/* roulang page: index */
:root{
  --c-deep:#0F0D22;
  --c-brand:#2A2356;
  --c-brand-soft:#EDEAF7;
  --c-accent:#FF6B3D;
  --c-accent-dark:#E4522A;
  --c-mint:#4FD1C5;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-ink:#1C1A2E;
  --c-ink-2:#5B5872;
  --c-line:#E7E3DD;
  --r-card:18px;
  --r-btn:999px;
  --r-input:12px;
  --r-chip:8px;
  --sh-1:0 6px 20px rgba(20,18,43,.06);
  --sh-2:0 14px 34px rgba(20,18,43,.12);
  --container:1200px;
  --gap:28px;
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-accent)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--c-mint);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--section-y) 0}
.section-alt{background:var(--c-surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:8px;color:var(--c-ink-2);font-size:15px;max-width:640px}
.head-link{font-size:14px;font-weight:600;white-space:nowrap;color:var(--c-brand)}
.head-link:hover{color:var(--c-accent)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-brand);background:var(--c-brand-soft);border-radius:var(--r-chip);padding:6px 12px;margin-bottom:16px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-mint)}
.starfield{position:relative;overflow:hidden}
.starfield::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    radial-gradient(1.6px 1.6px at 24px 32px,rgba(255,255,255,.65),transparent),
    radial-gradient(1.4px 1.4px at 138px 88px,rgba(255,255,255,.4),transparent),
    radial-gradient(1.2px 1.2px at 212px 46px,rgba(79,209,197,.7),transparent),
    radial-gradient(1.2px 1.2px at 76px 142px,rgba(255,107,61,.6),transparent);
  background-size:260px 180px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border-radius:var(--r-btn);
  border:1.5px solid transparent;background:transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  min-height:48px;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,61,.28)}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--c-brand);color:var(--c-brand)}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand)}
.btn-outline-light{border-color:rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-block{width:100%}
.btn-sm{padding:11px 20px;min-height:42px;font-size:14px}
.btn[disabled]{opacity:.45;pointer-events:none}

/* ============ 导航 ============ */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:200;pointer-events:none}
.nav{
  pointer-events:auto;
  width:min(1160px,calc(100% - 32px));
  margin:0 auto;
  display:flex;align-items:center;gap:20px;
  padding:10px 12px 10px 18px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.86);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:background .2s ease,box-shadow .2s ease;
}
.nav.scrolled{background:rgba(255,255,255,.96);box-shadow:var(--sh-2)}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:34px;height:34px;flex-shrink:0;border-radius:11px;background:linear-gradient(140deg,var(--c-brand),#4B3F8F);display:grid;place-items:center}
.logo-mark svg{width:20px;height:20px;display:block}
.logo-text{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap}
.logo:hover .logo-text{color:var(--c-brand)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1}
.nav-link{display:inline-flex;align-items:center;padding:10px 14px;border-radius:var(--r-btn);font-size:15px;font-weight:600;color:var(--c-ink-2)}
.nav-link:hover{color:var(--c-brand);background:var(--c-brand-soft)}
.nav-link.active{color:var(--c-brand);background:var(--c-brand-soft)}
.nav-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:var(--c-surface);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ Hero ============ */
.hero{position:relative;background:var(--c-deep);color:#fff;padding:158px 0 96px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.34}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(170deg,rgba(15,13,34,.74) 0%,rgba(15,13,34,.92) 62%,rgba(15,13,34,.98) 100%)}
.hero .starfield-layer{position:absolute;inset:0;z-index:1}
.hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#E9E6FF;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-chip);padding:7px 14px;margin-bottom:22px}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-mint)}
.hero h1{font-size:clamp(30px,4.4vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:#fff}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.78);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{display:flex;flex-wrap:wrap;gap:26px;margin-top:38px;padding-top:28px;border-top:1px solid rgba(255,255,255,.12)}
.hero-point{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:600;color:rgba(255,255,255,.88)}
.hero-point svg{width:18px;height:18px;flex-shrink:0;color:var(--c-mint)}
.hero-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:28px}
.hero-card h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:6px}
.hero-card p{font-size:13.5px;color:rgba(255,255,255,.62);margin-bottom:18px}
.hero-list li{display:flex;align-items:center;gap:12px;padding:14px 0;border-top:1px solid rgba(255,255,255,.1);font-size:14.5px;color:rgba(255,255,255,.86)}
.hero-list li:first-child{border-top:0}
.hero-list .dot{width:8px;height:8px;border-radius:50%;background:var(--c-mint);flex-shrink:0}
.hero-list .arrow{margin-left:auto;color:var(--c-accent);font-weight:700}

/* ============ 登录引导条 ============ */
.login-band{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:32px;margin-top:-56px;position:relative;z-index:5}
.login-band-grid{display:grid;grid-template-columns:1fr 1fr auto;gap:18px;align-items:end}
.field{display:flex;flex-direction:column;gap:8px;min-width:0}
.field label{font-size:14px;font-weight:600;color:var(--c-ink)}
.field input,.field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid var(--c-line);background:var(--c-bg);font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{height:130px;padding:14px 16px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(91,88,114,.6)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-brand);background:#fff;box-shadow:0 0 0 3px rgba(42,35,86,.1)}
.field.is-error input{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(255,107,61,.12)}
.field.is-ok input{border-color:var(--c-mint);box-shadow:0 0 0 3px rgba(79,209,197,.14)}
.field-hint{font-size:12.5px;line-height:1.6;color:var(--c-ink-2)}
.field-hint.err{color:var(--c-accent)}
.field-hint.ok{color:#2F9E90}
.login-band-foot{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);font-size:13.5px;color:var(--c-ink-2)}
.login-band-foot a{font-weight:600}

/* ============ 优惠阶梯 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.ladder{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);align-items:end}
.ladder-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px 24px 24px 30px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.ladder-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.ladder-card::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:6px;border-radius:6px}
.ladder-card:nth-child(1){min-height:250px}
.ladder-card:nth-child(1)::before{background:linear-gradient(180deg,var(--c-mint),rgba(79,209,197,.35))}
.ladder-card:nth-child(2){min-height:290px}
.ladder-card:nth-child(2)::before{background:linear-gradient(180deg,var(--c-mint),var(--c-accent))}
.ladder-card:nth-child(3){min-height:330px}
.ladder-card:nth-child(3)::before{background:linear-gradient(180deg,var(--c-accent),var(--c-brand))}
.ladder-stage{font-size:12.5px;font-weight:600;color:var(--c-ink-2);letter-spacing:.04em}
.ladder-card h3{font-size:19px;font-weight:700;margin:8px 0 16px;color:var(--c-ink)}
.ladder-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--c-ink-2);padding:6px 0}
.ladder-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-mint);margin-top:11px;flex-shrink:0}
.ladder-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:var(--c-brand)}
.ladder-link:hover{color:var(--c-accent)}
.ladder-link::after{content:"→";transition:transform .18s ease}
.ladder-link:hover::after{transform:translateX(4px)}

/* ============ 套餐对比 ============ */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plan{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.plan-head{padding:26px 24px 20px;border-bottom:1px solid var(--c-line)}
.plan-name{font-size:18px;font-weight:700}
.plan-key{margin-top:6px;font-size:13.5px;color:var(--c-ink-2)}
.plan-price{margin-top:16px;font-size:22px;font-weight:700;color:var(--c-brand);font-variant-numeric:tabular-nums}
.plan-price small{font-size:13px;font-weight:500;color:var(--c-ink-2);margin-left:6px}
.plan-rows{flex:1}
.plan-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 24px;font-size:14px;border-bottom:1px solid var(--c-line)}
.plan-row:nth-child(odd){background:var(--c-bg)}
.plan-row .v{font-weight:600;color:var(--c-ink);text-align:right}
.plan-row .no{color:var(--c-ink-2);font-weight:500}
.plan-foot{padding:20px 24px 26px}
.plan.featured{border:2px solid var(--c-accent);box-shadow:var(--sh-2)}
.plan.featured .plan-head{background:var(--c-brand-soft)}
.plan-badge{position:absolute;top:14px;right:14px;background:var(--c-accent);color:#fff;font-size:12px;font-weight:600;padding:5px 12px;border-radius:var(--r-chip)}

/* ============ 限时入口 ============ */
.deadline{background:var(--c-deep);color:#fff;border-radius:26px;padding:48px;position:relative;overflow:hidden}
.deadline-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.deadline h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.35;color:#fff}
.deadline p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.7);max-width:480px}
.timer{display:flex;gap:14px;justify-content:flex-start}
.timer-cell{flex:1;min-width:0;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:16px 10px;text-align:center;min-height:84px;display:flex;flex-direction:column;justify-content:center}
.timer-num{font-size:26px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;line-height:1.2}
.timer-label{margin-top:4px;font-size:12.5px;color:rgba(255,255,255,.62)}
.deadline-actions{margin-top:26px}

/* ============ 资讯列表 ============ */
.news-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;min-width:0;
  transition:transform .18s ease,box-shadow .18s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--c-brand-soft)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;min-width:0}
.chip{display:inline-flex;align-items:center;align-self:flex-start;font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:var(--r-chip);background:rgba(79,209,197,.14);color:#22786F}
.news-title{margin-top:12px;font-size:17px;font-weight:600;line-height:1.5}
.news-title a{color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-title a{color:var(--c-brand)}
.news-sum{margin-top:10px;font-size:14px;line-height:1.7;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-ink-2)}
.news-foot .more{display:inline-flex;align-items:center;gap:4px;font-weight:600}
.news-foot .more::after{content:"→";transition:transform .18s ease}
.news-card:hover .news-foot .more::after{transform:translateX(4px)}
.empty-state{
  border:1.5px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-surface);
  padding:56px 24px;text-align:center;
}
.empty-state .star{width:40px;height:40px;margin:0 auto 14px;border-radius:50%;background:var(--c-brand-soft);display:grid;place-items:center;color:var(--c-brand);font-size:18px}
.empty-state p{color:var(--c-ink-2);font-size:15px;margin-bottom:18px}

/* ============ 咨询表单 ============ */
.contact-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;align-items:start}
.contact-side h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.35}
.contact-side p{margin-top:14px;color:var(--c-ink-2);font-size:15px}
.contact-points{margin-top:26px}
.contact-points li{display:flex;align-items:flex-start;gap:10px;padding:9px 0;font-size:14.5px;color:var(--c-ink-2);min-height:44px}
.contact-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-mint);margin-top:12px;flex-shrink:0}
.contact-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:40px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}
.form-actions{margin-top:26px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-msg{font-size:13.5px;color:#2F9E90;display:none}
.form-msg.show{display:block}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:22px 16px;font-size:17px;font-weight:600;color:var(--c-ink);
  transition:background .18s ease,color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--c-bg);color:var(--c-brand)}
.faq-mark{margin-left:auto;width:26px;height:26px;flex-shrink:0;border-radius:50%;background:var(--c-brand-soft);color:var(--c-brand);display:grid;place-items:center;font-size:16px;font-weight:600;transition:transform .2s ease,background .2s ease,color .2s ease}
.faq-item[open] summary{color:var(--c-brand)}
.faq-item[open] .faq-mark{transform:rotate(135deg);background:var(--c-accent);color:#fff}
.faq-answer{padding:0 16px 24px 16px;font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:880px}
.faq-item[open]{background:var(--c-brand-soft);border-left:3px solid var(--c-brand)}

/* ============ CTA 带 ============ */
.cta-band{background:var(--c-brand);color:#fff;border-radius:26px;padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;position:relative;overflow:hidden}
.cta-band h2{font-size:clamp(23px,2.8vw,30px);font-weight:700;line-height:1.35;color:#fff;position:relative;z-index:2}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.76);font-size:15px;max-width:560px;position:relative;z-index:2}
.cta-band .btn{position:relative;z-index:2;flex-shrink:0}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-deep);color:rgba(255,255,255,.72);padding:72px 0 0;position:relative;overflow:hidden;margin-top:var(--section-y)}
.footer-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo-text{color:#fff}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col li{padding:6px 0;font-size:14px}
.footer-col a{color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--c-accent)}
.footer-contact li{font-size:14px;padding:6px 0;color:rgba(255,255,255,.72)}
.footer-bottom{position:relative;z-index:2;margin-top:52px;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom span{display:inline-block}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--section-y:72px}
  .container{padding:0 20px}
  .hero{padding:140px 0 80px}
  .hero-inner{gap:40px}
  .footer-inner{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
  .footer-inner .footer-contact{grid-column:span 3}
}
@media (max-width:991px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .login-band-grid{grid-template-columns:1fr 1fr}
  .login-band-grid .btn{grid-column:span 2;width:100%}
  .ladder{grid-template-columns:1fr;align-items:stretch}
  .ladder-card{min-height:auto!important}
  .plans{grid-template-columns:1fr;gap:20px}
  .plan-row{background:transparent!important}
  .deadline-inner{grid-template-columns:1fr;gap:28px}
  .contact-wrap{grid-template-columns:1fr;gap:28px}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px}
  .footer-inner{grid-template-columns:1fr 1fr}
  .footer-inner .footer-contact{grid-column:span 2}
  .nav-menu{position:absolute;top:calc(100% + 12px);left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:22px;box-shadow:var(--sh-2);padding:14px;display:none}
  .nav.open .nav-menu{display:flex}
  .nav-link{padding:14px 16px;justify-content:flex-start;min-height:48px;width:100%}
  .nav .nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav{position:relative;padding:10px 12px}
  .nav-menu .nav-cta-mobile{display:block;margin-top:6px}
  .nav-menu .nav-cta-mobile .btn{width:100%}
}
@media (max-width:767px){
  :root{--section-y:56px;--gap:20px}
  .container{padding:0 16px}
  body{font-size:15.5px}
  .hero{padding:126px 0 64px}
  .hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-actions .btn{width:100%}
  .hero-points{gap:16px}
  .login-band{padding:22px;margin-top:-40px}
  .login-band-grid{grid-template-columns:1fr}
  .login-band-grid .btn{grid-column:span 1}
  .login-band-foot{flex-direction:column;align-items:flex-start;gap:10px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .timer{flex-wrap:wrap;gap:10px}
  .timer-cell{min-height:64px;padding:12px 8px;min-width:64px}
  .timer-num{font-size:22px}
  .deadline{padding:28px 22px;border-radius:20px}
  .contact-card{padding:24px}
  .form-row{grid-template-columns:1fr;gap:18px}
  .cta-band{padding:32px 22px;border-radius:20px}
  .footer-inner{grid-template-columns:1fr;gap:26px}
  .footer-inner .footer-contact{grid-column:span 1}
  .site-footer{padding-top:52px}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:420px){
  .logo-text{font-size:14px}
  .hero-card{padding:20px}
  .plan-head,.plan-row,.plan-foot{padding-left:18px;padding-right:18px}
}

/* roulang page: article */
:root{
  --c-deep:#0F0D22;
  --c-brand:#2A2356;
  --c-brand-soft:#EDEAF7;
  --c-accent:#FF6B3D;
  --c-accent-dark:#E4522A;
  --c-mint:#4FD1C5;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-ink:#1C1A2E;
  --c-ink-2:#5B5872;
  --c-line:#E7E3DD;
  --r-card:18px;
  --r-btn:999px;
  --r-input:12px;
  --r-chip:8px;
  --sh-1:0 6px 20px rgba(20,18,43,.06);
  --sh-2:0 14px 34px rgba(20,18,43,.12);
  --container:1200px;
  --gap:28px;
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  padding-top:104px;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:none;}
a:hover{color:var(--c-accent);}
ul,ol{padding-left:1.2em;}
button{font:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);}
p{margin:0;}
:focus-visible{outline:2px solid var(--c-mint);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.starfield{position:relative;background-color:var(--c-deep);background-image:
  radial-gradient(1.6px 1.6px at 12% 22%,rgba(255,255,255,.55) 50%,transparent 51%),
  radial-gradient(1.2px 1.2px at 28% 68%,rgba(255,255,255,.42) 50%,transparent 51%),
  radial-gradient(1.8px 1.8px at 46% 32%,rgba(79,209,197,.55) 50%,transparent 51%),
  radial-gradient(1.2px 1.2px at 64% 78%,rgba(255,255,255,.36) 50%,transparent 51%),
  radial-gradient(1.6px 1.6px at 78% 26%,rgba(255,107,61,.5) 50%,transparent 51%),
  radial-gradient(1.2px 1.2px at 90% 62%,rgba(255,255,255,.4) 50%,transparent 51%);
}
/* ---------- header / nav ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:80;}
.nav{
  width:min(1160px,calc(100% - 32px));
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 14px 10px 18px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  box-shadow:var(--sh-1);
  transition:background .25s ease,box-shadow .25s ease;
}
.nav.scrolled{background:rgba(255,255,255,.95);box-shadow:var(--sh-2);}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);}
.logo:hover{color:var(--c-ink);}
.logo-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;}
.logo-mark svg{width:100%;height:100%;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  list-style:none;
  margin:0 0 0 20px;
  padding:0;
}
.nav-link{
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  font-weight:600;
  color:var(--c-ink-2);
  border-radius:var(--r-btn);
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--c-brand);background:var(--c-brand-soft);}
.nav-link.active{color:var(--c-brand);background:var(--c-brand-soft);}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-cta-mobile{display:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  align-items:center;justify-content:center;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-brand);border-radius:2px;position:relative;transition:background .2s;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-brand);border-radius:2px;transition:transform .2s,top .2s;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.open span{background:transparent;}
.nav-toggle.open span::before{top:0;transform:rotate(45deg);}
.nav-toggle.open span::after{top:0;transform:rotate(-45deg);}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  font-size:15px;font-weight:600;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,61,.28);}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-outline{background:transparent;border-color:var(--c-brand);color:var(--c-brand);}
.btn-outline:hover{background:var(--c-brand-soft);color:var(--c-brand);}
.btn:disabled{opacity:.45;transform:none;box-shadow:none;cursor:not-allowed;}
/* ---------- badges / chips ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;font-size:12.5px;font-weight:600;border-radius:var(--r-chip);line-height:1.6;}
.badge-mint{background:rgba(79,209,197,.14);color:#1F8C82;}
.badge-brand{background:rgba(42,35,86,.10);color:var(--c-brand);}
.badge-accent{background:rgba(255,107,61,.12);color:#C6421B;}
.chip{display:inline-flex;align-items:center;padding:6px 12px;font-size:13px;border-radius:var(--r-chip);background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink-2);}
.chip:hover{border-color:var(--c-brand);color:var(--c-brand);}
/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2);margin-bottom:18px;}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-brand);}
.breadcrumb .sep{color:#B9B4C6;}
.breadcrumb .current{color:var(--c-ink-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
/* ---------- article hero ---------- */
.article-hero{
  padding:44px 0 0;
  background-image:
    radial-gradient(900px 420px at 8% -12%,rgba(79,209,197,.12),transparent 62%),
    radial-gradient(760px 420px at 92% -6%,rgba(255,107,61,.10),transparent 60%);
  background-color:var(--c-bg);
}
.article-title{font-size:clamp(26px,3.6vw,40px);line-height:1.3;font-weight:700;letter-spacing:-.01em;margin-bottom:16px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-2);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#D6D1CB;display:inline-block;}
.article-cover{margin:32px 0 0;border-radius:16px;overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-1);background:var(--c-brand-soft);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
/* ---------- layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,800px) 220px;
  gap:48px;
  justify-content:center;
  align-items:start;
  padding:56px 0 0;
}
.article-main{min-width:0;}
.article-body{font-size:17px;line-height:1.9;color:var(--c-ink);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{font-size:clamp(22px,2.4vw,27px);line-height:1.4;font-weight:700;margin:48px 0 16px;scroll-margin-top:120px;}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;margin:32px 0 14px;scroll-margin-top:120px;}
.article-body h4{font-size:17px;line-height:1.5;font-weight:600;margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.15em;}
.article-body li{margin-bottom:10px;}
.article-body li::marker{color:var(--c-mint);}
.article-body blockquote{margin:28px 0;padding:20px 22px;background:var(--c-brand-soft);border-left:3px solid var(--c-brand);border-radius:0 12px 12px 0;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:0 auto;height:auto;}
.article-body figure{margin:28px 0;}
.article-body figcaption{font-size:13px;color:var(--c-ink-2);text-align:center;margin-top:10px;}
.article-body a{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{color:var(--c-accent);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;margin:0 0 1.4em;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;white-space:nowrap;}
.article-body th{background:var(--c-brand-soft);font-weight:600;}
.article-body code{background:#F1EEF9;padding:2px 6px;border-radius:6px;font-size:14px;}
.article-body pre{background:var(--c-deep);color:#EDEAF7;padding:18px 20px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7;}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:36px 0;}
.article-body strong{font-weight:700;}
/* ---------- toc ---------- */
.article-toc{
  position:sticky;
  top:112px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:16px;
  padding:20px 16px;
  box-shadow:var(--sh-1);
}
.article-toc h3{font-size:15px;font-weight:600;color:var(--c-brand);margin-bottom:12px;padding:0 10px;}
.article-toc ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;max-height:58vh;overflow:auto;}
.article-toc a{display:block;font-size:13.5px;line-height:1.6;color:var(--c-ink-2);padding:8px 10px;border-radius:8px;border-left:2px solid transparent;transition:.18s;}
.article-toc a:hover{background:var(--c-bg);color:var(--c-brand);}
.article-toc a.active{color:var(--c-accent);border-left-color:var(--c-accent);background:var(--c-bg);font-weight:600;}
/* ---------- empty ---------- */
.empty-article{
  border:1px dashed #CFC9DD;
  border-radius:var(--r-card);
  background:var(--c-surface);
  padding:48px 28px;
  text-align:center;
}
.empty-article h2{font-size:22px;margin-bottom:12px;}
.empty-article p{color:var(--c-ink-2);font-size:15px;margin-bottom:24px;}
/* ---------- article foot ---------- */
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:24px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-row .label{font-size:13px;color:var(--c-ink-2);}
.back-list{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--c-brand);}
.back-list:hover{color:var(--c-accent);}
.back-list .arrow{transition:transform .2s;}
.back-list:hover .arrow{transform:translateX(4px);}
/* ---------- sections ---------- */
.section{padding:var(--section-y) 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700;}
.section-head p{margin-top:10px;font-size:15px;color:var(--c-ink-2);max-width:640px;}
.section-head .more{font-size:15px;font-weight:600;color:var(--c-brand);}
.section-head .more:hover{color:var(--c-accent);}
/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.card{display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease;}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.card-cover{margin:16px 16px 0;border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:var(--c-brand-soft);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card:hover .card-body h3{color:var(--c-brand);}
.card-body p{font-size:14px;line-height:1.7;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--c-ink-2);border-top:1px solid var(--c-line);padding-top:12px;}
.card-foot .arrow{color:var(--c-brand);font-weight:600;transition:transform .2s ease;}
.card:hover .card-foot .arrow{transform:translateX(4px);color:var(--c-accent);}
/* ---------- cta band ---------- */
.cta-band{
  margin-top:var(--section-y);
  position:relative;
  overflow:hidden;
  background:var(--c-brand);
  border-radius:24px;
  padding:44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  color:#fff;
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background-image:
    radial-gradient(1.6px 1.6px at 16% 30%,rgba(255,255,255,.45) 50%,transparent 51%),
    radial-gradient(1.4px 1.4px at 52% 72%,rgba(79,209,197,.5) 50%,transparent 51%),
    radial-gradient(1.6px 1.6px at 84% 34%,rgba(255,107,61,.55) 50%,transparent 51%);
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px);line-height:1.4;margin-bottom:10px;position:relative;z-index:1;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;position:relative;z-index:1;}
.cta-band .btn{position:relative;z-index:1;}
/* ---------- footer ---------- */
.site-footer{margin-top:var(--section-y);padding:64px 0 28px;color:rgba(255,255,255,.72);}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;}
.site-footer .logo-text{color:#fff;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;font-size:14px;}
.footer-col a{color:rgba(255,255,255,.7);}
.footer-col a:hover{color:var(--c-accent);}
.footer-contact li{color:rgba(255,255,255,.65);}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,800px);gap:0;}
  .article-toc{display:none;}
}
@media (max-width:991px){
  :root{--section-y:72px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;gap:28px;}
  .article-body{font-size:16.5px;}
}
@media (max-width:767px){
  :root{--section-y:56px;--gap:20px;}
  body{padding-top:92px;}
  .container{padding:0 16px;}
  .nav{flex-wrap:wrap;padding:8px 10px 8px 14px;border-radius:26px;}
  .nav-menu{
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    margin:0;
    padding:12px;
    background:#fff;
    border:1px solid var(--c-line);
    border-radius:22px;
    box-shadow:var(--sh-2);
  }
  .nav-menu.open{display:flex;}
  .nav-link{height:48px;display:flex;align-items:center;padding:0 14px;border-radius:14px;font-size:15px;}
  .nav-cta{display:none;}
  .nav-cta-mobile{display:block;margin-top:6px;}
  .nav-cta-mobile .btn{width:100%;height:48px;}
  .nav-toggle{display:inline-flex;}
  .article-hero{padding:28px 0 0;}
  .article-layout{padding:36px 0 0;}
  .article-cover{margin-top:24px;border-radius:14px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin-top:36px;}
  .article-body h3{margin-top:26px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;border-radius:20px;}
  .cta-band .btn{width:100%;}
  .footer-inner{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:420px){
  .logo-text{font-size:15px;}
  .article-title{font-size:24px;}
  .btn{padding:13px 22px;}
}

/* roulang page: category1 */
:root{
  --c-deep:#0F0D22;
  --c-brand:#2A2356;
  --c-brand-soft:#EDEAF7;
  --c-accent:#FF6B3D;
  --c-accent-dark:#E4522A;
  --c-mint:#4FD1C5;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-ink:#1C1A2E;
  --c-ink-2:#5B5872;
  --c-line:#E7E3DD;
  --r-card:18px;
  --r-btn:999px;
  --r-input:12px;
  --r-chip:8px;
  --sh-1:0 6px 20px rgba(20,18,43,.06);
  --sh-2:0 14px 34px rgba(20,18,43,.12);
  --container:1200px;
  --gap:28px;
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-lock{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0}
p{margin-bottom:1.15em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--c-mint);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media(max-width:1199px){.container{padding:0 20px}}
@media(max-width:767px){.container{padding:0 16px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);border:0;
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  cursor:pointer;text-align:center;min-height:46px;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,61,.28)}
.btn-primary:hover{background:var(--c-accent-dark);transform:translateY(-2px)}
.btn-primary:active{background:var(--c-accent-dark);transform:translateY(0)}
.btn-ghost{background:transparent;border:1.5px solid var(--c-brand);color:var(--c-brand)}
.btn-ghost:hover{background:var(--c-brand-soft);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--c-brand);box-shadow:0 8px 20px rgba(0,0,0,.18)}
.btn-light:hover{background:var(--c-brand-soft);transform:translateY(-2px)}
.btn:focus-visible{outline:2px solid var(--c-mint);outline-offset:3px}
.btn:disabled,.btn.is-disabled{opacity:.45;transform:none;cursor:not-allowed;box-shadow:none}
.btn-sm{padding:10px 20px;font-size:14px;min-height:42px}
.link-text{color:var(--c-brand);font-weight:600;text-decoration:none;border-bottom:1px solid transparent;transition:border-color .18s ease,color .18s ease}
.link-text:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}

/* ---------- 星点纹理 ---------- */
.starfield{
  position:relative;
  background-color:var(--c-deep);
  background-image:
    radial-gradient(1.6px 1.6px at 12% 22%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(1.2px 1.2px at 32% 68%,rgba(255,255,255,.40),transparent 60%),
    radial-gradient(1.8px 1.8px at 58% 14%,rgba(255,255,255,.35),transparent 60%),
    radial-gradient(1.3px 1.3px at 76% 52%,rgba(255,255,255,.45),transparent 60%),
    radial-gradient(1.5px 1.5px at 88% 26%,rgba(255,255,255,.32),transparent 60%),
    radial-gradient(1.1px 1.1px at 22% 86%,rgba(255,255,255,.38),transparent 60%),
    radial-gradient(620px 320px at 82% 8%,rgba(79,209,197,.11),transparent 70%),
    radial-gradient(520px 280px at 6% 92%,rgba(255,107,61,.09),transparent 70%);
}

/* ---------- 导航 ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:120;padding:0 16px}
.nav{
  position:relative;
  width:min(1160px,100%);margin:0 auto;
  display:flex;align-items:center;gap:14px;
  padding:9px 12px 9px 18px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.86);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:background-color .2s ease,box-shadow .2s ease;
}
.nav.scrolled{background:rgba(255,255,255,.95);box-shadow:var(--sh-2)}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:var(--c-brand-soft)}
.logo-mark svg{width:22px;height:22px}
.logo-text{font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:4px;list-style:none;margin:0 0 0 auto;padding:0}
.nav-link{
  position:relative;display:block;padding:10px 14px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--c-ink-2);
  transition:color .18s ease,background-color .18s ease;
}
.nav-link:hover{color:var(--c-brand);background:var(--c-brand-soft)}
.nav-link.active{color:var(--c-brand);background:var(--c-brand-soft)}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:3px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--c-accent);
}
.nav-cta{flex:0 0 auto}
.nav-cta-mobile{display:none}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;cursor:pointer;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--c-brand);transition:background .18s ease}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-brand);transition:transform .2s ease,top .2s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

@media(max-width:900px){
  .nav{padding:9px 12px}
  .nav-menu{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border:1px solid var(--c-line);border-radius:22px;
    padding:12px;box-shadow:var(--sh-2);margin:0;
  }
  .nav-menu.open{display:flex}
  .nav-link{display:flex;align-items:center;min-height:48px;font-size:16px;border-radius:14px}
  .nav-link.active::after{display:none}
  .nav-cta{display:none}
  .nav-cta-mobile{display:block;margin-top:8px}
  .nav-cta-mobile .btn{width:100%;min-height:48px}
  .nav-toggle{display:inline-flex}
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:112px 0 18px;background:var(--c-bg)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2);list-style:none;padding:0;margin:0}
.crumb a{color:var(--c-ink-2);transition:color .18s ease}
.crumb a:hover{color:var(--c-brand)}
.crumb .sep{color:var(--c-line);font-size:13px}
.crumb .current{color:var(--c-ink);font-weight:600}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background-color:var(--c-deep);
  background-image:
    linear-gradient(118deg,rgba(15,13,34,.94) 0%,rgba(15,13,34,.82) 48%,rgba(42,35,86,.74) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover,cover;
  background-position:center,center;
  background-repeat:no-repeat,no-repeat;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1.6px 1.6px at 16% 30%,rgba(255,255,255,.5),transparent 60%),
    radial-gradient(1.2px 1.2px at 42% 72%,rgba(255,255,255,.36),transparent 60%),
    radial-gradient(1.7px 1.7px at 68% 22%,rgba(255,255,255,.4),transparent 60%),
    radial-gradient(1.2px 1.2px at 86% 62%,rgba(255,255,255,.34),transparent 60%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:56px}
.cat-hero .kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-chip);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:#fff;background:rgba(79,209,197,.16);border:1px solid rgba(79,209,197,.35);
  margin-bottom:18px;
}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,42px);line-height:1.28;font-weight:700;
  letter-spacing:-.01em;color:#fff;max-width:820px;margin-bottom:16px;
}
.cat-hero .hero-sub{font-size:16px;line-height:1.8;color:rgba(255,255,255,.76);max-width:640px;margin-bottom:28px}
.cat-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.cat-hero .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.cat-hero .btn-ghost:hover{background:rgba(255,255,255,.12)}

/* ---------- 板块通用 ---------- */
.section{padding:var(--section-y) 0}
.section.tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;padding:5px 12px;border-radius:var(--r-chip);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--c-brand);background:var(--c-brand-soft);margin-bottom:14px;
}
.section-head h2{font-size:clamp(23px,2.8vw,32px);line-height:1.4;font-weight:700;letter-spacing:-.01em;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--c-ink-2);max-width:700px}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}

/* ---------- 编号步骤 ---------- */
.step-list{list-style:none;margin:0;padding:0;display:grid;gap:16px;counter-reset:step}
.step-item{
  display:grid;grid-template-columns:74px 1fr;gap:22px;align-items:start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DCD6EE}
.step-num{
  font-size:24px;font-weight:700;line-height:1.2;color:var(--c-accent);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  padding-top:2px;
}
.step-body h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:8px}
.step-body p{font-size:15px;color:var(--c-ink-2);margin-bottom:10px}
.mini-list{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.mini-list li{position:relative;padding-left:18px;font-size:14px;color:var(--c-ink-2);line-height:1.75}
.mini-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--c-mint)}

/* ---------- 图文交错 ---------- */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center}
.split + .split{margin-top:72px}
.split.reverse .split-media{order:2}
.split-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-1)}
.split-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.split-text h3{font-size:clamp(21px,2.3vw,26px);font-weight:700;line-height:1.45;margin-bottom:14px;letter-spacing:-.01em}
.split-text p{font-size:15.5px;color:var(--c-ink-2);margin-bottom:18px}
.dot-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.dot-list li{
  min-height:44px;display:flex;align-items:center;gap:12px;
  font-size:15px;color:var(--c-ink);padding:8px 12px;border-radius:10px;
  transition:background-color .18s ease;
}
.dot-list li::before{content:"";flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--c-mint)}
.dot-list li:hover{background:var(--c-bg)}
.dot-list li strong{font-weight:600}
.dot-list li span{color:var(--c-ink-2);font-size:14px}

/* ---------- 横向指标条 ---------- */
.metric-bar{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.metric{
  position:relative;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;
  padding:20px 18px 18px 22px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.metric::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--c-mint),var(--c-brand))}
.metric:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.metric .m-tag{font-size:12.5px;font-weight:600;color:var(--c-mint);letter-spacing:.04em;display:block;margin-bottom:8px}
.metric h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:8px}
.metric p{font-size:14px;color:var(--c-ink-2);line-height:1.7}

/* ---------- 两列要点 ---------- */
.two-col{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 40px;list-style:none;margin:0;padding:0}
.two-col li{
  display:flex;gap:12px;align-items:flex-start;
  min-height:44px;padding:12px 14px;border-radius:12px;font-size:15px;color:var(--c-ink);
  border:1px solid transparent;transition:background-color .18s ease,border-color .18s ease;
}
.two-col li::before{content:"";flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--c-mint);margin-top:11px}
.two-col li:hover{background:var(--c-surface);border-color:var(--c-line)}
.two-col li span{color:var(--c-ink-2)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq{border-top:1px solid var(--c-line)}
.faq details{border-bottom:1px solid var(--c-line);transition:background-color .18s ease}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 18px;min-height:56px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--c-ink);
  transition:color .18s ease,background-color .18s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--c-brand)}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:var(--c-brand-soft);transition:transform .2s ease,background-color .2s ease;
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-brand);border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px}
.faq details[open]{background:var(--c-brand-soft);box-shadow:inset 3px 0 0 var(--c-brand)}
.faq details[open] .faq-icon{transform:rotate(45deg)}
.faq details[open] .faq-icon::after{opacity:0}
.faq .answer{padding:0 22px 24px 22px;font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:800px}

/* ---------- CTA 带 ---------- */
.cta-band{background-color:var(--c-brand);background-image:radial-gradient(520px 260px at 88% 12%,rgba(79,209,197,.16),transparent 70%),radial-gradient(460px 220px at 8% 88%,rgba(255,107,61,.14),transparent 70%)}
.cta-band .inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:56px 0;
}
.cta-band h2{font-size:clamp(22px,2.5vw,30px);font-weight:700;line-height:1.42;color:#fff;margin-bottom:10px;letter-spacing:-.01em}
.cta-band p{font-size:15px;color:rgba(255,255,255,.72);max-width:560px}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12)}

/* ---------- 页脚 ---------- */
.site-footer{padding:72px 0 0;color:rgba(255,255,255,.72)}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-mark{background:rgba(255,255,255,.1)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.footer-col li{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66)}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);display:inline-block;min-height:32px;line-height:32px;transition:color .18s ease}
.footer-col a:hover{color:var(--c-accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 28px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media(max-width:1199px){
  .section{padding:72px 0}
  .metric-bar{grid-template-columns:repeat(3,1fr)}
  .split{gap:36px}
}
@media(max-width:991px){
  .split{grid-template-columns:1fr;gap:24px}
  .split.reverse .split-media{order:0}
  .split + .split{margin-top:56px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band .inner{flex-direction:column;align-items:flex-start;padding:48px 0}
}
@media(max-width:767px){
  .section{padding:56px 0}
  .crumb-bar{padding:96px 0 14px}
  .cat-hero .container{padding-top:40px;padding-bottom:44px}
  .step-item{grid-template-columns:1fr;gap:10px;padding:22px}
  .step-num{font-size:20px}
  .metric-bar{grid-template-columns:1fr}
  .two-col{grid-template-columns:1fr;gap:4px}
  .faq summary{padding:18px 12px;font-size:16px}
  .faq .answer{padding:0 16px 20px 16px}
  .footer-inner{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .cta-band .actions{width:100%}
  .cta-band .actions .btn{flex:1 1 auto}
}
@media(max-width:420px){
  .cat-hero h1{font-size:26px}
  .btn{padding:13px 22px}
  .logo-text{font-size:15px}
}

/* roulang page: category2 */
:root{
  --c-deep:#0F0D22;
  --c-brand:#2A2356;
  --c-brand-soft:#EDEAF7;
  --c-accent:#FF6B3D;
  --c-accent-dark:#E4522A;
  --c-mint:#4FD1C5;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-ink:#1C1A2E;
  --c-ink-2:#5B5872;
  --c-line:#E7E3DD;
  --r-card:18px;
  --r-btn:999px;
  --r-input:12px;
  --r-chip:8px;
  --sh-1:0 6px 20px rgba(20,18,43,.06);
  --sh-2:0 14px 34px rgba(20,18,43,.12);
  --container:1200px;
  --gap:28px;
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--c-accent)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-mint);outline-offset:2px;border-radius:6px}

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

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:14px 28px;
  border:0;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  text-align:center;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{min-height:40px;padding:10px 20px;font-size:14px}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,61,.28)}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--c-brand);border:1.5px solid var(--c-brand)}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand)}
.btn-light{background:#fff;color:var(--c-brand)}
.btn-light:hover{background:var(--c-brand-soft);color:var(--c-brand);transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn.is-loading{color:transparent;position:relative;pointer-events:none}
.btn.is-loading::after{
  content:"";position:absolute;width:18px;height:18px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.link-text{color:var(--c-brand);font-weight:600;font-size:14px;transition:color .18s ease}
.link-text:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:4px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-chip);
  font-size:12.5px;font-weight:600;line-height:1.6;
}
.badge-mint{background:rgba(79,209,197,.14);color:#1F7C74}
.badge-brand{background:rgba(42,35,86,.10);color:var(--c-brand)}
.badge-accent{background:rgba(255,107,61,.12);color:#C2401B}

.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}

.section{padding:var(--section-y) 0}
.section-head{margin-bottom:32px;max-width:780px}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-head p{
  margin-top:12px;
  color:var(--c-ink-2);
  font-size:15px;
  line-height:1.85;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-mint);
  letter-spacing:.08em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-mint);border-radius:2px}

/* ---------- 星点背景 ---------- */
.starfield{position:relative;background-color:var(--c-deep);overflow:hidden}
.starfield::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 22%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(1.2px 1.2px at 32% 68%,rgba(255,255,255,.42),transparent 60%),
    radial-gradient(1.8px 1.8px at 58% 18%,rgba(255,255,255,.5),transparent 60%),
    radial-gradient(1.2px 1.2px at 74% 52%,rgba(255,255,255,.38),transparent 60%),
    radial-gradient(1.6px 1.6px at 88% 78%,rgba(255,255,255,.46),transparent 60%),
    radial-gradient(1.2px 1.2px at 44% 88%,rgba(255,255,255,.34),transparent 60%);
}
.starfield::after{
  content:"";position:absolute;inset:-20% -10% auto -10%;height:420px;pointer-events:none;
  background:radial-gradient(50% 50% at 20% 40%,rgba(79,209,197,.10),transparent 70%),
             radial-gradient(45% 50% at 82% 20%,rgba(255,107,61,.10),transparent 70%);
}
.starfield>*{position:relative;z-index:1}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  padding:16px 0;
  pointer-events:none;
}
.nav{
  pointer-events:auto;
  width:min(1160px,calc(100% - 32px));
  margin:0 auto;
  display:flex;align-items:center;gap:18px;
  padding:10px 12px 10px 18px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.86);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  backdrop-filter:blur(10px);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.nav.scrolled{background:rgba(255,255,255,.95);box-shadow:var(--sh-2)}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:700;flex-shrink:0}
.logo:hover{color:var(--c-brand)}
.logo-mark{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center}
.logo-mark svg{width:100%;height:100%}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  display:block;padding:10px 14px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--c-ink);
}
.nav-link:hover{color:var(--c-brand);background:var(--c-brand-soft)}
.nav-link.active{color:var(--c-brand);background:var(--c-brand-soft)}
.nav-cta{display:flex;align-items:center;padding-left:8px}
.nav-cta-mobile{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;
  border-radius:12px;cursor:pointer;position:relative;margin-left:auto;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:.22s ease;
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:translateX(-50%) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:translateX(-50%) rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap{padding-top:104px;background:var(--c-bg)}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-ink-2);
}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-brand)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{color:var(--c-brand);font-weight:600}

/* ---------- 分类 Hero ---------- */
.page-hero{
  position:relative;
  margin-top:18px;
  border-radius:24px;
  overflow:hidden;
  min-height:300px;
  display:flex;align-items:center;
  background-color:var(--c-deep);
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,13,34,.92) 0%,rgba(15,13,34,.78) 52%,rgba(42,35,86,.62) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:56px 48px;max-width:760px}
.page-hero .badge{margin-bottom:16px}
.page-hero h1{
  color:#fff;
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
}
.page-hero p{
  margin-top:14px;
  color:rgba(255,255,255,.78);
  font-size:16px;
  line-height:1.8;
  max-width:620px;
}
.page-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ---------- 活动类型卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.media-card{padding:0;overflow:hidden}
.media-card .thumb{
  position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(135deg,#2A2356,#0F0D22);
}
.media-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.media-card:hover .thumb img{transform:scale(1.04)}
.media-card .body{padding:24px 26px 26px}
.media-card h3{font-size:18px;line-height:1.5;font-weight:600;margin-bottom:10px}
.media-card p{color:var(--c-ink-2);font-size:14px;line-height:1.8}
.media-card .meta{
  margin-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-ink-2);
}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-brand)}
.arrow-link svg{transition:transform .18s ease}
.arrow-link:hover{color:var(--c-accent)}
.arrow-link:hover svg{transform:translateX(4px)}

/* ---------- 参数对照卡 ---------- */
.compare-head{margin-bottom:32px}
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:stretch}
.plan{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px 24px;
  display:flex;flex-direction:column;
  position:relative;
  transition:transform .18s ease,box-shadow .18s ease;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.plan.featured{
  border:1.5px solid var(--c-accent);
  background:linear-gradient(180deg,rgba(237,234,247,.72),#fff 42%);
  box-shadow:0 16px 36px rgba(255,107,61,.14);
}
.plan .tag-recommend{
  position:absolute;top:-13px;left:24px;
  background:var(--c-accent);color:#fff;
  font-size:12.5px;font-weight:600;
  padding:4px 12px;border-radius:var(--r-chip);
  box-shadow:0 6px 14px rgba(255,107,61,.3);
}
.plan h3{font-size:19px;font-weight:700;line-height:1.5}
.plan .plan-sub{margin-top:6px;font-size:13.5px;color:var(--c-ink-2)}
.plan .plan-value{
  margin:18px 0 20px;
  font-size:26px;font-weight:700;color:var(--c-brand);
  font-variant-numeric:tabular-nums;
  line-height:1.3;
}
.plan .plan-value small{display:block;font-size:12.5px;font-weight:500;color:var(--c-ink-2);margin-top:4px}
.plan-rows{border-top:1px solid var(--c-line);margin-top:auto}
.plan-row{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:12px 8px;border-bottom:1px solid var(--c-line);font-size:14px;
}
.plan-row:nth-child(odd){background:var(--c-bg)}
.plan-row .k{color:var(--c-ink-2);flex:0 0 42%}
.plan-row .v{font-weight:600;text-align:right;flex:1}
.plan .btn{margin-top:22px;width:100%}

/* ---------- 指标条 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
}
.metric{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;
  padding:24px 22px;box-shadow:var(--sh-1);
}
.metric .num{
  font-size:30px;font-weight:700;color:var(--c-brand);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric .num em{font-style:normal;font-size:15px;color:var(--c-mint);margin-left:4px;font-weight:600}
.metric .label{margin-top:8px;font-size:14px;font-weight:600}
.metric .desc{margin-top:4px;font-size:13px;color:var(--c-ink-2);line-height:1.7}
.bar-block{margin-top:36px;display:flex;flex-direction:column;gap:20px}
.bar-item{display:flex;align-items:center;gap:18px}
.bar-item .bar-label{flex:0 0 118px;font-size:14px;font-weight:600}
.bar-track{flex:1;height:10px;border-radius:999px;background:rgba(42,35,86,.10);overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-mint),var(--c-accent))}
.bar-fill.b2{background:linear-gradient(90deg,var(--c-mint),var(--c-brand))}
.bar-fill.b3{background:linear-gradient(90deg,var(--c-accent),var(--c-brand))}
.bar-item .bar-val{flex:0 0 58px;text-align:right;font-size:13.5px;color:var(--c-ink-2);font-variant-numeric:tabular-nums}

/* ---------- 准备清单要点网格 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.check-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:16px;padding:22px 22px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.check-item .dot{
  flex:0 0 34px;height:34px;border-radius:12px;
  background:var(--c-brand-soft);color:var(--c-brand);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.check-item h3{font-size:16px;font-weight:600;line-height:1.5}
.check-item p{margin-top:6px;font-size:14px;color:var(--c-ink-2);line-height:1.8}

/* ---------- 图文区块 ---------- */
.split{
  display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center;
}
.split .pic{
  width:100%;aspect-ratio:16/10;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-2);background:var(--c-brand-soft);
}
.split .pic img{width:100%;height:100%;object-fit:cover}
.split h2{font-size:clamp(22px,2.6vw,30px);line-height:1.4;font-weight:700;letter-spacing:-.01em}
.split p.lead{margin-top:14px;color:var(--c-ink-2);font-size:15.5px}
.tick-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.tick-list li{
  display:flex;gap:12px;align-items:flex-start;
  min-height:44px;padding:10px 12px;border-radius:12px;
  font-size:15px;transition:background-color .18s ease;
}
.tick-list li::before{
  content:"";flex:0 0 8px;height:8px;border-radius:50%;background:var(--c-mint);margin-top:9px;
}
.tick-list li:hover{background:var(--c-bg)}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;border-top:1px solid var(--c-line)}
.faq details{border-bottom:1px solid var(--c-line)}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 16px;font-size:17px;font-weight:600;line-height:1.6;
  transition:background-color .18s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:var(--c-bg)}
.faq summary .icon{
  flex:0 0 26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;color:var(--c-brand);font-weight:600;
  transition:transform .22s ease,background-color .22s ease;
}
.faq details[open] summary{background:var(--c-brand-soft);box-shadow:inset 3px 0 0 var(--c-brand)}
.faq details[open] summary .icon{transform:rotate(45deg);background:var(--c-brand);color:#fff;border-color:var(--c-brand)}
.faq .answer{padding:0 16px 24px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* ---------- 底部 CTA ---------- */
.cta-band{
  border-radius:24px;
  padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  background:linear-gradient(120deg,var(--c-brand) 0%,#1B163E 60%,var(--c-deep) 100%);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(40% 60% at 88% 20%,rgba(255,107,61,.20),transparent 70%),
             radial-gradient(36% 60% at 8% 90%,rgba(79,209,197,.16),transparent 70%);
}
.cta-band .cta-copy{position:relative;z-index:2;max-width:620px}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,30px);line-height:1.4;font-weight:700}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.76);font-size:15px}
.cta-band .cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:var(--section-y);padding:72px 0 32px;color:rgba(255,255,255,.72)}
.footer-inner{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;
}
.footer-brand .logo{color:#fff}
.footer-brand .logo:hover{color:var(--c-accent)}
.footer-brand .logo-text{color:#fff}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li{font-size:14px;color:rgba(255,255,255,.6)}
.footer-col a{color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--c-accent)}
.footer-contact ul li{color:rgba(255,255,255,.6)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:24px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--section-y:72px}
  .container{padding:0 20px}
  .split{gap:36px}
  .footer-inner{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .compare-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .compare-grid .plan.featured{order:-1}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:28px}
  .split .pic{order:-1}
  .page-hero-inner{padding:44px 32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px 32px}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--section-y:56px;--gap:18px}
  .container{padding:0 16px}
  .site-header{padding:12px 0}
  .nav{padding:8px 10px 8px 14px;gap:10px}
  .logo-text{font-size:15.5px;white-space:normal;line-height:1.3;max-width:150px}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .nav-menu{
    position:fixed;left:16px;right:16px;top:78px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--c-line);border-radius:20px;
    box-shadow:var(--sh-2);padding:12px;
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-link{padding:0 16px;height:48px;display:flex;align-items:center;border-radius:14px;font-size:16px}
  .nav-cta-mobile{display:block;margin-top:8px}
  .nav-cta-mobile .btn{width:100%}
  .breadcrumb-wrap{padding-top:92px}
  .page-hero{min-height:0;border-radius:20px}
  .page-hero-inner{padding:36px 22px}
  .page-hero p{font-size:15px}
  .page-hero-actions{flex-direction:column;align-items:stretch}
  .page-hero-actions .btn{width:100%}
  .grid-3,.grid-2,.compare-grid,.check-grid,.metrics{grid-template-columns:1fr}
  .compare-grid .plan.featured{order:0}
  .card{padding:22px}
  .media-card{padding:0}
  .media-card .body{padding:20px}
  .plan{padding:24px 20px}
  .plan-row .k{flex:0 0 46%}
  .bar-item{flex-wrap:wrap;gap:10px}
  .bar-item .bar-label{flex:0 0 100%}
  .bar-item .bar-val{flex:0 0 46px}
  .cta-band{padding:36px 22px;border-radius:20px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{width:100%}
  .footer-inner{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:420px){
  .logo-text{font-size:14.5px;max-width:120px}
  .metric .num{font-size:26px}
  .faq summary{font-size:15.5px;padding:18px 12px}
}