/* roulang page: index */
:root{
  --bg:#070B18;
  --bg-deep:#05080F;
  --panel:#101733;
  --panel-2:#131B3A;
  --primary:#22D3EE;
  --primary-hover:#67E8F9;
  --primary-active:#0EA5C9;
  --accent-a:#A855F7;
  --accent-b:#EC4899;
  --lime:#B4F461;
  --warn:#FFC53D;
  --text:#E6ECFF;
  --text-2:#9AA7C7;
  --text-3:#6C7899;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(34,211,238,.35);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 8px 32px rgba(3,7,20,.6), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(34,211,238,.4), 0 10px 28px rgba(34,211,238,.22);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--text);
  --bs-link-color:var(--primary);
  --bs-link-hover-color:var(--primary-hover);
  --bs-border-color:var(--line);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-hover);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.3;}
h1{font-size:52px;}
h2{font-size:32px;}
h3{font-size:22px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(34,211,238,.55),0 0 0 6px rgba(34,211,238,.18);border-radius:8px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container{max-width:1240px;}}
.bg-fx{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(600px 420px at 8% 6%, rgba(34,211,238,.10), transparent 70%),
    radial-gradient(560px 400px at 92% 22%, rgba(168,85,247,.10), transparent 72%),
    linear-gradient(180deg, rgba(255,255,255,.016) 0, transparent 30%);
}
.bg-grid{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.055;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:24px 24px;
}
.scanline{
  position:fixed;
  top:0;left:0;right:0;height:1px;
  z-index:60;
  pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.75),rgba(168,85,247,.7),transparent);
}
.site-top{position:sticky;top:0;z-index:50;}
.site-top.is-scrolled .site-header{background:rgba(7,11,24,.9);border-bottom-color:var(--line-glow);}
/* 倒计时条 */
.countdown-bar{
  background:linear-gradient(90deg,rgba(34,211,238,.12),rgba(168,85,247,.12));
  border-bottom:1px solid var(--line);
  min-height:42px;
  display:flex;
  align-items:center;
}
.countdown-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:nowrap;overflow-x:auto;}
.cd-label{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);white-space:nowrap;}
.cd-dot{width:8px;height:8px;border-radius:50%;background:var(--warn);box-shadow:0 0 10px rgba(255,197,61,.8);animation:pulse 2s infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
.cd-clock{display:flex;align-items:center;gap:6px;font-family:var(--font-mono);font-variant-numeric:tabular-nums;white-space:nowrap;}
.cd-unit{
  min-width:40px;text-align:center;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  border-radius:8px;
  padding:3px 6px;
  color:var(--primary);
  font-size:15px;
  text-shadow:0 0 12px rgba(34,211,238,.6);
}
.cd-sep{color:var(--text-3);font-size:14px;}
/* 导航 */
.site-header{
  background:rgba(7,11,24,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .2s ease,border-color .2s ease;
}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(34,211,238,.22),rgba(168,85,247,.28));
  border:1px solid var(--line-glow);
  color:var(--primary);
  font-size:15px;
  box-shadow:0 0 16px rgba(34,211,238,.28);
}
.brand-text{font-size:16px;font-weight:700;color:var(--text);letter-spacing:-.01em;}
.brand:hover .brand-text{color:var(--primary-hover);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;
  padding:8px 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--text-2);
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent-a));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;border-radius:2px;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{background:rgba(34,211,238,.12);color:var(--primary);}
.nav-link.is-active::after{transform:scaleX(0);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:999px;
  padding:7px 14px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(34,211,238,.16);}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{
  background:transparent;border:0;outline:none;color:var(--text);
  font-size:14px;width:152px;
}
.nav-search input::placeholder{color:var(--text-3);}
.btn-ghost{
  padding:8px 16px;border-radius:var(--radius-btn);
  border:1px solid var(--line);color:var(--text-2);
  font-size:14px;transition:all .18s ease;white-space:nowrap;
}
.btn-ghost:hover{border-color:var(--line-glow);color:var(--primary);background:rgba(34,211,238,.06);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;border:0;
  background:linear-gradient(100deg,var(--primary),var(--accent-a));
  color:#04101C;font-weight:700;font-size:15px;
  box-shadow:var(--shadow-glow);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
  cursor:pointer;
}
.btn-primary:hover{color:#04101C;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.55),0 14px 34px rgba(34,211,238,.3);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-primary.is-sm{padding:9px 18px;font-size:14px;}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 24px;border-radius:var(--radius-btn);
  background:transparent;border:1px solid var(--line-glow);
  color:var(--primary);font-size:15px;font-weight:600;
  transition:all .18s ease;cursor:pointer;
}
.btn-secondary:hover{color:var(--primary-hover);border-color:var(--primary);background:rgba(34,211,238,.08);transform:translateY(-2px);}
.btn-text{color:var(--primary);font-size:14px;font-weight:600;position:relative;}
.btn-text::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;}
.btn-text:hover::after{transform:scaleX(1);}
.btn-block{width:100%;}
.nav-toggle{
  display:none;
  width:40px;height:40px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text);font-size:16px;cursor:pointer;
}
/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(7,11,24,.92);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:28px 24px;
  display:flex;flex-direction:column;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);font-size:16px;cursor:pointer;}
.drawer-link{
  padding:15px 16px;border-radius:14px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text);font-size:16px;font-weight:600;
}
.drawer-link.is-active{color:var(--primary);border-color:var(--line-glow);background:rgba(34,211,238,.1);}
.drawer-actions{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
/* 通用板块 */
.section{position:relative;z-index:1;padding:88px 0;}
.section.is-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.section-title{display:flex;flex-direction:column;gap:6px;}
.section-title .bar-line{width:3px;height:26px;border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--accent-a));box-shadow:0 0 14px rgba(34,211,238,.6);}
.section-title h2{display:flex;align-items:center;gap:14px;}
.section-tag{font-size:12px;color:var(--text-3);letter-spacing:.14em;font-family:var(--font-mono);}
.section-desc{color:var(--text-2);font-size:15px;max-width:640px;margin-top:10px;}
/* Hero */
.hero{
  position:relative;
  padding:72px 0 84px;
  background-image:linear-gradient(180deg,rgba(7,11,24,.82),rgba(7,11,24,.95)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.05;pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px;border-radius:999px;
  background:rgba(180,244,97,.1);border:1px solid rgba(180,244,97,.35);
  color:var(--lime);font-size:13px;font-weight:600;
  margin-bottom:22px;
}
.hero h1{font-size:52px;margin-bottom:18px;}
.hero h1 .hl{
  background:linear-gradient(100deg,var(--primary),var(--accent-b));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:18px;color:var(--text-2);line-height:1.85;max-width:620px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:30px;color:var(--text-2);font-size:14px;}
.hero-points li{display:flex;align-items:center;gap:8px;}
.hero-points i{color:var(--primary);font-size:13px;}
.card-glass{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.hero-card{padding:28px;}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.badge-lime{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;border-radius:999px;
  background:var(--lime);color:#0B1A05;
  font-size:12px;font-weight:700;
}
.badge-glass{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;border-radius:999px;
  background:rgba(34,211,238,.12);border:1px solid var(--line-glow);
  color:var(--primary);font-size:12px;font-weight:600;
}
.badge-warn{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;border-radius:999px;
  background:rgba(255,197,61,.14);border:1px solid rgba(255,197,61,.4);
  color:var(--warn);font-size:12px;font-weight:600;
}
.hero-card-code{font-family:var(--font-mono);font-size:12px;color:var(--text-3);letter-spacing:.08em;}
.hero-ver-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:42px;font-weight:700;color:var(--primary);
  text-shadow:0 0 24px rgba(34,211,238,.45);
  line-height:1.1;
}
.hero-ver-sub{font-size:13px;color:var(--text-3);margin-bottom:20px;}
.hero-spec{border-top:1px solid var(--line);padding-top:18px;margin-bottom:22px;}
.hero-spec li{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.06);font-size:14px;}
.hero-spec li:last-child{border-bottom:0;}
.hero-spec span{color:var(--text-3);flex-shrink:0;}
.hero-spec strong{color:var(--text);font-weight:600;text-align:right;}
.hero-note{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7;}
/* 卖点条目 */
.points-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.point-item{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 26px 26px 30px;
  overflow:hidden;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.point-item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--primary),var(--accent-a),transparent);
  opacity:.65;
}
.point-item:hover{border-color:var(--line-glow);transform:translateY(-2px);box-shadow:0 12px 34px rgba(3,7,20,.6);}
.point-num{
  font-family:var(--font-mono);font-size:34px;font-weight:700;
  color:rgba(34,211,238,.28);line-height:1;margin-bottom:12px;
}
.point-item h3{font-size:19px;margin-bottom:10px;}
.point-item p{font-size:14.5px;color:var(--text-2);margin:0;}
/* 图墙 */
.gallery{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:172px;
  gap:18px;
}
.g-item{
  position:relative;overflow:hidden;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  background:var(--panel);
}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.g-item:hover img{transform:scale(1.03);}
.g-item::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 38%,rgba(5,8,15,.86));
  opacity:.9;transition:opacity .25s ease;
}
.g-item figcaption{
  position:absolute;left:16px;right:16px;bottom:14px;z-index:2;
  font-size:14px;font-weight:600;color:var(--text);
}
.g-item figcaption span{display:block;font-size:12px;font-weight:400;color:var(--text-2);margin-top:2px;}
.g-1{grid-column:span 2;grid-row:span 2;}
.g-2{grid-column:span 2;}
.g-3{grid-column:span 1;}
.g-4{grid-column:span 1;}
.g-5{grid-column:span 2;}
/* 最新信息 */
.news-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:22px;}
.news-main{
  display:block;overflow:hidden;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color .2s ease,transform .2s ease;color:var(--text);
}
.news-main:hover{border-color:var(--line-glow);transform:translateY(-2px);color:var(--text);}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--panel-2);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-main:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:24px;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;font-size:13px;color:var(--text-3);}
.news-cat{color:var(--primary);background:rgba(34,211,238,.1);border:1px solid var(--line-glow);border-radius:999px;padding:2px 10px;font-size:12px;}
.news-body h3{font-size:21px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.news-side{display:flex;flex-direction:column;gap:18px;}
.news-mini{
  display:grid;grid-template-columns:120px 1fr;gap:16px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px;color:var(--text);flex:1;
  transition:border-color .2s ease,transform .2s ease;
}
.news-mini:hover{border-color:var(--line-glow);transform:translateY(-2px);color:var(--text);}
.news-mini .mini-thumb{aspect-ratio:4/3;border-radius:var(--radius-img);overflow:hidden;background:var(--panel-2);}
.news-mini .mini-thumb img{width:100%;height:100%;object-fit:cover;}
.news-mini h3{font-size:16px;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-mini p{font-size:13.5px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-mini .mini-meta{font-size:12px;color:var(--text-3);margin-top:10px;font-family:var(--font-mono);}
.news-list{margin-top:22px;border-top:1px solid var(--line);}
.news-list a{
  display:flex;align-items:center;gap:18px;
  padding:16px 4px;border-bottom:1px solid var(--line);
  color:var(--text);transition:background .18s ease,padding .18s ease;
}
.news-list a:hover{background:rgba(255,255,255,.02);padding-left:10px;color:var(--text);}
.news-list .idx{font-family:var(--font-mono);font-size:13px;color:var(--text-3);min-width:34px;}
.news-list .ttl{flex:1;font-size:15.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.news-list .tm{font-size:13px;color:var(--text-3);font-family:var(--font-mono);flex-shrink:0;}
.empty-state{
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--panel);border:1px dashed rgba(255,255,255,.14);border-radius:var(--radius-card);
  text-align:center;padding:28px;
}
.empty-state i{font-size:38px;color:var(--primary);opacity:.8;}
.empty-state p{color:var(--text-2);font-size:15px;margin:0;}
/* 数据与反馈 */
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:34px;}
.proof-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:border-color .2s ease,transform .2s ease;
}
.proof-card:hover{border-color:var(--line-glow);transform:translateY(-2px);}
.proof-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;color:var(--primary);line-height:1.1;}
.proof-num small{font-size:15px;color:var(--text-2);margin-left:3px;font-weight:500;}
.proof-card p{font-size:14px;color:var(--text-2);margin:10px 0 0;}
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.voice-card{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;display:flex;flex-direction:column;gap:14px;
}
.voice-card .stars{color:var(--warn);font-size:13px;letter-spacing:2px;}
.voice-card p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.8;}
.voice-user{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.voice-user span.dot{width:26px;height:26px;border-radius:50%;background:linear-gradient(140deg,var(--primary),var(--accent-a));display:inline-block;}
/* CTA 表单 */
.cta-band{
  position:relative;
  background:linear-gradient(120deg,rgba(34,211,238,.14),rgba(168,85,247,.14) 55%,rgba(236,72,153,.12));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:80px 0;
  overflow:hidden;
}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;position:relative;z-index:2;}
.cta-inner h2{margin-bottom:16px;}
.cta-inner .cta-desc{color:var(--text-2);font-size:15.5px;margin-bottom:24px;}
.cta-notes li{display:flex;gap:10px;align-items:flex-start;color:var(--text-2);font-size:14.5px;padding:7px 0;}
.cta-notes i{color:var(--primary);margin-top:5px;font-size:13px;}
.form-panel{padding:30px;}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:12px;
  padding:12px 14px;
  color:var(--text);
  font-size:14.5px;
  font-family:inherit;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-row input::placeholder,.form-row textarea::placeholder{color:var(--text-3);}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(34,211,238,.16);
}
.form-row select option{background:#101733;color:var(--text);}
.form-agree{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.7;}
/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s ease;
}
.faq-item.is-open{border-color:var(--line-glow);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  min-height:60px;padding:12px 22px;
  background:transparent;border:0;color:var(--text);
  text-align:left;font-size:16px;font-weight:600;cursor:pointer;
}
.faq-no{
  width:30px;height:30px;flex-shrink:0;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.1);border:1px solid var(--line-glow);
  color:var(--primary);font-family:var(--font-mono);font-size:13px;
}
.faq-q .arrow{margin-left:auto;color:var(--text-3);font-size:14px;transition:transform .24s ease;}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg);color:var(--primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a p{padding:0 22px 22px 68px;font-size:15px;line-height:1.85;color:var(--text-2);margin:0;}
/* 页脚 */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 0;position:relative;z-index:1;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent-a),transparent);
  opacity:.6;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:16px;font-weight:700;color:var(--text);}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text);}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:var(--text-2);font-size:14px;transition:color .18s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-about{color:var(--text-2);font-size:14px;line-height:1.8;max-width:340px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
/* 响应式 */
@media (max-width:1200px){
  .hero h1{font-size:44px;}
  .gallery{grid-auto-rows:158px;}
}
@media (max-width:992px){
  .nav-links,.nav-search,.btn-ghost{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero h1{font-size:38px;}
  .news-grid{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:repeat(2,1fr);}
  .voice-grid{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:768px){
  body{font-size:15px;}
  .container{padding-left:16px;padding-right:16px;}
  h1{font-size:32px;}
  .hero{padding:52px 0 60px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .points-grid{grid-template-columns:1fr 1fr;gap:14px;}
  .point-item{padding:20px 18px;}
  .point-num{font-size:26px;}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:140px;gap:12px;}
  .g-1{grid-column:span 2;grid-row:span 1;}
  .g-2{grid-column:span 2;}
  .g-5{grid-column:span 2;}
  .news-mini{grid-template-columns:96px 1fr;gap:12px;padding:12px;}
  .news-body{padding:18px;}
  .proof-grid{grid-template-columns:1fr 1fr;gap:14px;}
  .proof-card{padding:18px;}
  .proof-num{font-size:26px;}
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .cta-band{padding:56px 0;}
  .form-panel{padding:22px;}
  .faq-a p{padding:0 18px 20px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .hero-card{padding:22px;}
  .hero-ver-num{font-size:34px;}
  .hero-spec li{flex-direction:column;gap:2px;}
  .hero-spec strong{text-align:left;}
}
@media (max-width:520px){
  .points-grid{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:1fr;}
  .gallery{grid-template-columns:1fr;grid-auto-rows:160px;}
  .g-1,.g-2,.g-5{grid-column:span 1;}
  .hero-actions .btn-primary,.hero-actions .btn-secondary{width:100%;}
  .hero-spec li{font-size:13.5px;}
}

/* roulang page: article */
:root{
  --bg:#070B18;
  --bg-deep:#05080F;
  --panel:#101733;
  --panel-2:#131B3A;
  --primary:#22D3EE;
  --primary-hover:#67E8F9;
  --primary-active:#0EA5C9;
  --accent-a:#A855F7;
  --accent-b:#EC4899;
  --lime:#B4F461;
  --warn:#FFC53D;
  --text:#E6ECFF;
  --text-2:#9AA7C7;
  --text-3:#6C7899;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(34,211,238,.35);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 8px 32px rgba(3,7,20,.6);
  --shadow-btn:0 0 0 1px rgba(34,211,238,.4),0 10px 28px rgba(34,211,238,.22);
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:24px 24px;
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(620px 420px at 6% 8%,rgba(34,211,238,.08),transparent 70%),
    radial-gradient(560px 400px at 96% 4%,rgba(236,72,153,.07),transparent 70%);
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-hover)}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.35}
p{margin:0}
:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(34,211,238,.75),0 0 18px rgba(34,211,238,.45);border-radius:8px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,11,24,.74);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.55),rgba(168,85,247,.45),transparent);
  opacity:.65;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.94);
  border-bottom-color:var(--line-glow);
  box-shadow:0 10px 30px rgba(3,7,20,.65);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(34,211,238,.22),rgba(168,85,247,.24));
  border:1px solid rgba(34,211,238,.35);
  color:var(--primary);font-size:15px;
  box-shadow:0 0 16px rgba(34,211,238,.32);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav-link{
  position:relative;padding:8px 14px;font-size:15px;color:var(--text-2);
  border-radius:999px;transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent-a));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);background:rgba(34,211,238,.12);box-shadow:inset 0 0 0 1px rgba(34,211,238,.22)}
.nav-link.is-active::after{transform:scaleX(0)}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  padding:0 14px;height:38px;border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search i{color:var(--text-3);font-size:13px}
.nav-search input{
  width:156px;height:100%;border:0;background:transparent;color:var(--text);
  font-size:14px;outline:none;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 1px rgba(34,211,238,.45),0 0 18px rgba(34,211,238,.25)}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border:0;border-radius:999px;cursor:pointer;
  background:linear-gradient(120deg,#22D3EE,#7DE3F4);
  color:#04101C;font-size:15px;font-weight:700;letter-spacing:.01em;
  box-shadow:var(--shadow-btn);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.btn-primary:hover{color:#04101C;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.6),0 14px 34px rgba(34,211,238,.32)}
.btn-primary:active{background:linear-gradient(120deg,#0EA5C9,#4FD8E8);transform:translateY(0)}
.btn-primary.is-sm{padding:9px 18px;font-size:14px}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;cursor:pointer;
  background:transparent;border:1px solid rgba(34,211,238,.55);
  color:var(--primary);font-size:15px;font-weight:600;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-secondary:hover{color:var(--primary-hover);background:rgba(34,211,238,.1);border-color:var(--primary-hover);transform:translateY(-2px)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 12px;border-radius:var(--radius-btn);
  color:var(--text-2);font-size:15px;background:transparent;
  transition:color .18s ease,background .18s ease;
}
.btn-ghost:hover{color:var(--primary);background:rgba(34,211,238,.08)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);color:var(--text);place-items:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-glow);color:var(--primary)}

/* ---------- hero ---------- */
.post-hero{position:relative;overflow:hidden;padding:48px 0 44px;border-bottom:1px solid var(--line)}
.post-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.3;
}
.post-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(7,11,24,.97) 0%,rgba(7,11,24,.88) 45%,rgba(7,11,24,.6) 100%),
    radial-gradient(560px 300px at 100% 0%,rgba(168,85,247,.24),transparent 72%);
}
.post-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--primary)}
.crumb a:hover{color:var(--primary-hover);text-decoration:underline}
.crumb .sep{color:rgba(255,255,255,.2)}
.crumb .current{color:var(--text-2)}
.post-hero h1{
  font-size:clamp(30px,4vw,50px);
  line-height:1.22;
  margin:0 0 18px;
  max-width:960px;
  overflow-wrap:anywhere;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--text-2)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge-soft{background:rgba(255,255,255,.07);border:1px solid rgba(34,211,238,.3);color:var(--primary)}
.badge-lime{background:var(--lime);color:#0B1404}
.badge-warn{background:rgba(255,197,61,.16);border:1px solid rgba(255,197,61,.45);color:var(--warn)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22)}

/* ---------- article ---------- */
.article-wrap{padding:56px 0 24px}
.article-panel{
  max-width:780px;margin:0 auto;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:42px 44px;
  box-shadow:var(--shadow-card);
  font-size:16px;
}
.article-panel > *:first-child{margin-top:0}
.article-panel p{margin:0 0 1.25em;color:#C7D2EE;line-height:1.9}
.article-panel h2{
  position:relative;font-size:25px;color:#fff;
  margin:40px 0 16px;padding-left:14px;
  border-left:3px solid var(--primary);
  box-shadow:-6px 0 18px -6px rgba(34,211,238,.7);
}
.article-panel h3{font-size:20px;color:#F2F6FF;margin:28px 0 12px}
.article-panel h4{font-size:17px;color:#F2F6FF;margin:22px 0 10px}
.article-panel ul,.article-panel ol{margin:0 0 1.25em;padding-left:4px}
.article-panel li{
  position:relative;list-style:none;padding-left:18px;margin-bottom:.62em;
  color:#C7D2EE;line-height:1.85;
}
.article-panel li::before{
  content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px rgba(34,211,238,.7);
}
.article-panel blockquote{
  margin:24px 0;padding:16px 22px;border-radius:0 12px 12px 0;
  border-left:3px solid var(--primary);
  background:rgba(34,211,238,.07);
  color:#CFDAF2;
}
.article-panel blockquote p:last-child{margin-bottom:0}
.article-panel img{border-radius:var(--radius-img);margin:22px auto;height:auto}
.article-panel a{color:var(--primary);border-bottom:1px solid rgba(34,211,238,.35)}
.article-panel a:hover{color:var(--primary-hover);border-bottom-color:var(--primary-hover)}
.article-panel strong{color:#fff}
.article-panel hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-panel table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-panel th,.article-panel td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line)}
.article-panel th{background:rgba(255,255,255,.05);color:#fff;font-weight:600}
.article-panel td{color:#C7D2EE}
.article-panel code{
  font-family:var(--mono);font-size:14px;color:var(--lime);
  background:rgba(255,255,255,.06);padding:2px 7px;border-radius:6px;
}

.empty-state{
  max-width:780px;margin:0 auto;text-align:center;
  padding:68px 24px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.empty-state i{font-size:40px;color:var(--primary);display:block;margin-bottom:16px}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-2);margin-bottom:24px;font-size:15px}

/* ---------- tags / recommend ---------- */
.section{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-title{position:relative;padding-left:16px;font-size:30px}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent-a));
  box-shadow:0 0 14px rgba(34,211,238,.65);
}
.section-sub{font-size:13px;color:var(--text-3);margin-top:8px;letter-spacing:.04em}
.section-link{font-size:14px;color:var(--primary);white-space:nowrap}
.section-link:hover{text-decoration:underline}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;max-width:780px;margin:0 auto;padding-top:28px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  height:30px;padding:0 15px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-2);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.tag:hover{color:var(--primary);border-color:var(--line-glow);transform:translateY(-2px)}
.tag i{font-size:11px;color:var(--primary)}

.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  position:relative;display:flex;flex-direction:column;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;color:var(--text);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.9),rgba(168,85,247,.7),transparent);
  opacity:0;transition:opacity .22s ease;
}
.card:hover{color:var(--text);transform:translateY(-2px);border-color:var(--line-glow);box-shadow:0 14px 36px rgba(3,7,20,.68)}
.card:hover::before{opacity:1}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,24,0) 35%,rgba(7,11,24,.82) 100%);
}
.card-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:18px;line-height:1.5;color:#fff;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:13px;color:var(--text-3)}
.card-foot .go{color:var(--primary)}

/* ---------- faq ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;transition:border-color .2s ease;
}
.faq-item:hover{border-color:rgba(255,255,255,.16)}
.faq-item.is-open{border-color:var(--line-glow)}
.faq-q{
  display:flex;align-items:center;gap:14px;width:100%;min-height:60px;
  padding:16px 20px;background:none;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;line-height:1.5;
}
.faq-num{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  color:var(--primary);font-family:var(--mono);font-size:13px;
}
.faq-arrow{margin-left:auto;color:var(--text-3);font-size:13px;transition:transform .26s ease}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 20px 20px 64px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- cta ---------- */
.cta-band{
  position:relative;padding:70px 0;
  background:linear-gradient(120deg,rgba(34,211,238,.13),rgba(168,85,247,.17)),var(--bg-deep);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 260px at 12% 20%,rgba(34,211,238,.18),transparent 70%),radial-gradient(520px 260px at 88% 80%,rgba(236,72,153,.14),transparent 70%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.cta-copy h2{font-size:32px;line-height:1.3;margin-bottom:14px}
.cta-copy p{color:var(--text-2);font-size:15px;line-height:1.85;max-width:520px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-point{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:999px;font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.cta-point i{color:var(--lime);font-size:11px}
.form-panel{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.form-panel h3{font-size:19px;margin-bottom:6px;color:#fff}
.form-hint{font-size:13px;color:var(--text-3);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text);font-size:15px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{border-color:var(--primary);box-shadow:0 0 0 1px rgba(34,211,238,.45),0 0 18px rgba(34,211,238,.22)}
.form-panel .btn-primary{width:100%;margin-top:6px}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.7}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--bg-deep);
  border-top:1px solid var(--line);padding:60px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.6),rgba(168,85,247,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-about{font-size:14px;color:var(--text-2);line-height:1.85;max-width:360px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul li{list-style:none;margin-bottom:11px}
.footer-col ul li a{font-size:14px;color:var(--text-2)}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .nav-search input{width:120px}
  .card-grid{gap:20px}
}
@media (max-width:992px){
  .nav-links{
    position:fixed;top:68px;left:0;right:0;bottom:0;
    display:flex;flex-direction:column;align-items:stretch;gap:6px;
    margin:0;padding:24px;overflow-y:auto;
    background:rgba(5,8,15,.97);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:12px}
  .nav-link::after{display:none}
  .nav-search,.btn-ghost{display:none}
  .nav-toggle{display:grid}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .post-hero{padding:34px 0 32px}
  .post-hero h1{font-size:30px}
  .article-wrap{padding:36px 0 12px}
  .article-panel{padding:26px 20px}
  .article-panel h2{font-size:22px;margin-top:32px}
  .article-panel h3{font-size:18px}
  .section{padding:48px 0}
  .section-title{font-size:24px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:52px 0}
  .cta-copy h2{font-size:24px}
  .form-panel{padding:22px}
  .faq-a-inner{padding:0 20px 18px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .brand-text{font-size:15px}
  .nav-inner{gap:12px}
  .btn-primary.is-sm{padding:8px 14px;font-size:13px}
  .article-panel{padding:22px 16px;border-radius:16px}
  .tag-row{padding-top:20px}
}

/* roulang page: category1 */
:root{
  --bg:#070B18;
  --bg-deep:#05080F;
  --panel:#101733;
  --panel-2:#131B3A;
  --primary:#22D3EE;
  --primary-hover:#67E8F9;
  --primary-active:#0EA5C9;
  --accent-a:#A855F7;
  --accent-b:#EC4899;
  --lime:#B4F461;
  --warn:#FFC53D;
  --text:#E6ECFF;
  --text-2:#9AA7C7;
  --text-3:#6C7899;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(34,211,238,.35);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 32px rgba(3,7,20,.6), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(34,211,238,.4), 0 10px 28px rgba(34,211,238,.22);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  letter-spacing:0;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:24px 24px;
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(620px 420px at 6% 0%,rgba(34,211,238,.10),transparent 70%),radial-gradient(560px 460px at 100% 100%,rgba(236,72,153,.09),transparent 72%);
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-hover);}
p{margin:0 0 1em;line-height:1.8;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.3;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(34,211,238,.65),0 0 0 6px rgba(34,211,238,.16);border-radius:8px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.site-header,main,.site-footer{position:relative;z-index:1;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(9,13,28,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,24,.94);
  border-bottom-color:var(--line-glow);
  box-shadow:0 10px 30px rgba(3,7,20,.55);
}
.nav-inner{display:flex;align-items:center;gap:22px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(34,211,238,.22),rgba(168,85,247,.22));
  border:1px solid rgba(34,211,238,.32);
  color:var(--primary);font-size:16px;
  box-shadow:0 0 18px rgba(34,211,238,.28);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--text-2);white-space:nowrap;transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1px;
  background:linear-gradient(90deg,var(--primary),var(--accent-b));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{background:rgba(34,211,238,.12);color:var(--primary);}
.nav-link.is-active::after{transform:scaleX(0);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  padding:7px 14px;min-width:200px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{border-color:rgba(34,211,238,.6);box-shadow:0 0 0 3px rgba(34,211,238,.14);}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{
  background:transparent;border:0;color:var(--text);font-size:14px;width:100%;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text);font-size:16px;cursor:pointer;
}

/* ============ 按钮 ============ */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-btn);border:0;cursor:pointer;
  font-size:15px;font-weight:700;color:#04101C;
  background:linear-gradient(120deg,var(--primary),#7DD3FC 45%,var(--accent-b));
  box-shadow:var(--shadow-glow);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.btn-primary:hover{
  color:#04101C;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(34,211,238,.55),0 14px 34px rgba(34,211,238,.32);
  filter:brightness(1.04);
}
.btn-primary:active{transform:translateY(0);background:linear-gradient(120deg,var(--primary-active),#38BDF8);}
.btn-primary.is-sm{padding:9px 18px;font-size:14px;border-radius:var(--radius-pill);}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--radius-btn);cursor:pointer;
  background:transparent;border:1px solid rgba(34,211,238,.45);color:var(--primary);
  font-size:15px;font-weight:600;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-secondary:hover{
  background:rgba(34,211,238,.1);color:var(--primary-hover);
  border-color:rgba(34,211,238,.7);transform:translateY(-2px);
  box-shadow:0 10px 26px rgba(34,211,238,.18);
}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border-radius:var(--radius-pill);
  color:var(--text-2);font-size:14px;background:transparent;border:1px solid transparent;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.btn-ghost:hover{color:var(--primary);background:rgba(34,211,238,.08);border-color:var(--line);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;}
.link-arrow i{transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 徽章 ============ */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 11px;
  border-radius:var(--radius-pill);font-size:12.5px;font-weight:600;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--primary);
  backdrop-filter:blur(10px);
}
.badge-lime{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 11px;
  border-radius:var(--radius-pill);font-size:12.5px;font-weight:700;
  background:var(--lime);color:#0A1A05;
}
.badge-warn{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 11px;
  border-radius:var(--radius-pill);font-size:12.5px;font-weight:700;
  background:rgba(255,197,61,.16);color:var(--warn);border:1px solid rgba(255,197,61,.4);
}

/* ============ 面包屑 ============ */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.crumbs a{color:var(--primary);}
.crumbs span.sep{color:rgba(34,211,238,.5);}

/* ============ 页头 Banner ============ */
.page-banner{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;
  padding:74px 0 68px;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(7,11,24,.97) 0%,rgba(7,11,24,.9) 42%,rgba(7,11,24,.52) 74%,rgba(7,11,24,.28) 100%);
}
.page-banner::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent-a),transparent);
  opacity:.8;
}
.banner-inner{position:relative;z-index:2;max-width:760px;}
.banner-eyebrow{margin-bottom:16px;}
.banner-title{font-size:50px;line-height:1.16;margin-bottom:18px;}
.banner-title em{
  font-style:normal;
  background:linear-gradient(100deg,var(--primary),var(--accent-a) 60%,var(--accent-b));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.banner-lead{font-size:17px;color:var(--text-2);max-width:640px;margin-bottom:26px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.banner-meta{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:34px;max-width:800px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary);margin-bottom:12px;letter-spacing:.04em;
}
.section-head h2{font-size:34px;margin-bottom:14px;position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent-a));
  box-shadow:0 0 14px rgba(34,211,238,.6);
}
.section-head p{color:var(--text-2);font-size:16px;margin:0;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}

/* ============ 玻璃面板 ============ */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}

/* ============ 数据概览 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.stat-card{
  position:relative;padding:24px 22px;border-radius:var(--radius-card);
  background:var(--panel);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.stat-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.55),transparent);
  opacity:0;transition:opacity .2s ease;
}
.stat-card:hover{transform:translateY(-2px);border-color:var(--line-glow);}
.stat-card:hover::before{opacity:1;}
.stat-label{font-size:13px;color:var(--text-3);margin-bottom:10px;}
.stat-value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;color:var(--primary);letter-spacing:-.01em;
}
.stat-note{font-size:13px;color:var(--text-2);margin-top:8px;}

/* ============ 卡片矩阵 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.topic-card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);background:var(--panel);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.topic-card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent-b),transparent);
  opacity:0;transition:opacity .22s ease;
}
.topic-card:hover{transform:translateY(-3px);border-color:var(--line-glow);box-shadow:0 16px 40px rgba(3,7,20,.7),0 0 0 1px rgba(34,211,238,.2);}
.topic-card:hover::after{opacity:1;}
.topic-thumb{aspect-ratio:16/9;overflow:hidden;}
.topic-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.topic-card:hover .topic-thumb img{transform:scale(1.04);}
.topic-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.topic-body h3{font-size:19px;}
.topic-body p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.76;}
.topic-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:12px;}

/* ============ 图文交替 ============ */
.zig-row{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  padding:34px 0;
}
.zig-row + .zig-row{border-top:1px solid var(--line);}
.zig-media{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.zig-media:hover img{transform:scale(1.03);}
.zig-text h3{font-size:23px;margin-bottom:14px;}
.zig-text p{color:var(--text-2);font-size:15.5px;}
.zig-list{margin:14px 0 0;display:grid;gap:10px;}
.zig-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2);}
.zig-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(34,211,238,.7);
}
.zig-row.reverse .zig-media{order:2;}
.zig-row.reverse .zig-text{order:1;}

/* ============ 核对清单 ============ */
.check-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:start;}
.check-panel{
  padding:28px;border-radius:var(--radius-card);background:var(--panel);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.check-panel h3{font-size:21px;margin-bottom:18px;padding-left:14px;position:relative;}
.check-panel h3::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent-a));
}
.check-list{display:grid;gap:14px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);
  padding:13px 16px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid var(--line);
  transition:border-color .18s ease,background .18s ease;
}
.check-list li:hover{border-color:var(--line-glow);background:rgba(34,211,238,.06);}
.check-list li i{color:var(--primary);font-size:14px;margin-top:4px;flex-shrink:0;}
.notice-panel{
  padding:26px;border-radius:var(--radius-card);
  background:linear-gradient(155deg,rgba(255,197,61,.12),rgba(255,197,61,.03));
  border:1px solid rgba(255,197,61,.32);
}
.notice-panel h3{font-size:19px;margin-bottom:12px;color:var(--warn);display:flex;align-items:center;gap:10px;}
.notice-panel p{font-size:14.5px;color:var(--text-2);margin:0 0 10px;}
.notice-panel p:last-child{margin-bottom:0;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  border-radius:var(--radius-card);background:var(--panel);border:1px solid var(--line);
  overflow:hidden;transition:border-color .2s ease;
}
.faq-item.is-open{border-color:var(--line-glow);}
.faq-q{
  display:flex;align-items:center;gap:16px;width:100%;min-height:60px;
  padding:12px 20px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;
  transition:background .18s ease;
}
.faq-q:hover{background:rgba(255,255,255,.03);}
.faq-num{
  flex-shrink:0;width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--primary);
  background:rgba(255,255,255,.06);border:1px solid var(--line);
}
.faq-text{flex:1;}
.faq-arrow{color:var(--text-3);font-size:14px;transition:transform .24s ease,color .24s ease;}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease,padding .28s ease;}
.faq-a p{margin:0;padding:0 20px 0 72px;font-size:15px;line-height:1.82;color:var(--text-2);}
.faq-item.is-open .faq-a{max-height:340px;padding-bottom:20px;}

/* ============ CTA 表单 ============ */
.cta-band{
  position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:
    radial-gradient(720px 320px at 12% 0%,rgba(34,211,238,.16),transparent 70%),
    radial-gradient(620px 320px at 92% 100%,rgba(168,85,247,.16),transparent 72%),
    linear-gradient(180deg,#0A1024,#070B18);
}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:78px 0;}
.cta-copy h2{font-size:33px;margin-bottom:16px;}
.cta-copy p{color:var(--text-2);font-size:16px;max-width:520px;}
.cta-points{display:grid;gap:12px;margin-top:22px;}
.cta-points li{display:flex;gap:10px;align-items:center;font-size:15px;color:var(--text-2);}
.cta-points li i{color:var(--lime);font-size:13px;}
.form-panel{
  padding:30px;border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.form-panel h3{font-size:20px;margin-bottom:8px;}
.form-panel .form-hint{font-size:13.5px;color:var(--text-3);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;font-size:15px;color:var(--text);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field textarea{resize:vertical;min-height:88px;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(34,211,238,.7);background:rgba(34,211,238,.05);
  box-shadow:0 0 0 3px rgba(34,211,238,.14);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.form-panel .btn-primary{width:100%;}
.form-privacy{font-size:12.5px;color:var(--text-3);margin:14px 0 0;line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-deep);border-top:1px solid var(--line-glow);
  padding:64px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-about{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px;margin:0;}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .banner-title{font-size:44px;}
  .nav-search{min-width:160px;}
}
@media (max-width:1024px){
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .check-wrap{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:64px 0;}
  .nav-search{display:none;}
}
@media (max-width:992px){
  .nav-links{
    position:fixed;top:68px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;
    padding:24px;
    background:rgba(7,11,24,.97);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .24s ease,transform .24s ease;
  }
  .nav-links.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:12px;}
  .nav-link.is-active{background:rgba(34,211,238,.12);}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .btn-ghost{display:none;}
  .btn-primary.is-sm{padding:9px 14px;font-size:13px;}
}
@media (max-width:768px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .section{padding:52px 0;}
  .section-tight{padding:44px 0;}
  .page-banner{padding:48px 0 44px;}
  .banner-title{font-size:31px;}
  .banner-lead{font-size:15.5px;}
  .banner-actions{gap:10px;}
  .banner-actions .btn-primary,.banner-actions .btn-secondary{width:100%;}
  .section-head h2{font-size:25px;}
  .section-head p{font-size:15px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .stat-card{padding:18px;}
  .stat-value{font-size:22px;}
  .card-grid{grid-template-columns:1fr;}
  .zig-row{grid-template-columns:1fr;gap:22px;padding:26px 0;}
  .zig-row.reverse .zig-media{order:1;}
  .zig-row.reverse .zig-text{order:2;}
  .zig-text h3{font-size:20px;}
  .faq-a p{padding-left:20px;}
  .faq-item.is-open .faq-a{padding-bottom:18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-about{max-width:none;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .banner-title{font-size:28px;}
  .stat-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-copy h2{font-size:24px;}
  .form-panel{padding:22px;}
  .stat-value{font-size:21px;}
}

/* roulang page: category2 */
:root{
  --bg:#070B18;
  --bg-deep:#05080F;
  --panel:#101733;
  --panel-2:#131B3A;
  --primary:#22D3EE;
  --primary-hover:#67E8F9;
  --primary-active:#0EA5C9;
  --accent-a:#A855F7;
  --accent-b:#EC4899;
  --lime:#B4F461;
  --warn:#FFC53D;
  --text:#E6ECFF;
  --text-2:#9AA7C7;
  --text-3:#6C7899;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(34,211,238,.35);
  --radius-card:18px;
  --radius-media:14px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 32px rgba(3,7,20,.6), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(34,211,238,.4), 0 10px 28px rgba(34,211,238,.22);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(34,211,238,.10), transparent 60%),
    radial-gradient(720px 460px at 92% 2%, rgba(236,72,153,.08), transparent 62%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.8),rgba(168,85,247,.8),transparent);
  z-index:200;
  pointer-events:none;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.28;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(34,211,238,.75),0 0 18px rgba(34,211,238,.45);border-radius:10px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);border:0;
  background:linear-gradient(120deg,var(--primary),#5AD9F0 45%,var(--accent-b));
  color:#04101C;font-weight:700;font-size:15px;letter-spacing:.01em;
  box-shadow:var(--shadow-glow);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
  cursor:pointer;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.55),0 14px 36px rgba(34,211,238,.32);color:#04101C;}
.btn-primary:active{transform:translateY(0);background:linear-gradient(120deg,var(--primary-active),#3BB8D6);}
.btn-primary.is-sm{padding:10px 20px;font-size:14px;}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-pill);
  background:transparent;border:1px solid rgba(34,211,238,.45);
  color:var(--primary);font-weight:600;font-size:15px;
  transition:background .18s ease,border-color .18s ease,transform .18s ease,color .18s ease;
  cursor:pointer;
}
.btn-secondary:hover{background:rgba(34,211,238,.10);border-color:var(--primary);transform:translateY(-2px);color:var(--primary-hover);}
.btn-secondary:active{background:rgba(34,211,238,.18);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  color:var(--text-2);font-size:14px;font-weight:500;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.btn-ghost:hover{color:var(--primary);border-color:var(--line-glow);background:rgba(34,211,238,.08);}
.link-more{
  position:relative;color:var(--primary);font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;
  background:var(--primary);transition:width .22s ease;
}
.link-more:hover::after{width:100%;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-glass{background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.28);color:var(--primary);}
.badge-lime{background:var(--lime);color:#0C1A05;}
.badge-warn{background:var(--warn);color:#261A00;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(7,11,24,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.92);
  border-bottom-color:var(--line-glow);
  box-shadow:0 10px 30px rgba(3,7,20,.6);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--accent-a));
  color:#04101C;font-size:16px;
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 8px 22px rgba(34,211,238,.28);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;justify-content:center;}
.nav-link{
  position:relative;padding:8px 15px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:1.5px;
  border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--accent-a));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--primary-hover);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{background:rgba(34,211,238,.12);color:var(--primary);}
.nav-link.is-active::after{transform:scaleX(0);}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{
  width:132px;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(34,211,238,.18);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text);place-items:center;cursor:pointer;
}
.drawer-actions{display:none;}

/* ---------- 页面头 banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  padding:72px 0 76px;
  background-image:
    linear-gradient(100deg, rgba(7,11,24,.97) 0%, rgba(7,11,24,.90) 34%, rgba(9,14,34,.62) 66%, rgba(12,8,28,.52) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.5;
  mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 70%);
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 70%);
}
.banner-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;}
.breadcrumb a{color:var(--text-2);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span.sep{color:rgba(34,211,238,.6);}
.banner-grid h1{
  font-size:50px;font-weight:700;letter-spacing:-.02em;line-height:1.18;
  margin:14px 0 18px;
}
.banner-grid h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--primary),var(--accent-a) 70%,var(--accent-b));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.banner-lead{font-size:17px;color:var(--text-2);max-width:560px;line-height:1.85;}
.banner-meta{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;
  margin:30px 0 32px;max-width:620px;
}
.meta-cell{
  padding:16px 18px;border-radius:var(--radius-media);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.meta-cell dt{font-size:12.5px;color:var(--text-3);margin-bottom:6px;}
.meta-cell dd{
  margin:0;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:17px;font-weight:700;color:var(--primary);
}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;}
.banner-figure{
  position:relative;margin:0;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 18px 48px rgba(3,7,20,.7), inset 0 1px 0 rgba(255,255,255,.06);
  aspect-ratio:4/3;
}
.banner-figure img{width:100%;height:100%;object-fit:cover;}
.banner-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(5,8,15,.82));
}
.banner-figure figcaption{
  position:absolute;left:18px;right:18px;bottom:16px;z-index:2;
  font-size:13px;color:var(--text-2);
}
.banner-figure .float-chip{
  position:absolute;top:16px;left:16px;z-index:2;
}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;position:relative;}
.section-alt{padding:88px 0;background:linear-gradient(180deg,rgba(16,23,51,.55),rgba(7,11,24,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:34px;}
.section-head h2{
  position:relative;padding-left:16px;font-size:32px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent-a));
  box-shadow:0 0 14px rgba(34,211,238,.65);
}
.section-label{display:block;font-size:13px;color:var(--text-3);margin-bottom:6px;letter-spacing:.08em;}
.section-desc{color:var(--text-2);font-size:16px;max-width:760px;margin-top:14px;}

/* ---------- 步骤时间线 ---------- */
.steps{max-width:900px;margin:0 auto;}
.step{display:flex;gap:24px;padding-bottom:34px;position:relative;}
.step:last-child{padding-bottom:0;}
.step:not(:last-child)::before{
  content:"";position:absolute;left:27px;top:68px;bottom:2px;width:2px;
  background:linear-gradient(180deg,rgba(34,211,238,.55),rgba(168,85,247,.28),rgba(34,211,238,.05));
}
.step-no{
  flex:0 0 56px;width:56px;height:56px;border-radius:16px;
  display:grid;place-items:center;
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:19px;font-weight:700;
  color:var(--primary);
  background:linear-gradient(160deg,rgba(34,211,238,.18),rgba(168,85,247,.12));
  border:1px solid rgba(34,211,238,.35);
  box-shadow:0 0 0 1px rgba(34,211,238,.1),0 10px 26px rgba(34,211,238,.16);
  position:relative;z-index:2;
}
.step-body{
  flex:1;min-width:0;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 26px;
  box-shadow:0 8px 26px rgba(3,7,20,.5);
  transition:border-color .2s ease,transform .2s ease;
}
.step-body:hover{border-color:var(--line-glow);transform:translateY(-2px);}
.step-body h3{font-size:20px;margin-bottom:8px;}
.step-body p{color:var(--text-2);font-size:15.5px;}
.step-points{margin-top:14px;display:grid;gap:8px;}
.step-points li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2);
}
.step-points li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px rgba(34,211,238,.7);
}
.step-tag{
  display:inline-flex;align-items:center;gap:6px;margin-bottom:10px;
  font-size:12.5px;color:var(--lime);
}
.step-tag i{font-size:11px;}

/* ---------- 环境要求 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.spec-card{
  padding:24px;border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
  transition:border-color .2s ease,transform .2s ease;
}
.spec-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent-a),transparent);
  opacity:0;transition:opacity .2s ease;
}
.spec-card:hover{border-color:var(--line-glow);transform:translateY(-3px);}
.spec-card:hover::before{opacity:1;}
.spec-icon{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.25);
  color:var(--primary);font-size:17px;margin-bottom:14px;
}
.spec-card h3{font-size:18px;margin-bottom:8px;}
.spec-card p{font-size:14.5px;color:var(--text-2);}
.spec-value{
  display:block;margin-top:12px;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:15px;color:var(--lime);
}

/* ---------- 故障排查 ---------- */
.fix-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.fix-card{
  display:flex;gap:18px;
  padding:24px;border-radius:var(--radius-card);
  background:var(--panel-2);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.fix-card:hover{border-color:var(--line-glow);transform:translateY(-2px);}
.fix-card .fix-icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:rgba(255,197,61,.12);border:1px solid rgba(255,197,61,.28);color:var(--warn);font-size:16px;
}
.fix-card h3{font-size:17.5px;margin-bottom:6px;}
.fix-card p{font-size:14.5px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{max-width:920px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item.is-open{border-color:var(--line-glow);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:18px 22px;min-height:56px;
  background:transparent;border:0;text-align:left;cursor:pointer;
  color:var(--text);
}
.faq-q:hover{background:rgba(34,211,238,.05);}
.faq-num{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--primary);
}
.faq-q span.q-text{flex:1;font-size:16px;font-weight:600;}
.faq-q i.arrow{color:var(--text-3);font-size:14px;transition:transform .24s ease,color .24s ease;}
.faq-item.is-open .faq-q i.arrow{transform:rotate(180deg);color:var(--primary);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s ease;
}
.faq-a p{
  padding:0 22px 20px 72px;
  font-size:15px;line-height:1.8;color:var(--text-2);
}

/* ---------- CTA 表单 ---------- */
.cta-band{
  padding:80px 0;
  background:
    radial-gradient(760px 380px at 18% 0%, rgba(34,211,238,.14), transparent 62%),
    radial-gradient(620px 340px at 88% 100%, rgba(236,72,153,.12), transparent 60%),
    linear-gradient(180deg,#0A1024,#0D1430);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.cta-copy h2{font-size:34px;margin-bottom:16px;}
.cta-copy p{color:var(--text-2);font-size:16px;max-width:520px;}
.cta-list{margin-top:26px;display:grid;gap:12px;}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text-2);}
.cta-list i{color:var(--primary);font-size:14px;margin-top:.42em;}
.form-panel{
  padding:28px;border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.form-row{display:grid;gap:16px;margin-bottom:16px;}
.form-row.two{grid-template-columns:1fr 1fr;}
.form-field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:7px;}
.form-field input,.form-field select{
  width:100%;padding:12px 14px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  font-size:15px;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
  appearance:none;
}
.form-field input::placeholder{color:var(--text-3);}
.form-field input:focus,.form-field select:focus{
  outline:none;border-color:var(--primary);background:rgba(34,211,238,.06);
  box-shadow:0 0 0 3px rgba(34,211,238,.16);
}
.form-field select option{background:#101733;color:var(--text);}
.form-panel .btn-primary{width:100%;margin-top:6px;}
.form-note{margin-top:12px;font-size:12.8px;color:var(--text-3);line-height:1.7;}
.form-tip{
  display:none;margin-top:12px;padding:12px 14px;border-radius:12px;
  background:rgba(180,244,97,.12);border:1px solid rgba(180,244,97,.3);
  color:var(--lime);font-size:13.5px;
}
.form-tip.is-show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  position:relative;
  padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.55),rgba(168,85,247,.55),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{font-size:16px;}
.footer-about{font-size:14px;color:var(--text-3);line-height:1.8;max-width:340px;}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .18s ease,padding-left .18s ease;}
.footer-col a:hover{color:var(--primary);padding-left:4px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .banner-grid h1{font-size:44px;}
  .spec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  .nav-links{
    position:fixed;top:68px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:8px;
    padding:22px 24px 40px;
    background:rgba(7,11,24,.95);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    transform:translateX(100%);
    transition:transform .24s ease;
    overflow-y:auto;z-index:90;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{width:100%;padding:14px 16px;font-size:16px;border-radius:14px;}
  .nav-link::after{display:none;}
  .nav-toggle{display:grid;}
  .nav-search,.nav-right .btn-ghost,.nav-right .btn-primary{display:none;}
  .drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:18px;}
  .drawer-actions .btn-primary,.drawer-actions .btn-secondary{width:100%;}
  .banner-grid{grid-template-columns:1fr;gap:34px;}
  .banner-grid h1{font-size:38px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section,.section-alt{padding:64px 0;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .banner-grid h1{font-size:31px;}
  .banner-lead{font-size:15.5px;}
  .banner-meta{grid-template-columns:1fr;max-width:100%;}
  .page-banner{padding:48px 0 54px;}
  .section,.section-alt{padding:52px 0;}
  .section-head h2{font-size:24px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .step{gap:16px;}
  .step-no{flex:0 0 46px;width:46px;height:46px;border-radius:14px;font-size:16px;}
  .step:not(:last-child)::before{left:22px;top:56px;}
  .step-body{padding:20px 18px;}
  .fix-grid{grid-template-columns:1fr;}
  .spec-grid{grid-template-columns:1fr;}
  .cta-copy h2{font-size:26px;}
  .form-row.two{grid-template-columns:1fr;}
  .faq-a p{padding:0 18px 18px 18px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .banner-actions .btn-primary,.banner-actions .btn-secondary{width:100%;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;}
  .spec-card{padding:20px;}
}

/* roulang page: category3 */
:root{
  --bg:#070B18;
  --bg-deep:#05080F;
  --panel:#101733;
  --panel-2:#131B3A;
  --primary:#22D3EE;
  --primary-hover:#67E8F9;
  --primary-active:#0EA5C9;
  --accent-a:#A855F7;
  --accent-b:#EC4899;
  --lime:#B4F461;
  --warn:#FFC53D;
  --text:#E6ECFF;
  --text-2:#9AA7C7;
  --text-3:#6C7899;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(34,211,238,.35);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 8px 32px rgba(3,7,20,.6), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(34,211,238,.4), 0 10px 28px rgba(34,211,238,.22);
  --container:1240px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color 180ms ease,border-color 180ms ease,background-color 180ms ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(34,211,238,.18);}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(8,12,26,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line-glow),rgba(168,85,247,.4),transparent);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:linear-gradient(140deg,rgba(34,211,238,.22),rgba(168,85,247,.28));
  border:1px solid var(--line-glow);
  color:var(--primary);
  font-size:16px;
  box-shadow:0 0 14px rgba(34,211,238,.28);
}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:-0.01em;
  white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:1px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 200ms ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{
  color:var(--primary);
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.24);
}
.nav-link.is-active::after{transform:scaleX(0);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:border-color 180ms ease,box-shadow 180ms ease;
}
.nav-search:focus-within{
  border-color:var(--line-glow);
  box-shadow:0 0 0 3px rgba(34,211,238,.14);
}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{
  width:148px;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.btn-ghost{
  padding:9px 14px;
  border-radius:999px;
  font-size:14px;
  color:var(--primary);
  border:1px solid transparent;
  transition:all 180ms ease;
}
.btn-ghost:hover{background:rgba(34,211,238,.1);border-color:rgba(34,211,238,.28);color:var(--primary-hover);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;
  border-radius:999px;
  border:0;
  background:linear-gradient(135deg,#22D3EE,#4FD1E8 60%,#8AD9F0);
  color:#04101C !important;
  font-weight:700;
  font-size:15px;
  line-height:1.2;
  box-shadow:var(--shadow-glow);
  transition:transform 180ms ease,box-shadow 180ms ease,filter 180ms ease;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(34,211,238,.5),0 14px 36px rgba(34,211,238,.34);
  color:#04101C;
}
.btn-primary:active{transform:translateY(0);background:var(--primary-active);}
.btn-primary.is-sm{padding:10px 20px;font-size:14px;}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;
  border-radius:999px;
  background:transparent;
  border:1px solid rgba(34,211,238,.45);
  color:var(--primary);
  font-weight:600;
  font-size:15px;
  transition:all 180ms ease;
}
.btn-secondary:hover{
  background:rgba(34,211,238,.1);
  color:var(--primary-hover);
  border-color:var(--primary-hover);
  transform:translateY(-2px);
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);
  font-size:16px;
}

/* ===== 徽章 ===== */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;
  border-radius:999px;
  font-size:13px;
  line-height:1;
  border:1px solid var(--line);
}
.badge-cyan{background:rgba(34,211,238,.12);color:var(--primary);border-color:rgba(34,211,238,.28);}
.badge-lime{background:var(--lime);color:#0B1A0F;border-color:transparent;font-weight:700;}
.badge-warn{background:rgba(255,197,61,.16);color:var(--warn);border-color:rgba(255,197,61,.34);}
.badge-purple{background:rgba(168,85,247,.16);color:#D8B4FE;border-color:rgba(168,85,247,.32);}

/* ===== 分类页头 banner ===== */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding:78px 0 72px;
  background:
    linear-gradient(90deg,rgba(7,11,24,.97) 0%,rgba(7,11,24,.92) 38%,rgba(7,11,24,.62) 66%,rgba(9,13,30,.34) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.55;
  pointer-events:none;
}
.cat-hero::after{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),rgba(236,72,153,.7),transparent);
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:48px;
  align-items:center;
}
.crumb{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);
  margin-bottom:20px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:rgba(34,211,238,.6);}
.crumb .current{color:var(--primary);}
.cat-hero h1{
  font-size:50px;
  line-height:1.16;
  font-weight:700;
  letter-spacing:-0.02em;
  margin-bottom:20px;
}
.cat-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--primary),#8CE0F5 45%,var(--accent-b));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
  max-width:620px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.status-card{
  border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  padding:26px 24px;
}
.status-card h3{
  font-size:15px;
  color:var(--text-2);
  font-weight:600;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.status-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 0;
  border-bottom:1px dashed var(--line);
  font-size:14px;
}
.status-row:last-child{border-bottom:0;}
.status-row span:first-child{color:var(--text-3);}
.status-row span:last-child{color:var(--text);font-weight:600;}
.status-row .cyan{color:var(--primary);}

/* ===== 板块通用 ===== */
.section{padding:88px 0;}
.section.alt{background:linear-gradient(180deg,rgba(16,23,51,.55),rgba(7,11,24,0));}
.section-head{margin-bottom:36px;max-width:820px;}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary);
  margin-bottom:14px;
}
.section-tag::before{
  content:"";width:3px;height:14px;border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(34,211,238,.8);
}
.section-head h2{
  font-size:32px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:-0.01em;
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:16px;line-height:1.85;}

/* ===== 清单 + 图文 ===== */
.split{
  display:grid;
  grid-template-columns:1fr 1.05fr;
  gap:48px;
  align-items:center;
}
.media-frame{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:4/3;
  position:relative;
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.media-frame:hover img{transform:scale(1.03);}
.media-frame::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,24,0) 40%,rgba(7,11,24,.55));
  pointer-events:none;
}
.check-list{display:grid;gap:14px;}
.check-item{
  display:flex;gap:14px;
  padding:18px 20px;
  border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);
  transition:border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;
}
.check-item:hover{
  border-color:var(--line-glow);
  transform:translateY(-2px);
  box-shadow:0 10px 28px rgba(3,7,20,.55);
}
.check-item i{
  color:var(--primary);
  font-size:17px;
  margin-top:5px;
  flex-shrink:0;
}
.check-item strong{display:block;font-size:16px;margin-bottom:4px;font-weight:700;}
.check-item p{color:var(--text-2);font-size:14.5px;line-height:1.75;}

/* ===== 对比表 ===== */
.table-wrap{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow-card);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.compare-table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:15px;
}
.compare-table thead th{
  background:var(--panel-2);
  color:var(--text);
  text-align:left;
  font-weight:700;
  font-size:14.5px;
  padding:18px 22px;
  border-bottom:1px solid rgba(34,211,238,.28);
  white-space:nowrap;
}
.compare-table tbody td{
  padding:20px 22px;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
  vertical-align:top;
  line-height:1.75;
}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table tbody tr:hover td{background:rgba(34,211,238,.045);}
.compare-table td:first-child{
  color:var(--text);
  font-weight:700;
  white-space:nowrap;
}
.compare-table td .mono{color:var(--primary);font-weight:600;}
.table-note{
  margin-top:16px;
  font-size:13.5px;
  color:var(--text-3);
  display:flex;align-items:flex-start;gap:8px;
}
.table-note i{color:var(--warn);margin-top:5px;}

/* ===== 自查卡片 ===== */
.risk-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.risk-card{
  position:relative;
  padding:26px 22px;
  border-radius:var(--radius-card);
  background:var(--panel);
  border:1px solid var(--line);
  overflow:hidden;
  transition:transform 180ms ease,border-color 180ms ease;
}
.risk-card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(236,72,153,.7),transparent);
  opacity:0;
  transition:opacity 200ms ease;
}
.risk-card:hover{transform:translateY(-3px);border-color:var(--line-glow);}
.risk-card:hover::before{opacity:1;}
.risk-num{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--primary);
  letter-spacing:.08em;
  margin-bottom:14px;
}
.risk-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.risk-card p{font-size:14.5px;color:var(--text-2);line-height:1.75;}

/* ===== 渠道数据卡 ===== */
.channel-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.channel-card{
  padding:26px 24px;
  border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.channel-card .ico{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(34,211,238,.12);
  border:1px solid rgba(34,211,238,.26);
  color:var(--primary);
  margin-bottom:16px;
  font-size:16px;
}
.channel-card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.channel-card .val{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:22px;
  color:var(--primary);
  margin-bottom:8px;
  letter-spacing:-0.01em;
}
.channel-card p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ===== FAQ ===== */
.faq-list{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--panel);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;gap:16px;
  min-height:64px;
  padding:16px 24px;
  text-align:left;
  transition:background-color 180ms ease;
}
.faq-q:hover{background:rgba(34,211,238,.05);}
.faq-num{
  flex-shrink:0;
  width:38px;height:28px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:8px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--primary);
}
.faq-text{
  flex:1;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
}
.faq-arrow{
  flex-shrink:0;
  color:var(--text-3);
  font-size:14px;
  transition:transform 240ms ease,color 180ms ease;
}
.faq-q[aria-expanded="true"] .faq-arrow{transform:rotate(180deg);color:var(--primary);}
.faq-q[aria-expanded="true"] .faq-text{color:var(--primary);}
.faq-a{
  padding:0 24px 22px 78px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.collapsing{transition:height 240ms ease;}

/* ===== CTA ===== */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:22px;
  padding:56px 52px;
  background:
    radial-gradient(circle at 12% 20%,rgba(34,211,238,.2),transparent 45%),
    radial-gradient(circle at 88% 80%,rgba(236,72,153,.18),transparent 45%),
    linear-gradient(150deg,#0B1230,#101A3D 55%,#0A1029);
  border:1px solid rgba(34,211,238,.22);
  box-shadow:var(--shadow-card);
}
.cta-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:start;
  position:relative;
  z-index:2;
}
.cta-band h2{
  font-size:30px;
  font-weight:700;
  line-height:1.4;
  letter-spacing:-0.01em;
  margin-bottom:16px;
}
.cta-band p{color:var(--text-2);font-size:16px;line-height:1.85;margin-bottom:24px;}
.cta-points{display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:15px;color:var(--text-2);}
.cta-points i{color:var(--lime);margin-top:5px;font-size:14px;}
.form-panel{
  border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  padding:28px 26px;
}
.form-panel h3{font-size:18px;font-weight:700;margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:8px;
}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text);
  font-size:15px;
  outline:none;
  transition:border-color 180ms ease,box-shadow 180ms ease;
}
.field select option{background:#101733;color:var(--text);}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--line-glow);
  box-shadow:0 0 0 3px rgba(34,211,238,.15);
}
.field textarea{resize:vertical;min-height:96px;line-height:1.7;}
.form-actions{margin-top:22px;}
.form-actions .btn-primary{width:100%;border-radius:var(--radius-btn);}
.form-tip{margin-top:14px;font-size:13px;color:var(--text-3);line-height:1.7;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  position:relative;
  padding:64px 0 0;
  margin-top:96px;
}
.site-footer::before{
  content:"";
  position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-glow),rgba(168,85,247,.4),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand-text{font-size:17px;font-weight:700;}
.footer-about{
  font-size:14px;
  color:var(--text-3);
  line-height:1.85;
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:var(--text);
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{
  font-size:14px;
  color:var(--text-3);
}
.footer-col ul a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .cat-hero h1{font-size:44px;}
  .risk-grid,.channel-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-links{
    position:fixed;
    top:68px;left:0;right:0;bottom:0;
    height:calc(100vh - 68px);
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:22px 20px 40px;
    background:rgba(7,11,24,.97);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    transition:opacity 240ms ease,transform 240ms ease,visibility 240ms ease;
    overflow-y:auto;
    z-index:90;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:14px;}
  .nav-link::after{display:none;}
  .nav-search,.btn-ghost{display:none;}
  .nav-inner{gap:14px;}
  .cat-hero{padding:56px 0 52px;}
  .cat-hero-grid{grid-template-columns:1fr;gap:34px;}
  .cat-hero h1{font-size:38px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:40px 28px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .container{padding-left:16px;padding-right:16px;}
  .cat-hero h1{font-size:31px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-primary,.hero-actions .btn-secondary{width:100%;}
  .section{padding:52px 0;}
  .section-head h2{font-size:23px;}
  .risk-grid,.channel-grid{grid-template-columns:1fr;}
  .faq-a{padding-left:24px;}
  .cta-band{padding:32px 20px;border-radius:18px;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-about{max-width:none;}
  .status-card{padding:22px 18px;}
  .media-frame{aspect-ratio:16/10;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .cat-hero h1{font-size:27px;}
  .compare-table{min-width:640px;}
  .faq-text{font-size:15px;}
}