/* roulang page: index */
:root{
  --ink-900:#061214;
  --ink-800:#0A1B1F;
  --ink-700:#102830;
  --primary:#1FD1C4;
  --primary-hover:#35E6D8;
  --primary-active:#14A99F;
  --accent:#FF9F43;
  --text:#E6F4F3;
  --muted:#93AEB1;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.04);
  --radius-card:18px;
  --radius-panel:24px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 20px 50px -20px rgba(0,0,0,.6);
  --glow:0 0 0 1px rgba(31,209,196,.5),0 12px 30px -10px rgba(31,209,196,.45);
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:132px;-webkit-text-size-adjust:100%}
html body{
  margin:0;
  padding:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
}
body::after{
  content:"";
  position:fixed;
  top:0;
  right:4vw;
  width:220px;
  height:100vh;
  z-index:0;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(31,209,196,.12),rgba(31,209,196,0) 68%);
  filter:blur(46px);
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;text-underline-offset:4px}
a:not(.btn):hover{text-decoration:underline;text-decoration-color:rgba(31,209,196,.6)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
::selection{background:rgba(31,209,196,.28);color:#fff}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

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

.section{position:relative;z-index:1;padding:56px 0}
@media (min-width:1024px){ .section{padding:104px 0} }
.section::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.14),transparent);
}
.section-alt{background:var(--ink-800)}
.section-alt::before{background:linear-gradient(90deg,transparent,rgba(31,209,196,.22),transparent)}

.section-head{max-width:720px;margin-bottom:40px}
.section-eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--primary);
}
.section-title{
  margin-top:12px;
  font-size:clamp(22px,2.6vw,34px);
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.02em;
}
.section-desc{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.8}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  white-space:nowrap;border:1px solid transparent;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
}
.btn:hover{text-decoration:none}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#4BE3D6);
  color:#04211F;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  background:linear-gradient(135deg,var(--primary-hover),#6AF0E4);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(31,209,196,.65),0 18px 40px -12px rgba(31,209,196,.6);
}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--line);
  color:var(--text);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{
  border-color:rgba(31,209,196,.45);
  color:var(--primary-hover);
  transform:translateY(-2px);
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  color:var(--primary);
  background:rgba(31,209,196,.12);
  border:1px solid rgba(31,209,196,.22);
}
.badge-accent{color:var(--accent);background:rgba(255,159,67,.12);border-color:rgba(255,159,67,.26)}

.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.glass-hover:hover{
  transform:translateY(-4px);
  border-color:rgba(31,209,196,.4);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16),0 26px 60px -24px rgba(0,0,0,.78);
}

.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:80;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transition:width .1s linear;
}

/* ---------- header ---------- */
.site-header{position:relative;z-index:60}
.topbar{background:rgba(6,18,20,.6);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
.logo{display:inline-flex;align-items:center;gap:12px}
.logo:hover{text-decoration:none}
.logo-mark{
  position:relative;width:38px;height:38px;flex:0 0 auto;
  border-radius:12px;
  background:linear-gradient(150deg,rgba(31,209,196,.24),rgba(31,209,196,.04));
  border:1px solid rgba(31,209,196,.32);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16);
}
.logo-mark i{position:absolute;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(31,209,196,.8)}
.logo-mark i:nth-child(1){width:7px;height:7px;left:9px;top:9px}
.logo-mark i:nth-child(2){width:5px;height:5px;right:9px;top:14px;opacity:.75}
.logo-mark i:nth-child(3){width:6px;height:6px;left:15px;bottom:9px;opacity:.85}
.logo-mark::after{
  content:"";position:absolute;left:14px;top:14px;width:14px;height:1px;
  background:linear-gradient(90deg,rgba(31,209,196,.9),rgba(31,209,196,.15));
  transform:rotate(12deg);transform-origin:left center;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-weight:800;letter-spacing:-.01em;font-size:17px}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:.24em;color:var(--muted);font-weight:600;font-family:var(--font-mono)}
.topbar-note{display:none;font-size:13px;color:var(--muted)}
.topbar-actions{display:flex;align-items:center;gap:14px}
.topbar-tel{display:none;font-size:13px;color:var(--muted);font-family:var(--font-mono)}
@media (min-width:768px){ .topbar-tel{display:inline} }
@media (min-width:1024px){ .topbar-note{display:inline} }

.navbar{
  position:sticky;top:0;z-index:55;
  background:rgba(6,18,20,.78);
  backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,background .3s ease,box-shadow .3s ease;
}
.navbar.is-stuck{border-bottom-color:var(--line);box-shadow:0 14px 34px -26px rgba(0,0,0,.9)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0}
.nav-list{display:none;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:10px;
  font-size:14.5px;color:var(--muted);
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);text-decoration:none}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(31,209,196,.85);
}
.nav-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  font-size:14px;color:var(--text);
}
.nav-toggle:hover{border-color:rgba(31,209,196,.4)}
@media (min-width:768px){
  .nav-list{display:flex}
  .nav-toggle{display:none}
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:95;
  padding:26px 22px;background:var(--ink-800);
  border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .35s ease;
  display:flex;flex-direction:column;gap:8px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-title{font-weight:700;font-size:15px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--muted)}
.drawer-link{padding:13px 14px;border-radius:12px;font-size:15px;color:var(--muted);border:1px solid transparent}
.drawer-link:hover{background:rgba(255,255,255,.04);color:var(--text);text-decoration:none}
.drawer-link.is-active{color:var(--primary);background:rgba(31,209,196,.08);border-color:rgba(31,209,196,.24)}
.drawer-mask{
  position:fixed;inset:0;z-index:90;background:rgba(0,0,0,.62);
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- hero ---------- */
.hero{position:relative;z-index:1;padding:52px 0 0}
.hero-inner{display:grid;grid-template-columns:1fr;gap:38px;align-items:center}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:54% 46%;gap:56px}
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;color:var(--primary);
  background:rgba(31,209,196,.1);border:1px solid rgba(31,209,196,.22);
  font-family:var(--font-mono);letter-spacing:.12em;
}
.hero-title{
  margin-top:20px;
  font-size:clamp(28px,4.4vw,54px);
  line-height:1.15;font-weight:800;letter-spacing:-.02em;
}
.hero-sub{margin-top:18px;min-height:1px;font-size:17px;color:var(--muted);line-height:1.8;max-width:560px}
.hero-text{margin-top:14px;font-size:15px;color:rgba(147,174,177,.86);line-height:1.85;max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:32px;padding-top:22px;border-top:1px solid var(--line);
}
.hero-tag{display:flex;flex-direction:column;gap:2px}
.hero-tag b{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:17px;color:var(--primary);font-weight:700}
.hero-tag span{font-size:12.5px;color:var(--muted)}
.hero-media{
  position:relative;border-radius:var(--radius-panel);overflow:hidden;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);
}
.hero-media img{width:100%;height:100%;max-height:420px;object-fit:cover;border-radius:var(--radius-panel)}
.hero-chip{
  position:absolute;right:16px;bottom:16px;
  padding:12px 16px;border-radius:14px;
  background:rgba(6,18,20,.78);
  backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:var(--shadow-card);
}
.hero-chip b{display:block;font-size:14px;font-family:var(--font-mono);color:var(--primary)}
.hero-chip span{display:block;font-size:11.5px;color:var(--muted);margin-top:2px}
.hero-status{
  margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;
  padding:14px 18px;border-radius:14px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13px;color:var(--muted);
}
.status-dot{
  width:8px;height:8px;border-radius:50%;background:var(--primary);flex:0 0 auto;
  box-shadow:0 0 0 4px rgba(31,209,196,.16),0 0 12px rgba(31,209,196,.9);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(31,209,196,.16),0 0 12px rgba(31,209,196,.9)}
  50%{box-shadow:0 0 0 8px rgba(31,209,196,.06),0 0 18px rgba(31,209,196,.6)}
}
.status-tags{display:flex;flex-wrap:wrap;gap:10px 20px;font-family:var(--font-mono)}
.status-tags span{color:var(--text)}

/* ---------- anchor bar ---------- */
.anchorbar{
  position:sticky;top:58px;z-index:50;
  margin-top:44px;
  background:rgba(6,18,20,.82);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
@media (max-width:767px){ .anchorbar{top:0} }
.anchor-inner{display:flex;gap:8px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-link{
  padding:8px 16px;border-radius:10px;font-size:14px;color:var(--muted);
  white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.anchor-link:hover{color:var(--text);background:rgba(255,255,255,.05);text-decoration:none}
.anchor-link.is-active{color:var(--primary);background:rgba(31,209,196,.1)}

/* ---------- feature ---------- */
.feature-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){ .feature-grid{grid-template-columns:5fr 7fr;gap:32px} }
.feature-list{display:flex;flex-direction:column}
.feature-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px dashed rgba(255,255,255,.09)}
.feature-item:first-child{padding-top:6px}
.feature-item:last-child{border-bottom:0}
.feature-num{
  flex:0 0 auto;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;color:var(--primary);letter-spacing:.06em;padding-top:4px;
}
.feature-item h3{font-size:18px;font-weight:700;margin-bottom:6px;letter-spacing:-.01em}
.feature-item p{font-size:15px;color:var(--muted);line-height:1.75}
.feature-media{display:flex;flex-direction:column;gap:20px}
.feature-main{
  position:relative;border-radius:var(--radius-panel);overflow:hidden;
  border:1px solid var(--line);min-height:300px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease;
}
.feature-main:hover{transform:translateY(-4px);border-color:rgba(31,209,196,.4)}
.feature-main img{width:100%;height:100%;min-height:300px;object-fit:cover}
.feature-main-cover{
  position:absolute;inset:auto 0 0 0;padding:22px;
  background:linear-gradient(180deg,rgba(6,18,20,0),rgba(6,18,20,.92));
}
.feature-main-cover h3{font-size:19px;font-weight:700}
.feature-main-cover p{margin-top:6px;font-size:14px;color:var(--muted)}
.feature-sub{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){ .feature-sub{grid-template-columns:1fr 1fr} }
.mini-card{
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease;
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(31,209,196,.4)}
.mini-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.mini-card-body{padding:16px 18px 20px}
.mini-card-body h4{font-size:16px;font-weight:700}
.mini-card-body p{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.7}

/* ---------- demo ---------- */
.demo-grid{display:grid;grid-template-columns:1fr;gap:44px;align-items:center}
@media (min-width:1024px){ .demo-grid{grid-template-columns:minmax(280px,360px) 1fr;gap:64px} }
.phone{
  width:100%;max-width:320px;margin:0 auto;padding:12px;
  border-radius:36px;
  background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.02));
  border:1px solid var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18),var(--shadow-card);
}
.phone-screen{
  position:relative;border-radius:26px;overflow:hidden;
  border:1px solid rgba(255,255,255,.10);background:var(--ink-800);
  aspect-ratio:9/17;
}
.phone-screen img{width:100%;height:100%;object-fit:cover}
.phone-bar{
  position:absolute;left:50%;top:10px;transform:translateX(-50%);
  width:70px;height:5px;border-radius:999px;background:rgba(255,255,255,.22);
}
.steps{position:relative;display:grid;grid-template-columns:1fr;gap:26px}
@media (min-width:640px){ .steps{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){
  .steps{grid-template-columns:repeat(4,1fr);gap:22px}
  .steps::before{
    content:"";position:absolute;top:11px;left:12px;right:12px;height:1px;
    background:linear-gradient(90deg,rgba(31,209,196,.55),rgba(31,209,196,.06));
  }
}
.step{position:relative;padding-top:36px}
.step-node{
  position:absolute;top:0;left:0;width:23px;height:23px;border-radius:50%;
  background:var(--ink-900);border:2px solid var(--primary);
  box-shadow:0 0 0 5px rgba(31,209,196,.12),0 0 18px rgba(31,209,196,.55);
}
.step h3{font-size:17px;font-weight:700}
.step p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media (min-width:1024px){ .proof-grid{grid-template-columns:repeat(4,1fr);gap:20px} }
.stat{padding:26px 22px;border-radius:var(--radius-card)}
.stat-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(30px,3.4vw,44px);font-weight:700;line-height:1;
  color:var(--primary);letter-spacing:-.02em;
}
.stat-num small{font-size:14px;color:var(--muted);margin-left:4px;font-weight:600}
.stat-label{margin-top:12px;font-size:14px;color:var(--muted)}
.tagwall{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;padding-top:28px;border-top:1px solid var(--line);
}
.tag{
  padding:8px 16px;border-radius:999px;font-size:13px;color:var(--muted);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag:hover{color:var(--text);border-color:rgba(31,209,196,.4);background:rgba(31,209,196,.06)}
@media (max-width:767px){
  .tagwall{flex-wrap:nowrap;overflow-x:auto;padding-bottom:8px;scrollbar-width:none}
  .tagwall::-webkit-scrollbar{display:none}
  .tag{flex:0 0 auto}
}

/* ---------- price ---------- */
.price-grid{display:grid;grid-template-columns:1fr;gap:22px;align-items:stretch}
@media (min-width:1024px){ .price-grid{grid-template-columns:repeat(3,1fr);gap:24px;align-items:center} }
.price-card{
  position:relative;display:flex;flex-direction:column;gap:18px;
  padding:32px 26px;border-radius:var(--radius-panel);
}
.price-name{font-size:16px;font-weight:700}
.price-value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:36px;font-weight:700;letter-spacing:-.02em;
}
.price-value small{font-size:13px;font-weight:600;color:var(--muted);margin-left:6px}
.price-note{font-size:13px;color:var(--muted);margin-top:-10px}
.price-list{display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--line);padding-top:18px}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--muted);line-height:1.7}
.price-list li::before{content:"✓";color:var(--primary);font-weight:700;flex:0 0 auto}
.price-card .btn{margin-top:auto;width:100%}
.price-card.is-featured{
  background:rgba(31,209,196,.06);
  border-color:rgba(31,209,196,.45);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16),0 0 0 1px rgba(31,209,196,.28),0 30px 70px -30px rgba(31,209,196,.45);
  z-index:2;
}
@media (min-width:1024px){ .price-card.is-featured{transform:scale(1.12)} }
.price-flag{
  position:absolute;top:-13px;left:26px;
  padding:5px 14px;border-radius:999px;
  background:var(--accent);color:#2A1600;font-size:12px;font-weight:700;
  box-shadow:0 10px 24px -12px rgba(255,159,67,.9);
}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass);backdrop-filter:blur(14px);
  overflow:hidden;transition:border-color .25s ease,background .25s ease;
}
.faq-item:hover{border-color:rgba(31,209,196,.3)}
.faq-item.is-open{border-color:rgba(31,209,196,.4);background:rgba(31,209,196,.04)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px;transition:transform .3s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px}
.faq-icon::before{left:0;right:0;top:50%;height:2px;transform:translateY(-50%)}
.faq-icon::after{top:0;bottom:0;left:50%;width:2px;transform:translateX(-50%)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{
  padding:0 24px 22px 26px;margin-left:24px;
  border-left:3px solid transparent;
  color:var(--muted);font-size:15px;line-height:1.85;
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--primary)}

/* ---------- news ---------- */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:34px}
.more-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--primary);font-weight:600;
  padding:8px 14px;border-radius:10px;border:1px solid rgba(31,209,196,.28);
  background:rgba(31,209,196,.07);
  transition:background .2s ease,transform .2s ease;
}
.more-link:hover{background:rgba(31,209,196,.14);transform:translateY(-2px);text-decoration:none}
.news-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:640px){ .news-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .news-grid{grid-template-columns:repeat(3,1fr)} }
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12),var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.news-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,209,196,.4);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16),0 26px 60px -24px rgba(0,0,0,.78);
}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:rgba(255,255,255,.05)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{display:flex;flex-direction:column;gap:12px;padding:20px;flex:1}
.news-title{
  font-size:17px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-title a:hover{color:var(--primary);text-decoration:none}
.news-excerpt{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.news-time{font-family:var(--font-mono);color:var(--accent)}
.news-more{color:var(--primary);font-weight:600}
.news-more:hover{text-decoration:none;color:var(--primary-hover)}
.empty-state{
  grid-column:1/-1;text-align:center;
  padding:56px 24px;border-radius:var(--radius-panel);
  border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.02);
}
.empty-icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:16px;
  display:grid;place-items:center;
  background:rgba(31,209,196,.1);border:1px solid rgba(31,209,196,.26);
  color:var(--primary);font-size:22px;
}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-panel);
  border:1px solid rgba(31,209,196,.28);
  background:linear-gradient(120deg,rgba(31,209,196,.16),rgba(255,255,255,.03) 70%);
  padding:48px 28px;text-align:center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16),var(--shadow-card);
}
@media (min-width:1024px){ .cta-band{padding:64px 56px} }
.cta-band h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:800;letter-spacing:-.02em}
.cta-band p{margin-top:14px;color:var(--muted);font-size:15.5px;max-width:660px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;z-index:1;margin-top:20px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,27,31,.9),rgba(6,18,20,.98));
  padding-top:56px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr} }
.footer-brand p{margin-top:16px;font-size:14px;color:var(--muted);line-height:1.8;max-width:320px}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text);margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:11px}
.footer-list a,.footer-list span{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-list a:hover{color:var(--primary);text-decoration:none}
.footer-bottom{
  margin-top:46px;border-top:1px solid var(--line);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--primary);text-decoration:none}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  opacity:0;pointer-events:none;transform:translateY(14px);
  transition:opacity .35s ease,transform .35s ease;
}
.float-cta.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.float-cta-btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px;border-radius:999px;
  background:linear-gradient(135deg,var(--primary),#4BE3D6);
  color:#04211F;font-weight:700;font-size:15px;
  box-shadow:var(--glow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.float-cta-btn:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,209,196,.7),0 20px 44px -14px rgba(31,209,196,.7);text-decoration:none}
.float-cta-btn svg{width:18px;height:18px;flex:0 0 auto}
@media (max-width:767px){
  .float-cta{
    left:0;right:0;bottom:0;transform:translateY(100%);
    padding:8px 12px;height:56px;display:flex;align-items:center;
    background:rgba(6,18,20,.92);backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
  }
  .float-cta.is-visible{transform:translateY(0)}
  .float-cta-btn{width:100%;justify-content:center;border-radius:12px;padding:12px 18px}
  .page-body{padding-bottom:56px}
}

/* roulang page: article */
:root{
  --ink-900:#061214;
  --ink-800:#0A1B1F;
  --ink-700:#102830;
  --primary:#1FD1C4;
  --primary-hover:#35E6D8;
  --primary-active:#14A99F;
  --accent:#FF9F43;
  --text:#E6F4F3;
  --text-soft:#CBE2E1;
  --muted:#93AEB1;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,209,196,.40);
  --glass:rgba(255,255,255,.04);
  --glass-strong:rgba(255,255,255,.06);
  --r-card:18px;
  --r-block:24px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 20px 50px -20px rgba(0,0,0,.6);
  --shadow-glow:0 0 0 1px rgba(31,209,196,.5), 0 12px 30px -10px rgba(31,209,196,.45);
  --mono:ui-monospace,"JetBrains Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--ink-900);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
}
body::before{
  content:"";
  position:fixed;
  top:0;left:0;bottom:0;
  width:min(38vw,460px);
  pointer-events:none;
  z-index:0;
  background:linear-gradient(180deg,rgba(31,209,196,.10),rgba(31,209,196,0) 62%);
  filter:blur(40px);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:var(--primary-hover)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media(min-width:1024px){.container{padding:0 32px}}

/* ============ 顶栏 ============ */
.site-header{position:relative;z-index:60}
.topbar{border-bottom:1px solid var(--line);background:rgba(6,18,20,.72);backdrop-filter:blur(12px)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{position:relative;width:30px;height:18px;display:inline-block;flex-shrink:0}
.logo-mark i{position:absolute;top:50%;width:7px;height:7px;border-radius:50%;background:var(--primary);transform:translateY(-50%);box-shadow:0 0 10px rgba(31,209,196,.85)}
.logo-mark i:nth-child(1){left:0}
.logo-mark i:nth-child(2){left:11px;background:var(--primary-hover)}
.logo-mark i:nth-child(3){left:22px;background:var(--accent);box-shadow:0 0 10px rgba(255,159,67,.7)}
.logo-mark::after{content:"";position:absolute;left:6px;right:6px;top:50%;height:1px;background:linear-gradient(90deg,rgba(31,209,196,.2),rgba(31,209,196,.75),rgba(255,159,67,.35));transform:translateY(-50%)}
.logo-text{font-weight:800;letter-spacing:-.01em;font-size:17px;color:var(--text);line-height:1.2}
.logo-text em{display:block;font-style:normal;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.16em}
.topbar-note{font-size:13px;color:var(--muted);margin:0;flex:1;text-align:center}
.topbar-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.topbar-tel{font-size:13px;color:var(--muted);font-family:var(--mono);font-variant-numeric:tabular-nums}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:12px 22px;transition:transform .18s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-primary{color:#03211f;background:linear-gradient(135deg,var(--primary-hover),var(--primary));box-shadow:var(--shadow-glow);border:1px solid rgba(255,255,255,.16)}
.btn-primary:hover{color:#03211f;background:linear-gradient(135deg,#4DF2E4,var(--primary-hover));transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{color:var(--text);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px)}
.btn-ghost:hover{color:var(--primary-hover);border-color:var(--line-strong);transform:translateY(-2px)}
.navbar{position:sticky;top:0;z-index:55;border-bottom:1px solid transparent;background:rgba(6,18,20,.45);backdrop-filter:blur(10px);transition:background .25s ease,border-color .25s ease,box-shadow .25s ease}
.navbar.is-stuck{background:rgba(8,22,25,.9);border-color:var(--line);box-shadow:0 14px 34px -24px rgba(0,0,0,.9)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px}
.nav-list{display:flex;align-items:center;gap:6px;overflow:visible}
.nav-link{display:inline-block;padding:14px 14px 12px;font-size:15px;color:var(--muted);position:relative;white-space:nowrap;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--primary-active));opacity:0;box-shadow:0 0 12px rgba(31,209,196,.8);transition:opacity .2s ease}
.nav-link:hover{color:var(--text)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{opacity:1}
.nav-toggle{display:none;align-items:center;gap:8px;font-size:14px;color:var(--muted);padding:12px 0}
.nav-toggle:hover{color:var(--text)}
.scroll-progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:linear-gradient(90deg,var(--primary),var(--accent));box-shadow:0 0 10px rgba(31,209,196,.8)}

/* ============ 面包屑与文章头 ============ */
.page-main{padding:34px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:26px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.2)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--text-soft)}
.article-head{max-width:860px;border-top:1px solid rgba(255,255,255,.14);padding-top:26px;position:relative}
.article-head::before{content:"";position:absolute;top:-1px;left:0;width:120px;height:1px;background:linear-gradient(90deg,var(--primary),transparent)}
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:5px 12px;font-size:12px;font-weight:600;color:var(--primary);background:rgba(31,209,196,.12);border:1px solid rgba(31,209,196,.28)}
.article-head h1{font-size:clamp(26px,4vw,42px);line-height:1.25;font-weight:800;letter-spacing:-.02em;margin:16px 0 18px}
.meta-bar{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:13px;color:var(--muted);font-family:var(--mono);font-variant-numeric:tabular-nums;padding-bottom:6px}
.meta-bar li{display:inline-flex;align-items:center;gap:8px}
.meta-key{font-family:system-ui,"PingFang SC",sans-serif;color:rgba(147,174,177,.7);font-size:12px;border:1px solid var(--line);border-radius:6px;padding:1px 7px}
.meta-bar .accent{color:var(--accent)}

/* ============ 正文布局 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;padding:38px 0 0}
@media(min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:36px}}
.article-cover{margin:0 0 30px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--ink-700);position:relative}
.article-cover img{width:100%;height:auto;object-fit:cover;transition:transform .5s ease}
.article-cover:hover img{transform:scale(1.02)}
.article-body{max-width:820px;font-size:16px;line-height:1.8;color:var(--text)}
.article-body>*:first-child{margin-top:0}
.article-body h2{font-size:clamp(21px,2.4vw,28px);line-height:1.35;font-weight:800;letter-spacing:-.01em;margin:2.1em 0 .7em;padding-left:16px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;width:4px;height:1em;border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--primary-active));box-shadow:0 0 14px rgba(31,209,196,.7)}
.article-body h3{font-size:19px;line-height:1.4;font-weight:700;margin:1.7em 0 .6em;color:var(--text)}
.article-body h4{font-size:17px;font-weight:700;margin:1.4em 0 .5em;color:var(--text-soft)}
.article-body p{margin:0 0 1.05em}
.article-body strong{color:#F2FFFE}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(31,209,196,.45)}
.article-body a:hover{color:var(--primary-hover)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.45em 0}
.article-body li::marker{color:var(--primary)}
.article-body img{border-radius:var(--r-img);border:1px solid var(--line);margin:1.6em 0}
.article-body blockquote{margin:1.7em 0;padding:16px 20px;border-left:3px solid var(--primary);background:var(--glass);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--text-soft);backdrop-filter:blur(10px)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body pre{margin:1.6em 0;padding:16px 18px;border-radius:var(--r-img);border:1px solid var(--line);background:#04191C;overflow-x:auto;font-family:var(--mono);font-size:14px;line-height:1.7}
.article-body code{font-family:var(--mono);font-size:.9em;padding:2px 6px;border-radius:6px;background:rgba(31,209,196,.12);color:#8FF2E7}
.article-body pre code{background:none;padding:0;color:var(--text-soft)}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top}
.article-body th{background:rgba(31,209,196,.08);color:var(--text);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-body .tip{margin:1.6em 0;padding:14px 16px 14px 18px;border-radius:var(--r-img);border:1px solid var(--line);border-left:3px solid var(--accent);background:var(--glass);color:var(--text-soft)}
.empty-state{max-width:820px;border:1px solid var(--line);border-radius:var(--r-block);background:var(--glass);padding:44px 28px;text-align:center;backdrop-filter:blur(14px)}
.empty-state .empty-icon{width:52px;height:52px;margin:0 auto 16px;border-radius:50%;border:1px solid rgba(31,209,196,.35);display:flex;align-items:center;justify-content:center;color:var(--primary);font-family:var(--mono);font-size:22px;box-shadow:0 0 22px -6px rgba(31,209,196,.6)}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px}

/* ============ 侧栏 ============ */
.side-col{display:none}
@media(min-width:1024px){.side-col{display:block}}
.side-inner{position:sticky;top:84px;display:grid;gap:18px}
.side-card{border:1px solid var(--line);border-radius:var(--r-card);background:var(--glass);padding:20px;backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 rgba(255,255,255,.14)}
.side-title{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(31,209,196,.9)}
.side-list{display:grid;gap:10px;font-size:14px;color:var(--muted)}
.side-list li{position:relative;padding-left:16px}
.side-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--primary)}
.side-list a:hover{color:var(--primary-hover)}
.side-cta{display:grid;gap:10px;margin-top:6px}
.side-cta .btn{width:100%}

/* ============ 相关推荐 ============ */
.section{padding:72px 0 0}
@media(min-width:1024px){.section{padding:96px 0 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;border-top:1px solid rgba(255,255,255,.14);padding-top:24px;position:relative}
.section-head::before{content:"";position:absolute;top:-1px;left:0;width:110px;height:1px;background:linear-gradient(90deg,var(--primary),transparent)}
.section-head h2{font-size:clamp(20px,2.4vw,28px);font-weight:800;letter-spacing:-.01em}
.section-head p{font-size:14px;color:var(--muted);margin-top:6px}
.text-link{font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.text-link:hover{color:var(--primary-hover);gap:10px;transition:gap .2s ease}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.card{border:1px solid var(--line);border-radius:var(--r-card);background:var(--glass);overflow:hidden;backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 rgba(255,255,255,.14);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.18)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-700)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-badge{position:absolute;left:12px;top:12px;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:600;color:var(--primary);background:rgba(6,18,20,.72);border:1px solid rgba(31,209,196,.32);backdrop-filter:blur(8px)}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:16px;font-weight:700;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-title{color:var(--primary)}
.card-desc{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);font-family:var(--mono);font-variant-numeric:tabular-nums;padding-top:8px;border-top:1px solid var(--line)}
.card-foot .accent{color:var(--accent)}
.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ============ CTA 带 ============ */
.cta-band{margin-top:80px;border:1px solid var(--line);border-radius:var(--r-block);background:linear-gradient(135deg,rgba(31,209,196,.12),rgba(6,18,20,.2));padding:36px 26px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;position:relative;overflow:hidden;backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 rgba(255,255,255,.14)}
.cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(31,209,196,.22),transparent 65%)}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:800;position:relative;z-index:1}
.cta-band p{color:var(--text-soft);font-size:15px;margin-top:10px;max-width:620px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}

/* ============ 页脚 ============ */
.site-footer{margin-top:96px;border-top:1px solid var(--line);background:rgba(4,14,16,.7);position:relative;z-index:1}
.site-footer::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:24px 24px,24px 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:56px 0 34px;position:relative;z-index:1}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.85;margin-top:16px;max-width:360px}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer-list{display:grid;gap:10px;font-size:14px;color:var(--muted)}
.footer-list a:hover{color:var(--primary-hover)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;border-top:1px solid var(--line);padding:20px 0 32px;font-size:12.5px;color:rgba(147,174,177,.85);position:relative;z-index:1;font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ============ 浮动 CTA ============ */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:70;display:inline-flex;align-items:center;gap:0;height:56px;padding:0 18px;border-radius:999px;color:#03211f;background:linear-gradient(135deg,var(--primary-hover),var(--primary));border:1px solid rgba(255,255,255,.18);box-shadow:var(--shadow-glow);font-weight:700;font-size:15px;opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease,visibility .3s ease,gap .25s ease}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{color:#03211f;gap:10px;box-shadow:0 0 0 1px rgba(31,209,196,.6),0 18px 40px -12px rgba(31,209,196,.6)}
.float-cta-dot{width:8px;height:8px;border-radius:50%;background:#03211f;box-shadow:0 0 0 4px rgba(3,33,31,.16)}
.float-cta-text{max-width:0;overflow:hidden;white-space:nowrap;opacity:0;transition:max-width .3s ease,opacity .3s ease,margin .3s ease;margin-left:0}
.float-cta:hover .float-cta-text{max-width:180px;opacity:1;margin-left:8px}

/* ============ 响应式 ============ */
@media(max-width:1023px){
  .topbar-note{display:none}
}
@media(max-width:767px){
  body{background-size:20px 20px,20px 20px}
  .topbar-tel{display:none}
  .nav-toggle{display:inline-flex}
  .nav-list{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;gap:2px}
  .nav-list::-webkit-scrollbar{display:none}
  .nav-link{padding:13px 10px 11px;font-size:14px}
  .nav-link::after{left:10px;right:10px}
  .nav-list.is-open{flex-direction:column;position:absolute;left:0;right:0;top:100%;overflow:visible;background:rgba(6,18,20,.97);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);padding:8px 20px 16px;align-items:flex-start}
  .nav-list.is-open .nav-link{padding:12px 0;font-size:15px}
  .nav-list.is-open .nav-link::after{left:0;right:auto;width:28px;bottom:6px}
  .article-layout{padding-top:28px}
  .page-main{padding-top:24px}
  .related-grid{gap:16px}
  .cta-band{padding:28px 20px;margin-top:64px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .section{padding-top:56px}
  .site-footer{margin-top:72px}
  .float-cta{left:0;right:0;bottom:0;height:56px;border-radius:0;justify-content:center;padding:0 20px;transform:translateY(100%)}
  .float-cta.is-visible{transform:translateY(0)}
  .float-cta-text{max-width:none;opacity:1;margin-left:10px}
  .float-cta:hover{gap:0}
  .float-cta:hover .float-cta-text{max-width:none;margin-left:10px}
  body{padding-bottom:56px}
}
@media(max-width:520px){
  .article-head h1{font-size:24px}
  .meta-bar{gap:8px 12px}
  .btn{padding:11px 18px;font-size:14px}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#061214;
  --ink-800:#0A1B1F;
  --ink-700:#102830;
  --primary:#1FD1C4;
  --primary-hover:#35E6D8;
  --primary-active:#14A99F;
  --accent:#FF9F43;
  --text:#E6F4F3;
  --muted:#93AEB1;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.04);
  --r-card:18px;
  --r-block:24px;
  --r-btn:12px;
  --r-img:14px;
  --shadow:0 20px 50px -20px rgba(0,0,0,.6);
  --glow:0 0 0 1px rgba(31,209,196,.5), 0 12px 30px -10px rgba(31,209,196,.45);
  --font-sans:system-ui, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono:ui-monospace, "JetBrains Mono", monospace;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--ink-900);
  overflow-x:hidden;
  letter-spacing:.005em;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:24px 24px;
}
body::after{
  content:"";position:fixed;top:0;bottom:0;right:6%;width:260px;z-index:0;pointer-events:none;
  background:linear-gradient(180deg, rgba(31,209,196,.12), rgba(31,209,196,0) 62%);
  filter:blur(52px);
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
a.plain-link{text-decoration:underline;text-decoration-color:rgba(31,209,196,.5);text-underline-offset:4px;}
a.plain-link:hover{color:var(--primary-hover);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.25;}
p{margin:0 0 1em 0;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}
::selection{background:rgba(31,209,196,.35);color:#04211F;}

/* ============ 容器与区块 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
  position:relative;
  z-index:2;
}
.section{
  position:relative;
  z-index:1;
  padding:56px 0;
  border-top:1px solid var(--line);
}
.section:first-of-type{border-top:none;}
.section--alt{background:var(--ink-800);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--primary);
  background:rgba(31,209,196,.1);
  border:1px solid rgba(31,209,196,.28);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:16px;
}
.section-tag i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);}
.section-title{font-size:clamp(22px,2.6vw,34px);line-height:1.3;}
.section-sub{color:var(--muted);margin-top:12px;font-size:15.5px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--r-btn);
  font-weight:700;font-size:15px;
  transition:transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-lg{height:54px;padding:0 30px;font-size:16px;}
.btn-primary{
  background:linear-gradient(135deg,#1FD1C4 0%,#7FF0E6 100%);
  color:#04211F;
  box-shadow:var(--glow);
  border:1px solid rgba(255,255,255,.28);
  text-shadow:0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#35E6D8 0%,#9BF7EE 100%);
  box-shadow:0 0 0 1px rgba(31,209,196,.7), 0 18px 40px -12px rgba(31,209,196,.65);
  transform:translateY(-2px);
}
.btn-primary:active{transform:translateY(0);background:var(--primary-active);}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--line-strong);
  color:var(--text);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.btn-ghost:hover{
  border-color:rgba(31,209,196,.55);
  color:var(--primary-hover);
  transform:translateY(-2px);
}
.btn-block{width:100%;}

/* ============ 头部与导航 ============ */
.site-header{position:relative;z-index:60;}
.topbar{
  background:rgba(6,18,20,.86);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.topbar-inner{
  display:flex;align-items:center;gap:20px;
  min-height:64px;
  padding-top:10px;padding-bottom:10px;
}
.logo{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;}
.logo-mark{
  position:relative;width:34px;height:34px;display:inline-block;flex-shrink:0;
}
.logo-mark i{
  position:absolute;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 12px rgba(31,209,196,.9);
}
.logo-mark i:nth-child(1){width:9px;height:9px;top:3px;left:3px;}
.logo-mark i:nth-child(2){width:7px;height:7px;bottom:4px;left:14px;background:var(--accent);box-shadow:0 0 10px rgba(255,159,67,.8);}
.logo-mark i:nth-child(3){width:8px;height:8px;top:12px;right:2px;}
.logo-mark::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(45deg, transparent 46%, rgba(31,209,196,.75) 46%, rgba(31,209,196,.75) 54%, transparent 54%);
  opacity:.9;
}
.logo-text{
  font-size:19px;font-weight:800;letter-spacing:-.01em;line-height:1.1;
  display:inline-flex;align-items:baseline;gap:6px;
}
.logo-text em{
  font-style:normal;font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--primary);
  background:rgba(31,209,196,.1);
  border:1px solid rgba(31,209,196,.28);
  border-radius:999px;
  padding:2px 8px;
}
.topbar-note{
  margin:0;font-size:13.5px;color:var(--muted);
  flex:1;min-width:0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.topbar-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.topbar-tel{
  font-family:var(--font-mono);font-size:13px;color:var(--muted);
  letter-spacing:.02em;
}

.navbar{
  position:sticky;top:0;z-index:70;
  background:rgba(6,18,20,.6);
  border-bottom:1px solid transparent;
  transition:background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.navbar.is-scrolled{
  background:rgba(6,18,20,.9);
  border-bottom-color:var(--line);
  box-shadow:0 14px 34px -22px rgba(0,0,0,.95);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;
}
.nav-list{
  display:flex;align-items:center;gap:6px;list-style:none;
}
.nav-link{
  display:inline-flex;align-items:center;
  height:56px;padding:0 14px;
  font-size:15px;font-weight:600;color:var(--muted);
  position:relative;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:10px;height:2px;
  border-radius:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:center;
  transition:transform .24s ease;
  box-shadow:0 0 12px rgba(31,209,196,.9);
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(.6);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border:1px solid var(--line-strong);
  border-radius:10px;
  background:var(--glass);
  color:var(--text);font-size:14px;font-weight:600;
}
.nav-toggle:hover{border-color:rgba(31,209,196,.5);color:var(--primary-hover);}
.nav-drawer{display:none;}
.nav-drawer.is-open{display:block;}
.drawer-link{
  display:block;padding:13px 20px;
  border-top:1px solid var(--line);
  font-size:15px;font-weight:600;color:var(--muted);
  background:rgba(6,18,20,.96);
}
.drawer-link.is-active{color:var(--primary);background:rgba(31,209,196,.08);}
.drawer-link:hover{color:var(--text);}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;
  font-size:13.5px;color:var(--muted);
  padding:22px 0 0 0;
}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:rgba(147,174,177,.5);}
.crumb a:hover{color:var(--primary);}
.crumb .is-current{color:var(--text);}

/* ============ Hero ============ */
.hero{
  position:relative;z-index:1;
  padding:32px 0 56px 0;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg, rgba(10,27,31,.9) 0%, rgba(6,18,20,0) 78%);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,54fr) minmax(0,46fr);
  gap:48px;
  align-items:center;
}
.hero h1{
  font-size:clamp(28px,4.4vw,50px);
  line-height:1.15;font-weight:800;letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero h1 .hl{
  color:var(--primary);
}
.hero-lead{
  color:var(--muted);font-size:16.5px;line-height:1.85;
  max-width:600px;margin-bottom:26px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:12px;list-style:none;
}
.hero-tags li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:999px;
  padding:7px 14px;
}
.hero-tags b{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  color:var(--primary);font-weight:700;
}
.hero-media{
  position:relative;
  border-radius:var(--r-block);
  padding:10px;
  background:var(--glass);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.hero-media::after{
  content:"";position:absolute;inset:10px;border-radius:var(--r-img);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);
  pointer-events:none;
}
.hero-media img{
  width:100%;height:340px;object-fit:cover;
  background:linear-gradient(135deg,#102830,#0A1B1F);
  border:1px solid var(--line);
}
.hero-float{
  position:absolute;right:-6px;bottom:-18px;
  background:rgba(10,27,31,.92);
  border:1px solid var(--line-strong);
  border-radius:16px;
  padding:14px 18px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.hero-float b{
  display:block;font-family:var(--font-mono);font-size:22px;color:var(--primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-float span{font-size:12.5px;color:var(--muted);}

/* ============ 两栏布局 ============ */
.layout-2col{
  display:grid;
  grid-template-columns:minmax(0,320px) minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.side-panel{
  position:sticky;top:96px;
  display:flex;flex-direction:column;gap:18px;
}
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.glass:hover{
  border-color:rgba(31,209,196,.4);
  transform:translateY(-4px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16), var(--shadow);
}
.panel-title{
  font-size:15px;font-weight:700;letter-spacing:.01em;
  display:flex;align-items:center;gap:8px;
  margin-bottom:14px;
}
.panel-title::before{
  content:"";width:3px;height:15px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 10px rgba(31,209,196,.8);
}
.check-list{list-style:none;display:flex;flex-direction:column;gap:11px;}
.check-list li{
  display:flex;gap:10px;font-size:14.5px;color:var(--muted);line-height:1.7;
}
.check-list li::before{
  content:"";flex-shrink:0;width:16px;height:16px;margin-top:6px;border-radius:50%;
  background:rgba(31,209,196,.14);
  border:1px solid rgba(31,209,196,.55);
  box-shadow:inset 0 0 0 3px rgba(6,18,20,.9);
}
.jump-list{list-style:none;display:flex;flex-direction:column;gap:2px;}
.jump-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 0;font-size:14.5px;font-weight:600;color:var(--muted);
  border-bottom:1px dashed rgba(255,255,255,.07);
  transition:color .2s ease, padding-left .2s ease;
}
.jump-list a:last-child{border-bottom:none;}
.jump-list a::after{content:"→";font-family:var(--font-mono);color:rgba(31,209,196,.6);}
.jump-list a:hover{color:var(--primary-hover);padding-left:6px;}
.tip-card{
  border-left:3px solid var(--accent);
  background:rgba(255,159,67,.07);
  border-radius:12px;
  padding:16px 18px;
  font-size:14px;color:#F3DCC2;line-height:1.75;
}
.tip-card b{color:var(--accent);}

/* ============ 流程条 ============ */
.flow-wrap{margin-bottom:30px;}
.flowbar{
  display:flex;align-items:flex-start;justify-content:space-between;
  gap:8px;list-style:none;
  padding:20px 6px 4px 6px;
}
.flowbar li{
  position:relative;
  flex:1;min-width:0;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  text-align:center;
}
.flowbar li::before{
  content:"";position:absolute;top:13px;left:-50%;width:100%;height:1px;
  background:linear-gradient(90deg, rgba(31,209,196,.15), rgba(31,209,196,.55));
  z-index:0;
}
.flowbar li:first-child::before{display:none;}
.flowbar .dot{
  position:relative;z-index:1;
  width:27px;height:27px;border-radius:50%;
  background:var(--ink-800);
  border:1px solid rgba(31,209,196,.6);
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--primary);
  box-shadow:0 0 0 4px rgba(6,18,20,.9), 0 0 16px -2px rgba(31,209,196,.85);
}
.flowbar em{
  font-style:normal;font-size:13.5px;font-weight:600;color:var(--text);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;
}
.flowbar em span{display:block;font-size:11.5px;color:var(--muted);font-weight:500;}

/* ============ 步骤时间线 ============ */
.step-list{list-style:none;position:relative;}
.step-item{position:relative;padding:0 0 26px 66px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:20px;top:44px;bottom:2px;width:2px;
  background:linear-gradient(180deg, rgba(31,209,196,.55), rgba(31,209,196,0));
}
.step-item:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;
  width:42px;height:42px;border-radius:50%;
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--primary);
  background:rgba(31,209,196,.1);
  border:1px solid rgba(31,209,196,.45);
  box-shadow:0 0 20px -6px rgba(31,209,196,.8);
  font-variant-numeric:tabular-nums;
}
.step-body h3{font-size:17.5px;font-weight:700;margin-bottom:8px;}
.step-body p{font-size:15px;color:var(--muted);line-height:1.8;}
.step-meta{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:10px;
  font-family:var(--font-mono);font-size:12.5px;color:var(--accent);
  background:rgba(255,159,67,.1);
  border:1px solid rgba(255,159,67,.3);
  border-radius:999px;padding:3px 11px;
}

/* ============ 场景卡 ============ */
.scene-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:24px;
  align-items:start;
}
.scene-main{
  position:relative;overflow:hidden;
  border-radius:var(--r-block);
  border:1px solid var(--line-strong);
  background:var(--glass);
  box-shadow:var(--shadow);
}
.scene-main img{width:100%;height:280px;object-fit:cover;border-radius:0;border-bottom:1px solid var(--line);}
.scene-main-body{padding:24px;}
.scene-main-body h3{font-size:20px;margin-bottom:10px;}
.scene-main-body p{color:var(--muted);font-size:15px;line-height:1.8;}
.scene-stack{display:flex;flex-direction:column;gap:20px;}
.scene-small{
  display:flex;gap:16px;align-items:flex-start;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  padding:18px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:border-color .25s ease, transform .25s ease;
}
.scene-small:hover{border-color:rgba(31,209,196,.4);transform:translateY(-4px);}
.scene-small img{width:96px;height:82px;object-fit:cover;flex-shrink:0;border:1px solid var(--line);}
.scene-small h4{font-size:16px;margin-bottom:6px;}
.scene-small p{font-size:14px;color:var(--muted);line-height:1.7;}

/* ============ 数据条 ============ */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.stat-cell{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  padding:24px 20px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
  transition:border-color .25s ease, transform .25s ease;
}
.stat-cell:hover{border-color:rgba(31,209,196,.4);transform:translateY(-4px);}
.stat-cell b{
  display:block;
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.1;
  color:var(--primary);
  text-shadow:0 0 26px rgba(31,209,196,.35);
}
.stat-cell span{display:block;margin-top:10px;font-size:14px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:940px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:border-color .25s ease, background .25s ease;
}
.faq-item:hover{border-color:rgba(31,209,196,.32);}
.faq-item[open]{border-color:rgba(31,209,196,.42);background:rgba(31,209,196,.05);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;
  font-size:17px;font-weight:600;line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex-shrink:0;
  font-family:var(--font-mono);font-size:22px;font-weight:400;color:var(--primary);
  line-height:1;transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{
  padding:0 22px 20px 22px;
  border-left:3px solid var(--primary);
  margin-left:22px;
  padding-left:18px;
  color:var(--muted);font-size:15px;line-height:1.85;
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line-strong);
  border-radius:var(--r-block);
  padding:48px 40px;
  background:
    linear-gradient(120deg, rgba(31,209,196,.14), rgba(6,18,20,0) 62%),
    var(--ink-800);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle, rgba(31,209,196,.28), transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.5vw,32px);margin-bottom:12px;}
.cta-band p{color:var(--muted);font-size:15.5px;max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;
  margin-top:24px;
  background:var(--ink-800);
  border-top:1px solid var(--line);
  padding:56px 0 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(31,209,196,.55), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) repeat(3, minmax(0,1fr));
  gap:32px;
  padding-bottom:40px;
}
.footer-brand p{color:var(--muted);font-size:14.5px;line-height:1.8;margin-top:16px;max-width:420px;}
.footer-title{
  font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;
  display:flex;align-items:center;gap:8px;
}
.footer-title::before{content:"";width:3px;height:13px;border-radius:2px;background:var(--primary);}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a,.footer-list span{font-size:14px;color:var(--muted);transition:color .2s ease, padding-left .2s ease;}
.footer-list a:hover{color:var(--primary-hover);padding-left:4px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:20px 0 28px 0;
  border-top:1px solid var(--line);
  font-size:13px;color:rgba(147,174,177,.85);
}
.footer-bottom span{line-height:1.7;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:80;
  opacity:0;pointer-events:none;transform:translateY(14px);
  transition:opacity .35s ease, transform .35s ease;
}
.float-cta.is-show{opacity:1;pointer-events:auto;transform:translateY(0);}
.float-btn{
  display:flex;align-items:center;gap:10px;
  height:56px;padding:0 18px;
  border-radius:999px;
  background:linear-gradient(135deg,#1FD1C4,#7FF0E6);
  color:#04211F;font-weight:700;font-size:14.5px;
  box-shadow:var(--glow);
  transition:box-shadow .25s ease, transform .25s ease;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 0 0 1px rgba(31,209,196,.75), 0 20px 40px -14px rgba(31,209,196,.7);}
.float-icon{
  width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(4,33,31,.16);
  font-family:var(--font-mono);font-size:14px;
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .section{padding:64px 0;}
  .hero{padding:24px 0 48px 0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media img{height:280px;}
  .layout-2col{grid-template-columns:1fr;gap:24px;}
  .side-panel{position:static;}
  .scene-grid{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .topbar-note{display:none;}
}
@media (max-width:767px){
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .nav-list{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-drawer{display:none;}
  .nav-drawer.is-open{display:block;}
  .nav-link{height:52px;}
  .topbar-tel{display:none;}
  .hero-media img{height:230px;}
  .hero-float{right:8px;bottom:-14px;padding:12px 14px;}
  .hero-float b{font-size:18px;}
  .flowbar{flex-direction:column;align-items:flex-start;gap:18px;padding-left:4px;}
  .flowbar li{flex-direction:row;align-items:center;text-align:left;gap:14px;width:100%;}
  .flowbar li::before{
    top:auto;left:13px;width:1px;height:100%;
    background:linear-gradient(180deg, rgba(31,209,196,.5), rgba(31,209,196,.05));
  }
  .flowbar li:first-child::before{display:block;}
  .flowbar li:last-child::before{display:none;}
  .flowbar em{white-space:normal;}
  .stat-row{grid-template-columns:1fr;gap:14px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:34px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .scene-small{flex-direction:column;}
  .scene-small img{width:100%;height:150px;}
  .faq-item summary{font-size:15.5px;padding:16px 18px;}
  .faq-body{margin-left:18px;padding-left:14px;padding-right:18px;}
  .float-cta{right:0;left:0;bottom:0;transform:translateY(100%);}
  .float-cta.is-show{transform:translateY(0);}
  .float-btn{width:100%;height:56px;border-radius:0;justify-content:center;}
  .footer-bottom{flex-direction:column;}
  .step-item{padding-left:56px;}
  .step-num{width:36px;height:36px;font-size:13px;}
  .step-item::before{left:17px;top:38px;}
  .hero-cta .btn{width:100%;}
}
@media (max-width:520px){
  .hero h1{font-size:27px;}
  .hero-media img{height:200px;}
  .logo-text{font-size:17px;}
}

/* roulang page: category2 */
:root{
  --ink-900:#061214;
  --ink-800:#0A1B1F;
  --ink-700:#102830;
  --primary:#1FD1C4;
  --primary-hover:#35E6D8;
  --primary-active:#14A99F;
  --accent:#FF9F43;
  --text:#E6F4F3;
  --muted:#93AEB1;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.04);
  --r-card:18px;
  --r-lg:24px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 20px 50px -20px rgba(0,0,0,.6);
  --shadow-glow:0 0 0 1px rgba(31,209,196,.5), 0 12px 30px -10px rgba(31,209,196,.45);
  --font-cn:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
}
body::after{
  content:"";position:fixed;top:0;left:8%;width:360px;height:100vh;z-index:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(31,209,196,.12),rgba(31,209,196,0) 62%);
  filter:blur(46px);
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;}
ul,ol{list-style:none;padding:0;}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:not([class]){text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(255,255,255,.25);}
button{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;}

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

.site-header,.page-main,.site-footer{position:relative;z-index:1;}

/* ---------- 顶部品牌行 ---------- */
.site-header{position:sticky;top:0;z-index:50;}
.topbar{
  background:linear-gradient(180deg,rgba(16,40,48,.8),rgba(10,27,31,.55));
  border-bottom:1px solid var(--line);
  max-height:120px;
  transition:max-height .32s ease,opacity .24s ease,border-color .24s ease;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 20px;}
@media (min-width:1024px){.topbar-inner{padding:12px 32px;}}
.topbar-note{color:var(--muted);font-size:13.5px;display:none;}
@media (min-width:768px){.topbar-note{display:block;}}
.topbar-actions{display:flex;align-items:center;gap:14px;}
.topbar-tel{display:none;font-size:13.5px;color:var(--muted);font-family:var(--font-mono);}
@media (min-width:1024px){.topbar-tel{display:inline;}}

.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{display:inline-flex;align-items:center;gap:5px;}
.logo-mark i{display:block;width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px rgba(31,209,196,.9);}
.logo-mark i:nth-child(2){width:16px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),rgba(31,209,196,.35));box-shadow:0 0 10px rgba(31,209,196,.6);}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
.logo-text em{font-style:normal;font-size:12px;font-weight:600;color:var(--primary);margin-left:6px;letter-spacing:.08em;}

/* ---------- 频道导航行 ---------- */
.navbar{
  background:rgba(6,18,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-compact .topbar{max-height:0;opacity:0;overflow:hidden;border-bottom-color:transparent;}
.site-header.is-compact .navbar{
  background:rgba(6,18,20,.94);
  border-bottom-color:var(--line-strong);
  box-shadow:0 14px 34px -24px rgba(0,0,0,.95);
}
.nav-inner{position:relative;display:flex;align-items:center;justify-content:space-between;height:58px;}
.nav-list{display:flex;align-items:center;gap:30px;}
.nav-link{position:relative;display:inline-block;padding:17px 0;font-size:15px;font-weight:500;color:var(--muted);}
.nav-link:hover{color:var(--text);}
.nav-link.is-active{color:var(--primary);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(31,209,196,.85);
}
.nav-toggle{
  display:none;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);background:var(--glass);color:var(--text);font-size:14px;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(31,209,196,.5);color:var(--primary-hover);}
@media (max-width:767px){
  .nav-toggle{display:inline-flex;}
  .nav-list{
    position:absolute;top:100%;left:-20px;right:-20px;display:none;flex-direction:column;
    align-items:stretch;gap:0;padding:6px 20px 14px;
    background:rgba(6,18,20,.97);backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line-strong);
  }
  .nav-list.is-open{display:flex;}
  .nav-link{padding:14px 0;font-size:16px;border-bottom:1px solid var(--line);}
  .nav-link.is-active::after{display:none;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .22s ease,background-color .2s ease,border-color .2s ease,color .18s ease;
}
.btn-primary{
  background:linear-gradient(180deg,var(--primary-hover),var(--primary));
  color:#04211f;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,230,216,.65),0 18px 40px -12px rgba(31,209,196,.62);color:#04211f;}
.btn-primary:active{transform:translateY(0);background:linear-gradient(180deg,var(--primary),var(--primary-active));}
.btn-ghost{
  background:var(--glass);border-color:var(--line-strong);color:var(--text);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(31,209,196,.5);color:var(--primary-hover);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:8px 16px;font-size:13.5px;border-radius:10px;}
.btn-block{width:100%;}

/* ---------- 通用玻璃卡 ---------- */
.glass{
  position:relative;border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.glass::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;border-radius:var(--r-card) var(--r-card) 0 0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.16),transparent);
  pointer-events:none;
}
.glass:hover{
  transform:translateY(-4px);
  border-color:rgba(31,209,196,.4);
  box-shadow:0 30px 60px -26px rgba(0,0,0,.8);
}

/* ---------- 区块基础 ---------- */
.section{padding:56px 0;position:relative;}
@media (min-width:1024px){.section{padding:104px 0;}}
.section-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:800px;margin-bottom:34px;}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--primary);margin-bottom:12px;
}
.section-title{font-size:clamp(22px,2.6vw,34px);line-height:1.3;font-weight:800;letter-spacing:-.01em;}
.section-desc{color:var(--muted);font-size:15.5px;margin-top:12px;}
.lead{color:var(--muted);font-size:16.5px;max-width:820px;}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:rgba(31,209,196,.12);color:var(--primary);font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:rgba(255,159,67,.14);color:var(--accent);}
.tag{
  display:inline-flex;align-items:center;gap:8px;padding:9px 15px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);color:var(--muted);font-size:13.5px;
}
.tag b{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--primary);font-size:15px;font-weight:700;}
.tag-tone b{color:var(--accent);}

/* ---------- 分类页首屏大图 ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.cat-hero-media{position:absolute;inset:0;}
.cat-hero-media img{width:100%;height:100%;object-fit:cover;opacity:.3;}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,18,20,.6) 0%,rgba(6,18,20,.9) 58%,var(--ink-900) 100%);
}
.cat-hero-inner{position:relative;z-index:2;padding:30px 0 60px;}
@media (min-width:1024px){.cat-hero-inner{padding:44px 0 96px;}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:0;font-size:13.5px;color:var(--muted);margin-bottom:22px;}
.breadcrumb li{display:inline-flex;align-items:center;}
.breadcrumb li+li::before{content:"/";margin:0 10px;color:rgba(255,255,255,.22);}
.breadcrumb a{text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(255,255,255,.2);}
.breadcrumb a:hover{color:var(--primary-hover);}
.hero-title{font-size:clamp(28px,4.4vw,46px);line-height:1.16;font-weight:800;letter-spacing:-.02em;}
.hero-sub{color:var(--muted);font-size:clamp(15.5px,1.6vw,18px);margin-top:18px;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}

/* ---------- 两列错落卡 ---------- */
.stagger{display:grid;gap:20px;}
@media (min-width:768px){.stagger{grid-template-columns:1fr 1fr;gap:24px;}}
@media (min-width:1024px){
  .stagger>*:nth-child(even){margin-top:46px;}
}
.card{display:flex;flex-direction:column;overflow:hidden;padding:0;}
.card-media{position:relative;height:180px;overflow:hidden;border-bottom:1px solid var(--line);background:var(--ink-700);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:22px 22px 24px;}
.card-title{font-size:18px;font-weight:700;line-height:1.45;transition:color .2s ease;}
.card:hover .card-title{color:var(--primary);}
.card-text{color:var(--muted);font-size:14.5px;margin-top:10px;}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:13px;color:var(--muted);}
.card-foot .mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.06em;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:32px;margin-top:36px;max-width:860px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:10px;width:2px;
  background:linear-gradient(180deg,rgba(31,209,196,.7),rgba(31,209,196,.05));
}
.tl-item{position:relative;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:8px;width:16px;height:16px;border-radius:50%;
  background:var(--ink-900);border:2px solid var(--primary);box-shadow:0 0 14px rgba(31,209,196,.6);
}
.tl-title{font-size:17px;font-weight:700;}
.tl-text{color:var(--muted);font-size:14.5px;margin-top:4px;}

/* ---------- 步骤条 ---------- */
.steps{display:grid;gap:26px;margin-top:40px;}
@media (min-width:768px){.steps{grid-template-columns:repeat(4,1fr);gap:22px;}}
.step{position:relative;padding-top:36px;}
.step::before{
  content:"";position:absolute;top:12px;left:0;right:-22px;height:2px;
  background:linear-gradient(90deg,rgba(31,209,196,.6),rgba(31,209,196,.08));
}
.step:last-child::before{right:0;background:linear-gradient(90deg,rgba(31,209,196,.6),rgba(31,209,196,0));}
.step-dot{
  position:absolute;top:4px;left:0;width:18px;height:18px;border-radius:50%;
  background:var(--ink-800);border:2px solid var(--primary);box-shadow:0 0 16px rgba(31,209,196,.7);
}
.step-num{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.18em;color:var(--primary);}
.step-title{font-size:17px;font-weight:700;margin:6px 0;}
.step-text{color:var(--muted);font-size:14.5px;}
@media (max-width:767px){
  .step{padding:0 0 0 34px;}
  .step::before{display:none;}
  .step-dot{top:5px;left:0;}
}

/* ---------- 数据与标签墙 ---------- */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
@media (min-width:768px){.stats{grid-template-columns:repeat(4,1fr);gap:22px;}}
.stat{padding:24px 22px;border-radius:var(--r-card);}
.stat-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3vw,38px);font-weight:700;color:var(--primary);line-height:1.1;letter-spacing:-.02em;
}
.stat-label{color:var(--muted);font-size:14px;margin-top:8px;}
.tagwall{display:flex;gap:12px;overflow-x:auto;padding:6px 0 14px;scrollbar-width:none;-ms-overflow-style:none;}
.tagwall::-webkit-scrollbar{display:none;}
.tagwall span{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  background:var(--glass);color:var(--muted);font-size:13.5px;white-space:nowrap;
}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;margin-top:34px;}
.faq-item{border-radius:16px;background:var(--glass);border:1px solid var(--line);overflow:hidden;transition:border-color .24s ease;}
.faq-item:hover{border-color:rgba(31,209,196,.32);}
.faq-item.is-open{border-color:rgba(31,209,196,.45);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 20px;background:transparent;border:0;color:var(--text);
  font-size:17px;font-weight:600;line-height:1.5;text-align:left;cursor:pointer;
}
.faq-q:hover{color:var(--primary-hover);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--primary);font-size:16px;line-height:1;
  transition:transform .3s ease,color .2s ease,border-color .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:rgba(31,209,196,.55);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease;}
.faq-a-inner{
  margin:0 20px 20px 20px;padding-left:16px;border-left:3px solid var(--primary);
  color:var(--muted);font-size:14.8px;
}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-lg);padding:36px 26px;}
@media (min-width:1024px){.cta-band{padding:56px 48px;}}
.cta-band .cta-bg{position:absolute;inset:0;z-index:0;}
.cta-band .cta-bg img{width:100%;height:100%;object-fit:cover;opacity:.24;}
.cta-band::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(120deg,rgba(6,18,20,.94) 0%,rgba(6,18,20,.72) 55%,rgba(16,40,48,.85) 100%);
}
.cta-inner{position:relative;z-index:2;max-width:660px;}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;line-height:1.3;margin-top:8px;}
.cta-inner p{color:var(--muted);margin-top:14px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--ink-800),var(--ink-900));
  padding:56px 0 26px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,209,196,.35),transparent);
}
.footer-grid{display:grid;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px;}}
.footer-brand p{color:var(--muted);font-size:14.5px;margin-top:16px;max-width:340px;}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px;letter-spacing:.04em;}
.footer-list{display:grid;gap:10px;}
.footer-list a,.footer-list span{color:var(--muted);font-size:14.2px;}
.footer-list a:hover{color:var(--primary-hover);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:rgba(147,174,177,.75);font-size:12.8px;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:26px;z-index:60;
  display:flex;align-items:center;gap:10px;
  opacity:0;pointer-events:none;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.is-visible{opacity:1;pointer-events:auto;transform:translateY(0);}
.float-bubble{
  padding:9px 15px;border-radius:999px;font-size:13.5px;color:var(--text);
  background:rgba(6,18,20,.9);border:1px solid var(--line-strong);backdrop-filter:blur(12px);white-space:nowrap;
}
.float-btn{
  width:56px;height:56px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(180deg,var(--primary-hover),var(--primary));
  color:#04211f;font-weight:800;font-size:20px;box-shadow:var(--shadow-glow);
  transition:transform .2s ease,box-shadow .24s ease;
}
.float-cta:hover .float-btn{transform:translateY(-3px);box-shadow:0 0 0 1px rgba(53,230,216,.7),0 20px 42px -12px rgba(31,209,196,.7);}
.float-btn-label{display:none;font-size:15px;font-weight:700;}
@media (max-width:767px){
  .float-cta{left:12px;right:12px;bottom:12px;gap:0;}
  .float-bubble{display:none;}
  .float-btn{width:100%;height:54px;border-radius:var(--r-btn);}
  .float-btn-icon{display:none;}
  .float-btn-label{display:inline;}
}

/* ---------- 图片占位兜底 ---------- */
.img-fallback{background:linear-gradient(135deg,var(--ink-700),var(--ink-800));border:1px solid var(--line);border-radius:var(--r-img);}

/* roulang page: category3 */
:root{
  --ink-900:#061214;
  --ink-800:#0A1B1F;
  --ink-700:#102830;
  --primary:#1FD1C4;
  --primary-hover:#35E6D8;
  --primary-active:#14A99F;
  --accent:#FF9F43;
  --text:#E6F4F3;
  --muted:#93AEB1;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.04);
  --r-card:18px;
  --r-lg:24px;
  --r-btn:12px;
  --r-img:14px;
  --sh-card:0 20px 50px -20px rgba(0,0,0,.6);
  --sh-glow:0 0 0 1px rgba(31,209,196,.5),0 12px 30px -10px rgba(31,209,196,.45);
  --mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--ink-900);
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;text-underline-offset:3px}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;text-wrap:balance}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.num,.stat-num,.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

.aurora-band{
  position:fixed;top:0;left:0;bottom:0;width:min(46vw,620px);
  background:linear-gradient(90deg,rgba(31,209,196,.10),rgba(31,209,196,0) 72%);
  pointer-events:none;z-index:0;
}

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

/* ===== 顶部品牌行 ===== */
.site-header{position:relative;z-index:60}
.topbar{background:rgba(6,18,20,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;gap:16px;flex-wrap:wrap;min-height:66px;padding-block:10px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{position:relative;width:28px;height:26px;display:inline-block;flex:none}
.logo-mark i{position:absolute;width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(31,209,196,.9)}
.logo-mark i:nth-child(1){left:0;top:3px}
.logo-mark i:nth-child(2){right:0;top:12px;background:var(--accent);box-shadow:0 0 10px rgba(255,159,67,.8)}
.logo-mark i:nth-child(3){left:9px;bottom:0}
.logo-mark::before{content:"";position:absolute;left:4px;top:6px;width:19px;height:2px;border-radius:2px;background:linear-gradient(90deg,rgba(31,209,196,.9),rgba(31,209,196,.1));transform:rotate(21deg)}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.logo-text em{font-style:normal;font-size:12px;font-weight:600;color:var(--primary);margin-left:6px;padding:2px 8px;border:1px solid rgba(31,209,196,.35);border-radius:999px;background:rgba(31,209,196,.08);vertical-align:middle}
.topbar-note{margin:0;font-size:13.5px;color:var(--muted);display:none}
@media (min-width:1024px){.topbar-note{display:block}}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.topbar-tel{font-size:13px;color:var(--muted);font-family:var(--mono);display:none}
@media (min-width:640px){.topbar-tel{display:inline}}

/* ===== 频道导航 ===== */
.navbar{position:sticky;top:0;z-index:55;background:rgba(6,18,20,.72);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .25s,border-color .25s,box-shadow .25s}
.navbar.is-stuck{background:rgba(6,18,20,.94);border-bottom-color:var(--line);box-shadow:0 14px 30px -24px rgba(0,0,0,.95)}
.nav-inner{display:flex;align-items:center;gap:12px;min-height:58px}
.nav-list{display:flex;align-items:center;gap:4px;list-style:none;overflow-x:auto;scrollbar-width:none;flex:1}
.nav-list::-webkit-scrollbar{display:none}
.nav-link{display:inline-block;padding:16px 12px;font-size:15px;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap;transition:color .2s,border-color .2s}
.nav-link:hover{color:var(--text)}
.nav-link.is-active{color:var(--primary);border-bottom-color:var(--primary);box-shadow:0 10px 20px -14px rgba(31,209,196,1)}
.nav-toggle{display:none;align-items:center;gap:8px;padding:9px 14px;border-radius:var(--r-btn);background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:14px;color:var(--text)}
.nav-toggle:hover{border-color:rgba(31,209,196,.45);color:var(--primary-hover)}
@media (max-width:767px){.nav-toggle{display:inline-flex}}
.nav-drawer{position:fixed;inset:0;z-index:90;background:rgba(3,9,11,.72);backdrop-filter:blur(6px);opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s}
.nav-drawer.is-open{opacity:1;visibility:visible}
.nav-drawer-panel{position:absolute;top:0;right:0;height:100%;width:min(84vw,330px);padding:20px;display:flex;flex-direction:column;gap:6px;background:linear-gradient(180deg,var(--ink-800),var(--ink-900));border-left:1px solid var(--line);transform:translateX(14px);transition:transform .28s}
.nav-drawer.is-open .nav-drawer-panel{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;font-size:14px;color:var(--muted);font-family:var(--mono);letter-spacing:.08em}
.drawer-close{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:18px;line-height:1}
.drawer-close:hover{border-color:rgba(31,209,196,.45);color:var(--primary)}
.drawer-link{display:block;padding:13px 14px;border-radius:12px;font-size:15.5px;color:var(--muted);border:1px solid transparent}
.drawer-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.drawer-link.is-active{color:var(--primary);background:rgba(31,209,196,.08);border-color:rgba(31,209,196,.28)}
.drawer-foot{margin-top:auto;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;line-height:1.7}

/* ===== 按钮 / 标签 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .22s,box-shadow .22s,background .22s,color .22s,border-color .22s;white-space:nowrap}
.btn-primary{color:#04211F;background:linear-gradient(135deg,var(--primary-hover),var(--primary));box-shadow:var(--sh-glow)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(31,209,196,.75),0 18px 40px -12px rgba(31,209,196,.6);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px);background:var(--primary-active)}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.05);border-color:var(--line);backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:rgba(31,209,196,.45);color:var(--primary-hover);transform:translateY(-2px)}
.btn-sm{padding:9px 15px;font-size:13.5px;border-radius:10px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12px;font-family:var(--mono);background:rgba(31,209,196,.12);color:var(--primary);border:1px solid rgba(31,209,196,.25)}
.badge-accent{background:rgba(255,159,67,.12);color:var(--accent);border-color:rgba(255,159,67,.28)}
.chip{display:inline-flex;align-items:center;padding:6px 13px;border-radius:999px;font-size:13px;color:var(--muted);background:rgba(255,255,255,.04);border:1px solid var(--line);transition:.2s}
.chip:hover{color:var(--primary-hover);border-color:rgba(31,209,196,.45);background:rgba(31,209,196,.08)}

/* ===== 面包屑与页头 ===== */
.breadcrumb{padding-top:22px}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:rgba(255,255,255,.22)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current]{color:var(--text)}

.page-head{position:relative;padding:clamp(28px,4.4vw,52px) 0 clamp(44px,6vw,84px);border-bottom:1px solid var(--line);overflow:hidden;margin-top:-1px}
.page-head::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.24}
.page-head::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,18,20,.5),rgba(6,18,20,.94) 76%,var(--ink-900))}
.page-head>.container{position:relative;z-index:2}
.page-head-grid{display:grid;gap:30px;margin-top:26px}
@media (min-width:1024px){.page-head-grid{grid-template-columns:1.08fr .92fr;gap:44px;align-items:center}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-family:var(--mono);letter-spacing:.1em;color:var(--primary);padding:5px 12px;border-radius:999px;background:rgba(31,209,196,.1);border:1px solid rgba(31,209,196,.26)}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(31,209,196,.9)}
.page-head h1{font-size:clamp(28px,4.4vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;margin:18px 0 0}
.lead{margin-top:16px;max-width:62ch;font-size:clamp(15px,1.5vw,16.5px);color:var(--muted)}
.search-box{margin-top:26px;display:flex;align-items:center;gap:10px;padding:8px 8px 8px 16px;border-radius:14px;background:rgba(255,255,255,.05);border:1px solid var(--line);backdrop-filter:blur(12px);transition:border-color .2s,box-shadow .2s}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,209,196,.16)}
.search-box input{flex:1;min-width:0;background:transparent;border:0;outline:0;font-size:15px;padding:10px 0}
.search-box input::placeholder{color:rgba(147,174,177,.75)}
.tag-row{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:9px}
.tag-label{font-size:13px;color:var(--muted);font-family:var(--mono)}
.search-result{margin-top:12px;font-size:13.5px;color:var(--accent);min-height:20px}
.search-result.is-on{color:var(--accent)}
.hero-stats{margin-top:26px;display:flex;flex-wrap:wrap;gap:22px}
.hero-stats div{display:flex;flex-direction:column;gap:2px;padding-left:14px;border-left:2px solid rgba(31,209,196,.45)}
.hero-stats b{font-family:var(--mono);font-size:19px;color:var(--primary);font-weight:700}
.hero-stats span{font-size:13px;color:var(--muted)}

.page-head-media{position:relative;margin:0;padding:10px;border-radius:var(--r-lg);background:rgba(255,255,255,.04);border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--sh-card);backdrop-filter:blur(14px)}
.page-head-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:rgba(16,40,48,.7)}
.media-card{position:absolute;right:20px;bottom:20px;padding:10px 14px;border-radius:14px;background:rgba(6,18,20,.86);border:1px solid rgba(31,209,196,.3);font-size:12.5px;color:var(--muted);backdrop-filter:blur(10px);max-width:72%}
.media-card b{display:block;color:var(--primary);font-size:14px;font-family:var(--mono)}

/* ===== 通用板块 ===== */
.section{padding:clamp(48px,7vw,96px) 0;position:relative;border-top:1px solid rgba(255,255,255,.05)}
.section-alt{background:rgba(10,27,31,.55)}
.section-head{max-width:720px;margin-bottom:clamp(24px,3.4vw,40px)}
.section-head h2{font-size:clamp(22px,2.6vw,34px);line-height:1.3}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:clamp(22px,3vw,36px)}
.section-head-row .section-head{margin-bottom:0}

/* ===== 票券式快捷入口 ===== */
.ticket-grid{display:grid;gap:20px}
@media (min-width:768px){.ticket-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.ticket-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.ticket{position:relative;display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;background:var(--glass);border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.14);backdrop-filter:blur(14px);transition:transform .25s,border-color .25s,box-shadow .25s}
.ticket:hover{transform:translateY(-4px);border-color:rgba(31,209,196,.4);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--sh-card)}
.ticket-thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line)}
.ticket-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s}
.ticket:hover .ticket-thumb img{transform:scale(1.04)}
.ticket-body{padding:18px 18px 14px;display:flex;flex-direction:column;gap:10px;flex:1}
.ticket-body h3{font-size:18px;line-height:1.45}
.ticket-body p{font-size:14.5px;color:var(--muted)}
.ticket-tear{border-top:1px dashed rgba(255,255,255,.16);margin:0 18px}
.ticket-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;font-size:13px;color:var(--muted);font-family:var(--mono)}
.ticket-foot a{color:var(--primary)}
.ticket-foot a:hover{color:var(--primary-hover)}

/* ===== 文档布局 ===== */
.doc-layout{display:grid;gap:22px}
@media (min-width:1024px){.doc-layout{grid-template-columns:252px minmax(0,1fr);gap:32px;align-items:start}}
.doc-side{padding:18px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.14);backdrop-filter:blur(14px)}
@media (min-width:1024px){.doc-side{position:sticky;top:88px}}
.doc-side-title{margin:0 0 12px;font-size:12px;letter-spacing:.16em;font-family:var(--mono);color:var(--muted);text-transform:uppercase}
.doc-nav{list-style:none;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding-bottom:4px}
.doc-nav::-webkit-scrollbar{display:none}
@media (min-width:1024px){.doc-nav{flex-direction:column;gap:2px;overflow:visible;padding-bottom:0}}
.doc-nav a{display:block;padding:9px 12px;font-size:14.5px;color:var(--muted);border-radius:10px;white-space:nowrap;border-left:2px solid transparent;transition:.2s}
.doc-nav a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.doc-nav a.is-current{color:var(--primary);border-left-color:var(--primary);background:rgba(31,209,196,.08)}
.doc-side-foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.doc-side-foot a{color:var(--primary)}
.doc-side-foot a:hover{color:var(--primary-hover)}

.doc-section{margin-bottom:20px;padding:clamp(18px,3vw,28px);border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.14);backdrop-filter:blur(14px);scroll-margin-top:96px}
.doc-section:last-child{margin-bottom:0}
.doc-section-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-bottom:14px;border-bottom:1px solid var(--line)}
.doc-section-head h3{font-size:20px;display:flex;align-items:center;gap:10px}
.doc-section-head h3 i{font-style:normal;font-family:var(--mono);font-size:13px;color:var(--primary);letter-spacing:.06em}
.doc-section-head .count{font-size:13px;color:var(--muted);font-family:var(--mono)}
.doc-item{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:16px 4px;border-top:1px solid rgba(255,255,255,.06);transition:transform .2s}
.doc-item:first-of-type{border-top:0}
.doc-item:hover{transform:translateX(3px)}
.doc-item h4{font-size:16.5px;font-weight:600;line-height:1.55;transition:color .2s}
.doc-item:hover h4{color:var(--primary)}
.doc-item p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.75}
.doc-item-meta{flex:none;display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.doc-item .arrow{font-family:var(--mono);color:rgba(147,174,177,.7);font-size:15px}
.doc-item:hover .arrow{color:var(--primary)}

/* ===== 自助排查清单 ===== */
.check-list{list-style:none;display:grid;gap:12px}
@media (min-width:768px){.check-list{grid-template-columns:repeat(2,1fr)}}
.check-list li{display:flex;gap:14px;padding:16px 18px;border-radius:14px;background:rgba(255,255,255,.03);border:1px solid var(--line);transition:border-color .22s,transform .22s}
.check-list li:hover{border-color:rgba(31,209,196,.35);transform:translateY(-3px)}
.check-num{flex:none;font-family:var(--mono);font-weight:700;color:var(--primary);font-size:15px}
.check-list strong{display:block;font-size:15.5px;font-weight:600;margin-bottom:4px}
.check-list span{font-size:14px;color:var(--muted);line-height:1.7}
.tip-bar{margin-top:22px;display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:14px;background:rgba(255,159,67,.08);border:1px solid rgba(255,159,67,.25)}
.tip-bar b{color:var(--accent);font-family:var(--mono);font-size:13px;flex:none;padding-top:2px}
.tip-bar p{font-size:14px;color:var(--muted)}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px}
@media (min-width:1024px){.faq-list{grid-template-columns:repeat(2,1fr);gap:16px}}
.faq-item{border-radius:14px;background:var(--glass);border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.12);backdrop-filter:blur(14px);overflow:hidden;transition:border-color .22s,transform .22s}
.faq-item:hover{border-color:rgba(31,209,196,.32)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 18px;background:transparent;border:0;text-align:left;font-size:16.5px;font-weight:600;line-height:1.5}
.faq-q .plus{flex:none;font-size:20px;line-height:1;color:var(--primary);transition:transform .25s}
.faq-item.is-open{border-color:rgba(31,209,196,.42)}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a-inner{margin:0 18px 18px 20px;padding-left:14px;border-left:3px solid var(--primary);font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ===== CTA 带 ===== */
.cta-band{position:relative;display:grid;gap:22px;padding:clamp(24px,4vw,46px);border-radius:var(--r-lg);border:1px solid rgba(31,209,196,.28);background:linear-gradient(135deg,rgba(31,209,196,.14),rgba(255,255,255,.03) 48%,rgba(255,159,67,.1));box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--sh-card);overflow:hidden}
@media (min-width:1024px){.cta-band{grid-template-columns:1.35fr .65fr;align-items:center}}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);line-height:1.32}
.cta-band p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:60ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:1024px){.cta-actions{justify-content:flex-end}}
.cta-list{list-style:none;margin-top:16px;display:flex;flex-wrap:wrap;gap:10px}
.cta-list li{font-size:13px;color:var(--muted);font-family:var(--mono);padding:5px 11px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line)}

/* ===== 页脚 ===== */
.site-footer{position:relative;margin-top:0;padding:clamp(36px,5vw,64px) 0 26px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,27,31,.65),rgba(6,18,20,.96))}
.site-footer::before{content:"";position:absolute;inset:0 0 auto;height:1px;background:linear-gradient(90deg,rgba(31,209,196,.6),rgba(31,209,196,0))}
.footer-grid{display:grid;gap:28px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--muted);max-width:36ch;line-height:1.8}
.footer-title{margin-bottom:12px;font-size:14px;font-weight:700}
.footer-list{display:flex;flex-direction:column;gap:9px;font-size:14px;color:var(--muted)}
.footer-list a{transition:color .2s}
.footer-list a:hover{color:var(--primary)}
.footer-bottom{margin-top:30px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--muted)}

/* ===== 浮动 CTA ===== */
.float-cta{position:fixed;right:26px;bottom:26px;z-index:70;display:flex;align-items:center;gap:10px;opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .3s,transform .3s,visibility .3s}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta-bubble{max-width:0;overflow:hidden;white-space:nowrap;padding:0;border-radius:999px;background:rgba(10,27,31,.94);border:1px solid var(--line);font-size:14px;color:var(--text);transition:max-width .3s,padding .3s}
.float-cta:hover .float-cta-bubble{max-width:240px;padding:11px 16px}
.float-cta-btn{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#04211F;background:linear-gradient(135deg,var(--primary-hover),var(--primary));box-shadow:var(--sh-glow);transition:transform .22s}
.float-cta-btn:hover{transform:translateY(-3px)}
.float-bar{display:none}
@media (max-width:767px){
  .float-cta{display:none}
  .float-bar{position:fixed;left:0;right:0;bottom:0;z-index:75;height:56px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;background:rgba(6,18,20,.95);border-top:1px solid var(--line);backdrop-filter:blur(12px);font-size:14px;color:var(--muted);transform:translateY(100%);transition:transform .3s}
  .float-bar.is-visible{transform:none}
  body{padding-bottom:56px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}