/* roulang page: index */
*,*::before,*::after{box-sizing:border-box}
:root{
  --bg-900:#070C14;
  --bg-800:#0C1420;
  --surface:#111C2B;
  --glass:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --brand-600:#1D5BFF;
  --brand-400:#4C8DFF;
  --accent-500:#00E3B0;
  --promo-500:#FF7A2F;
  --ink-100:#EAF1FF;
  --ink-300:#9FB0C9;
  --ink-500:#6B7C94;
  --radius-xs:10px;
  --radius-sm:12px;
  --radius-md:16px;
  --radius-lg:22px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-glow:0 0 0 1px rgba(0,227,176,.25),0 10px 30px -8px rgba(29,91,255,.55);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);

  /* Bootstrap 变量覆盖 */
  --bs-body-bg:var(--bg-900);
  --bs-body-color:var(--ink-100);
  --bs-primary:#1D5BFF;
  --bs-border-color:var(--line);
  --bs-link-color:#00E3B0;
  --bs-link-hover-color:#4C8DFF;
  --bs-font-sans-serif:var(--font-sans);
  --bs-body-font-family:var(--font-sans);
  --bs-card-bg:var(--surface);
  --bs-card-border-color:var(--line);
  --bs-card-color:var(--ink-100);
  --bs-heading-color:var(--ink-100);
  --bs-emphasis-color:var(--ink-100);
  --bs-secondary-color:var(--ink-300);
  --bs-body-line-height:1.85;
}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  background-color:var(--bg-900);
  color:var(--ink-100);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(760px 420px at 88% -6%, rgba(0,227,176,.12), transparent 68%),
    repeating-linear-gradient(115deg, rgba(255,255,255,.028) 0 1px, transparent 1px 64px);
  background-repeat:no-repeat,repeat;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--accent-500);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-400)}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--ink-100);font-weight:700;line-height:1.35;letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(0,227,176,.55);outline-offset:2px;border-radius:6px}
.container-xxl{max-width:1280px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:96px 0;position:relative}
.section--tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,36px);font-weight:700}
.section-head p{color:var(--ink-300);font-size:15px;margin-top:10px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;color:var(--accent-500);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--accent-500),transparent)}
.muted{color:var(--ink-300)}
.weak{color:var(--ink-500);font-size:13px}
.text-link{color:var(--accent-500);background-image:linear-gradient(90deg,var(--accent-500),var(--brand-400));background-size:0 2px;background-position:0 100%;background-repeat:no-repeat;transition:background-size .24s var(--ease),color .2s var(--ease);padding-bottom:2px}
.text-link:hover{background-size:100% 2px;color:var(--ink-100)}
.num{font-variant-numeric:tabular-nums}

/* 按钮 */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);border:1px solid transparent;
  font-weight:700;font-size:15px;padding:13px 26px;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-glow{
  background:linear-gradient(135deg,var(--brand-600),var(--accent-500));
  color:#05101F;box-shadow:var(--shadow-glow);
}
.btn-glow:hover{color:#05101F;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,227,176,.35),0 16px 38px -8px rgba(29,91,255,.7)}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(0,227,176,.25),0 6px 18px -8px rgba(29,91,255,.55)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--ink-100)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--brand-400);color:var(--ink-100);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn-glow[disabled],.btn-ghost[disabled]{opacity:.4;cursor:not-allowed;transform:none}

/* 顶部工具条 */
.topbar{background:var(--bg-800);border-bottom:1px solid var(--line);font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding:6px 24px;max-width:1280px;margin:0 auto}
.topbar-inner span{color:var(--ink-300)}
.topbar-links{display:flex;align-items:center;gap:18px}
.topbar-links a{color:var(--ink-100)}
.topbar-links a:hover{color:var(--accent-500)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:1030}
.site-nav{
  background:rgba(7,12,20,.72);backdrop-filter:blur(10px) saturate(140%);
  border-bottom:1px solid var(--line);transition:background-color .24s var(--ease),height .24s var(--ease);
}
.site-header.is-scrolled .site-nav{background:rgba(7,12,20,.88);backdrop-filter:blur(12px)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;transition:min-height .24s var(--ease)}
.site-header.is-scrolled .nav-inner{min-height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-100);font-weight:800;font-size:18px;letter-spacing:.02em}
.logo:hover{color:var(--ink-100)}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(29,91,255,.85),rgba(0,227,176,.85));
  color:#05101F;font-weight:800;font-size:16px;
  box-shadow:0 0 0 1px rgba(0,227,176,.3),0 8px 22px -12px rgba(29,91,255,.9);
}
.nav-collapse{display:flex;align-items:center;gap:28px;flex:1;justify-content:space-between}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:10px;color:var(--ink-300);font-size:15px;font-weight:600;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--ink-100);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--ink-100)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent-500));
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);color:var(--ink-100);align-items:center;justify-content:center;font-size:18px;
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);left:-16px;width:760px;
  background:rgba(255,255,255,.06);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;
  box-shadow:var(--shadow-card);display:grid;grid-template-columns:1fr 320px;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .16s var(--ease),transform .16s var(--ease),visibility .16s;
  z-index:1040;
}
.nav-item.has-mega:hover .mega-panel,.nav-item.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:13px;color:var(--ink-500);letter-spacing:.1em;margin-bottom:12px}
.mega-list li + li{border-top:1px solid var(--line)}
.mega-list a{display:flex;align-items:center;justify-content:space-between;padding:11px 4px;color:var(--ink-300);font-size:15px}
.mega-list a:hover{color:var(--ink-100)}
.mega-list a i{color:var(--accent-500);font-size:12px}
.mega-cards{display:grid;gap:12px}
.mega-card{
  display:flex;gap:12px;align-items:center;padding:12px;border-radius:var(--radius-md);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--ink-300);
}
.mega-card:hover{border-color:var(--brand-400);color:var(--ink-100)}
.mega-card img{width:64px;height:48px;border-radius:10px;object-fit:cover}
.mega-card b{display:block;color:var(--ink-100);font-size:14px;font-weight:700}
.mega-card small{font-size:12px;color:var(--ink-500)}

/* Hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(7,12,20,.94) 8%,rgba(7,12,20,.72) 46%,rgba(7,12,20,.6) 100%),
                   url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;z-index:0;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,227,176,.16),transparent 68%);z-index:0;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:88px 0 96px}
.hero-copy h1{font-size:clamp(30px,4.6vw,56px);font-weight:800;letter-spacing:-.02em;line-height:1.18}
.hero-copy h1 em{font-style:normal;background:linear-gradient(120deg,var(--accent-500),var(--brand-400));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:20px;font-size:17px;color:var(--ink-300);max-width:560px;line-height:1.9}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:26px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-100)}
.hero-points i{color:var(--accent-500);font-size:13px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-media{position:relative}
.hero-figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;opacity:.92}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,20,.1),rgba(7,12,20,.6))}
.glass-card{
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);
}
.hero-stats{
  position:absolute;right:-8px;bottom:-28px;padding:18px 20px;display:grid;grid-template-columns:repeat(3,1fr);
  gap:6px;min-width:300px;
}
.hero-stats div{padding:0 10px;text-align:center}
.hero-stats div + div{border-left:1px solid var(--line)}
.hero-stats b{display:block;font-size:26px;font-weight:800;color:var(--accent-500);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stats small{font-size:12px;color:var(--ink-300)}

/* 数据条 */
.data-bar{display:flex;flex-wrap:wrap;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-800)}
.data-bar .container-xxl{display:grid;grid-template-columns:repeat(4,1fr)}
.data-cell{padding:24px 8px;text-align:center;border-left:1px solid var(--line)}
.data-cell:first-child{border-left:0}
.data-cell b{display:block;font-size:34px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--ink-100);line-height:1.2}
.data-cell span{font-size:13px;color:var(--ink-500)}

/* 优惠阶梯 */
.stairs{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:end}
.stair{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px;box-shadow:var(--shadow-card);overflow:hidden;
}
.stair::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500));opacity:.5}
.stair:nth-child(1){min-height:190px}
.stair:nth-child(2){min-height:230px}
.stair:nth-child(3){min-height:270px;border-color:rgba(0,227,176,.4)}
.stair:nth-child(4){min-height:310px;border-color:rgba(255,122,47,.45)}
.stair:nth-child(3)::before,.stair:nth-child(4)::before{opacity:1}
.stair:nth-child(4)::before{background:linear-gradient(90deg,var(--promo-500),var(--accent-500))}
.stair-ico{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(29,91,255,.15);color:var(--accent-500);font-size:16px;margin-bottom:16px}
.stair:nth-child(4) .stair-ico{background:rgba(255,122,47,.15);color:var(--promo-500)}
.stair h3{font-size:18px;font-weight:700}
.stair .cond{font-size:13px;color:var(--ink-500);margin-top:6px}
.stair .benefit{font-size:15px;color:var(--ink-300);margin-top:14px}
.stair .benefit strong{color:var(--accent-500);font-variant-numeric:tabular-nums}
.stair:nth-child(4) .benefit strong{color:var(--promo-500)}
.stair-arrow{display:none}

/* 套餐对比 */
.plan-wrap{position:relative}
.plan-matrix{display:grid;grid-template-columns:1.1fr 1fr 1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-card)}
.plan-cell{padding:16px 18px;border-bottom:1px solid var(--line);border-left:1px solid var(--line);font-size:14px;color:var(--ink-300)}
.plan-cell.head{border-bottom:1px solid var(--line);background:var(--bg-800);position:sticky;top:72px;z-index:5}
.plan-cell.feature{border-left:0;color:var(--ink-100);font-weight:600;background:rgba(255,255,255,.02)}
.plan-cell.head.feature{background:var(--bg-800)}
.plan-headname{font-size:16px;font-weight:700;color:var(--ink-100);display:block}
.plan-headsub{font-size:12px;color:var(--ink-500)}
.price{display:flex;align-items:baseline;gap:4px;margin-top:6px}
.price b{font-size:38px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--ink-100);line-height:1}
.price span{font-size:13px;color:var(--ink-500)}
.plan-col-reco{position:relative;background:var(--glass);backdrop-filter:blur(14px) saturate(140%);margin-top:-8px;border-radius:var(--radius-md);border:1px solid rgba(0,227,176,.35)}
.tag-promo{
  display:inline-flex;align-items:center;gap:6px;background:var(--promo-500);color:#1A0C02;
  font-size:12px;font-weight:800;padding:4px 12px;border-radius:var(--radius-pill);
}
.mark-yes{color:var(--accent-500)}
.mark-no{color:var(--ink-500)}
.plan-cards{display:none}

/* 限时入口 */
.limit-panel{
  display:grid;grid-template-columns:auto 1fr auto;gap:32px;align-items:center;
  padding:32px;border-radius:var(--radius-lg);border:1px solid var(--line);
  background:linear-gradient(110deg,rgba(17,28,43,.96),rgba(7,12,20,.9) 62%,rgba(255,122,47,.10));
  backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.limit-panel::after{content:"";position:absolute;left:-60px;bottom:-90px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(255,122,47,.16),transparent 70%)}
.countdown{display:flex;gap:10px;position:relative;z-index:1}
.cd-cell{
  width:72px;padding:10px 0;text-align:center;border-radius:var(--radius-sm);
  background:var(--glass);border:1px solid var(--line);
}
.cd-cell b{display:block;font-size:28px;font-weight:800;color:var(--accent-500);font-variant-numeric:tabular-nums;line-height:1.2}
.cd-cell span{font-size:12px;color:var(--ink-500)}
.limit-text{position:relative;z-index:1}
.limit-text h2{font-size:clamp(20px,2vw,28px)}
.limit-text p{color:var(--ink-300);font-size:15px;margin-top:8px}
.limit-action{position:relative;z-index:1}

/* 表单 */
.form-panel{
  padding:32px;border-radius:var(--radius-lg);border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--ink-300);margin-bottom:8px}
.field .req{color:var(--promo-500);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius-sm);
  color:var(--ink-100);padding:12px 14px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-300) 50%),linear-gradient(135deg,var(--ink-300) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field textarea{min-height:110px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-500)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(0,227,176,.18)}
.field.has-error input,.field.has-error select{border-color:var(--promo-500)}
.field .err{display:none;font-size:12px;color:var(--promo-500);margin-top:8px}
.field.has-error .err{display:block}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-top:22px}
.privacy{font-size:12px;color:var(--ink-500);max-width:420px}
.contact-side{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-card)}
.contact-side h3{font-size:19px}
.contact-list{margin-top:20px}
.contact-list li{display:flex;gap:12px;padding:14px 0;border-top:1px solid var(--line);font-size:14px;color:var(--ink-300)}
.contact-list li i{color:var(--accent-500);margin-top:5px}
.contact-list b{color:var(--ink-100);display:block;font-size:15px;font-weight:600;margin-bottom:2px}

/* 资讯卡 */
.news-card{
  height:100%;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card);position:relative;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.news-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500));opacity:0;transition:opacity .22s var(--ease);z-index:2}
.news-card:hover{transform:translateY(-4px);border-color:rgba(76,141,255,.45)}
.news-card:hover::before{opacity:1}
.news-cover{position:relative;display:block;overflow:hidden}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .28s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.badge-cat{
  position:absolute;top:12px;left:12px;font-size:12px;padding:4px 10px;border-radius:var(--radius-pill);
  background:rgba(29,91,255,.18);border:1px solid rgba(0,227,176,.35);color:var(--accent-500);backdrop-filter:blur(6px);
}
.news-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-title{font-size:17px;font-weight:700;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a{color:var(--ink-100)}
.news-title a:hover{color:var(--accent-500)}
.news-desc{font-size:14px;color:var(--ink-300);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500)}
.news-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-500)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-lg);padding:64px 24px;text-align:center;color:var(--ink-300);
  background:rgba(255,255,255,.02);
}
.empty-state i{font-size:30px;color:var(--accent-500);display:block;margin-bottom:14px}

/* CTA 带 */
.cta-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-800);
  padding:44px 0;
}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(20px,2.2vw,28px)}
.cta-band p{color:var(--ink-300);font-size:14px;margin-top:6px}
.cta-divider{height:1px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500));opacity:.7}

/* FAQ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;color:var(--ink-100);font-size:17px;font-weight:600;
  padding:22px 4px 22px 0;text-align:left;cursor:pointer;transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent-500)}
.faq-q .plus{color:var(--accent-500);transition:transform .24s var(--ease);font-size:14px;flex:0 0 auto}
.faq-q[aria-expanded="true"] .plus{transform:rotate(45deg)}
.faq-a{padding:0 0 22px;color:var(--ink-300);font-size:15px;line-height:1.85;border-left:3px solid var(--accent-500);padding-left:16px;margin-left:1px}

/* 页脚 */
.site-footer{background:var(--bg-800);position:relative;padding:72px 0 0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500))}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{font-size:14px;color:var(--ink-300);max-width:320px}
.foot-title{font-size:14px;font-weight:700;color:var(--ink-100);margin-bottom:16px;letter-spacing:.04em}
.foot-list li{margin-bottom:10px}
.foot-list a{color:var(--ink-300);font-size:14px}
.foot-list a:hover{color:var(--accent-500);text-shadow:0 0 14px rgba(0,227,176,.6)}
.foot-contact li{display:flex;gap:10px;font-size:14px;color:var(--ink-300);margin-bottom:12px}
.foot-contact i{color:var(--accent-500);margin-top:5px}
.copyright{margin-top:56px;border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-500)}
.copyright a{color:var(--ink-300)}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-600),var(--accent-500));color:#05101F;border:0;cursor:pointer;
  box-shadow:var(--shadow-glow);opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;z-index:1050;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{filter:brightness(1.08)}

/* 响应式 */
@media (max-width:1199.98px){
  .mega-panel{width:680px;grid-template-columns:1fr 280px}
  .hero-inner{grid-template-columns:1fr 1fr;gap:36px}
  .data-bar .container-xxl{grid-template-columns:repeat(2,1fr)}
  .data-cell:nth-child(3),.data-cell:nth-child(4){border-top:1px solid var(--line)}
  .data-cell:nth-child(3){border-left:0}
}
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex}
  .nav-collapse{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:8px;
    background:rgba(7,12,20,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
    padding:12px 24px 22px;display:none;
  }
  .nav-collapse.is-open{display:flex}
  .nav-menu{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-link{width:100%;justify-content:space-between;padding:16px 4px;border-radius:0}
  .nav-link.is-active::after{left:0;right:auto;width:28px;bottom:8px}
  .nav-actions{width:100%}
  .nav-actions .btn-ghost{width:100%}
  .mega-panel{display:none}
  .hero-inner{grid-template-columns:1fr;padding:64px 0 80px}
  .hero-stats{position:static;margin-top:20px;min-width:0}
  .stairs{grid-template-columns:1fr;gap:0;align-items:stretch}
  .stair{min-height:0 !important;border-radius:0;border-left:3px solid rgba(0,227,176,.5);margin-left:16px}
  .stair:first-child{border-top-left-radius:var(--radius-md);border-top-right-radius:var(--radius-md)}
  .stair:last-child{border-bottom-left-radius:var(--radius-md);border-bottom-right-radius:var(--radius-md)}
  .stair + .stair{margin-top:14px}
  .plan-matrix{display:none}
  .plan-cards{display:grid;gap:18px}
  .plan-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:22px;box-shadow:var(--shadow-card)}
  .plan-card.reco{border-color:rgba(0,227,176,.4);background:var(--glass)}
  .plan-card ul{margin-top:14px}
  .plan-card li{display:flex;gap:10px;font-size:14px;color:var(--ink-300);padding:9px 0;border-top:1px solid var(--line)}
  .plan-card li i{color:var(--accent-500);margin-top:5px}
  .limit-panel{grid-template-columns:1fr;gap:22px;padding:26px}
  .cd-cell{width:64px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .plan-cell.head{position:static}
}
@media (max-width:767.98px){
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .container-xxl{padding:0 18px}
  .topbar-inner{padding:8px 18px;flex-wrap:wrap;gap:8px}
  .topbar-links{gap:12px}
  .hero-inner{padding:52px 0 64px}
  .hero-cta{gap:12px}
  .hero-cta .btn-glow,.hero-cta .btn-ghost{width:100%}
  .data-bar .container-xxl{grid-template-columns:repeat(2,1fr)}
  .data-cell b{font-size:26px}
  .form-panel,.contact-side{padding:22px}
  .form-foot{flex-direction:column;align-items:stretch}
  .form-foot .btn-glow{width:100%}
  .countdown{gap:8px}
  .cd-cell{width:58px}
  .cd-cell b{font-size:22px}
  .copyright{flex-direction:column}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:575.98px){
  .foot-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(3,1fr);padding:14px 10px}
  .hero-stats b{font-size:20px}
  .plan-cell{padding:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .news-card:hover,.btn-glow:hover,.btn-ghost:hover{transform:none}
}

/* roulang page: article */
:root{
  --bg-900:#070C14;
  --bg-800:#0C1420;
  --surface:#111C2B;
  --glass:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --brand-600:#1D5BFF;
  --brand-400:#4C8DFF;
  --accent-500:#00E3B0;
  --promo-500:#FF7A2F;
  --ink-100:#EAF1FF;
  --ink-300:#9FB0C9;
  --ink-500:#6B7C94;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-glow:0 0 0 1px rgba(0,227,176,.25), 0 10px 30px -8px rgba(29,91,255,.55);
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:96px;
  --bs-body-bg:#070C14;
  --bs-body-color:#EAF1FF;
  --bs-primary:#1D5BFF;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-link-color:#00E3B0;
  --bs-link-hover-color:#4C8DFF;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-card-bg:#111C2B;
  --bs-card-border-color:rgba(255,255,255,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg-900);
  background-image:
    radial-gradient(680px 420px at 88% -6%,rgba(0,227,176,.12),transparent 62%),
    radial-gradient(560px 380px at 4% 96%,rgba(29,91,255,.10),transparent 60%),
    repeating-linear-gradient(118deg,rgba(255,255,255,.028) 0 1px,transparent 1px 15px);
  color:var(--ink-100);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--accent-500);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--brand-400)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(0,227,176,.55);outline-offset:2px}
.container-xxl{width:100%;max-width:1280px;margin:0 auto;padding-left:20px;padding-right:20px}
.weak{color:var(--ink-500)}
/* ============ 顶部工具条 ============ */
.topbar{background:var(--bg-800);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-300)}
.topbar-inner{max-width:1280px;margin:0 auto;padding:8px 20px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.topbar-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.topbar-links a{color:var(--ink-300);border-bottom:1px solid transparent}
.topbar-links a:hover{color:var(--ink-100);border-bottom-color:var(--accent-500)}
/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.site-nav{background:rgba(12,20,32,.72);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:background .2s ease-out,border-color .2s ease-out}
.site-header.is-scrolled .site-nav{background:rgba(7,12,20,.88);border-bottom-color:rgba(255,255,255,.14)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .2s ease-out}
.site-header.is-scrolled .nav-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-100)}
.logo:hover{color:var(--ink-100)}
.logo-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:17px;color:#04121A;background:linear-gradient(135deg,var(--brand-400),var(--accent-500));box-shadow:0 6px 18px -8px rgba(0,227,176,.7)}
.logo-text{font-weight:800;font-size:18px;letter-spacing:.01em}
.nav-collapse{display:flex;align-items:center;gap:24px;flex:1;justify-content:flex-end}
.nav-menu{list-style:none;display:flex;align-items:center;gap:6px;margin:0;padding:0}
.nav-item{position:relative}
.nav-link{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:var(--r-sm);color:var(--ink-300);font-size:15px;font-weight:600;position:relative;transition:color .2s ease-out,background .2s ease-out}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500));transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out}
.nav-link:hover{color:var(--ink-100);background:rgba(255,255,255,.05)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink-100)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--ink-100);cursor:pointer}
.nav-cta{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:var(--r-pill);background:linear-gradient(135deg,var(--brand-600),var(--accent-500));color:#04121A;font-weight:700;font-size:14px;box-shadow:var(--shadow-glow);transition:transform .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out}
.nav-cta:hover{color:#04121A;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(0,227,176,.35),0 14px 34px -8px rgba(29,91,255,.6)}
/* Mega 面板 */
.mega-panel{position:absolute;top:calc(100% + 12px);left:50%;transform:translate(-50%,10px);width:min(820px,86vw);padding:24px;border-radius:var(--r-lg);background:rgba(12,20,32,.86);backdrop-filter:blur(14px) saturate(140%);border:1px solid var(--line);box-shadow:0 30px 70px -30px rgba(0,0,0,.9);display:grid;grid-template-columns:1.1fr .9fr;gap:28px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.mega-title{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-500);margin-bottom:12px;font-weight:700}
.mega-list{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.mega-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 12px;border-radius:var(--r-sm);color:var(--ink-300);font-size:14px}
.mega-list a i{opacity:0;transform:translateX(-4px);transition:opacity .18s ease-out,transform .18s ease-out}
.mega-list a:hover{background:rgba(255,255,255,.06);color:var(--ink-100)}
.mega-list a:hover i{opacity:1;transform:translateX(0)}
.mega-cards{display:grid;gap:12px;align-content:start}
.mega-card{display:block;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--surface);transition:transform .2s ease-out,border-color .2s ease-out}
.mega-card:hover{transform:translateY(-3px);border-color:var(--brand-400)}
.mega-card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.mega-card span{display:block;padding:12px 14px;font-size:13px;color:var(--ink-300)}
.mega-foot{grid-column:1 / -1;border-top:1px solid var(--line);padding-top:14px}
.mega-foot a{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent-500)}
/* ============ 文章头部 ============ */
.page-head{padding:44px 0 8px;position:relative}
.breadcrumb-nav{font-size:13px;color:var(--ink-500);margin-bottom:16px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb-nav .sep{color:rgba(255,255,255,.22)}
.breadcrumb-nav a{color:var(--ink-500)}
.breadcrumb-nav a:hover{color:var(--accent-500)}
.breadcrumb-nav .cur{color:var(--ink-100)}
.col-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--accent-500);letter-spacing:.08em;margin-bottom:14px}
.col-tag::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500))}
h1.article-title{font-size:clamp(26px,3.4vw,40px);font-weight:800;line-height:1.3;letter-spacing:-.02em;margin:0 0 20px;max-width:960px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13px;color:var(--ink-500);padding-bottom:28px;border-bottom:1px solid var(--line)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-500);display:inline-block}
.meta-row .back-link{margin-left:auto;color:var(--accent-500);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.meta-row .back-link:hover{gap:10px}
/* ============ 文章布局 ============ */
.article-section{padding:40px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px}
.article-hero-img{margin:0 0 32px;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:linear-gradient(135deg,#0C1420,#111C2B)}
.article-hero-img img{width:100%;aspect-ratio:16/7;object-fit:cover;opacity:.92}
.article-body{max-width:820px;font-size:17px;line-height:1.95;color:#DCE6F7}
.article-body>h2{font-size:clamp(21px,2.2vw,28px);font-weight:700;color:var(--ink-100);margin:2.1em 0 .8em;padding-left:16px;position:relative;line-height:1.45}
.article-body>h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:linear-gradient(180deg,var(--brand-600),var(--accent-500))}
.article-body h3{font-size:19px;font-weight:600;color:var(--accent-500);margin:1.7em 0 .6em}
.article-body p{margin:0 0 1.1em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em}
.article-body li{margin:.4em 0}
.article-body ul li::marker{color:var(--accent-500)}
.article-body ol li::marker{color:var(--accent-500);font-weight:700}
.article-body blockquote{margin:1.6em 0;padding:20px 24px;border-left:3px solid var(--accent-500);border-radius:0 var(--r-md) var(--r-md) 0;background:rgba(255,255,255,.05);backdrop-filter:blur(8px);color:var(--ink-300)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--accent-500);background-image:linear-gradient(90deg,var(--accent-500),var(--accent-500));background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .22s ease-out}
.article-body a:hover{color:var(--brand-400);background-image:linear-gradient(90deg,var(--brand-400),var(--accent-500));background-size:100% 1px}
.article-body img{border-radius:var(--r-md);border:1px solid var(--line);margin:1.6em auto;width:100%}
.article-body figure{margin:1.8em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-500);margin-top:10px}
.article-body code{background:rgba(0,227,176,.10);color:var(--accent-500);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body pre{background:#0A121E;border:1px solid var(--line);border-radius:var(--r-md);padding:18px;overflow-x:auto}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;background:var(--surface);border-radius:var(--r-md);overflow:hidden}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;color:#DCE6F7}
.article-body th{background:rgba(29,91,255,.14);color:var(--ink-100);font-weight:700;white-space:nowrap}
.article-table-wrap{overflow-x:auto;border-radius:var(--r-md)}
/* 侧栏 */
.article-side{display:none}
.side-card{border:1px solid var(--line);border-radius:var(--r-md);background:var(--glass);backdrop-filter:blur(14px) saturate(140%);padding:20px;box-shadow:var(--shadow-card);margin-bottom:20px}
.side-card h2,.side-card .side-title{font-size:14px;font-weight:700;color:var(--ink-100);margin:0 0 14px;display:flex;align-items:center;gap:8px}
.side-card .side-title i{color:var(--accent-500)}
.toc-list{list-style:none;margin:0;padding:0;max-height:52vh;overflow-y:auto;border-left:1px solid var(--line)}
.toc-list li{margin:0}
.toc-list a{display:block;padding:7px 0 7px 14px;font-size:13.5px;color:var(--ink-500);border-left:2px solid transparent;margin-left:-1px;line-height:1.55}
.toc-list a:hover{color:var(--ink-100)}
.toc-list a.is-current{color:var(--accent-500);border-left-color:var(--accent-500);background:rgba(0,227,176,.06)}
.toc-list .lv3 a{padding-left:26px;font-size:13px}
.side-empty{font-size:13px;color:var(--ink-500)}
.rel-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.rel-list a{display:flex;gap:12px;align-items:center;color:var(--ink-300)}
.rel-list img{width:64px;height:44px;border-radius:8px;object-fit:cover;border:1px solid var(--line);flex:0 0 auto}
.rel-list span{font-size:13.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-list a:hover span{color:var(--ink-100)}
/* 空态 */
.empty-state{border:1px dashed var(--line);border-radius:var(--r-lg);background:var(--glass);backdrop-filter:blur(14px);padding:56px 28px;text-align:center}
.empty-state i{font-size:34px;color:var(--accent-500);margin-bottom:16px;display:block}
.empty-state h2{font-size:20px;font-weight:700;margin:0 0 10px}
.empty-state p{color:var(--ink-300);margin:0 0 22px}
/* 文末相关 */
.related-section{padding:8px 0 64px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{font-size:clamp(22px,2.4vw,32px);font-weight:700;margin:0;letter-spacing:-.01em}
.sec-head .more{font-size:14px;font-weight:600;color:var(--accent-500);display:inline-flex;align-items:center;gap:6px}
.sec-head .more:hover{gap:10px}
.rel-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.rel-card{border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-card);transition:transform .2s ease-out,border-color .2s ease-out}
.rel-card:hover{transform:translateY(-4px);border-color:var(--brand-400)}
.rel-card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.rel-card .rc-body{padding:18px}
.rel-card h3{font-size:16px;font-weight:600;line-height:1.55;margin:0 0 8px;color:var(--ink-100)}
.rel-card p{margin:0;font-size:13.5px;color:var(--ink-500)}
.rel-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
/* 按钮 */
.btn-glow,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:var(--r-pill);font-weight:700;font-size:15px;cursor:pointer;border:1px solid transparent;transition:transform .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out;white-space:nowrap}
.btn-glow{background:linear-gradient(135deg,var(--brand-600),var(--accent-500));color:#04121A;box-shadow:var(--shadow-glow)}
.btn-glow:hover{color:#04121A;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(0,227,176,.35),0 16px 38px -8px rgba(29,91,255,.62)}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(0,227,176,.3),0 8px 20px -10px rgba(29,91,255,.5)}
.btn-ghost{background:transparent;color:var(--ink-100);border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{color:var(--ink-100);background:rgba(255,255,255,.06);border-color:var(--brand-400);transform:translateY(-2px)}
.btn-glow:disabled,.btn-ghost:disabled{opacity:.4;cursor:not-allowed;transform:none}
/* CTA 带 */
.cta-band{margin:0 0 96px}
.cta-band-inner{border:1px solid var(--line);border-radius:var(--r-lg);background:linear-gradient(120deg,rgba(29,91,255,.16),rgba(0,227,176,.10) 55%,rgba(255,122,47,.08));padding:30px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band-inner strong{display:block;font-size:clamp(19px,2vw,24px);font-weight:700;color:var(--ink-100)}
.cta-band-inner span{font-size:14px;color:var(--ink-300)}
/* 页脚 */
.site-footer{border-top:1px solid var(--line);position:relative;background:var(--bg-800);padding:64px 0 28px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500))}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand p{color:var(--ink-300);font-size:14px;margin:16px 0 0;max-width:340px}
.foot-title{font-size:14px;font-weight:700;color:var(--ink-100);margin-bottom:16px;letter-spacing:.04em}
.foot-list,.foot-contact{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.foot-list a{color:var(--ink-300);font-size:14px}
.foot-list a:hover{color:var(--accent-500)}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-300)}
.foot-contact i{color:var(--accent-500);margin-top:5px;transition:text-shadow .2s ease-out}
.foot-contact li:hover i{text-shadow:0 0 12px rgba(0,227,176,.85)}
.copyright{margin-top:44px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-500)}
.copyright a{color:var(--ink-500)}
.copyright a:hover{color:var(--accent-500)}
/* 返回顶部 */
.to-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;border:1px solid rgba(0,227,176,.4);background:rgba(12,20,32,.9);color:var(--accent-500);display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;box-shadow:0 0 0 1px rgba(0,227,176,.14),0 14px 30px -12px rgba(0,227,176,.6);z-index:1040}
.to-top.is-on{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(0,227,176,.14)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}
/* ============ 响应式 ============ */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,820px) 246px;justify-content:center}
  .article-side{display:block;position:sticky;top:104px;align-self:start;height:fit-content}
}
@media (max-width:1199px){
  .article-side{display:block;order:2}
  .article-layout{gap:36px}
  .toc-list{max-height:none}
}
@media (max-width:991px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-toggle{display:inline-grid;place-items:center}
  .nav-inner{height:64px;position:relative}
  .site-header.is-scrolled .nav-inner{height:58px}
  .nav-collapse{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;background:rgba(7,12,20,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding:10px 16px 20px;max-height:78vh;overflow-y:auto}
  .nav-collapse.is-open{display:flex}
  .nav-menu{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-link{width:100%;justify-content:space-between;padding:14px 6px;border-radius:0}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--accent-500)}
  .mega-panel{position:static;transform:none;opacity:1;visibility:visible;pointer-events:auto;width:100%;display:none;grid-template-columns:1fr;gap:18px;background:transparent;border:none;box-shadow:none;padding:10px 0 18px}
  .has-mega.is-open .mega-panel{display:grid}
  .has-mega.is-open>.nav-link{background:rgba(255,255,255,.06);color:var(--ink-100)}
  .has-mega.is-open>.nav-link i{transform:rotate(180deg)}
  .nav-link i{transition:transform .2s ease-out}
  .nav-cta{width:100%;justify-content:center;margin-top:14px}
}
@media (max-width:767px){
  .page-head{padding:32px 0 6px}
  .article-section{padding:28px 0 56px}
  .cta-band{margin-bottom:64px}
  .cta-band-inner{padding:24px;flex-direction:column;align-items:flex-start}
  .article-body{font-size:16px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .topbar-links .weak{display:none}
}
@media (max-width:575px){
  .topbar-inner{font-size:12px}
  .cta-band-inner .btn-glow,.cta-band-inner .btn-ghost{width:100%}
  .rel-cards{grid-template-columns:1fr}
}

/* roulang page: category1 */
:root{
  --bg-900:#070C14;
  --bg-800:#0C1420;
  --surface:#111C2B;
  --glass:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --brand-600:#1D5BFF;
  --brand-400:#4C8DFF;
  --accent-500:#00E3B0;
  --promo-500:#FF7A2F;
  --ink-100:#EAF1FF;
  --ink-300:#9FB0C9;
  --ink-500:#6B7C94;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:22px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-glow:0 0 0 1px rgba(0,227,176,.25),0 10px 30px -8px rgba(29,91,255,.55);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-body-bg:#070C14;
  --bs-body-color:#EAF1FF;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-primary:#1D5BFF;
  --bs-link-color:#00E3B0;
  --bs-link-hover-color:#4C8DFF;
  --bs-card-bg:#111C2B;
  --bs-card-border-color:rgba(255,255,255,.10);
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  position:relative;
  background:var(--bg-900);
  color:var(--ink-100);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.035) 0 1px,transparent 1px 15px);
}
body::after{
  content:"";
  position:fixed;
  width:860px;height:860px;
  right:-300px;top:-320px;
  pointer-events:none;
  z-index:0;
  background:radial-gradient(circle,rgba(0,227,176,.12),transparent 62%);
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--accent-500);text-decoration:none;transition:color .18s var(--ease),background-size .18s var(--ease)}
a:hover{color:var(--brand-400)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.28}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(0,227,176,.55);outline-offset:2px;border-radius:6px}

.container-xxl{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  position:relative;
  z-index:1;
}

/* ============ 顶部工具条 ============ */
.topbar{
  background:var(--bg-800);
  border-bottom:1px solid var(--line);
  position:relative;
  z-index:3;
}
.topbar-inner{
  max-width:1280px;
  margin:0 auto;
  padding:0 24px;
  height:38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  font-size:13px;
  color:var(--ink-300);
}
.topbar-links{display:flex;align-items:center;gap:20px;white-space:nowrap}
.topbar-links a{color:var(--ink-300);border-bottom:1px solid transparent}
.topbar-links a:hover{color:var(--accent-500);border-bottom-color:rgba(0,227,176,.5)}
.topbar .weak{color:var(--ink-500)}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
}
.site-nav{
  background:rgba(7,12,20,.72);
  backdrop-filter:blur(10px) saturate(140%);
  -webkit-backdrop-filter:blur(10px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled .site-nav{
  background:rgba(7,12,20,.88);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
  transition:min-height .22s var(--ease);
}
.site-header.is-scrolled .nav-inner{min-height:60px}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink-100);
  flex-shrink:0;
}
.logo:hover{color:var(--ink-100)}
.logo-mark{
  width:38px;height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--brand-600),var(--accent-500));
  color:#04131B;
  font-weight:800;
  font-size:19px;
  box-shadow:0 8px 22px -10px rgba(0,227,176,.7);
}
.logo-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
}
.nav-collapse{display:flex;align-items:center;gap:8px;flex:1;justify-content:flex-end}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 14px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-300);
  border-radius:var(--radius-sm);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent-500));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink-100);background:rgba(255,255,255,.05)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink-100)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{
  margin-left:12px;
  padding:11px 20px;
  font-size:14px;
  font-weight:700;
  border-radius:var(--radius-pill);
  color:#04131B;
  background:linear-gradient(135deg,var(--brand-600) 0%,var(--accent-500) 100%);
  box-shadow:var(--shadow-glow);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{color:#04131B;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,227,176,.35),0 14px 34px -8px rgba(29,91,255,.7)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--ink-100);
  font-size:18px;
  cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.09);border-color:var(--brand-400)}

/* Mega Menu */
.has-mega .mega-panel{
  position:absolute;
  top:calc(100% + 12px);
  left:50%;
  transform:translate(-50%,8px);
  width:760px;
  padding:24px;
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:24px;
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity .16s var(--ease),transform .16s var(--ease),visibility .16s;
  max-height:none;
  overflow:visible;
}
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel{
  opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);
}
.mega-title{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--accent-500);
  font-weight:700;
  margin-bottom:14px;
}
.mega-list li+li{border-top:1px solid var(--line)}
.mega-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:11px 6px;
  font-size:14px;
  color:var(--ink-300);
}
.mega-list a i{font-size:11px;color:var(--ink-500);transition:transform .18s var(--ease),color .18s var(--ease)}
.mega-list a:hover{color:var(--ink-100)}
.mega-list a:hover i{color:var(--accent-500);transform:translateX(4px)}
.mega-cards{display:grid;gap:14px}
.mega-card{
  display:flex;
  gap:14px;
  align-items:center;
  padding:12px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.mega-card:hover{border-color:var(--brand-400);transform:translateY(-2px)}
.mega-card img{
  width:76px;height:56px;
  object-fit:cover;
  border-radius:10px;
  flex-shrink:0;
}
.mega-card strong{display:block;font-size:14px;color:var(--ink-100);font-weight:700}
.mega-card span{display:block;font-size:12px;color:var(--ink-500);line-height:1.6}
.mega-foot{
  grid-column:1 / -1;
  border-top:1px solid var(--line);
  padding-top:14px;
  font-size:13px;
}
.mega-foot a{
  color:var(--accent-500);
  background-image:linear-gradient(90deg,var(--accent-500),var(--accent-500));
  background-size:0% 1px;
  background-repeat:no-repeat;
  background-position:0 100%;
  transition:background-size .2s var(--ease),color .2s var(--ease);
}
.mega-foot a:hover{background-size:100% 1px}

/* ============ 通用板块 ============ */
main{position:relative;z-index:1}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--accent-500);
  font-weight:700;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent-500));
  border-radius:2px;
}
.section-title{font-size:clamp(24px,2.6vw,36px);font-weight:700}
.section-desc{margin-top:14px;color:var(--ink-300);font-size:15px;max-width:660px}
.link-arrow{
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  color:var(--accent-500);
  background-image:linear-gradient(90deg,var(--accent-500),var(--accent-500));
  background-size:0% 1px;
  background-repeat:no-repeat;
  background-position:0 100%;
  padding-bottom:2px;
  transition:background-size .2s var(--ease),color .2s var(--ease);
}
.link-arrow:hover{background-size:100% 1px;color:var(--brand-400)}

/* 按钮 */
.btn-glow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  font-size:15px;
  font-weight:700;
  border:none;
  border-radius:var(--radius-pill);
  color:#04131B;
  background:linear-gradient(135deg,var(--brand-600) 0%,var(--accent-500) 100%);
  box-shadow:var(--shadow-glow);
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease);
}
.btn-glow:hover{color:#04131B;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,227,176,.4),0 16px 38px -10px rgba(29,91,255,.75)}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(0,227,176,.3),0 8px 20px -10px rgba(29,91,255,.6)}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-100);
  background:transparent;
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius-pill);
  cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn-ghost:hover{color:var(--ink-100);background:rgba(255,255,255,.06);border-color:var(--brand-400);transform:translateY(-2px)}

/* ============ 面包屑 ============ */
.crumb{
  padding:20px 0 0;
  font-size:13px;
  color:var(--ink-500);
}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--ink-500)}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--accent-500)}
.crumb .current{color:var(--ink-100)}

/* ============ 分类横幅 ============ */
.cat-hero{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  min-height:360px;
  display:flex;
  align-items:center;
  margin-top:16px;
  background:#0A1220;
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-image:linear-gradient(90deg,rgba(7,12,20,.92) 0%,rgba(7,12,20,.74) 46%,rgba(7,12,20,.42) 100%),
                   linear-gradient(135deg,rgba(29,91,255,.42),rgba(0,227,176,.14)),
                   url("/assets/images/backpic/back-1.png");
  background-size:cover,cover,cover;
  background-position:center,center,center;
}
.cat-hero::after{
  content:"";
  position:absolute;
  width:520px;height:520px;
  left:-160px;bottom:-260px;
  background:radial-gradient(circle,rgba(0,227,176,.16),transparent 62%);
  pointer-events:none;
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  padding:64px 56px;
  max-width:720px;
}
.cat-hero h1{
  font-size:clamp(30px,4.2vw,48px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.24;
  margin-bottom:18px;
}
.cat-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--brand-400),var(--accent-500));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-hero p{
  color:var(--ink-300);
  font-size:16px;
  max-width:560px;
  margin-bottom:28px;
}
.cat-hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.badge-cat{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  font-size:12px;
  font-weight:700;
  border-radius:var(--radius-pill);
  color:var(--accent-500);
  background:rgba(0,227,176,.12);
  border:1px solid rgba(0,227,176,.32);
  margin-bottom:20px;
}

/* ============ 数据条 ============ */
.stat-strip{
  margin-top:48px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--surface);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.stat-item{
  padding:26px 24px;
  border-right:1px solid var(--line);
}
.stat-item:last-child{border-right:none}
.stat-item .stat-label{
  font-size:13px;
  color:var(--ink-500);
  margin-bottom:6px;
}
.stat-item .stat-value{
  font-size:clamp(20px,2vw,26px);
  font-weight:800;
  font-variant-numeric:tabular-nums;
  color:var(--ink-100);
  letter-spacing:-.01em;
}
.stat-item .stat-value small{
  font-size:13px;
  color:var(--accent-500);
  font-weight:600;
  margin-left:6px;
}

/* ============ 流程时间轴 ============ */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:20px;
  padding-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:28px;right:28px;top:29px;
  height:1px;
  background:linear-gradient(90deg,rgba(29,91,255,.6),rgba(0,227,176,.6));
}
.tl-step{position:relative;padding-top:64px}
.tl-dot{
  position:absolute;
  top:0;left:0;
  width:58px;height:58px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  font-size:17px;
  color:var(--accent-500);
  background:var(--bg-800);
  border:1px solid rgba(0,227,176,.35);
  box-shadow:0 0 0 6px rgba(7,12,20,.9);
}
.tl-step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.tl-step p{font-size:14px;color:var(--ink-300);line-height:1.8}

/* ============ 服务清单（左文右列） ============ */
.split{
  display:grid;
  grid-template-columns:0.85fr 1.15fr;
  gap:56px;
  align-items:start;
}
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:18px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(255,255,255,.025);
  transition:border-color .18s var(--ease),transform .18s var(--ease),background .18s var(--ease);
}
.check-list li:hover{border-color:rgba(0,227,176,.4);background:rgba(0,227,176,.05);transform:translateY(-3px)}
.check-list i{
  color:var(--accent-500);
  font-size:14px;
  margin-top:6px;
}
.check-list strong{display:block;font-size:15px;font-weight:700;margin-bottom:4px}
.check-list span{font-size:13.5px;color:var(--ink-300);line-height:1.75}

/* ============ 非对称案例卡组 ============ */
.case-grid{
  display:grid;
  grid-template-columns:1.18fr 1fr 0.86fr;
  gap:24px;
  align-items:start;
}
.case-card{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.case-card:hover{transform:translateY(-4px);border-color:rgba(76,141,255,.55)}
.case-card.is-offset{margin-top:34px}
.case-media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,#0E1A2B,#132840);
}
.case-card.is-small .case-media{aspect-ratio:4/3}
.case-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .3s var(--ease);
}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,.05),rgba(7,12,20,.7));
}
.case-tag{
  position:absolute;
  top:14px;left:14px;
  z-index:2;
  padding:5px 12px;
  font-size:12px;
  font-weight:700;
  border-radius:var(--radius-pill);
  color:var(--accent-500);
  background:rgba(7,12,20,.7);
  border:1px solid rgba(0,227,176,.35);
  backdrop-filter:blur(6px);
}
.case-body{padding:22px 24px 26px}
.case-body h3{font-size:18px;font-weight:700;margin-bottom:10px}
.case-body p{font-size:14px;color:var(--ink-300);line-height:1.8}
.case-meta{
  margin-top:16px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  font-size:12.5px;
  color:var(--ink-500);
}
.case-meta span{
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
}

/* ============ 保障横条 ============ */
.guarantee{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.guarantee li{
  padding:28px 24px;
  border-right:1px solid var(--line);
}
.guarantee li:last-child{border-right:none}
.guarantee i{color:var(--accent-500);font-size:20px;margin-bottom:12px;display:block}
.guarantee strong{display:block;font-size:16px;font-weight:700;margin-bottom:6px}
.guarantee span{font-size:13.5px;color:var(--ink-300);line-height:1.75}

/* ============ FAQ ============ */
.faq-panel{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 26px;
  background:transparent;
  border:none;
  color:var(--ink-100);
  font-size:17px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:background .18s var(--ease);
}
.faq-q:hover{background:rgba(255,255,255,.04)}
.faq-q i{
  flex-shrink:0;
  font-size:14px;
  color:var(--accent-500);
  transition:transform .2s var(--ease);
}
.faq-q[aria-expanded="true"]{background:rgba(255,255,255,.05)}
.faq-q[aria-expanded="true"] i{transform:rotate(45deg)}
.faq-a{
  padding:0 26px 24px 26px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-300);
  border-left:3px solid var(--accent-500);
  margin-left:26px;
  padding-left:20px;
}
.faq-item.is-open{background:rgba(255,255,255,.03)}

/* ============ CTA 带 ============ */
.cta-band{
  margin-top:96px;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:linear-gradient(110deg,rgba(29,91,255,.18),rgba(7,12,20,.9) 48%,rgba(0,227,176,.12));
  box-shadow:var(--shadow-card);
  padding:34px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--ink-300)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  position:relative;
  z-index:1;
  background:var(--bg-800);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent-500),transparent);
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding:72px 0 48px;
}
.foot-brand p{
  margin-top:18px;
  font-size:14px;
  color:var(--ink-300);
  line-height:1.85;
  max-width:340px;
}
.foot-title{
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
}
.foot-list li+li{margin-top:12px}
.foot-list a{font-size:14px;color:var(--ink-300)}
.foot-list a:hover{color:var(--accent-500)}
.foot-contact li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:var(--ink-300);
  line-height:1.8;
}
.foot-contact li+li{margin-top:14px}
.foot-contact i{color:var(--accent-500);margin-top:7px;font-size:13px;transition:text-shadow .2s var(--ease)}
.foot-contact li:hover i{text-shadow:0 0 12px rgba(0,227,176,.9)}
.copyright{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--ink-500);
}
.copyright a{color:var(--ink-500)}
.copyright a:hover{color:var(--accent-500)}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:24px;bottom:24px;
  width:48px;height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid rgba(0,227,176,.4);
  background:rgba(17,28,43,.85);
  color:var(--accent-500);
  box-shadow:0 0 0 1px rgba(0,227,176,.16),0 12px 28px -12px rgba(0,227,176,.7);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(0,227,176,.14);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .section{padding:84px 0}
  .split{gap:40px}
  .case-grid{grid-template-columns:1fr 1fr}
  .case-card.is-small{grid-column:1 / -1;max-width:420px}
  .case-card.is-offset{margin-top:0}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:none}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-collapse{
    position:absolute;
    top:100%;left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:12px 16px 20px;
    background:rgba(7,12,20,.97);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    max-height:calc(100vh - 120px);
    overflow-y:auto;
  }
  .nav-collapse.is-open{display:flex}
  .nav-menu{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-item:last-child{border-bottom:none}
  .nav-link{width:100%;justify-content:space-between;padding:15px 6px;border-radius:0}
  .nav-link::after{display:none}
  .nav-link.is-active{background:rgba(255,255,255,.05);color:var(--accent-500)}
  .has-mega .mega-panel{
    position:static;
    transform:none;
    width:100%;
    opacity:1;
    visibility:hidden;
    display:none;
    pointer-events:auto;
    grid-template-columns:1fr;
    padding:16px; 
    border-radius:var(--radius);
    margin-bottom:10px;
    backdrop-filter:blur(6px);
    -webkit-backdrop-filter:blur(6px);
    background:rgba(17,28,43,.9);
  }
  .has-mega.is-open .mega-panel{display:grid;visibility:visible}
  .has-mega .nav-link i{transition:transform .2s var(--ease)}
  .has-mega.is-open .nav-link i{transform:rotate(180deg)}
  .nav-cta{margin:16px 0 0;width:100%}
  .section{padding:72px 0}
  .cat-hero-inner{padding:48px 32px}
  .timeline{grid-template-columns:1fr;gap:0}
  .timeline::before{left:28px;right:auto;top:8px;bottom:8px;width:1px;height:auto;background:linear-gradient(180deg,rgba(29,91,255,.6),rgba(0,227,176,.6))}
  .tl-step{padding:0 0 28px 84px}
  .tl-step:last-child{padding-bottom:0}
  .tl-dot{top:0}
  .split{grid-template-columns:1fr;gap:32px}
  .guarantee{grid-template-columns:repeat(2,1fr)}
  .guarantee li:nth-child(2){border-right:none}
  .guarantee li:nth-child(1),.guarantee li:nth-child(2){border-bottom:1px solid var(--line)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px;padding:56px 0 36px}
  .cta-band{padding:28px}
}
@media (max-width:767px){
  .container-xxl{padding-left:18px;padding-right:18px}
  .topbar-inner{padding:0 18px;font-size:12px}
  .topbar-inner > span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:48%}
  .topbar-links .weak{display:none}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .cat-hero{min-height:auto;margin-top:12px}
  .cat-hero-inner{padding:36px 22px}
  .cat-hero-actions .btn-glow,.cat-hero-actions .btn-ghost{width:100%}
  .stat-strip{grid-template-columns:1fr;margin-top:32px}
  .stat-item{border-right:none;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:none}
  .check-list{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .case-card.is-small{max-width:100%}
  .guarantee{grid-template-columns:1fr}
  .guarantee li{border-right:none;border-bottom:1px solid var(--line)}
  .guarantee li:last-child{border-bottom:none}
  .faq-q{padding:18px 18px;font-size:15.5px}
  .faq-a{margin-left:18px;padding:0 18px 20px 16px}
  .cta-band{margin-top:56px;padding:24px 20px;flex-direction:column;align-items:flex-start}
  .cta-band .btn-glow{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .logo-text{font-size:17px}
  .link-arrow{white-space:normal}
}
@media (max-width:519px){
  .cat-hero h1{font-size:26px}
  .nav-inner{min-height:64px}
  .logo-mark{width:34px;height:34px;font-size:17px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .case-card:hover{transform:none}
  .btn-glow:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --bg-900:#070C14;
  --bg-800:#0C1420;
  --surface:#111C2B;
  --glass:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --brand-600:#1D5BFF;
  --brand-400:#4C8DFF;
  --accent-500:#00E3B0;
  --promo-500:#FF7A2F;
  --ink-100:#EAF1FF;
  --ink-300:#9FB0C9;
  --ink-500:#6B7C94;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
  --bs-body-bg:var(--bg-900);
  --bs-body-color:var(--ink-100);
  --bs-primary:var(--brand-600);
  --bs-border-color:var(--line);
  --bs-link-color:var(--brand-400);
  --bs-link-hover-color:var(--accent-500);
  --bs-font-sans-serif:var(--font-cn);
  --bs-body-font-family:var(--font-cn);
  --bs-card-bg:var(--surface);
  --bs-card-border-color:var(--line);
  --bs-card-color:var(--ink-100);
  --bs-btn-bg:transparent;
  --bs-btn-color:var(--ink-100);
  --bs-btn-border-color:var(--line);
  --bs-btn-hover-bg:rgba(255,255,255,.06);
  --bs-btn-hover-color:#fff;
  --bs-btn-hover-border-color:var(--brand-400);
  --bs-accordion-bg:transparent;
  --bs-accordion-color:var(--ink-100);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;padding:0;
  background:var(--bg-900);
  color:var(--ink-100);
  font-family:var(--font-cn);
  font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    repeating-linear-gradient(115deg,rgba(255,255,255,.032) 0 1px,transparent 1px 15px),
    radial-gradient(640px 420px at 88% -8%,rgba(0,227,176,.12),transparent 70%);
}
main,header,footer{position:relative;z-index:1}
img{max-width:100%;display:block}
a{color:var(--brand-400);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out}
a:hover{color:var(--accent-500)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;letter-spacing:-.01em}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
:focus-visible{outline:3px solid rgba(0,227,176,.55);outline-offset:2px;border-radius:8px}
.container-xxl{width:100%;max-width:1280px;margin:0 auto;padding-inline:24px}
.weak{color:var(--ink-500)}

/* ============ 顶部工具条 & 导航 ============ */
.site-header{position:sticky;top:0;z-index:1050}
.topbar{background:var(--bg-800);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-300)}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:20px;max-width:1280px;margin:0 auto;padding:0 24px;height:36px;line-height:1.2}
.topbar-links{display:flex;align-items:center;gap:18px}
.topbar-links a{color:var(--accent-500);font-size:13px}
.topbar-links a:hover{color:#fff;text-decoration:underline}
.site-nav{background:rgba(7,12,20,.72);backdrop-filter:blur(12px) saturate(140%);border-bottom:1px solid var(--line);transition:background .24s ease-out,box-shadow .24s ease-out}
.nav-inner{position:relative;display:flex;align-items:center;gap:32px;height:72px;transition:height .24s ease-out}
.site-header.is-scrolled .site-nav{background:rgba(7,12,20,.88);box-shadow:0 10px 30px -22px rgba(0,0,0,.9)}
.site-header.is-scrolled .nav-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:18px;color:#04121A;background:linear-gradient(135deg,var(--brand-600),var(--accent-500));box-shadow:0 0 0 1px rgba(0,227,176,.28),0 8px 22px -10px rgba(29,91,255,.7)}
.logo-text{font-weight:800;font-size:17px;color:#fff;letter-spacing:.02em}
.logo:hover .logo-text{color:var(--accent-500)}
.nav-menu{display:flex;align-items:center;gap:4px;flex:1 1 auto}
.nav-item{position:relative}
.nav-link{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:999px;color:var(--ink-300);font-size:15px;font-weight:500;position:relative;white-space:nowrap}
.nav-link:hover,.nav-link:focus-visible{color:#fff;background:rgba(255,255,255,.06)}
.nav-link.is-active{color:#fff;font-weight:700}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500))}
.nav-toggle{display:none;width:42px;height:42px;margin-left:auto;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.04);color:var(--ink-100);font-size:17px;place-items:center;cursor:pointer}
.nav-toggle:hover{background:rgba(255,255,255,.09);border-color:var(--brand-400)}
.nav-collapse{display:flex;align-items:center;flex:1 1 auto}
.nav-call{display:inline-flex;align-items:center;gap:8px;margin-left:auto;padding:9px 16px;border-radius:999px;border:1px solid var(--line);color:var(--ink-100);font-size:14px;font-weight:600}
.nav-call:hover{border-color:var(--brand-400);background:rgba(255,255,255,.06);color:#fff}

/* Mega Menu */
.mega-panel{
  position:absolute;top:calc(100% + 12px);left:50%;
  width:760px;padding:26px;border-radius:20px;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);box-shadow:0 26px 60px -30px rgba(0,0,0,.95);
  display:grid;grid-template-columns:1.05fr 1fr;gap:26px;
  opacity:0;visibility:hidden;transform:translateX(-50%) translateY(-6px);
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s;
  z-index:1040;
}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-title{font-size:12px;letter-spacing:.14em;color:var(--ink-500);margin-bottom:12px;text-transform:uppercase}
.mega-list li + li{margin-top:2px}
.mega-list a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 12px;border-radius:10px;color:var(--ink-300);font-size:14px}
.mega-list a:hover{background:rgba(255,255,255,.06);color:#fff}
.mega-list a i{font-size:11px;color:var(--accent-500);opacity:0;transform:translateX(-4px);transition:opacity .18s ease-out,transform .18s ease-out}
.mega-list a:hover i{opacity:1;transform:translateX(0)}
.mega-cards{display:grid;gap:14px;align-content:start}
.mega-card{display:flex;gap:12px;padding:12px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.mega-card:hover{border-color:var(--brand-400);background:rgba(255,255,255,.07)}
.mega-card img{width:64px;height:64px;object-fit:cover;border-radius:10px;flex:0 0 auto}
.mega-card strong{display:block;font-size:14px;color:#fff;margin-bottom:4px}
.mega-card span{font-size:13px;color:var(--ink-300);line-height:1.6}
.mega-foot{grid-column:1/-1;border-top:1px solid var(--line);padding-top:14px;text-align:right;font-size:13px}
.mega-foot a{font-weight:600}

/* ============ 通用按钮 / 徽章 ============ */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border:0;border-radius:999px;cursor:pointer;
  font-size:15px;font-weight:800;color:#04121A;
  background:linear-gradient(135deg,var(--brand-600),var(--accent-500));
  box-shadow:0 0 0 1px rgba(0,227,176,.25),0 10px 30px -8px rgba(29,91,255,.55);
  transition:transform .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out;
}
.btn-glow:hover{color:#04121A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,227,176,.35),0 14px 36px -8px rgba(29,91,255,.72)}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(0,227,176,.25),0 6px 18px -8px rgba(29,91,255,.6)}
.btn-glow:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;cursor:pointer;
  background:transparent;border:1px solid rgba(255,255,255,.18);
  color:var(--ink-100);font-size:15px;font-weight:600;
  transition:background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out,transform .2s ease-out;
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--brand-400);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent-500);background-image:linear-gradient(var(--accent-500),var(--accent-500));background-repeat:no-repeat;background-size:0 1px;background-position:0 100%;padding-bottom:2px;transition:background-size .22s ease-out,color .18s ease-out}
.link-arrow:hover{color:#fff;background-size:100% 1px}
.badge-cat{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;color:var(--accent-500);background:rgba(29,91,255,.12);border:1px solid rgba(0,227,176,.3)}
.badge-promo{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:800;color:#1A0A00;background:var(--promo-500)}
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,36px);font-weight:700}
.section-head .sub{font-size:15px;color:var(--ink-300);margin-top:10px;max-width:640px}
.eyebrow{font-size:12px;letter-spacing:.16em;color:var(--accent-500);font-weight:700;margin-bottom:12px;display:block}

/* ============ 面包屑 ============ */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--accent-500)}
.crumb span.sep{opacity:.5}
.crumb .current{color:var(--ink-100)}

/* ============ 首屏 ============ */
.hero-training{padding:64px 0 96px}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center}
.hero-copy h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;letter-spacing:-.02em;line-height:1.22;margin:16px 0 18px}
.hero-copy .lead{font-size:17px;color:var(--ink-300);max-width:580px;margin-bottom:26px}
.hero-points{display:flex;gap:22px;flex-wrap:wrap;margin-bottom:30px}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-100);font-weight:600}
.hero-points i{color:var(--accent-500);font-size:14px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.stat-bar{display:flex;align-items:stretch;gap:0;margin-top:36px;border-top:1px solid var(--line);padding-top:22px;flex-wrap:wrap}
.stat-item{padding-right:28px;margin-right:28px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0;margin-right:0;padding-right:0}
.stat-item b{display:block;font-size:30px;font-weight:800;line-height:1.15;font-variant-numeric:tabular-nums;color:#fff}
.stat-item b em{font-style:normal;font-size:14px;font-weight:600;color:var(--ink-500);margin-left:4px}
.stat-item span{font-size:13px;color:var(--ink-500)}
.hero-visual{position:relative;padding-bottom:28px}
.img-main{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);background:linear-gradient(135deg,#0C1420,#111C2B)}
.img-main img{width:100%;aspect-ratio:4/3;object-fit:cover}
.img-sub{position:absolute;right:-14px;bottom:0;width:52%;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);box-shadow:0 20px 44px -22px rgba(0,0,0,.95);background:#0C1420}
.img-sub img{width:100%;aspect-ratio:4/3;object-fit:cover}
.glass-note{
  position:absolute;left:-18px;top:24px;max-width:248px;
  padding:16px 18px;border-radius:var(--r-md);
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);box-shadow:0 18px 40px -24px rgba(0,0,0,.9);
}
.glass-note strong{display:flex;align-items:center;gap:8px;font-size:14px;color:#fff;margin-bottom:6px}
.glass-note strong i{color:var(--accent-500)}
.glass-note span{font-size:13px;color:var(--ink-300);line-height:1.7}

/* ============ 分阶课程阶梯 ============ */
.ladder-section{padding:96px 0;background:linear-gradient(180deg,rgba(12,20,32,.9),rgba(7,12,20,0))}
.ladder-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:end}
.stage-card{
  position:relative;display:flex;flex-direction:column;
  padding:26px;border-radius:20px;border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform .22s ease-out,border-color .22s ease-out;
}
.stage-card:hover{transform:translateY(-4px);border-color:rgba(76,141,255,.5)}
.stage-card:nth-child(1){min-height:340px}
.stage-card:nth-child(2){min-height:400px;border-color:rgba(76,141,255,.32)}
.stage-card:nth-child(3){min-height:460px;border-color:rgba(0,227,176,.4);background:linear-gradient(180deg,rgba(0,227,176,.06),rgba(17,28,43,1) 55%)}
.stage-num{font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--accent-500);margin-bottom:14px}
.stage-card:nth-child(3) .stage-num{color:var(--promo-500)}
.stage-card h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:12px}
.stage-card .stage-for{font-size:13px;color:var(--ink-500);margin-bottom:16px}
.stage-thumb{border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);margin-bottom:18px}
.stage-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.stage-list{margin-bottom:22px}
.stage-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-300);padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.08)}
.stage-list li:last-child{border-bottom:0}
.stage-list i{color:var(--accent-500);font-size:12px;margin-top:7px}
.stage-card .stage-cta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
.stage-meta{font-size:13px;color:var(--ink-500)}

/* ============ 师资横滑 ============ */
.coach-section{padding:96px 0}
.coach-wrap{position:relative}
.coach-wrap::after{content:"";position:absolute;top:0;right:0;bottom:16px;width:80px;pointer-events:none;background:linear-gradient(90deg,rgba(7,12,20,0),var(--bg-900))}
.coach-track{display:flex;gap:24px;overflow-x:auto;padding:6px 0 18px;scroll-snap-type:x mandatory;scrollbar-width:thin}
.coach-track::-webkit-scrollbar{height:6px}
.coach-track::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:999px}
.coach-card{
  flex:0 0 30%;min-width:280px;scroll-snap-align:start;
  border-radius:var(--r-md);border:1px solid var(--line);background:var(--surface);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .22s ease-out,border-color .22s ease-out;
}
.coach-card:hover{transform:translateY(-4px);border-color:var(--brand-400)}
.coach-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.coach-body{padding:20px}
.coach-body h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:8px}
.coach-body p{font-size:14px;color:var(--ink-300)}
.coach-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.tag{display:inline-flex;padding:4px 10px;border-radius:999px;font-size:12px;color:var(--ink-300);border:1px solid var(--line);background:rgba(255,255,255,.03)}

/* ============ 成长路径 ============ */
.path-section{padding:96px 0;background:linear-gradient(180deg,rgba(12,20,32,.9),rgba(7,12,20,0))}
.path-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.path-item{position:relative;padding:26px 22px;border-radius:var(--r-md);border:1px solid var(--line);background:rgba(255,255,255,.025)}
.path-item::before{content:"";position:absolute;left:22px;right:22px;top:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500));opacity:.7}
.path-num{font-size:34px;font-weight:800;color:rgba(255,255,255,.14);font-variant-numeric:tabular-nums;line-height:1;margin-bottom:14px}
.path-item h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:8px}
.path-item p{font-size:14px;color:var(--ink-300)}

/* ============ 报名表单 ============ */
.signup-section{padding:96px 0}
.glass-panel{
  padding:40px;border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);box-shadow:0 26px 60px -34px rgba(0,0,0,.95);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;font-weight:600;color:var(--ink-100)}
.field label .req{color:var(--promo-500);margin-left:4px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 14px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--ink-100);font-family:inherit;font-size:15px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out;
}
.field textarea{min-height:96px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-500)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(0,227,176,.18);background:rgba(255,255,255,.06)}
.field select option{background:#0C1420;color:var(--ink-100)}
.form-note{font-size:12px;color:var(--ink-500);margin-top:14px}
.form-hint{font-size:13px;color:var(--accent-500);margin-top:12px;min-height:20px}
.form-actions{margin-top:26px}

/* ============ FAQ ============ */
.faq-section{padding:96px 0}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px 22px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-100);font-family:inherit;
  transition:color .18s ease-out,padding-left .2s ease-out;
}
.faq-q i{flex:0 0 auto;color:var(--accent-500);font-size:15px;transition:transform .22s ease-out}
.faq-q:hover{color:#fff}
.faq-item.is-open .faq-q{padding-left:14px;color:#fff;box-shadow:inset 3px 0 0 var(--accent-500)}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out;background:rgba(255,255,255,.02)}
.faq-a-inner{padding:0 14px 24px 14px;font-size:15px;line-height:1.85;color:var(--ink-300)}
.faq-item.is-open .faq-a{max-height:360px}

/* ============ CTA 带 ============ */
.cta-band{padding:0 0 96px}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:32px 36px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(29,91,255,.18),rgba(7,12,20,.9) 58%,rgba(255,122,47,.10));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.cta-inner h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;margin-bottom:8px}
.cta-inner p{font-size:14px;color:var(--ink-300)}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--bg-800);border-top:1px solid var(--line);padding:64px 0 0;margin-top:24px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500))}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.foot-brand p{font-size:14px;color:var(--ink-300);margin-top:16px;max-width:340px}
.foot-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.foot-list li{margin-bottom:10px}
.foot-list a{font-size:14px;color:var(--ink-300)}
.foot-list a:hover{color:var(--accent-500)}
.foot-contact li{display:flex;gap:10px;font-size:14px;color:var(--ink-300);margin-bottom:12px}
.foot-contact i{color:var(--accent-500);margin-top:6px;font-size:13px}
.foot-contact i:hover{text-shadow:0 0 12px rgba(0,227,176,.8)}
.copyright{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);padding:22px 0 28px;font-size:13px;color:var(--ink-500)}
.copyright a{color:var(--ink-500)}
.copyright a:hover{color:var(--accent-500)}

/* 返回顶部 */
#toTop{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;border:1px solid rgba(0,227,176,.35);
  background:rgba(17,28,43,.92);color:var(--accent-500);cursor:pointer;
  box-shadow:0 0 22px -6px rgba(0,227,176,.55);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease-out,transform .22s ease-out,visibility .22s;z-index:1040;
}
#toTop.is-show{opacity:1;visibility:visible;transform:translateY(0)}
#toTop:hover{background:rgba(29,91,255,.28);color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-grid{gap:40px}
  .coach-card{flex:0 0 44%}
}
@media (max-width:991.98px){
  .container-xxl{padding-inline:20px}
  .topbar-links .weak{display:none}
  .nav-toggle{display:grid}
  .nav-collapse{
    display:none;position:absolute;top:100%;left:-20px;right:-20px;
    background:rgba(7,12,20,.97);backdrop-filter:blur(12px);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:12px 20px 22px;max-height:calc(100vh - 110px);overflow-y:auto;
  }
  .nav-collapse.is-open{display:block}
  .nav-menu{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{width:100%;justify-content:space-between;padding:14px 12px;border-radius:10px;border-bottom:1px solid rgba(255,255,255,.07);font-size:15px}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:rgba(29,91,255,.14);color:#fff}
  .has-mega .mega-panel{
    position:static;transform:none;opacity:1;visibility:visible;width:auto;
    background:transparent;backdrop-filter:none;border:0;box-shadow:none;
    padding:6px 0 10px 10px;grid-template-columns:1fr;gap:14px;
  }
  .mega-list a{padding:9px 8px}
  .nav-call{display:none}
  .section,.ladder-section,.coach-section,.path-section,.signup-section,.faq-section{padding:72px 0}
  .hero-training{padding:40px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{padding-bottom:20px}
  .img-sub{position:static;width:100%;margin-top:16px;right:auto;bottom:auto}
  .glass-note{position:static;max-width:none;margin-bottom:16px}
  .ladder-grid{grid-template-columns:1fr;align-items:stretch}
  .stage-card,.stage-card:nth-child(1),.stage-card:nth-child(2),.stage-card:nth-child(3){min-height:0}
  .path-grid{grid-template-columns:1fr 1fr}
  .glass-panel{padding:28px}
  .form-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .coach-wrap::after{display:none}
  .coach-card{flex:0 0 68%}
}
@media (max-width:575.98px){
  .topbar-inner{font-size:12px;height:auto;padding:8px 20px;display:block;text-align:center}
  .topbar-links{justify-content:center;margin-top:4px}
  .hero-copy h1{font-size:29px}
  .stat-item{padding-right:18px;margin-right:18px}
  .stat-item b{font-size:24px}
  .stat-item:nth-child(3){border-right:0;margin-right:0;padding-right:0}
  .path-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .coach-card{flex:0 0 84%}
  .cta-inner{padding:24px}
  .glass-panel{padding:22px}
  .section-head{margin-bottom:32px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-900:#070C14;
  --bg-800:#0C1420;
  --surface:#111C2B;
  --glass:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --brand-600:#1D5BFF;
  --brand-400:#4C8DFF;
  --accent-500:#00E3B0;
  --promo-500:#FF7A2F;
  --ink-100:#EAF1FF;
  --ink-300:#9FB0C9;
  --ink-500:#6B7C94;
  --r-xs:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-glow:0 0 0 1px rgba(0,227,176,.25), 0 10px 30px -8px rgba(29,91,255,.55);
  --pad-8:8px; --pad-16:16px; --pad-24:24px; --pad-32:32px; --pad-48:48px; --pad-64:64px; --pad-96:96px;

  --bs-body-bg:var(--bg-900);
  --bs-body-color:var(--ink-100);
  --bs-primary:var(--brand-600);
  --bs-border-color:var(--line);
  --bs-link-color:var(--accent-500);
  --bs-link-hover-color:#4CF5CC;
  --bs-card-bg:var(--surface);
  --bs-card-border-color:var(--line);
  --bs-btn-border-radius:var(--r-xs);
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-100);
  background:
    radial-gradient(900px 520px at 88% -6%, rgba(0,227,176,.10), transparent 62%),
    radial-gradient(680px 420px at 2% 46%, rgba(29,91,255,.10), transparent 60%),
    repeating-linear-gradient(115deg, rgba(255,255,255,.022) 0 1px, transparent 1px 8px),
    var(--bg-900);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--accent-500);text-decoration:none;transition:color .2s ease-out,opacity .2s ease-out;}
a:hover{color:#4CF5CC;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;}
p{margin:0 0 1em;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(0,227,176,.55);outline-offset:2px;border-radius:6px;}

.container-xxl{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 24px;
}
.weak{color:var(--ink-500);}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 顶部工具条 ============ */
.topbar{
  background:var(--bg-800);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--ink-300);
}
.topbar-inner{
  max-width:1280px;margin:0 auto;padding:0 24px;
  min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.topbar-links{display:flex;align-items:center;gap:18px;white-space:nowrap;}
.topbar-links a{color:var(--ink-300);}
.topbar-links a:hover{color:var(--accent-500);}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;}
.site-nav{
  height:72px;
  background:rgba(7,12,20,.72);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:height .2s ease-out,background .2s ease-out;
}
.site-header.is-scrolled .site-nav{
  height:60px;
  background:rgba(7,12,20,.88);
  backdrop-filter:blur(12px);
}
.nav-inner{height:100%;display:flex;align-items:center;gap:28px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-100);flex:0 0 auto;}
.logo:hover{color:var(--ink-100);}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--accent-500));
  color:#04121A;font-weight:800;font-size:17px;
  box-shadow:0 0 0 1px rgba(0,227,176,.25);
}
.logo-text{font-weight:800;font-size:18px;letter-spacing:.01em;}
.nav-toggle{
  display:none;margin-left:auto;
  width:42px;height:38px;border-radius:var(--r-xs);
  background:transparent;border:1px solid var(--line);color:var(--ink-100);
  cursor:pointer;transition:background .2s ease-out,border-color .2s ease-out;
}
.nav-toggle:hover{background:rgba(255,255,255,.06);border-color:var(--brand-400);}
.nav-collapse{display:flex;align-items:center;gap:24px;margin-left:auto;}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-item{position:relative;}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:var(--r-xs);
  color:var(--ink-300);font-size:15px;font-weight:500;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-link:hover{color:var(--ink-100);background:rgba(255,255,255,.05);}
.nav-link.is-active{color:var(--ink-100);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500));
}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--r-pill);
  font-size:14px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--brand-400),var(--accent-500));
  box-shadow:0 0 0 1px rgba(0,227,176,.25), 0 10px 26px -12px rgba(29,91,255,.75);
  transition:transform .18s ease-out,filter .18s ease-out,box-shadow .18s ease-out;
}
.nav-cta:hover{color:#04121A;transform:translateY(-2px);filter:brightness(1.08);}

/* Mega Menu */
.mega-panel{
  position:absolute;top:calc(100% + 10px);left:0;
  width:780px;max-width:calc(100vw - 48px);
  padding:22px;
  display:grid;grid-template-columns:1.05fr 1fr;gap:22px;
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s;
}
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:12px;letter-spacing:.12em;color:var(--ink-500);margin-bottom:12px;text-transform:uppercase;}
.mega-list li + li{margin-top:2px;}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 10px;border-radius:10px;color:var(--ink-300);font-size:14.5px;
  transition:background .18s ease-out,color .18s ease-out,padding-left .18s ease-out;
}
.mega-list a i{font-size:11px;opacity:0;transform:translateX(-4px);transition:.18s ease-out;}
.mega-list a:hover{background:rgba(255,255,255,.07);color:var(--ink-100);padding-left:14px;}
.mega-list a:hover i{opacity:1;transform:translateX(0);color:var(--accent-500);}
.mega-cards{display:grid;gap:12px;}
.mega-card{
  display:flex;gap:12px;align-items:center;
  padding:12px;border-radius:14px;
  background:var(--surface);border:1px solid var(--line);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.mega-card:hover{transform:translateY(-3px);border-color:var(--brand-400);}
.mega-card img{width:74px;height:56px;object-fit:cover;border-radius:10px;flex:0 0 auto;}
.mega-card strong{display:block;color:var(--ink-100);font-size:14.5px;font-weight:700;margin-bottom:2px;}
.mega-card span{display:block;color:var(--ink-500);font-size:12.5px;line-height:1.6;}

/* ============ 通用组件 ============ */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border:0;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;color:#04121A;cursor:pointer;
  background:linear-gradient(135deg,var(--brand-400),var(--accent-500));
  box-shadow:var(--shadow-glow);
  transition:transform .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out;
}
.btn-glow:hover{color:#04121A;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(0,227,176,.35), 0 16px 36px -10px rgba(29,91,255,.7);}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(0,227,176,.3), 0 8px 20px -12px rgba(29,91,255,.8);}
.btn-glow:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 24px;border-radius:var(--r-pill);
  background:transparent;border:1px solid rgba(255,255,255,.18);
  color:var(--ink-100);font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--brand-400);color:var(--ink-100);transform:translateY(-2px);}
.link-more{
  color:var(--accent-500);font-size:14.5px;font-weight:600;
  background-image:linear-gradient(var(--accent-500),var(--accent-500));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
  transition:background-size .22s ease-out,color .2s ease-out;
}
.link-more:hover{background-size:100% 1px;color:#4CF5CC;}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--accent-500);
  background:rgba(29,91,255,.12);border:1px solid rgba(0,227,176,.3);
}
.badge-hot{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;color:#241000;background:var(--promo-500);
}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{margin-bottom:44px;max-width:720px;}
.section-head h2{font-size:clamp(24px,2.6vw,36px);font-weight:700;}
.section-head p{margin-top:14px;color:var(--ink-300);font-size:16px;margin-bottom:0;}
.eyebrow{font-size:12.5px;letter-spacing:.14em;color:var(--accent-500);font-weight:700;margin-bottom:12px;display:block;}

/* 面包屑 */
.crumb{font-size:13px;color:var(--ink-500);display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:16px;}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--accent-500);}
.crumb .sep{opacity:.6;}
.crumb .current{color:var(--ink-100);}

/* ============ 首屏图墙 ============ */
.page-hero{
  position:relative;
  padding:56px 0 64px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(100deg, rgba(7,12,20,.94) 0%, rgba(7,12,20,.78) 42%, rgba(7,12,20,.5) 72%, rgba(7,12,20,.86) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover,cover;
  background-position:center,center;
  z-index:0;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(560px 320px at 12% 88%, rgba(0,227,176,.13), transparent 66%);
}
.page-hero .container-xxl{position:relative;z-index:1;}
.hero-wall-head h1{
  font-size:clamp(30px,4.6vw,56px);font-weight:800;letter-spacing:-.02em;
  max-width:16em;
}
.hero-wall-head h1 em{font-style:normal;background:linear-gradient(120deg,var(--accent-500),var(--brand-400));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{margin-top:18px;color:var(--ink-300);font-size:17px;max-width:620px;}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

.wall-grid{
  display:grid;grid-template-columns:repeat(12,1fr);
  gap:16px;margin-top:48px;align-items:end;
}
.wall-item{
  position:relative;overflow:hidden;margin:0;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(140deg,#0E1A29,#0A121D);
  box-shadow:var(--shadow-card);
}
.wall-item img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.wall-item:hover img{transform:scale(1.04);}
.wall-item::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,.05) 40%,rgba(7,12,20,.72) 100%);
  pointer-events:none;
}
.wall-cap{
  position:absolute;left:16px;bottom:14px;z-index:2;
  font-size:14px;font-weight:700;color:var(--ink-100);
  display:flex;align-items:center;gap:8px;
}
.wall-cap i{color:var(--accent-500);font-size:12px;}
.wall-a{grid-column:span 7;aspect-ratio:4/3;}
.wall-b{grid-column:span 5;aspect-ratio:1/1;}
.wall-c{grid-column:span 5;aspect-ratio:1/1;}
.wall-d{grid-column:span 7;aspect-ratio:4/3;}

.hero-stats{
  margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.hero-stats .stat{padding:22px 24px;border-left:1px solid var(--line);}
.hero-stats .stat:first-child{border-left:0;}
.stat .stat-num{font-size:clamp(26px,2.6vw,36px);font-weight:800;color:var(--ink-100);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.stat .stat-num small{font-size:14px;font-weight:600;color:var(--ink-500);margin-left:4px;}
.stat .stat-label{font-size:13px;color:var(--ink-500);margin-top:4px;}

/* ============ 规格参数 ============ */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.spec-col{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px 24px 12px;box-shadow:var(--shadow-card);
}
.spec-col h3{
  font-size:18px;font-weight:700;padding:16px 0 14px;
  display:flex;align-items:center;gap:10px;
}
.spec-col h3 i{color:var(--accent-500);font-size:15px;}
.spec-row{
  display:flex;justify-content:space-between;gap:20px;
  padding:14px 0;border-top:1px solid var(--line);font-size:15px;
}
.spec-label{color:var(--ink-500);flex:0 0 34%;}
.spec-value{color:var(--ink-100);text-align:right;flex:1;}
.spec-note{margin-top:14px;font-size:13px;color:var(--ink-500);}

/* ============ 流程 ============ */
.flow-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.flow-step{
  position:relative;padding:26px 24px 26px;
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.flow-step:hover{transform:translateY(-4px);border-color:var(--brand-400);}
.flow-step + .flow-step::before{
  content:"\f061";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:-18px;top:50%;transform:translateY(-50%);
  color:var(--ink-500);font-size:13px;
}
.flow-num{
  width:44px;height:44px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:19px;font-variant-numeric:tabular-nums;
  color:#04121A;background:linear-gradient(135deg,var(--brand-400),var(--accent-500));
  box-shadow:0 0 0 1px rgba(0,227,176,.25);
}
.flow-step h3{margin-top:16px;font-size:18px;font-weight:700;}
.flow-step p{margin:10px 0 0;font-size:14.5px;color:var(--ink-300);line-height:1.8;}

/* ============ 服务保障 ============ */
.assure-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  background:rgba(255,255,255,.02);
}
.assure-item{padding:26px 24px;border-left:1px solid var(--line);}
.assure-item:first-child{border-left:0;}
.assure-item i{font-size:20px;color:var(--accent-500);}
.assure-item h3{margin-top:14px;font-size:16.5px;font-weight:700;}
.assure-item p{margin:8px 0 0;font-size:14px;color:var(--ink-300);line-height:1.78;}

/* ============ 咨询表单 ============ */
.inquiry-grid{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;align-items:start;
}
.inquiry-aside h2{font-size:clamp(24px,2.4vw,32px);font-weight:700;}
.inquiry-aside p{color:var(--ink-300);margin-top:16px;font-size:15.5px;}
.contact-rows{margin-top:26px;display:grid;gap:14px;}
.contact-row{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;border-radius:var(--r-md);
  background:var(--surface);border:1px solid var(--line);
}
.contact-row i{color:var(--accent-500);margin-top:4px;}
.contact-row strong{display:block;font-size:15px;font-weight:700;}
.contact-row span{font-size:13.5px;color:var(--ink-500);}
.inquiry-form{
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-card);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;color:var(--ink-300);font-weight:600;}
.field label .req{color:var(--promo-500);margin-left:4px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);color:var(--ink-100);
  font-size:15px;transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.field textarea{min-height:104px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-500);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(0,227,176,.22);
  background:rgba(255,255,255,.06);
}
.field select option{background:var(--bg-800);color:var(--ink-100);}
.form-foot{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.form-note{font-size:12px;color:var(--ink-500);max-width:320px;line-height:1.7;}
.form-tip{min-height:20px;font-size:13.5px;color:var(--promo-500);margin-top:12px;}
.form-tip.is-ok{color:var(--accent-500);}

/* ============ FAQ ============ */
.faq-wrap{
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px 28px;box-shadow:var(--shadow-card);
}
.faq-item{border-top:1px solid var(--line);}
.faq-item:first-child{border-top:0;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink-100);
  transition:color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent-500);}
.faq-item summary i{
  flex:0 0 auto;color:var(--accent-500);font-size:14px;
  transition:transform .22s ease-out;
}
.faq-item[open] summary i{transform:rotate(45deg);}
.faq-item[open] summary{color:var(--accent-500);}
.faq-body{
  padding:0 0 22px 18px;border-left:3px solid var(--accent-500);
  margin-bottom:6px;
}
.faq-body p{margin:0;font-size:15px;color:var(--ink-300);line-height:1.85;}

/* ============ CTA 带 ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:28px 32px;border-radius:var(--r-lg);
  background:linear-gradient(115deg,rgba(29,91,255,.22),rgba(0,227,176,.10) 62%,rgba(255,122,47,.14));
  border:1px solid var(--line);
}
.cta-band h2{font-size:clamp(20px,2vw,26px);font-weight:700;}
.cta-band p{margin:8px 0 0;color:var(--ink-300);font-size:14.5px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  border-top:1px solid transparent;
  background:linear-gradient(var(--bg-900),var(--bg-800));
  position:relative;
  padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent-500),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;}
.foot-brand p{margin-top:16px;color:var(--ink-500);font-size:14px;line-height:1.85;max-width:320px;}
.foot-title{font-size:13px;letter-spacing:.1em;color:var(--ink-500);margin-bottom:16px;text-transform:uppercase;}
.foot-list li + li{margin-top:10px;}
.foot-list a{color:var(--ink-300);font-size:14.5px;}
.foot-list a:hover{color:var(--accent-500);}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;color:var(--ink-300);font-size:14px;line-height:1.75;}
.foot-contact li + li{margin-top:12px;}
.foot-contact i{color:var(--accent-500);margin-top:5px;font-size:13px;transition:text-shadow .2s ease-out;}
.foot-contact li:hover i{text-shadow:0 0 10px rgba(0,227,176,.9);}
.copyright{
  margin-top:44px;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(--ink-500);
}
.copyright a{color:var(--ink-500);}
.copyright a:hover{color:var(--accent-500);}

/* 返回顶部 */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);
  background:rgba(17,28,43,.9);color:var(--ink-100);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 1px rgba(0,227,176,.2), 0 12px 30px -12px rgba(29,91,255,.7);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease-out,transform .22s ease-out,visibility .22s;
}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{color:var(--accent-500);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .section{padding:80px 0;}
  .mega-panel{width:640px;}
  .hero-stats{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:991.98px){
  .topbar-inner{justify-content:center;}
  .topbar-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-collapse{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:8px 16px 18px;
    background:rgba(7,12,20,.97);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    max-height:calc(100vh - 110px);overflow-y:auto;
    display:none;
  }
  .nav-collapse.is-open{display:flex;}
  .nav-menu{flex-direction:column;align-items:stretch;gap:0;}
  .nav-item{border-bottom:1px solid var(--line);}
  .nav-item:last-child{border-bottom:0;}
  .nav-link{justify-content:space-between;padding:15px 4px;font-size:16px;width:100%;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{color:var(--accent-500);}
  .has-mega.open > .nav-link i{transform:rotate(180deg);}
  .has-mega > .nav-link i{transition:transform .2s ease-out;}
  .mega-panel{
    position:static;width:auto;max-width:none;opacity:1;visibility:visible;transform:none;
    display:none;grid-template-columns:1fr;gap:16px;padding:14px 0 20px;
    background:rgba(255,255,255,.04);backdrop-filter:blur(6px);
    border:0;border-radius:0;box-shadow:none;
  }
  .has-mega.open .mega-panel{display:grid;}
  .mega-cards{grid-template-columns:1fr;}
  .nav-cta{margin:16px 0 0;width:100%;justify-content:center;}
  .spec-grid{grid-template-columns:1fr;}
  .flow-row{grid-template-columns:1fr;}
  .flow-step + .flow-step::before{display:none;}
  .assure-row{grid-template-columns:1fr 1fr;}
  .assure-item{border-left:1px solid var(--line);border-top:1px solid var(--line);}
  .assure-item:nth-child(1),.assure-item:nth-child(2){border-top:0;}
  .assure-item:nth-child(odd){border-left:0;}
  .inquiry-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .site-footer{margin-top:72px;}
}
@media (max-width:767.98px){
  .container-xxl{padding:0 18px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .page-hero{padding:36px 0 48px;}
  .wall-grid{gap:12px;}
  .wall-a,.wall-b,.wall-c,.wall-d{grid-column:span 12;aspect-ratio:4/3;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .hero-stats .stat{border-left:1px solid var(--line);border-top:1px solid var(--line);}
  .hero-stats .stat:nth-child(1),.hero-stats .stat:nth-child(2){border-top:0;}
  .hero-stats .stat:nth-child(odd){border-left:0;}
  .form-grid{grid-template-columns:1fr;}
  .inquiry-form{padding:20px;}
  .faq-wrap{padding:4px 18px;}
  .cta-band{padding:22px 20px;}
  .foot-grid{grid-template-columns:1fr;}
  .copyright{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%;}
  .assure-row{grid-template-columns:1fr;}
  .assure-item{border-left:0 !important;border-top:1px solid var(--line);}
  .assure-item:first-child{border-top:0;}
  .spec-col{padding:6px 18px 10px;}
  .spec-row{flex-direction:column;gap:6px;}
  .spec-value{text-align:left;}
  .form-foot{flex-direction:column;align-items:stretch;}
  .form-foot .btn-glow{width:100%;}
  .back-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .wall-item:hover img{transform:none;}
}