/* roulang page: index */
:root{
  --bg-0:#07141C;
  --bg-1:#0C2030;
  --bg-2:#102A3B;
  --primary:#1FA2B8;
  --primary-strong:#0E7C93;
  --primary-soft:rgba(31,162,184,.14);
  --accent:#E8B45C;
  --text-1:#EAF3F7;
  --text-2:#A8BEC9;
  --text-3:#6C8794;
  --ok:#3ECF8E;
  --warn:#E8B45C;
  --err:#F06A6A;
  --disabled:#3B4E5A;
  --glass:rgba(255,255,255,.055);
  --glass-border:rgba(255,255,255,.10);
  --glass-top:rgba(255,255,255,.18);
  --line:rgba(255,255,255,.07);
  --radius-card:18px;
  --radius-panel:20px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-badge:6px;
  --shadow-glow:0 0 0 1px rgba(31,162,184,.4), 0 10px 30px rgba(31,162,184,.25);
  --section:104px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:-apple-system,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--text-1);}
button,input,textarea,select{font:inherit;color:inherit;margin:0;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.35;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
svg{flex:none;}
::selection{background:rgba(31,162,184,.35);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--section) 0;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:32px;line-height:1.35;}
.section-head .lead{margin-top:12px;max-width:760px;color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11px;letter-spacing:.3em;color:var(--accent);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);opacity:.7;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-weight:600;font-size:15px;letter-spacing:.01em;
  transition:all 160ms ease-out;
  border:1px solid transparent;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#06131A;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(31,162,184,.45), 0 10px 44px rgba(31,162,184,.42);
  transform:translateY(-1px);
  color:#06131A;
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,162,184,.4), 0 6px 16px rgba(31,162,184,.22);}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.22);
  color:var(--text-2);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--text-1);}
.btn-ghost:active{transform:translateY(1px);}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px;}

.chip{
  display:inline-flex;align-items:center;
  padding:3px 10px;
  border-radius:var(--radius-badge);
  border:1px solid rgba(31,162,184,.45);
  background:var(--primary-soft);
  color:#8FE0EE;
  font-size:12px;letter-spacing:.04em;line-height:1.6;
}
.chip-gold{border-color:rgba(232,180,92,.45);background:rgba(232,180,92,.12);color:var(--accent);}

.glass{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 var(--glass-top);
}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,20,28,.55);
  transition:background 200ms ease, border-color 200ms ease, backdrop-filter 200ms ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(9,24,34,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-inner{
  height:72px;
  display:flex;align-items:center;gap:28px;
  justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:38px;height:38px;flex:none;
  border:2px solid var(--accent);
  border-radius:6px;
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:20px;height:20px;stroke:var(--accent);}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{color:var(--text-1);font-size:16px;font-weight:700;letter-spacing:.02em;}
.brand-text span{font-size:11px;letter-spacing:.2em;color:var(--text-2);}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  position:relative;
  display:block;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  transition:color 160ms ease, background 160ms ease;
}
.nav-menu a:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-menu a.is-active{color:var(--text-1);}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;width:4px;background:var(--primary);border-radius:2px;
}
.nav-menu a:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.nav-actions{display:flex;align-items:center;gap:12px;}

/* ============ mobile tabbar ============ */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:60px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(8,22,31,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid rgba(255,255,255,.08);
}
.tabbar ul{display:flex;height:60px;}
.tabbar li{flex:1;}
.tabbar a{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:100%;
  font-size:10px;
  color:var(--text-3);
}
.tabbar a svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.6;}
.tabbar a.is-active{color:var(--primary);}
.tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--primary);
}
.tabbar a:focus-visible{outline:2px solid var(--primary);outline-offset:-4px;}

/* ============ hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  padding:92px 0 76px;
  background-image:linear-gradient(180deg,rgba(7,20,28,.72),rgba(7,20,28,.9)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(680px 380px at 18% 8%,rgba(31,162,184,.28),transparent 70%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:center;}
.hero h1{
  font-size:46px;line-height:1.22;font-weight:700;
  letter-spacing:.01em;
}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero .sub{
  margin-top:18px;
  font-size:17px;color:var(--text-2);max-width:620px;
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;}
.trust-row{
  display:flex;gap:26px;flex-wrap:wrap;
  margin-top:34px;padding-top:24px;
  border-top:1px solid var(--line);
}
.trust-row div{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:8px;}
.trust-row svg{width:16px;height:16px;stroke:var(--primary);fill:none;stroke-width:2;}
.hero-card{padding:26px;}
.hero-card h3{font-size:18px;margin-bottom:6px;}
.hero-card .tip{font-size:14px;color:var(--text-3);margin-bottom:18px;}
.hero-list li{
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.hero-list li:last-child{border-bottom:0;}
.hero-list b{color:var(--text-1);font-weight:600;}
.hero-list span{font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;color:var(--primary);}
.rule-cloud{height:1px;margin-top:8px;background:linear-gradient(90deg,transparent,rgba(31,162,184,.5),transparent);}

/* ============ pain ============ */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.pain-card{padding:24px;position:relative;transition:transform 120ms ease-out,border-color 120ms ease-out;}
.pain-card:nth-child(even){margin-top:24px;}
.pain-card:hover{transform:translateY(-2px);border-color:rgba(31,162,184,.45);}
.pain-num{
  font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;
  font-size:12px;letter-spacing:.16em;color:var(--primary);
}
.pain-card h3{font-size:19px;margin:10px 0 8px;}
.pain-card p{font-size:15px;color:var(--text-2);margin:0;}

/* ============ flow ============ */
.flow{position:relative;padding-left:36px;}
.flow::before{
  content:"";position:absolute;left:5px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,rgba(31,162,184,.75),rgba(31,162,184,.06));
}
.flow-step{position:relative;display:grid;grid-template-columns:380px 1fr;gap:32px;padding-bottom:48px;}
.flow-step:last-child{padding-bottom:0;}
.flow-step::before{
  content:"";position:absolute;left:-36px;top:10px;
  width:12px;height:12px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(31,162,184,.18),0 0 16px rgba(31,162,184,.8);
}
.flow-step figure{margin:0;border-radius:14px;overflow:hidden;background:var(--bg-2);}
.flow-step figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.flow-step h3{font-size:22px;margin-bottom:10px;}
.flow-step .step-no{font-size:12px;letter-spacing:.2em;color:var(--accent);margin-bottom:8px;display:block;}
.flow-step p{font-size:15px;}
.flow-points{margin-top:14px;display:grid;gap:8px;}
.flow-points li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2);}
.flow-points li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:1px;background:var(--primary);}

/* ============ metrics ============ */
.metric-band{padding:32px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric{text-align:left;}
.metric b{
  display:block;
  font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;
  font-size:32px;line-height:1.2;color:var(--primary);font-weight:600;
}
.metric span{font-size:13px;color:var(--text-2);}
.wide-figure{margin:28px 0 0;border-radius:var(--radius-panel);overflow:hidden;position:relative;background:var(--bg-2);}
.wide-figure img{width:100%;aspect-ratio:21/8;object-fit:cover;}
.wide-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:20px 24px;font-size:14px;color:var(--text-1);background:linear-gradient(180deg,transparent,rgba(7,20,28,.88));}

/* ============ quotes ============ */
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.quote-card{padding:26px;transition:transform 120ms ease-out,border-color 120ms ease-out;}
.quote-card:nth-child(odd){margin-top:-24px;}
.quote-card:hover{transform:translateY(-2px);border-color:rgba(31,162,184,.45);}
.quote-card blockquote{margin:0 0 20px;font-size:16px;color:var(--text-1);line-height:1.85;}
.quote-card blockquote::before{content:"";display:block;width:32px;height:3px;background:var(--accent);border-radius:2px;margin-bottom:16px;}
.quote-meta{display:flex;align-items:center;gap:12px;}
.quote-meta img{width:44px;height:44px;border-radius:50%;object-fit:cover;background:var(--bg-2);}
.quote-meta b{display:block;font-size:15px;color:var(--text-1);font-weight:600;}
.quote-meta span{font-size:13px;color:var(--text-3);}

/* ============ posts ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{padding:0;overflow:hidden;display:flex;flex-direction:column;transition:transform 120ms ease-out,border-color 120ms ease-out;}
.post-card:hover{transform:translateY(-2px);border-color:rgba(31,162,184,.45);}
.post-card figure{margin:0;background:var(--bg-2);}
.post-card figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-body h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-body h3 a:hover{color:var(--primary);}
.post-body .excerpt{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.post-meta time{font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;}
.post-meta .more{color:var(--primary);font-size:13px;display:inline-flex;align-items:center;gap:4px;}
.empty-state{padding:56px 24px;text-align:center;}
.empty-state svg{width:36px;height:36px;stroke:var(--text-3);fill:none;stroke-width:1.6;margin:0 auto 14px;}
.empty-state p{color:var(--text-2);margin-bottom:18px;}

/* ============ faq ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{margin-bottom:12px;border-radius:14px;overflow:hidden;}
.faq-q{
  width:100%;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 20px;
  text-align:left;
  color:var(--text-1);font-size:16px;font-weight:600;
  transition:background 180ms ease;
}
.faq-q:hover{background:rgba(255,255,255,.04);}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:-2px;}
.faq-q svg{width:18px;height:18px;stroke:var(--primary);fill:none;stroke-width:2;transition:transform 200ms ease;}
.faq-item.is-open .faq-q svg{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 200ms ease;
}
.faq-a p{
  padding:0 20px 18px;
  font-size:15px;line-height:1.8;color:var(--text-2);
  max-width:720px;
}
.faq-item.is-open .faq-a{max-height:340px;}

/* ============ cta ============ */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-panel);
  padding:44px;
  background-image:linear-gradient(120deg,rgba(9,26,36,.92),rgba(9,26,36,.78)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  border:1px solid var(--glass-border);
  box-shadow:inset 0 1px 0 var(--glass-top);
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;}
.cta-panel h2{font-size:30px;}
.cta-panel p{margin-top:14px;font-size:16px;color:var(--text-2);}
.cta-points{margin-top:22px;display:grid;gap:10px;}
.cta-points li{display:flex;gap:10px;font-size:15px;color:var(--text-2);}
.cta-points svg{width:16px;height:16px;stroke:var(--primary);fill:none;stroke-width:2;margin-top:6px;}
.form-panel{padding:24px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;
  background:#0A1B26;
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-input);
  padding:11px 14px;
  font-size:15px;
  color:var(--text-1);
  transition:border-color 160ms ease, box-shadow 160ms ease;
}
.field input::placeholder,.field textarea::placeholder{color:#5A7280;}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(31,162,184,.22);
}
.field textarea{resize:vertical;min-height:96px;}
.field.is-error input,.field.is-error textarea{border-color:var(--err);}
.field .err-msg{display:none;font-size:13px;color:var(--err);margin-top:6px;}
.field.is-error .err-msg{display:block;}
.form-note{font-size:13px;color:var(--text-3);margin-top:12px;}
.form-ok{display:none;margin-top:14px;font-size:14px;color:var(--ok);}
.form-ok.is-visible{display:block;}

/* ============ footer ============ */
.site-footer{
  border-top:1px solid rgba(255,255,255,.08);
  background:var(--bg-1);
  padding:64px 0 28px;
  margin-top:8px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);max-width:300px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--text-2);transition:color 160ms ease;}
.footer-col a:hover{color:var(--primary);}
.footer-col p{font-size:14px;color:var(--text-2);margin-bottom:10px;}
.footer-col .domain{font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;color:var(--text-3);font-size:13px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ============ responsive ============ */
@media (max-width:1199px){
  :root{--section:80px;}
  .hero h1{font-size:40px;}
  .flow-step{grid-template-columns:320px 1fr;gap:26px;}
  .container{padding:0 24px;}
}
@media (max-width:991px){
  :root{--section:80px;}
  .nav-menu,.nav-actions .btn{display:none;}
  .tabbar{display:block;}
  body{padding-bottom:76px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:34px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .metric-band{grid-template-columns:repeat(2,1fr);}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{padding:32px;}
  .quote-card:nth-child(odd){margin-top:0;}
}
@media (max-width:767px){
  :root{--section:56px;}
  .container{padding:0 18px;}
  .hero{padding:64px 0 56px;}
  .hero h1{font-size:30px;line-height:1.3;}
  .section-head h2{font-size:24px;}
  .pain-grid,.quote-grid,.post-grid,.metric-band{grid-template-columns:1fr;}
  .pain-card:nth-child(even){margin-top:0;}
  .flow{padding-left:26px;}
  .flow::before{left:4px;}
  .flow-step{grid-template-columns:1fr;gap:18px;}
  .flow-step::before{left:-26px;}
  .cta-panel{padding:24px;}
  .cta-panel h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .nav-inner{height:64px;}
}
@media (max-width:575px){
  .hero h1{font-size:27px;}
  .trust-row{gap:16px;}
  .hero-card,.pain-card,.quote-card{padding:20px;}
  .form-panel{padding:20px;}
}

/* roulang page: article */
:root{
  --bg-0:#07141C;
  --bg-1:#0C2030;
  --bg-2:#102A3B;
  --primary:#1FA2B8;
  --primary-strong:#0E7C93;
  --primary-soft:rgba(31,162,184,.14);
  --accent:#E8B45C;
  --text-1:#EAF3F7;
  --text-2:#A8BEC9;
  --text-3:#6C8794;
  --success:#3ECF8E;
  --warn:#E8B45C;
  --error:#F06A6A;
  --disabled:#3B4E5A;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.07);
  --highlight:rgba(255,255,255,.18);
  --radius-card:18px;
  --radius-panel:20px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-badge:6px;
  --container:1200px;
  --section:104px;
  --font:-apple-system,BlinkMacSystemFont,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(760px 420px at 12% -6%, rgba(31,162,184,.16), transparent 62%),
    radial-gradient(620px 380px at 96% 4%, rgba(232,180,92,.07), transparent 60%);
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:600;line-height:1.35;letter-spacing:.005em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
svg{display:block}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;position:relative;z-index:1}
.section{padding:var(--section) 0}
.section-sm{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11px;letter-spacing:.3em;color:var(--accent);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:rgba(232,180,92,.6)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:32px;line-height:1.35}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px}
.muted{color:var(--text-3)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,20,28,.72);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,backdrop-filter .2s ease;
}
.site-header.is-scrolled{
  background:rgba(7,20,28,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:rgba(255,255,255,.08);
}
.nav-inner{display:flex;align-items:center;gap:28px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:6px;
  border:2px solid var(--accent);
  display:flex;align-items:center;justify-content:center;
  background:rgba(232,180,92,.08);
}
.brand-mark svg{width:20px;height:20px;stroke:var(--accent);fill:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;color:var(--text-1);letter-spacing:.02em}
.brand-text span{font-size:11px;letter-spacing:.2em;color:var(--text-2);margin-top:3px}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-menu a{
  position:relative;
  padding:10px 13px;border-radius:8px;
  font-size:14px;color:var(--text-2);
  transition:color .16s ease,background .16s ease;
}
.nav-menu a:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-menu a.is-active{color:var(--text-1)}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;
  height:2px;width:auto;background:var(--primary);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}

/* ---------- 按钮 ---------- */
.btn{
  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;
  border:1px solid transparent;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease,color .16s ease,opacity .16s ease;
  white-space:nowrap;
}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-primary{
  background:var(--primary);color:#06131A;
  box-shadow:0 0 0 1px rgba(31,162,184,.4),0 10px 30px rgba(31,162,184,.25);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(31,162,184,.45),0 12px 44px rgba(31,162,184,.34);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(31,162,184,.4),0 6px 18px rgba(31,162,184,.2)}
.btn-ghost{
  background:transparent;color:var(--text-2);
  border-color:rgba(255,255,255,.22);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--text-1);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn.is-loading::after{
  content:"";width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(6,19,26,.35);border-top-color:#06131A;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 面包屑 ---------- */
.crumbs{padding:26px 0 0}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:rgba(255,255,255,.2)}
.crumbs a{color:var(--text-3);transition:color .16s ease}
.crumbs a:hover{color:var(--primary)}
.crumbs .current{color:var(--text-2);max-width:36ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-hero{position:relative;padding:36px 0 0;overflow:hidden}
.article-hero .hero-bg{
  position:absolute;inset:0 0 34%;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.28;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent);
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent);
}
.article-hero .container{position:relative}
.article-head{max-width:860px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:var(--radius-badge);
  font-size:12px;letter-spacing:.04em;
  background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(31,162,184,.34);
}
.badge-gold{background:rgba(232,180,92,.12);color:var(--accent);border-color:rgba(232,180,92,.34)}
.article-head h1{
  font-size:46px;line-height:1.22;margin:20px 0 18px;
  letter-spacing:-.01em;
}
.article-lead{
  font-size:17px;line-height:1.8;color:var(--text-2);
  max-width:760px;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:26px;padding-top:20px;
  border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.6}
.meta-row .num{font-family:var(--mono);letter-spacing:.02em}
.cloud-divider{
  margin-top:40px;height:1px;width:100%;
  background:linear-gradient(90deg,transparent,rgba(31,162,184,.5),rgba(255,255,255,.12),transparent);
  position:relative;
}
.cloud-divider::after{
  content:"";position:absolute;left:0;right:0;top:-9px;height:18px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='72' height='18' viewBox='0 0 72 18' fill='none' stroke='%231FA2B8' stroke-width='1.2'%3E%3Cpath d='M0 9c6 0 8-5 14-5s8 5 14 5 8-5 14-5 8 5 14 5 8-5 16-5'/%3E%3C/svg%3E");
  background-repeat:repeat-x;opacity:.08;
}

/* ---------- 正文 ---------- */
.article-layout{padding:56px 0 0}
.prose-wrap{
  max-width:760px;margin:0 auto;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  padding:44px 44px 40px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 var(--highlight),0 0 60px rgba(31,162,184,.07);
}
.prose{font-size:16px;line-height:1.9;color:var(--text-2)}
.prose p{margin:0 0 1.35em}
.prose h2{
  position:relative;
  font-size:26px;line-height:1.4;
  margin:2.4em 0 .9em;padding-left:16px;
  color:var(--text-1);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:4px;
  border-radius:2px;background:var(--primary);
}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:20px;margin:1.8em 0 .6em;color:var(--text-1)}
.prose ul,.prose ol{margin:0 0 1.4em;padding-left:0}
.prose ul li{position:relative;padding-left:20px;margin-bottom:.55em}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.75em;
  width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.prose ol{counter-reset:item}
.prose ol li{position:relative;padding-left:30px;margin-bottom:.55em;counter-increment:item}
.prose ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-family:var(--mono);font-size:13px;color:var(--primary);line-height:1.9;
}
.prose blockquote{
  margin:1.6em 0;padding:18px 22px;
  background:var(--glass);
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-badge) var(--radius-badge) 0;
  font-size:17px;color:var(--text-1);
}
.prose img{
  border-radius:12px;margin:1.6em auto 12px;
  background:var(--bg-2);
}
.prose figure{margin:1.6em 0}
.prose figcaption,.prose .caption{
  text-align:center;font-size:13px;color:var(--text-3);margin-top:12px;
}
.prose table{
  margin:1.6em 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.prose th{
  background:var(--glass-strong);color:var(--text-1);font-weight:600;
  text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);
}
.prose td{padding:12px 16px;border-bottom:1px solid var(--line-soft)}
.prose tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.prose tbody tr:last-child td{border-bottom:0}
.prose pre{
  background:#08161F;border:1px solid var(--line);border-radius:10px;
  padding:18px;overflow-x:auto;margin:1.6em 0;
  font-family:var(--mono);font-size:13.5px;line-height:1.7;color:var(--text-1);
}
.prose code{font-family:var(--mono);font-size:.94em}
.prose p code,.prose li code{
  background:rgba(31,162,184,.12);color:#8AD9E6;
  padding:2px 6px;border-radius:4px;
}
.prose a{color:var(--primary);border-bottom:1px solid rgba(31,162,184,.4)}
.prose a:hover{color:#5AC7D9}
.empty-state{
  text-align:center;padding:32px 12px;
}
.empty-state .icon{
  width:60px;height:60px;margin:0 auto 18px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-2);border:1px solid var(--line);
}
.empty-state .icon svg{width:26px;height:26px;stroke:var(--text-3);fill:none}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-3);margin-bottom:22px}

/* ---------- 标签 ---------- */
.tag-row{
  max-width:760px;margin:28px auto 0;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.tag-row .label{font-size:13px;color:var(--text-3);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 13px;border-radius:var(--radius-badge);
  font-size:12.5px;letter-spacing:.03em;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);color:var(--text-2);
  transition:border-color .16s ease,color .16s ease,background .16s ease;
}
.tag:hover{border-color:rgba(31,162,184,.5);color:var(--text-1);background:var(--primary-soft)}

/* ---------- 翻页 ---------- */
.pager{
  max-width:760px;margin:36px auto 0;
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.pager a{
  display:flex;align-items:center;gap:12px;
  padding:18px 20px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);
  transition:transform .16s ease,border-color .16s ease,background .16s ease;
}
.pager a:hover{transform:translateY(-2px);border-color:rgba(31,162,184,.45);background:rgba(255,255,255,.07)}
.pager .arrow{width:32px;height:32px;border-radius:9px;background:var(--bg-2);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pager .arrow svg{width:15px;height:15px;stroke:var(--primary);fill:none;stroke-width:1.8}
.pager .txt{display:flex;flex-direction:column;gap:3px;min-width:0}
.pager .txt small{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.pager .txt strong{font-size:14.5px;color:var(--text-1);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pager .next{justify-content:flex-end;text-align:right}

/* ---------- 相关内容卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .12s ease-out,border-color .12s ease-out,box-shadow .12s ease-out,background .12s ease-out;
  box-shadow:inset 0 1px 0 var(--highlight);
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,162,184,.45);
  background:rgba(255,255,255,.07);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.26),0 0 40px rgba(31,162,184,.14);
}
.card-media{position:relative;aspect-ratio:16/9;background:var(--bg-2);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line-soft);
  font-size:12.5px;color:var(--text-3);
}
.card-foot .num{font-family:var(--mono)}
.card-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--primary)}
.card-foot .go svg{width:14px;height:14px;stroke:var(--primary);fill:none;stroke-width:1.8;transition:transform .16s ease}
.card:hover .card-foot .go svg{transform:translateX(3px)}

/* ---------- 底部返回 ---------- */
.back-bar{
  margin-top:44px;display:flex;flex-wrap:wrap;justify-content:center;gap:14px;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-panel);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 var(--highlight);
  padding:48px 44px;
  display:grid;grid-template-columns:1.25fr 1fr;gap:40px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  opacity:.14;pointer-events:none;
}
.cta-band > *{position:relative}
.cta-band h2{font-size:30px;line-height:1.35;margin-bottom:14px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:13px;color:var(--text-2)}
.field input,.field textarea{
  width:100%;background:#0A1B26;
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-input);
  padding:12px 14px;font-size:14.5px;color:var(--text-1);
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px var(--primary-soft);
}
.form-panel{
  background:rgba(10,27,38,.6);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:12px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--section);
  border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(12,32,48,.5),rgba(7,20,28,.95));
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{font-size:14px;color:var(--text-3);margin-top:18px;max-width:34ch;line-height:1.8}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-3);transition:color .16s ease,padding-left .16s ease}
.footer-col ul a:hover{color:var(--primary)}
.footer-col p{font-size:14px;color:var(--text-3);margin-bottom:8px}
.footer-col .domain{font-family:var(--mono);font-size:13px;color:var(--text-2);letter-spacing:.02em}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- 移动端底部 Tab ---------- */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(9,24,34,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar ul{display:flex;align-items:stretch}
.tabbar li{flex:1}
.tabbar a{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  height:60px;font-size:10px;color:var(--text-3);
  transition:color .16s ease;
}
.tabbar a svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tabbar a:hover{color:var(--text-2)}
.tabbar a.is-active{color:var(--primary)}
.tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:0 0 2px 2px;background:var(--primary);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--section:88px}
  .article-head h1{font-size:40px}
}
@media (max-width:991px){
  :root{--section:80px}
  .container{padding:0 24px}
  .nav-menu{display:none}
  .nav-actions{margin-left:auto}
  .tabbar{display:block}
  body{padding-bottom:76px}
  .article-hero .hero-bg{inset:0 0 40%}
  .article-head h1{font-size:34px}
  .prose-wrap{padding:32px 26px}
  .cta-band{grid-template-columns:1fr;padding:36px 26px;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  :root{--section:56px}
  .container{padding:0 18px}
  .brand-text strong{font-size:15px}
  .nav-inner{gap:14px}
  .article-head h1{font-size:29px;line-height:1.3}
  .article-lead{font-size:15.5px}
  .section-head h2{font-size:24px}
  .prose h2{font-size:22px}
  .prose h3{font-size:19px}
  .prose-wrap{padding:26px 20px;border-radius:16px}
  .pager{grid-template-columns:1fr}
  .pager .next{justify-content:flex-start;text-align:left}
  .grid-3{grid-template-columns:1fr}
  .cta-band h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:519px){
  .article-head h1{font-size:26px}
  .meta-row{font-size:12.5px;gap:8px 14px}
  .btn{width:100%}
  .nav-actions .btn{width:auto}
  .cta-actions .btn{width:100%}
  .back-bar .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --bg-0:#07141C;
  --bg-1:#0C2030;
  --bg-2:#102A3B;
  --primary:#1FA2B8;
  --primary-strong:#0E7C93;
  --primary-soft:rgba(31,162,184,.14);
  --accent:#E8B45C;
  --text-1:#EAF3F7;
  --text-2:#A8BEC9;
  --text-3:#6C8794;
  --ok:#3ECF8E;
  --warn:#E8B45C;
  --err:#F06A6A;
  --muted:#3B4E5A;
  --glass-bg:rgba(255,255,255,.055);
  --glass-border:rgba(255,255,255,.10);
  --glass-top:rgba(255,255,255,.18);
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.14);
  --r-card:18px;
  --r-panel:20px;
  --r-btn:12px;
  --r-input:10px;
  --r-badge:6px;
  --shadow-soft:0 18px 44px rgba(0,0,0,.35);
  --font:"-apple-system","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(31,162,184,.16), transparent 62%),
    radial-gradient(700px 460px at 92% 8%, rgba(232,180,92,.06), transparent 66%);
}
img{display:block;max-width:100%;height:auto;background:var(--bg-2)}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;border:0;background:none}
button{cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:600;line-height:1.34}
p{margin:0}
svg{display:block}
::selection{background:rgba(31,162,184,.35);color:#EAF3F7}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;position:relative;z-index:1}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:72px;
  display:flex;
  align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,backdrop-filter .2s ease;
}
.site-header.is-scrolled{
  background:rgba(7,20,28,.80);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  width:100%;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--text-1)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  border:2px solid var(--accent);
  border-radius:var(--r-badge);
  display:grid;place-items:center;
  color:var(--accent);
  background:rgba(232,180,92,.08);
  box-shadow:inset 0 0 0 1px rgba(232,180,92,.16);
  transition:box-shadow .18s ease,border-color .18s ease;
}
.brand-mark svg{width:19px;height:19px;stroke:currentColor;stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round}
.brand:hover .brand-mark{border-color:var(--primary);box-shadow:inset 0 0 0 1px rgba(31,162,184,.2),0 0 18px rgba(31,162,184,.28)}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em}
.brand-text span{font-size:11px;letter-spacing:.2em;color:var(--text-2)}

.nav-menu{display:flex;align-items:center;gap:30px}
.nav-menu a{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  transition:color .16s ease;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:50%;bottom:-2px;
  width:0;height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:translateX(-50%);
  transition:width .18s ease;
}
.nav-menu a:hover{color:var(--text-1)}
.nav-menu a:hover::after{width:12px}
.nav-menu a.is-active{color:var(--text-1);font-weight:600}
.nav-menu a.is-active::after{width:20px}
.nav-actions{display:flex;align-items:center;gap:12px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,border-color .16s ease,color .16s ease,filter .16s ease;
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;stroke:currentColor;stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{
  background:var(--primary);
  color:#06131A;
  box-shadow:0 0 0 1px rgba(31,162,184,.4),0 10px 30px rgba(31,162,184,.25);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(31,162,184,.5),0 10px 44px rgba(31,162,184,.4);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,162,184,.4),0 4px 14px rgba(31,162,184,.22)}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.22);
  color:var(--text-2);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--text-1)}
.btn-ghost:active{background:rgba(255,255,255,.04)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;filter:none}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px;border-radius:10px}

/* ============ 通用 ============ */
.section{padding:104px 0 0}
.section:first-of-type{padding-top:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:32px}
.section-head h2{font-size:32px;letter-spacing:.01em}
.section-head p{font-size:15px;color:var(--text-3);max-width:600px;margin-top:10px}
.eyebrow{
  font-size:11px;
  letter-spacing:.3em;
  color:var(--accent);
  margin-bottom:14px;
  text-transform:none;
}
.eyebrow.plain{color:var(--text-3)}
.lead{font-size:17px;color:var(--text-2);line-height:1.9}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  letter-spacing:.04em;
  border:1px solid rgba(31,162,184,.35);
  background:var(--primary-soft);
  color:#8FD9E5;
}
.badge.warm{border-color:rgba(232,180,92,.4);background:rgba(232,180,92,.1);color:#EFCB8D}
.badge.plain{border-color:var(--line-strong);background:rgba(255,255,255,.04);color:var(--text-2)}

.card{
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 var(--glass-top);
  transition:transform .12s ease-out,border-color .12s ease-out,box-shadow .12s ease-out;
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,162,184,.45);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.26),0 16px 36px rgba(0,0,0,.34);
}

.rule{
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,162,184,.42),rgba(255,255,255,.06),transparent);
  margin:0;
}

/* ============ 页面头 ============ */
.page-head{position:relative;padding:64px 0 0;overflow:hidden}
.page-head::before{
  content:"";
  position:absolute;
  inset:-72px 0 0 0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.2;
  pointer-events:none;
}
.page-head::after{
  content:"";
  position:absolute;
  inset:-72px 0 0 0;
  background:
    linear-gradient(180deg,rgba(7,20,28,.72),rgba(7,20,28,.94) 62%,var(--bg-0) 100%),
    radial-gradient(720px 420px at 8% 10%,rgba(31,162,184,.22),transparent 65%);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--muted)}
.breadcrumb a{color:var(--text-3);transition:color .16s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--text-2)}

.head-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;padding-bottom:56px}
.head-grid h1{font-size:46px;line-height:1.22;letter-spacing:.01em}
.head-grid .lead{margin-top:22px;max-width:620px}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.head-media{position:relative}
.head-media img{
  width:100%;
  height:330px;
  object-fit:cover;
  border-radius:var(--r-panel);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-soft);
}
.head-media .stamp{
  position:absolute;
  left:-14px;
  bottom:-14px;
  padding:10px 16px;
  border-radius:var(--r-badge);
  border:1px solid rgba(232,180,92,.45);
  background:rgba(7,20,28,.9);
  color:#EFCB8D;
  font-size:12px;
  letter-spacing:.14em;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

/* ============ 票券信息条 ============ */
.ticket-bar{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 var(--glass-top);
  overflow:hidden;
}
.ticket-item{padding:24px;position:relative}
.ticket-item+.ticket-item{border-left:1px dashed var(--line-strong)}
.ticket-item .num{
  font-family:var(--mono);
  font-size:13px;
  color:var(--primary);
  letter-spacing:.12em;
}
.ticket-item h3{font-size:18px;margin-top:10px}
.ticket-item p{font-size:14px;color:var(--text-3);margin-top:8px;line-height:1.75}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:12px;
  bottom:12px;
  width:2px;
  transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(31,162,184,.75),rgba(31,162,184,.18) 70%,transparent);
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
  padding:34px 0;
}
.tl-item::before{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--primary);
  transform:translate(-50%,-50%);
  box-shadow:0 0 0 5px rgba(31,162,184,.16),0 0 20px rgba(31,162,184,.55);
  z-index:2;
}
.tl-media img{
  width:100%;
  height:262px;
  object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--glass-border);
  background:var(--bg-2);
  box-shadow:var(--shadow-soft);
}
.tl-body .step-no{
  font-size:11px;
  letter-spacing:.3em;
  color:var(--accent);
}
.tl-body h3{font-size:22px;margin:12px 0 14px}
.tl-body p{font-size:15px;color:var(--text-2);margin-bottom:12px}
.tl-body .points{margin-top:16px;display:grid;gap:0}
.tl-body .points li{
  position:relative;
  padding:10px 0 10px 20px;
  font-size:14px;
  color:var(--text-2);
  border-top:1px solid var(--line);
}
.tl-body .points li::before{
  content:"";
  position:absolute;
  left:0;top:19px;
  width:6px;height:1px;
  background:var(--primary);
}
.tl-item.reverse .tl-media{order:2}
.tl-item.reverse .tl-body{order:1}

/* ============ 提示框 ============ */
.notice{
  border-left:3px solid var(--primary);
  border-radius:0 14px 14px 0;
  background:rgba(31,162,184,.08);
  padding:26px 30px;
}
.notice h3{font-size:19px;margin-bottom:14px}
.notice ul{display:grid;gap:12px}
.notice li{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:12px;
  font-size:15px;
  color:var(--text-2);
}
.notice li span.mark{
  font-family:var(--mono);
  color:var(--warn);
  font-size:13px;
  line-height:1.9;
}

/* ============ 问答行 ============ */
.qa-list{border-top:1px solid var(--line)}
.qa-row{
  display:grid;
  grid-template-columns:300px 1fr;
  gap:36px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.qa-row dt{font-size:17px;color:var(--text-1);font-weight:600;line-height:1.6}
.qa-row dd{margin:0;font-size:15px;color:var(--text-2)}

/* ============ 交叉入口 ============ */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cross-card{
  padding:26px;
  display:flex;
  flex-direction:column;
  gap:12px;
  min-height:210px;
}
.cross-card h3{font-size:19px}
.cross-card p{font-size:14px;color:var(--text-3);line-height:1.75}
.cross-card .more{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
}
.cross-card .more svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform .16s ease}
.cross-card:hover .more svg{transform:translateX(4px)}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-panel);
  border:1px solid var(--glass-border);
  background:var(--bg-1);
  padding:44px 40px;
  display:grid;
  grid-template-columns:1.5fr auto;
  gap:36px;
  align-items:center;
  box-shadow:inset 0 1px 0 var(--glass-top);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  opacity:.16;
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(560px 320px at 6% 0%,rgba(31,162,184,.24),transparent 62%);
  pointer-events:none;
}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{font-size:30px;line-height:1.35}
.cta-band p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:104px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,32,48,.55),rgba(7,20,28,.96));
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:32px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{font-size:14px;color:var(--text-3);margin-top:18px;max-width:320px;line-height:1.8}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:18px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:11px}
.footer-col li a{font-size:14px;color:var(--text-3);transition:color .16s ease}
.footer-col li a:hover{color:var(--primary)}
.footer-col p{font-size:14px;color:var(--text-3);margin-bottom:10px}
.footer-col .domain{font-family:var(--mono);font-size:13px;color:var(--text-2);margin-top:14px;letter-spacing:.04em}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding-top:22px;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 移动底部 Tab ============ */
.mobile-tab{display:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .head-grid h1{font-size:40px}
  .tl-item{gap:44px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .nav-menu{display:none}
  .section{padding-top:80px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
  .section-head h2{font-size:26px}
  .head-grid{grid-template-columns:1fr;gap:34px}
  .head-grid h1{font-size:32px}
  .head-media img{height:260px}
  .head-media .stamp{left:12px;bottom:12px}
  .ticket-bar{grid-template-columns:1fr}
  .ticket-item+.ticket-item{border-left:0;border-top:1px dashed var(--line-strong)}
  .timeline::before{left:7px}
  .tl-item{grid-template-columns:1fr;gap:22px;padding:26px 0 26px 34px}
  .tl-item::before{left:7px;top:38px;transform:translate(-50%,0)}
  .tl-item.reverse .tl-media{order:0}
  .tl-item.reverse .tl-body{order:0}
  .tl-media img{height:220px}
  .qa-row{grid-template-columns:1fr;gap:10px}
  .cross-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:34px 26px}
  .cta-band h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:80px}
  body{padding-bottom:76px}
  .mobile-tab{
    display:flex;
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    height:calc(60px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(7,20,28,.88);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-top:1px solid var(--glass-border);
  }
  .mobile-tab a{
    position:relative;
    flex:1;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:3px;
    font-size:10px;
    color:var(--text-3);
    transition:color .16s ease;
  }
  .mobile-tab a svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round}
  .mobile-tab a.is-active{color:var(--primary)}
  .mobile-tab a.is-active::before{
    content:"";
    position:absolute;
    top:0;left:50%;
    width:26px;height:2px;
    transform:translateX(-50%);
    background:var(--primary);
    border-radius:0 0 2px 2px;
  }
  .mobile-tab a:active{background:rgba(255,255,255,.04)}
}
@media (max-width:767px){
  .head-grid h1{font-size:30px;line-height:1.3}
  .head-grid .lead{font-size:15px}
  .tl-body h3{font-size:19px}
  .qa-row dt{font-size:16px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (max-width:575px){
  .container{padding:0 18px}
  .brand-text strong{font-size:15px}
  .brand-text span{font-size:10px;letter-spacing:.16em}
  .section{padding-top:56px}
  .section-head h2{font-size:24px}
  .page-head{padding-top:44px}
  .head-media img{height:210px}
  .tl-media img{height:186px}
  .notice{padding:22px 20px}
  .footer-grid{grid-template-columns:1fr}
  .nav-actions .btn{padding:0 14px;font-size:13px}
}

/* roulang page: category3 */
:root{
  --bg-0:#07141C;
  --bg-1:#0C2030;
  --bg-2:#102A3B;
  --primary:#1FA2B8;
  --primary-strong:#0E7C93;
  --primary-soft:rgba(31,162,184,.14);
  --accent:#E8B45C;
  --text-1:#EAF3F7;
  --text-2:#A8BEC9;
  --text-3:#6C8794;
  --ok:#3ECF8E;
  --warn:#E8B45C;
  --err:#F06A6A;
  --off:#3B4E5A;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.07);
  --glass:rgba(255,255,255,.055);
  --r-card:18px;
  --r-panel:20px;
  --r-btn:12px;
  --r-input:10px;
  --r-badge:6px;
  --glow:0 0 0 1px rgba(31,162,184,.40), 0 10px 30px rgba(31,162,184,.25);
  --shadow-card:0 1px 0 rgba(255,255,255,.10) inset, 0 18px 40px rgba(3,10,15,.45);
  --font:-apple-system,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Courier New",monospace;
  --sec:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;background:var(--bg-2)}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit;margin:0}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:600;line-height:1.35}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
strong{color:var(--text-1);font-weight:600}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.section{padding:var(--sec) 0}
.section-tight{padding:72px 0}
.section-head{margin-bottom:32px;max-width:760px}
.section-head h2{font-size:32px;line-height:1.35}
.section-head p{margin-top:14px;color:var(--text-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;color:var(--accent);
  border:1px solid rgba(232,180,92,.35);border-radius:var(--r-badge);
  padding:4px 10px;margin-bottom:16px;
}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,20,28,.72);
  border-bottom:1px solid transparent;
  transition:background .24s ease, border-color .24s ease, backdrop-filter .24s ease;
}
.site-header.is-scrolled{
  background:rgba(7,20,28,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:rgba(255,255,255,.08);
}
.nav-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:6px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  border:2px solid rgba(232,180,92,.65);
  background:linear-gradient(180deg, rgba(232,180,92,.14), rgba(232,180,92,.03));
}
.brand-mark svg{width:20px;height:20px;stroke:var(--accent);fill:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;color:var(--text-1);letter-spacing:.02em}
.brand-text span{font-size:11px;letter-spacing:.2em;color:var(--text-2)}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu a{
  position:relative;display:inline-block;padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);transition:color .16s ease, background .16s ease;
}
.nav-menu a:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-menu a.is-active{color:var(--primary)}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  width:auto;background:var(--primary);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease, box-shadow .16s ease, filter .16s ease,
             background .16s ease, border-color .16s ease, color .16s ease;
}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--primary);color:#06131A;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(31,162,184,.45),0 14px 44px rgba(31,162,184,.34)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,162,184,.35),0 6px 16px rgba(31,162,184,.22)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.22);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--primary);color:var(--text-1);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn-block{width:100%}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:22px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--off)}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current="page"]{color:var(--text-2)}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  padding:40px 0 56px;
  background:
    radial-gradient(620px 320px at 12% 0%, rgba(31,162,184,.20), transparent 70%),
    linear-gradient(180deg, rgba(7,20,28,.86), rgba(7,20,28,.97)),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line-soft);
}
.page-hero h1{font-size:46px;line-height:1.22;max-width:900px}
.page-hero .lead{margin-top:18px;max-width:720px;font-size:17px;color:var(--text-2)}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.04em;color:var(--text-2);
  border:1px solid var(--line);border-radius:var(--r-badge);
  background:var(--glass);padding:5px 10px;
}
.chip.is-accent{color:var(--accent);border-color:rgba(232,180,92,.35)}
.pattern-line{
  height:1px;margin-top:44px;border:0;
  background:linear-gradient(90deg, transparent, rgba(31,162,184,.45), rgba(232,180,92,.28), transparent);
  opacity:.7;
}

/* ---------- 两栏主体 ---------- */
.faq-layout{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
.faq-column h2{font-size:28px;margin-bottom:8px}
.faq-column .faq-intro{color:var(--text-3);font-size:14px;margin-bottom:24px}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  border:1px solid var(--line);border-radius:14px;background:var(--glass);
  box-shadow:0 1px 0 rgba(255,255,255,.10) inset;
  transition:border-color .18s ease, transform .18s ease, background .18s ease;
}
.faq-item:hover{border-color:rgba(31,162,184,.40)}
.faq-item[open]{border-color:rgba(31,162,184,.45);background:rgba(255,255,255,.07)}
.faq-item summary{
  list-style:none;cursor:pointer;
  min-height:56px;padding:18px 56px 18px 20px;position:relative;
  color:var(--text-1);font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:20px;top:50%;width:14px;height:14px;
  margin-top:-7px;background:
    linear-gradient(var(--primary),var(--primary)) center/14px 1.6px no-repeat,
    linear-gradient(var(--primary),var(--primary)) center/1.6px 14px no-repeat;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{
  max-width:720px;padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--text-2);
}
.faq-body p{margin:0 0 .9em}
.faq-body p:last-child{margin-bottom:0}
.faq-tagline{font-size:13px;color:var(--text-3);margin-top:12px}

/* ---------- 右侧粘性卡 ---------- */
.side-card{
  position:sticky;top:96px;
  border:1px solid var(--line);border-radius:var(--r-panel);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 1px 0 rgba(255,255,255,.18) inset, 0 20px 44px rgba(3,10,15,.45);
  padding:24px;
}
.side-card h3{font-size:19px;margin-bottom:6px}
.side-card .side-sub{font-size:13px;color:var(--text-3);margin-bottom:18px}
.side-links{display:flex;flex-direction:column;border-top:1px solid var(--line-soft)}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 2px;border-bottom:1px solid var(--line-soft);
  font-size:15px;color:var(--text-1);transition:color .16s ease, padding-left .16s ease;
}
.side-links a:hover{color:var(--primary);padding-left:6px}
.side-links a span{color:var(--text-3);font-size:12px;letter-spacing:.04em}
.side-links .arrow{stroke:var(--text-3);width:16px;height:16px;fill:none;flex-shrink:0}
.side-links a:hover .arrow{stroke:var(--primary)}
.side-actions{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.side-note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);
}

/* ---------- 交叉分类 ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cross-card{
  display:flex;flex-direction:column;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--glass);box-shadow:0 1px 0 rgba(255,255,255,.10) inset;
  transition:transform .12s ease-out, border-color .12s ease-out, box-shadow .12s ease-out;
}
.cross-card:hover{
  transform:translateY(-2px);border-color:rgba(31,162,184,.45);
  box-shadow:0 1px 0 rgba(255,255,255,.18) inset, 0 18px 36px rgba(3,10,15,.5);
}
.cross-figure{aspect-ratio:16/9;background:var(--bg-2);overflow:hidden}
.cross-figure img{width:100%;height:100%;object-fit:cover}
.cross-body{padding:24px}
.cross-body h3{font-size:19px;margin-bottom:10px}
.cross-body p{font-size:14px;color:var(--text-2);margin-bottom:18px}
.cross-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary);
}
.cross-link svg{width:16px;height:16px;stroke:currentColor;fill:none;transition:transform .16s ease}
.cross-card:hover .cross-link svg{transform:translateX(4px)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-panel);
  background:
    radial-gradient(520px 260px at 88% 0%, rgba(31,162,184,.20), transparent 72%),
    linear-gradient(180deg, rgba(16,42,59,.92), rgba(12,32,48,.94)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding:44px;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.cta-band h2{font-size:30px;margin-bottom:12px}
.cta-band p{max-width:620px;color:var(--text-2)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sec);
  border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg, rgba(12,32,48,.72), rgba(7,20,28,1));
  padding:64px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--text-3);max-width:320px}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-3);transition:color .16s ease}
.footer-col a:hover{color:var(--primary)}
.footer-col p{font-size:14px;color:var(--text-3);margin-bottom:8px}
.footer-col .domain{font-family:var(--mono);color:var(--text-2);letter-spacing:.02em}
.site-footer .brand-mark{border-color:rgba(232,180,92,.5)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{display:none}

@media (max-width:1199px){
  .page-hero h1{font-size:40px}
}
@media (max-width:991px){
  :root{--sec:80px}
  .container{padding:0 24px}
  .nav-menu{display:none}
  .nav-actions .btn{display:none}
  .page-hero{padding:28px 0 44px}
  .page-hero h1{font-size:32px}
  .faq-layout{grid-template-columns:1fr}
  .side-card{position:static;order:2}
  .cross-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  body{padding-bottom:76px}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
    height:calc(60px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(7,20,28,.92);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-top:1px solid rgba(255,255,255,.10);
  }
  .mobile-tab a{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
    font-size:10px;color:var(--text-3);position:relative;transition:color .16s ease;
  }
  .mobile-tab svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6}
  .mobile-tab a.is-active{color:var(--primary)}
  .mobile-tab a.is-active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:2px;background:var(--primary);border-radius:0 0 2px 2px;
  }
}
@media (max-width:767px){
  .page-hero h1{font-size:28px}
  .section-head h2{font-size:24px}
  .cross-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:24px}
}
@media (max-width:519px){
  .container{padding:0 18px}
  .page-hero h1{font-size:26px}
  .page-hero .lead{font-size:15px}
  .faq-item summary{font-size:15px;padding-right:48px}
  .cta-band{padding:24px}
  .btn{width:100%}
  .cta-actions{flex-direction:column}
  .side-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --bg-0:#07141C;
  --bg-1:#0C2030;
  --bg-2:#102A3B;
  --primary:#1FA2B8;
  --primary-strong:#0E7C93;
  --primary-soft:rgba(31,162,184,.14);
  --accent:#E8B45C;
  --text-1:#EAF3F7;
  --text-2:#A8BEC9;
  --text-3:#6C8794;
  --ok:#3ECF8E;
  --err:#F06A6A;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.07);
  --glass:rgba(255,255,255,.055);
  --r-card:18px;
  --r-panel:20px;
  --r-btn:12px;
  --r-input:10px;
  --r-badge:6px;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;background:var(--bg-2)}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit;background:none;border:none;margin:0}
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:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding-top:104px}
.section-alt{background:linear-gradient(180deg,rgba(12,32,48,0),rgba(12,32,48,.72) 22%,rgba(12,32,48,0));}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:32px;line-height:1.35;font-weight:700;color:var(--text-1);margin-bottom:14px}
.section-head p{font-size:16px;color:var(--text-2)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,20,28,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  background:rgba(7,20,28,.92);
  border-bottom-color:rgba(255,255,255,.08);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:6px;
  border:2px solid var(--accent);
  display:grid;place-items:center;
  color:var(--accent);
  box-shadow:0 0 0 1px rgba(232,180,92,.14),0 0 22px rgba(232,180,92,.10) inset;
}
.brand-mark svg{width:20px;height:20px;stroke:currentColor;fill:none}
.brand-text strong{display:block;font-size:16px;font-weight:700;color:var(--text-1);letter-spacing:.04em;line-height:1.25}
.brand-text span{display:block;font-size:11px;letter-spacing:.2em;color:var(--text-2);line-height:1.4}
.nav-menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-menu a{position:relative;font-size:15px;color:var(--text-2);padding:6px 2px;transition:color .16s ease}
.nav-menu a:hover{color:var(--text-1)}
.nav-menu a.is-active{color:var(--text-1)}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:0;bottom:-3px;width:18px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease,color .16s ease,filter .16s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px}
.btn-primary{
  background:var(--primary);color:#06131A;
  box-shadow:0 0 0 1px rgba(31,162,184,.4),0 10px 30px rgba(31,162,184,.25);
}
.btn-primary:hover{
  filter:brightness(1.08);transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(31,162,184,.5),0 10px 44px rgba(31,162,184,.4);
}
.btn-primary:active{
  transform:translateY(1px);
  box-shadow:0 0 0 1px rgba(31,162,184,.4),0 4px 12px rgba(31,162,184,.2);
}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.22);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--primary);color:var(--text-1)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

/* ============ 页面头 ============ */
.page-head{
  position:relative;
  padding:76px 0 8px;
  text-align:center;
  background:
    radial-gradient(900px 400px at 50% -12%,rgba(31,162,184,.18),transparent 70%),
    var(--bg-0);
}
.page-head-inner{max-width:840px;margin:0 auto}
.breadcrumb ol{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--text-3);opacity:.6}
.breadcrumb a{color:var(--text-3);transition:color .16s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current="page"]{color:var(--text-2)}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;
  color:var(--primary);border:1px solid rgba(31,162,184,.35);
  background:var(--primary-soft);
  border-radius:var(--r-badge);padding:4px 12px;margin-bottom:20px;
}
.page-head h1{
  font-size:46px;line-height:1.22;font-weight:700;color:var(--text-1);
  margin-bottom:20px;
}
.page-head-lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:720px;margin:0 auto}
.cloud-divider{display:flex;align-items:center;gap:16px;margin-top:44px;opacity:.6}
.cloud-divider::before,.cloud-divider::after{
  content:"";flex:1;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);
}
.cloud-divider svg{width:56px;height:14px;stroke:rgba(31,162,184,.6);fill:none;stroke-width:1.4}

/* ============ 对照区 ============ */
.compare-wrap{display:grid;grid-template-columns:260px minmax(0,1fr);gap:48px;align-items:start}
.toc{
  position:sticky;top:96px;align-self:start;
  background:var(--glass);
  border:1px solid var(--line);
  border-top-color:rgba(255,255,255,.18);
  border-radius:var(--r-panel);
  padding:22px;
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.toc-title{font-size:12px;letter-spacing:.16em;color:var(--text-3);margin-bottom:14px}
.toc ol{display:grid;gap:2px}
.toc a{
  display:block;font-size:14px;line-height:1.6;padding:8px 10px;
  border-radius:8px;border-left:2px solid transparent;
  color:var(--text-2);transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.toc a:hover,.toc a.is-current{background:var(--primary-soft);color:var(--text-1);border-left-color:var(--primary)}
.toc-cta{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:13px;font-weight:600;color:var(--primary);
}
.toc-cta svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.6}
.toc-cta:hover{color:var(--text-1)}

.compare-group{margin-bottom:56px;scroll-margin-top:96px}
.compare-group:last-child{margin-bottom:0}
.compare-group h3{
  position:relative;font-size:22px;line-height:1.5;font-weight:600;
  color:var(--text-1);padding-left:16px;margin-bottom:10px;
}
.compare-group h3::before{
  content:"";position:absolute;left:0;top:.5em;width:4px;height:16px;
  border-radius:2px;background:var(--primary);
}
.group-desc{font-size:15px;color:var(--text-3);padding-left:16px;margin-bottom:18px}
.compare-list{border-top:1px solid var(--line-soft)}
.compare-row{
  display:grid;grid-template-columns:1fr 1fr;gap:28px;
  padding:22px 0;border-bottom:1px solid var(--line-soft);
}
.col{min-width:0}
.col-tag{
  display:inline-block;font-size:11px;letter-spacing:.08em;
  padding:3px 9px;border-radius:var(--r-badge);margin-bottom:10px;
}
.col-q .col-tag{background:rgba(255,255,255,.06);color:var(--text-3);border:1px solid var(--line)}
.col-a .col-tag{background:var(--primary-soft);color:var(--primary);border:1px solid rgba(31,162,184,.32)}
.col p{font-size:15px;line-height:1.8;color:var(--text-2)}
.col-a{border-left:1px solid rgba(31,162,184,.3);padding-left:26px}
.col-a p{color:var(--text-1)}

/* ============ 注意事项 ============ */
.notice-wrap{display:grid;grid-template-columns:minmax(0,1fr) 420px;gap:56px;align-items:center}
.notice-text h2{font-size:32px;line-height:1.35;font-weight:700;color:var(--text-1);margin-bottom:14px}
.notice-text > p{font-size:16px;margin-bottom:26px}
.badge-group{display:flex;flex-wrap:wrap;gap:10px}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;line-height:1.6;padding:7px 13px;
  border-radius:var(--r-badge);
  background:var(--glass);border:1px solid var(--line);
  color:var(--text-2);transition:border-color .16s ease,color .16s ease,transform .16s ease;
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0}
.badge:hover{border-color:rgba(31,162,184,.45);color:var(--text-1);transform:translateY(-1px)}
.notice-figure{margin:0;position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--bg-2)}
.notice-figure img{width:100%;height:280px;object-fit:cover;opacity:.9}
.notice-figure figcaption{
  padding:12px 16px;font-size:13px;color:var(--text-3);
  border-top:1px solid var(--line);background:rgba(7,20,28,.6);
}

/* ============ 数据带 ============ */
.stat-band{
  display:grid;grid-template-columns:repeat(3,1fr);
  border:1px solid var(--line);border-radius:var(--r-panel);overflow:hidden;
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.stat{padding:30px 26px;border-right:1px solid var(--line-soft);display:grid;gap:8px}
.stat:last-child{border-right:none}
.stat strong{font-family:var(--mono);font-size:32px;line-height:1;color:var(--primary);font-weight:600}
.stat span{font-size:13px;line-height:1.7;color:var(--text-2)}
.stat em{font-style:normal;color:var(--text-3);font-size:12px;letter-spacing:.06em}

/* ============ CTA ============ */
.cta-band{padding-top:104px}
.cta-inner{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  border:1px solid var(--line);
  background:
    linear-gradient(115deg,rgba(7,20,28,.94) 12%,rgba(7,20,28,.78) 62%,rgba(12,32,48,.86)),
    url(/assets/images/backpic/back-3.webp) center/cover no-repeat;
  padding:44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:32px;line-height:1.35;font-weight:700;color:var(--text-1);margin-bottom:12px}
.cta-inner p{font-size:16px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:104px;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding-top:64px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);letter-spacing:.06em;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col li a{font-size:14px;color:var(--text-2);transition:color .16s ease}
.footer-col li a:hover{color:var(--primary)}
.footer-col p{font-size:14px;line-height:1.8;color:var(--text-2);margin-bottom:6px}
.footer-col .domain{font-family:var(--mono);font-size:13px;color:var(--text-3);letter-spacing:.02em}
.footer-bottom{
  margin-top:52px;padding:22px 0 26px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{display:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .compare-wrap{grid-template-columns:230px minmax(0,1fr);gap:36px}
  .notice-wrap{grid-template-columns:minmax(0,1fr) 360px;gap:40px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .section{padding-top:80px}
  .cta-band{padding-top:80px}
  .site-footer{margin-top:80px}
  .nav-menu{display:none}
  .page-head{padding:56px 0 4px}
  .page-head h1{font-size:36px}
  .compare-wrap{grid-template-columns:1fr;gap:32px}
  .toc{position:static;top:auto}
  .toc ol{grid-template-columns:repeat(2,minmax(0,1fr))}
  .notice-wrap{grid-template-columns:1fr;gap:32px}
  .notice-figure img{height:240px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{padding:34px}
  .mobile-tab{
    display:grid;grid-template-columns:repeat(5,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(9,24,33,.94);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-top:1px solid rgba(255,255,255,.08);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-tab a{
    position:relative;display:grid;justify-items:center;align-content:center;gap:3px;
    padding:9px 0 8px;font-size:10px;letter-spacing:.02em;
    color:var(--text-3);min-height:60px;transition:color .16s ease;
  }
  .mobile-tab a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6}
  .mobile-tab a.is-active{color:var(--primary)}
  .mobile-tab a.is-active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:24px;height:2px;border-radius:0 0 2px 2px;background:var(--primary);
  }
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .page-head h1{font-size:32px}
  .page-head-lead{font-size:16px}
  .section-head h2,.notice-text h2,.cta-inner h2{font-size:24px}
  .compare-group h3{font-size:19px}
  .compare-row{grid-template-columns:1fr;gap:16px;padding:20px 0}
  .col-a{border-left:none;border-top:1px solid rgba(31,162,184,.3);padding-left:0;padding-top:16px}
  .stat-band{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line-soft)}
  .stat:last-child{border-bottom:none}
  .toc ol{grid-template-columns:1fr}
  .cta-inner{padding:26px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:575px){
  .container{padding:0 18px}
  .page-head{padding:40px 0 0}
  .page-head h1{font-size:30px;line-height:1.3}
  .nav-inner{height:64px;gap:16px}
  .nav-actions{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .section{padding-top:56px}
  .section-alt{background:none}
  .cta-band{padding-top:56px}
  .site-footer{margin-top:56px}
  .notice-figure img{height:200px}
}

/* roulang page: category4 */
:root{
  --bg-0:#07141C;
  --bg-1:#0C2030;
  --bg-2:#102A3B;
  --primary:#1FA2B8;
  --primary-strong:#0E7C93;
  --primary-soft:rgba(31,162,184,.14);
  --accent:#E8B45C;
  --text-1:#EAF3F7;
  --text-2:#A8BEC9;
  --text-3:#6C8794;
  --ok:#3ECF8E;
  --warn:#E8B45C;
  --err:#F06A6A;
  --disabled:#3B4E5A;
  --glass:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.07);
  --radius-card:18px;
  --radius-panel:20px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-badge:6px;
  --shadow-card:0 10px 30px rgba(3,11,17,.45);
  --shadow-panel:0 18px 48px rgba(3,11,17,.5);
  --glow:0 0 0 1px rgba(31,162,184,.4), 0 10px 30px rgba(31,162,184,.25);
  --container:1200px;
  --font-sans:-apple-system,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(760px 420px at 12% -6%, rgba(31,162,184,.16), transparent 68%),
    radial-gradient(520px 360px at 92% 8%, rgba(232,180,92,.07), transparent 70%);
  pointer-events:none;
  z-index:0;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:650;letter-spacing:.01em;}
h1{font-size:46px;line-height:1.22;}
h2{font-size:32px;line-height:1.35;}
h3{font-size:22px;line-height:1.5;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
svg{display:block;}
::selection{background:rgba(31,162,184,.35);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,20,28,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(7,20,28,.88);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 12px 34px rgba(2,9,14,.5);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:6px;
  border:2px solid var(--accent);
  background:linear-gradient(140deg,rgba(31,162,184,.22),rgba(31,162,184,.05));
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;stroke:var(--primary);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{
  color:var(--text-1);
  font-size:17px;
  font-weight:700;
  letter-spacing:.04em;
}
.brand-text span{
  color:var(--text-2);
  font-size:11px;
  letter-spacing:.2em;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  padding:9px 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--text-2);
  transition:color .16s ease,background .16s ease;
}
.nav-menu a:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-menu a.is-active{color:var(--text-1);font-weight:600;}
.nav-menu a.is-active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:3px;
  height:2px;
  width:4px;
  border-radius:2px;
  background:var(--primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-weight:600;
  font-size:15px;
  letter-spacing:.02em;
  transition:transform .16s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease,opacity .18s ease;
}
.btn-primary{
  background:var(--primary);
  color:#06131A;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  background:#25B0C7;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(31,162,184,.5),0 14px 44px rgba(31,162,184,.32);
}
.btn-primary:active{
  transform:translateY(1px);
  box-shadow:0 0 0 1px rgba(31,162,184,.45),0 6px 16px rgba(31,162,184,.22);
}
.btn-ghost{
  background:transparent;
  color:var(--text-2);
  border:1px solid rgba(255,255,255,.22);
}
.btn-ghost:hover{
  color:var(--text-1);
  border-color:var(--primary);
  background:rgba(31,162,184,.08);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn.is-disabled,.btn[disabled]{
  opacity:.45;
  cursor:not-allowed;
  box-shadow:none;
  transform:none;
}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border-radius:var(--radius-badge);
  background:var(--primary-soft);
  border:1px solid rgba(31,162,184,.28);
  color:#7FD4E2;
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.7;
}
.badge-accent{
  background:rgba(232,180,92,.12);
  border-color:rgba(232,180,92,.32);
  color:var(--accent);
}
.badge-plain{
  background:rgba(255,255,255,.05);
  border-color:var(--line);
  color:var(--text-2);
}

/* ============ 页面头 ============ */
.page-head{
  position:relative;
  overflow:hidden;
  padding:64px 0 56px;
  background:linear-gradient(180deg,rgba(12,32,48,.9),rgba(7,20,28,.96));
  border-bottom:1px solid var(--line-soft);
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  opacity:.28;
  z-index:0;
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(110deg,rgba(7,20,28,.94) 0%,rgba(7,20,28,.72) 52%,rgba(7,20,28,.5) 100%);
  z-index:0;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--text-3);
  opacity:.6;
}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb [aria-current="page"]{color:var(--text-2);}
.head-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.head-copy h1{margin-bottom:18px;}
.head-copy .lead{
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  max-width:620px;
  margin-bottom:26px;
}
.head-media{
  position:relative;
  border-radius:var(--radius-panel);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--shadow-panel);
}
.head-media img{
  width:100%;
  aspect-ratio:4/3;
  height:auto;
  object-fit:cover;
}
.head-media .media-tag{
  position:absolute;
  left:16px;
  bottom:16px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-badge);
  background:rgba(7,20,28,.78);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  font-size:12px;
  color:var(--text-1);
  letter-spacing:.04em;
}

/* ============ 指标条 ============ */
.metric-bar{
  margin-top:44px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-radius:var(--radius-panel);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18);
  overflow:hidden;
}
.metric{
  padding:24px 28px;
  border-left:1px solid var(--line-soft);
}
.metric:first-child{border-left:0;}
.metric .val{
  display:block;
  font-family:var(--font-mono);
  font-size:32px;
  font-weight:600;
  color:var(--primary);
  line-height:1.2;
  letter-spacing:.02em;
}
.metric .val small{font-size:14px;color:var(--text-2);margin-left:4px;font-weight:400;}
.metric .lbl{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-top:6px;
  letter-spacing:.03em;
}

/* ============ 通用板块 ============ */
.section{padding:104px 0;}
.section-alt{
  background:linear-gradient(180deg,rgba(12,32,48,.72),rgba(7,20,28,.2));
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.section-head{
  max-width:760px;
  margin-bottom:44px;
}
.section-head .eyebrow{
  display:inline-block;
  font-size:11px;
  letter-spacing:.3em;
  color:var(--accent);
  margin-bottom:14px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;}
.section-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:44px;
}
.section-head-row .section-head{margin-bottom:0;}

/* ============ 资源卡片矩阵 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.res-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16);
  overflow:hidden;
  transition:transform .12s ease-out,border-color .12s ease-out,box-shadow .12s ease-out;
}
.res-card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,162,184,.45);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 16px 40px rgba(3,11,17,.5),0 0 0 1px rgba(31,162,184,.18);
}
.card-media{
  background:var(--bg-2);
  position:relative;
}
.card-media img{
  width:100%;
  height:auto;
  aspect-ratio:16/9;
  object-fit:cover;
}
.card-body{
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.card-body h3{
  font-size:19px;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body p{
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line-soft);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.card-foot .num{font-family:var(--font-mono);color:var(--text-3);}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:#7FD4E2;
  font-weight:600;
  font-size:13px;
  transition:gap .16s ease,color .16s ease;
}
.res-card:hover .card-link{gap:10px;color:var(--primary);}
.card-link svg{width:15px;height:15px;stroke:currentColor;stroke-width:1.6;fill:none;}

/* ============ 对比信息带 ============ */
.compare{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-radius:var(--radius-panel);
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
  overflow:hidden;
}
.compare-item{
  padding:32px 28px;
  border-left:1px solid var(--line-soft);
}
.compare-item:first-child{border-left:0;}
.compare-item h3{
  font-size:19px;
  margin-bottom:8px;
}
.compare-item .sub{
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
  display:block;
}
.compare-list li{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:12px 0;
  border-top:1px solid var(--line-soft);
  font-size:14px;
}
.compare-list li:first-child{border-top:0;padding-top:0;}
.compare-list .k{color:var(--text-3);flex-shrink:0;}
.compare-list .v{color:var(--text-1);text-align:right;}
.compare-list .v.mono{font-family:var(--font-mono);font-size:13px;letter-spacing:.02em;}

/* ============ 提示框 ============ */
.note-box{
  margin-top:40px;
  padding:24px 28px;
  border-radius:var(--radius-card);
  background:rgba(31,162,184,.07);
  border:1px solid rgba(31,162,184,.22);
  border-left:4px solid var(--primary);
  display:flex;
  gap:18px;
  align-items:flex-start;
}
.note-box svg{
  width:22px;
  height:22px;
  stroke:var(--primary);
  stroke-width:1.6;
  fill:none;
  flex-shrink:0;
  margin-top:4px;
}
.note-box h3{font-size:17px;margin-bottom:6px;}
.note-box p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ============ 自检步骤列表 ============ */
.step-list{
  border-radius:var(--radius-panel);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
}
.step-item{
  display:grid;
  grid-template-columns:76px 1fr auto;
  gap:20px;
  align-items:center;
  padding:22px 28px;
  border-top:1px solid var(--line-soft);
  transition:background .16s ease;
}
.step-item:first-child{border-top:0;}
.step-item:hover{background:rgba(255,255,255,.03);}
.step-item .idx{
  font-family:var(--font-mono);
  font-size:20px;
  color:var(--primary);
  letter-spacing:.04em;
}
.step-item h3{font-size:17px;font-weight:600;margin-bottom:4px;}
.step-item p{font-size:14px;color:var(--text-2);margin:0;}
.step-item .state{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-3);
  white-space:nowrap;
  font-family:var(--font-mono);
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-panel);
  border:1px solid var(--line);
  background:rgba(16,42,59,.6);
  padding:48px 48px;
  display:grid;
  grid-template-columns:1.2fr auto;
  gap:36px;
  align-items:center;
  box-shadow:var(--shadow-panel);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.16;
  z-index:0;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(500px 260px at 8% 0%,rgba(31,162,184,.22),transparent 70%);
  z-index:0;
}
.cta-band>*{position:relative;z-index:1;}
.cta-band h2{font-size:28px;margin-bottom:10px;}
.cta-band p{color:var(--text-2);font-size:15px;margin:0;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:104px;
  background:linear-gradient(180deg,rgba(12,32,48,.85),rgba(7,20,28,1));
  border-top:1px solid var(--line-soft);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line-soft);
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  color:var(--text-3);
  max-width:300px;
}
.footer-col h4{
  font-size:14px;
  color:var(--text-1);
  letter-spacing:.06em;
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  font-size:14px;
  color:var(--text-3);
  transition:color .16s ease,padding-left .16s ease;
}
.footer-col a:hover{color:var(--primary);padding-left:4px;}
.footer-col p{font-size:13.5px;color:var(--text-3);margin:0 0 8px;}
.footer-col .domain{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--text-2);
  margin-top:12px;
  padding-top:12px;
  border-top:1px solid var(--line-soft);
}
.footer-bottom{
  padding-top:24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  display:none;
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:70;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(7,20,28,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.mobile-tab ul{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  height:60px;
}
.mobile-tab a{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  font-size:10px;
  color:var(--text-3);
  position:relative;
  transition:color .16s ease;
}
.mobile-tab a svg{
  width:21px;
  height:21px;
  stroke:currentColor;
  stroke-width:1.6;
  fill:none;
}
.mobile-tab a.is-active{color:var(--primary);}
.mobile-tab a.is-active::before{
  content:"";
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:26px;
  height:2px;
  border-radius:0 0 2px 2px;
  background:var(--primary);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 24px;}
  h1{font-size:38px;}
  h2{font-size:28px;}
  .card-grid{gap:20px;}
}
@media (max-width:991px){
  .nav-menu,.nav-actions{display:none;}
  .mobile-tab{display:block;}
  body{padding-bottom:76px;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  h3{font-size:20px;}
  .section{padding:80px 0;}
  .page-head{padding:48px 0 40px;}
  .head-grid{grid-template-columns:1fr;gap:32px;}
  .head-media{order:-1;}
  .metric-bar{grid-template-columns:1fr;margin-top:32px;}
  .metric{border-left:0;border-top:1px solid var(--line-soft);padding:18px 22px;}
  .metric:first-child{border-top:0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .compare{grid-template-columns:1fr;}
  .compare-item{border-left:0;border-top:1px solid var(--line-soft);}
  .compare-item:first-child{border-top:0;}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:18px;}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .site-footer{margin-top:80px;padding-top:56px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  h1{font-size:29px;line-height:1.3;}
  h2{font-size:23px;}
  h3{font-size:19px;}
  body{font-size:15.5px;}
  .section{padding:56px 0;}
  .card-grid{grid-template-columns:1fr;}
  .step-item{grid-template-columns:52px 1fr;padding:18px 20px;}
  .step-item .state{grid-column:2;justify-self:start;}
  .head-copy .lead{font-size:15.5px;}
  .brand-text span{letter-spacing:.14em;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}