/* roulang page: index */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1E;
  --bg-2:#101830;
  --primary:#2AD4FF;
  --primary-deep:#0B7FA8;
  --accent:#7B5CFF;
  --glow:#00F0C8;
  --amber:#FFB454;
  --t1:#EAF2FF;
  --t2:#A8B6D1;
  --t3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(42,212,255,.35);
  --glass:rgba(18,28,52,.55);
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:14px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45),0 0 0 1px var(--line-strong),0 0 24px rgba(42,212,255,.18);
  --sec-y:96px;
  --container:1240px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 620px at 6% -8%,rgba(42,212,255,.13),transparent 62%),
    radial-gradient(780px 540px at 100% 102%,rgba(123,92,255,.12),transparent 60%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.03;
  background-image:
    linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--t1)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,box-shadow .3s ease;
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent) 55%,transparent);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(0,0,0,.4)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:9px;flex-shrink:0;font-size:18px;font-weight:700;color:var(--t1);letter-spacing:.01em}
.logo:hover{color:var(--t1)}
.logo-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px rgba(42,212,255,.85)}
.logo small{display:block;font-size:11px;font-weight:400;color:var(--t3);letter-spacing:.06em;line-height:1}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{position:relative;font-size:15px;color:var(--t2);padding:8px 0;transition:color .2s ease}
.nav-links a:hover{color:var(--t1)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(42,212,255,.6);
}
.nav-cta{
  margin-left:8px;display:inline-flex;align-items:center;justify-content:center;
  min-height:40px;padding:9px 20px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--primary),#25E0C0);
  box-shadow:0 0 0 1px rgba(42,212,255,.5),0 0 18px rgba(42,212,255,.26);
  transition:transform .2s ease,box-shadow .25s ease,filter .25s ease;
}
.nav-cta:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 26px rgba(42,212,255,.45);color:#04121A}
.nav-burger{
  display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);
  background:rgba(16,24,48,.6);border-radius:var(--r-btn);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;padding:0;
}
.nav-burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--t1);transition:transform .28s ease,opacity .2s ease}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{
  display:none;background:var(--bg-1);border-top:1px solid var(--line);
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.nav-drawer.open{max-height:520px}
.nav-drawer a{
  display:block;padding:0 24px;height:52px;line-height:52px;font-size:15px;color:var(--t2);
  border-bottom:1px solid var(--line);
}
.nav-drawer a.active{color:var(--primary)}
.nav-drawer .drawer-cta{margin:16px 24px 20px;text-align:center;line-height:44px;height:44px;color:#04121A;font-weight:700;border-radius:var(--r-btn);background:linear-gradient(135deg,var(--primary),#25E0C0);border-bottom:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,filter .25s ease,border-color .25s ease,color .2s ease;
}
.btn-primary{
  color:#04121A;background:linear-gradient(135deg,var(--primary),#25E0C0);
  box-shadow:0 0 0 1px rgba(42,212,255,.5),0 0 20px rgba(42,212,255,.28);
}
.btn-primary:hover{color:#04121A;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 32px rgba(42,212,255,.45)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.92)}
.btn-ghost{color:var(--t1);background:transparent;border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{border-color:var(--line-strong);box-shadow:inset 0 0 20px rgba(42,212,255,.14);color:var(--t1)}
.btn-ghost:active{transform:translateY(1px)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);border-bottom:2px solid transparent;transition:gap .25s ease,border-color .25s ease}
.link-more:hover{gap:10px;border-bottom-color:rgba(42,212,255,.5);color:var(--t1)}

/* ============ 通用板块 ============ */
.sec{padding:var(--sec-y) 0;position:relative}
.sec-alt{background:var(--bg-1)}
.sec-alt::before,.sec::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(42,212,255,.4),transparent);
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.sec-title{position:relative;padding-left:15px;font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--t1);letter-spacing:-.01em;line-height:1.35}
.sec-title::before{
  content:"";position:absolute;left:0;top:.3em;width:3px;height:22px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(42,212,255,.65);
}
.sec-title::after{content:"";position:absolute;left:0;top:calc(.3em + 28px);width:5px;height:5px;border-radius:50%;background:var(--accent)}
.sec-desc{margin-top:14px;max-width:760px;font-size:15.5px;color:var(--t2)}
.sec-note{font-size:14px;color:var(--t3)}

/* ============ 首屏 ============ */
.hero{position:relative;overflow:hidden;padding:92px 0 84px;display:flex;align-items:center;min-height:580px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.6}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(5,7,15,.95) 0%,rgba(5,7,15,.78) 46%,rgba(5,7,15,.44) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%}
.hero-text{max-width:760px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.06em;
  color:var(--primary);background:rgba(42,212,255,.1);border:1px solid rgba(42,212,255,.28);
  border-radius:999px;padding:6px 14px;margin-bottom:22px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--glow);box-shadow:0 0 10px var(--glow)}
.hero h1{
  font-size:clamp(30px,4.2vw,48px);font-weight:700;color:var(--t1);
  line-height:1.28;letter-spacing:-.01em;
}
.hero-sub{margin-top:20px;font-size:clamp(15.5px,1.5vw,17px);color:var(--t2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:44px;margin-top:48px;padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-stat b{
  display:block;font-size:clamp(28px,3.4vw,40px);font-weight:700;color:var(--t1);
  line-height:1.15;font-variant-numeric:tabular-nums;
}
.hero-stat b em{font-style:normal;color:var(--glow);font-size:.6em;margin-left:4px}
.hero-stat span{display:block;margin-top:6px;font-size:13px;color:var(--t3);letter-spacing:.02em}

/* ============ 功能分组 ============ */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-card.main{
  grid-column:1/-1;display:grid;grid-template-columns:1.05fr .95fr;overflow:hidden;padding:0;
}
.feature-copy{padding:32px;display:flex;flex-direction:column;gap:12px;justify-content:center}
.feature-copy h3{font-size:22px;font-weight:600;color:var(--t1)}
.feature-copy p{font-size:15px;color:var(--t2)}
.feature-media{position:relative;min-height:280px;overflow:hidden;border-radius:0 var(--r-card) var(--r-card) 0}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.feature-card:hover .feature-media img{transform:scale(1.04)}
.feature-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,7,15,.65),transparent 55%)}
.feature-card{padding:26px;display:flex;flex-direction:column;gap:12px}
.ficon{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(42,212,255,.1);border:1px solid rgba(42,212,255,.28);color:var(--primary);
}
.feature-card h3{font-size:20px;font-weight:600;color:var(--t1)}
.feature-card p{font-size:15px;color:var(--t2)}

/* ============ 使用流程 ============ */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:12px}
.timeline::before{
  content:"";position:absolute;top:19px;left:6%;right:6%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(42,212,255,.5),rgba(123,92,255,.5),transparent);
}
.tl-step{position:relative;padding-top:56px}
.tl-dot{
  position:absolute;top:0;left:0;width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:var(--primary);
  background:var(--bg-0);border:1px solid var(--line-strong);
  box-shadow:0 0 18px rgba(42,212,255,.22);font-variant-numeric:tabular-nums;
}
.tl-step h3{font-size:18px;font-weight:600;color:var(--t1);margin-bottom:8px}
.tl-step p{font-size:14.5px;color:var(--t2)}

/* ============ 案例交错 ============ */
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-bottom:56px}
.case-row:last-child{margin-bottom:0}
.case-row.reverse .case-media{order:2}
.case-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s ease}
.case-row:hover .case-media img{transform:scale(1.04)}
.case-body h3{font-size:22px;font-weight:600;color:var(--t1);margin-bottom:12px}
.case-body p{font-size:15px;color:var(--t2)}
.case-tags{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}
.tag{
  font-size:12.5px;padding:4px 11px;border-radius:999px;border:1px solid var(--line);
  color:var(--t2);background:rgba(255,255,255,.03);
}
.tag.violet{color:#C9BCFF;border-color:rgba(123,92,255,.4);background:rgba(123,92,255,.12)}
.tag.cyan{color:var(--primary);border-color:rgba(42,212,255,.32);background:rgba(42,212,255,.1)}
.case-result{
  margin-top:16px;padding:14px 18px;border-radius:var(--r-img);
  background:rgba(0,240,200,.06);border:1px solid rgba(0,240,200,.22);
  font-size:14.5px;color:var(--t2);
}
.case-result b{color:var(--glow);font-size:20px;font-weight:700;margin-right:8px;font-variant-numeric:tabular-nums}

/* ============ 状态条 ============ */
.status-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.status-item{
  display:flex;align-items:center;gap:12px;padding:18px 20px;border-radius:var(--r-img);
  background:var(--glass);border:1px solid var(--line);
}
.status-item i{width:9px;height:9px;border-radius:50%;background:var(--glow);box-shadow:0 0 10px var(--glow);animation:pulse 2.4s ease-in-out infinite;flex-shrink:0}
@keyframes pulse{0%,100%{opacity:.45;transform:scale(.85)}50%{opacity:1;transform:scale(1)}}
.status-item b{display:block;font-size:14.5px;color:var(--t1);font-weight:600}
.status-item span{display:block;font-size:12.5px;color:var(--t3)}

/* ============ 价格 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.price-card{padding:28px;display:flex;flex-direction:column;gap:20px;position:relative}
.price-card.featured{
  transform:translateY(-8px);
  border-color:rgba(42,212,255,.42);
  box-shadow:0 16px 44px rgba(0,0,0,.5),0 0 0 1px rgba(42,212,255,.3);
}
.price-badge{
  position:absolute;top:-12px;right:22px;font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:4px 12px;border-radius:999px;color:#241503;background:var(--amber);
}
.price-name{font-size:17px;font-weight:600;color:var(--t1)}
.price-num{display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums}
.price-num b{font-size:40px;font-weight:700;color:var(--amber);line-height:1}
.price-num span{font-size:13.5px;color:var(--t3)}
.price-desc{font-size:14px;color:var(--t3);margin-top:-10px}
.price-list{display:flex;flex-direction:column;gap:11px}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:var(--t2);line-height:1.65}
.price-list li::before{content:"✓";color:var(--glow);font-weight:700;flex-shrink:0}
.price-card .btn{width:100%}

/* ============ 资讯列表 ============ */
.ky-news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ky-news-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-card);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.ky-news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.ky-news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);border-bottom:1px solid var(--line)}
.ky-news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.ky-news-card:hover .ky-news-thumb img{transform:scale(1.04)}
.ky-news-body{padding:16px;display:flex;flex-direction:column;gap:10px}
.ky-news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
.ky-badge{
  font-size:12px;padding:3px 10px;border-radius:999px;color:var(--primary);
  background:rgba(42,212,255,.1);border:1px solid rgba(42,212,255,.25);white-space:nowrap;
}
.ky-news-date{font-size:12.5px;color:var(--t3);white-space:nowrap}
.ky-news-title{
  font-size:17px;font-weight:600;color:var(--t1);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ky-news-sum{
  font-size:14px;color:var(--t2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  grid-column:1/-1;text-align:center;padding:48px 24px;
  border:1px dashed var(--line);border-radius:var(--r-card);background:rgba(16,24,48,.4);
}
.empty-state svg{width:36px;height:36px;color:var(--t3);margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--t2)}
.empty-state span{display:block;margin-top:6px;font-size:13px;color:var(--t3)}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 44px 20px 0;
  font-size:16px;font-weight:600;color:var(--t1);position:relative;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--primary);transition:transform .26s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item[open] summary{color:var(--primary)}
.faq-item::before{
  content:"";position:absolute;left:-14px;top:22px;width:3px;height:0;
  background:var(--primary);border-radius:2px;transition:height .26s ease;
}
.faq-item[open]::before{height:20px}
.faq-body{padding:0 44px 22px 0;font-size:15px;color:var(--t2);animation:fadeIn .26s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ============ CTA + 表单 ============ */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  padding:52px;background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 320px at 82% 12%,rgba(42,212,255,.18),transparent 62%),
             radial-gradient(420px 260px at 8% 100%,rgba(123,92,255,.16),transparent 60%);
}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.cta-copy h2{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--t1);line-height:1.35}
.cta-copy p{margin-top:16px;font-size:15.5px;color:var(--t2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:13.5px;color:var(--t3)}
.form-field input,.form-field textarea{
  width:100%;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-input);
  padding:12px 14px;font-size:15px;color:var(--t1);min-height:46px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field textarea{min-height:104px;resize:vertical;line-height:1.7}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--t3)}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(42,212,255,.15);
}
.form-msg{grid-column:1/-1;font-size:13px;min-height:18px}
.form-msg.ok{color:var(--glow)}
.form-msg.err{color:#FF7A85}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);position:relative;padding:64px 0 0;border-top:1px solid var(--line)}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(42,212,255,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--t3);max-width:300px}
.footer-col h4{font-size:14.5px;font-weight:600;color:var(--t1);margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:var(--t3);padding:6px 0;transition:color .2s ease}
.footer-col a:hover{color:var(--primary)}
.footer-col p{font-size:14px;color:var(--t3);padding:4px 0}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--t3);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec-y:68px}
  .nav-links,.nav-cta{display:none}
  .nav-burger{display:inline-flex}
  .nav-drawer{display:block}
  .feature-card.main{grid-template-columns:1fr}
  .feature-media{border-radius:0 0 var(--r-card) var(--r-card);min-height:220px}
  .timeline{grid-template-columns:repeat(2,1fr);row-gap:36px}
  .timeline::before{display:none}
  .ky-news-list{grid-template-columns:repeat(2,1fr)}
  .status-strip{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sec-y:48px}
  .container{padding:0 16px}
  .nav-wrap{height:60px}
  .hero{padding:64px 0 56px;min-height:auto}
  .hero-bg{height:340px;bottom:auto;opacity:.55}
  .hero-mask{background:linear-gradient(180deg,rgba(5,7,15,.6) 0%,rgba(5,7,15,.92) 42%,var(--bg-0) 100%)}
  .hero h1{font-size:28px}
  .hero-stats{gap:28px}
  .hero-actions .btn{flex:1 1 100%}
  .sec-head{flex-direction:column;align-items:flex-start}
  .feature-grid{grid-template-columns:1fr}
  .case-row,.case-row.reverse{grid-template-columns:1fr;gap:24px}
  .case-row.reverse .case-media{order:0}
  .price-grid{grid-template-columns:1fr}
  .price-card.featured{transform:none}
  .ky-news-list{grid-template-columns:1fr}
  .status-strip{grid-template-columns:1fr}
  .cta-panel{padding:28px 20px}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:480px){
  .timeline{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-stat b{font-size:28px}
}

/* roulang page: article */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1E;
  --bg-2:#101830;
  --primary:#2AD4FF;
  --primary-deep:#0B7FA8;
  --accent:#7B5CFF;
  --glow:#00F0C8;
  --amber:#FFB454;
  --t1:#EAF2FF;
  --t2:#A8B6D1;
  --t3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(42,212,255,.35);
  --glass:rgba(18,28,52,.55);
  --glass-solid:rgba(16,24,48,.86);
  --radius-card:16px;
  --radius-input:12px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35), inset 0 0 0 1px rgba(255,255,255,.06);
  --shadow-card-hover:0 16px 40px rgba(0,0,0,.45), 0 0 0 1px var(--line-strong), 0 0 24px rgba(42,212,255,.18);
  --container:1240px;
  --read:780px;
  --section:96px;
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--t2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(920px 520px at 8% -6%, rgba(42,212,255,.10), transparent 62%),
    radial-gradient(880px 520px at 100% 106%, rgba(123,92,255,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:auto,auto,72px 72px,72px 72px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .22s ease;}
a:hover{color:#7FE3FF;}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.35;letter-spacing:-.01em;}
p{margin:0 0 .95em;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(42,212,255,.28);color:#fff;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--section) 0;}
.section-sm{padding:64px 0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);}
.eyebrow::before{content:'';width:14px;height:2px;background:var(--primary);border-radius:2px;box-shadow:0 0 10px rgba(42,212,255,.7);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;}
.section-head h2{font-size:clamp(24px,3vw,34px);position:relative;padding-left:16px;}
.section-head h2::before{content:'';position:absolute;left:0;top:.3em;width:3px;height:22px;border-radius:2px;background:linear-gradient(180deg,var(--primary),var(--primary-deep));box-shadow:0 0 12px rgba(42,212,255,.5);}
.section-head p{margin:8px 0 0;color:var(--t3);font-size:14px;}
.divider{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(42,212,255,.45),transparent);}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease, box-shadow .25s ease, background .25s ease;
}
.site-header::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent) 58%,transparent);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(0,0,0,.4);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--t1);letter-spacing:-.01em;}
.logo:hover{color:var(--t1);}
.logo-dot{width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px rgba(42,212,255,.85);flex:0 0 auto;}
.logo small{display:block;font-size:11.5px;font-weight:400;color:var(--t3);letter-spacing:.02em;line-height:1.4;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links > a{position:relative;font-size:15px;color:var(--t2);padding:6px 0;white-space:nowrap;}
.nav-links > a:hover{color:var(--t1);}
.nav-links > a.active{color:var(--primary);}
.nav-links > a.active::after{
  content:'';position:absolute;left:0;right:0;bottom:-16px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(42,212,255,.6);
}
.nav-links .nav-cta{
  padding:10px 20px;
  border-radius:var(--radius-btn);
  font-size:14.5px;
  font-weight:600;
  color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--glow));
  box-shadow:0 0 0 1px rgba(42,212,255,.5), 0 0 20px rgba(42,212,255,.28);
  transition:box-shadow .25s ease, transform .18s ease, filter .18s ease;
}
.nav-links .nav-cta:hover{color:#04121A;box-shadow:0 0 0 1px rgba(42,212,255,.7), 0 0 32px rgba(42,212,255,.45);transform:translateY(-1px);filter:brightness(1.06);}
.nav-links .nav-cta:active{transform:translateY(1px);filter:brightness(.92);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:rgba(16,24,48,.6);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s ease, opacity .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;
  padding:13px 26px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  line-height:1;
  transition:box-shadow .25s ease, transform .18s ease, border-color .25s ease, filter .18s ease, background .25s ease;
}
.btn-primary{
  color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--glow));
  box-shadow:0 0 0 1px rgba(42,212,255,.5), 0 0 20px rgba(42,212,255,.28);
}
.btn-primary:hover{color:#04121A;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(42,212,255,.72), 0 0 32px rgba(42,212,255,.45);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(1px);filter:brightness(.92);}
.btn-ghost{
  color:var(--t1);
  background:transparent;
  border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{color:var(--t1);border-color:var(--line-strong);box-shadow:inset 0 0 20px rgba(42,212,255,.14);}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--primary);}
.link-arrow svg{transition:transform .22s ease;}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:44px 0 40px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg, rgba(5,7,15,.86), rgba(5,7,15,.96)), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.article-hero::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(42,212,255,.45),transparent);
}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);flex-wrap:wrap;margin-bottom:18px;}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:rgba(107,122,153,.6);}
.breadcrumb .current{max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--t2);}
.article-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  max-width:900px;
  margin-bottom:18px;
}
.article-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--t3);}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:999px;
  font-size:12.5px;
  line-height:1.5;
  background:rgba(42,212,255,.10);
  color:var(--primary);
  border:1px solid rgba(42,212,255,.24);
}
.badge-purple{background:rgba(123,92,255,.12);color:#B9A7FF;border-color:rgba(123,92,255,.28);}
.badge-amber{background:rgba(255,180,84,.12);color:var(--amber);border-color:rgba(255,180,84,.28);}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--t3);display:inline-block;}

/* ============ 文章主体布局 ============ */
.article-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr) 240px;
  gap:56px;
  align-items:start;
  padding:56px 0 80px;
}
.article-main{max-width:var(--read);}
.article-body{
  font-size:16px;
  line-height:1.9;
  color:var(--t2);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1em;}
.article-body h2{
  position:relative;
  font-size:clamp(22px,2.4vw,28px);
  margin:1.9em 0 .7em;
  padding-left:16px;
}
.article-body h2::before{
  content:'';position:absolute;left:0;top:.34em;width:3px;height:22px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 12px rgba(42,212,255,.45);
}
.article-body h3{font-size:20px;margin:1.4em 0 .6em;color:var(--t1);}
.article-body h4{font-size:17px;margin:1.3em 0 .5em;color:var(--t1);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.3em;}
.article-body li{margin-bottom:.5em;line-height:1.9;}
.article-body li::marker{color:var(--primary);}
.article-body strong{color:var(--t1);font-weight:600;}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:#7FE3FF;}
.article-body img{
  width:100%;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  margin:1.5em 0 .6em;
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{text-align:center;font-size:12.5px;color:var(--t3);margin-top:.6em;}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  border-left:3px solid var(--primary);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:14.5px;
  border:1px solid var(--line);
  border-radius:var(--radius-input);
}
.article-body thead{background:var(--bg-2);}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap;}
.article-body th{color:var(--t1);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
.article-body hr{border:0;height:1px;margin:2.2em 0;background:linear-gradient(90deg,transparent,rgba(42,212,255,.4),transparent);}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13.5px;
  padding:2px 6px;
  border-radius:6px;
  background:var(--bg-2);
  color:var(--primary);
  border:1px solid var(--line);
}

/* 目录 */
.article-aside{position:sticky;top:96px;}
.toc{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:20px 18px;
  box-shadow:var(--shadow-card);
}
.toc h3{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--t3);margin-bottom:14px;font-weight:600;}
.toc ol{list-style:none;padding:0;margin:0;counter-reset:toc;}
.toc li{margin-bottom:2px;}
.toc a{
  display:block;
  position:relative;
  padding:7px 10px 7px 12px;
  font-size:13.5px;
  line-height:1.6;
  color:var(--t3);
  border-radius:8px;
  transition:color .2s ease, background .2s ease;
}
.toc a::before{
  content:'';position:absolute;left:0;top:9px;bottom:9px;width:2px;border-radius:2px;
  background:transparent;transition:background .2s ease, box-shadow .2s ease;
}
.toc a:hover{color:var(--t1);background:rgba(255,255,255,.03);}
.toc a.active{color:var(--primary);background:rgba(42,212,255,.08);}
.toc a.active::before{background:var(--primary);box-shadow:0 0 10px rgba(42,212,255,.6);}

/* 标签行 */
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:36px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:13px;color:var(--t3);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;
  font-size:12.5px;
  border-radius:999px;
  color:var(--t2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  transition:color .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.tag:hover{color:var(--primary);border-color:var(--line-strong);box-shadow:0 0 18px rgba(42,212,255,.16);}
.tag.accent{color:#B9A7FF;border-color:rgba(123,92,255,.3);}

/* 返回入口 */
.back-links{display:flex;gap:26px;flex-wrap:wrap;margin-top:28px;}
.back-links a{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--t2);}
.back-links a:hover{color:var(--primary);}
.back-links svg{flex:0 0 auto;}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;
  padding:64px 24px;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:rgba(16,24,48,.4);
}
.empty-state svg{color:var(--t3);margin-bottom:16px;}
.empty-state .empty-title{font-size:15px;color:var(--t2);margin-bottom:6px;}
.empty-state .empty-sub{font-size:13px;color:var(--t3);margin-bottom:18px;}

/* 相关推荐 */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  display:flex;flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card-hover);}
.related-thumb{aspect-ratio:16/9;background:var(--bg-2);border-bottom:1px solid var(--line);overflow:hidden;}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease;}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-body .row{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--t3);}
.related-body h3{font-size:16.5px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-body p{font-size:13.5px;color:var(--t2);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* CTA 面板 */
.cta-panel{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  padding:52px 44px;
  text-align:center;
}
.cta-panel::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(520px 260px at 50% 0%, rgba(42,212,255,.16), transparent 70%);
  pointer-events:none;
}
.cta-panel h2{position:relative;font-size:clamp(22px,2.8vw,32px);margin-bottom:14px;}
.cta-panel p{position:relative;max-width:640px;margin:0 auto 26px;color:var(--t2);font-size:15px;}
.cta-actions{position:relative;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.cta-note{position:relative;margin-top:16px;font-size:13px;color:var(--t3);}

/* 状态条 */
.status-bar{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding:14px 20px;
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  background:rgba(16,24,48,.5);
  font-size:13px;
  color:var(--t3);
  margin-bottom:36px;
}
.status-bar .pulse{
  width:8px;height:8px;border-radius:50%;background:var(--glow);
  box-shadow:0 0 0 0 rgba(0,240,200,.6);
  animation:pulse 2.2s infinite;
  flex:0 0 auto;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(0,240,200,.55);}
  70%{box-shadow:0 0 0 12px rgba(0,240,200,0);}
  100%{box-shadow:0 0 0 0 rgba(0,240,200,0);}
}
.status-bar strong{color:var(--t1);font-weight:600;}
.status-bar .sep{color:rgba(107,122,153,.5);}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:64px 0 26px;
  margin-top:20px;
}
.site-footer::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(42,212,255,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;color:var(--t3);line-height:1.85;max-width:34ch;}
.footer-col h4{font-size:14px;color:var(--t1);margin-bottom:16px;font-weight:600;}
.footer-col a,.footer-col p{display:block;font-size:13.5px;color:var(--t3);margin:0 0 10px;line-height:1.7;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--t3);
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .article-shell{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-aside{display:none;}
  .article-main{max-width:var(--read);margin:0 auto;}
}
@media (max-width:1024px){
  :root{--section:68px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:absolute;
    top:100%;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 20px 20px;
    background:var(--bg-1);
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(0,0,0,.5);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links > a{
    padding:0 4px;
    min-height:52px;
    display:flex;
    align-items:center;
    border-bottom:1px solid var(--line);
    font-size:15px;
  }
  .nav-links > a.active::after{display:none;}
  .nav-links > a.active{border-left:3px solid var(--primary);padding-left:12px;}
  .nav-links .nav-cta{margin-top:16px;justify-content:center;border-bottom:0;min-height:46px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:768px){
  :root{--section:48px;}
  .container{padding:0 16px;}
  .nav-inner{height:60px;}
  .logo{font-size:16.5px;}
  .logo small{display:none;}
  .article-hero{padding:28px 0 30px;}
  .article-shell{padding:36px 0 56px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body table{font-size:13.5px;}
  .article-body th,.article-body td{padding:10px 12px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .cta-panel{padding:36px 22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .breadcrumb .current{max-width:32ch;}
}
@media (max-width:480px){
  .article-hero h1{font-size:27px;}
  .article-body h2{font-size:22px;}
  .status-bar{font-size:12.5px;padding:12px 14px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1E;
  --bg-2:#101830;
  --primary:#2AD4FF;
  --primary-deep:#0B7FA8;
  --accent:#7B5CFF;
  --glow:#00F0C8;
  --amber:#FFB454;
  --t1:#EAF2FF;
  --t2:#A8B6D1;
  --t3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(42,212,255,.35);
  --glass:rgba(18,28,52,.55);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35), inset 0 0 0 1px rgba(255,255,255,.06);
  --shadow-card-hover:0 16px 40px rgba(0,0,0,.45), 0 0 0 1px var(--line-strong), 0 0 24px rgba(42,212,255,.18);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:150px;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(620px 420px at 6% 2%, rgba(42,212,255,.10), transparent 70%),
    radial-gradient(720px 520px at 94% 90%, rgba(123,92,255,.10), transparent 70%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.03;
  background-image:
    linear-gradient(rgba(255,255,255,.7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.7) 1px, transparent 1px);
  background-size:68px 68px;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;}
button{font:inherit;}
h1,h2,h3,h4{color:var(--t1);margin:0;line-height:1.35;}
p{margin:0 0 .9em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.site-header,.cat-hero,.anchor-bar,main,.site-footer{position:relative;z-index:1;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent) 46%,transparent);
}
.site-header.scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(0,0,0,.4);
}
.header-inner{
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  color:var(--t1);font-size:18px;font-weight:700;letter-spacing:-.01em;
  text-decoration:none;white-space:nowrap;
}
.logo-dot{
  width:9px;height:9px;border-radius:50%;flex:none;
  background:var(--primary);box-shadow:0 0 12px rgba(42,212,255,.85);
}
.logo-text small{
  display:block;font-size:11px;font-weight:400;color:var(--t3);
  letter-spacing:.04em;margin-top:1px;
}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;
  color:var(--t2);font-size:15px;text-decoration:none;
  padding:6px 0;transition:color .2s ease;
}
.nav-links a:hover{color:var(--t1);}
.nav-links a.active{color:var(--primary);}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(42,212,255,.6);
}
.nav-links a.nav-cta{
  background:linear-gradient(135deg,var(--primary),var(--glow));
  color:#03141C;font-weight:600;padding:11px 22px;border-radius:var(--r-btn);
  box-shadow:0 0 0 1px rgba(42,212,255,.5),0 0 20px rgba(42,212,255,.28);
  transition:box-shadow .25s ease,transform .2s ease,filter .2s ease;
}
.nav-links a.nav-cta:hover{
  box-shadow:0 0 0 1px rgba(42,212,255,.6),0 0 32px rgba(42,212,255,.45);
  transform:translateY(-1px);filter:brightness(1.06);color:#03141C;
}
.nav-links a.nav-cta.active::after{display:none;}
.nav-toggle{
  display:none;width:44px;height:44px;flex:none;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);
  cursor:pointer;transition:border-color .2s ease;
}
.nav-toggle:hover{border-color:var(--line-strong);}
.nav-toggle span{
  display:block;width:18px;height:1.6px;background:var(--t1);border-radius:2px;
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;height:260px;overflow:hidden;
  display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(5,7,15,.94) 0%,rgba(5,7,15,.72) 52%,rgba(5,7,15,.88) 100%);
}
.cat-hero::before{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;z-index:2;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);
}
.hero-inner{position:relative;z-index:2;padding-bottom:34px;}
.crumb{font-size:13px;color:var(--t3);margin-bottom:10px;}
.crumb span{margin:0 8px;color:var(--t3);opacity:.6;}
.cat-hero h1{
  font-size:clamp(30px,4.2vw,48px);font-weight:700;letter-spacing:-.01em;
  margin-bottom:10px;
}
.cat-hero .hero-sub{
  max-width:660px;margin:0;font-size:15px;color:var(--t2);
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:68px;z-index:60;
  background:rgba(10,15,30,.9);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.anchor-bar .container{
  display:flex;gap:10px;align-items:center;
  padding-top:12px;padding-bottom:12px;
  overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.anchor-bar .container::-webkit-scrollbar{display:none;}
.anchor-bar a{
  flex:none;font-size:13.5px;color:var(--t2);
  border:1px solid var(--line);border-radius:999px;
  padding:7px 16px;text-decoration:none;white-space:nowrap;
  transition:color .2s ease,border-color .2s ease,box-shadow .25s ease,background .2s ease;
}
.anchor-bar a:hover{
  color:var(--primary);border-color:var(--line-strong);
  box-shadow:0 0 18px rgba(42,212,255,.2);
}
.anchor-bar a.active{
  color:#03141C;background:linear-gradient(135deg,var(--primary),var(--glow));
  border-color:transparent;font-weight:600;
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;}
.section.alt{background:var(--bg-1);}
.section.alt::before{
  content:"";display:block;height:1px;margin:-96px 0 96px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);
  opacity:.5;
}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:28px;
}
.sec-title{position:relative;padding-left:18px;}
.sec-title::before{
  content:"";position:absolute;left:0;top:7px;width:3px;height:22px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(42,212,255,.7);
}
.sec-title::after{
  content:"";position:absolute;left:-2px;top:2px;width:7px;height:7px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 10px rgba(123,92,255,.8);
}
.sec-title h2{font-size:clamp(24px,3vw,34px);font-weight:700;}
.sec-desc{max-width:560px;font-size:14.5px;color:var(--t3);margin:8px 0 0;}

/* ---------- 介绍 ---------- */
.intro-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start;
}
.intro-copy p{color:var(--t2);margin-bottom:1em;}
.intro-copy p:last-child{margin-bottom:0;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  font-size:12.5px;border-radius:999px;padding:6px 14px;
  border:1px solid var(--line);color:var(--t2);background:rgba(18,28,52,.45);
}
.tag.blue{color:var(--primary);border-color:rgba(42,212,255,.3);background:rgba(42,212,255,.08);}
.tag.purple{color:#B9A6FF;border-color:rgba(123,92,255,.35);background:rgba(123,92,255,.12);}
.intro-aside{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.intro-aside h3{font-size:18px;margin-bottom:16px;}
.check-list li{
  position:relative;padding-left:26px;color:var(--t2);font-size:14.5px;
  line-height:1.75;margin-bottom:14px;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:7px;
  border-left:2px solid var(--glow);border-bottom:2px solid var(--glow);
  transform:rotate(-45deg);border-radius:1px;
}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.f-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .32s ease,box-shadow .32s ease,border-color .32s ease;
}
.f-card:hover{
  transform:translateY(-4px);border-color:var(--line-strong);
  box-shadow:var(--shadow-card-hover);
}
.f-card .thumb{
  aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);
  border-bottom:1px solid var(--line);
}
.f-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .32s ease;
}
.f-card:hover .thumb img{transform:scale(1.04);}
.f-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.f-card h3{font-size:19px;font-weight:600;}
.f-card p{margin:0;font-size:14.5px;color:var(--t2);}
.badge{
  display:inline-flex;align-items:center;
  font-size:12.5px;line-height:1;border-radius:999px;padding:6px 12px;
  color:var(--primary);background:rgba(42,212,255,.1);border:1px solid rgba(42,212,255,.25);
  align-self:flex-start;
}
.badge.purple{
  color:#B9A6FF;background:rgba(123,92,255,.12);border-color:rgba(123,92,255,.32);
}

/* ---------- 对比表格 ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);
  background:rgba(16,24,48,.6);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);-webkit-overflow-scrolling:touch;
}
table.cmp{width:100%;min-width:760px;border-collapse:collapse;font-size:14.5px;}
table.cmp caption{
  caption-side:top;text-align:left;padding:20px 24px 4px;
  color:var(--t3);font-size:13px;
}
table.cmp th{
  text-align:left;padding:16px 22px;font-weight:600;color:var(--t1);
  background:rgba(42,212,255,.08);
  border-bottom:1px solid var(--line);white-space:nowrap;
}
table.cmp td{
  padding:16px 22px;color:var(--t2);border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.cmp tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
table.cmp tbody tr:hover{background:rgba(42,212,255,.06);}
table.cmp tbody tr:last-child td{border-bottom:0;}
table.cmp td:first-child{color:var(--t1);font-weight:600;}
.dot-ok{color:var(--glow);font-weight:600;}
.dot-part{color:var(--amber);font-weight:600;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;}
.faq details{border-bottom:1px solid var(--line);}
.faq details:first-child{border-top:1px solid var(--line);}
.faq summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 46px 20px 18px;
  font-size:16px;font-weight:600;color:var(--t1);
  transition:color .2s ease;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--primary);}
.faq summary::after{
  content:"+";position:absolute;right:16px;top:50%;
  transform:translateY(-50%);color:var(--primary);font-size:20px;line-height:1;
  transition:transform .26s ease;
}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq details[open] summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(42,212,255,.6);
}
.faq .ans{padding:0 46px 22px 18px;color:var(--t2);font-size:15px;}
.faq .ans p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;text-align:center;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(125deg,rgba(16,24,48,.92),rgba(10,15,30,.86));
  padding:60px 32px;
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:340px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(42,212,255,.18),transparent 72%);
}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:340px;height:340px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(123,92,255,.16),transparent 72%);
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-band p{max-width:620px;margin:0 auto 26px;color:var(--t2);font-size:15px;}
.btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  border:0;transition:transform .2s ease,box-shadow .25s ease,filter .2s ease,border-color .25s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--glow));color:#03141C;
  box-shadow:0 0 0 1px rgba(42,212,255,.5),0 0 20px rgba(42,212,255,.28);
}
.btn-primary:hover{
  box-shadow:0 0 0 1px rgba(42,212,255,.6),0 0 32px rgba(42,212,255,.45);
  transform:translateY(-1px);filter:brightness(1.06);
}
.btn-primary:active{transform:translateY(1px);filter:brightness(.92);}
.btn-ghost{
  background:transparent;color:var(--t1);border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{
  border-color:var(--line-strong);
  box-shadow:inset 0 0 22px rgba(42,212,255,.12);
  transform:translateY(-1px);
}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none;}

/* ---------- 相关分类 ---------- */
.related{padding:64px 0 96px;}
.cat-links{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px;}
.cat-links a{
  display:inline-flex;align-items:center;min-height:44px;
  border:1px solid var(--line);border-radius:999px;
  padding:11px 22px;font-size:14.5px;color:var(--t2);text-decoration:none;
  transition:color .22s ease,border-color .22s ease,box-shadow .25s ease,background .22s ease;
}
.cat-links a:hover{
  color:var(--primary);border-color:var(--line-strong);
  box-shadow:0 0 20px rgba(42,212,255,.22);background:rgba(42,212,255,.06);
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--bg-1);
  padding:64px 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{font-size:17px;margin-bottom:4px;}
.footer-brand p{color:var(--t2);font-size:14px;line-height:1.8;margin:14px 0 0;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col a{
  display:block;color:var(--t2);font-size:14px;text-decoration:none;
  margin-bottom:10px;transition:color .2s ease;
}
.footer-col a:hover{color:var(--primary);}
.footer-col p{color:var(--t2);font-size:14px;line-height:1.8;margin:0 0 8px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:13px;color:var(--t3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 20px;}
}
@media (max-width:1024px){
  .section{padding:68px 0;}
  .section.alt::before{margin:-68px 0 68px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;top:68px;left:0;right:0;
    max-height:calc(100vh - 68px);overflow-y:auto;
    flex-direction:column;align-items:stretch;gap:0;
    padding:8px 0 18px;
    background:var(--bg-1);border-top:1px solid var(--line);
    box-shadow:0 20px 40px rgba(0,0,0,.5);
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .25s ease,transform .25s ease;
  }
  .nav-links.open{opacity:1;transform:none;pointer-events:auto;}
  .nav-links a{
    height:52px;padding:0 24px;font-size:15px;
    border-bottom:1px solid var(--line);justify-content:flex-start;
  }
  .nav-links a.active::after{display:none;}
  .nav-links a.active{background:rgba(42,212,255,.07);}
  .nav-links a.nav-cta{
    margin:14px 24px 0;height:48px;justify-content:center;border-bottom:0;
  }
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section.alt::before{margin:-48px 0 48px;}
  .sec-head{margin-bottom:22px;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:26px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .cat-hero{height:230px;}
  .hero-inner{padding-bottom:26px;}
  .anchor-bar{top:60px;}
  .header-inner{height:60px;}
  .nav-links{top:60px;max-height:calc(100vh - 60px);}
  .site-header .logo-text small{display:none;}
  .cta-band{padding:44px 22px;}
  .related{padding:48px 0 68px;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:28px;}
  .cat-hero .hero-sub{font-size:14px;}
  .footer-grid{grid-template-columns:1fr;}
  .intro-aside{padding:20px;}
  .f-card .body{padding:18px;}
  .btn{width:100%;}
  .btn-row{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1E;
  --bg-2:#101830;
  --primary:#2AD4FF;
  --primary-deep:#0B7FA8;
  --accent:#7B5CFF;
  --glow:#00F0C8;
  --amber:#FFB454;
  --t1:#EAF2FF;
  --t2:#A8B6D1;
  --t3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(42,212,255,.35);
  --glass:rgba(18,28,52,.55);
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:14px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35), inset 0 0 0 1px rgba(255,255,255,.06);
  --shadow-card-hover:0 16px 40px rgba(0,0,0,.45), 0 0 0 1px var(--line-strong), 0 0 24px rgba(42,212,255,.18);
  --section-gap:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 8% 4%, rgba(42,212,255,.10), transparent 68%),
    radial-gradient(760px 480px at 96% 92%, rgba(123,92,255,.10), transparent 70%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  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:64px 64px;
  opacity:.03;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 .95em;}
p:last-child{margin-bottom:0;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--t1);line-height:1.32;font-weight:700;}
h1{font-size:clamp(30px,4.2vw,48px);letter-spacing:-.01em;}
h2{font-size:clamp(24px,3vw,34px);}
h3{font-size:20px;font-weight:600;}
::selection{background:rgba(42,212,255,.28);color:#fff;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
.section{padding:var(--section-gap) 0;}
.section-alt{background:var(--bg-1);}
.section + .section{border-top:1px solid transparent;}
.divider-glow{
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(42,212,255,.55),rgba(123,92,255,.35),transparent);
  border:0;
  margin:0;
}
.section-head{
  max-width:780px;
  margin-bottom:28px;
}
.section-head h2{position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:3px;
  height:22px;
  border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(42,212,255,.6);
}
.section-head h2::after{
  content:"";
  position:absolute;
  left:-4px;
  top:6px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
}
.section-head p{margin-top:14px;color:var(--t2);max-width:720px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.site-header::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent),transparent);
}
.site-header.scrolled{
  border-bottom:1px solid var(--line);
  box-shadow:0 6px 20px rgba(0,0,0,.4);
}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:var(--t1);
  letter-spacing:.01em;
  white-space:nowrap;
}
.logo small{
  display:block;
  font-size:11.5px;
  font-weight:400;
  color:var(--t3);
  letter-spacing:.08em;
  line-height:1.4;
  margin-top:1px;
}
.logo-dot{
  width:10px;height:10px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 14px rgba(42,212,255,.9);
  flex:0 0 auto;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
}
.nav-links > a{
  font-size:15px;
  color:var(--t2);
  position:relative;
  padding:6px 0;
  transition:color .22s ease;
  white-space:nowrap;
}
.nav-links > a:hover{color:var(--t1);}
.nav-links > a.active{color:var(--primary);}
.nav-links > a.active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(42,212,255,.6);
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  padding:10px 20px;
  border-radius:var(--r-btn);
  background:linear-gradient(120deg,var(--primary),#25f0cf);
  color:#04121A !important;
  font-weight:700;
  font-size:14.5px;
  box-shadow:0 0 0 1px rgba(42,212,255,.5), 0 0 20px rgba(42,212,255,.28);
  transition:box-shadow .24s ease, transform .2s ease;
}
.nav-cta:hover{
  box-shadow:0 0 32px rgba(42,212,255,.45);
  transform:translateY(-1px);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:rgba(16,24,48,.6);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--t1);
  transition:transform .26s ease, opacity .2s ease;
}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:0;
  transition:box-shadow .24s ease, transform .2s ease, background .24s ease, border-color .24s ease, filter .2s ease;
  min-height:44px;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),#25f0cf);
  color:#04121A;
  box-shadow:0 0 0 1px rgba(42,212,255,.5), 0 0 20px rgba(42,212,255,.28);
}
.btn-primary:hover{box-shadow:0 0 32px rgba(42,212,255,.45);transform:translateY(-1px);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(1px);filter:brightness(.92);}
.btn-ghost{
  background:transparent;
  color:var(--t1);
  border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:var(--line-strong);box-shadow:inset 0 0 18px rgba(42,212,255,.16);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn[disabled]{opacity:.45;cursor:not-allowed;}

/* ===== 首屏 ===== */
.page-hero{
  position:relative;
  margin-top:68px;
  padding:76px 0 64px;
  background-image:
    linear-gradient(100deg, rgba(5,7,15,.94) 8%, rgba(5,7,15,.72) 48%, rgba(5,7,15,.86) 100%),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--primary);
  background:rgba(42,212,255,.08);
  border:1px solid rgba(42,212,255,.28);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:20px;
}
.eyebrow i{
  width:6px;height:6px;border-radius:50%;
  background:var(--glow);
  box-shadow:0 0 10px var(--glow);
  display:inline-block;
}
.page-hero h1{margin-bottom:18px;}
.hero-sub{
  font-size:17px;
  color:var(--t2);
  max-width:600px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-points{display:grid;gap:10px;}
.hero-points li{
  position:relative;
  padding-left:24px;
  font-size:14.5px;
  color:var(--t2);
}
.hero-points li::before{
  content:"";
  position:absolute;
  left:2px;top:11px;
  width:9px;height:9px;
  border-radius:2px;
  transform:rotate(45deg);
  background:linear-gradient(120deg,var(--primary),var(--accent));
  box-shadow:0 0 10px rgba(42,212,255,.5);
}
.device-card{
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-card);
}
.device-card-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:14px;
  color:var(--t1);
  font-weight:600;
  margin-bottom:16px;
}
.dot-live{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12.5px;
  font-weight:500;
  color:var(--glow);
  background:rgba(0,240,200,.08);
  border:1px solid rgba(0,240,200,.3);
  border-radius:999px;
  padding:3px 10px;
}
.dot-live::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--glow);
  box-shadow:0 0 10px var(--glow);
}
.device-list{display:grid;gap:10px;margin-bottom:16px;}
.device-list li{
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(16,24,48,.7);
  border:1px solid var(--line);
  font-size:14px;
}
.device-list .dev-icon{
  width:34px;height:34px;
  flex:0 0 auto;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(42,212,255,.1);
  border:1px solid rgba(42,212,255,.24);
  color:var(--primary);
}
.device-list strong{display:block;color:var(--t1);font-size:14px;font-weight:600;}
.device-list span{font-size:12.5px;color:var(--t3);}
.device-note{font-size:12.5px;color:var(--t3);line-height:1.7;}

/* ===== 锚点条 ===== */
.anchor-bar{
  position:sticky;
  top:68px;
  z-index:40;
  background:rgba(10,15,30,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;
  gap:10px;
  padding-top:12px;
  padding-bottom:12px;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  flex:0 0 auto;
  font-size:14px;
  color:var(--t2);
  border:1px solid var(--line);
  border-radius:999px;
  padding:7px 18px;
  transition:color .22s ease, border-color .22s ease, box-shadow .22s ease, background .22s ease;
}
.anchor-inner a:hover{color:var(--t1);border-color:var(--line-strong);box-shadow:0 0 16px rgba(42,212,255,.16);}
.anchor-inner a.is-active{
  color:var(--primary);
  border-color:var(--line-strong);
  background:rgba(42,212,255,.08);
  box-shadow:0 0 16px rgba(42,212,255,.2);
}

/* ===== 指标条 ===== */
.metrics{padding:44px 0;}
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.metric{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 20px;
  text-align:center;
  box-shadow:var(--shadow-card);
  transition:transform .26s ease, box-shadow .26s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);}
.metric strong{
  display:block;
  font-size:clamp(30px,3.4vw,42px);
  font-weight:700;
  color:var(--t1);
  font-variant-numeric:tabular-nums;
  line-height:1.15;
}
.metric strong em{
  font-style:normal;
  font-size:.5em;
  color:var(--primary);
  margin-left:4px;
}
.metric span{
  display:block;
  margin-top:6px;
  font-size:14px;
  color:var(--t3);
}

/* ===== 交替图文 ===== */
.alt-list{display:grid;gap:72px;}
.alt-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.alt-row.reverse .alt-figure{order:2;}
.alt-figure{
  margin:0;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:var(--bg-2);
}
.alt-figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:0;
  transition:transform .32s ease;
}
.alt-figure:hover img{transform:scale(1.04);}
.alt-body .tag{
  display:inline-block;
  font-size:12.5px;
  color:var(--primary);
  background:rgba(42,212,255,.1);
  border:1px solid rgba(42,212,255,.26);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:14px;
}
.alt-body h3{margin-bottom:12px;}
.alt-body p{margin-bottom:16px;}
.check-list{display:grid;gap:10px;}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:14.5px;
  color:var(--t2);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:2px;top:9px;
  width:11px;height:6px;
  border-left:2px solid var(--glow);
  border-bottom:2px solid var(--glow);
  transform:rotate(-45deg);
}

/* ===== 标签云 ===== */
.tag-cloud{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.tag-cloud span{
  font-size:13.5px;
  padding:8px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(16,24,48,.6);
  color:var(--t2);
  transition:color .22s ease, border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}
.tag-cloud span:hover{
  color:var(--t1);
  border-color:var(--line-strong);
  box-shadow:0 0 18px rgba(42,212,255,.18);
  transform:translateY(-2px);
}
.tag-cloud span.purple{color:#c6b8ff;border-color:rgba(123,92,255,.35);background:rgba(123,92,255,.08);}
.tag-cloud span.amber{color:var(--amber);border-color:rgba(255,180,84,.32);background:rgba(255,180,84,.07);}

/* ===== 卡组 ===== */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .26s ease, box-shadow .26s ease, border-color .26s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:var(--line-strong);}
.card h3{font-size:18px;margin-bottom:10px;}
.card p{font-size:14.5px;color:var(--t2);}
.card .card-icon{
  width:42px;height:42px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(42,212,255,.1);
  border:1px solid rgba(42,212,255,.24);
  color:var(--primary);
  margin-bottom:16px;
}

/* ===== 对照双栏 ===== */
.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  margin-top:28px;
}
.compare-box{
  border-radius:var(--r-card);
  padding:26px;
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow-card);
}
.compare-box.good{border-left:3px solid var(--glow);}
.compare-box.bad{border-left:3px solid var(--amber);}
.compare-box h3{font-size:18px;margin-bottom:14px;}
.compare-box ul{display:grid;gap:10px;}
.compare-box li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--t2);
}
.compare-box li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
}
.compare-box.good li::before{background:var(--glow);}
.compare-box.bad li::before{background:var(--amber);}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 44px 20px 0;
  position:relative;
  font-size:16px;
  font-weight:600;
  color:var(--t1);
  transition:color .22s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:10px;
  top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--primary);
  transition:transform .26s ease, color .22s ease;
  line-height:1;
}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq-item summary:hover{color:var(--primary);}
.faq-body{
  padding:0 40px 20px 16px;
  border-left:3px solid var(--primary);
  margin-left:2px;
  font-size:15px;
  color:var(--t2);
  animation:fadeUp .26s ease;
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(-4px);}
  to{opacity:1;transform:translateY(0);}
}

/* ===== 相关分类 ===== */
.related-links{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:24px;
}
.pill-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  padding:11px 22px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--t2);
  background:rgba(16,24,48,.5);
  transition:color .22s ease, border-color .22s ease, box-shadow .24s ease, transform .2s ease;
  min-height:44px;
}
.pill-link::after{content:"→";color:var(--primary);transition:transform .22s ease;display:inline-block;}
.pill-link:hover{
  color:var(--t1);
  border-color:var(--line-strong);
  box-shadow:0 0 22px rgba(42,212,255,.2);
  transform:translateY(-2px);
}
.pill-link:hover::after{transform:translateX(4px);}

/* ===== CTA ===== */
.cta-band{
  position:relative;
  border-radius:var(--r-card);
  padding:52px 40px;
  border:1px solid var(--line);
  background:
    radial-gradient(520px 260px at 12% 0%, rgba(42,212,255,.16), transparent 70%),
    radial-gradient(520px 260px at 88% 100%, rgba(123,92,255,.16), transparent 70%),
    rgba(18,28,52,.6);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  text-align:center;
  overflow:hidden;
}
.cta-band h2{margin-bottom:14px;}
.cta-band p{max-width:640px;margin:0 auto 26px;color:var(--t2);}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}
.cta-note{margin-top:18px;font-size:13px;color:var(--t3);}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid transparent;
  position:relative;
  margin-top:var(--section-gap);
  padding-top:64px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(42,212,255,.5),rgba(123,92,255,.35),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand p{font-size:14px;color:var(--t3);margin-top:16px;max-width:340px;}
.footer-col h4{
  font-size:15px;
  margin-bottom:16px;
  color:var(--t1);
}
.footer-col a,.footer-col p{
  display:block;
  font-size:14px;
  color:var(--t3);
  margin-bottom:10px;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t3);
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  :root{--section-gap:68px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:absolute;
    top:68px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--bg-1);
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(0,0,0,.5);
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease;
  }
  .nav-links.open{max-height:460px;}
  .nav-links > a{
    padding:0 24px;
    height:52px;
    display:flex;
    align-items:center;
    border-bottom:1px solid var(--line);
    font-size:15px;
  }
  .nav-links > a.active::after{display:none;}
  .nav-links > a.active{background:rgba(42,212,255,.06);}
  .nav-cta{
    margin:16px 24px;
    justify-content:center;
    border-radius:var(--r-btn);
    height:auto !important;
    padding:13px 20px;
    border-bottom:0 !important;
  }
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .alt-list{gap:56px;}
}
@media (max-width:768px){
  :root{--section-gap:48px;}
  .container{padding:0 16px;}
  .page-hero{margin-top:60px;padding:52px 0 44px;}
  .header-inner{height:60px;}
  .nav-links{top:60px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .alt-row{grid-template-columns:1fr;gap:24px;}
  .alt-row.reverse .alt-figure{order:0;}
  .card-grid{grid-template-columns:1fr;}
  .compare-grid{grid-template-columns:1fr;}
  .anchor-bar{top:60px;}
  .cta-band{padding:38px 22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .metric-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .logo{font-size:16px;}
  .logo small{display:none;}
}

/* roulang page: category3 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1E;
  --bg-2:#101830;
  --primary:#2AD4FF;
  --primary-deep:#0B7FA8;
  --accent:#7B5CFF;
  --glow:#00F0C8;
  --amber:#FFB454;
  --t1:#EAF2FF;
  --t2:#A8B6D1;
  --t3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(42,212,255,.35);
  --glass:rgba(18,28,52,.55);
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:14px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::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:1.8;
  color:var(--t2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 6% -6%,rgba(42,212,255,.10),transparent 62%),
    radial-gradient(820px 620px at 102% 18%,rgba(123,92,255,.10),transparent 60%);
  background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.035;
  background-image:
    linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:#7CE4FF;}
h1,h2,h3,h4{color:var(--t1);margin:0;line-height:1.35;font-weight:700;}
p{margin:0 0 .9em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
section{scroll-margin-top:150px;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent) 46%,transparent);
}
.site-header.scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(0,0,0,.4);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--t1);
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  flex-shrink:0;
}
.logo:hover{color:var(--t1);}
.logo-dot{
  width:9px;height:9px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 12px rgba(42,212,255,.75);
  flex-shrink:0;
}
.logo small{
  display:block;
  font-size:11.5px;
  font-weight:400;
  color:var(--t3);
  letter-spacing:.02em;
  line-height:1.3;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:auto;
}
.nav-links > a{
  position:relative;
  font-size:15px;
  color:var(--t2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-links > a:hover{color:var(--t1);}
.nav-links > a.active{color:var(--primary);}
.nav-links > a.active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(42,212,255,.6);
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 20px !important;
  border-radius:var(--r-btn);
  font-size:14.5px !important;
  font-weight:600;
  color:#04121A !important;
  background:linear-gradient(135deg,var(--primary),var(--glow));
  box-shadow:0 0 0 1px rgba(42,212,255,.5),0 0 20px rgba(42,212,255,.28);
  transition:box-shadow .22s ease,transform .22s ease,filter .22s ease;
}
.nav-cta:hover{
  box-shadow:0 0 0 1px rgba(42,212,255,.6),0 0 32px rgba(42,212,255,.45);
  transform:translateY(-1px);
  filter:brightness(1.06);
  color:#04121A !important;
}
.nav-cta.active::after{display:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:rgba(16,24,48,.7);
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  padding:0;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--t1);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .22s ease,background-color .2s ease,border-color .2s ease,filter .2s ease;
  text-align:center;
}
.btn-primary{
  color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--glow));
  box-shadow:0 0 0 1px rgba(42,212,255,.5),0 0 20px rgba(42,212,255,.28);
}
.btn-primary:hover{
  color:#04121A;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(42,212,255,.6),0 0 32px rgba(42,212,255,.45);
  filter:brightness(1.06);
}
.btn-primary:active{transform:translateY(1px);filter:brightness(.92);}
.btn-ghost{
  color:var(--t1);
  background:transparent;
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{
  color:var(--t1);
  border-color:var(--line-strong);
  box-shadow:inset 0 0 20px rgba(42,212,255,.12);
  transform:translateY(-1px);
}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--primary);
  border-bottom:2px solid transparent;
}
.link-arrow svg{transition:transform .22s ease;}
.link-arrow:hover{border-bottom-color:rgba(42,212,255,.5);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12.5px;
  line-height:1.6;
  white-space:nowrap;
}
.badge-cyan{color:var(--primary);background:rgba(42,212,255,.10);border:1px solid rgba(42,212,255,.28);}
.badge-violet{color:#B9A6FF;background:rgba(123,92,255,.12);border:1px solid rgba(123,92,255,.3);}
.badge-amber{color:var(--amber);background:rgba(255,180,84,.1);border:1px solid rgba(255,180,84,.28);}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-size:13px;
  color:var(--t3);
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  margin-bottom:18px;
}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span.sep{color:rgba(107,122,153,.7);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.42;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.72),rgba(5,7,15,.92) 70%,var(--bg-0));
}
.hero-inner{
  position:relative;
  padding:76px 0 64px;
}
.hero h1{
  font-size:clamp(30px,4.2vw,48px);
  letter-spacing:-.01em;
  margin-bottom:16px;
  max-width:16em;
}
.hero-sub{
  font-size:17px;
  color:var(--t2);
  max-width:640px;
  margin-bottom:26px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 吸顶锚点条 ---------- */
.anchor-bar{
  position:sticky;
  top:68px;
  z-index:80;
  background:rgba(5,7,15,.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{
  display:flex;
  gap:10px;
  padding:12px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll a{
  display:inline-flex;
  align-items:center;
  padding:8px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(16,24,48,.6);
  color:var(--t2);
  font-size:14px;
  white-space:nowrap;
  transition:all .2s ease;
}
.anchor-scroll a:hover{
  color:var(--t1);
  border-color:var(--line-strong);
  box-shadow:0 0 16px rgba(42,212,255,.18);
}
.anchor-scroll a.active{
  color:var(--primary);
  border-color:var(--line-strong);
  background:rgba(42,212,255,.08);
}

/* ---------- 板块通用 ---------- */
.block{padding:96px 0;}
.block-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:28px;}
.sec-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.sec-head p{color:var(--t2);font-size:15.5px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--primary);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:3px;height:22px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  box-shadow:0 0 12px rgba(42,212,255,.5);
}
.divider{
  height:1px;
  border:0;
  margin:0;
  background:linear-gradient(90deg,transparent,rgba(42,212,255,.35),transparent);
}

/* ---------- 概览 ---------- */
.overview-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:32px;
  align-items:start;
}
.prose p{font-size:16px;color:var(--t2);margin-bottom:1em;}
.prose strong{color:var(--t1);font-weight:600;}
.side-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.side-card h3{font-size:20px;margin-bottom:16px;}
.side-list li{
  display:flex;
  gap:12px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list li:first-child{padding-top:0;}
.side-icon{
  width:34px;height:34px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(42,212,255,.1);
  border:1px solid rgba(42,212,255,.24);
  color:var(--primary);
  flex-shrink:0;
}
.side-list strong{display:block;color:var(--t1);font-size:15px;font-weight:600;margin-bottom:2px;}
.side-list span{font-size:13.5px;color:var(--t3);line-height:1.7;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;max-width:900px;margin:0 auto;}
.timeline::before{
  content:"";
  position:absolute;
  left:23px;top:12px;bottom:12px;
  width:2px;
  background:linear-gradient(180deg,rgba(42,212,255,.55),rgba(123,92,255,.35),transparent);
}
.tl-item{
  position:relative;
  display:flex;
  gap:26px;
  padding-bottom:28px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:relative;
  z-index:2;
  width:48px;height:48px;
  border-radius:50%;
  flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
  color:var(--primary);
  background:var(--bg-2);
  border:1px solid var(--line-strong);
  box-shadow:0 0 0 5px rgba(5,7,15,.9),0 0 20px rgba(42,212,255,.22);
  font-variant-numeric:tabular-nums;
}
.tl-card{
  flex:1;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 24px;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.tl-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover),0 0 24px rgba(42,212,255,.18);
}
.tl-card h3{font-size:20px;margin-bottom:10px;}
.tl-card p{font-size:15px;color:var(--t2);margin-bottom:12px;}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tl-note{font-size:13px;color:var(--t3);}

/* ---------- 对照双栏 ---------- */
.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.compare-card{
  border-radius:var(--r-card);
  padding:28px;
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.compare-card.good{border-top:3px solid var(--primary);}
.compare-card.warn{border-top:3px solid var(--amber);}
.compare-card h3{
  font-size:20px;
  margin-bottom:6px;
  display:flex;align-items:center;gap:10px;
}
.compare-card .cmp-sub{font-size:13.5px;color:var(--t3);margin-bottom:18px;}
.cmp-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:14px;
  font-size:15px;
  color:var(--t2);
}
.cmp-list li:last-child{margin-bottom:0;}
.cmp-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:10px;height:10px;
  border-radius:3px;
  background:rgba(42,212,255,.85);
  box-shadow:0 0 10px rgba(42,212,255,.4);
}
.compare-card.warn .cmp-list li::before{
  background:rgba(255,180,84,.85);
  box-shadow:0 0 10px rgba(255,180,84,.35);
}

/* ---------- 数据小结 ---------- */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.stat-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover),0 0 24px rgba(42,212,255,.16);
}
.stat-num{
  font-size:clamp(30px,3.4vw,40px);
  font-weight:700;
  color:var(--glow);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  margin-bottom:10px;
  letter-spacing:-.01em;
}
.stat-label{font-size:15px;color:var(--t1);font-weight:600;margin-bottom:6px;}
.stat-desc{font-size:13.5px;color:var(--t3);line-height:1.7;}

/* ---------- 互链 ---------- */
.cross-links{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.cross-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 22px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  color:var(--t1);
  font-size:14.5px;
  background:transparent;
  transition:all .22s ease;
}
.cross-links a:hover{
  border-color:var(--line-strong);
  box-shadow:0 0 22px rgba(42,212,255,.25);
  color:var(--primary);
  transform:translateY(-1px);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 4px 22px 16px;
  background:none;
  border:0;
  color:var(--t1);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  position:relative;
  transition:color .2s ease;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:0;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  border-radius:2px;
  transition:height .26s ease;
}
.faq-item.open .faq-q::before{height:22px;}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  position:relative;
  width:18px;height:18px;
  flex-shrink:0;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
  transition:transform .26s ease,opacity .26s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s ease;
}
.faq-a-inner{
  padding:0 40px 22px 16px;
  font-size:15px;
  color:var(--t2);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:rgba(18,28,52,.55);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:52px 44px;
  box-shadow:var(--shadow-card);
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  width:520px;height:520px;
  top:-260px;left:50%;
  transform:translateX(-50%);
  background:radial-gradient(circle,rgba(42,212,255,.22),transparent 66%);
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  width:420px;height:420px;
  bottom:-240px;right:-80px;
  background:radial-gradient(circle,rgba(123,92,255,.20),transparent 68%);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px;}
.cta-band p{max-width:620px;margin:0 auto 26px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-hint{margin-top:18px;font-size:13px;color:var(--t3);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  position:relative;
  margin-top:0;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(42,212,255,.5),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:36px;
  padding:64px 0 42px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--t3);max-width:340px;line-height:1.8;}
.footer-col h4{
  font-size:15px;
  color:var(--t1);
  margin-bottom:16px;
  font-weight:600;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:var(--t3);
  padding:6px 0;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--primary);}
.footer-col p{font-size:14px;color:var(--t3);margin-bottom:8px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--t3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 22px;}
}
@media (max-width:1024px){
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;
    top:60px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:8px 20px 22px;
    background:var(--bg-1);
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px rgba(0,0,0,.5);
    transform:translateY(-14px);
    opacity:0;
    pointer-events:none;
    transition:transform .25s ease,opacity .25s ease;
    max-height:calc(100vh - 60px);
    overflow-y:auto;
  }
  .nav-links.open{transform:none;opacity:1;pointer-events:auto;}
  .nav-links > a{
    font-size:16px;
    min-height:52px;
    display:flex;
    align-items:center;
    border-bottom:1px solid var(--line);
    padding:0;
  }
  .nav-links > a.active::after{display:none;}
  .nav-links > a.active{color:var(--primary);}
  .nav-cta{
    margin-top:16px;
    min-height:46px !important;
    border-radius:var(--r-btn);
    justify-content:center;
    box-shadow:0 0 0 1px rgba(42,212,255,.5),0 0 20px rgba(42,212,255,.28);
  }
  .header-inner{min-height:60px;}
  .anchor-bar{top:60px;}
  .block{padding:68px 0;}
  .overview-grid{grid-template-columns:1fr;gap:26px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:52px 0 34px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .hero-inner{padding:52px 0 46px;}
  .hero h1{font-size:clamp(28px,8vw,34px);}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 220px;}
  .block{padding:48px 0;}
  .compare-grid{grid-template-columns:1fr;}
  .timeline::before{left:19px;}
  .tl-item{gap:18px;}
  .tl-dot{width:40px;height:40px;font-size:14px;}
  .tl-card{padding:20px;}
  .cta-band{padding:38px 22px;}
  .cta-actions .btn{flex:1 1 200px;}
  .faq-q{padding:20px 4px 20px 14px;font-size:15.5px;}
  .faq-a-inner{padding:0 28px 20px 14px;}
}
@media (max-width:520px){
  .stats-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-tags .badge{font-size:12px;}
  .anchor-scroll a{padding:8px 14px;font-size:13.5px;}
}

/* roulang page: category4 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1E;
  --bg-2:#101830;
  --primary:#2AD4FF;
  --primary-deep:#0B7FA8;
  --accent:#7B5CFF;
  --glow:#00F0C8;
  --amber:#FFB454;
  --t1:#EAF2FF;
  --t2:#A8B6D1;
  --t3:#6B7A99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(42,212,255,.35);
  --glass:rgba(18,28,52,.55);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--t2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 8% -6%, rgba(42,212,255,.10), transparent 62%),
    radial-gradient(760px 560px at 100% 10%, rgba(123,92,255,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:auto,auto,44px 44px,44px 44px;
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:hover{color:#7FE7FF;}
h1,h2,h3,h4{color:var(--t1);margin:0;line-height:1.35;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{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;border-radius:4px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.site-header::before{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent) 58%,transparent);
}
.site-header.scrolled{
  border-bottom:1px solid var(--line);
  box-shadow:0 6px 20px rgba(0,0,0,.4);
}
.nav-bar{
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--t1);font-size:18px;font-weight:700;letter-spacing:.01em;
}
.logo:hover{color:var(--t1);}
.logo-dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(42,212,255,.9);
  flex:0 0 auto;
}
.logo small{
  display:block;font-size:11.5px;font-weight:400;color:var(--t3);
  letter-spacing:.08em;margin-top:2px;
}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links > a{
  position:relative;font-size:15px;color:var(--t2);padding:6px 0;
}
.nav-links > a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-links > a:hover{color:var(--t1);}
.nav-links > a:hover::after{transform:scaleX(1);}
.nav-links > a.active{color:var(--primary);}
.nav-links > a.active::after{
  transform:scaleX(1);
  box-shadow:0 0 12px rgba(42,212,255,.6);
}
.nav-links > a.nav-cta{
  color:#04131B;font-weight:700;font-size:14.5px;
  padding:11px 22px;border-radius:var(--radius-btn);
  background:linear-gradient(135deg,var(--primary),var(--glow));
  box-shadow:0 0 0 1px rgba(42,212,255,.5), 0 0 20px rgba(42,212,255,.28);
  transition:transform .2s ease,box-shadow .24s ease,filter .2s ease;
}
.nav-links > a.nav-cta::after{display:none;}
.nav-links > a.nav-cta:hover{
  color:#04131B;transform:translateY(-1px);filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(42,212,255,.7), 0 0 32px rgba(42,212,255,.45);
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.nav-toggle span{
  display:block;width:20px;height:2px;background:var(--t1);border-radius:2px;
  position:relative;transition:background .2s ease;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--t1);border-radius:2px;
  transition:transform .24s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}
.nav-drawer{
  display:none;background:var(--bg-1);border-top:1px solid var(--line);
  padding:8px 0 16px;
}
.nav-drawer.open{display:block;}
.nav-drawer a{
  display:flex;align-items:center;min-height:52px;padding:0 24px;
  color:var(--t2);font-size:15.5px;border-bottom:1px solid var(--line);
}
.nav-drawer a.active{color:var(--primary);}
.nav-drawer a:last-child{border-bottom:0;}

/* ============ 通用区块 ============ */
.section{padding:96px 0;}
.section.alt{background:var(--bg-1);}
.section-head{max-width:760px;margin-bottom:28px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);
  padding:5px 12px;border-radius:999px;border:1px solid var(--line-strong);
  background:rgba(42,212,255,.07);margin-bottom:16px;
}
.eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--glow);box-shadow:0 0 8px var(--glow);}
h2.section-title{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--t2);}
.divider{
  height:1px;border:0;margin:0;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s ease,box-shadow .24s ease,filter .2s ease,border-color .22s ease,background .22s ease;
}
.btn-primary{
  color:#04131B;
  background:linear-gradient(135deg,var(--primary),var(--glow));
  box-shadow:0 0 0 1px rgba(42,212,255,.5), 0 0 20px rgba(42,212,255,.28);
}
.btn-primary:hover{
  color:#04131B;transform:translateY(-1px);filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(42,212,255,.7), 0 0 32px rgba(42,212,255,.45);
}
.btn-primary:active{transform:translateY(1px);filter:brightness(.92);}
.btn-ghost{
  color:var(--t1);border:1px solid rgba(255,255,255,.18);
  background:transparent;
}
.btn-ghost:hover{
  color:var(--t1);border-color:var(--line-strong);
  box-shadow:inset 0 0 20px rgba(42,212,255,.12);
  transform:translateY(-1px);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;
}
.link-arrow svg{transition:transform .22s ease;}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.42;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(5,7,15,.94) 0%,rgba(5,7,15,.78) 46%,rgba(5,7,15,.55) 100%);
}
.hero-inner{position:relative;z-index:2;padding:64px 0 56px;max-width:820px;}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);margin-bottom:18px;
}
.crumb a{color:var(--t3);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:var(--t3);opacity:.6;}
.hero h1{
  font-size:clamp(30px,4.2vw,48px);
  margin-bottom:18px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--primary),var(--glow));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--t2);max-width:680px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
  max-width:660px;
}
.hero-stat{
  padding:16px 18px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
}
.hero-stat b{
  display:block;font-size:30px;font-weight:700;color:var(--t1);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stat b i{font-style:normal;color:var(--glow);font-size:18px;}
.hero-stat span{font-size:13px;color:var(--t3);}

/* ============ 锚点胶囊条 ============ */
.anchor-bar{
  position:sticky;top:70px;z-index:100;
  background:rgba(10,15,30,.9);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{
  display:flex;gap:10px;overflow-x:auto;padding:14px 0;
  scrollbar-width:none;-ms-overflow-style:none;
}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll a{
  flex:0 0 auto;font-size:13.5px;color:var(--t2);
  padding:8px 18px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.02);white-space:nowrap;
  transition:color .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.anchor-scroll a:hover{
  color:var(--t1);border-color:var(--line-strong);
  background:rgba(42,212,255,.08);
  box-shadow:0 0 16px rgba(42,212,255,.18);
}

/* ============ 2×2 大图分区 ============ */
.blocks-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;
}
.media-block{
  position:relative;display:flex;flex-direction:column;
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.media-block:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover),0 0 24px rgba(42,212,255,.18);
}
.media-block .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.media-block .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .32s ease;
}
.media-block:hover .thumb img{transform:scale(1.04);}
.media-block .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.05),rgba(5,7,15,.62));
}
.media-block .badge-float{
  position:absolute;left:16px;bottom:14px;z-index:2;
  font-size:12.5px;padding:5px 12px;border-radius:999px;
  color:var(--primary);background:rgba(42,212,255,.14);
  border:1px solid var(--line-strong);
}
.media-body{padding:22px 24px 26px;}
.media-body h3{font-size:20px;margin-bottom:10px;}
.media-body p{color:var(--t2);font-size:15px;}
.media-body ul{margin-top:14px;display:grid;gap:8px;}
.media-body ul li{
  position:relative;padding-left:18px;font-size:14px;color:var(--t3);
}
.media-body ul li::before{
  content:"";position:absolute;left:0;top:11px;
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px rgba(42,212,255,.7);
}

/* ============ 速查表格 ============ */
.table-wrap{
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);overflow-x:auto;
}
table.ky-table{
  width:100%;min-width:820px;border-collapse:collapse;font-size:14.5px;
}
table.ky-table thead th{
  background:rgba(16,24,48,.92);
  color:var(--t1);font-weight:600;text-align:left;
  padding:16px 20px;font-size:14px;letter-spacing:.02em;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
table.ky-table tbody td{
  padding:16px 20px;color:var(--t2);
  border-bottom:1px solid var(--line);vertical-align:top;
}
table.ky-table tbody tr:nth-child(even){background:rgba(255,255,255,.018);}
table.ky-table tbody tr:hover{background:rgba(42,212,255,.06);}
table.ky-table tbody tr:last-child td{border-bottom:0;}
table.ky-table td strong{color:var(--t1);font-weight:600;}
table.ky-table .tag-cell{
  display:inline-block;font-size:12.5px;padding:3px 10px;border-radius:999px;
  color:var(--primary);background:rgba(42,212,255,.10);border:1px solid rgba(42,212,255,.22);
}
table.ky-table .tag-cell.purple{
  color:#B6A6FF;background:rgba(123,92,255,.13);border-color:rgba(123,92,255,.3);
}
table.ky-table .tag-cell.amber{
  color:var(--amber);background:rgba(255,180,84,.12);border-color:rgba(255,180,84,.3);
}
.table-note{margin-top:16px;font-size:13.5px;color:var(--t3);}

/* ============ 用户评价滑动 ============ */
.review-rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.review-rail::-webkit-scrollbar{height:6px;}
.review-rail::-webkit-scrollbar-thumb{background:rgba(42,212,255,.28);border-radius:999px;}
.review-card{
  flex:0 0 360px;scroll-snap-align:start;
  padding:26px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.review-card:hover{
  transform:translateY(-4px);border-color:var(--line-strong);
  box-shadow:var(--shadow-hover),0 0 24px rgba(42,212,255,.16);
}
.review-card .quote-mark{
  font-size:34px;line-height:1;color:var(--primary);opacity:.55;font-weight:700;
  display:block;margin-bottom:8px;
}
.review-card p{font-size:15px;color:var(--t2);}
.review-meta{
  display:flex;align-items:center;gap:12px;margin-top:20px;
  padding-top:16px;border-top:1px solid var(--line);
}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#04131B;
  background:linear-gradient(135deg,var(--primary),var(--glow));
}
.review-meta b{display:block;color:var(--t1);font-size:14.5px;font-weight:600;}
.review-meta span{font-size:12.5px;color:var(--t3);}
.rail-hint{font-size:13px;color:var(--t3);margin-top:4px;}

/* ============ FAQ ============ */
.faq-list{max-width:860px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0 22px 18px;
  font-size:16px;font-weight:600;color:var(--t1);
  transition:color .22s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;
  border-radius:2px;background:var(--primary);opacity:0;
  box-shadow:0 0 12px rgba(42,212,255,.6);
  transition:opacity .24s ease;
}
.faq-item[open] summary::before{opacity:1;}
.faq-item summary:hover{color:var(--primary);}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line-strong);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);
  transform:translate(-50%,-50%);border-radius:2px;
  transition:transform .26s ease,opacity .26s ease;
}
.faq-icon::before{width:10px;height:1.6px;}
.faq-icon::after{width:1.6px;height:10px;}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-item[open] .faq-icon{box-shadow:0 0 14px rgba(42,212,255,.4);}
.faq-answer{
  padding:0 0 24px 18px;font-size:15px;color:var(--t2);max-width:760px;
}

/* ============ 互链胶囊 ============ */
.cross-links{display:flex;flex-wrap:wrap;gap:14px;}
.cross-links a{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-size:14.5px;
  color:var(--t2);border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:color .22s ease,border-color .22s ease,box-shadow .24s ease,transform .2s ease;
}
.cross-links a:hover{
  color:var(--t1);border-color:var(--line-strong);transform:translateY(-1px);
  box-shadow:0 0 22px rgba(42,212,255,.24);
}
.cross-links a::after{content:"→";color:var(--primary);}

/* ============ 表单 & CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-card);
  border:1px solid var(--line-strong);
  background:linear-gradient(140deg,rgba(18,28,52,.9),rgba(10,15,30,.86));
  box-shadow:var(--shadow-card),0 0 40px rgba(42,212,255,.12);
  padding:44px 40px;
}
.cta-panel::before{
  content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;
  border-radius:50%;background:radial-gradient(circle,rgba(42,212,255,.24),transparent 68%);
  pointer-events:none;
}
.cta-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:start;
}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.cta-copy p{color:var(--t2);font-size:15.5px;margin-bottom:22px;}
.cta-list{display:grid;gap:10px;margin-bottom:26px;}
.cta-list li{position:relative;padding-left:24px;font-size:14.5px;color:var(--t2);}
.cta-list li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:7px;
  border-left:2px solid var(--glow);border-bottom:2px solid var(--glow);
  transform:rotate(-45deg);border-radius:1px;
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13.5px;color:var(--t3);}
.field input,.field textarea{
  width:100%;height:46px;padding:0 14px;
  border-radius:12px;border:1px solid var(--line);
  background:var(--bg-2);color:var(--t1);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--t3);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(42,212,255,.15);
}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px;}
.form-msg{font-size:13px;}
.form-msg.ok{color:var(--glow);}
.form-msg.err{color:#FF7A7A;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-1);border-top:1px solid var(--line);
  position:relative;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
  padding:64px 0 40px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--t3);max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--t1);}
.footer-col a{
  display:block;font-size:14.5px;color:var(--t3);padding:7px 0;
  transition:color .22s ease;
}
.footer-col a:hover{color:var(--primary);}
.footer-col p{font-size:14px;color:var(--t3);padding:5px 0;}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  padding:22px 0 30px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t3);
}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:38px;height:38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--t3);
  transition:color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.socials a:hover{color:var(--primary);border-color:var(--line-strong);box-shadow:0 0 18px rgba(42,212,255,.2);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:68px 0;}
  .blocks-grid{gap:20px;}
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .hero-inner{padding:44px 0 40px;}
  .hero-stats{grid-template-columns:1fr;gap:12px;}
  .hero-stat{display:flex;align-items:baseline;gap:12px;padding:14px 16px;}
  .hero-stat b{font-size:24px;}
  .anchor-bar{top:62px;}
  .blocks-grid{grid-template-columns:minmax(0,1fr);}
  .review-card{flex:0 0 84%;}
  .form-grid{grid-template-columns:minmax(0,1fr);}
  .cta-panel{padding:30px 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 28px;}
  .nav-bar{height:60px;}
  .logo{font-size:16.5px;}
}
@media (max-width:480px){
  .hero h1{font-size:28px;}
  h2.section-title{font-size:22px;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .review-card{flex:0 0 92%;}
}