/* roulang page: index */
:root{
  --sky:#35BFF0;
  --sky-deep:#1C8FC4;
  --aurora:#4BE0A8;
  --sunset:#FF9147;
  --bg:#07131C;
  --bg-alt:#0A1926;
  --panel:#0D1F2E;
  --line:rgba(53,191,240,.14);
  --line-strong:rgba(53,191,240,.34);
  --text:#E8F4FA;
  --muted:#8FA9B8;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 60px -30px rgba(0,0,0,.7);
  --glow:0 0 24px rgba(53,191,240,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.mono{font-family:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;letter-spacing:.4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--sky);outline-offset:2px;border-radius:6px;
}

/* ===== 顶部活动条 ===== */
.topbar{background:linear-gradient(90deg,rgba(53,191,240,.16),rgba(75,224,168,.10));border-bottom:1px solid var(--line)}
.topbar[hidden]{display:none}
.topbar-inner{height:44px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;white-space:nowrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:10px;
  font-size:12px;line-height:1.6;background:rgba(75,224,168,.12);
  border:1px solid rgba(75,224,168,.42);color:#BFF6E2;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--aurora);box-shadow:0 0 8px var(--aurora)}
.badge-tag{background:rgba(53,191,240,.12);border-color:var(--line-strong);color:#CFEBF8}
.countdown{font-size:13px;color:#D8ECF6;overflow:hidden;text-overflow:ellipsis}
.countdown b{color:var(--sunset);font-weight:600}
.topbar-close{
  background:transparent;border:1px solid var(--line);color:var(--muted);
  width:26px;height:26px;border-radius:8px;cursor:pointer;line-height:1;transition:.2s;
}
.topbar-close:hover{color:var(--text);border-color:var(--line-strong)}

/* ===== 导航 ===== */
.site-header{position:sticky;top:0;z-index:60}
.nav{background:rgba(7,19,28,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background .25s,border-color .25s,box-shadow .25s}
.site-header.is-scrolled .nav{background:rgba(6,16,24,.95);border-bottom-color:var(--line);box-shadow:0 18px 40px -30px rgba(0,0,0,.9)}
.nav-inner{height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--sky),var(--sky-deep));
  color:#04121A;font-weight:800;font-size:18px;box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-main{font-size:17px;font-weight:700;letter-spacing:.3px}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:2.4px;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;display:block;padding:9px 14px;border-radius:10px;
  font-size:15px;color:#C9DCE7;transition:color .2s,background .2s;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--sky),var(--aurora));transform:scaleX(0);transform-origin:left;transition:transform .25s;
}
.nav-links a:hover{color:#fff;background:rgba(53,191,240,.08)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:#fff}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-sm);font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;
}
.btn-primary{background:var(--sky);color:#04121A;box-shadow:var(--glow)}
.btn-primary:hover{background:#4BC9F3;transform:translateY(-1px);box-shadow:0 0 30px rgba(53,191,240,.5)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 14px rgba(53,191,240,.3)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:#D5EAF5}
.btn-ghost:hover{border-color:var(--sky);color:#fff;background:rgba(53,191,240,.08);transform:translateY(-1px)}
.btn-cta{padding:11px 20px;font-size:14px}
.btn-cta .cta-dot{width:7px;height:7px;border-radius:50%;background:#0B3A24;box-shadow:0 0 0 3px rgba(4,18,26,.35)}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;background:rgba(53,191,240,.1);
  border:1px solid var(--line);color:#D5EAF5;cursor:pointer;
}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:rgba(6,16,24,.98);padding:12px 24px 20px}
.mobile-drawer.open{display:block}
.mobile-drawer a{display:block;padding:13px 4px;border-bottom:1px solid rgba(53,191,240,.08);color:#CFE2EC}
.mobile-drawer a.active{color:var(--sky)}
.mobile-drawer .btn{width:100%;margin-top:16px}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:88px 0 96px;background:var(--bg)}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(7,19,28,.86),rgba(7,19,28,.94)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(700px 380px at 22% -10%,rgba(18,58,82,.9),transparent 70%);
}
.hero-inner{position:relative;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;color:#9FD9F1;
  border:1px solid var(--line-strong);background:rgba(53,191,240,.08);
  padding:6px 12px;border-radius:999px;margin-bottom:22px;
}
.hero h1{font-size:48px;line-height:1.22;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:var(--sky);text-shadow:0 0 26px rgba(53,191,240,.45)}
.hero-sub{margin-top:20px;font-size:17px;color:#B9CFDB;max-width:560px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:10px;font-size:12px;
  background:rgba(53,191,240,.12);border:1px solid var(--line-strong);color:#C9E9F8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-panel{
  background:rgba(13,31,46,.72);border:1px solid var(--line-strong);border-radius:var(--radius);
  padding:26px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.panel-head span:first-child{font-size:14px;color:#9FD9F1;letter-spacing:1px}
.panel-row{display:flex;align-items:center;justify-content:space-between;padding:15px 0;border-bottom:1px dashed rgba(53,191,240,.14)}
.panel-row:last-child{border-bottom:0;padding-bottom:0}
.panel-label{font-size:14px;color:var(--muted)}
.panel-value{font-size:15px;color:#E6F5FC}
.panel-value.ok{color:var(--aurora)}

/* ===== 区块通用 ===== */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-title{font-size:34px;letter-spacing:.4px}
.section-desc{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:640px}
.link-more{font-size:14.5px;color:var(--sky);white-space:nowrap;transition:transform .2s,color .2s}
.link-more:hover{color:#7ED7F7;transform:translateX(3px)}

/* ===== 入口卡片 ===== */
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);transition:transform .25s,border-color .25s,box-shadow .25s;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 28px 64px -28px rgba(0,0,0,.85),inset 0 0 0 1px rgba(53,191,240,.2)}
.card-lg{grid-column:span 2;display:grid;grid-template-columns:1.05fr 1fr;gap:28px;align-items:center;padding:0;overflow:hidden}
.card-lg-media{position:relative;height:100%;min-height:260px}
.card-lg-media img{width:100%;height:100%;object-fit:cover}
.card-lg-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,31,46,.15),rgba(13,31,46,.85))}
.card-lg-body{padding:32px 32px 32px 4px}
.card-num{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;font-weight:600;color:var(--sunset);
  border:1px solid rgba(255,145,71,.4);background:rgba(255,145,71,.1);border-radius:8px;padding:2px 8px;display:inline-block;
}
.card h3{font-size:22px;margin:16px 0 10px}
.card p{color:var(--muted);font-size:15px}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14.5px;color:var(--sky)}
.card-link:hover{color:#7ED7F7}
.card-sm .card-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(53,191,240,.1);border:1px solid var(--line-strong);color:var(--sky);font-size:18px;
}
.entry-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}

/* ===== 数据区 ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:36px 26px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{font-size:42px;font-weight:700;color:#fff;font-family:ui-monospace,Menlo,Consolas,monospace}
.stat-num span{font-size:20px;color:var(--sky);margin-left:4px}
.stat-label{margin-top:8px;font-size:14.5px;color:var(--muted)}

/* ===== 场景区 ===== */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.scene + .scene{margin-top:64px}
.scene-reverse .scene-media{order:2}
.scene-media{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.scene-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,19,28,.1),rgba(7,19,28,.62))}
.scene-body h3{font-size:22px;margin-bottom:14px}
.scene-body p{color:var(--muted);font-size:15.5px;margin-bottom:10px}
.label-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}

/* ===== 流程区 ===== */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.steps::before{
  content:"";position:absolute;left:6%;right:6%;top:15px;height:1px;
  background:linear-gradient(90deg,rgba(53,191,240,0),rgba(53,191,240,.55),rgba(75,224,168,.55),rgba(53,191,240,0));
}
.step{position:relative;padding-top:44px}
.step-dot{
  position:absolute;top:0;left:0;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  background:var(--bg-alt);border:1px solid var(--line-strong);color:var(--sky);font-size:13px;font-weight:700;
  font-family:ui-monospace,Menlo,Consolas,monospace;
}
.step.is-current .step-dot{background:var(--sunset);border-color:var(--sunset);color:#1A0E04;box-shadow:0 0 18px rgba(255,145,71,.5)}
.step h3{font-size:19px;margin-bottom:10px}
.step p{color:var(--muted);font-size:14.5px}

/* ===== 最新信息 ===== */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 28px 60px -30px rgba(0,0,0,.9)}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,19,28,.05),rgba(7,19,28,.55))}
.post-body{padding:20px 22px 24px}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.post-meta .date{font-size:12.5px;color:var(--muted)}
.post-title{font-size:17.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover .post-title{color:var(--sky)}
.post-excerpt{margin-top:10px;font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  border:1px dashed var(--line-strong);border-radius:var(--radius);background:rgba(13,31,46,.5);text-align:center;padding:32px;
}
.empty-icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:rgba(53,191,240,.1);border:1px solid var(--line-strong);color:var(--sky);font-size:20px}
.empty-state p{color:var(--muted);font-size:15px}

/* ===== FAQ ===== */
.faq{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color .25s,background .25s}
.faq-item.open{border-color:var(--line-strong);background:#0E2231}
.faq-q{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 24px;background:transparent;border:0;cursor:pointer;text-align:left;font-size:16.5px;font-weight:600;
}
.faq-icon{flex-shrink:0;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;background:rgba(53,191,240,.1);border:1px solid var(--line-strong);color:var(--sky);font-size:16px;line-height:1;transition:transform .25s}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--sunset);border-color:rgba(255,145,71,.5)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 24px 22px;color:var(--muted);font-size:15px;line-height:1.8}

/* ===== 联系区 ===== */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start}
.form{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;color:#A9C3D1;margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-sm);
  background:#081824;border:1px solid var(--line);color:var(--text);transition:border-color .2s,box-shadow .2s;
}
.field textarea{height:132px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#5F7B8B}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--sky);box-shadow:0 0 0 3px rgba(53,191,240,.18);
}
.form .btn-primary{width:100%;margin-top:6px;min-height:48px}
.form-note{margin-top:14px;font-size:13px;color:var(--muted)}
.form-success{margin-top:14px;font-size:14px;color:var(--aurora);display:none}
.form-success.show{display:block}
.info-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.info-row{display:flex;justify-content:space-between;gap:16px;padding:15px 0;border-bottom:1px dashed rgba(53,191,240,.14)}
.info-row:last-child{border-bottom:0}
.info-row span:first-child{color:var(--muted);font-size:14px}
.info-row span:last-child{font-size:14.5px}
.info-card h3{font-size:19px;margin-bottom:18px}

/* ===== CTA 条 ===== */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(53,191,240,.16),rgba(75,224,168,.08));
  border:1px solid var(--line-strong);border-radius:var(--radius);padding:34px 36px;
}
.cta-bar h2{font-size:26px}
.cta-bar p{color:#B9CFDB;font-size:15px;margin-top:10px}

/* ===== 页脚 ===== */
.footer{background:#050F16;border-top:1px solid var(--line);padding:64px 0 0;position:relative}
.footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(53,191,240,0),rgba(53,191,240,.6),rgba(75,224,168,.5),rgba(53,191,240,0))}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand-main{font-size:18px}
.footer-brand p{margin-top:16px;color:var(--muted);font-size:14.5px;max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:#DCEBF3}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14.5px;color:var(--muted);transition:color .2s,transform .2s,display .2s;display:inline-block}
.footer-links a:hover{color:var(--sky);transform:translateX(2px)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:#6E8794}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .hero h1{font-size:38px}
  .section{padding:72px 0}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .entry-grid{grid-template-columns:1fr}
  .card-lg{grid-column:span 1;grid-template-columns:1fr}
  .card-lg-body{padding:26px}
  .entry-row{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .scene{grid-template-columns:1fr;gap:26px}
  .scene-reverse .scene-media{order:0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps::before{display:none}
  .posts-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-links{display:none}
  .nav-toggle{display:grid;place-items:center}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .hero{padding:64px 0 72px}
  .hero h1{font-size:31px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .section-title{font-size:26px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .entry-row{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stat{padding:26px 18px}
  .stat-num{font-size:32px}
  .steps{grid-template-columns:1fr}
  .posts-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .form,.info-card{padding:22px}
  .cta-bar{padding:26px 22px}
  .cta-bar h2{font-size:21px}
  .cta-bar .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .topbar-inner{gap:10px}
  .topbar-close{display:none}
  .brand-sub{letter-spacing:1.4px;font-size:10px}
  .brand-main{font-size:15.5px}
}

/* roulang page: article */
:root{
  --sky:#35BFF0;
  --sky-deep:#1C8FC4;
  --aurora:#4BE0A8;
  --sunset:#FF9147;
  --bg:#07131C;
  --bg-alt:#0A1926;
  --panel:#0E2130;
  --panel-2:#122838;
  --line:rgba(53,191,240,.14);
  --line-strong:rgba(53,191,240,.34);
  --text:#E9F5FB;
  --text-2:#B9CFDC;
  --muted:#87A0B1;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 60px -30px rgba(0,0,0,.7);
  --shadow-hover:0 32px 70px -30px rgba(0,0,0,.78);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0 0 auto 0;
  height:620px;
  background:radial-gradient(120% 100% at 50% -10%, rgba(18,58,82,.95) 0%, rgba(18,58,82,.28) 42%, rgba(7,19,28,0) 76%);
  pointer-events:none;
  z-index:0;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
::selection{background:rgba(53,191,240,.35)}

/* ---------- 顶栏 ---------- */
.topbar{
  background:linear-gradient(90deg,rgba(53,191,240,.16),rgba(75,224,168,.10) 60%,rgba(255,145,71,.12));
  border-bottom:1px solid var(--line);
  height:42px;
  display:flex;
  align-items:center;
  position:relative;
  z-index:60;
  overflow:hidden;
}
.topbar.is-hidden{display:none}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:10px;
  background:rgba(75,224,168,.12);
  border:1px solid rgba(75,224,168,.38);
  color:var(--aurora);font-size:12px;white-space:nowrap;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--aurora);display:inline-block;box-shadow:0 0 8px var(--aurora)}
.countdown{font-size:13px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.countdown b{color:var(--sunset);margin-left:6px;letter-spacing:.5px}
.topbar-close{font-size:20px;line-height:1;color:var(--muted);padding:2px 6px;border-radius:8px;transition:color .2s var(--ease),background .2s var(--ease)}
.topbar-close:hover{color:var(--text);background:rgba(255,255,255,.06)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:50}
.nav{
  background:rgba(7,19,28,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(53,191,240,.10);
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled .nav{
  background:rgba(6,16,24,.94);
  border-bottom-color:var(--line-strong);
  box-shadow:0 18px 40px -28px rgba(0,0,0,.9);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--sky),var(--sky-deep));
  color:#04121A;font-weight:800;font-size:19px;
  box-shadow:0 0 22px rgba(53,191,240,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:17px;font-weight:700;letter-spacing:.2px}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:2px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  transition:color .22s var(--ease),background .22s var(--ease);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--sky),rgba(75,224,168,.7));
  transform:scaleX(0);transform-origin:left;
  transition:transform .28s var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(53,191,240,.07)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--sky);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{display:none;font-size:22px;color:var(--text-2);padding:6px 10px;border-radius:10px;border:1px solid var(--line)}
.nav-toggle:hover{color:var(--text);border-color:var(--line-strong)}
.mobile-drawer{display:none;flex-direction:column;gap:4px;padding:12px 24px 20px;background:rgba(6,16,24,.98);border-bottom:1px solid var(--line)}
.mobile-drawer a{padding:12px 10px;border-radius:10px;color:var(--text-2);font-size:15px}
.mobile-drawer a.active{color:var(--sky);background:rgba(53,191,240,.08)}
.mobile-drawer a.btn{margin-top:8px;justify-content:center;color:#04121A}
.mobile-drawer.is-open{display:flex}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);
  font-weight:600;font-size:15px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--sky);color:#04121A;
  box-shadow:0 0 24px rgba(53,191,240,.35);
}
.btn-primary:hover{background:#4CC8F4;transform:translateY(-1px);box-shadow:0 0 30px rgba(53,191,240,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 14px rgba(53,191,240,.28)}
.btn-ghost{
  border:1px solid var(--line-strong);color:var(--text);
  background:rgba(53,191,240,.05);
}
.btn-ghost:hover{background:rgba(53,191,240,.12);border-color:var(--sky);transform:translateY(-1px)}
.btn-cta{height:42px;padding:0 18px;font-size:14px}
.cta-dot{width:7px;height:7px;border-radius:50%;background:#04121A;box-shadow:0 0 0 3px rgba(4,18,26,.18)}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--sky);outline-offset:2px;border-radius:8px;
}

/* ---------- 文章页头 ---------- */
.page-head{
  padding:44px 0 34px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(10,25,38,.85),rgba(7,19,28,0)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  position:relative;
}
.page-head::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,19,28,.72),rgba(7,19,28,.94));pointer-events:none;
}
.page-head .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.crumb a{color:var(--muted);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--sky)}
.crumb .sep{color:rgba(135,160,177,.5)}
.crumb .current{color:var(--text-2);max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:inline-block;vertical-align:bottom}
.article-h1{
  font-size:44px;line-height:1.28;letter-spacing:-.4px;
  max-width:920px;margin-bottom:18px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:13px;color:var(--muted);padding-top:16px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:10px;font-size:12px;
  background:rgba(53,191,240,.12);border:1px solid rgba(53,191,240,.34);color:var(--sky);
}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--sky)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item i{color:var(--sky-deep)}

/* ---------- 正文 ---------- */
.article-wrap{padding:56px 0 40px}
.article-body{
  max-width:800px;margin:0 auto;
  font-size:17px;line-height:1.9;color:#D5E6EF;
}
.article-body> :first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:32px;line-height:1.35;color:var(--text);
  margin:44px 0 16px;padding-left:16px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--sky),var(--aurora));
}
.article-body h3{font-size:22px;color:var(--text);margin:32px 0 12px}
.article-body h4{font-size:18px;color:var(--text);margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:2px}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px;line-height:1.8}
.article-body ul>li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--sky);
}
.article-body ol{counter-reset:li}
.article-body ol>li{counter-increment:li}
.article-body ol>li::before{
  content:counter(li);
  position:absolute;left:0;top:.15em;
  width:18px;height:18px;border-radius:6px;display:grid;place-items:center;
  font-family:var(--mono);font-size:11px;color:#04121A;background:var(--sky);font-weight:700;
}
.article-body blockquote{
  margin:26px 0;padding:16px 20px;
  border-left:3px solid var(--sky);
  background:rgba(53,191,240,.07);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
}
.article-body th,.article-body td{
  border-bottom:1px solid var(--line);
  padding:12px 14px;text-align:left;
}
.article-body th{color:var(--text);font-weight:600;background:rgba(53,191,240,.06)}
.article-body img{
  border-radius:12px;margin:26px auto;
}
.article-body figure{margin:26px 0}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--muted);margin-top:10px;
}
.article-body a{color:var(--sky);border-bottom:1px solid rgba(53,191,240,.4);transition:border-color .2s var(--ease),color .2s var(--ease)}
.article-body a:hover{color:#6FD4F8;border-color:#6FD4F8}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0}

/* ---------- 正文尾部 ---------- */
.article-foot{max-width:800px;margin:44px auto 0;padding-top:26px;border-top:1px solid var(--line)}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px}
.related{padding:20px 0 0}
.related-title{font-size:22px;margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{
  display:flex;flex-direction:column;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--panel);overflow:hidden;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.related-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--panel-2)}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.related-card:hover .thumb img{transform:scale(1.04)}
.related-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,19,28,.05),rgba(7,19,28,.55))}
.related-card .body{padding:16px 18px 20px}
.related-card h3{font-size:16px;line-height:1.5;margin-bottom:10px;transition:color .2s var(--ease)}
.related-card:hover h3{color:var(--sky)}
.related-card .time{font-size:12px;color:var(--muted)}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:800px;margin:0 auto;padding:64px 24px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--radius);
  background:rgba(14,33,48,.6);
}
.empty-state .icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:16px;
  display:grid;place-items:center;font-size:22px;color:var(--sky);
  background:rgba(53,191,240,.12);border:1px solid rgba(53,191,240,.32);
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px}

/* ---------- CTA 条 ---------- */
.cta-band{padding:56px 0 84px}
.cta-inner{
  max-width:960px;margin:0 auto;text-align:center;
  padding:44px 32px;border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(150deg,rgba(18,58,82,.85),rgba(10,25,38,.95));
  box-shadow:var(--shadow);
  position:relative;overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;top:-90px;left:50%;transform:translateX(-50%);
  width:420px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,191,240,.34),rgba(53,191,240,0) 70%);
  pointer-events:none;
}
.cta-inner h2{font-size:30px;margin-bottom:14px;position:relative}
.cta-inner p{color:var(--text-2);font-size:16px;max-width:620px;margin:0 auto 26px;position:relative}

/* ---------- 页脚 ---------- */
.footer{
  border-top:1px solid var(--line);
  background:var(--bg-alt);
  padding:64px 0 0;
  position:relative;
}
.footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(53,191,240,0),var(--sky),rgba(75,224,168,.8),rgba(53,191,240,0));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
.footer-brand .brand-text{margin-bottom:16px}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.4px}
.footer-links li{margin-bottom:10px}
.footer-links a{
  font-size:14px;color:var(--muted);
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:var(--sky);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-inner{height:66px}
  .article-h1{font-size:34px}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:27px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .related-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .topbar{height:44px}
  .countdown{font-size:12px}
  .brand-main{font-size:15px}
  .brand-sub{letter-spacing:1px}
  .brand-mark{width:36px;height:36px;font-size:17px}
  .nav-right .btn-cta{display:none}
  .page-head{padding:32px 0 26px}
  .article-h1{font-size:26px}
  .crumb .current{max-width:180px}
  .article-wrap{padding:36px 0 24px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:23px;margin:36px 0 14px}
  .article-body h3{font-size:19px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-inner{padding:32px 20px}
  .cta-inner h2{font-size:23px}
  .btn{width:100%}
  .foot-actions .btn{width:100%}
  .mobile-drawer a.btn{width:100%}
}

/* roulang page: category1 */
:root{
  --sky:#35BFF0;
  --sky-deep:#1C8FC4;
  --aurora:#4BE0A8;
  --sunset:#FF9147;
  --bg:#07131C;
  --bg-alt:#0A1926;
  --panel:#0E2130;
  --panel-2:#102A3B;
  --text:#E8F4FB;
  --muted:#9BB4C4;
  --border:rgba(53,191,240,.14);
  --border-strong:rgba(53,191,240,.36);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 60px -30px rgba(0,0,0,.7);
  --shadow-hover:0 32px 68px -30px rgba(0,0,0,.78), 0 0 0 1px rgba(53,191,240,.28);
  --glow:0 0 24px rgba(53,191,240,.35);
  --sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:
    radial-gradient(900px 420px at 50% -160px, rgba(18,58,82,.95), rgba(7,19,28,0) 70%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease, opacity .2s ease;}
a:hover{color:var(--sky);}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

:focus-visible{outline:2px solid var(--sky);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- header / topbar ---------- */
.site-header{position:sticky;top:0;z-index:60;}
.topbar{
  background:linear-gradient(90deg, rgba(53,191,240,.18), rgba(75,224,168,.10));
  border-bottom:1px solid var(--border);
  font-size:13px;
  backdrop-filter:blur(10px);
}
.topbar-inner{
  height:42px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:10px;font-size:12px;font-weight:600;
  color:var(--aurora);background:rgba(75,224,168,.12);border:1px solid rgba(75,224,168,.35);
  white-space:nowrap;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--aurora);display:inline-block;box-shadow:0 0 8px var(--aurora);}
.countdown{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.countdown b{color:var(--sunset);font-weight:600;margin-left:6px;}
.topbar-close{
  width:26px;height:26px;border-radius:8px;color:var(--muted);font-size:18px;line-height:1;
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  transition:background .2s ease,color .2s ease;
}
.topbar-close:hover{background:rgba(53,191,240,.14);color:var(--text);}

.nav{
  background:rgba(7,19,28,.78);
  border-bottom:1px solid var(--border);
  backdrop-filter:blur(14px);
  transition:background .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.site-header.scrolled .nav{background:rgba(7,19,28,.94);box-shadow:0 12px 34px -22px rgba(0,0,0,.95);}
.nav-inner{height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:19px;color:#04141E;
  background:linear-gradient(140deg,var(--sky),var(--aurora));
  box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-size:17px;font-weight:800;letter-spacing:.3px;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:2.4px;}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;}
.nav-links a{
  position:relative;display:inline-block;padding:8px 14px;border-radius:10px;
  font-size:15px;color:#CFE4F0;transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--sky),var(--aurora));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:#fff;background:rgba(53,191,240,.08);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:#fff;background:rgba(53,191,240,.12);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--border);
  color:var(--text);font-size:18px;align-items:center;justify-content:center;
}
.mobile-drawer{
  display:none;flex-direction:column;gap:6px;padding:14px 24px 22px;
  border-top:1px solid var(--border);background:rgba(10,25,38,.98);
}
.mobile-drawer a{padding:12px 14px;border-radius:12px;color:#CFE4F0;font-size:15px;}
.mobile-drawer a.active{background:rgba(53,191,240,.12);color:#fff;}
.mobile-drawer.open{display:flex;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:12px;font-size:15px;font-weight:600;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--sky),var(--sky-deep));
  color:#04141E;box-shadow:var(--glow);
}
.btn-primary:hover{background:linear-gradient(135deg,#4FCBF7,#2199CF);transform:translateY(-1px);box-shadow:0 0 30px rgba(53,191,240,.45);color:#04141E;}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 16px rgba(53,191,240,.3);}
.btn-ghost{
  border:1px solid var(--border-strong);color:var(--text);background:rgba(53,191,240,.05);
}
.btn-ghost:hover{border-color:var(--sky);color:#fff;background:rgba(53,191,240,.12);transform:translateY(-1px);}
.btn-cta .cta-dot{width:8px;height:8px;border-radius:50%;background:#04141E;opacity:.7;}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;}

.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  font-size:12.5px;color:#BFDCEA;background:rgba(53,191,240,.08);border:1px solid var(--border);
}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:96px 0 84px;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg, rgba(7,19,28,.82), rgba(7,19,28,.94)), url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.9;
}
.page-hero::after{
  content:"";position:absolute;left:50%;top:-220px;width:900px;height:460px;transform:translateX(-50%);
  background:radial-gradient(closest-side, rgba(53,191,240,.32), rgba(53,191,240,0) 72%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--sky);
  letter-spacing:1.5px;text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:28px;height:1px;background:linear-gradient(90deg,var(--sky),transparent);}
.page-hero h1{font-size:46px;line-height:1.22;margin-bottom:18px;}
.page-hero h1 em{font-style:normal;color:var(--sky);}
.hero-sub{font-size:17px;color:#C4DBE8;max-width:640px;margin-bottom:22px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

.hero-panel{
  border-radius:var(--radius);border:1px solid var(--border);
  background:linear-gradient(160deg, rgba(16,42,59,.86), rgba(10,25,38,.72));
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  padding:26px 24px;
}
.hero-panel h2{font-size:16px;color:#CFE4F0;margin-bottom:16px;font-weight:600;}
.status-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(53,191,240,.16);font-size:14px;}
.status-row:last-of-type{border-bottom:none;}
.status-row span:first-child{color:var(--muted);}
.status-row strong{font-weight:600;color:var(--text);}
.status-ok{color:var(--aurora)!important;}
.status-warn{color:var(--sunset)!important;}
.panel-foot{margin-top:14px;padding-top:14px;border-top:1px solid var(--border);font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:10px;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:720px;margin-bottom:46px;}
.section-head h2{font-size:34px;margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}
.section-head .eyebrow{margin-bottom:14px;}

/* ---------- big + small card grid ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.card{
  position:relative;border-radius:var(--radius);border:1px solid var(--border);
  background:var(--panel);box-shadow:var(--shadow);overflow:hidden;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--border-strong);}
.card-lg{grid-column:1 / -1;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);}
.card-lg .card-media{position:relative;min-height:320px;overflow:hidden;}
.card-lg .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card-lg:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg, rgba(7,19,28,.62), rgba(7,19,28,.12));
}
.card-lg .card-body{padding:38px 36px;}
.card-sm{padding:32px 28px;}
.card-index{
  font-family:var(--mono);font-size:13px;color:var(--sunset);letter-spacing:2px;margin-bottom:14px;display:block;
}
.card h3{font-size:21px;margin-bottom:12px;}
.card p{color:var(--muted);font-size:15px;}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;color:var(--sky);font-weight:600;}
.card-link i{transition:transform .2s ease;}
.card:hover .card-link i{transform:translateX(4px);}
.icon-slot{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--border-strong);background:rgba(53,191,240,.09);color:var(--sky);font-size:19px;margin-bottom:18px;
}

/* ---------- steps ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.steps::before{
  content:"";position:absolute;top:22px;left:6%;right:6%;height:1px;
  background:linear-gradient(90deg, rgba(53,191,240,0), rgba(53,191,240,.55), rgba(75,224,168,.5), rgba(53,191,240,0));
}
.step{position:relative;padding-top:0;}
.step-dot{
  width:45px;height:45px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:700;color:#04141E;
  background:linear-gradient(140deg,var(--sky),var(--aurora));box-shadow:var(--glow);
  position:relative;z-index:2;margin-bottom:20px;
}
.step h3{font-size:19px;margin-bottom:10px;}
.step p{color:var(--muted);font-size:15px;}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center;}
.split-media{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);}
.split-media img{width:100%;height:100%;object-fit:cover;min-height:340px;}
.split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg, rgba(7,19,28,.15), rgba(7,19,28,.7));}
.split-media figcaption{position:absolute;left:20px;bottom:18px;z-index:2;font-size:13px;color:#CFE4F0;}
.split h2{font-size:32px;margin-bottom:16px;}
.split > div > p{color:#BFD8E6;margin-bottom:22px;}
.check-list{display:flex;flex-direction:column;gap:16px;}
.check-list li{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--panel);}
.check-list i{color:var(--aurora);margin-top:5px;font-size:15px;}
.check-list strong{display:block;font-size:16px;margin-bottom:4px;}
.check-list span{color:var(--muted);font-size:14.5px;}

/* ---------- faq ---------- */
.faq{max-width:900px;margin:0 auto;}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--panel);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,background .2s ease;}
.faq-item:hover{border-color:var(--border-strong);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:16px 22px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--border-strong);
  display:flex;align-items:center;justify-content:center;color:var(--sky);font-size:15px;
  transition:transform .25s ease, background .25s ease;
}
.faq-item.open .sign{transform:rotate(45deg);background:rgba(53,191,240,.14);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a p{padding:0 22px 20px;color:var(--muted);font-size:15px;line-height:1.9;}
.faq-item.open .faq-a{max-height:340px;}

/* ---------- cta band ---------- */
.cta-band{position:relative;padding:0 0 96px;}
.cta-inner{
  position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--border-strong);
  background:
    radial-gradient(600px 200px at 12% 0%, rgba(53,191,240,.28), rgba(53,191,240,0) 70%),
    linear-gradient(140deg,#0E2333,#0A1926);
  padding:54px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow);
}
.cta-inner h2{font-size:30px;margin-bottom:12px;}
.cta-inner p{color:#BFD8E6;max-width:620px;}

/* ---------- footer ---------- */
.footer{
  background:linear-gradient(180deg, rgba(10,25,38,1), rgba(7,19,28,1));
  border-top:1px solid var(--border);
  padding-top:64px;
  position:relative;
}
.footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(53,191,240,.6), rgba(75,224,168,.5), transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand-text{margin-bottom:16px;}
.footer-brand p{color:var(--muted);font-size:14.5px;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:#DCEBF4;letter-spacing:.6px;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:var(--muted);font-size:14.5px;display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:var(--sky);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--border);padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  color:var(--muted);font-size:13.5px;flex-wrap:wrap;
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .page-hero{padding:72px 0 64px;}
  .page-hero h1{font-size:36px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .section{padding:72px 0;}
  .section-head h2{font-size:28px;}
  .entry-grid{grid-template-columns:1fr;}
  .card-lg{grid-template-columns:1fr;}
  .card-lg .card-media{min-height:240px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .steps::before{display:none;}
  .split{grid-template-columns:1fr;gap:34px;}
  .split h2{font-size:26px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  .container{padding:0 18px;}
  .nav-inner{height:64px;}
  .brand-main{font-size:15px;}
  .brand-sub{font-size:10px;letter-spacing:1.6px;}
  .nav-right .btn-cta{display:none;}
  .topbar-inner{height:40px;font-size:12px;}
  .countdown{font-size:11.5px;}
  .page-hero{padding:56px 0 52px;}
  .page-hero h1{font-size:29px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .section{padding:56px 0;}
  .section-head h2{font-size:23px;}
  .card-lg .card-body,.card-sm{padding:26px 22px;}
  .card h3{font-size:18.5px;}
  .steps{grid-template-columns:1fr;}
  .split-media img{min-height:220px;}
  .faq-q{font-size:15.5px;padding:14px 18px;min-height:56px;}
  .faq-a p{padding:0 18px 18px;}
  .cta-inner{padding:34px 22px;border-radius:18px;}
  .cta-inner h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;font-size:12.5px;}
}

/* roulang page: category2 */
:root{
  --bg:#07131C;
  --bg-alt:#0A1926;
  --panel:#0E2130;
  --panel-2:#102A3C;
  --line:rgba(53,191,240,.14);
  --line-strong:rgba(53,191,240,.34);
  --text:#E6F1F8;
  --muted:#8FA9BC;
  --muted-2:#6E8798;
  --brand:#35BFF0;
  --brand-deep:#1C8FC4;
  --aurora:#4BE0A8;
  --ember:#FF9147;
  --radius:18px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow:0 24px 60px -30px rgba(0,0,0,.7);
  --shadow-hover:0 32px 70px -30px rgba(0,0,0,.78);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
.mono{font-family:'SFMono-Regular',Consolas,Menlo,monospace;font-variant-numeric:tabular-nums;letter-spacing:.02em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- 顶部活动条 ---------- */
.site-header{position:sticky;top:0;z-index:80}
.topbar{
  background:#08161F;
  border-bottom:1px solid var(--line);
  font-size:13px;
  transition:opacity .25s ease, transform .25s ease;
}
.topbar.hide{display:none}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:42px}
.topbar-left{display:flex;align-items:center;gap:14px;flex-wrap:nowrap;overflow:hidden}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:10px;
  background:rgba(75,224,168,.12);
  border:1px solid rgba(75,224,168,.38);
  color:var(--aurora);font-size:12px;white-space:nowrap;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--aurora);display:inline-block;box-shadow:0 0 8px rgba(75,224,168,.9)}
.countdown{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.countdown b{color:var(--ember);font-weight:600;margin-left:6px}
.topbar-close{
  width:26px;height:26px;line-height:1;border-radius:8px;color:var(--muted);
  font-size:18px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid transparent;transition:.2s;
}
.topbar-close:hover{color:var(--text);border-color:var(--line-strong);background:rgba(53,191,240,.08)}

/* ---------- 导航 ---------- */
.nav{
  background:rgba(7,19,28,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled .nav{background:rgba(5,15,22,.96);box-shadow:0 18px 40px -30px rgba(0,0,0,.9)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:70px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,var(--brand),#1E7FB0);
  color:#04131C;font-weight:800;font-size:20px;
  box-shadow:0 0 24px rgba(53,191,240,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-main{font-size:17px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.28em}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;display:inline-block;padding:8px 14px;border-radius:10px;
  font-size:15px;color:#CFE2EE;transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:'';position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),rgba(53,191,240,0));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:#fff;background:rgba(53,191,240,.07)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:#fff;background:rgba(53,191,240,.10)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);font-size:18px;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{background:rgba(53,191,240,.10)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand);color:#04131C;
  box-shadow:0 0 24px rgba(53,191,240,.35);
}
.btn-primary:hover{background:#4CC8F5;transform:translateY(-1px);box-shadow:0 0 30px rgba(53,191,240,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 16px rgba(53,191,240,.28)}
.btn-ghost{
  background:transparent;color:var(--text);border:1px solid var(--line-strong);
}
.btn-ghost:hover{border-color:var(--brand);color:#fff;background:rgba(53,191,240,.08);transform:translateY(-1px)}
.btn-cta{height:44px;padding:0 20px}
.cta-dot{width:7px;height:7px;border-radius:50%;background:#04131C;opacity:.6;box-shadow:0 0 8px rgba(4,19,28,.5)}

.mobile-drawer{
  display:none;flex-direction:column;gap:4px;
  padding:0 24px;max-height:0;overflow:hidden;
  border-top:0 solid var(--line);
  transition:max-height .3s ease, padding .3s ease;
}
.mobile-drawer.open{max-height:420px;padding:14px 24px 22px;border-top:1px solid var(--line)}
.mobile-drawer a{padding:12px 14px;border-radius:10px;color:#CFE2EE;font-size:15px}
.mobile-drawer a:hover{background:rgba(53,191,240,.10);color:#fff}
.mobile-drawer a.active{background:rgba(53,191,240,.14);color:#fff}
.mobile-drawer .btn{margin-top:10px;color:#04131C;justify-content:center}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:92px 0 72px;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,19,28,.80) 0%,rgba(7,19,28,.93) 62%,var(--bg) 100%);
}
.page-hero::after{
  content:'';position:absolute;top:-160px;left:50%;transform:translateX(-50%);
  width:900px;height:520px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(53,191,240,.28),rgba(53,191,240,0));
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--muted-2)}
.crumb .current{color:#B9D3E2}
.hero-tagline{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;
  background:rgba(53,191,240,.10);border:1px solid var(--line-strong);color:#9FD8F2;
  margin-bottom:20px;
}
.hero-tagline .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px rgba(53,191,240,.9)}
h1{
  font-size:clamp(30px,4.6vw,48px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:900px;
}
.hero-sub{
  margin-top:18px;max-width:760px;
  font-size:16.5px;color:#B9D3E2;line-height:1.85;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-block;padding:5px 12px;border-radius:var(--radius-xs);
  font-size:12.5px;color:#9FD8F2;
  background:rgba(53,191,240,.08);border:1px solid var(--line);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:52px}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;font-weight:700;letter-spacing:-.01em;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.85}
.eyebrow{
  display:inline-block;margin-bottom:14px;
  font-size:12px;letter-spacing:.24em;color:var(--brand);text-transform:uppercase;
}

/* ---------- 左窄右宽双栏 ---------- */
.split{display:grid;grid-template-columns:290px minmax(0,1fr);gap:48px;align-items:start}
.toc{
  position:sticky;top:112px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px 20px;
  box-shadow:var(--shadow);
}
.toc h3{font-size:15px;font-weight:700;margin-bottom:6px}
.toc .toc-note{font-size:12.5px;color:var(--muted-2);margin-bottom:16px;line-height:1.7}
.toc-list li + li{margin-top:4px}
.toc-list a{
  display:flex;align-items:flex-start;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14px;color:#B9D3E2;
  border:1px solid transparent;transition:.2s;
}
.toc-list a:hover{background:rgba(53,191,240,.08);border-color:var(--line);color:#fff}
.toc-list .num{
  font-family:'SFMono-Regular',Consolas,Menlo,monospace;
  font-size:12px;color:var(--ember);flex-shrink:0;padding-top:2px;
}
.toc-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted-2);line-height:1.8}

.step-block{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px 30px;
  box-shadow:var(--shadow);
  transition:border-color .22s ease, transform .22s ease;
}
.step-block + .step-block{margin-top:24px}
.step-block:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.step-head{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.step-num{
  font-family:'SFMono-Regular',Consolas,Menlo,monospace;
  font-size:13px;font-weight:700;color:var(--ember);
  border:1px solid rgba(255,145,71,.4);background:rgba(255,145,71,.10);
  border-radius:8px;padding:3px 9px;flex-shrink:0;
}
.step-block h3{font-size:20px;font-weight:700;line-height:1.4}
.step-block > p{color:var(--muted);font-size:15px;line-height:1.85}
.check-list{margin-top:18px}
.check-list li{
  position:relative;padding-left:24px;font-size:14.5px;color:#C6DBE8;line-height:1.85;
}
.check-list li + li{margin-top:8px}
.check-list li::before{
  content:'';position:absolute;left:0;top:10px;
  width:8px;height:8px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(53,191,240,.6);
}
.step-meta{
  margin-top:20px;display:flex;flex-wrap:wrap;gap:10px;
}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat{
  padding:36px 24px;
  border-left:1px solid var(--line);
}
.stat:first-child{border-left:0}
.stat .value{
  font-family:'SFMono-Regular',Consolas,Menlo,monospace;
  font-size:clamp(30px,4vw,44px);font-weight:700;color:#fff;line-height:1.1;
}
.stat .value span{font-size:.45em;color:var(--brand);margin-left:4px;font-weight:600}
.stat .label{margin-top:10px;font-size:13.5px;color:var(--muted);letter-spacing:.02em}
.stat .label em{font-style:normal;color:var(--aurora)}

/* ---------- 图片 + 文字 ---------- */
.media-split{display:grid;grid-template-columns:1.02fr 1fr;gap:52px;align-items:center}
.media-figure{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.media-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.media-figure::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(7,19,28,.05),rgba(7,19,28,.72));
}
.media-figure .cap{
  position:absolute;left:20px;bottom:18px;z-index:2;
  font-size:12.5px;color:#CFE2EE;letter-spacing:.04em;
}
.media-copy h2{font-size:clamp(23px,2.8vw,32px);line-height:1.32;font-weight:700}
.media-copy p{margin-top:16px;color:var(--muted);font-size:15.5px;line-height:1.88}
.point-list{margin-top:22px}
.point-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;border-radius:var(--radius-sm);
  background:rgba(53,191,240,.05);border:1px solid var(--line);
}
.point-list li + li{margin-top:10px}
.point-list .ico{
  width:26px;height:26px;flex-shrink:0;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(53,191,240,.14);color:var(--brand);
  font-size:13px;font-family:'SFMono-Regular',Consolas,Menlo,monospace;font-weight:700;
}
.point-list strong{display:block;font-size:14.5px;color:#E6F1F8;font-weight:600}
.point-list small{display:block;font-size:13.5px;color:var(--muted);line-height:1.75;margin-top:2px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:22px;
  font-size:14.5px;color:var(--brand);font-weight:600;
}
.text-link:hover{color:#fff}
.text-link::after{content:'→';transition:transform .2s ease}
.text-link:hover::after{transform:translateX(4px)}

/* ---------- 风险卡片 ---------- */
.risk-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px 26px;
  box-shadow:var(--shadow);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover),0 0 0 1px rgba(53,191,240,.18) inset}
.card .card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.card .card-idx{
  font-family:'SFMono-Regular',Consolas,Menlo,monospace;
  font-size:13px;color:var(--ember);font-weight:700;
}
.card h3{font-size:19px;font-weight:700;line-height:1.42}
.card p{margin-top:12px;font-size:14.5px;color:var(--muted);line-height:1.85}
.card .card-foot{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted-2)}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:10px;font-size:12px;
  background:rgba(53,191,240,.10);border:1px solid var(--line-strong);color:#9FD8F2;
}
.chip.warn{background:rgba(255,145,71,.10);border-color:rgba(255,145,71,.38);color:#FFBE8C}
.chip.ok{background:rgba(75,224,168,.10);border-color:rgba(75,224,168,.36);color:var(--aurora)}

/* ---------- FAQ ---------- */
.faq{max-width:920px;margin:0 auto}
.faq-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  overflow:hidden;
  transition:border-color .2s ease, background .2s ease;
}
.faq-item + .faq-item{margin-top:14px}
.faq-item.open{border-color:var(--line-strong);background:var(--panel-2)}
.faq-q{
  width:100%;min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:16px 24px;text-align:left;font-size:16px;font-weight:600;color:#E6F1F8;
}
.faq-q:hover{color:#fff}
.faq-sign{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--brand);font-size:16px;line-height:1;
  transition:transform .28s ease, background .2s ease;
}
.faq-item.open .faq-sign{transform:rotate(45deg);background:rgba(53,191,240,.12)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a p{
  padding:0 24px 22px;font-size:14.5px;color:var(--muted);line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line-strong);
  border-radius:24px;
  background:linear-gradient(135deg,#0C2434 0%,#0A1B28 58%,#0E2A3C 100%);
  padding:56px 52px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:'';position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(closest-side,rgba(53,191,240,.26),rgba(53,191,240,0));
}
.cta-copy{position:relative;z-index:2;max-width:640px}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35}
.cta-copy p{margin-top:14px;color:#B9D3E2;font-size:15px;line-height:1.85}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:96px;
  background:#06121A;
  border-top:1px solid var(--line);
  position:relative;
}
.footer::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,rgba(53,191,240,0),rgba(53,191,240,.85),rgba(75,224,168,.6),rgba(53,191,240,0));
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand .brand-text{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:#E6F1F8;letter-spacing:.04em}
.footer-links li + li{margin-top:10px}
.footer-links a{font-size:14px;color:var(--muted);display:inline-block;transition:color .2s ease, transform .2s ease}
.footer-links a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted-2);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-drawer{display:flex}
  .split{grid-template-columns:1fr;gap:28px}
  .toc{position:static}
  .media-split{grid-template-columns:1fr;gap:32px}
  .risk-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{padding:28px 20px;border-top:1px solid var(--line)}
  .stat:nth-child(1),.stat:nth-child(2){border-top:0}
  .stat:nth-child(odd){border-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px}
  .section{padding:72px 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px 32px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .topbar-inner{min-height:44px}
  .countdown{font-size:12px}
  .brand-main{font-size:15.5px}
  .brand-sub{font-size:10px;letter-spacing:.2em}
  .brand-mark{width:36px;height:36px;font-size:18px;border-radius:10px}
  .page-hero{padding:64px 0 52px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .section{padding:56px 0}
  .section-head{margin-bottom:34px}
  .step-block{padding:24px 20px}
  .risk-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stat .label{font-size:12.5px}
  .faq-q{font-size:15px;padding:14px 18px}
  .faq-a p{padding:0 18px 18px}
  .cta-band{padding:34px 22px;border-radius:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .mobile-drawer .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --sky:#35BFF0;
  --sky-deep:#1C8FC4;
  --aurora:#4BE0A8;
  --amber:#FF9147;
  --bg:#07131C;
  --bg-alt:#0A1926;
  --panel:#0E2130;
  --panel-2:#12293A;
  --text:#E9F5FB;
  --muted:#8FA9B8;
  --muted-2:#6C8798;
  --line:rgba(53,191,240,.12);
  --line-strong:rgba(53,191,240,.28);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 60px -30px rgba(0,0,0,.7);
  --shadow-hover:0 32px 68px -30px rgba(0,0,0,.8);
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    radial-gradient(1100px 520px at 50% -180px, rgba(18,58,82,.85), rgba(7,19,28,0) 72%),
    radial-gradient(800px 400px at 88% 12%, rgba(53,191,240,.10), rgba(7,19,28,0) 70%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible{
  outline:2px solid var(--sky);
  outline-offset:2px;
  border-radius:8px;
}

/* ============ 顶部活动条 ============ */
.topbar{
  position:relative;
  z-index:60;
  height:44px;
  background:linear-gradient(90deg, rgba(18,58,82,.92), rgba(9,26,38,.92));
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  height:44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.topbar-left{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}
.countdown{
  font-size:13px;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.countdown b{
  color:var(--amber);
  font-weight:600;
  margin-left:4px;
}
.topbar-close{
  flex:0 0 auto;
  width:28px;
  height:28px;
  border-radius:8px;
  display:grid;
  place-items:center;
  font-size:18px;
  line-height:1;
  color:var(--muted);
  transition:background .2s,color .2s;
}
.topbar-close:hover{background:rgba(53,191,240,.12);color:var(--text);}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:10px;
  font-size:12px;
  line-height:1.4;
  white-space:nowrap;
  color:var(--sky);
  background:rgba(53,191,240,.12);
  border:1px solid rgba(53,191,240,.30);
}
.badge .dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--aurora);
  box-shadow:0 0 8px var(--aurora);
}
.badge-amber{
  color:var(--amber);
  background:rgba(255,145,71,.12);
  border-color:rgba(255,145,71,.35);
}
.badge-amber .dot{background:var(--amber);box-shadow:0 0 8px var(--amber);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
}
.nav{
  background:rgba(7,19,28,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled .nav{
  background:rgba(6,16,24,.95);
  border-bottom-color:var(--line);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.9);
}
.nav-inner{
  height:70px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.brand-mark{
  width:40px;
  height:40px;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-size:18px;
  font-weight:700;
  color:#04121B;
  background:linear-gradient(135deg,var(--sky),var(--aurora));
  box-shadow:0 0 22px rgba(53,191,240,.35);
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.2;
}
.brand-main{
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
}
.brand-sub{
  font-size:11px;
  color:var(--muted-2);
  letter-spacing:.18em;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  border-radius:10px;
  font-size:15px;
  color:rgba(233,245,251,.78);
  transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:6px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--sky),var(--aurora));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  color:var(--text);
  font-size:18px;
  place-items:center;
  transition:background .2s,border-color .2s;
}
.nav-toggle:hover{background:rgba(53,191,240,.1);border-color:var(--sky);}
.mobile-drawer{
  display:none;
  flex-direction:column;
  gap:4px;
  padding:10px 24px 20px;
  background:rgba(6,16,24,.98);
  border-bottom:1px solid var(--line);
}
.mobile-drawer.open{display:flex;}
.mobile-drawer a{
  padding:12px 14px;
  border-radius:10px;
  font-size:15px;
  color:rgba(233,245,251,.82);
  transition:background .2s,color .2s;
}
.mobile-drawer a:hover,
.mobile-drawer a.active{background:rgba(53,191,240,.1);color:#fff;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .25s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  background:var(--sky);
  color:#04121B;
  box-shadow:0 0 24px rgba(53,191,240,.35);
}
.btn-primary:hover{
  background:#4CC9F4;
  transform:translateY(-1px);
  box-shadow:0 0 30px rgba(53,191,240,.5);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 16px rgba(53,191,240,.3);
}
.btn-ghost{
  border:1px solid var(--line-strong);
  color:var(--text);
  background:rgba(53,191,240,.04);
}
.btn-ghost:hover{
  border-color:var(--sky);
  color:#fff;
  background:rgba(53,191,240,.10);
}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-cta{height:40px;padding:0 18px;font-size:14px;}
.cta-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:#04121B;
  box-shadow:0 0 0 3px rgba(4,18,27,.25);
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--sky);
  transition:color .2s,transform .2s;
}
.text-link:hover{color:#7AD8FA;transform:translateX(2px);}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:72px 0 76px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  opacity:.32;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(760px 320px at 20% 0%, rgba(53,191,240,.30), transparent 70%),
    linear-gradient(180deg, rgba(7,19,28,.70) 0%, rgba(7,19,28,.92) 60%, var(--bg) 100%);
}
.page-hero .container{position:relative;z-index:2;}

.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted-2);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--muted);transition:color .2s;}
.breadcrumb a:hover{color:var(--sky);}
.breadcrumb .sep{color:rgba(143,169,184,.45);}
.breadcrumb .current{color:var(--text);}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:48px;
  align-items:center;
}
.hero-copy h1{
  margin-top:18px;
  font-size:48px;
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.01em;
}
.hero-sub{
  margin-top:18px;
  max-width:560px;
  font-size:17px;
  line-height:1.8;
  color:var(--muted);
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:20px;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:10px;
  font-size:12px;
  color:rgba(233,245,251,.86);
  background:rgba(53,191,240,.08);
  border:1px solid var(--line);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}

.hero-panel{
  padding:26px 26px 22px;
  border-radius:var(--radius);
  border:1px solid var(--line-strong);
  background:rgba(14,33,48,.6);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.panel-title{
  font-size:15px;
  font-weight:700;
  color:#fff;
  letter-spacing:.04em;
  padding-bottom:14px;
  margin-bottom:6px;
  border-bottom:1px solid var(--line);
}
.panel-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
  font-size:14px;
  color:var(--muted);
  border-bottom:1px dashed rgba(53,191,240,.10);
}
.panel-row:last-of-type{border-bottom:0;}
.panel-row b{
  font-size:15px;
  font-weight:600;
  color:var(--text);
}
.panel-row b.ok{color:var(--aurora);}
.panel-foot{
  margin-top:10px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--muted-2);
}

/* ============ 通用区块 ============ */
.section{
  padding:96px 0;
  position:relative;
}
.section-alt{
  background:var(--bg-alt);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{
  max-width:720px;
  margin-bottom:48px;
}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--sky);
  margin-bottom:14px;
}
.section-head h2{
  font-size:34px;
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.01em;
}
.section-sub{
  margin-top:14px;
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
}

/* ============ 编号纵列（异常速判） ============ */
.timeline{
  position:relative;
  display:grid;
  gap:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:31px;
  top:14px;
  bottom:14px;
  width:1px;
  background:linear-gradient(180deg, rgba(53,191,240,.6), rgba(53,191,240,.05));
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:24px;
  align-items:start;
  padding:20px 24px 20px 0;
  border-radius:var(--radius);
  transition:background .25s ease;
}
.tl-item:hover{background:rgba(53,191,240,.04);}
.tl-num{
  position:relative;
  z-index:2;
  width:64px;
  height:64px;
  display:grid;
  place-items:center;
  border-radius:16px;
  font-size:20px;
  font-weight:700;
  color:var(--amber);
  background:rgba(255,145,71,.10);
  border:1px solid rgba(255,145,71,.32);
}
.tl-body h3{
  font-size:22px;
  font-weight:700;
  line-height:1.4;
  margin-bottom:8px;
}
.tl-body p{
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:760px;
}
.tl-hint{
  display:inline-block;
  margin-top:12px;
  padding:6px 12px;
  border-radius:10px;
  font-size:13px;
  color:var(--sky);
  background:rgba(53,191,240,.08);
  border:1px solid var(--line);
}

/* ============ 双栏图文 ============ */
.split{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:56px;
  align-items:center;
}
.split-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.split-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(7,19,28,.10), rgba(7,19,28,.72));
}
.media-badge{
  position:absolute;
  left:18px;
  bottom:18px;
  z-index:2;
  padding:6px 14px;
  border-radius:10px;
  font-size:13px;
  font-weight:600;
  color:#04121B;
  background:linear-gradient(135deg,var(--sky),var(--aurora));
}
.split-body h2{
  font-size:34px;
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.01em;
}
.split-body > p{
  margin-top:16px;
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
}
.step-list{
  margin-top:26px;
  display:grid;
  gap:14px;
}
.step-list li{
  display:grid;
  grid-template-columns:28px minmax(0,1fr);
  gap:12px;
  align-items:start;
  font-size:15px;
  line-height:1.8;
  color:rgba(233,245,251,.9);
}
.step-list .idx{
  width:28px;
  height:28px;
  display:grid;
  place-items:center;
  border-radius:9px;
  font-size:13px;
  font-family:var(--font-mono);
  color:var(--sky);
  background:rgba(53,191,240,.10);
  border:1px solid var(--line-strong);
}
.split-body .text-link{margin-top:26px;}

/* ============ 对照表 ============ */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  background:rgba(14,33,48,.45);
}
.signal-table th,
.signal-table td{
  padding:18px 22px;
  text-align:left;
  font-size:15px;
  line-height:1.7;
  vertical-align:top;
  border-bottom:1px solid var(--line);
}
.signal-table th{
  font-size:13px;
  letter-spacing:.08em;
  font-weight:600;
  color:var(--muted);
  background:rgba(53,191,240,.05);
  white-space:nowrap;
}
.signal-table tbody tr:last-child td{border-bottom:0;}
.signal-table tbody tr{transition:background .2s;}
.signal-table tbody tr:hover{background:rgba(53,191,240,.05);}
.signal-table td:first-child{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--amber);
  white-space:nowrap;
}
.signal-table td:last-child{color:var(--muted);}

/* ============ 数据条 ============ */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat{
  padding:32px 24px;
  text-align:left;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:0;}
.stat b{
  display:block;
  font-size:44px;
  line-height:1.1;
  font-weight:700;
  color:var(--sky);
  letter-spacing:-.02em;
}
.stat b .unit{
  font-size:16px;
  color:var(--muted);
  margin-left:4px;
  font-weight:500;
}
.stat span{
  display:block;
  margin-top:10px;
  font-size:13px;
  color:var(--muted);
}

/* ============ 清单 + 提示卡 ============ */
.check-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);
  gap:40px;
  align-items:start;
}
.todo-list{
  display:grid;
  gap:12px;
}
.todo-list li{
  display:grid;
  grid-template-columns:24px minmax(0,1fr);
  gap:14px;
  align-items:start;
  padding:16px 20px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(14,33,48,.45);
  font-size:15px;
  line-height:1.75;
  color:rgba(233,245,251,.9);
  transition:border-color .2s,transform .2s,box-shadow .2s;
}
.todo-list li:hover{
  border-color:var(--line-strong);
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
}
.todo-list .box{
  width:24px;
  height:24px;
  border-radius:8px;
  display:grid;
  place-items:center;
  font-size:12px;
  color:var(--aurora);
  background:rgba(75,224,168,.10);
  border:1px solid rgba(75,224,168,.35);
}
.note-card{
  padding:28px 24px;
  border-radius:var(--radius);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg, rgba(18,58,82,.55), rgba(10,25,38,.85));
  box-shadow:var(--shadow);
}
.note-card h3{
  font-size:19px;
  font-weight:700;
  margin-bottom:16px;
}
.note-card ul{display:grid;gap:12px;}
.note-card li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
}
.note-card li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--sky);
}
.note-card .note-foot{
  margin-top:22px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted-2);
}

/* ============ FAQ ============ */
.faq-list{
  display:grid;
  gap:12px;
  max-width:900px;
}
.faq-item{
  border-radius:16px;
  border:1px solid var(--line);
  background:rgba(14,33,48,.5);
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item.open{
  border-color:var(--line-strong);
  background:rgba(18,41,58,.72);
}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:16px 22px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .2s;
}
.faq-q:hover{color:var(--sky);}
.faq-icon{
  flex:0 0 auto;
  width:26px;
  height:26px;
  display:grid;
  place-items:center;
  border-radius:8px;
  font-size:16px;
  line-height:1;
  color:var(--sky);
  background:rgba(53,191,240,.10);
  border:1px solid var(--line-strong);
  transition:transform .3s ease,background .3s ease;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  background:rgba(53,191,240,.22);
}
.faq-a{
  max-height:0;
  opacity:0;
  overflow:hidden;
  transition:max-height .35s ease,opacity .3s ease,padding .3s ease;
  padding:0 22px;
}
.faq-item.open .faq-a{
  max-height:340px;
  opacity:1;
  padding:0 22px 20px;
}
.faq-a p{
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  border-top:1px dashed rgba(53,191,240,.16);
  padding-top:16px;
}

/* ============ 底部 CTA ============ */
.cta-section{padding:88px 0;}
.cta-band{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  padding:40px 44px;
  border-radius:22px;
  border:1px solid var(--line-strong);
  background:linear-gradient(120deg, rgba(18,58,82,.75), rgba(10,25,38,.92) 62%);
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(460px 220px at 10% 0%, rgba(53,191,240,.28), transparent 70%);
  pointer-events:none;
}
.cta-band h2{
  position:relative;
  font-size:30px;
  font-weight:800;
  line-height:1.35;
  letter-spacing:-.01em;
}
.cta-band p{
  position:relative;
  margin-top:12px;
  max-width:620px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}
.cta-band .btn{position:relative;flex:0 0 auto;}

/* ============ 页脚 ============ */
.footer{
  position:relative;
  padding:72px 0 28px;
  background:var(--bg-alt);
  border-top:1px solid var(--line);
}
.footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, var(--sky), var(--aurora), transparent);
  opacity:.45;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .brand-text{margin-bottom:16px;}
.footer-brand p{
  max-width:340px;
  font-size:14px;
  line-height:1.85;
  color:var(--muted);
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  letter-spacing:.08em;
  color:#fff;
  margin-bottom:16px;
}
.footer-links li + li{margin-top:10px;}
.footer-links a{
  display:inline-block;
  font-size:14px;
  color:var(--muted);
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:var(--sky);transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--muted-2);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:grid;}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .hero-copy h1{font-size:36px;}
  .split{grid-template-columns:minmax(0,1fr);gap:36px;}
  .check-grid{grid-template-columns:minmax(0,1fr);}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat{padding:26px 20px;}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),
  .stat:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}

@media (max-width:639px){
  .container{padding:0 18px;}
  .countdown{font-size:12px;}
  .brand-sub{display:none;}
  .brand-main{font-size:16px;}
  .nav-cta-text{display:none;}
  .btn-cta{padding:0 14px;}
  .page-hero{padding:48px 0 56px;}
  .hero-copy h1{font-size:30px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2,
  .split-body h2{font-size:26px;}
  .tl-item{grid-template-columns:52px minmax(0,1fr);gap:16px;padding:16px 0;}
  .timeline::before{left:25px;}
  .tl-num{width:52px;height:52px;font-size:17px;border-radius:14px;}
  .tl-body h3{font-size:19px;}
  .signal-table th,
  .signal-table td{padding:14px 16px;font-size:14px;white-space:normal;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat b{font-size:34px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;gap:24px;}
  .cta-band h2{font-size:24px;}
  .cta-band .btn{width:100%;}
  .faq-q{font-size:15px;padding:14px 18px;}
  .faq-a{padding:0 18px;}
  .faq-item.open .faq-a{padding:0 18px 18px;}
  .footer{padding:56px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}