/* roulang page: index */
:root{
  --c-primary:#6D4AFF;
  --c-primary-hover:#7d5eff;
  --c-primary-dark:#4f31d6;
  --c-primary-soft:#EFEBFF;
  --c-primary-tint:#F7F5FF;
  --c-accent:#17C6B8;
  --c-accent-soft:#E4F8F6;
  --c-warn:#FFA51F;
  --c-warn-soft:#FFF3E2;
  --c-warn-ink:#9A5B00;
  --c-ink:#141628;
  --c-body:#525873;
  --c-muted:#8C93AB;
  --c-line:#E7E9F2;
  --c-line-soft:#EDEFF5;
  --c-bg:#F5F6FB;
  --c-white:#FFFFFF;
  --c-dark:#15122B;
  --c-dark-2:#1E1A3A;
  --c-success:#1FA971;
  --c-danger:#E5484D;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --r-hero:20px;
  --sh-1:0 1px 2px rgba(20,22,40,.04), 0 8px 24px rgba(20,22,40,.06);
  --sh-2:0 12px 32px rgba(20,22,40,.12);
  --sh-3:0 2px 6px rgba(20,22,40,.05), 0 18px 44px rgba(20,22,40,.14);
  --sp-section:88px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-section) 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--c-white);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:var(--r-pill);
  padding:6px 14px;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--c-primary);display:block;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,31px);
  line-height:1.3;font-weight:700;color:var(--c-ink);
  margin:16px 0 12px;letter-spacing:-.01em;
}
.section-head p{font-size:16px;line-height:1.85;color:var(--c-body);}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-white);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line-soft);box-shadow:0 6px 20px rgba(20,22,40,.07);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),#8f74ff);
  border-radius:10px;
}
.logo-mark svg{width:19px;height:19px;display:block;}
.logo-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap;}
.logo-text span{color:var(--c-primary);}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;}
.main-nav a{
  position:relative;display:block;padding:10px 14px;border-radius:var(--r-input);
  font-size:15px;font-weight:500;color:var(--c-body);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.main-nav a:hover{color:var(--c-primary);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--c-primary);font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-box{position:relative;}
.search-box svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--c-muted);}
.search-box input{
  width:220px;height:42px;padding:0 14px 0 38px;
  border:1px solid var(--c-line);border-radius:var(--r-pill);
  background:#FAFBFF;font-size:14px;color:var(--c-ink);
  transition:width .25s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box input::placeholder{color:var(--c-muted);}
.search-box input:focus{
  width:280px;outline:none;background:var(--c-white);
  border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(109,74,255,.12);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,opacity .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(109,74,255,.26);}
.btn-primary:hover{background:var(--c-primary-hover);transform:translateY(-1px);box-shadow:0 12px 26px rgba(109,74,255,.34);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(109,74,255,.28);}
.btn-ghost{background:var(--c-white);color:var(--c-ink);border:1px solid #DADDF0;}
.btn-ghost:hover{border-color:var(--c-primary);background:#F4F2FF;color:var(--c-primary-dark);}
.btn-ghost:active{transform:translateY(0);}
.btn-darkghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.28);}
.btn-darkghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5);}
.btn:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);}
.link-arrow svg{width:15px;height:15px;transition:transform .22s ease;}
.link-arrow:hover svg{transform:translateX(3px);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-input);border:1px solid var(--c-line);align-items:center;justify-content:center;}
.nav-toggle svg{width:20px;height:20px;stroke:var(--c-ink);}
.mobile-drawer{
  display:none;border-top:1px solid var(--c-line-soft);background:var(--c-white);
  padding:16px 0 24px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer nav{display:flex;flex-direction:column;gap:4px;margin-bottom:16px;}
.mobile-drawer nav a{padding:12px 14px;border-radius:var(--r-input);font-size:15px;color:var(--c-body);font-weight:500;}
.mobile-drawer nav a.is-active{color:var(--c-primary);background:var(--c-primary-soft);}
.mobile-drawer .btn{width:100%;}

/* ---------- hero ---------- */
.hero{background:var(--c-white);position:relative;overflow:hidden;padding:64px 0 76px;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(109,74,255,.14) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 72%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 72%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;min-height:520px;}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:700;
  color:var(--c-ink);letter-spacing:-.02em;margin:20px 0 18px;
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--c-body);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;padding-top:26px;border-top:1px solid var(--c-line);}
.hero-stat b{display:block;font-size:26px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-stat b em{font-style:normal;font-size:15px;color:var(--c-primary);margin-left:2px;}
.hero-stat span{font-size:14px;color:var(--c-muted);}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-hero);box-shadow:var(--sh-3);}
.hero-media::after{
  content:"";position:absolute;inset:auto -14px -14px auto;width:96px;height:96px;
  background:var(--c-accent);opacity:.14;border-radius:24px;z-index:-1;
}
.hero-badge{
  position:absolute;left:-14px;bottom:22px;
  display:flex;align-items:center;gap:10px;
  background:var(--c-white);border:1px solid var(--c-line);
  border-radius:var(--r-pill);padding:9px 18px 9px 12px;
  box-shadow:var(--sh-1);font-size:13px;font-weight:600;color:var(--c-ink);
}
.hero-badge i{width:26px;height:26px;border-radius:50%;background:var(--c-accent-soft);display:flex;align-items:center;justify-content:center;font-style:normal;}
.hero-badge i svg{width:14px;height:14px;stroke:var(--c-accent);}

/* ---------- compare table ---------- */
.table-scroll{overflow-x:auto;border-radius:var(--r-card);border:1px solid var(--c-line);background:var(--c-white);box-shadow:var(--sh-1);}
.compare{width:100%;min-width:760px;border-collapse:collapse;}
.compare thead th{
  position:sticky;top:0;z-index:2;background:var(--c-white);
  font-size:15px;font-weight:600;color:var(--c-ink);text-align:center;
  padding:20px 18px;border-bottom:1px solid var(--c-line);
}
.compare thead th:first-child{text-align:left;width:32%;}
.compare tbody td{
  padding:16px 18px;text-align:center;font-size:15px;
  border-bottom:1px solid var(--c-line-soft);color:var(--c-body);
}
.compare tbody tr:nth-child(even){background:#FAFBFF;}
.compare tbody td:first-child{text-align:left;font-weight:600;color:var(--c-ink);}
.compare tbody tr:last-child td{border-bottom:none;}
.compare .col-reco{position:relative;background:var(--c-primary-tint);}
.compare thead th.col-reco{color:var(--c-primary);}
.compare thead th.col-reco::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--c-primary);border-radius:3px 3px 0 0;}
.reco-tag{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--c-warn);color:#3d2400;font-size:12px;font-weight:700;
  padding:3px 12px;border-radius:var(--r-pill);white-space:nowrap;
}
.tick,.cross{display:inline-flex;width:20px;height:20px;align-items:center;justify-content:center;}
.tick svg{stroke:var(--c-accent);}
.cross svg{stroke:#C4C9D8;}
.table-hint{margin-top:14px;font-size:13px;color:var(--c-muted);}

/* ---------- tier cards ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.tier-card{
  background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tier-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.tier-card h3{font-size:21px;font-weight:700;color:var(--c-ink);margin-bottom:6px;}
.tier-card .tier-note{font-size:14px;color:var(--c-muted);margin-bottom:20px;}
.tier-price{font-size:30px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1.2;margin-bottom:22px;}
.tier-price small{font-size:14px;font-weight:500;color:var(--c-muted);margin-left:4px;}
.tier-list{display:flex;flex-direction:column;gap:12px;margin-bottom:26px;}
.tier-list li{display:flex;gap:10px;font-size:15px;color:var(--c-body);line-height:1.7;}
.tier-list li svg{width:18px;height:18px;flex-shrink:0;margin-top:4px;stroke:var(--c-accent);}
.tier-card .btn{width:100%;}
.tier-card--featured{
  border-color:var(--c-primary);border-width:2px;
  transform:translateY(-8px);box-shadow:var(--sh-2);position:relative;
}
.tier-card--featured:hover{transform:translateY(-12px);}
.tier-card--featured .badge-flag{
  position:absolute;top:-13px;right:24px;background:var(--c-warn-soft);color:var(--c-warn-ink);
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:var(--r-pill);
}

/* ---------- news cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--c-white);
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DCD9F5;}
.card:hover .card-title{color:var(--c-primary);}
.card-cover{position:relative;overflow:hidden;background:#EFEFF7;}
.card-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.card:hover .card-cover img{transform:scale(1.03);}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge--accent{background:var(--c-accent-soft);color:#0B8377;}
.badge--warn{background:var(--c-warn-soft);color:var(--c-warn-ink);}
.card-title{
  font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.5;
  margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.card-text{
  font-size:14px;line-height:1.7;color:var(--c-body);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-muted);padding-top:16px;border-top:1px solid var(--c-line-soft);}
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-white);
  padding:56px 24px;text-align:center;
}
.empty-state svg{width:56px;height:56px;stroke:#C9CEE0;margin:0 auto 18px;}
.empty-state p{font-size:15px;color:var(--c-body);margin-bottom:20px;}

/* ---------- premium preview ---------- */
.lock-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.lock-card{position:relative;background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease;}
.lock-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.lock-card .lock-flag{position:absolute;top:14px;right:14px;z-index:3;}
.lock-body{padding:22px 24px 24px;}
.lock-body h3{font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.55;margin-bottom:8px;}
.lock-body p{font-size:14px;color:var(--c-body);line-height:1.7;}
.lock-mask{
  position:absolute;left:0;right:0;bottom:0;height:40%;
  background:linear-gradient(to top,rgba(21,18,43,.9),rgba(21,18,43,0));
  display:flex;align-items:flex-end;justify-content:center;padding-bottom:16px;
}
.lock-mask span{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:#fff;}
.lock-mask svg{width:14px;height:14px;stroke:#fff;}

/* ---------- faq ---------- */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-item{
  background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#D9D5F3;}
.faq-item.is-open{border-color:#D3CBFB;box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color .2s ease;
}
.faq-item.is-open .faq-q{color:var(--c-primary);}
.faq-q svg{width:18px;height:18px;flex-shrink:0;stroke:currentColor;transition:transform .28s ease;}
.faq-item.is-open .faq-q svg{transform:rotate(180deg);}
.faq-a{display:none;padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-body);background:var(--c-primary-tint);}
.faq-item.is-open .faq-a{display:block;}

/* ---------- cta ---------- */
.cta-band{background:var(--c-dark);color:#fff;padding:72px 0;}
.cta-grid{display:grid;grid-template-columns:1fr 380px;gap:56px;align-items:center;}
.cta-band h2{font-size:clamp(24px,2.8vw,32px);line-height:1.35;font-weight:700;color:#fff;margin-bottom:14px;}
.cta-band p{font-size:16px;line-height:1.85;color:rgba(255,255,255,.72);max-width:560px;}
.cta-points{display:flex;flex-direction:column;gap:14px;margin-top:28px;}
.cta-points li{display:flex;gap:12px;font-size:15px;color:rgba(255,255,255,.86);}
.cta-points li svg{width:18px;height:18px;flex-shrink:0;margin-top:4px;stroke:var(--c-accent);}
.price-card{
  background:var(--c-white);border-radius:var(--r-card);padding:30px;color:var(--c-ink);
  box-shadow:0 0 0 1px rgba(255,255,255,.08),0 24px 48px rgba(0,0,0,.28);
}
.price-card .plan{font-size:14px;font-weight:600;color:var(--c-primary);}
.price-card .amount{font-size:38px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.2;margin:10px 0 4px;}
.price-card .amount small{font-size:15px;font-weight:500;color:var(--c-muted);}
.price-card .note{font-size:13px;color:var(--c-muted);margin-bottom:22px;}
.price-card .btn{width:100%;}
.price-card .fine{font-size:13px;color:var(--c-muted);text-align:center;margin-top:14px;}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark-2);color:rgba(255,255,255,.68);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;margin-top:18px;max-width:320px;color:rgba(255,255,255,.6);}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.62);}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

@media (max-width:1180px){
  .card-grid,.lock-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1024px){
  :root{--sp-section:64px;}
  .main-nav{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .nav-right .btn-primary{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:auto;}
  .hero-media{order:-1;}
  .tier-grid{grid-template-columns:1fr;gap:20px;}
  .tier-card--featured{transform:none;}
  .tier-card--featured:hover{transform:translateY(-4px);}
  .card-grid,.lock-grid{grid-template-columns:repeat(2,1fr);}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section-head--split{flex-direction:column;align-items:flex-start;gap:16px;}
  .hero{padding:40px 0 56px;}
  .hero-stats{gap:28px;}
  .faq-q{padding:18px 20px;font-size:15px;}
  .faq-a{padding:0 20px 20px;}
}
@media (max-width:520px){
  :root{--sp-section:48px;}
  .container{padding:0 16px;}
  .logo-text{font-size:15px;}
  .hero-media img{aspect-ratio:4/3;border-radius:16px;}
  .hero-badge{left:8px;bottom:12px;padding:7px 14px 7px 10px;font-size:12px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .card-grid,.lock-grid{grid-template-columns:1fr;}
  .cta-band{padding:52px 0;}
  .price-card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --c-primary:#6D4AFF;
  --c-primary-soft:#EFEBFF;
  --c-primary-tint:#F7F5FF;
  --c-accent:#17C6B8;
  --c-warn:#FFA51F;
  --c-dark:#15122B;
  --c-bg:#F5F6FB;
  --c-card:#FFFFFF;
  --c-line:#E7E9F2;
  --c-line-strong:#DADDF0;
  --c-ink:#141628;
  --c-body:#525873;
  --c-body-deep:#3B4058;
  --c-muted:#8C93AB;
  --c-ok:#1FA971;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,40,.04), 0 8px 24px rgba(20,22,40,.06);
  --sh-2:0 12px 32px rgba(20,22,40,.12);
  --gap-section:88px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
img{max-width:100%;display:block;border:0;}
button,input,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:#EDEFF5;box-shadow:0 8px 24px rgba(20,22,40,.06);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,#7C5BFF,#5A34F0);
  box-shadow:0 6px 16px rgba(109,74,255,.32);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;}
.logo-text span{color:var(--c-primary);}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:12px;}
.main-nav a{
  position:relative;padding:10px 14px;font-size:15px;color:var(--c-body);border-radius:8px;
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover{color:var(--c-primary);background:var(--c-primary-tint);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--c-primary);font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;width:220px;padding:0 14px;
  background:#F7F8FC;border:1px solid var(--c-line-strong);border-radius:var(--r-pill);
  transition:width .25s ease,border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search-box svg{width:16px;height:16px;flex:0 0 auto;color:var(--c-muted);}
.search-box input{
  width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-ink);
}
.search-box input::placeholder{color:var(--c-muted);}
.search-box:focus-within{width:280px;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(109,74,255,.12);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:40px;padding:0 20px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px rgba(109,74,255,.28);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(109,74,255,.34);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(109,74,255,.26);}
.btn-ghost{background:#fff;color:var(--c-ink);border:1px solid var(--c-line-strong);}
.btn-ghost:hover{border-color:var(--c-primary);background:#F4F2FF;color:var(--c-primary);}
.btn-ghost:active{transform:translateY(0);}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px;}
.btn-link svg{width:16px;height:16px;transition:transform .2s ease;}
.btn-link:hover svg{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.burger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line-strong);
  background:#fff;align-items:center;justify-content:center;
}
.burger span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer{
  position:fixed;top:0;right:0;z-index:120;width:290px;max-width:86vw;height:100%;
  background:#fff;box-shadow:-16px 0 48px rgba(20,22,40,.16);
  transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);font-size:18px;color:var(--c-body);}
.drawer nav{display:flex;flex-direction:column;gap:4px;}
.drawer nav a{padding:12px 14px;border-radius:10px;font-size:15.5px;color:var(--c-body);}
.drawer nav a:hover{background:var(--c-primary-tint);color:var(--c-primary);}
.drawer nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.drawer .btn{margin-top:auto;width:100%;height:46px;}
.backdrop{
  position:fixed;inset:0;z-index:110;background:rgba(21,18,43,.42);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.backdrop.is-open{opacity:1;visibility:visible;}

/* ============ article hero ============ */
.article-hero{
  position:relative;color:#fff;padding:38px 0 78px;overflow:hidden;
  background-color:#15122B;background-size:cover;background-position:center;
}
.article-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:rgba(255,255,255,.08);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.66);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:rgba(255,255,255,.4);}
.breadcrumb .crumb-current{color:#C9BEFF;font-weight:600;}
.article-hero .badge-cat{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  font-size:13px;font-weight:600;color:#fff;margin-bottom:18px;
}
.article-hero h1{
  color:#fff;font-size:clamp(26px,3.6vw,40px);line-height:1.28;letter-spacing:-.01em;max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;font-size:14px;color:rgba(255,255,255,.72);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.34);}

/* ============ article layout ============ */
.article-region{padding:56px 0 var(--gap-section);}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:64px;align-items:start;}
.article-main{min-width:0;}
.article-lead{
  background:#F5F6FB;border-left:3px solid var(--c-primary);border-radius:0 var(--r-img) var(--r-img) 0;
  padding:20px 24px;font-size:17px;line-height:1.85;color:#3C4159;margin-bottom:36px;
}
.article-body{color:var(--c-body-deep);}
.article-body p{font-size:16px;line-height:1.9;margin-bottom:18px;}
.article-body h2{
  position:relative;font-size:26px;line-height:1.35;margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:20px;margin:28px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px;}
.article-body ul li{list-style:disc;margin-bottom:8px;line-height:1.85;}
.article-body ol li{list-style:decimal;margin-bottom:8px;line-height:1.85;}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;background:var(--c-primary-tint);
  border-left:3px solid var(--c-primary);border-radius:0 var(--r-img) var(--r-img) 0;color:#4A4F68;
}
.article-body img{border-radius:var(--r-img);margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-muted);margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th{
  background:#F4F2FF;color:#2F2A55;text-align:left;padding:12px 14px;
  border-bottom:1px solid var(--c-line);font-weight:600;
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);}
.article-body tbody tr:nth-child(even){background:#FAFBFF;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#5533E8;}

.empty-state{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:56px 32px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state svg{width:96px;height:96px;margin:0 auto 20px;color:var(--c-line-strong);}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--c-body);margin-bottom:24px;}

/* tags + back */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--c-line);}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.tag-list a{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:600;
}
.tag-list a:hover{background:var(--c-primary);color:#fff;}
.back-row{display:flex;flex-wrap:wrap;gap:14px;}

/* related */
.related{margin-top:var(--gap-section);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:28px;}
.section-head p{font-size:14.5px;color:var(--c-muted);margin-top:8px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D9D2FF;}
.card:hover .card-title{color:var(--c-primary);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDEFF7;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.card-title{font-size:17px;line-height:1.5;color:var(--c-ink);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-text{font-size:14.5px;color:var(--c-body);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px;}
.card-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--c-muted);margin-top:auto;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-amber{background:#FFF3E0;color:#B26B00;}
.badge-line{background:#fff;border:1px solid var(--c-line-strong);color:var(--c-body);}

/* sidebar */
.article-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:24px;}
.side-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-1);}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--c-primary);}
.side-nav a{
  display:block;padding:9px 12px;font-size:14.5px;color:var(--c-body);
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
}
.side-nav a:hover{background:var(--c-primary-tint);color:var(--c-primary);border-left-color:var(--c-primary);}
.rank-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--c-line);}
.rank-list li:last-child{border-bottom:0;padding-bottom:0;}
.rank-no{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;display:grid;place-items:center;
  font-size:12.5px;font-weight:700;background:#F1F2F8;color:var(--c-muted);font-variant-numeric:tabular-nums;
}
.rank-list li:nth-child(1) .rank-no{background:var(--c-primary);color:#fff;}
.rank-list li:nth-child(2) .rank-no{background:#DAD2FF;color:#4A2FD6;}
.rank-list li:nth-child(3) .rank-no{background:#E3F8F5;color:#0E8E83;}
.rank-list a{font-size:14.5px;color:var(--c-body);line-height:1.6;display:block;}
.rank-list a:hover{color:var(--c-primary);}

/* CTA band */
.cta-wrap{padding:0 0 var(--gap-section);}
.cta-band{
  background:var(--c-dark);border-radius:20px;padding:44px 48px;color:#fff;
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,74,255,.5),rgba(109,74,255,0) 68%);
}
.cta-band h2{color:#fff;font-size:30px;line-height:1.32;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.8;}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-top:22px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:rgba(255,255,255,.86);}
.cta-points svg{width:16px;height:16px;color:var(--c-accent);flex:0 0 auto;}
.price-card{
  position:relative;background:#fff;border-radius:var(--r-card);padding:26px 24px;color:var(--c-ink);
  box-shadow:0 24px 48px rgba(0,0,0,.28);
}
.price-card .price-tag{position:absolute;top:-12px;right:20px;}
.price-card .amount{display:flex;align-items:baseline;gap:6px;margin:12px 0 4px;color:var(--c-ink);}
.price-card .amount strong{font-size:38px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;}
.price-card .amount span{font-size:14px;color:var(--c-muted);}
.price-card ul{margin:16px 0 20px;display:flex;flex-direction:column;gap:8px;}
.price-card li{font-size:14px;color:var(--c-body);display:flex;gap:8px;align-items:center;}
.price-card li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 auto;}
.price-card .btn{width:100%;height:46px;border-radius:var(--r-input);}

/* footer */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.7);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-text span{color:#B9A8FF;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul li a{font-size:14.5px;color:rgba(255,255,255,.66);line-height:2.1;}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ============ responsive ============ */
@media (max-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:48px;}
}
@media (max-width:1024px){
  :root{--gap-section:64px;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{display:none;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:36px 32px;}
  .cta-band::before{opacity:.6;}
}
@media (max-width:768px){
  :root{--gap-section:48px;}
  .container{padding:0 20px;}
  .header-inner{height:60px;}
  .main-nav,.search-box,.header-actions .btn-primary{display:none;}
  .burger{display:flex;margin-left:auto;}
  .article-hero{padding:26px 0 54px;}
  .article-region{padding:36px 0 var(--gap-section);}
  .article-lead{padding:16px 18px;font-size:16px;}
  .article-body h2{font-size:22px;}
  .related-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .article-hero h1{font-size:24px;}
  .article-meta{gap:8px 14px;font-size:13px;}
  .back-row .btn{width:100%;}
  .cta-band{padding:28px 22px;border-radius:16px;}
  .price-card .amount strong{font-size:32px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#6D4AFF;
  --c-primary-700:#5B36F0;
  --c-primary-soft:#EFEBFF;
  --c-primary-mist:#F7F5FF;
  --c-accent:#17C6B8;
  --c-accent-soft:#E4F8F6;
  --c-warn:#FFA51F;
  --c-warn-soft:#FFF3E2;
  --c-warn-ink:#8A5300;
  --c-deep:#15122B;
  --c-deep-2:#1E1A3C;
  --c-bg:#F5F6FB;
  --c-card:#FFFFFF;
  --c-line:#E7E9F2;
  --c-line-strong:#DADDF0;
  --c-ink:#141628;
  --c-body:#525873;
  --c-muted:#8C93AB;
  --c-success:#1FA971;
  --c-danger:#E5484D;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,40,.04), 0 8px 24px rgba(20,22,40,.06);
  --sh-2:0 12px 32px rgba(20,22,40,.12);
  --sp-section:88px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select{font:inherit;color:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.num{font-variant-numeric:tabular-nums;}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-input);
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  white-space:nowrap;
  border:1px solid transparent;
  transition:all .18s ease;
}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  box-shadow:0 6px 16px rgba(109,74,255,.24);
}
.btn-primary:hover{background:#7C5CFF;transform:translateY(-1px);box-shadow:0 12px 26px rgba(109,74,255,.3);}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-700);box-shadow:0 6px 14px rgba(109,74,255,.24);}
.btn-ghost{
  background:#fff;
  color:var(--c-ink);
  border-color:var(--c-line-strong);
}
.btn-ghost:hover{border-color:var(--c-primary);background:#F4F2FF;color:var(--c-primary-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);background:#EDE9FF;}
.btn-pill{border-radius:var(--r-pill);}
.btn:disabled,.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-primary);
  padding:6px 0;
}
.btn-text .arrow{transition:transform .18s ease;}
.btn-text:hover{color:var(--c-primary-700);}
.btn-text:hover .arrow{transform:translateX(3px);}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  line-height:1;
  background:var(--c-primary-soft);
  color:var(--c-primary-700);
}
.badge-accent{background:var(--c-accent-soft);color:#0B7F76;}
.badge-warn{background:var(--c-warn-soft);color:var(--c-warn-ink);}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 11px;
  border-radius:var(--r-pill);
  font-size:13px;
  color:var(--c-body);
  background:#F2F3F9;
  border:1px solid var(--c-line);
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  transition:box-shadow .2s ease,border-color .2s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  border-bottom-color:#EDEFF5;
  box-shadow:0 6px 20px rgba(20,22,40,.07);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;
  border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#7C5CFF,#5B36F0);
  box-shadow:0 6px 14px rgba(109,74,255,.28);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{
  font-size:17px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:.2px;
}
.logo-text span{color:var(--c-primary);}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.main-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:68px;
  padding:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--c-body);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;
  bottom:14px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .2s ease;
}
.main-nav a:hover{color:var(--c-primary);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--c-primary);font-weight:700;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:auto;
}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
  width:220px;
  height:42px;
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  background:#F8F9FC;
  transition:width .22s ease,border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.search-box:hover{border-color:var(--c-line-strong);}
.search-box:focus-within{
  width:280px;
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(109,74,255,.12);
}
.search-box svg{
  width:17px;height:17px;margin-left:14px;flex-shrink:0;
  fill:none;stroke:var(--c-muted);stroke-width:1.8;stroke-linecap:round;
}
.search-box input{
  flex:1;
  height:100%;
  min-width:0;
  border:0;
  background:transparent;
  padding:0 14px 0 8px;
  font-size:14px;
  outline:none;
}
.search-box input::placeholder{color:var(--c-muted);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--c-line);
  align-items:center;
  justify-content:center;
  background:#fff;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--c-ink);stroke-width:1.9;fill:none;stroke-linecap:round;}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:#fff;
  padding:14px 0 20px;
}
.mobile-drawer .container{display:flex;flex-direction:column;gap:6px;}
.mobile-drawer a{
  display:block;
  padding:12px 14px;
  border-radius:12px;
  font-size:15px;
  font-weight:500;
  color:var(--c-body);
}
.mobile-drawer a:hover{background:var(--c-primary-mist);color:var(--c-primary);}
.mobile-drawer a.is-active{background:var(--c-primary-soft);color:var(--c-primary-700);font-weight:700;}
.mobile-drawer .btn{margin-top:12px;}
.mobile-drawer.is-open{display:block;}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-section) 0;}
.section-tight{padding:56px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-title{
  font-size:clamp(24px,2.5vw,32px);
  line-height:1.3;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:-.2px;
}
.section-desc{
  margin-top:10px;
  max-width:660px;
  font-size:15px;
  color:var(--c-body);
}
.section-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:1.6px;
  color:var(--c-primary);
  margin-bottom:12px;
}
.section-label::before{
  content:"";
  width:10px;height:10px;
  border-radius:3px;
  background:var(--c-primary);
}

/* ============ 分类小 Hero ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(109,74,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(109,74,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.cat-hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  padding:64px 0 72px;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--c-muted);
  margin-bottom:18px;
}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C6CBDD;}
.crumb .current{color:var(--c-primary-700);font-weight:600;}
.cat-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.2;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:-.6px;
}
.cat-hero h1 em{font-style:normal;color:var(--c-primary);}
.cat-hero-lead{
  margin-top:20px;
  font-size:17px;
  line-height:1.85;
  color:var(--c-body);
  max-width:600px;
}
.cat-hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:36px;
  margin-top:38px;
  padding-top:26px;
  border-top:1px dashed var(--c-line-strong);
}
.hero-stat b{
  display:block;
  font-size:26px;
  font-weight:700;
  color:var(--c-ink);
  line-height:1.2;
}
.hero-stat span{font-size:14px;color:var(--c-muted);}
.cat-hero-figure{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--sh-1);
  border:1px solid var(--c-line);
  aspect-ratio:4/3;
  background:#EDEFF7;
}
.cat-hero-figure img{width:100%;height:100%;object-fit:cover;}
.cat-hero-figure::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(21,18,43,0) 45%,rgba(21,18,43,.62) 100%);
}
.figure-caption{
  position:absolute;
  left:22px;right:22px;bottom:20px;
  z-index:2;
  color:#fff;
}
.figure-caption strong{display:block;font-size:16px;font-weight:700;}
.figure-caption span{font-size:13px;color:rgba(255,255,255,.78);}
.figure-flag{
  position:absolute;
  top:18px;left:18px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 13px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);
  color:var(--c-primary-700);
  font-size:13px;
  font-weight:700;
}

/* ============ 筛选条 ============ */
.filter-bar{
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
  padding:16px 20px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  position:sticky;
  top:80px;
  z-index:20;
}
.chip-group{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  height:38px;
  padding:0 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:#fff;
  font-size:14px;
  color:var(--c-body);
  transition:all .18s ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:#F7F5FF;}
.chip.is-active{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
  font-weight:600;
  box-shadow:0 6px 14px rgba(109,74,255,.24);
}
.filter-right{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.filter-right label{font-size:14px;color:var(--c-muted);}
.select-wrap{position:relative;}
.select-wrap select{
  height:38px;
  padding:0 38px 0 14px;
  border-radius:var(--r-input);
  border:1px solid var(--c-line);
  background:#fff;
  font-size:14px;
  color:var(--c-ink);
  appearance:none;
  cursor:pointer;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.select-wrap select:hover{border-color:var(--c-line-strong);}
.select-wrap select:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(109,74,255,.12);outline:none;}
.select-wrap::after{
  content:"";
  position:absolute;
  right:15px;top:50%;
  width:8px;height:8px;
  border-right:1.8px solid var(--c-muted);
  border-bottom:1.8px solid var(--c-muted);
  transform:translateY(-70%) rotate(45deg);
  pointer-events:none;
}

/* ============ 卡片网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:32px;
}
.card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:#DFD9FF;
}
.card:hover .card-title{color:var(--c-primary);}
.card-cover{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EDEFF7;
}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-cover img{transform:scale(1.04);}
.card-cover .badge{
  position:absolute;
  top:12px;left:12px;
  background:rgba(255,255,255,.94);
  color:var(--c-primary-700);
  box-shadow:0 4px 10px rgba(20,22,40,.12);
}
.card-body{
  display:flex;
  flex-direction:column;
  flex:1;
  padding:22px 24px 24px;
}
.card-title{
  font-size:19px;
  line-height:1.45;
  font-weight:600;
  color:var(--c-ink);
  transition:color .18s ease;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-text{
  margin-top:12px;
  font-size:15px;
  line-height:1.75;
  color:var(--c-body);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-points{
  margin-top:16px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.card-points li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--c-body);
}
.card-points li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--c-accent);
}
.card-meta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:auto;
  padding-top:18px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-muted);
}
.card-meta .dot{width:4px;height:4px;border-radius:50%;background:#CDD2E2;}
.card-meta .more{
  margin-left:auto;
  color:var(--c-primary);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:5px;
}
.card-meta .more .arrow{transition:transform .18s ease;}
.card:hover .card-meta .more .arrow{transform:translateX(3px);}

/* ============ 分页 ============ */
.pagination{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap;
  margin-top:44px;
}
.page-link{
  min-width:44px;
  height:44px;
  padding:0 16px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-input);
  border:1px solid var(--c-line);
  background:#fff;
  font-size:15px;
  color:var(--c-body);
  transition:all .18s ease;
}
.page-link:hover{border-color:var(--c-primary);color:var(--c-primary);background:#F7F5FF;}
.page-link.is-current{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
  font-weight:700;
  box-shadow:0 8px 18px rgba(109,74,255,.24);
}
.page-link.is-disabled{opacity:.45;cursor:not-allowed;}
.page-ellipsis{color:var(--c-muted);padding:0 4px;}

/* ============ 筛选无结果 / 空态 ============ */
.empty-state{
  margin-top:32px;
  padding:60px 24px;
  text-align:center;
  background:#fff;
  border:1px dashed var(--c-line-strong);
  border-radius:var(--r-card);
  display:none;
}
.empty-state.is-visible{display:block;}
.empty-state svg{width:96px;height:96px;margin:0 auto 20px;stroke:var(--c-line-strong);fill:none;stroke-width:1.4;}
.empty-state strong{display:block;font-size:18px;color:var(--c-ink);font-weight:700;}
.empty-state p{margin:10px auto 22px;max-width:420px;font-size:14px;color:var(--c-muted);}

/* ============ 更新提醒 ============ */
.subscribe{
  background:var(--c-primary-mist);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.subscribe-inner{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  padding:64px 0;
}
.subscribe h2{
  font-size:clamp(22px,2.2vw,28px);
  line-height:1.35;
  font-weight:700;
  color:var(--c-ink);
}
.subscribe p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--c-body);}
.subscribe-list{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.subscribe-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  color:var(--c-body);
}
.subscribe-list li::before{
  content:"";
  position:absolute;
  left:0;top:7px;
  width:16px;height:16px;
  border-radius:50%;
  background:var(--c-accent-soft);
}
.subscribe-list li::after{
  content:"";
  position:absolute;
  left:5px;top:12px;
  width:6px;height:3px;
  border-left:1.6px solid #0B7F76;
  border-bottom:1.6px solid #0B7F76;
  transform:rotate(-45deg);
}
.form-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink);
  margin-bottom:8px;
}
.field input{
  width:100%;
  height:44px;
  padding:0 14px;
  border-radius:var(--r-input);
  border:1px solid var(--c-line);
  background:#FBFBFE;
  font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field input::placeholder{color:var(--c-muted);}
.field input:hover{border-color:var(--c-line-strong);}
.field input:focus{
  outline:none;
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(109,74,255,.12);
}
.field.has-error input{border-color:var(--c-danger);box-shadow:0 0 0 3px rgba(229,72,77,.1);}
.field .hint{margin-top:7px;font-size:13px;color:var(--c-danger);display:none;}
.field.has-error .hint{display:block;}
.form-note{margin-top:14px;font-size:13px;color:var(--c-muted);}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#DFD9FF;box-shadow:var(--sh-1);}
.faq-item summary{
  position:relative;
  cursor:pointer;
  list-style:none;
  padding:20px 58px 20px 24px;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:26px;top:26px;
  width:9px;height:9px;
  border-right:2px solid var(--c-muted);
  border-bottom:2px solid var(--c-muted);
  transform:rotate(45deg);
  transition:transform .22s ease,border-color .18s ease;
}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary::after{
  transform:rotate(-135deg);
  border-color:var(--c-primary);
}
.faq-body{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--c-body);
  background:var(--c-primary-mist);
  border-top:1px solid var(--c-line);
  padding-top:18px;
}

/* ============ 深色 CTA ============ */
.cta-band{
  position:relative;
  background:var(--c-deep);
  color:#fff;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.18;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(560px 320px at 12% 0%,rgba(109,74,255,.42),transparent 70%);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1fr 400px;
  gap:56px;
  align-items:center;
  padding:76px 0;
}
.cta-band h2{
  font-size:clamp(24px,2.8vw,34px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.3px;
}
.cta-band .cta-lead{margin-top:16px;font-size:16px;line-height:1.9;color:rgba(255,255,255,.76);max-width:560px;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-points li{
  display:flex;
  gap:12px;
  font-size:15px;
  color:rgba(255,255,255,.86);
}
.cta-points .ic{
  flex-shrink:0;
  width:22px;height:22px;
  border-radius:7px;
  display:grid;place-items:center;
  background:rgba(23,198,184,.2);
  border:1px solid rgba(23,198,184,.4);
}
.cta-points .ic svg{width:12px;height:12px;stroke:#4FE3D6;stroke-width:2.4;fill:none;stroke-linecap:round;stroke-linejoin:round;}
.price-card{
  background:#fff;
  color:var(--c-ink);
  border-radius:20px;
  padding:28px;
  box-shadow:0 24px 48px rgba(0,0,0,.28);
  border:1px solid rgba(255,255,255,.08);
}
.price-card .plan{font-size:15px;color:var(--c-body);font-weight:600;}
.price-card .amount{
  display:flex;
  align-items:baseline;
  gap:8px;
  margin-top:10px;
}
.price-card .amount b{
  font-size:40px;
  font-weight:700;
  letter-spacing:-1px;
  color:var(--c-ink);
  line-height:1;
}
.price-card .amount span{font-size:14px;color:var(--c-muted);}
.price-card .save{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--c-warn-soft);
  color:var(--c-warn-ink);
  font-size:13px;
  font-weight:700;
  margin-top:14px;
}
.price-card ul{margin:22px 0;display:flex;flex-direction:column;gap:12px;}
.price-card ul li{
  position:relative;
  padding-left:24px;
  font-size:14px;
  color:var(--c-body);
}
.price-card ul li::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--c-primary-soft);
}
.price-card ul li::after{
  content:"";
  position:absolute;
  left:4px;top:10px;
  width:6px;height:3px;
  border-left:1.7px solid var(--c-primary-700);
  border-bottom:1.7px solid var(--c-primary-700);
  transform:rotate(-45deg);
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-deep);
  color:rgba(255,255,255,.66);
  padding:64px 0 28px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-text span{color:#A99BFF;}
.footer-brand p{line-height:1.9;max-width:340px;color:rgba(255,255,255,.6);}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:rgba(255,255,255,.66);}
.footer-col a:hover{color:#A99BFF;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.48);
}

/* ============ 响应式 ============ */
@media (max-width:1120px){
  .search-box{width:180px;}
  .search-box:focus-within{width:230px;}
  .header-inner{gap:18px;}
}
@media (max-width:1024px){
  :root{--sp-section:64px;}
  .main-nav{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;justify-content:space-between;}
  .header-actions{margin-left:auto;}
  .cat-hero-inner{grid-template-columns:1fr;gap:36px;padding:44px 0 52px;}
  .cat-hero-figure{aspect-ratio:16/10;order:-1;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .subscribe-inner{grid-template-columns:1fr;gap:32px;padding:52px 0;}
  .cta-inner{grid-template-columns:1fr;gap:36px;padding:60px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .filter-bar{position:static;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .card-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:26px;}
  .hero-stats{gap:24px;}
  .hero-stat b{font-size:22px;}
  .filter-right{margin-left:0;width:100%;justify-content:space-between;}
  .cta-inner{padding:52px 0;}
  .faq-item summary{font-size:16px;padding:18px 50px 18px 20px;}
  .faq-item summary::after{right:22px;top:24px;}
}
@media (max-width:520px){
  :root{--sp-section:48px;}
  .container{padding:0 16px;}
  .btn{width:100%;}
  .btn-text{width:auto;}
  .cat-hero-actions .btn{width:100%;}
  .logo-text{font-size:15px;}
  .hero-stats{flex-direction:column;gap:18px;}
  .pagination{gap:8px;}
  .page-link{padding:0 12px;min-width:40px;height:40px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;}
  .price-card .amount b{font-size:34px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#6D4AFF;
  --c-primary-hover:#7C5CFF;
  --c-primary-deep:#5A38F0;
  --c-primary-soft:#EFEBFF;
  --c-accent:#17C6B8;
  --c-accent-soft:#E4F8F6;
  --c-amber:#FFA51F;
  --c-amber-soft:#FFF3E2;
  --c-ink:#141628;
  --c-body:#525873;
  --c-muted:#8C93AB;
  --c-line:#E7E9F2;
  --c-line-strong:#DADDF0;
  --c-bg:#F5F6FB;
  --c-soft:#FAFBFF;
  --c-card:#FFFFFF;
  --c-dark:#15122B;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(20,22,40,.04),0 8px 24px rgba(20,22,40,.06);
  --sh-2:0 12px 32px rgba(20,22,40,.12);
  --container:1200px;
  --sp-section:88px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,sans-serif;
  background:var(--c-bg);
  color:var(--c-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input{font:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4{color:var(--c-ink);font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.2}
h2{font-size:clamp(24px,2.6vw,30px)}
h3{font-size:20px;font-weight:600;line-height:1.4}
p{line-height:1.9}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
::selection{background:var(--c-primary);color:#fff}

.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.04em;margin-bottom:14px}
.section-head .eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-primary)}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--c-body);font-size:16px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-input);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(109,74,255,.24)}
.btn-primary:hover{background:var(--c-primary-hover);transform:translateY(-1px);box-shadow:0 10px 24px rgba(109,74,255,.32)}
.btn-primary:active{background:var(--c-primary-deep);transform:translateY(0);box-shadow:0 4px 12px rgba(109,74,255,.22)}
.btn-ghost{background:#fff;color:var(--c-ink);border-color:var(--c-line-strong)}
.btn-ghost:hover{border-color:var(--c-primary);background:#F4F2FF;color:var(--c-primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0);background:#EDE9FF}
.btn-pill{border-radius:999px}
.btn-block{width:100%}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary)}
.btn-text .ar{transition:transform .2s ease}
.btn-text:hover{color:var(--c-primary-deep)}
.btn-text:hover .ar{transform:translateX(3px)}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary)}
.badge-amber{background:var(--c-amber-soft);color:#B26A00}
.badge-accent{background:var(--c-accent-soft);color:#0E8C81}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(20,22,40,.72);color:#fff;backdrop-filter:blur(4px)}
.tag-light{background:var(--c-primary-soft);color:var(--c-primary);backdrop-filter:none}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid transparent;transition:box-shadow .25s ease,border-color .25s ease}
.site-header.is-scrolled{border-bottom-color:#EDEFF5;box-shadow:0 8px 24px rgba(20,22,40,.06)}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:36px;height:36px;border-radius:11px;background:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;box-shadow:0 6px 14px rgba(109,74,255,.28)}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;white-space:nowrap}
.logo-text span{color:var(--c-primary);margin-left:2px}

.main-nav{display:flex;align-items:center;gap:4px;height:68px}
.main-nav a{position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;font-size:15px;font-weight:500;color:var(--c-body)}
.main-nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;border-radius:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:center;transition:transform .2s ease}
.main-nav a:hover{color:var(--c-primary)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--c-primary);font-weight:600}
.main-nav a.is-active::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:14px}
.search-box{position:relative;width:220px;transition:width .25s ease}
.search-box:focus-within{width:280px}
.search-box svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--c-muted);pointer-events:none}
.search-box input{width:100%;height:40px;padding:0 14px 0 38px;border:1px solid var(--c-line);border-radius:999px;background:#F8F9FD;font-size:14px;color:var(--c-ink);transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.search-box input::placeholder{color:var(--c-muted)}
.search-box input:hover{border-color:var(--c-line-strong)}
.search-box input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(109,74,255,.12)}

.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);background:#fff;padding:11px 10px;flex-direction:column;justify-content:space-between}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .25s ease,opacity .2s ease}
.nav-toggle.is-active span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

.mobile-drawer{position:fixed;top:60px;left:0;right:0;z-index:79;background:#fff;border-bottom:1px solid var(--c-line);box-shadow:0 18px 36px rgba(20,22,40,.12);padding:12px 16px 20px;display:flex;flex-direction:column;gap:6px;opacity:0;visibility:hidden;transform:translateY(-12px);transition:opacity .22s ease,transform .22s ease,visibility .22s}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-drawer a.d-link{display:block;padding:12px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--c-ink)}
.mobile-drawer a.d-link:hover{background:var(--c-bg);color:var(--c-primary)}
.mobile-drawer a.d-link.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.mobile-drawer .btn{margin-top:10px}

/* ============ 面包屑 ============ */
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--c-muted);margin-bottom:20px}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:#C6CBDA}
.crumb .current{color:var(--c-primary);font-weight:600}

/* ============ 页首区 ============ */
.page-hero{
  position:relative;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  padding:44px 0 56px;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(#F0F1F8 1px,transparent 1px),linear-gradient(90deg,#F0F1F8 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.55;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:center}
.hero-copy h1{margin:16px 0 18px}
.hero-copy h1 em{font-style:normal;color:var(--c-primary)}
.hero-lead{font-size:17px;line-height:1.9;color:var(--c-body);max-width:620px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stat{flex:1 1 150px;background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:16px 18px;box-shadow:var(--sh-1)}
.stat b{display:block;font-size:26px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1.2}
.stat b i{font-style:normal;font-size:15px;color:var(--c-accent);margin-left:2px}
.stat span{font-size:13px;color:var(--c-muted)}
.hero-figure{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--sh-1);aspect-ratio:4/3;background:var(--c-bg)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure .float-badge{
  position:absolute;left:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 14px;border-radius:999px;
  background:#fff;box-shadow:0 8px 20px rgba(20,22,40,.16);
  font-size:13px;font-weight:600;color:var(--c-ink);
}
.hero-figure .float-badge i{width:8px;height:8px;border-radius:50%;background:var(--c-accent);font-style:normal}

/* ============ 双栏主布局 ============ */
.layout{display:grid;grid-template-columns:264px 1fr;gap:48px;align-items:start}
.side-nav{position:sticky;top:88px}
.side-nav .side-title{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--c-muted);margin-bottom:12px;padding-left:14px}
.side-nav ul{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:10px;box-shadow:var(--sh-1)}
.side-nav li+li{margin-top:2px}
.side-nav a{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;font-size:14px;font-weight:500;color:var(--c-body);position:relative}
.side-nav a i{width:6px;height:6px;border-radius:50%;background:var(--c-line-strong);flex-shrink:0;transition:background .2s ease,transform .2s ease}
.side-nav a:hover{background:var(--c-bg);color:var(--c-ink)}
.side-nav a:hover i{background:var(--c-primary)}
.side-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.side-nav a.is-active i{background:var(--c-primary);transform:scale(1.35)}
.side-cta{margin-top:20px;background:var(--c-dark);border-radius:var(--r-card);padding:22px;color:rgba(255,255,255,.74)}
.side-cta h4{color:#fff;font-size:16px;margin-bottom:8px}
.side-cta p{font-size:13px;line-height:1.7;margin-bottom:16px}
.side-cta .btn{height:42px;font-size:14px}

/* ============ 分组内容块 ============ */
.content-col{display:flex;flex-direction:column;gap:72px}
.group-head{margin-bottom:28px}
.group-head .group-index{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:26px;padding:0 10px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:14px}
.group-head h2{position:relative;padding-left:16px;margin-bottom:12px}
.group-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--c-primary)}
.group-head p{max-width:720px;font-size:15.5px;line-height:1.9}

.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DBDFF0}
.card:hover h3{color:var(--c-primary)}
.card-link{display:flex;flex-direction:column;height:100%}
.card-thumb{position:relative;aspect-ratio:16/9;background:var(--c-bg);overflow:hidden}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-thumb .tag{position:absolute;left:12px;top:12px}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1}
.card-body h3{margin-bottom:10px;transition:color .2s ease}
.card-body p{font-size:14.5px;line-height:1.85;color:var(--c-body)}
.mini-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.mini-list li{position:relative;padding-left:22px;font-size:14px;color:var(--c-body);line-height:1.7}
.mini-list li::before{
  content:"";position:absolute;left:2px;top:8px;width:10px;height:6px;
  border-left:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);
  transform:rotate(-45deg);border-radius:1px;
}
.card-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted)}
.card-foot .arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:13.5px}
.card-foot .arrow .ar{transition:transform .2s ease}
.card:hover .card-foot .arrow .ar{transform:translateX(3px)}

/* ============ 等级速览 ============ */
.tier-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch}
.tier{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.tier:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.tier h3{margin-bottom:8px}
.tier .tier-desc{font-size:14px;color:var(--c-muted);margin-bottom:18px;min-height:44px}
.tier .price{display:flex;align-items:baseline;gap:6px;margin-bottom:20px;font-variant-numeric:tabular-nums}
.tier .price b{font-size:30px;font-weight:700;color:var(--c-ink);line-height:1}
.tier .price span{font-size:13px;color:var(--c-muted)}
.tier ul{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}
.tier ul li{position:relative;padding-left:24px;font-size:14.5px;line-height:1.7}
.tier ul li::before{
  content:"";position:absolute;left:2px;top:8px;width:11px;height:6px;
  border-left:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);transform:rotate(-45deg)
}
.tier .btn{margin-top:auto}
.tier.is-featured{
  border-color:var(--c-primary);border-top:3px solid var(--c-primary);
  transform:translateY(-8px);box-shadow:0 18px 40px rgba(109,74,255,.16);
}
.tier.is-featured:hover{transform:translateY(-12px)}
.tier.is-featured .ribbon{
  position:absolute;right:20px;top:-13px;display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--c-amber);color:#3D2500;font-size:12.5px;font-weight:700;
  box-shadow:0 6px 14px rgba(255,165,31,.32)
}

/* ============ 流程步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
.step{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh-1);position:relative;transition:transform .25s ease,box-shadow .25s ease}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step .num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;margin-bottom:16px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;line-height:1.8;color:var(--c-body)}
.steps-line{height:2px;background:linear-gradient(90deg,var(--c-primary-soft),var(--c-accent-soft));border-radius:2px;margin:0 0 28px}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;margin:0 auto}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:#DBDFF0;box-shadow:var(--sh-1)}
.faq-item.is-open{border-color:var(--c-primary);box-shadow:0 10px 26px rgba(109,74,255,.10)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;padding:20px 22px;font-size:16px;font-weight:600;color:var(--c-ink);transition:color .2s ease}
.faq-q:hover{color:var(--c-primary)}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-arrow{flex-shrink:0;width:20px;height:20px;stroke:var(--c-muted);transition:transform .28s ease,stroke .2s ease}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);stroke:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a .inner{padding:0 22px 22px;background:#F7F5FF;border-top:1px solid #EDE9FF;padding-top:18px;font-size:15px;line-height:1.9;color:var(--c-body)}

/* ============ CTA 深色区 ============ */
.cta-block{background:var(--c-dark);color:rgba(255,255,255,.74);position:relative;overflow:hidden}
.cta-block::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center;padding:72px 0}
.cta-inner h2{color:#fff;margin-bottom:14px}
.cta-inner .cta-lead{font-size:16px;line-height:1.9;max-width:560px}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:rgba(255,255,255,.86)}
.cta-points li i{
  flex-shrink:0;width:20px;height:20px;border-radius:50%;background:rgba(23,198,184,.18);
  display:inline-flex;align-items:center;justify-content:center;margin-top:5px;
}
.cta-points li i::after{content:"";width:9px;height:5px;border-left:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);transform:rotate(-45deg) translateY(-1px)}
.price-card{background:#fff;border-radius:20px;padding:30px 28px;box-shadow:0 24px 60px rgba(0,0,0,.32)}
.price-card .pc-label{font-size:13px;font-weight:600;color:var(--c-primary);margin-bottom:12px}
.price-card .pc-price{display:flex;align-items:baseline;gap:8px;color:var(--c-ink);font-variant-numeric:tabular-nums}
.price-card .pc-price b{font-size:40px;font-weight:700;line-height:1}
.price-card .pc-price span{font-size:14px;color:var(--c-muted)}
.price-card .pc-note{font-size:13.5px;color:var(--c-muted);margin:12px 0 20px;line-height:1.7}
.price-card ul{display:flex;flex-direction:column;gap:9px;margin-bottom:22px}
.price-card ul li{position:relative;padding-left:22px;font-size:14px;color:var(--c-body)}
.price-card ul li::before{
  content:"";position:absolute;left:2px;top:8px;width:10px;height:6px;
  border-left:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);transform:rotate(-45deg)
}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--c-line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--c-body);max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul li a{font-size:14px;color:var(--c-body)}
.footer-col ul li a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{border-top:1px solid var(--c-line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--c-muted)}

/* ============ 空态与无结果态 ============ */
.state-empty{border:1px dashed var(--c-line-strong);border-radius:var(--r-card);background:#fff;padding:52px 24px;text-align:center}
.state-empty .geo{margin:0 auto 16px;width:64px;height:64px;display:flex;align-items:center;justify-content:center;border-radius:18px;background:var(--c-bg);border:1px solid var(--c-line)}
.state-empty h3{margin-bottom:8px}
.state-empty p{font-size:14.5px;color:var(--c-muted);margin-bottom:20px}
.state-filter{background:var(--c-primary-soft);border-radius:var(--r-card);padding:28px;text-align:center;color:var(--c-primary)}
.state-filter p{font-size:15px;color:#4A3FA8;margin-bottom:16px}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .hero-grid{gap:36px}
  .layout{grid-template-columns:230px 1fr;gap:36px}
}
@media (max-width:1024px){
  :root{--sp-section:64px}
  .main-nav{display:none}
  .search-box{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:60px}
  .mobile-drawer{top:60px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-figure{max-width:560px;aspect-ratio:16/10}
  .layout{grid-template-columns:1fr}
  .side-nav{position:static}
  .side-nav ul{display:flex;flex-wrap:wrap;gap:8px;padding:12px}
  .side-nav li+li{margin-top:0}
  .side-nav a{padding:8px 14px;background:var(--c-bg)}
  .side-cta{display:none}
  .content-col{gap:56px}
  .tier-grid{grid-template-columns:1fr 1fr}
  .tier.is-featured{transform:none}
  .tier.is-featured:hover{transform:translateY(-4px)}
  .tier-grid .tier:nth-child(3){grid-column:span 2}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1fr;gap:36px;padding:56px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sp-section:48px}
  .container{padding:0 16px}
  .page-hero{padding:32px 0 44px}
  .hero-stats{gap:10px}
  .stat{flex:1 1 100%}
  .card-grid{grid-template-columns:1fr}
  .tier-grid{grid-template-columns:1fr}
  .tier-grid .tier:nth-child(3){grid-column:span 1}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .group-head h2{font-size:23px}
  .cta-inner{padding:48px 0}
}
@media (max-width:520px){
  .logo-text{font-size:15.5px}
  .btn{width:100%}
  .btn-inline-fix{width:auto}
  .hero-figure{aspect-ratio:4/3}
  .card-body{padding:18px}
  .price-card{padding:24px 20px}
  .price-card .pc-price b{font-size:34px}
  .faq-q{padding:16px;font-size:15px}
  .faq-a .inner{padding:14px 16px 18px}
}