10px; font-size: 14.5px; color: var(--muted); }

  .feedback-form { margin-top: 24px; display: grid; grid-template-columns: 1fr; gap: 18px; }

  .field { display: flex; flex-direction: column; gap: 8px; }
  .field label { font-size: 13px; color: var(--muted); letter-spacing: 0.04em; }

  .field input,
  .field textarea {
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: var(--radius-btn);
    color: var(--text);
    transition: border-color 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
  }

  .field textarea { min-height: 130px; resize: vertical; line-height: 1.7; }

  .field input::placeholder,
  .field textarea::placeholder { color: var(--weak); }

  .field input:focus,
  .field textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(38, 224, 255, 0.06);
    box-shadow: 0 0 0 3px rgba(38, 224, 255, 0.20);
  }

  .field.has-error input,
  .field.has-error textarea { border-color: var(--amber); }
  .field.has-error .field-error { display: block; }

  .field-error { display: none; font-size: 13px; color: var(--amber); }

  .form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
  .form-note { font-size: 13.5px; color: var(--mint); min-height: 20px; }

  /* ===== 页脚 ===== */
  .site-footer {
    border-top: 1px solid transparent;
    background: linear-gradient(180deg, rgba(12, 18, 28, 0.4) 0%, rgba(4, 7, 12, 0.9) 100%);
    position: relative;
    padding: 56px 0 28px;
  }

  .site-footer::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(38, 224, 255, 0.5), transparent);
  }

  .footer-grid { display: grid; grid-template-columns: 1fr; gap: 32px; }
  .footer-title { font-size: 14px; font-weight: 600; color: var(--primary); letter-spacing: 0.06em; margin-bottom: 14px; }
  .brand-footer { position: static; transform: none; padding: 0; }

  .footer-brand-text { margin-top: 14px; font-size: 14px; color: var(--muted); max-width: 320px; }
  .footer-list { display: flex; flex-direction: column; gap: 10px; }
  .footer-link { font-size: 14px; color: var(--muted); display: inline-block; transition: color 180ms ease, transform 180ms ease; }
  .footer-link:hover { color: #FFFFFF; transform: translateX(-2px); }
  .footer-note { font-size: 13.5px; color: var(--muted); line-height: 1.8; }

  .footer-bottom {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--line-soft);
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 12.5px;
    color: var(--weak);
    text-align: center;
  }

  /* ===== 响应式 ===== */
  @media (min-width: 480px) {
    .footer-bottom { flex-direction: row; flex-wrap: wrap; justify-content: space-between; text-align: left; }
  }

  @media (max-width: 767px) {
    .announce p { font-size: 12px; }
    .brand-main { font-size: 15px; }
    .brand-sub { font-size: 10px; letter-spacing: 0.14em; }
    .brand-mark { width: 26px; height: 26px; font-size: 14px; }
    .hero-actions .btn-primary,
    .hero-actions .btn-ghost { width: 100%; }
    .section { padding: 48px 0; }
    .section-tight { padding-bottom: 48px; }
    .page-hero { padding: 34px 0 40px; }
  }

  @media (min-width: 768px) {
    .container { padding-left: 32px; padding-right: 32px; }
    .nav-inner { min-height: 72px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .feedback-form { grid-template-columns: repeat(2, 1fr); }
    .field-full { grid-column: 1 / -1; }
    .form-actions { grid-column: 1 / -1; }
    .step-row { grid-template-columns: repeat(2, 1fr); }
    .masonry { grid-template-columns: repeat(2, 1fr); align-items: start; }
    .feature { grid-template-columns: 1.05fr 0.95fr; }
    .form-panel { padding: 34px 32px; }
  }

  @media (min-width: 1024px) {
    .nav-left, .nav-right { display: flex; }
    .nav-toggle, .mobile-panel { display: none !important; }
    .step-row { grid-template-columns: repeat(4, 1fr); }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.3fr; }
    .section { padding: 72px 0; }
    .section-tight { padding-bottom: 72px; }
  }

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

  .animate-breath { animation: breath 4s ease-in-out infinite; }
  .animate-floaty { animation: floaty 7s ease-in-out infinite; }

/* roulang page: category4 */
:root{
  --bg:#06090F;
  --panel:#0C121C;
  --panel-2:#0F1622;
  --panel-3:#121A26;
  --primary:#26E0FF;
  --primary-deep:#12A9CC;
  --amber:#FFB43D;
  --mint:#38F8B0;
  --text:#E9F1F8;
  --muted:#9AA9BC;
  --weak:#6B7B90;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --radius:18px;
  --radius-panel:22px;
  --radius-btn:12px;
  --blur:16px;
  --shadow-card:0 22px 48px -26px rgba(0,0,0,.9);
  --shadow-glow:0 12px 30px -10px rgba(38,224,255,.55);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(70% 46% at 50% -8%, rgba(38,224,255,.10), rgba(6,9,15,0) 70%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:100% 900px, 64px 64px, 64px 64px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;cursor:pointer;}
input{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:#1B2836;border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(38,224,255,.4);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}

/* ---------- 顶部公告 ---------- */
.site-header{position:sticky;top:-36px;z-index:60;}
.announce{height:36px;display:flex;align-items:center;background:rgba(38,224,255,.06);border-bottom:1px solid var(--line);backdrop-filter:blur(10px);}
.announce-inner{display:flex;align-items:center;gap:10px;width:100%;}
.announce-dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px var(--mint);flex:none;}
.announce p{margin:0;flex:1;font-size:13px;color:#A9BCD0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.announce-close{width:28px;height:28px;flex:none;border-radius:8px;color:var(--weak);font-size:18px;line-height:1;background:transparent;border:0;transition:color .2s,background .2s;}
.announce-close:hover{color:var(--primary);background:rgba(255,255,255,.06);}

/* ---------- 导航 ---------- */
.navbar{background:rgba(6,9,15,.78);backdrop-filter:blur(18px) saturate(140%);border-bottom:1px solid var(--line);}
.nav-inner{position:relative;display:flex;align-items:center;justify-content:space-between;height:72px;}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px;}
.nav-link{position:relative;display:inline-block;font-size:15px;color:var(--muted);padding:6px 2px;transition:color .18s;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .18s;}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{transform:scaleX(1);}
.brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:10px;}
.brand-mark{width:28px;height:28px;flex:none;border-radius:8px;display:grid;place-items:center;font-size:14px;font-weight:800;color:#04121A;background-image:radial-gradient(rgba(4,18,26,.32) 1px, transparent 1px),linear-gradient(140deg,#38F8B0,#26E0FF 55%,#12A9CC);background-size:5px 5px,cover;box-shadow:0 0 18px -4px rgba(38,224,255,.7);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:17px;font-weight:700;letter-spacing:.02em;}
.brand-sub{font-size:11px;color:var(--primary);letter-spacing:.18em;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;background:transparent;border:1px solid var(--line);flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:border-color .2s;}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--text);transition:transform .22s,opacity .22s;}
.nav-toggle:hover{border-color:rgba(38,224,255,.6);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{display:none;flex-direction:column;background:rgba(9,13,20,.97);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);}
.mobile-panel.is-open{display:flex;}
.mobile-panel a{padding:0 20px;height:52px;display:flex;align-items:center;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line);transition:color .2s,background .2s;}
.mobile-panel a:hover,.mobile-panel a.is-active{color:var(--primary);background:rgba(38,224,255,.06);}
.mobile-panel a.btn-primary{margin:16px 20px 20px;height:46px;justify-content:center;color:#04121A;border:0;border-radius:var(--radius-btn);}

/* ---------- 按钮 ---------- */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;min-width:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;color:#04121A;background-image:linear-gradient(180deg,#5AEBFF,#26E0FF 45%,#12A9CC);border:1px solid rgba(255,255,255,.3);box-shadow:var(--shadow-glow);transition:transform .2s,filter .2s,box-shadow .2s;white-space:nowrap;}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 38px -10px rgba(38,224,255,.7);}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.35);}
.btn-primary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-primary[disabled]{opacity:.45;cursor:not-allowed;}
.btn-sm{height:38px;font-size:14px;padding:0 16px;}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--radius-btn);border:1px solid var(--line-strong);color:var(--text);font-size:15px;font-weight:600;background:transparent;transition:background .2s,border-color .2s,transform .2s;}
.btn-ghost:hover{background:rgba(38,224,255,.08);border-color:rgba(38,224,255,.6);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-ghost:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-ghost[disabled]{opacity:.45;cursor:not-allowed;}

/* ---------- 徽章与标签 ---------- */
.chip{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;font-size:12px;letter-spacing:.08em;border:1px solid rgba(38,224,255,.45);color:var(--primary);background:rgba(38,224,255,.07);}
.chip-amber{border-color:rgba(255,180,61,.5);color:var(--amber);background:rgba(255,180,61,.1);}
.chip-mint{border-color:rgba(56,248,176,.4);color:var(--mint);background:rgba(56,248,176,.08);}
.chip-mint .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 8px var(--mint);}

/* ---------- 首屏工具区 ---------- */
.tool-hero{position:relative;padding:64px 0 56px;overflow:hidden;border-bottom:1px solid var(--line);}
.tool-hero::before{content:"";position:absolute;inset:0;z-index:0;background:linear-gradient(100deg,#0C121C,#121A26 40%,#0C121C 80%);}
.hero-bg{position:absolute;inset:0;z-index:0;width:100%;height:100%;object-fit:cover;object-position:center;}
.hero-veil{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(6,9,15,.86),rgba(6,9,15,.94)),linear-gradient(120deg,rgba(38,224,255,.2),rgba(6,9,15,0) 55%);}
.hero-inner{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak);margin-bottom:20px;}
.breadcrumb a{color:var(--muted);transition:color .2s;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:rgba(38,224,255,.7);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.page-title{margin:14px 0 0;font-size:clamp(28px,3.6vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.02em;max-width:900px;}
.page-title em{font-style:normal;color:var(--primary);}
.page-sub{margin:14px 0 0;font-size:17px;color:var(--muted);max-width:760px;}
.search-box{position:relative;display:flex;align-items:center;gap:10px;max-width:720px;margin-top:28px;padding:6px 6px 6px 16px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.055);backdrop-filter:blur(var(--blur)) saturate(140%);box-shadow:0 22px 48px -26px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.07);transition:border-color .2s,box-shadow .2s;}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(38,224,255,.2),0 22px 48px -26px rgba(0,0,0,.9);}
.search-box svg{flex:none;color:var(--weak);}
.search-box input{flex:1;min-width:0;height:44px;border:0;background:transparent;color:var(--text);font-size:15px;outline:none;}
.search-box input::placeholder{color:var(--weak);}
.topic-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.topic-pill{height:32px;padding:0 15px;border-radius:999px;font-size:13px;color:var(--muted);border:1px solid var(--line);background:rgba(255,255,255,.04);transition:color .2s,border-color .2s,background .2s;}
.topic-pill:hover{color:var(--text);border-color:var(--line-strong);}
.topic-pill.is-active{background-image:linear-gradient(180deg,#43E7FF,#18B4D8);color:#04121A;font-weight:600;border-color:transparent;box-shadow:0 10px 24px -12px rgba(38,224,255,.8);}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:30px;padding-top:24px;border-top:1px solid var(--line);}
.hero-stat{min-width:120px;}
.hero-stat b{display:block;font-size:22px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;}
.hero-stat span{font-size:13px;color:var(--weak);}

/* ---------- 通用区块 ---------- */
.section{padding:72px 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-title{margin:0;font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.01em;}
.section-desc{margin:10px 0 0;font-size:15px;color:var(--muted);max-width:720px;}
.section-link{font-size:14px;color:var(--primary);transition:opacity .2s;}
.section-link:hover{opacity:.78;}

/* ---------- 快捷入口 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.quick-card{display:flex;gap:16px;align-items:flex-start;padding:18px;border-radius:var(--radius);border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));transition:transform .22s,border-color .22s,box-shadow .22s;}
.quick-card:hover{transform:translateY(-4px);border-color:rgba(38,224,255,.5);box-shadow:0 26px 56px -30px rgba(38,224,255,.35);}
.quick-thumb{position:relative;width:84px;height:84px;flex:none;border-radius:14px;overflow:hidden;background:linear-gradient(100deg,#0C121C,#121A26 40%,#0C121C 80%);}
.quick-thumb img{width:100%;height:100%;object-fit:cover;}
.quick-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(6,9,15,.34),rgba(38,224,255,.18));}
.quick-body{flex:1;min-width:0;}
.quick-title{margin:0;font-size:16px;font-weight:600;display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.quick-text{margin:8px 0 0;font-size:14px;line-height:1.7;color:var(--muted);}

/* ---------- 自查对照 ---------- */
.check-wrap{display:grid;grid-template-columns:1.02fr .98fr;gap:28px;align-items:center;}
.check-media{position:relative;border-radius:var(--radius-panel);overflow:hidden;border:1px solid var(--line);background:linear-gradient(100deg,#0C121C,#121A26 40%,#0C121C 80%);box-shadow:var(--shadow-card);}
.check-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;}
.check-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,9,15,.34),rgba(38,224,255,.16));}
.check-media figcaption{position:absolute;left:18px;right:18px;bottom:16px;z-index:2;font-size:13px;color:#D6E3F0;}
.step-list{display:flex;flex-direction:column;gap:12px;}
.step{display:flex;gap:14px;padding:16px 18px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.035);transition:background .2s,border-color .2s;}
.step:hover{background:rgba(255,255,255,.06);border-color:rgba(38,224,255,.34);}
.step-no{width:28px;height:28px;flex:none;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;color:#04121A;background-image:linear-gradient(140deg,#38F8B0,#26E0FF);}
.step h3{margin:0;font-size:16px;font-weight:600;}
.step p{margin:6px 0 0;font-size:14px;line-height:1.7;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
.faq-group{margin-bottom:26px;}
.faq-group-title{display:flex;align-items:center;gap:10px;margin:0 0 14px;font-size:19px;font-weight:700;}
.faq-group-title::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--primary);box-shadow:0 0 12px rgba(38,224,255,.8);}
.faq-item{margin-bottom:10px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.04);overflow:hidden;transition:background .2s,border-color .2s;}
.faq-item.is-open{background:rgba(255,255,255,.075);border-color:rgba(38,224,255,.36);}
.faq-head{margin:0;font-size:inherit;font-weight:inherit;}
.faq-q{width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 18px;text-align:left;font-size:16px;font-weight:600;line-height:1.5;color:var(--text);background:transparent;border:0;}
.faq-q:hover{color:var(--primary);}
.faq-arrow{position:relative;width:16px;height:16px;flex:none;transition:transform .25s;}
.faq-arrow::before{content:"";position:absolute;left:3px;top:3px;width:7px;height:7px;border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(45deg);}
.faq-item.is-open .faq-arrow{transform:rotate(-180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:14px 18px 18px;border-top:1px solid var(--line);font-size:15px;line-height:1.8;color:#BAC8D8;}
.faq-empty{display:none;padding:38px 20px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--radius);color:var(--muted);}
.faq-empty.is-show{display:block;}
.faq-empty strong{display:block;font-size:16px;color:var(--text);font-weight:600;margin-bottom:6px;}

/* ---------- 未解决面板 ---------- */
.unsolved{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;padding:26px 28px;border-radius:var(--radius-panel);border:1px solid var(--line);background:rgba(255,255,255,.055);backdrop-filter:blur(var(--blur)) saturate(140%);box-shadow:0 22px 48px -26px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.07);}
.unsolved h2{margin:0;font-size:20px;font-weight:700;}
.unsolved p{margin:8px 0 0;font-size:14px;line-height:1.8;color:var(--muted);max-width:720px;}
.unsolved-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.feedback-tip{display:none;margin-top:8px;padding:14px 16px;border-radius:12px;border:1px solid rgba(255,180,61,.35);background:rgba(255,180,61,.08);font-size:14px;color:#EBD6B2;}
.feedback-tip.is-show{display:block;}

/* ---------- CTA ---------- */
.cta-panel{position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line);padding:46px;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;background:#0B1119;box-shadow:var(--shadow-card);}
.cta-panel .cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.32;z-index:0;}
.cta-panel::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(120deg,rgba(6,9,15,.93),rgba(38,224,255,.18));}
.cta-content{position:relative;z-index:2;}
.cta-content h2{margin:0;font-size:clamp(22px,2.6vw,30px);font-weight:700;}
.cta-content p{margin:12px 0 0;font-size:15px;color:#C2D0DE;max-width:620px;}
.cta-actions{position:relative;z-index:2;display:flex;align-items:center;gap:20px;}
.qr-box{width:104px;height:104px;border-radius:14px;border:1px dashed rgba(255,255,255,.3);background:rgba(255,255,255,.05);display:grid;place-items:center;text-align:center;font-size:12px;line-height:1.5;color:var(--weak);padding:8px;}
.hero-breath{animation:breath 4s ease-in-out infinite;}
@keyframes breath{0%,100%{box-shadow:0 12px 30px -10px rgba(38,224,255,.6);}50%{box-shadow:0 12px 42px -8px rgba(38,224,255,1);}}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:48px;background:#070B12;}
.site-footer::before{content:"";display:block;height:1px;background:linear-gradient(90deg,transparent,rgba(38,224,255,.55),transparent);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:32px;padding:56px 0 40px;}
.brand-footer{position:static;transform:none;}
.footer-brand-text{margin:16px 0 0;font-size:14px;line-height:1.85;color:var(--muted);max-width:300px;}
.footer-title{margin:0 0 16px;font-size:14px;font-weight:600;color:var(--primary);letter-spacing:.04em;}
.footer-list li{margin-bottom:10px;}
.footer-link{display:inline-block;font-size:14px;color:var(--muted);transition:color .2s,transform .2s;}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-note{font-size:14px;line-height:1.85;color:var(--muted);}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px 28px;padding:20px 0 32px;border-top:1px solid var(--line);font-size:13px;color:var(--weak);}
.footer-bottom p{margin:0;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-left,.nav-right{gap:20px;}
}
@media (max-width:1023px){
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:flex;}
  .brand{position:static;transform:none;}
  .brand-text{flex-direction:row;align-items:baseline;gap:6px;}
  .brand-main{font-size:16px;}
  .brand-sub{font-size:10px;letter-spacing:.14em;}
  .quick-grid{grid-template-columns:1fr;}
  .check-wrap{grid-template-columns:1fr;}
  .faq-columns{grid-template-columns:1fr;}
  .unsolved{grid-template-columns:1fr;}
  .cta-panel{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .tool-hero{padding:44px 0 40px;}
  .announce p{font-size:12px;}
  .hero-stats{gap:20px;}
  .hero-stat{min-width:104px;}
  .search-box{flex-wrap:wrap;padding:10px 12px;}
  .search-box input{height:40px;}
  .search-box .btn-primary{width:100%;}
  .cta-panel{padding:28px;}
  .cta-actions{flex-direction:column;align-items:flex-start;gap:16px;}
  .faq-q{font-size:15px;padding:12px 14px;}
  .faq-a-inner{padding:12px 14px 16px;}
}
@media (max-width:520px){
  .quick-card{flex-direction:column;}
  .quick-thumb{width:100%;height:132px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}