/* roulang page: index */
:root{
  --bg:#050A14;
  --panel:#0A1220;
  --panel-2:#111C2E;
  --primary:#18C3F0;
  --primary-dark:#0E93BE;
  --accent:#6C5CFF;
  --amber:#FFB256;
  --ok:#35D07F;
  --err:#FF6B6B;
  --text:#E6EEF8;
  --text-2:#9FB0C6;
  --text-3:#6B7C93;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --glass:rgba(14,24,40,.55);
  --r-lg:18px;
  --r-md:14px;
  --r-btn:12px;
  --r-img:16px;
  --sh-1:0 4px 18px rgba(0,0,0,.35);
  --sh-2:0 14px 38px rgba(0,0,0,.45);
  --sh-3:0 20px 60px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(24,195,240,.25),0 10px 34px rgba(24,195,240,.22);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:#5AD8FA;}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:0;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(24,195,240,.32);color:#fff;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:104px 0;position:relative;}
.section--tight{padding:76px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.02em;
  color:var(--primary);
  background:rgba(24,195,240,.09);
  border:1px solid rgba(24,195,240,.28);
  padding:5px 13px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);}
.eyebrow--purple{color:#A79CFF;background:rgba(108,92,255,.1);border-color:rgba(108,92,255,.3);}
.eyebrow--purple::before{background:var(--accent);box-shadow:0 0 10px var(--accent);}
h2.section-title{font-size:clamp(1.5rem,2.6vw,2.15rem);line-height:1.3;margin-bottom:14px;}
.section-desc{color:var(--text-2);font-size:16px;max-width:640px;}
.dot-line{height:1px;background:linear-gradient(90deg,rgba(24,195,240,.45),rgba(108,92,255,.2),transparent);margin:0;border:0;}

/* ============ 按钮 ============ */
.btn-glow,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;
  padding:13px 26px;border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,filter .22s ease;
  white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary) 0%,#3ACBF2 45%,var(--primary-dark) 100%);
  color:#04121B;box-shadow:var(--glow);
}
.btn-glow:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(24,195,240,.5),0 16px 40px rgba(24,195,240,.34);color:#04121B;}
.btn-glow:active{transform:translateY(0);}
.btn-ghost{
  background:rgba(255,255,255,.03);color:var(--text);
  border:1px solid var(--line-2);backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:rgba(24,195,240,.6);color:var(--primary);transform:translateY(-2px);background:rgba(24,195,240,.07);}
.btn-soft{background:rgba(24,195,240,.1);color:var(--primary);border:1px solid rgba(24,195,240,.26);}
.btn-soft:hover{background:rgba(24,195,240,.18);transform:translateY(-2px);color:#7FE1FB;}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;color:var(--primary);}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 徽章 ============ */
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;padding:4px 11px;border-radius:999px;
  background:rgba(108,92,255,.16);color:#B6AEFF;border:1px solid rgba(108,92,255,.34);
  backdrop-filter:blur(8px);
}
.badge-amber{background:rgba(255,178,86,.16);color:var(--amber);border-color:rgba(255,178,86,.4);}
.badge-ok{background:rgba(53,208,127,.14);color:var(--ok);border-color:rgba(53,208,127,.36);}

/* ============ 导航 ============ */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  padding:0;
  background:rgba(9,16,30,.55);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.06);
  box-shadow:0 6px 26px rgba(0,0,0,.32);
  transition:background .3s ease,height .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-nav .nav-inner{display:flex;align-items:center;gap:26px;height:76px;transition:height .3s ease;}
.site-nav.scrolled{background:rgba(5,10,20,.92);border-bottom-color:var(--line);box-shadow:0 10px 30px rgba(0,0,0,.5);}
.site-nav.scrolled .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;color:var(--text);font-weight:700;font-size:17px;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;position:relative;
  background:linear-gradient(140deg,var(--primary) 0%,var(--accent) 100%);
  box-shadow:0 0 0 1px rgba(24,195,240,.35),0 6px 18px rgba(24,195,240,.3);
  display:flex;align-items:center;justify-content:center;color:#04121B;font-size:15px;
}
.brand-name{letter-spacing:0;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;}
.nav-links a{
  position:relative;font-size:14.5px;color:var(--text-2);font-weight:500;
  padding:9px 13px;border-radius:9px;transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:5px;height:1px;
  background:linear-gradient(90deg,var(--primary),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--text);background:rgba(24,195,240,.08);}
.nav-links a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px var(--primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-search{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);cursor:pointer;
  transition:color .2s,border-color .2s,background .2s;
}
.nav-search:hover{color:var(--primary);border-color:rgba(24,195,240,.5);background:rgba(24,195,240,.08);}
.nav-toggle{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text);display:none;align-items:center;justify-content:center;cursor:pointer;
}
@media (max-width:991.98px){
  .nav-toggle{display:flex;}
  .site-nav .nav-inner{height:64px;gap:14px;}
  .nav-links{
    position:fixed;top:64px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:26px 22px 110px;
    background:rgba(5,10,20,.97);backdrop-filter:blur(20px);
    border-top:1px solid var(--line);
    transform:translateX(100%);transition:transform .32s ease;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{font-size:17px;padding:15px 16px;border-radius:12px;}
  .nav-links a::after{display:none;}
  .nav-links a.active::before{top:14px;bottom:14px;}
  .nav-actions{display:none;}
  .nav-drawer-cta{display:block !important;position:fixed;left:22px;right:22px;bottom:26px;}
}
.nav-drawer-cta{display:none;}

/* ============ Hero ============ */
.hero{
  position:relative;min-height:90vh;display:flex;align-items:center;
  padding:150px 0 86px;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(5,10,20,.9) 0%,rgba(5,10,20,.62) 42%,rgba(5,10,20,.96) 88%,#050A14 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(24,195,240,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(24,195,240,.06) 1px,transparent 1px);
  background-size:62px 62px;
  -webkit-mask-image:radial-gradient(circle at 62% 38%,#000 0%,transparent 70%);
  mask-image:radial-gradient(circle at 62% 38%,#000 0%,transparent 70%);
}
.hero .container{position:relative;z-index:2;}
.hero h1{font-size:clamp(2rem,4.4vw,3.35rem);line-height:1.2;font-weight:700;margin-bottom:20px;}
.hero h1 .hl{
  background:linear-gradient(120deg,var(--primary) 0%,#7FE1FB 50%,var(--accent) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px;}
.hero-stats{display:flex;flex-wrap:wrap;align-items:center;gap:0;}
.hero-stats .stat{padding:0 26px;}
.hero-stats .stat:first-child{padding-left:0;}
.hero-stats .stat + .stat{border-left:1px solid var(--line-2);}
.hero-stats .num{font-size:1.5rem;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-stats .num small{font-size:13px;font-weight:500;color:var(--text-3);margin-left:3px;}
.hero-stats .lbl{font-size:13px;color:var(--text-3);}

.panel-card{
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-3);padding:26px;position:relative;overflow:hidden;
}
.panel-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(24,195,240,.6),transparent);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.panel-head h3{font-size:1.05rem;font-weight:600;}
.status-dot{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--ok);}
.status-dot i{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(53,208,127,.16);animation:pulse 2s infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
.corner{
  position:absolute;width:16px;height:16px;border:1.5px solid rgba(24,195,240,.55);pointer-events:none;
}
.corner.tl{top:10px;left:10px;border-right:0;border-bottom:0;border-radius:6px 0 0 0;}
.corner.br{bottom:10px;right:10px;border-left:0;border-top:0;border-radius:0 0 6px 0;}

.field{margin-bottom:15px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;font-weight:500;}
.field .input{
  width:100%;padding:12px 14px;border-radius:var(--r-md);
  background:rgba(5,10,20,.7);border:1px solid rgba(255,255,255,.1);
  color:var(--text);font-size:14.5px;transition:border-color .2s,box-shadow .2s,background .2s;
}
.field .input::placeholder{color:var(--text-3);}
.field .input:focus{
  outline:none;border-color:var(--primary);background:rgba(5,10,20,.9);
  box-shadow:0 0 0 3px rgba(24,195,240,.18);
}
.panel-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:12px;color:var(--text-3);}

/* ============ 卖点 ============ */
.feature-sticky{position:sticky;top:110px;}
.feature-card{
  background:linear-gradient(160deg,rgba(17,28,46,.9) 0%,rgba(10,18,32,.86) 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
  height:100%;
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(24,195,240,.34);box-shadow:var(--sh-2);}
.feature-card h3{font-size:1.15rem;margin-bottom:10px;}
.feature-card p{color:var(--text-2);font-size:14.5px;}
.f-icon{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  border:1.5px solid rgba(24,195,240,.45);color:var(--primary);font-size:17px;margin-bottom:18px;
  background:rgba(24,195,240,.07);
}
.f-icon--purple{border-color:rgba(108,92,255,.5);color:#A79CFF;background:rgba(108,92,255,.09);}
.feature-card--lead{padding:34px;}
.feature-card--lead h3{font-size:1.35rem;}
.feature-tag{
  font-size:12px;color:var(--amber);border:1px solid rgba(255,178,86,.4);
  background:rgba(255,178,86,.1);padding:3px 10px;border-radius:999px;display:inline-block;margin-bottom:14px;
}
.mini-list{margin-top:18px;display:grid;gap:9px;}
.mini-list li{display:flex;gap:9px;font-size:14px;color:var(--text-2);align-items:flex-start;}
.mini-list li i{color:var(--primary);font-size:12px;margin-top:7px;}

/* ============ 演示 ============ */
.demo-visual{
  border-radius:var(--r-img);overflow:hidden;position:relative;
  border:1px solid rgba(24,195,240,.2);
  box-shadow:0 0 0 1px rgba(24,195,240,.12),0 22px 60px rgba(24,195,240,.18);
}
.demo-visual img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.demo-visual .cap{
  position:absolute;left:0;right:0;bottom:0;padding:16px 18px;
  background:linear-gradient(180deg,transparent,rgba(5,10,20,.92));
  font-size:13px;color:var(--text-2);
}
.steps{margin-top:52px;display:grid;grid-template-columns:repeat(3,1fr);gap:0;}
.step{position:relative;padding-left:26px;padding-right:26px;}
.step::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--primary),rgba(108,92,255,.25));}
.step .idx{font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.04em;margin-bottom:8px;font-variant-numeric:tabular-nums;}
.step h3{font-size:1.05rem;margin-bottom:7px;}
.step p{font-size:14px;color:var(--text-2);}

/* ============ 证据 ============ */
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:62px;}
.proof-item{
  padding:26px 22px;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(17,28,46,.72),rgba(10,18,32,.6));
  border:1px solid var(--line);text-align:left;
  transition:border-color .25s ease,transform .25s ease;
}
.proof-item:hover{border-color:rgba(24,195,240,.3);transform:translateY(-3px);}
.proof-item .big{font-size:2.15rem;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;}
.proof-item .big small{font-size:14px;font-weight:500;color:var(--text-3);margin-left:4px;}
.proof-item .txt{font-size:14px;color:var(--text-2);margin-top:8px;}
.proof-item .big.amber{color:var(--amber);}
.proof-item .big.purple{color:#A79CFF;}
.proof-item .big.cyan{color:var(--primary);}

.review-scroll{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;scrollbar-color:rgba(24,195,240,.6) rgba(255,255,255,.06);
}
.review-scroll::-webkit-scrollbar{height:5px;}
.review-scroll::-webkit-scrollbar-track{background:rgba(255,255,255,.06);border-radius:999px;}
.review-scroll::-webkit-scrollbar-thumb{background:rgba(24,195,240,.6);border-radius:999px;}
.review-card{
  flex:0 0 340px;scroll-snap-align:start;
  background:rgba(10,18,32,.82);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;transition:border-color .25s ease;
}
.review-card:hover{border-color:rgba(108,92,255,.36);}
.review-user{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(140deg,rgba(24,195,240,.5),rgba(108,92,255,.5));
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;color:#04121B;
}
.review-user .name{font-size:15px;font-weight:600;}
.review-user .role{font-size:12.5px;color:var(--text-3);}
.review-card p{font-size:14.5px;color:var(--text-2);}

/* ============ 价格 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{
  background:linear-gradient(170deg,rgba(17,28,46,.85),rgba(10,18,32,.75));
  border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 26px;
  display:flex;flex-direction:column;position:relative;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.price-card:hover{transform:translateY(-4px);border-color:rgba(24,195,240,.3);box-shadow:var(--sh-2);}
.price-card.recommended{
  border-color:rgba(24,195,240,.6);
  box-shadow:0 0 0 1px rgba(24,195,240,.35),0 20px 55px rgba(24,195,240,.24);
  background:linear-gradient(170deg,rgba(20,36,58,.92),rgba(10,18,32,.86));
}
.price-flag{
  position:absolute;top:-12px;right:22px;font-size:12px;font-weight:600;
  background:linear-gradient(135deg,var(--amber),#FFC97F);color:#3A2200;
  padding:4px 13px;border-radius:999px;box-shadow:0 6px 18px rgba(255,178,86,.35);
}
.price-card h3{font-size:1.1rem;margin-bottom:6px;}
.price-card .plan-note{font-size:13.5px;color:var(--text-3);margin-bottom:20px;}
.price-num{font-size:2.4rem;font-weight:700;line-height:1;color:var(--text);font-variant-numeric:tabular-nums;}
.price-num small{font-size:14px;font-weight:500;color:var(--text-3);margin-left:6px;}
.price-feats{margin:24px 0;display:grid;gap:11px;flex:1;}
.price-feats li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);align-items:flex-start;}
.price-feats li i{color:var(--ok);font-size:12px;margin-top:7px;}

/* ============ 资讯 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:38px;}
.news-card{
  background:rgba(10,18,32,.78);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(24,195,240,.32);box-shadow:var(--sh-2);}
.news-thumb{position:relative;display:block;overflow:hidden;background:#0A1220;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .45s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-thumb .badge-cat{position:absolute;top:12px;left:12px;}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:1.02rem;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--primary);}
.news-body p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);border-top:1px solid rgba(255,255,255,.06);
}
.news-card--lead{flex-direction:row;}
.news-card--lead .news-thumb{flex:0 0 46%;}
.news-card--lead .news-thumb img{height:100%;aspect-ratio:auto;min-height:250px;}
.news-card--lead .news-body{padding:30px;}
.news-card--lead h3{font-size:1.35rem;-webkit-line-clamp:2;}
.news-card--lead p{-webkit-line-clamp:4;font-size:14.5px;}
.empty-state{
  text-align:center;padding:56px 24px;border-radius:var(--r-lg);
  background:rgba(10,18,32,.7);border:1px dashed rgba(24,195,240,.3);
  backdrop-filter:blur(12px);
}
.empty-state i{font-size:30px;color:var(--primary);opacity:.7;}
.empty-state p{margin:16px 0 20px;color:var(--text-2);font-size:15px;}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  background:rgba(10,18,32,.7);border:1px solid var(--line);border-radius:var(--r-md) !important;
  margin-bottom:14px;overflow:hidden;transition:border-color .25s ease;
}
.faq-accordion .accordion-item:hover{border-color:rgba(24,195,240,.3);}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;padding:20px 22px 20px 60px;
  box-shadow:none;border:0;position:relative;line-height:1.6;
}
.faq-accordion .accordion-button::before{
  content:attr(data-idx);position:absolute;left:22px;top:50%;transform:translateY(-50%);
  font-size:13px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:.03em;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary);background:rgba(24,195,240,.05);}
.faq-accordion .accordion-button:not(.collapsed)::before{color:var(--primary);}
.faq-accordion .accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--text-3);width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-2);border-radius:8px;transition:transform .25s ease,color .25s ease,border-color .25s;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"\f068";color:var(--primary);border-color:rgba(24,195,240,.5);transform:none;
}
.faq-accordion .accordion-button:focus{box-shadow:none;}
.faq-accordion .accordion-body{
  background:var(--panel);color:var(--text-2);font-size:14.8px;line-height:1.8;
  padding:6px 24px 24px 60px;position:relative;
}
.faq-accordion .accordion-collapse.show .accordion-body::before{
  content:"";position:absolute;left:22px;top:0;bottom:22px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(24,195,240,.15));
}

/* ============ CTA / 表单 ============ */
.cta-wrap{
  position:relative;border-radius:26px;overflow:hidden;
  border:1px solid rgba(24,195,240,.22);
  background:
    linear-gradient(120deg,rgba(5,10,20,.94) 0%,rgba(10,20,38,.9) 55%,rgba(24,195,240,.12) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:52px;
  box-shadow:var(--sh-3);
}
.cta-wrap::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(24,195,240,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(24,195,240,.05) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 20% 30%,#000,transparent 68%);
  mask-image:radial-gradient(circle at 20% 30%,#000,transparent 68%);
}
.cta-wrap > *{position:relative;z-index:2;}
.cta-list{margin-top:24px;display:grid;gap:12px;}
.cta-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);align-items:flex-start;}
.cta-list li i{color:var(--primary);margin-top:7px;font-size:12px;}
.form-card{
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-2);
}
.form-card h3{font-size:1.1rem;margin-bottom:6px;}
.form-card .form-note{font-size:13.5px;color:var(--text-3);margin-bottom:20px;}
.form-alert{
  display:none;padding:12px 16px;border-radius:var(--r-md);font-size:14px;margin-bottom:16px;
  background:rgba(53,208,127,.12);border:1px solid rgba(53,208,127,.36);color:#8BE7B4;
}
.form-alert.show{display:block;}
.form-alert.err{background:rgba(255,107,107,.12);border-color:rgba(255,107,107,.4);color:#FFB0B0;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:0;padding:72px 0 0;
  background:linear-gradient(180deg,rgba(5,10,20,.6),rgba(10,18,32,.95));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;font-weight:700;font-size:17px;color:var(--text);}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;font-weight:600;}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--primary);}
.footer-col .contact-item{font-size:14px;color:var(--text-2);display:flex;gap:9px;align-items:flex-start;}
.footer-col .contact-item i{color:var(--primary);margin-top:6px;font-size:12px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .links a{font-size:13px;color:var(--text-3);}
.footer-bottom .links a:hover{color:var(--primary);}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1030;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 24px;border-radius:999px;font-size:14.5px;font-weight:600;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#04121B;box-shadow:0 0 0 1px rgba(24,195,240,.4),0 14px 36px rgba(24,195,240,.42);
  opacity:0;visibility:hidden;transform:translateY(16px);
  transition:opacity .32s ease,transform .32s ease,visibility .32s,filter .2s;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{filter:brightness(1.08);color:#04121B;transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .proof-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  .container{padding:0 28px;}
  .section{padding:80px 0;}
  .hero{padding:120px 0 66px;min-height:auto;}
  .feature-sticky{position:static;margin-bottom:32px;}
  .steps{grid-template-columns:1fr;gap:26px;}
  .step{padding-left:22px;padding-right:0;}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .price-card.recommended{order:-1;}
  .cta-wrap{padding:36px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .news-card--lead{flex-direction:column;}
  .news-card--lead .news-thumb{flex:none;}
  .news-card--lead .news-thumb img{aspect-ratio:16/9;min-height:0;}
  .news-card--lead .news-body{padding:24px;}
}
@media (max-width:767.98px){
  .proof-grid{grid-template-columns:1fr;}
  .hero-stats{gap:18px 0;}
  .hero-stats .stat{padding:0 18px;}
  .hero-stats .stat:nth-child(3){border-left:0;padding-left:0;}
  .review-card{flex:0 0 82%;}
  .faq-accordion .accordion-button{padding:18px 18px 18px 52px;font-size:15px;}
  .faq-accordion .accordion-button::before{left:18px;}
  .faq-accordion .accordion-body{padding:6px 18px 20px 18px;}
  .faq-accordion .accordion-collapse.show .accordion-body::before{left:18px;}
}
@media (max-width:575.98px){
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .hero{padding:104px 0 56px;}
  .hero-cta{gap:10px;margin-bottom:34px;}
  .btn-glow,.btn-ghost{width:100%;}
  .hero-cta .btn-glow,.hero-cta .btn-ghost{width:100%;}
  .hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
  .hero-stats .stat{padding:0;}
  .hero-stats .stat + .stat{border-left:0;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;justify-content:center;padding:14px 20px;
    transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0);}
  .review-card{flex:0 0 88%;}
  .cta-wrap{padding:28px 20px;border-radius:20px;}
  .form-card{padding:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg:#050A14;
  --panel:#0A1220;
  --panel-2:#111C2E;
  --primary:#18C3F0;
  --primary-dark:#0E93BE;
  --accent:#6C5CFF;
  --amber:#FFB256;
  --ok:#35D07F;
  --err:#FF6B6B;
  --text:#E6EEF8;
  --muted:#9FB0C6;
  --dim:#6B7C93;
  --line:rgba(255,255,255,.08);
  --glass:rgba(14,24,40,.55);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-img:16px;
  --shadow-1:0 4px 18px rgba(0,0,0,.35);
  --shadow-2:0 14px 38px rgba(0,0,0,.45);
  --shadow-3:0 20px 60px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(24,195,240,.25),0 10px 34px rgba(24,195,240,.22);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
a:hover{color:var(--primary)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;letter-spacing:.005em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (max-width:991px){.container{padding:0 28px}}
@media (max-width:575px){.container{padding:0 20px}}

/* ---------- 导航 ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:linear-gradient(180deg,rgba(5,10,20,.76),rgba(5,10,20,.30));
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.06);
  box-shadow:0 6px 26px rgba(0,0,0,.28);
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-nav.scrolled{background:rgba(5,10,20,.9);border-bottom-color:var(--line);box-shadow:0 10px 32px rgba(0,0,0,.5)}
.nav-inner{display:flex;align-items:center;gap:20px;height:76px;transition:height .3s ease}
.site-nav.scrolled .nav-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;position:relative;z-index:101}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#031018;font-size:16px;
  box-shadow:0 0 0 1px rgba(24,195,240,.35),0 8px 22px rgba(24,195,240,.28);
}
.brand-name{font-size:17px;font-weight:700;white-space:nowrap}
.nav-links{display:flex;align-items:center;justify-content:center;gap:22px;flex:1;padding-left:12px}
.nav-links a{position:relative;font-size:15px;color:var(--muted);padding:6px 2px;white-space:nowrap}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active::before{
  content:"";position:absolute;left:-13px;top:9px;bottom:9px;width:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(24,195,240,.85);
}
.nav-drawer-cta{display:none!important}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-search{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted);
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.nav-search:hover{color:var(--primary);border-color:rgba(24,195,240,.4);background:rgba(24,195,240,.08)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;margin-left:auto;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);
  position:relative;z-index:101;
}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  color:#03131B;background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  box-shadow:0 0 0 1px rgba(24,195,240,.3),0 10px 26px rgba(24,195,240,.22);
  transition:transform .2s ease,box-shadow .25s ease,filter .2s ease,color .2s ease;
}
.btn-glow:hover{color:#03131B;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(24,195,240,.45),0 16px 34px rgba(24,195,240,.34)}
.btn-glow:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  color:var(--text);background:rgba(255,255,255,.04);
  border:1px solid rgba(24,195,240,.35);
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .25s ease;
}
.btn-ghost:hover{color:var(--text);background:rgba(24,195,240,.12);border-color:var(--primary);transform:translateY(-2px);box-shadow:0 10px 26px rgba(24,195,240,.2)}
.btn-ghost:active{transform:translateY(1px)}

@media (max-width:991px){
  .nav-toggle{display:grid;place-items:center}
  .nav-actions .btn-glow{display:none}
  .nav-links{
    position:fixed;inset:0;z-index:100;
    flex-direction:column;justify-content:flex-start;align-items:stretch;gap:4px;
    padding:104px 24px 32px;
    background:rgba(5,10,20,.97);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    transform:translateY(-100%);opacity:0;pointer-events:none;
    transition:transform .32s ease,opacity .32s ease;overflow-y:auto;
  }
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{width:100%;padding:14px 4px;font-size:17px;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav-links a::after,.nav-links a.active::before{display:none}
  .nav-links a.active{color:var(--primary)}
  .nav-drawer-cta{display:inline-flex!important;margin-top:auto;border-bottom:0!important;padding:15px 22px!important;font-size:16px!important}
}

/* ---------- 文章页头 ---------- */
.article-hero{
  position:relative;
  padding:148px 0 56px;
  background:linear-gradient(180deg,rgba(5,10,20,.84),rgba(5,10,20,.96)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(24,195,240,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(24,195,240,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 20% 20%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 20% 20%,#000,transparent 78%);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb-trail{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:20px}
.breadcrumb-trail a{color:var(--muted)}
.breadcrumb-trail a:hover{color:var(--primary)}
.breadcrumb-trail .sep{color:rgba(107,124,147,.7)}
.breadcrumb-trail .now{color:var(--text);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:12px;font-weight:500;letter-spacing:.02em;
  background:rgba(24,195,240,.12);border:1px solid rgba(24,195,240,.32);color:#7FDCF7;
}
.article-title{
  font-size:clamp(1.75rem,3.6vw,2.7rem);
  font-weight:700;line-height:1.3;margin-top:18px;max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:22px;font-size:14px;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center;gap:8px}
.article-meta i{color:var(--primary);font-size:13px}

/* ---------- 文章主体 ---------- */
.article-wrap{padding:64px 0 84px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.article-main{max-width:820px;width:100%}
.article-panel{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:40px 38px;
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-1);
}
.article-body{font-size:16.5px;line-height:1.85;color:#DCE6F2}
.article-body p{margin:0 0 20px}
.article-body h2{position:relative;font-size:1.45rem;font-weight:650;margin:40px 0 16px;padding-left:16px;color:var(--text)}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.30em;bottom:.30em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));box-shadow:0 0 12px rgba(24,195,240,.5);
}
.article-body h3{font-size:1.16rem;font-weight:600;margin:28px 0 12px;color:var(--text)}
.article-body h4{font-size:1.02rem;font-weight:600;margin:22px 0 10px;color:var(--text)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body ul li{list-style:disc;margin:8px 0}
.article-body ol li{list-style:decimal;margin:8px 0}
.article-body li::marker{color:var(--primary)}
.article-body img{border-radius:var(--r-img);margin:24px 0 10px;border:1px solid rgba(24,195,240,.2);box-shadow:0 12px 34px rgba(0,0,0,.45)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--dim);text-align:center;line-height:1.6}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;color:var(--muted);
  background:var(--panel);border-left:3px solid var(--primary);border-radius:0 var(--r-md) var(--r-md) 0;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:0}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border:0}
.article-body thead th{background:rgba(24,195,240,.1);color:#BDE9F8;font-weight:600}
.article-body tbody tr{border-top:1px solid rgba(255,255,255,.06)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.article-body a{color:var(--primary);border-bottom:1px dashed rgba(24,195,240,.45)}
.article-body a:hover{color:#7FDCF7;border-bottom-color:#7FDCF7}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;padding:2px 7px;border-radius:6px;
  background:rgba(108,92,255,.14);color:#C9C2FF;border:1px solid rgba(108,92,255,.25);
}
.article-body pre{
  margin:22px 0;padding:18px 20px;border-radius:var(--r-md);overflow-x:auto;
  background:#060D18;border:1px solid var(--line);color:#CBD9E8;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;border:0;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.article-empty{text-align:center;padding:26px 10px 34px}
.article-empty i{font-size:34px;color:var(--primary);opacity:.8}
.article-empty h2{font-size:1.3rem;margin:16px 0 10px;font-weight:650}
.article-empty p{color:var(--muted);font-size:15px;max-width:460px;margin:0 auto 22px}

.article-foot{
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  font-size:12px;color:var(--muted);background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.tag:hover{color:var(--primary);border-color:rgba(24,195,240,.4);background:rgba(24,195,240,.08)}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.back-link:hover{color:var(--primary)}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:grid;gap:18px}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow-1)}
.side-card h3{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--muted);margin-bottom:14px;text-transform:none}
.side-list{display:grid;gap:8px}
.side-list a{
  display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);
  padding:10px 12px;border-radius:10px;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,border-color .2s ease;
}
.side-list a i{color:var(--primary);font-size:12px}
.side-list a:hover{color:var(--text);background:rgba(24,195,240,.08);border-color:rgba(24,195,240,.28);transform:translateX(3px)}
.side-note{font-size:13px;color:var(--dim);line-height:1.7}

/* ---------- 延伸阅读 ---------- */
.recommend-section{padding:0 0 88px}
.section-head{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;justify-content:space-between;margin-bottom:32px}
.section-head h2{font-size:clamp(1.35rem,2.4vw,1.9rem);font-weight:650}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--primary)}
.text-link:hover{color:#7FDCF7;gap:12px}

.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.mini-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .28s ease,border-color .25s ease;
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(24,195,240,.3);box-shadow:var(--shadow-2)}
.mini-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#0D1626}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.mini-card:hover .thumb img{transform:scale(1.04)}
.mini-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.mini-card h3{font-size:16px;font-weight:600;line-height:1.5}
.mini-card p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card .foot{margin-top:auto;font-size:13px;color:var(--dim);display:flex;align-items:center;gap:8px}
.mini-card .foot i{color:var(--primary);font-size:12px}

/* ---------- 结尾 CTA ---------- */
.cta-section{padding:0 0 96px}
.cta-band{
  position:relative;overflow:hidden;text-align:center;
  padding:52px 40px;border-radius:22px;
  background:linear-gradient(120deg,rgba(24,195,240,.14),rgba(108,92,255,.12)),var(--panel);
  border:1px solid rgba(24,195,240,.22);
  box-shadow:var(--glow);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,195,240,.28),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(1.4rem,2.6vw,2rem);font-weight:650;position:relative;z-index:2}
.cta-band p{position:relative;z-index:2;max-width:620px;margin:14px auto 28px;color:var(--muted);font-size:15px}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 24px;border-radius:999px;font-size:15px;font-weight:600;color:#03131B;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  box-shadow:0 0 0 1px rgba(24,195,240,.35),0 14px 34px rgba(24,195,240,.32);
  opacity:0;transform:translateY(16px);pointer-events:none;
  transition:opacity .35s ease,transform .35s ease,filter .2s ease;
}
.float-cta.show{opacity:1;transform:none;pointer-events:auto}
.float-cta:hover{color:#03131B;filter:brightness(1.08);transform:translateY(-2px)}
@media (max-width:575px){
  .float-cta{left:0;right:0;bottom:0;border-radius:0;justify-content:center;padding:13px 16px;font-size:14px}
  .float-cta.show{transform:none}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:linear-gradient(180deg,rgba(10,18,32,.75),var(--bg));
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  backdrop-filter:blur(10px);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:16px}
.footer-col p{font-size:14px;color:var(--muted);line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:11px}
.footer-col ul a{font-size:14px;color:var(--muted)}
.footer-col ul a:hover{color:var(--primary)}
.contact-item{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--muted);line-height:1.7}
.contact-item i{color:var(--primary);margin-top:5px;font-size:13px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--dim);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:20px}
.footer-bottom .links a{color:var(--dim)}
.footer-bottom .links a:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .article-side{display:none}
  .article-main{max-width:100%}
}
@media (max-width:991px){
  .article-hero{padding:126px 0 48px}
  .article-wrap{padding:52px 0 68px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .min-height-fix{min-height:auto}
}
@media (max-width:767px){
  .article-panel{padding:28px 22px}
  .cta-band{padding:40px 22px}
  .recommend-section{padding-bottom:64px}
  .cta-section{padding-bottom:72px}
}
@media (max-width:575px){
  .article-hero{padding:112px 0 40px}
  .article-meta{gap:14px;font-size:13px}
  .grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .article-foot{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .mini-card:hover,.float-cta:hover,.btn-glow:hover,.btn-ghost:hover{transform:none!important}
}

/* roulang page: category1 */
:root{
  --bg:#050A14;
  --panel:#0A1220;
  --panel-2:#111C2E;
  --primary:#18C3F0;
  --primary-dark:#0E93BE;
  --violet:#6C5CFF;
  --amber:#FFB256;
  --ok:#35D07F;
  --err:#FF6B6B;
  --text:#E6EEF8;
  --text-2:#9FB0C6;
  --text-3:#6B7C93;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --glass:rgba(14,24,40,.55);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-img:16px;
  --sh-1:0 4px 18px rgba(0,0,0,.35);
  --sh-2:0 14px 38px rgba(0,0,0,.45);
  --sh-3:0 20px 60px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(24,195,240,.25),0 10px 34px rgba(24,195,240,.22);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:#5AD8FA;}
img{max-width:100%;display:block;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:.005em;line-height:1.3;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media (max-width:1199.98px){ .container{padding-left:28px;padding-right:28px;} }
@media (max-width:575.98px){ .container{padding-left:20px;padding-right:20px;} }

/* ---------- 导航 ---------- */
.site-nav{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1050;
  background:rgba(10,18,32,.42);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.06);
  box-shadow:0 8px 30px rgba(0,0,0,.28);
  transition:background .3s ease,height .3s ease,border-color .3s ease;
}
.site-nav.is-scrolled{
  background:rgba(5,10,20,.92);
  border-bottom-color:var(--line);
  box-shadow:0 6px 22px rgba(0,0,0,.4);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:22px;
  height:76px;
  transition:height .3s ease;
}
.site-nav.is-scrolled .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 100%);
  color:#04121B;
  font-size:16px;
  box-shadow:0 0 0 1px rgba(24,195,240,.3),0 6px 18px rgba(24,195,240,.28);
}
.brand-name{
  font-size:17px;
  font-weight:650;
  color:var(--text);
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links > a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:10px;
  white-space:nowrap;
}
.nav-links > a:hover{color:var(--text);background:rgba(24,195,240,.08);}
.nav-links > a.active{color:var(--primary);}
.nav-links > a.active::before{
  content:"";
  position:absolute;
  left:2px;top:50%;
  transform:translateY(-50%);
  width:2px;height:18px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(24,195,240,.8);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-search{
  width:38px;height:38px;
  border-radius:11px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  cursor:pointer;
  transition:.22s ease;
}
.nav-search:hover{color:var(--primary);border-color:rgba(24,195,240,.5);}
.btn-glow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border-radius:var(--r-sm);
  border:1px solid rgba(24,195,240,.5);
  background:linear-gradient(135deg,var(--primary) 0%,#2E8CFF 55%,var(--violet) 130%);
  color:#04121B;
  font-size:14.5px;
  font-weight:650;
  box-shadow:var(--glow);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.btn-glow:hover{color:#04121B;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(24,195,240,.4),0 16px 40px rgba(24,195,240,.32);}
.btn-glow:active{transform:translateY(1px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.02);
  color:var(--text);
  font-size:14.5px;
  font-weight:600;
  transition:.22s ease;
}
.btn-ghost:hover{color:var(--primary);border-color:rgba(24,195,240,.55);background:rgba(24,195,240,.06);transform:translateY(-2px);}
.btn-block{width:100%;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text);
  font-size:16px;
  cursor:pointer;
  position:relative;
  z-index:1060;
}
.nav-drawer-cta{display:none;}

/* ---------- 页头小 Hero ---------- */
.page-hero{
  position:relative;
  padding:158px 0 76px;
  background-image:linear-gradient(180deg,rgba(5,10,20,.86) 0%,rgba(5,10,20,.94) 62%,var(--bg) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;inset: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:62px 62px;
  mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.crumbs{
  display:flex;align-items:center;gap:8px;
  font-size:13.5px;
  color:var(--text-3);
  margin-bottom:18px;
}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--primary);}
.crumbs i{font-size:10px;color:var(--text-3);}
.crumbs .current{color:var(--primary);}
.page-hero h1{
  font-size:clamp(1.85rem,3.6vw,2.7rem);
  font-weight:700;
  line-height:1.24;
  margin-bottom:18px;
}
.page-hero .lede{
  font-size:16.5px;
  color:var(--text-2);
  max-width:600px;
  margin-bottom:26px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;
  border-radius:999px;
  border:1px solid rgba(24,195,240,.28);
  background:rgba(24,195,240,.08);
  color:var(--primary);
  font-size:12.5px;
  font-weight:500;
}
.tag.violet{border-color:rgba(108,92,255,.35);background:rgba(108,92,255,.1);color:#A79DFF;}
.tag.amber{border-color:rgba(255,178,86,.32);background:rgba(255,178,86,.1);color:var(--amber);}
.hero-thumb{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(24,195,240,.2);
  box-shadow:var(--glow);
}
.hero-thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  background:var(--panel-2);
}
.hero-thumb .status{
  position:absolute;left:14px;bottom:14px;
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;
  border-radius:999px;
  background:rgba(5,10,20,.78);
  border:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-2);
  backdrop-filter:blur(10px);
}
.dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px rgba(53,208,127,.9);}

/* ---------- 主体：sticky 目录 + 长内容 ---------- */
.content-wrap{padding:76px 0 96px;}
.cat-grid{
  display:grid;
  grid-template-columns:250px minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.side-toc{
  position:sticky;
  top:104px;
  padding:22px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--sh-1);
}
.side-toc h4{
  font-size:13px;
  font-weight:600;
  color:var(--text-3);
  letter-spacing:.04em;
  margin-bottom:14px;
}
.side-toc ul{display:grid;gap:2px;}
.side-toc a{
  display:block;
  padding:9px 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
}
.side-toc a:hover{color:var(--primary);background:rgba(24,195,240,.07);border-left-color:rgba(24,195,240,.6);}
.toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}
.content-main{display:grid;gap:56px;min-width:0;}
.block h2{
  font-size:clamp(1.3rem,2.2vw,1.7rem);
  margin-bottom:16px;
  padding-left:14px;
  position:relative;
}
.block h2::before{
  content:"";
  position:absolute;left:0;top:.22em;
  width:3px;height:1.05em;
  border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
  box-shadow:0 0 12px rgba(24,195,240,.7);
}
.block p{color:var(--text-2);}
.lead-strong{color:var(--text);font-weight:600;}

/* 步骤流程 */
.steps{display:grid;gap:6px;margin-top:8px;}
.step{
  position:relative;
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:18px;
  padding:20px 0 20px 0;
}
.step + .step{border-top:1px solid var(--line);}
.step-num{
  font-family:system-ui,sans-serif;
  font-size:22px;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.02em;
  padding-left:16px;
  position:relative;
}
.step-num::before{
  content:"";
  position:absolute;left:0;top:6px;bottom:-26px;
  width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(108,92,255,.15));
}
.step:last-child .step-num::before{bottom:0;}
.step h3{font-size:1.06rem;margin-bottom:6px;}
.step p{font-size:14.5px;color:var(--text-2);margin:0;}

/* 两列特性卡 */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin-top:6px;
}
.f-card{
  padding:24px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(17,28,46,.9),rgba(10,18,32,.9));
  box-shadow:var(--sh-1);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.f-card:hover{transform:translateY(-4px);border-color:rgba(24,195,240,.32);box-shadow:var(--sh-2);}
.f-icon{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:13px;
  border:1.5px solid rgba(24,195,240,.55);
  color:var(--primary);
  font-size:16px;
  margin-bottom:16px;
  background:rgba(24,195,240,.07);
}
.f-card h3{font-size:1.05rem;margin-bottom:8px;}
.f-card p{font-size:14.5px;color:var(--text-2);margin:0;}

/* 图文交替 */
.media-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
}
.media-row.reverse .media-pic{order:2;}
.media-pic{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid rgba(24,195,240,.2);
  box-shadow:var(--sh-1),0 0 26px rgba(24,195,240,.14);
}
.media-pic img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--panel-2);transition:transform .4s ease;}
.media-pic:hover img{transform:scale(1.04);}
.media-text h3{font-size:1.16rem;margin-bottom:12px;}
.media-text p{font-size:14.8px;color:var(--text-2);}
.check-list{display:grid;gap:10px;margin-top:14px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--text-2);
}
.check-list i{color:var(--ok);margin-top:5px;font-size:13px;}

/* 情况提示卡 */
.note-cards{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
  margin-top:6px;
}
.n-card{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--panel);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.n-card:hover{transform:translateY(-4px);border-color:rgba(24,195,240,.3);box-shadow:var(--sh-2);}
.n-cover{position:relative;}
.n-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--panel-2);}
.n-badge{
  position:absolute;left:12px;top:12px;
  padding:5px 11px;
  border-radius:999px;
  font-size:12px;
  font-weight:500;
  background:rgba(5,10,20,.78);
  border:1px solid rgba(24,195,240,.35);
  color:var(--primary);
  backdrop-filter:blur(8px);
}
.n-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.n-body h3{font-size:1.02rem;}
.n-body p{font-size:14.2px;color:var(--text-2);margin:0;}
.n-more{
  margin-top:auto;
  font-size:13.5px;
  color:var(--primary);
  display:inline-flex;align-items:center;gap:7px;
}
.n-more:hover{gap:11px;}

/* FAQ */
.faq-wrap{max-width:100%;}
.accordion-item{
  background:var(--panel)!important;
  border:1px solid var(--line)!important;
  border-radius:var(--r-md)!important;
  margin-bottom:12px;
  overflow:hidden;
}
.accordion-button{
  background:transparent!important;
  color:var(--text)!important;
  font-weight:600;
  font-size:15.5px;
  padding:18px 20px!important;
  box-shadow:none!important;
  gap:14px;
}
.accordion-button:not(.collapsed){
  background:rgba(24,195,240,.06)!important;
  color:var(--primary)!important;
  box-shadow:inset 3px 0 0 var(--primary)!important;
}
.accordion-button::after{
  background-image:none!important;
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  width:auto;height:auto;
  color:var(--text-3);
  transition:transform .25s ease,color .25s ease;
}
.accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  color:var(--primary);
}
.accordion-body{
  background:var(--panel-2);
  color:var(--text-2);
  font-size:14.6px;
  line-height:1.8;
  padding:18px 22px 22px!important;
}
.faq-idx{
  font-family:system-ui,sans-serif;
  font-size:13px;
  font-weight:700;
  color:var(--text-3);
  min-width:26px;
}

/* CTA */
.cta-block{
  position:relative;
  padding:46px 44px;
  border-radius:var(--r-lg);
  border:1px solid rgba(24,195,240,.22);
  background:linear-gradient(135deg,rgba(24,195,240,.12) 0%,rgba(108,92,255,.12) 52%,rgba(10,18,32,.9) 100%);
  box-shadow:var(--glow);
  overflow:hidden;
}
.cta-block::after{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(24,195,240,.28),transparent 68%);
  pointer-events:none;
}
.cta-block h2{
  font-size:clamp(1.28rem,2.2vw,1.65rem);
  margin-bottom:12px;
  padding:0;
}
.cta-block h2::before{display:none;}
.cta-block p{color:var(--text-2);max-width:640px;margin-bottom:24px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2;}
.cta-meta{
  margin-top:20px;
  display:flex;flex-wrap:wrap;gap:20px;
  font-size:13px;color:var(--text-3);
}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,18,32,.9),rgba(5,10,20,.98));
  padding:64px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:38px;
  border-bottom:1px solid var(--line);
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:16.5px;font-weight:650;
  color:var(--text);
  margin-bottom:14px;
}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.75;}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  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);}
.contact-item{display:flex;gap:10px;font-size:13.8px;color:var(--text-2);align-items:flex-start;}
.contact-item i{color:var(--primary);margin-top:5px;font-size:13px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;
  padding-top:22px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:20px;}
.footer-bottom .links a{font-size:13px;color:var(--text-3);}
.footer-bottom .links a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .cat-grid{grid-template-columns:220px minmax(0,1fr);gap:40px;}
  .note-cards{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;}
}
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto;}
  .nav-actions .nav-search{display:none;}
  .nav-actions .btn-glow{display:none;}
  .nav-links{
    position:fixed;
    inset:0;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    gap:6px;
    margin:0;
    padding:104px 32px 130px;
    background:rgba(5,10,20,.97);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .26s ease,transform .26s ease,visibility .26s;
    z-index:1045;
    overflow-y:auto;
  }
  .nav-links.open{opacity:1;visibility:visible;pointer-events:auto;transform:none;}
  .nav-links > a{font-size:16.5px;padding:12px 18px;}
  .nav-links > a.active::before{height:20px;}
  .nav-drawer-cta{
    display:flex!important;
    position:fixed;
    left:32px;right:32px;bottom:32px;
    justify-content:center;
  }
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero{padding:132px 0 60px;}
  .cat-grid{grid-template-columns:1fr;gap:36px;}
  .side-toc{position:static;}
  .media-row{grid-template-columns:1fr;gap:26px;}
  .media-row.reverse .media-pic{order:0;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px;}
}
@media (max-width:767.98px){
  .content-wrap{padding:56px 0 72px;}
  .content-main{gap:44px;}
  .note-cards{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:1fr;}
  .cta-block{padding:34px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;}
  .page-hero{padding:118px 0 52px;}
  .step{grid-template-columns:52px minmax(0,1fr);gap:14px;}
  .step-num{font-size:19px;padding-left:14px;}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%;}
  .cta-meta{flex-direction:column;gap:10px;}
  .footer-bottom .links{flex-wrap:wrap;gap:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --bg:#050A14;
  --panel:#0A1220;
  --panel-2:#111C2E;
  --primary:#18C3F0;
  --primary-dark:#0E93BE;
  --accent:#6C5CFF;
  --amber:#FFB256;
  --ok:#35D07F;
  --err:#FF6B6B;
  --text:#E6EEF8;
  --muted:#9FB0C6;
  --dim:#6B7C93;
  --border:rgba(255,255,255,.08);
  --border-mid:rgba(255,255,255,.14);
  --border-glow:rgba(24,195,240,.30);
  --glass:rgba(14,24,40,.55);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-1:0 4px 18px rgba(0,0,0,.35);
  --shadow-2:0 14px 38px rgba(0,0,0,.45);
  --shadow-3:0 20px 60px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(24,195,240,.25),0 10px 34px rgba(24,195,240,.22);
  --navh:76px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 10% -10%,rgba(24,195,240,.14),transparent 62%),
    radial-gradient(760px 460px at 92% 4%,rgba(108,92,255,.13),transparent 60%),
    var(--bg);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:#5CD8FA;}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:0;}
p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(24,195,240,.28);}

/* ============ 容器与板块 ============ */
.container,.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:104px 0;position:relative;}
.section-sm{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.02em;
  color:var(--primary);
  background:rgba(24,195,240,.10);
  border:1px solid rgba(24,195,240,.24);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:16px;
}
.eyebrow.violet{color:#B7AEFF;background:rgba(108,92,255,.12);border-color:rgba(108,92,255,.28);}
h1{font-size:clamp(2rem,4.4vw,3.35rem);font-weight:700;line-height:1.2;}
h2{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:650;line-height:1.3;margin-bottom:14px;}
h3{font-size:1.25rem;font-weight:600;line-height:1.4;}
.lead{color:var(--muted);font-size:1.02rem;}
.text-dim{color:var(--dim);font-size:14px;}

/* ============ 按钮 ============ */
.btn-glow,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease,background .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#04121B;
  box-shadow:0 8px 26px rgba(24,195,240,.30);
}
.btn-glow:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 38px rgba(24,195,240,.42);color:#04121B;}
.btn-glow:active{transform:translateY(1px);box-shadow:0 6px 18px rgba(24,195,240,.28);}
.btn-ghost{
  background:rgba(255,255,255,.02);
  color:var(--text);
  border-color:var(--border-mid);
}
.btn-ghost:hover{border-color:var(--border-glow);color:#fff;background:rgba(24,195,240,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-soft{
  background:rgba(24,195,240,.10);
  color:var(--primary);
  border-color:rgba(24,195,240,.24);
  padding:10px 20px;font-size:14px;
}
.btn-soft:hover{background:rgba(24,195,240,.18);color:#7FE1FF;transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;}
.link-arrow i{transition:transform .25s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 导航 ============ */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(10,18,32,.48);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
  box-shadow:0 10px 34px rgba(0,0,0,.28);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-nav.scrolled{
  background:rgba(5,10,20,.90);
  border-bottom-color:rgba(255,255,255,.10);
  box-shadow:0 8px 26px rgba(0,0,0,.5);
}
.nav-inner{display:flex;align-items:center;gap:22px;height:76px;transition:height .3s ease;}
.site-nav.scrolled .nav-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:16px;letter-spacing:.01em;flex-shrink:0;}
.brand:hover{color:#fff;}
.brand-mark{
  width:36px;height:36px;flex:none;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,rgba(24,195,240,.22),rgba(108,92,255,.22));
  border:1px solid rgba(24,195,240,.34);
  color:var(--primary);
  font-size:15px;
  box-shadow:0 0 0 1px rgba(24,195,240,.14),0 6px 18px rgba(24,195,240,.18);
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.nav-links > a{
  position:relative;
  padding:9px 13px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--muted);
  white-space:nowrap;
  transition:color .22s ease,background .22s ease;
}
.nav-links > a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(24,195,240,0));
  opacity:0;transform:scaleX(.4);transform-origin:left;
  transition:opacity .25s ease,transform .25s ease;
}
.nav-links > a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-links > a:hover::after{opacity:1;transform:scaleX(1);}
.nav-links > a.active{color:#fff;background:rgba(24,195,240,.10);}
.nav-links > a.active::before{
  content:"";position:absolute;left:3px;top:50%;transform:translateY(-50%);
  width:2px;height:16px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(24,195,240,.8);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px;}
.nav-search{
  width:38px;height:38px;border-radius:11px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--border);
  color:var(--muted);
  display:grid;place-items:center;
  transition:.22s ease;
}
.nav-search:hover{color:var(--primary);border-color:var(--border-glow);background:rgba(24,195,240,.08);}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:11px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  color:var(--text);font-size:16px;
  margin-left:auto;
}
.nav-drawer-cta{display:none;}

/* ============ 页头 ============ */
.page-head{
  position:relative;
  padding:calc(var(--navh) + 66px) 0 74px;
  overflow:hidden;
  border-bottom:1px solid var(--border);
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,10,20,.72),rgba(5,10,20,.94)),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.55;
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--dim);margin-bottom:22px;flex-wrap:wrap;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--primary);}
.crumbs span.sep{color:rgba(255,255,255,.22);}
.page-head-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.page-head h1{max-width:16em;}
.page-head h1 em{font-style:normal;color:var(--primary);}
.page-head p.lead{margin-top:20px;max-width:44em;}
.head-meta{display:flex;gap:26px;flex-wrap:wrap;margin-top:30px;font-size:14px;color:var(--muted);}
.head-meta span{display:inline-flex;align-items:center;gap:8px;}
.head-meta i{color:var(--primary);}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(53,208,127,.16);display:inline-block;}
.head-thumb{
  position:relative;border-radius:16px;overflow:hidden;
  border:1px solid rgba(24,195,240,.22);
  box-shadow:var(--glow);
}
.head-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--panel-2);}
.head-thumb .thumb-cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;font-size:13px;color:#D6E4F5;
  background:linear-gradient(0deg,rgba(5,10,20,.92),rgba(5,10,20,0));
}

/* ============ 分段锚点条 ============ */
.anchorbar{
  position:sticky;top:64px;z-index:1020;
  background:rgba(5,10,20,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.anchorbar-inner{
  display:flex;align-items:center;gap:10px;
  padding-top:14px;padding-bottom:14px;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchorbar-inner::-webkit-scrollbar{display:none;}
.anchor-link{
  flex:none;
  padding:8px 16px;
  border-radius:999px;
  font-size:14px;
  color:var(--muted);
  background:rgba(255,255,255,.03);
  border:1px solid var(--border);
  transition:.22s ease;
}
.anchor-link:hover{color:#fff;border-color:var(--border-glow);background:rgba(24,195,240,.10);}
.anchor-link.active{
  color:#04121B;font-weight:600;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  border-color:transparent;
  box-shadow:0 6px 18px rgba(24,195,240,.28);
}

/* ============ 卡片墙 ============ */
.card-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.wall-card{
  position:relative;
  background:linear-gradient(180deg,rgba(17,28,46,.72),rgba(10,18,32,.72));
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
  display:flex;flex-direction:column;gap:14px;
}
.wall-card:hover{transform:translateY(-4px);border-color:rgba(24,195,240,.34);box-shadow:var(--shadow-2),0 0 0 1px rgba(24,195,240,.16);}
.wall-card.with-media{padding:0;overflow:hidden;}
.wall-card .wl-media{position:relative;overflow:hidden;border-bottom:1px solid var(--border);}
.wall-card .wl-media img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--panel-2);transition:transform .5s ease;}
.wall-card.with-media:hover .wl-media img{transform:scale(1.04);}
.wall-card .wl-body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:14px;flex:1;}
.wl-head{display:flex;align-items:center;gap:12px;}
.wl-icon{
  width:40px;height:40px;flex:none;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(24,195,240,.10);
  border:1px solid rgba(24,195,240,.24);
  color:var(--primary);font-size:16px;
}
.wl-icon.violet{background:rgba(108,92,255,.12);border-color:rgba(108,92,255,.28);color:#B7AEFF;}
.wl-card p{color:var(--muted);font-size:14.5px;}
.check-list{display:grid;gap:9px;margin-top:2px;}
.check-list li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--muted);}
.check-list i{color:var(--ok);font-size:12px;margin-top:6px;}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:6px;}
.tag{
  font-size:12px;font-weight:500;
  padding:4px 11px;border-radius:999px;
  color:var(--muted);
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
}
.tag.tag-cyan{color:#8EE6FF;background:rgba(24,195,240,.10);border-color:rgba(24,195,240,.24);}
.tag.tag-violet{color:#B7AEFF;background:rgba(108,92,255,.12);border-color:rgba(108,92,255,.26);}
.tag.tag-amber{color:#FFD09B;background:rgba(255,178,86,.12);border-color:rgba(255,178,86,.28);}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--border);}
.flow-item{
  position:relative;
  padding:32px 28px 8px 28px;
  border-left:1px solid var(--border);
}
.flow-item:first-child{border-left:none;padding-left:0;}
.flow-no{
  font-family:system-ui,sans-serif;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--primary);
  display:block;margin-bottom:12px;
}
.flow-item h3{font-size:1.05rem;margin-bottom:10px;}
.flow-item p{color:var(--muted);font-size:14.5px;}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(24,195,240,.75),rgba(108,92,255,.45),rgba(24,195,240,.05));
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:-34px;top:22px;
  width:16px;height:16px;border-radius:50%;
  background:var(--panel);
  border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(24,195,240,.12);
}
.tl-card{
  background:linear-gradient(180deg,rgba(17,28,46,.66),rgba(10,18,32,.66));
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:22px 24px;
  box-shadow:var(--shadow-1);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.tl-card:hover{border-color:rgba(24,195,240,.30);transform:translateX(4px);box-shadow:var(--shadow-2);}
.tl-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap;}
.ver-badge{
  font-family:system-ui,sans-serif;
  font-size:12.5px;font-weight:600;
  padding:3px 11px;border-radius:999px;
  color:#8EE6FF;background:rgba(24,195,240,.12);
  border:1px solid rgba(24,195,240,.26);
}
.tl-date{font-size:13px;color:var(--dim);font-family:system-ui,sans-serif;}
.tl-card h3{font-size:1.05rem;margin-bottom:8px;}
.tl-card p{color:var(--muted);font-size:14.5px;}

/* ============ 数据条 ============ */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(17,28,46,.52),rgba(10,18,32,.52));
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.stat{padding:34px 28px;border-left:1px solid var(--border);}
.stat:first-child{border-left:none;}
.stat-num{
  font-family:system-ui,sans-serif;
  font-size:2.5rem;font-weight:700;line-height:1.1;
  background:linear-gradient(135deg,#7FE1FF,#18C3F0 55%,#6C5CFF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-num small{font-size:14px;font-weight:500;color:var(--muted);margin-left:4px;-webkit-text-fill-color:var(--muted);}
.stat p{margin-top:10px;color:var(--muted);font-size:14px;}

/* ============ 通道卡 ============ */
.channels{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.chan-card{
  background:linear-gradient(180deg,rgba(17,28,46,.7),rgba(10,18,32,.7));
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:28px 26px;
  display:flex;flex-direction:column;gap:16px;
  box-shadow:var(--shadow-1);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.chan-card:hover{transform:translateY(-4px);border-color:rgba(24,195,240,.32);box-shadow:var(--shadow-2);}
.chan-card.recommended{
  border-color:rgba(24,195,240,.42);
  box-shadow:var(--glow);
  position:relative;
}
.chan-card .chan-flag{
  position:absolute;top:-12px;right:20px;
  font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:999px;
  color:#2A1704;background:linear-gradient(135deg,#FFCB85,var(--amber));
  box-shadow:0 6px 18px rgba(255,178,86,.30);
}
.chan-card h3{font-size:1.15rem;}
.chan-card .chan-sub{color:var(--dim);font-size:13.5px;}
.chan-card .btn-ghost,.chan-card .btn-glow{margin-top:auto;}

/* ============ FAQ ============ */
.faq-acc{display:grid;gap:14px;}
.faq-acc .accordion-item{
  background:linear-gradient(180deg,rgba(17,28,46,.62),rgba(10,18,32,.62));
  border:1px solid var(--border) !important;
  border-radius:var(--r-md) !important;
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(24,195,240,.30) !important;
  box-shadow:var(--shadow-2);
}
.faq-acc .accordion-header{margin:0;}
.faq-acc .accordion-button{
  background:transparent !important;
  color:var(--text) !important;
  font-size:16px;font-weight:600;
  padding:20px 22px;
  gap:14px;
  box-shadow:none !important;
  border-radius:0 !important;
}
.faq-acc .accordion-button .faq-no{
  font-family:system-ui,sans-serif;
  font-size:13px;font-weight:600;color:var(--primary);
  flex:none;
}
.faq-acc .accordion-button::after{
  background-image:none !important;
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:12px;
  width:28px;height:28px;
  display:grid;place-items:center;
  border-radius:9px;
  border:1px solid var(--border);
  color:var(--primary);
  transition:transform .25s ease,background .25s ease;
  margin-left:auto;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  content:"\f068";
  transform:rotate(180deg);
  background:rgba(24,195,240,.12);
  border-color:rgba(24,195,240,.28);
}
.faq-acc .accordion-button:focus{box-shadow:none !important;border-color:transparent !important;}
.faq-acc .accordion-body{
  padding:2px 22px 24px 22px;
  color:var(--muted);
  font-size:14.5px;
  line-height:1.8;
  background:var(--panel);
  border-top:1px solid var(--border);
  padding-top:20px;
}
.faq-acc .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--primary);border-radius:0 3px 3px 0;
  box-shadow:0 0 12px rgba(24,195,240,.7);
}
.faq-acc .accordion-button{position:relative;}

/* ============ CTA / 表单 ============ */
.cta-panel{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;
  background:linear-gradient(150deg,rgba(17,28,46,.82),rgba(10,18,32,.86));
  border:1px solid rgba(24,195,240,.20);
  border-radius:22px;
  padding:48px;
  box-shadow:var(--shadow-3);
  position:relative;
  overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,92,255,.28),transparent 66%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;}
.cta-copy h2{margin-bottom:16px;}
.cta-copy p{color:var(--muted);margin-bottom:22px;}
.cta-points{display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;color:var(--muted);font-size:14.5px;}
.cta-points i{color:var(--primary);margin-top:6px;font-size:12px;}
.form-card{
  position:relative;z-index:2;
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:26px;
}
.form-alert{
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:12px;
  font-size:14px;margin-bottom:18px;
  background:rgba(53,208,127,.12);
  border:1px solid rgba(53,208,127,.32);
  color:#9DEBC2;
}
.form-alert[hidden]{display:none;}
.field{display:grid;gap:8px;margin-bottom:16px;}
.field label{font-size:13.5px;color:var(--muted);}
.field input,.field textarea,.field select{
  width:100%;
  background:rgba(5,10,20,.72);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-md);
  color:var(--text);
  padding:12px 14px;
  font-size:14.5px;
  font-family:inherit;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field textarea{min-height:104px;resize:vertical;}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(24,195,240,.22);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(107,124,147,.9);}
.form-note{font-size:12.5px;color:var(--dim);margin-top:12px;line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px;
  background:linear-gradient(180deg,rgba(10,18,32,.86),rgba(5,10,20,.96));
  border-top:1px solid var(--border);
  padding:72px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;margin-bottom:16px;}
.footer-col h4{font-size:14.5px;font-weight:600;margin-bottom:18px;color:var(--text);}
.footer-col p{color:var(--muted);font-size:14px;line-height:1.8;}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{color:var(--muted);font-size:14px;}
.footer-col ul a:hover{color:var(--primary);}
.contact-item{display:flex;gap:10px;align-items:flex-start;color:var(--muted);font-size:13.5px;line-height:1.7;}
.contact-item i{color:var(--primary);margin-top:5px;font-size:12px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--border);
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--dim);
}
.footer-bottom .links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom .links a{color:var(--dim);}
.footer-bottom .links a:hover{color:var(--primary);}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1040;
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 22px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:#04121B;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  box-shadow:0 12px 34px rgba(24,195,240,.42);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .32s ease,transform .32s ease,filter .22s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{filter:brightness(1.08);color:#04121B;transform:translateY(-2px);}

/* ============ 背景装饰 ============ */
.grid-deco{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(70% 60% at 50% 40%,#000 20%,transparent 86%);
  -webkit-mask-image:radial-gradient(70% 60% at 50% 40%,#000 20%,transparent 86%);
  opacity:.7;
}
section[id]{scroll-margin-top:96px;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .section{padding:88px 0;}
  .nav-links > a{padding:9px 10px;font-size:14px;}
}
@media (max-width:991.98px){
  .container,.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{padding-left:28px;padding-right:28px;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-actions{display:none;}
  .nav-links{
    position:fixed;inset:0;z-index:1050;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:6px;
    padding:96px 28px 32px;
    background:rgba(5,10,20,.96);
    -webkit-backdrop-filter:blur(22px);
    backdrop-filter:blur(22px);
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .28s ease,transform .28s ease;
    margin-left:0;
    overflow-y:auto;
  }
  .nav-links.open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-links > a{
    font-size:16.5px;padding:15px 16px;border-radius:12px;
    border:1px solid transparent;
  }
  .nav-links > a.active::before{left:6px;height:20px;}
  .nav-drawer-cta{display:inline-flex;margin-top:auto;}
  .page-head{padding-top:calc(var(--navh) + 46px);}
  .page-head-grid{grid-template-columns:1fr;gap:34px;}
  .head-thumb{order:-1;}
  .card-wall{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;border-top:none;}
  .flow-item{border-left:none;border-top:1px solid var(--border);padding:26px 0 0 0;}
  .flow-item:first-child{border-top:none;padding-top:0;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat{border-left:none;border-top:1px solid var(--border);}
  .stat:nth-child(1),.stat:nth-child(2){border-top:none;}
  .stat:nth-child(even){border-left:1px solid var(--border);}
  .channels{grid-template-columns:1fr;}
  .cta-panel{grid-template-columns:1fr;padding:34px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .anchorbar{top:60px;}
}
@media (max-width:767.98px){
  .section{padding:72px 0;}
  .section-head{margin-bottom:34px;}
  .page-head h1{font-size:clamp(1.8rem,7vw,2.3rem);}
  .head-meta{gap:16px;}
}
@media (max-width:575.98px){
  .container,.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{padding-left:20px;padding-right:20px;}
  body{font-size:15.5px;}
  .brand-name{font-size:15px;}
  .stats{grid-template-columns:1fr;}
  .stat{border-left:none !important;border-top:1px solid var(--border);}
  .stat:first-child{border-top:none;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-panel{padding:26px 20px;}
  .wall-card{padding:22px;}
  .wall-card .wl-body{padding:22px 20px 24px;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;
    justify-content:center;padding:14px 16px;font-size:14.5px;
  }
  .float-cta.show{transform:translateY(0);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .wall-card:hover,.chan-card:hover,.tl-card:hover{transform:none;}
  .float-cta{transition:none;}
}