/* roulang page: index */
:root{
  --violet:#4C1D95;
  --violet-deep:#3B1580;
  --cyan:#0EA5A4;
  --gold:#F5B840;
  --bg:#FAF8FF;
  --dark:#140F2E;
  --card:#FFFFFF;
  --alt:#F3EFFF;
  --text:#1A1433;
  --text-2:#5A5470;
  --text-3:#8B85A3;
  --border:#E6E1F2;
  --grad:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --shadow:0 8px 24px rgba(76,29,149,.08);
  --shadow-hover:0 16px 40px rgba(76,29,149,.16);
  --section-y:88px;
  --font:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .22s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--section-y) 0;}
.section-alt{background:var(--alt);}
.section-dark{background:var(--dark);color:#fff;}
.num{font-variant-numeric:tabular-nums;}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(76,29,149,.10);}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:72px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:12px;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;flex-shrink:0;
}
.logo-mark::before{
  content:"";position:absolute;width:26px;height:26px;
  border:1.5px solid rgba(255,255,255,.7);border-radius:50%;
  top:-6px;left:12px;
}
.logo-mark::after{
  content:"";position:absolute;width:5px;height:5px;border-radius:50%;
  background:var(--gold);top:9px;right:8px;
}
.logo-text{
  font-size:17px;font-weight:800;letter-spacing:.5px;
  color:var(--text);white-space:nowrap;
}
.logo-text em{font-style:normal;color:var(--violet);}
.nav-channels{
  display:flex;align-items:center;gap:2px;
  margin-left:auto;
  background:var(--alt);
  padding:5px;border-radius:999px;
}
.nav-channels a{
  display:block;
  font-size:13.5px;font-weight:600;color:var(--text-2);
  padding:8px 13px;border-radius:999px;
  white-space:nowrap;
  transition:background .22s ease,color .22s ease;
}
.nav-channels a:hover{color:var(--violet);background:#fff;}
.nav-channels a.active{background:var(--violet);color:#fff;}
.header-cta{
  flex-shrink:0;
  height:44px;padding:0 24px;border-radius:999px;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--violet);color:#fff;
  font-size:14px;font-weight:700;
  transition:transform .2s ease,filter .2s ease,box-shadow .2s ease;
}
.header-cta:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--shadow);}
.header-cta:active{transform:translateY(1px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--alt);align-items:center;justify-content:center;flex-shrink:0;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--violet);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--violet);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,15,46,.5);
  opacity:0;visibility:hidden;transition:.28s ease;z-index:120;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:#fff;z-index:130;
  transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:20px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--border);}
.drawer-close{width:38px;height:38px;border-radius:50%;background:var(--alt);color:var(--violet);font-size:20px;line-height:1;}
.drawer-nav{display:flex;flex-direction:column;padding:12px 0;}
.drawer-nav a{
  font-size:17px;font-weight:600;line-height:56px;color:var(--text);
  border-bottom:1px solid var(--border);
}
.drawer-nav a.active{color:var(--violet);}
.drawer-foot{margin-top:auto;padding-top:20px;display:grid;gap:10px;}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:700;
  transition:transform .2s ease,filter .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  border:1.5px solid transparent;
}
.btn-primary{background:var(--violet);color:#fff;}
.btn-primary:hover{background:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);transform:translateY(-2px);box-shadow:0 12px 28px rgba(76,29,149,.28);}
.btn-outline{border-color:var(--cyan);color:var(--cyan);background:transparent;}
.btn-outline:hover{background:var(--cyan);color:#fff;transform:translateY(-2px);}
.btn-ghost{color:#fff;padding:0 6px;height:auto;font-weight:600;}
.btn-ghost:hover{color:var(--gold);}
.btn-light{background:#fff;color:var(--violet);}
.btn-light:hover{filter:brightness(1.04);transform:translateY(-2px);}
.btn:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}

/* ============ HERO ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--dark);color:#fff;
  padding:76px 0 88px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 22%,rgba(255,255,255,.65),transparent 60%),
    radial-gradient(1.4px 1.4px at 28% 68%,rgba(255,255,255,.45),transparent 60%),
    radial-gradient(1.8px 1.8px at 62% 14%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(1.3px 1.3px at 82% 42%,rgba(255,255,255,.4),transparent 60%),
    radial-gradient(1.5px 1.5px at 46% 84%,rgba(255,255,255,.35),transparent 60%);
  opacity:.5;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;
  width:820px;height:820px;border-radius:50%;
  border:1px solid rgba(255,255,255,.10);
  top:-320px;right:-260px;pointer-events:none;
}
.hero-arc{
  position:absolute;width:560px;height:560px;border-radius:50%;
  border:1px solid rgba(14,165,164,.22);
  bottom:-300px;left:-180px;pointer-events:none;
}
.hero-glow{
  position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,40,217,.42) 0%,rgba(14,165,164,.16) 48%,transparent 70%);
  top:-140px;right:6%;filter:blur(10px);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.32fr 1fr;gap:56px;align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  border:1px solid rgba(14,165,164,.55);
  background:rgba(14,165,164,.12);
  font-size:13px;font-weight:600;color:#9FE9E7;
  margin-bottom:22px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--gold);display:inline-block;font-style:normal;}
.hero h1{
  font-size:clamp(30px,4vw,48px);
  line-height:1.2;font-weight:800;letter-spacing:.5px;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:#C4B5FD;}
.hero-sub{
  font-size:16px;line-height:1.8;color:rgba(255,255,255,.76);
  max-width:560px;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:34px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;}
.stat-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.05);
  font-size:12px;color:rgba(255,255,255,.72);
}
.stat-pill b{color:var(--gold);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;}
.hero-visual{position:relative;}
.hero-visual::before{
  content:"";position:absolute;inset:-18px;border-radius:36px;
  background:linear-gradient(135deg,rgba(109,40,217,.55),rgba(14,165,164,.35));
  filter:blur(24px);z-index:0;
}
.hero-visual img{
  position:relative;z-index:1;
  width:100%;aspect-ratio:4/5;object-fit:cover;
  border-radius:28px;
  border:1px solid rgba(255,255,255,.14);
}
.hero-visual-fade{
  position:absolute;left:0;right:0;bottom:0;height:40%;
  border-radius:0 0 28px 28px;
  background:linear-gradient(180deg,rgba(20,15,46,0) 0%,rgba(20,15,46,.82) 100%);
  z-index:2;
}

/* ============ VALUE STRIP ============ */
.value-list{border-top:1px solid var(--border);}
.value-row{
  display:grid;grid-template-columns:300px 1fr;gap:48px;align-items:center;
  padding:40px 0;border-bottom:1px solid var(--border);
}
.value-row.reverse{grid-template-columns:1fr 300px;}
.value-row.reverse .value-media{order:2;}
.value-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-md);border:1px solid var(--border);
  box-shadow:var(--shadow);
}
.value-index{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1px;
  color:var(--cyan);margin-bottom:8px;
}
.value-body h3{font-size:20px;font-weight:600;margin-bottom:10px;line-height:1.45;}
.value-body p{font-size:15px;color:var(--text-2);line-height:1.8;max-width:640px;}

/* ============ SECTION HEAD ============ */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;letter-spacing:.5px;
}
.section-head p{font-size:15px;color:var(--text-2);margin-top:8px;max-width:640px;}
.more-link{
  display:inline-flex;align-items:center;gap:6px;flex-shrink:0;
  font-size:14px;font-weight:700;color:var(--violet);
  border-bottom:1.5px solid transparent;padding-bottom:2px;
}
.more-link:hover{color:var(--cyan);border-bottom-color:var(--cyan);}

/* ============ SHOTS CAROUSEL ============ */
.shots-wrap{position:relative;}
.shots-track{
  display:flex;gap:22px;overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:8px 4px 18px;
  scrollbar-width:none;
}
.shots-track::-webkit-scrollbar{display:none;}
.shot{
  flex:0 0 280px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:12px 12px 16px;box-shadow:var(--shadow);
  transition:transform .24s ease,box-shadow .24s ease;
}
.shot:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.shot img{
  width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:16px;
  background:var(--alt);
}
.shot p{font-size:13px;color:var(--text-2);line-height:1.6;margin-top:12px;padding:0 4px;}
.shots-nav{display:flex;gap:10px;}
.circle-btn{
  width:44px;height:44px;border-radius:50%;
  border:1.5px solid var(--border);background:#fff;color:var(--violet);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
  transition:.2s ease;
}
.circle-btn:hover{background:var(--violet);color:#fff;border-color:var(--violet);}
.shots-dots{display:none;justify-content:center;gap:8px;margin-top:14px;}
.shots-dots span{width:8px;height:8px;border-radius:50%;background:var(--border);transition:.2s;}
.shots-dots span.on{background:var(--cyan);width:22px;border-radius:999px;}

/* ============ SYSTEM SPEC ============ */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.spec-card{
  background:var(--alt);border-radius:var(--r-md);
  padding:26px 24px;border:1px solid rgba(76,29,149,.06);
}
.spec-card b{
  display:block;font-size:26px;font-weight:800;color:var(--violet);
  line-height:1.2;font-variant-numeric:tabular-nums;
}
.spec-card em{display:block;font-style:normal;font-size:14px;font-weight:700;margin:8px 0 6px;color:var(--text);}
.spec-card span{font-size:13.5px;color:var(--text-2);line-height:1.7;}
.spec-layout{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}

/* ============ NEWS / CMS ============ */
.news-lead{
  display:grid;grid-template-columns:0.9fr 1.1fr;gap:32px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--shadow);
  transition:transform .24s ease,box-shadow .24s ease;
  margin-bottom:20px;
}
.news-lead:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.news-lead:hover .news-lead-body h3{color:var(--violet);}
.news-lead-media img{
  width:100%;height:100%;min-height:240px;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-md);background:var(--alt);
}
.news-lead-body{display:flex;flex-direction:column;justify-content:center;padding:6px 12px 6px 0;}
.news-lead-body h3{font-size:22px;line-height:1.45;font-weight:700;margin:12px 0 12px;transition:color .2s ease;}
.news-lead-body p{font-size:15px;color:var(--text-2);line-height:1.8;}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  border:1px solid rgba(14,165,164,.55);
  color:var(--cyan);font-size:12px;font-weight:600;
  background:rgba(14,165,164,.06);
  width:max-content;
}
.news-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:18px;font-size:14px;color:var(--text-3);
}
.news-rows{display:grid;gap:0;border-top:1px solid var(--border);}
.news-row{
  display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;
  padding:20px 4px;border-bottom:1px solid var(--border);
  transition:background .2s ease,padding .2s ease;
}
.news-row:hover{background:var(--alt);padding-left:14px;}
.news-row:hover h3{color:var(--violet);}
.news-row h3{font-size:16px;font-weight:600;line-height:1.5;transition:color .2s ease;}
.news-row p{font-size:13.5px;color:var(--text-3);line-height:1.6;margin-top:4px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.news-row-right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.news-row-right time{font-size:14px;color:var(--text-3);}
.arrow{color:var(--cyan);font-size:16px;font-weight:700;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:64px 24px;border:1px dashed var(--border);border-radius:var(--r-lg);
  background:#fff;text-align:center;
}
.empty-state i{
  font-style:normal;font-size:26px;color:var(--gold);margin-bottom:12px;
}
.empty-state strong{font-size:17px;font-weight:700;margin-bottom:6px;}
.empty-state span{font-size:14px;color:var(--text-3);}

/* ============ REVIEWS ============ */
.review-wall{column-count:2;column-gap:24px;}
.review-card{
  break-inside:avoid;margin-bottom:24px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--shadow);
  transition:transform .24s ease,box-shadow .24s ease;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.review-card.featured{
  background:var(--grad);border-color:transparent;color:#fff;
}
.review-card.featured .review-name{color:#fff;}
.review-card.featured .review-text{color:rgba(255,255,255,.86);}
.review-card.featured .avatar{background:rgba(255,255,255,.22);color:#fff;}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;
  background:var(--alt);color:var(--violet);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;flex-shrink:0;
}
.review-name{font-size:15px;font-weight:700;}
.stars{color:var(--gold);font-size:13px;letter-spacing:2px;margin-bottom:10px;}
.review-text{font-size:14.5px;line-height:1.8;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:12px 28px;box-shadow:var(--shadow);
}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;
  font-size:17px;font-weight:600;line-height:1.5;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--violet);}
.faq-icon{
  width:28px;height:28px;border-radius:50%;flex-shrink:0;
  border:1.5px solid var(--border);color:var(--violet);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;line-height:1;
  transition:.24s ease;
}
.faq-item[open] .faq-icon{background:var(--violet);border-color:var(--violet);color:#fff;transform:rotate(180deg);}
.faq-answer{font-size:15px;line-height:1.8;color:var(--text-2);padding:0 44px 22px 0;}

/* ============ CTA ============ */
.cta-card{
  background:var(--grad);
  border-radius:var(--r-lg);
  padding:48px;
  display:grid;grid-template-columns:1.3fr 1fr;gap:32px;align-items:center;
  color:#fff;
  position:relative;overflow:hidden;
}
.cta-card::after{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(255,255,255,.18);right:-160px;top:-160px;
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:800;margin-bottom:12px;}
.cta-card p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.85);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;position:relative;z-index:2;}
.cta-link{
  display:inline-block;margin-top:16px;font-size:13.5px;color:rgba(255,255,255,.82);
  border-bottom:1px solid rgba(255,255,255,.4);padding-bottom:2px;
}
.cta-link:hover{color:#fff;border-bottom-color:#fff;}

/* ============ FOOTER ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;color:rgba(255,255,255,.6);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:var(--cyan);}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:24px 0 32px;font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ DOWNLOAD BAR ============ */
.dl-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:110;
  height:60px;background:#fff;border-top:1px solid var(--border);
  display:flex;align-items:center;gap:12px;padding:0 16px;
  box-shadow:0 -6px 20px rgba(76,29,149,.10);
  opacity:0;visibility:hidden;transform:translateY(100%);
  transition:.3s ease;
}
.dl-bar.show{opacity:1;visibility:visible;transform:translateY(0);}
.dl-bar .btn{flex:1;height:44px;padding:0 14px;font-size:14px;}
.dl-version{
  flex-shrink:0;font-size:12px;font-weight:700;color:var(--violet);
  padding:8px 14px;border-radius:999px;background:var(--alt);
  font-variant-numeric:tabular-nums;
}

/* ============ RESPONSIVE ============ */
@media (max-width:1279px){
  .nav-channels a{font-size:13px;padding:8px 10px;}
  .logo-text{font-size:16px;}
}
@media (max-width:1100px){
  .nav-channels{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{justify-content:space-between;}
  .logo{margin-right:auto;}
}
@media (max-width:1023px){
  :root{--section-y:64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{max-width:420px;margin:0 auto;width:100%;}
  .hero{padding:56px 0 64px;}
  .value-row,.value-row.reverse{grid-template-columns:1fr;gap:24px;}
  .value-row.reverse .value-media{order:0;}
  .spec-layout{grid-template-columns:1fr;gap:32px;}
  .news-lead{grid-template-columns:1fr;}
  .news-lead-media img{min-height:200px;}
  .cta-card{grid-template-columns:1fr;padding:36px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--section-y:48px;}
  .container{padding:0 20px;}
  .hero h1{font-size:30px;}
  .hero-actions .btn{flex:1;min-width:140px;}
  .shots-track{gap:14px;}
  .shot{flex:0 0 76vw;}
  .shots-nav{display:none;}
  .shots-dots{display:flex;}
  .spec-grid{grid-template-columns:1fr;}
  .review-wall{column-count:1;}
  .faq-card{padding:6px 20px;}
  .faq-item summary{font-size:16px;padding:18px 0;}
  .faq-answer{padding-right:0;}
  .news-row{grid-template-columns:1fr;gap:8px;}
  .news-row-right{gap:10px;}
  .footer-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .cta-card{padding:28px;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  body{padding-bottom:0;}
}
@media (max-width:480px){
  .hero::before{opacity:.25;}
  .hero-stats{gap:8px;}
  .stat-pill{font-size:11.5px;padding:7px 12px;}
  .btn{height:44px;padding:0 20px;font-size:14px;}
  .news-lead-body h3{font-size:19px;}
  .dl-version{display:none;}
}

/* roulang page: article */
:root{
  --brand:#4C1D95;
  --brand-2:#6D28D9;
  --aqua:#0EA5A4;
  --gold:#F5B840;
  --bg:#FAF8FF;
  --bg-alt:#F3EFFF;
  --dark:#140F2E;
  --text:#1A1433;
  --muted:#5A5470;
  --weak:#8B85A3;
  --border:#E6E1F2;
  --card:#FFFFFF;
  --ok:#16A34A;
  --warn:#D97706;
  --err:#DC2626;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --shadow:0 8px 24px rgba(76,29,149,.08);
  --shadow-hover:0 16px 40px rgba(76,29,149,.16);
  --grad:linear-gradient(135deg,#6D28D9,#0EA5A4);
  --pad-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--aqua);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 站点头部 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .28s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(76,29,149,.10);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  position:relative;width:34px;height:34px;border-radius:50%;
  background:var(--grad);
  box-shadow:0 6px 16px rgba(76,29,149,.28);
  flex:0 0 auto;
}
.logo-mark::before{
  content:"";position:absolute;inset:7px;border-radius:50%;
  border:1.5px dashed rgba(255,255,255,.75);
}
.logo-mark::after{
  content:"";position:absolute;width:5px;height:5px;border-radius:50%;
  background:var(--gold);right:3px;top:5px;
  box-shadow:-9px 14px 0 -1px rgba(245,184,64,.85);
}
.logo-text{font-size:19px;font-weight:800;letter-spacing:.5px;color:var(--text);white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--brand);}
.nav-channels{
  display:flex;align-items:center;gap:2px;
  margin-left:auto;padding:5px;
  background:var(--bg-alt);border-radius:999px;
}
.nav-channels a{
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;
  font-size:15px;color:var(--muted);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-channels a:hover{color:var(--brand);background:rgba(255,255,255,.9);}
.nav-channels a.active{background:var(--brand);color:#fff;font-weight:600;}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 22px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  white-space:nowrap;transition:.25s ease;
}
.header-cta:hover{background:var(--grad);transform:translateY(-2px);box-shadow:0 10px 24px rgba(76,29,149,.24);}
.header-cta:active{transform:translateY(1px);}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;
  border:1px solid var(--border);background:#fff;border-radius:12px;
  cursor:pointer;padding:0;flex:0 0 auto;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after{
  content:"";position:absolute;left:12px;right:12px;height:2px;
  background:var(--brand);border-radius:2px;transition:.25s ease;
}
.nav-toggle span{top:50%;transform:translateY(-50%);}
.nav-toggle::before{top:15px;}
.nav-toggle::after{bottom:15px;}
.nav-toggle[aria-expanded="true"] span{opacity:0;transform:translateY(-50%) scaleX(.2);}
.nav-toggle[aria-expanded="true"]::before{top:21px;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"]::after{bottom:21px;transform:rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:600;border:0;cursor:pointer;
  transition:transform .2s ease,background .25s ease,color .2s ease,box-shadow .25s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--grad);transform:translateY(-2px);box-shadow:0 14px 30px rgba(76,29,149,.26);}
.btn-ghost{background:#fff;color:var(--aqua);border:1.5px solid var(--aqua);}
.btn-ghost:hover{background:var(--aqua);color:#fff;transform:translateY(-2px);}
.btn-line{background:#fff;color:var(--text);border:1.5px solid var(--border);}
.btn-line:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

/* ============ 文章头部深色区 ============ */
.article-hero{
  position:relative;overflow:hidden;
  background:var(--dark);
  color:#fff;
  padding:44px 0 48px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:34px 34px;opacity:.06;pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:420px;height:420px;
  border-radius:50%;background:var(--grad);filter:blur(30px);opacity:.28;pointer-events:none;
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:#B9B3D6;margin-bottom:18px;}
.breadcrumb a{color:var(--aqua);}
.breadcrumb a:hover{color:#5EEAD4;}
.breadcrumb .sep{color:rgba(255,255,255,.32);}
.breadcrumb .current{color:#D8D3F0;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{
  font-size:clamp(26px,3.4vw,42px);
  line-height:1.28;font-weight:800;letter-spacing:.5px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px;font-size:14px;color:#B9B3D6;}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--gold);}
.tag-aqua{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  font-size:12px;font-weight:600;color:#5EEAD4;border:1px solid rgba(14,165,164,.6);
  background:rgba(14,165,164,.12);
}

/* ============ 主体布局 ============ */
.article-main{padding:56px 0 var(--pad-section);}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start;}
.article-panel{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:40px;
  min-width:0;
}
.article-body{max-width:760px;font-size:16px;line-height:1.8;color:var(--text);word-break:break-word;}
.article-body h2{
  font-size:clamp(22px,2.2vw,28px);line-height:1.35;font-weight:700;
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--brand);
  letter-spacing:.5px;
}
.article-body h3{font-size:20px;font-weight:600;line-height:1.45;margin:28px 0 12px;color:var(--brand);}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;}
.article-body p{margin:0 0 20px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px;}
.article-body ul li{list-style:disc;margin-bottom:8px;}
.article-body ol li{list-style:decimal;margin-bottom:8px;}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;background:var(--bg-alt);
  border-left:4px solid var(--aqua);border-radius:12px;color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;border:1px solid var(--border);height:auto;margin:24px auto;background:var(--bg-alt);}
.article-body a{color:var(--aqua);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand);}
.article-body code{
  font-family:ui-monospace,Menlo,Consolas,"Courier New",monospace;
  font-size:14px;background:var(--bg-alt);border-radius:6px;padding:2px 6px;color:var(--brand);
}
.article-body pre{
  background:#F7F5FC;border:1px solid var(--border);border-radius:12px;
  padding:16px 18px;overflow-x:auto;margin:0 0 20px;
}
.article-body pre code{background:none;padding:0;color:var(--text);}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left;}
.article-body th{background:var(--bg-alt);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--border);margin:32px 0;}
.article-body strong{font-weight:700;color:var(--brand);}

.empty-state{
  text-align:center;padding:72px 20px;
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:50%;margin:0 auto 18px;
  background:var(--grad);opacity:.9;position:relative;
}
.empty-state .empty-icon::after{
  content:"";position:absolute;inset:14px;border-radius:50%;
  border:2px dashed rgba(255,255,255,.8);
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:24px;}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:96px;display:grid;gap:20px;}
.side-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--shadow);padding:22px;
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--brand);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);
}
.toc-list{display:grid;gap:2px;max-height:320px;overflow:auto;}
.toc-list a{
  display:block;font-size:14px;color:var(--muted);line-height:1.6;
  padding:7px 10px;border-radius:8px;border-left:2px solid transparent;
}
.toc-list a:hover{background:var(--bg-alt);color:var(--brand);border-left-color:var(--aqua);}
.toc-empty{font-size:14px;color:var(--weak);}
.dl-card{
  background:linear-gradient(160deg,#F7F3FF,#EFFBFB);
  border:1px solid var(--border);border-radius:var(--r-md);padding:22px;
  box-shadow:var(--shadow);
}
.dl-card .dl-title{font-size:16px;font-weight:700;margin-bottom:6px;}
.dl-card .dl-desc{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:16px;}
.dl-card .btn{width:100%;}
.dl-card .btn + .btn{margin-top:10px;}
.dl-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.pill-badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:999px;
  border:1px solid var(--border);background:#fff;
  font-size:12px;font-weight:600;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.pill-badge b{color:var(--brand);}
.rel-list{display:grid;gap:12px;}
.rel-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:10px;border-radius:12px;border:1px solid transparent;
  transition:.22s ease;
}
.rel-item:hover{background:var(--bg-alt);border-color:var(--border);}
.rel-item img{width:56px;height:56px;border-radius:10px;object-fit:cover;flex:0 0 auto;background:var(--bg-alt);}
.rel-item .rel-t{font-size:14px;font-weight:600;line-height:1.5;color:var(--text);}
.rel-item .rel-m{font-size:12px;color:var(--weak);margin-top:4px;font-variant-numeric:tabular-nums;}
.rel-item:hover .rel-t{color:var(--brand);}

/* ============ 推荐三卡 ============ */
.reco-section{padding:0 0 var(--pad-section);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;letter-spacing:.5px;}
.section-head p{font-size:15px;color:var(--muted);margin-top:8px;}
.link-more{font-size:15px;font-weight:600;color:var(--aqua);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.link-more:hover{color:var(--brand);}
.reco-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.reco-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow);overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease;
}
.reco-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.reco-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt);}
.reco-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.reco-card:hover .thumb img{transform:scale(1.04);}
.reco-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.reco-body h3{font-size:17px;font-weight:600;line-height:1.5;}
.reco-card:hover h3{color:var(--brand);}
.reco-body .summary{font-size:14px;color:var(--muted);line-height:1.7;}
.reco-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:6px;}
.reco-date{font-size:13px;color:var(--weak);font-variant-numeric:tabular-nums;}
.tag-line{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--aqua);
  border:1px solid rgba(14,165,164,.5);background:rgba(14,165,164,.08);
}

/* ============ 底部 CTA ============ */
.cta-band{padding:0 0 var(--pad-section);}
.cta-card{
  position:relative;overflow:hidden;
  background:var(--grad);border-radius:var(--r-lg);
  padding:48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:0 20px 48px rgba(76,29,149,.22);
}
.cta-card::before{
  content:"";position:absolute;right:-80px;top:-90px;width:280px;height:280px;
  border-radius:50%;background:rgba(255,255,255,.14);
}
.cta-card .cta-txt{position:relative;z-index:2;max-width:620px;}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;margin-bottom:10px;}
.cta-card p{font-size:15px;color:rgba(255,255,255,.88);line-height:1.75;}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}
.cta-actions .btn-primary{background:#fff;color:var(--brand);}
.cta-actions .btn-primary:hover{background:#fff;color:var(--brand-2);box-shadow:0 14px 30px rgba(0,0,0,.18);}
.cta-actions .btn-on-grad{background:rgba(255,255,255,.16);color:#fff;border:1.5px solid rgba(255,255,255,.6);}
.cta-actions .btn-on-grad:hover{background:rgba(255,255,255,.26);transform:translateY(-2px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#C9C4DF;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo-text{color:#fff;font-size:20px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#A8A2C6;margin-top:16px;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:#A8A2C6;}
.footer-col ul a:hover{color:var(--aqua);}
.footer-col p{font-size:14px;line-height:1.85;color:#A8A2C6;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;font-size:13px;color:#8B85A3;
}
.footer-bottom span{font-variant-numeric:tabular-nums;}

/* ============ 移动端下载条 ============ */
.mobile-dock{
  position:fixed;left:0;right:0;bottom:0;z-index:120;
  height:60px;display:none;align-items:center;gap:12px;
  padding:0 16px;background:rgba(255,255,255,.98);
  border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(76,29,149,.10);
  transform:translateY(110%);transition:transform .3s ease;
}
.mobile-dock.show{transform:translateY(0);}
.mobile-dock .btn{flex:1;}
.dock-badge{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  background:var(--bg-alt);color:var(--brand);font-size:12px;font-weight:600;
  font-variant-numeric:tabular-nums;white-space:nowrap;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:32px;}
  .article-panel{padding:32px;}
}
@media (max-width:1024px){
  :root{--pad-section:64px;}
  .header-inner{height:64px;gap:12px;}
  .header-cta{display:none;}
  .nav-toggle{display:block;margin-left:auto;}
  .nav-channels{
    position:fixed;top:0;right:0;bottom:0;
    width:84vw;max-width:360px;
    margin-left:0;padding:88px 20px 24px;
    background:#fff;border-radius:0;
    box-shadow:-16px 0 40px rgba(20,15,46,.18);
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    transform:translateX(105%);transition:transform .3s ease;
    z-index:150;overflow-y:auto;
  }
  .nav-channels.open{transform:translateX(0);}
  .nav-channels a{
    width:100%;font-size:17px;line-height:56px;padding:0 16px;border-radius:14px;
  }
  .nav-channels a.active{border-radius:14px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .sidebar{position:static;top:auto;}
  .article-panel{padding:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .reco-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .mobile-dock{display:flex;}
  body{padding-bottom:60px;}
}
@media (max-width:768px){
  :root{--pad-section:48px;}
  .container{padding:0 20px;}
  .article-hero{padding:32px 0 36px;}
  .article-panel{padding:22px 18px;border-radius:var(--r-md);}
  .article-body{font-size:16px;line-height:1.8;}
  .article-body h2{margin-top:32px;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .reco-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .btn{height:44px;padding:0 22px;}
}
@media (max-width:520px){
  .logo-text{font-size:17px;}
  .meta-row{font-size:13px;gap:10px;}
  .breadcrumb .current{max-width:200px;}
  .reco-body{padding:16px 18px 18px;}
  .dock-badge{display:none;}
}

/* roulang page: category1 */
:root{
  --purple:#4C1D95;
  --purple-soft:#6D28D9;
  --teal:#0EA5A4;
  --gold:#F5B840;
  --bg:#FAF8FF;
  --dark:#140F2E;
  --card:#FFFFFF;
  --alt:#F3EFFF;
  --text:#1A1433;
  --muted:#5A5470;
  --weak:#8B85A3;
  --border:#E6E1F2;
  --success:#16A34A;
  --warn:#D97706;
  --error:#DC2626;
  --radius-lg:24px;
  --radius-md:20px;
  --radius-sm:12px;
  --shadow:0 8px 24px rgba(76,29,149,.08);
  --shadow-hover:0 16px 40px rgba(76,29,149,.16);
  --grad:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:#fff;
  border-bottom:1px solid var(--border);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(76,29,149,.10)}
.header-inner{display:flex;align-items:center;gap:20px;height:76px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:50%;position:relative;flex-shrink:0;
  background:var(--grad);
}
.logo-mark::after{
  content:"";position:absolute;inset:9px;border-radius:50%;
  border:2px solid rgba(255,255,255,.85);
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.5px;color:var(--text);white-space:nowrap}
.logo-text em{font-style:normal;color:var(--purple-soft)}
.nav-channels{display:flex;align-items:center;gap:2px;margin-left:auto;margin-right:auto}
.nav-channels a{
  display:inline-block;padding:8px 14px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--muted);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-channels a:hover{background:var(--alt);color:var(--purple)}
.nav-channels a.active{background:var(--purple);color:#fff;font-weight:600}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 22px;border-radius:999px;background:var(--purple);
  color:#fff;font-size:14px;font-weight:600;white-space:nowrap;
  transition:background .25s ease,transform .2s ease;
  background-image:linear-gradient(135deg,#4C1D95 0%,#4C1D95 100%);
}
.header-cta:hover{background-image:var(--grad);transform:translateY(-2px)}
.header-cta:active{transform:translateY(1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;position:relative;
  border:1px solid var(--border);background:#fff;flex-shrink:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:20px;height:2px;border-radius:2px;
  background:var(--purple);transform:translateX(-50%);transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateX(-50%) rotate(45deg);top:0}
body.nav-open .nav-toggle span::after{transform:translateX(-50%) rotate(-45deg);top:0}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(20,15,46,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:105;
}
body.nav-open .nav-backdrop{opacity:1;visibility:visible}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease;
}
.btn-primary{background:var(--purple);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--grad);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  border:1.5px solid var(--teal);color:var(--teal);background:transparent;
}
.btn-ghost:hover{background:rgba(14,165,164,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-link{color:var(--purple);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.btn-link .arrow{transition:transform .2s ease}
.btn-link:hover .arrow{transform:translateX(4px)}

/* ---------- page head ---------- */
.page-head{
  position:relative;overflow:hidden;background:var(--alt);
  border-bottom:1px solid var(--border);
  padding:56px 0 64px;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;opacity:.07;
}
.page-head::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,40,217,.18) 0%,rgba(109,40,217,0) 70%);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak);margin-bottom:22px}
.breadcrumb a{color:var(--teal);font-weight:500}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .sep{color:var(--weak)}
.breadcrumb .cur{color:var(--muted)}
.page-head-grid{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;flex-wrap:wrap}
.page-head-main{max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:#fff;border:1px solid rgba(76,29,149,.16);
  font-size:12px;font-weight:600;color:var(--purple);margin-bottom:18px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--gold)}
.page-head h1{
  font-size:clamp(30px,4vw,44px);line-height:1.22;font-weight:800;letter-spacing:.5px;
  color:var(--text);margin-bottom:16px;
}
.page-head h1 span{color:var(--purple)}
.page-head p{font-size:16px;color:var(--muted);max-width:640px}
.page-head-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-alt{background:var(--alt)}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;letter-spacing:.5px;
  margin-bottom:12px;
}
.section-head p{color:var(--muted);font-size:15px}

/* ---------- feature rows ---------- */
.feature-flow{border-top:1px solid var(--border)}
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:56px 0;border-bottom:1px solid var(--border);
}
.feature-row.reverse .feature-media{order:2}
.feature-row.reverse .feature-body{order:1}
.feature-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.feature-media img{width:100%;aspect-ratio:16/11;object-fit:cover;background:var(--alt)}
.feature-media .float-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(255,255,255,.94);border-radius:999px;padding:7px 16px;
  font-size:12px;font-weight:600;color:var(--purple);
  border:1px solid rgba(76,29,149,.14);
  backdrop-filter:blur(4px);
}
.tag{
  display:inline-block;padding:5px 14px;border-radius:999px;font-size:12px;font-weight:600;
  color:var(--teal);border:1px solid rgba(14,165,164,.5);background:rgba(14,165,164,.07);
  margin-bottom:16px;
}
.feature-body h3{font-size:20px;line-height:1.45;font-weight:600;margin-bottom:14px}
.feature-body p{color:var(--muted);font-size:15.5px;margin-bottom:14px}
.mini-list{display:grid;gap:10px;margin:18px 0 22px}
.mini-list li{position:relative;padding-left:24px;font-size:15px;color:var(--muted)}
.mini-list li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:50%;
  background:rgba(14,165,164,.16);border:2px solid var(--teal);
}

/* ---------- stats band ---------- */
.stats-band{background:var(--dark);color:#fff;padding:72px 0;position:relative;overflow:hidden}
.stats-band::before{
  content:"";position:absolute;left:-160px;bottom:-180px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,165,164,.22) 0%,rgba(14,165,164,0) 70%);
}
.stats-band .container{position:relative;z-index:2}
.stats-band h2{font-size:clamp(24px,2.6vw,30px);font-weight:700;letter-spacing:.5px;margin-bottom:12px}
.stats-band .lead{color:rgba(255,255,255,.72);font-size:15px;max-width:640px;margin-bottom:40px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{
  border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-md);
  padding:26px 22px;background:rgba(255,255,255,.03);
}
.stat-num{
  font-size:32px;font-weight:800;color:var(--gold);line-height:1.2;
  font-variant-numeric:tabular-nums;margin-bottom:6px;
}
.stat-label{font-size:14px;font-weight:600;color:#fff;margin-bottom:6px}
.stat-note{font-size:13px;color:rgba(255,255,255,.62);line-height:1.6}

/* ---------- scenario cards ---------- */
.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scenario-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scenario-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(76,29,149,.22)}
.scenario-icon{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--alt);margin-bottom:18px;
}
.scenario-icon svg{width:24px;height:24px;stroke:var(--purple);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.scenario-card h3{font-size:20px;font-weight:600;margin-bottom:10px;line-height:1.45}
.scenario-card p{font-size:15px;color:var(--muted)}
.scenario-card .meta{
  display:inline-block;margin-top:18px;font-size:12px;font-weight:600;color:var(--purple);
  border:1px dashed rgba(76,29,149,.3);border-radius:999px;padding:5px 14px;
}

/* ---------- quick links ---------- */
.quick-links{margin-top:8px;border-top:1px solid var(--border)}
.quick-link{
  display:flex;align-items:center;gap:20px;
  padding:24px 8px;border-bottom:1px solid var(--border);
  transition:background .2s ease,padding-left .2s ease;
}
.quick-link:hover{background:#fff;padding-left:16px}
.quick-link .idx{
  font-size:13px;font-weight:700;color:var(--teal);font-variant-numeric:tabular-nums;
  min-width:38px;
}
.quick-link .ql-title{font-size:17px;font-weight:600}
.quick-link .ql-desc{font-size:14px;color:var(--weak);margin-top:2px}
.quick-link .ql-arrow{
  margin-left:auto;color:var(--purple);font-size:18px;transition:transform .2s ease;
}
.quick-link:hover .ql-arrow{transform:translateX(6px)}

/* ---------- faq ---------- */
.faq-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:12px 32px;
}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;font-size:17px;font-weight:600;cursor:pointer;list-style:none;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--purple)}
.faq-item summary::after{
  content:"＋";flex-shrink:0;width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--alt);color:var(--purple);font-size:16px;font-weight:600;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item[open] summary{color:var(--purple)}
.faq-item[open] summary::after{content:"－";background:var(--purple);color:#fff;transform:rotate(180deg)}
.faq-item .faq-answer{padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--muted);max-width:900px}

/* ---------- cta ---------- */
.cta-wrap{padding:0 0 88px}
.cta-card{
  background:var(--grad);border-radius:var(--radius-lg);padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  color:#fff;box-shadow:0 20px 48px rgba(76,29,149,.22);
}
.cta-card h2{font-size:clamp(24px,2.6vw,30px);font-weight:700;letter-spacing:.5px;margin-bottom:10px}
.cta-card p{font-size:15px;color:rgba(255,255,255,.86);max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-card .btn-light{background:#fff;color:var(--purple)}
.cta-card .btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(20,15,46,.28)}
.cta-card .btn-outline{border:1.5px solid rgba(255,255,255,.7);color:#fff}
.cta-card .btn-outline:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .logo-text{color:#fff;font-size:18px;font-weight:800;display:inline-block;margin-bottom:14px}
.footer-brand p{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 ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s ease}
.footer-col a:hover{color:var(--teal)}
.footer-col p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6)}
.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);
}

/* ---------- mobile download bar ---------- */
.mobile-download-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:120;display:none;
  align-items:center;gap:12px;height:60px;padding:0 16px;
  background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(76,29,149,.10);
  transform:translateY(100%);opacity:0;transition:transform .3s ease,opacity .3s ease;
}
.mobile-download-bar.is-visible{transform:translateY(0);opacity:1}
.mobile-download-bar .btn{flex:1;height:44px;padding:0 18px;font-size:15px}
.mobile-download-bar .ver-badge{
  font-size:12px;font-weight:600;color:var(--purple);background:var(--alt);
  border-radius:999px;padding:8px 14px;white-space:nowrap;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .header-inner{gap:14px}
  .nav-channels a{padding:8px 11px;font-size:13.5px}
}
@media (max-width:1024px){
  .nav-toggle{display:block;margin-left:auto}
  .header-cta{display:none}
  .nav-channels{
    position:fixed;top:0;right:0;left:auto;height:100vh;width:84vw;max-width:360px;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:96px 24px 32px;margin:0;z-index:110;
    transform:translateX(100%);transition:transform .3s ease;
    box-shadow:-16px 0 40px rgba(20,15,46,.16);overflow-y:auto;
  }
  body.nav-open .nav-channels{transform:translateX(0)}
  .nav-channels a{
    font-size:17px;line-height:56px;padding:0 16px;border-radius:14px;color:var(--text);
    border-bottom:1px solid var(--border);
  }
  .nav-channels a.active{background:var(--purple);color:#fff;border-bottom-color:transparent}
  .section{padding:64px 0}
  .feature-row{grid-template-columns:1fr;gap:32px;padding:44px 0}
  .feature-row.reverse .feature-media{order:0}
  .feature-row.reverse .feature-body{order:0}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .mobile-download-bar{display:flex}
  .site-footer{padding-bottom:96px}
}
@media (max-width:768px){
  .page-head{padding:40px 0 48px}
  .section{padding:48px 0}
  .section-head{margin-bottom:24px}
  .scenario-grid{grid-template-columns:1fr}
  .cta-card{padding:32px}
  .faq-card{padding:8px 20px}
  .faq-item summary{font-size:16px;padding:20px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .quick-link{gap:12px;flex-wrap:wrap}
  .quick-link .ql-arrow{margin-left:auto}
  .stat-grid{grid-template-columns:1fr 1fr;gap:14px}
  .stat-item{padding:20px 16px}
  .stat-num{font-size:26px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .header-inner{height:66px}
  .logo-text{font-size:16px}
  .logo-mark{width:30px;height:30px}
  .page-head-actions{width:100%}
  .page-head-actions .btn{width:100%}
  .btn{height:44px;padding:0 22px;font-size:15px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .feature-body h3{font-size:18px}
  .stats-band{padding:48px 0}
  .stat-grid{grid-template-columns:1fr}
  .eyebrow{font-size:11px}
  .mobile-download-bar .ver-badge{display:none}
}

/* roulang page: category3 */
:root{
  --purple:#4C1D95;
  --purple-deep:#3B1580;
  --cyan:#0EA5A4;
  --gold:#F5B840;
  --grad:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);
  --bg:#FAF8FF;
  --bg-alt:#F3EFFF;
  --dark:#140F2E;
  --card:#FFFFFF;
  --text:#1A1433;
  --text-sub:#5A5470;
  --text-weak:#8B85A3;
  --line:#E6E1F2;
  --success:#16A34A;
  --warn:#D97706;
  --error:#DC2626;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --shadow:0 8px 24px rgba(76,29,149,.08);
  --shadow-hover:0 16px 40px rgba(76,29,149,.16);
  --sp-section:88px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--purple);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--cyan);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
ul,ol{padding-left:22px;margin:0 0 20px;}
li{margin-bottom:8px;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:.5px;font-weight:700;}
p{margin:0 0 20px;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(76,29,149,.10);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:var(--grad);
  position:relative;flex-shrink:0;
}
.logo-mark::after{
  content:"";position:absolute;inset:0;
  border-radius:9px;
  background:
    radial-gradient(circle at 68% 30%, #fff 0 1.6px, transparent 2px),
    radial-gradient(circle at 34% 68%, #fff 0 1.2px, transparent 1.8px),
    radial-gradient(circle at 52% 46%, rgba(255,255,255,.9) 0 1px, transparent 1.6px);
}
.logo-text{font-size:19px;font-weight:800;color:var(--text);letter-spacing:.5px;letter-spacing:1px;}
.logo-text em{font-style:normal;color:var(--purple);}
.nav-channels{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-channels a{
  display:inline-block;
  padding:9px 15px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  color:var(--text-sub);
  white-space:nowrap;
  transition:background .22s ease,color .22s ease;
}
.nav-channels a:hover{color:var(--purple);background:var(--bg-alt);}
.nav-channels a.active{background:var(--purple);color:#fff;font-weight:600;}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:999px;
  background:var(--purple);color:#fff;font-size:15px;font-weight:600;
  white-space:nowrap;flex-shrink:0;
  transition:background .25s ease,transform .2s ease,box-shadow .25s ease;
}
.header-cta:hover{background:linear-gradient(135deg,#6D28D9,#0EA5A4);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow);}
.header-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  position:relative;flex-shrink:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--text);transform:translateX(-50%);content:"";transition:.25s 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);}

.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;
  background:#fff;z-index:200;
  transform:translateX(104%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
  box-shadow:-12px 0 40px rgba(20,15,46,.18);
  display:flex;flex-direction:column;
  padding:22px 22px 28px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  font-size:20px;line-height:1;color:var(--text-sub);background:#fff;
}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{
  font-size:17px;line-height:56px;color:var(--text-sub);
  border-bottom:1px solid var(--line);
}
.drawer nav a.active{color:var(--purple);font-weight:700;}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,15,46,.45);z-index:150;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:16px;font-weight:600;letter-spacing:.3px;
  transition:transform .22s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn-primary{background:var(--purple);color:#fff;}
.btn-primary:hover{background:linear-gradient(135deg,#6D28D9,#0EA5A4);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow);}
.btn-ghost{background:#fff;color:var(--cyan);border:1.5px solid var(--cyan);}
.btn-ghost:hover{background:var(--cyan);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(14,165,164,.24);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:44px;padding:0 22px;font-size:15px;}

/* ---------- Page hero (light) ---------- */
.page-hero{
  background:linear-gradient(180deg,#F6F2FF 0%,#FAF8FF 100%);
  padding:52px 0 44px;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;top:-90px;right:-40px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(14,165,164,.14),transparent 68%);
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-weak);margin-bottom:16px;flex-wrap:wrap;}
.breadcrumb a{color:var(--cyan);font-weight:500;}
.breadcrumb a:hover{color:var(--purple);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--text-sub);}
.page-hero h1{
  font-size:clamp(28px,3.6vw,42px);
  font-weight:800;line-height:1.24;
  color:var(--text);
  max-width:760px;
  margin-bottom:16px;
}
.page-hero h1 span{color:var(--purple);}
.page-hero .lede{
  max-width:700px;font-size:16.5px;color:var(--text-sub);margin:0;
}
.page-hero-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- Sections ---------- */
.section{padding:var(--sp-section) 0;}
.section.alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;color:var(--text);margin-bottom:12px;
}
.section-head h2 .accent{color:var(--purple);}
.section-head p{color:var(--text-sub);margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:1.4px;
  color:var(--cyan);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--cyan);}

/* ---------- Split layout (8 / 4) ---------- */
.split-layout{
  display:grid;
  grid-template-columns:minmax(0,1.95fr) minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.content-col{min-width:0;}
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:36px;
}
.content-block + .content-block{margin-top:40px;padding-top:40px;border-top:1px solid var(--line);}
.content-block h2{
  font-size:clamp(22px,2.3vw,28px);
  color:var(--text);margin-bottom:16px;position:relative;padding-left:16px;
}
.content-block h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:var(--purple);
}
.content-block h3{font-size:20px;font-weight:600;color:var(--text);margin:26px 0 10px;}
.content-block p{color:var(--text-sub);}
.content-block strong{color:var(--text);font-weight:600;}
.note-bar{
  border-left:4px solid var(--cyan);
  background:linear-gradient(90deg,rgba(14,165,164,.10),rgba(14,165,164,.02));
  border-radius:0 12px 12px 0;
  padding:18px 22px;
  margin:24px 0;
  font-size:15.5px;color:var(--text-sub);line-height:1.8;
}
.note-bar b{color:var(--purple);}
.check-list{list-style:none;padding:0;margin:20px 0;}
.check-list li{
  position:relative;padding-left:30px;margin-bottom:14px;color:var(--text-sub);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:50%;
  background:rgba(14,165,164,.14);
  box-shadow:inset 0 0 0 1.5px var(--cyan);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:13px;width:6px;height:3px;
  border-left:1.6px solid var(--cyan);border-bottom:1.6px solid var(--cyan);
  transform:rotate(-45deg);
}
.inline-figure{
  margin:26px 0;border-radius:16px;overflow:hidden;border:1px solid var(--line);
}
.inline-figure img{width:100%;height:auto;object-fit:cover;aspect-ratio:16/9;background:var(--bg-alt);}
.inline-figure figcaption{
  font-size:13.5px;color:var(--text-weak);padding:12px 16px;background:#fff;
  border-top:1px solid var(--line);
}

/* ---------- Sticky side card ---------- */
.side-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow);
  padding:26px 24px;
}
.side-card h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:6px;}
.side-card .sub{font-size:13.5px;color:var(--text-weak);margin:0 0 16px;}
.side-card ul{list-style:none;padding:0;margin:0 0 20px;}
.side-card ul li{
  font-size:14.5px;color:var(--text-sub);padding-left:20px;position:relative;margin-bottom:10px;
}
.side-card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--gold);
}
.side-actions{display:flex;flex-direction:column;gap:10px;}
.side-actions .btn{width:100%;height:46px;font-size:15px;padding:0 16px;}
.side-card.dark{
  background:var(--dark);border-color:rgba(255,255,255,.10);color:#fff;
}
.side-card.dark h3{color:#fff;}
.side-card.dark p{color:rgba(255,255,255,.72);font-size:14px;}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.metric-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.20);
  font-size:12px;font-weight:600;color:rgba(255,255,255,.80);
  font-variant-numeric:tabular-nums;
}
.metric-badge b{color:var(--gold);font-weight:700;}

/* ---------- Steps ---------- */
.steps-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
  counter-reset:step;
}
.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow);padding:26px 22px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(76,29,149,.22);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  background:rgba(76,29,149,.10);color:var(--purple);
  font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step-card p{font-size:14.5px;color:var(--text-sub);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:12px 32px 20px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--text);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--purple);}
.faq-icon{
  position:relative;flex-shrink:0;width:28px;height:28px;border-radius:50%;
  border:1.5px solid var(--cyan);
  transition:transform .28s ease,background .28s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--cyan);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:1.8px;}
.faq-icon::after{width:1.8px;height:12px;transition:opacity .28s ease;}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:rgba(14,165,164,.10);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-answer{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--text-sub);max-width:820px;}
.faq-answer a{color:var(--cyan);font-weight:600;}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 var(--sp-section);}
.cta-card{
  background:var(--grad);
  border-radius:var(--r-lg);
  padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
  position:relative;overflow:hidden;
  box-shadow:0 24px 60px rgba(76,29,149,.22);
}
.cta-card::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%);
  pointer-events:none;
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);color:#fff;margin-bottom:10px;}
.cta-card p{color:rgba(255,255,255,.86);font-size:15.5px;margin:0;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}
.cta-card .btn-primary{background:#fff;color:var(--purple);}
.cta-card .btn-primary:hover{background:#fff;color:var(--purple);}
.cta-card .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.72);}
.cta-card .btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .logo-text{color:#fff;font-size:19px;display:inline-block;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.60);margin:0;}
.footer-col h4{
  font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.6px;
}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s ease;}
.footer-col a:hover{color:var(--cyan);}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.60);margin:0;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13.5px;color:rgba(255,255,255,.45);
}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .header-inner{gap:14px;}
  .nav-channels a{padding:8px 12px;font-size:14.5px;}
  .header-cta{padding:0 20px;font-size:14.5px;}
}
@media (max-width:1024px){
  :root{--sp-section:64px;}
  .nav-channels,.header-cta{display:none;}
  .nav-toggle{display:block;}
  .split-layout{grid-template-columns:1fr;}
  .side-col{position:static;}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-hero-inner{align-items:flex-start;}
  .cta-card{padding:38px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  :root{--sp-section:48px;}
  .container{padding:0 20px;}
  .header-inner{height:64px;}
  .page-hero{padding:36px 0 32px;}
  .panel{padding:24px 20px;}
  .content-block + .content-block{margin-top:32px;padding-top:32px;}
  .steps-grid{grid-template-columns:1fr;}
  .faq-wrap{padding:8px 20px 12px;}
  .faq-item summary{font-size:16px;padding:18px 0;}
  .cta-card{padding:32px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .page-hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .side-actions .btn{height:44px;}
}
@media (max-width:480px){
  .badge-row{gap:6px;}
  .metric-badge{padding:5px 10px;font-size:11.5px;}
  .page-hero h1{font-size:26px;}
  .logo-text{font-size:17px;}
}

/* roulang page: category2 */
:root{
  --purple:#4C1D95;
  --purple-soft:#EDE6FB;
  --cyan:#0EA5A4;
  --gold:#F5B840;
  --grad:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);
  --bg:#FAF8FF;
  --dark:#140F2E;
  --card:#FFFFFF;
  --alt:#F3EFFF;
  --text:#1A1433;
  --text-2:#5A5470;
  --text-3:#8B85A3;
  --line:#E6E1F2;
  --ok:#16A34A;
  --warn:#D97706;
  --err:#DC2626;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --shadow:0 8px 24px rgba(76,29,149,.08);
  --shadow-hover:0 16px 40px rgba(76,29,149,.16);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:6px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:999px;
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.3px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--purple);
  color:#fff;
  box-shadow:0 8px 20px rgba(76,29,149,.22);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);
  transform:translateY(-2px);
  box-shadow:0 14px 30px rgba(76,29,149,.28);
}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{
  border-color:var(--cyan);
  color:var(--cyan);
  background:transparent;
}
.btn-outline:hover{
  background:rgba(14,165,164,.08);
  transform:translateY(-2px);
}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{
  color:var(--purple);
  padding:0 8px;
  height:auto;
  font-weight:600;
}
.btn-ghost:hover{color:var(--cyan);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

/* ============ 头图/徽章/标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(76,29,149,.22);
  background:rgba(255,255,255,.72);
  font-size:12px;
  font-weight:600;
  color:var(--text-2);
}
.badge b{color:var(--gold);font-size:14px;font-variant-numeric:tabular-nums;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 12px;
  border-radius:999px;
  border:1px solid rgba(14,165,164,.45);
  color:var(--cyan);
  font-size:12px;
  font-weight:600;
  background:rgba(14,165,164,.06);
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(76,29,149,.10);}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:74px;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:32px;height:32px;border-radius:50%;
  background:var(--grad);
  position:relative;
  flex:0 0 auto;
  box-shadow:0 4px 12px rgba(76,29,149,.25);
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:7px;
  border-radius:50%;
  border:1.5px solid rgba(255,255,255,.8);
  border-right-color:transparent;
  transform:rotate(-30deg);
}
.logo-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:.5px;
  color:var(--text);
  line-height:1.2;
}
.logo-text em{
  font-style:normal;
  color:var(--purple);
}
.nav-channels{
  display:flex;
  align-items:center;
  gap:2px;
  margin:0 auto;
}
.nav-channels a{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--text-2);
  transition:background .2s ease,color .2s ease;
}
.nav-channels a:hover{background:var(--alt);color:var(--purple);}
.nav-channels a.active{background:var(--purple);color:#fff;font-weight:600;}
.nav-channels .nav-extra{display:none;}
.header-cta{
  display:inline-flex;
  align-items:center;
  height:42px;
  padding:0 22px;
  border-radius:999px;
  background:var(--purple);
  color:#fff;
  font-size:14px;
  font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
  flex:0 0 auto;
}
.header-cta:hover{
  background:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);
  transform:translateY(-2px);
  box-shadow:0 10px 22px rgba(76,29,149,.24);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  position:relative;
  align-items:center;
  justify-content:center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--purple);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span::before{position:absolute;transform:translateY(-6px);}
.nav-toggle span::after{position:absolute;transform:translateY(6px);}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:rotate(45deg);}
.nav-toggle.is-open span::after{transform:rotate(-45deg);}

/* ============ 页首标题区 ============ */
.page-hero{
  position:relative;
  padding:36px 0 64px;
  background:linear-gradient(180deg,#F3EFFF 0%,#FAF8FF 100%);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle,rgba(76,29,149,.10) 1px,transparent 1px);
  background-size:28px 28px;
  opacity:.5;
  pointer-events:none;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
  position:relative;
  z-index:1;
}
.breadcrumb a{color:var(--cyan);font-weight:600;}
.breadcrumb a:hover{text-decoration:underline;}
.hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:40px;
  align-items:end;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  font-size:12px;
  font-weight:600;
  color:var(--purple);
  letter-spacing:.4px;
  margin-bottom:18px;
}
.eyebrow i{
  width:6px;height:6px;border-radius:50%;
  background:var(--gold);
  display:inline-block;
}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:.5px;
  max-width:760px;
}
.page-hero h1 span{color:var(--purple);}
.page-hero .lead{
  margin-top:18px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  max-width:660px;
}
.hero-side{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--shadow);
}
.hero-side .meta-line{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:6px;
}
.hero-side .meta-line:last-of-type{margin-bottom:18px;}
.hero-side .meta-line b{
  color:var(--text);
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.hero-side .btn{width:100%;margin-bottom:10px;}
.hero-side .btn:last-child{margin-bottom:0;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section.alt{background:var(--alt);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:.5px;
}
.section-head p{
  margin-top:10px;
  font-size:15px;
  color:var(--text-2);
  max-width:640px;
}

/* ============ 时间线 ============ */
.timeline{
  position:relative;
  max-width:900px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:23px;
  top:16px;
  bottom:16px;
  width:2px;
  background:linear-gradient(180deg,rgba(76,29,149,.35),rgba(14,165,164,.35));
}
.step{
  position:relative;
  padding-left:76px;
  padding-bottom:34px;
}
.step:last-child{padding-bottom:0;}
.step-no{
  position:absolute;
  left:0;top:0;
  width:48px;height:48px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--purple);
  color:var(--purple);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  box-shadow:0 6px 16px rgba(76,29,149,.12);
  z-index:1;
}
.step-body{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px 24px;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step-body:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.step-title{
  font-size:18px;
  font-weight:700;
  line-height:1.45;
  margin-bottom:8px;
}
.step-body p{
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
}
.step-body p + p{margin-top:6px;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}

/* ============ 提示条 ============ */
.note-bar{
  display:flex;
  gap:14px;
  align-items:flex-start;
  border-left:4px solid var(--cyan);
  background:rgba(14,165,164,.07);
  border-radius:var(--r-sm);
  padding:16px 20px;
  margin-bottom:32px;
}
.note-bar strong{color:var(--text);font-weight:700;}
.note-bar p{font-size:14.5px;color:var(--text-2);line-height:1.75;}
.note-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--cyan);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
  margin-top:2px;
}

/* ============ 系统要求 ============ */
.req-wrap{
  display:grid;
  grid-template-columns:minmax(0,0.9fr) minmax(0,1.3fr);
  gap:48px;
  align-items:start;
}
.req-left h2{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:.5px;
}
.req-left p{
  margin-top:14px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}
.req-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.req-card{
  background:var(--alt);
  border-radius:var(--r-md);
  padding:26px 24px;
  border:1px solid #E9E2F9;
  transition:transform .25s ease,box-shadow .25s ease;
}
.req-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.req-num{
  font-size:30px;
  font-weight:800;
  line-height:1.2;
  color:var(--purple);
  font-variant-numeric:tabular-nums;
  letter-spacing:.5px;
}
.req-label{
  margin-top:6px;
  font-size:15px;
  font-weight:600;
  color:var(--text);
}
.req-note{
  margin-top:8px;
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.7;
}

/* ============ 图文核对区 ============ */
.check-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:48px;
  align-items:center;
}
.check-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:var(--alt);
  aspect-ratio:4/3;
}
.check-media img{width:100%;height:100%;}
.check-list{margin-top:26px;}
.check-item{
  display:flex;
  gap:16px;
  padding:20px 0;
  border-top:1px solid var(--line);
}
.check-item:first-child{border-top:none;padding-top:0;}
.check-icon{
  flex:0 0 auto;
  width:40px;height:40px;
  border-radius:12px;
  background:rgba(76,29,149,.08);
  color:var(--purple);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;
  font-size:15px;
  font-variant-numeric:tabular-nums;
}
.check-item h3{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  margin-bottom:4px;
}
.check-item p{font-size:14.5px;color:var(--text-2);line-height:1.75;}

/* ============ 排查列表 ============ */
.issue-list{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:8px 28px;
}
.issue-item{
  display:grid;
  grid-template-columns:52px minmax(0,1fr) auto;
  gap:20px;
  align-items:center;
  padding:24px 0;
  border-bottom:1px solid var(--line);
}
.issue-item:last-child{border-bottom:none;}
.issue-index{
  width:44px;height:44px;
  border-radius:50%;
  border:1.5px solid rgba(14,165,164,.5);
  color:var(--cyan);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;
  font-size:14px;
  font-variant-numeric:tabular-nums;
  background:rgba(14,165,164,.06);
}
.issue-item h3{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  margin-bottom:4px;
}
.issue-item p{font-size:14.5px;color:var(--text-2);line-height:1.75;}
.issue-item .tag{flex:0 0 auto;}

/* ============ FAQ ============ */
.faq-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:12px 28px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  background:none;
  border:none;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--purple);}
.faq-sign{
  flex:0 0 auto;
  width:30px;height:30px;
  border-radius:50%;
  border:1.5px solid var(--line);
  color:var(--purple);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  font-weight:600;
  transition:transform .28s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.faq-item.is-open .faq-sign{
  transform:rotate(45deg);
  background:var(--purple);
  border-color:var(--purple);
  color:#fff;
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-item.is-open .faq-a{max-height:340px;}
.faq-a p{
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
  padding:0 46px 22px 0;
}

/* ============ 底部 CTA ============ */
.cta-band{padding:0 0 88px;}
.cta-inner{
  background:var(--grad);
  border-radius:var(--r-lg);
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  color:#fff;
  box-shadow:0 20px 48px rgba(76,29,149,.28);
}
.cta-inner h2{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.3;
  font-weight:800;
  letter-spacing:.5px;
}
.cta-inner p{
  margin-top:10px;
  font-size:15px;
  color:rgba(255,255,255,.86);
  line-height:1.75;
  max-width:520px;
}
.cta-actions{display:flex;flex-direction:column;gap:14px;flex:0 0 auto;}
.cta-actions .btn-primary{
  background:#fff;
  color:var(--purple);
  box-shadow:0 10px 24px rgba(0,0,0,.16);
}
.cta-actions .btn-primary:hover{
  background:#fff;
  color:#3B1580;
  transform:translateY(-2px);
}
.cta-actions .btn-ghost{
  color:rgba(255,255,255,.9);
  text-align:center;
  padding:0;
}
.cta-actions .btn-ghost:hover{color:#fff;text-decoration:underline;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.78);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .logo-text{color:#fff;font-size:20px;}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.5px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.66);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--cyan);}
.footer-col p{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.5);
  flex-wrap:wrap;
}

/* ============ 移动端底部条 ============ */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  height:60px;
  z-index:90;
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(76,29,149,.12);
  align-items:center;
  gap:10px;
  padding:8px 16px;
  opacity:0;
  transform:translateY(100%);
  transition:opacity .3s ease,transform .3s ease;
  pointer-events:none;
}
.mobile-bar.is-show{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-bar .btn-primary{flex:1 1 0;height:44px;font-size:14px;padding:0 16px;}
.mobile-bar .badge{height:44px;padding:0 12px;font-size:11px;background:var(--alt);}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .header-inner{gap:12px;}
  .nav-channels a{padding:0 10px;font-size:14px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-side{max-width:420px;}
  .req-wrap{grid-template-columns:1fr;gap:32px;}
  .check-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:1024px){
  .nav-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .nav-channels{
    position:fixed;
    top:0;right:0;
    width:84vw;
    max-width:360px;
    height:100%;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:88px 20px 28px;
    transform:translateX(100%);
    transition:transform .3s ease;
    box-shadow:-12px 0 40px rgba(26,20,51,.16);
    overflow-y:auto;
    margin:0;
    z-index:120;
  }
  .nav-channels.is-open{transform:translateX(0);}
  .nav-channels a{
    height:56px;
    font-size:17px;
    border-radius:12px;
    padding:0 16px;
    border-bottom:1px solid var(--line);
  }
  .nav-channels a.active{background:var(--purple);color:#fff;border-bottom-color:transparent;}
  .nav-channels .nav-extra{
    display:inline-flex;
    margin-top:20px;
    height:48px;
    justify-content:center;
    background:var(--purple);
    color:#fff;
    border-radius:999px;
    border-bottom:none;
    font-weight:600;
  }
  .nav-channels .nav-extra:hover{background:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);color:#fff;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .page-hero{padding:26px 0 48px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .req-grid{grid-template-columns:1fr;}
  .issue-item{grid-template-columns:44px minmax(0,1fr);gap:14px;}
  .issue-item .tag{grid-column:2;justify-self:start;}
  .issue-list{padding:4px 20px;}
  .faq-card{padding:8px 20px;}
  .faq-a p{padding-right:0;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary{width:100%;}
  .mobile-bar{display:flex;}
  body{padding-bottom:60px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  .btn{height:44px;padding:0 22px;font-size:15px;}
  .page-hero h1{font-size:26px;}
  .step{padding-left:60px;}
  .step-no{width:40px;height:40px;font-size:15px;}
  .timeline::before{left:19px;}
  .step-body{padding:18px 18px;}
  .faq-q{font-size:16px;padding:18px 0;}
  .cta-inner{padding:28px 22px;}
  .hero-side{padding:18px;}
  .check-media{aspect-ratio:16/10;}
}

/* roulang page: category4 */
:root{
  --purple:#4C1D95;
  --purple-deep:#3B1580;
  --teal:#0EA5A4;
  --gold:#F5B840;
  --grad:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);
  --bg:#FAF8FF;
  --dark:#140F2E;
  --card:#FFFFFF;
  --alt:#F3EFFF;
  --text:#1A1433;
  --text-2:#5A5470;
  --muted:#8B85A3;
  --border:#E6E1F2;
  --success:#16A34A;
  --warn:#D97706;
  --error:#DC2626;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --shadow:0 8px 24px rgba(76,29,149,.08);
  --shadow-hover:0 16px 40px rgba(76,29,149,.16);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
p{margin:0}
h1,h2,h3,h4{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;border:none;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--purple);color:#fff;box-shadow:0 8px 20px rgba(76,29,149,.22)}
.btn-primary:hover{background:var(--grad);transform:translateY(-2px);box-shadow:0 14px 30px rgba(76,29,149,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1.5px solid var(--teal);color:var(--teal)}
.btn-ghost:hover{background:var(--teal);color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--purple)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(20,15,46,.25)}
.btn-outline-light{background:transparent;border:1.5px solid rgba(255,255,255,.72);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}
.btn-sm{height:42px;padding:0 22px;font-size:14px}

/* ============ 徽章 / 标签 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:999px;
  border:1px solid rgba(14,165,164,.45);
  background:rgba(14,165,164,.08);
  color:var(--teal);font-size:12px;font-weight:600;letter-spacing:1px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold)}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid rgba(14,165,164,.5);
  color:var(--teal);font-size:12px;font-weight:600;background:rgba(14,165,164,.06);
}
.tag-gold{border-color:rgba(245,184,64,.6);color:#B57A08;background:rgba(245,184,64,.12)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#fff;border-bottom:1px solid var(--border);
  transition:box-shadow .3s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(76,29,149,.08)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:32px;height:32px;border-radius:50%;background:var(--grad);
  position:relative;flex:none;box-shadow:0 4px 12px rgba(76,29,149,.28);
}
.logo-mark::after{
  content:"";position:absolute;inset:8px;border-radius:50%;
  border:2px solid #fff;border-top-color:transparent;transform:rotate(38deg);
}
.logo-text{font-size:18px;font-weight:800;color:var(--purple);letter-spacing:.5px;line-height:1.2}
.logo-text em{font-style:normal;color:var(--teal)}
.nav-channels{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-channels a{
  padding:8px 14px;border-radius:999px;font-size:15px;color:var(--text-2);
  transition:color .2s ease,background .2s ease;
}
.nav-channels a:hover{color:var(--purple);background:var(--alt)}
.nav-channels a.active{background:var(--purple);color:#fff;font-weight:600}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 22px;border-radius:999px;
  background:var(--purple);color:#fff;font-size:14px;font-weight:600;flex:none;
  transition:background .25s ease,transform .25s ease,box-shadow .25s ease;
}
.header-cta:hover{background:var(--grad);transform:translateY(-2px);box-shadow:0 10px 22px rgba(76,29,149,.26)}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:18px;height:2px;background:var(--purple);border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle span{position:relative}
.nav-toggle span::before{position:absolute;top:-6px;left:0}
.nav-toggle span::after{position:absolute;top:6px;left:0}

/* ============ 抽屉导航 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,15,46,.45);z-index:190;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;z-index:200;
  background:#fff;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .32s ease;
  box-shadow:-16px 0 40px rgba(20,15,46,.18);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;border-bottom:1px solid var(--border);
}
.drawer-close{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--border);
  background:#fff;color:var(--purple);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;padding:12px 0;overflow-y:auto;flex:1}
.drawer-nav a{
  padding:0 24px;height:56px;display:flex;align-items:center;
  font-size:17px;color:var(--text-2);border-left:4px solid transparent;
}
.drawer-nav a.active{color:var(--purple);font-weight:700;background:var(--alt);border-left-color:var(--purple)}
.drawer-cta{display:grid;gap:12px;padding:20px 24px 28px;border-top:1px solid var(--border)}
.drawer-cta .btn{width:100%}

/* ============ 移动端下载条 ============ */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:150;
  height:60px;display:none;align-items:center;gap:12px;
  padding:0 16px;background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(76,29,149,.1);
  opacity:0;visibility:hidden;transform:translateY(100%);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.mobile-bar.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-bar .btn{flex:1;height:44px;padding:0 16px;font-size:14px}
.mobile-bar-version{
  flex:none;padding:6px 14px;border-radius:999px;border:1px solid var(--border);
  font-size:12px;font-weight:600;color:var(--text-2);font-variant-numeric:tabular-nums;
}

/* ============ 页面标题区 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--alt);
  padding:36px 0 64px;
  border-bottom:1px solid var(--border);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle,rgba(76,29,149,.5) 1px,transparent 1px);
  background-size:24px 24px;opacity:.12;
  -webkit-mask-image:radial-gradient(circle at 82% 18%,#000 0%,transparent 62%);
  mask-image:radial-gradient(circle at 82% 18%,#000 0%,transparent 62%);
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:var(--teal)}
.breadcrumb a:hover{text-decoration:underline}
.page-hero-grid{display:grid;grid-template-columns:1fr 320px;gap:48px;align-items:end}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);line-height:1.22;font-weight:800;
  letter-spacing:.5px;margin:14px 0 16px;color:var(--text);
}
.page-hero h1 span{color:var(--purple)}
.page-hero-desc{font-size:16px;color:var(--text-2);max-width:620px}
.hero-side{display:grid;gap:16px;justify-items:start}
.mini-stats{display:flex;flex-wrap:wrap;gap:10px}
.mini-stat{
  display:flex;flex-direction:column;gap:2px;
  padding:10px 16px;border-radius:14px;background:#fff;
  border:1px solid var(--border);box-shadow:var(--shadow);
}
.ms-label{font-size:12px;color:var(--muted);font-weight:600;letter-spacing:.5px}
.ms-value{font-size:15px;font-weight:800;color:var(--purple);font-variant-numeric:tabular-nums}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;
  letter-spacing:.5px;margin-bottom:12px;
}
.section-head p{font-size:15px;color:var(--text-2)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ============ 版本列表 ============ */
.version-list{display:flex;flex-direction:column;gap:16px}
.version-card{
  display:grid;grid-template-columns:212px 1fr;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.version-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.version-card.is-latest{
  border:1.5px solid transparent;
  background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;
}
.version-badge{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  padding:28px 20px;background:var(--alt);border-right:1px solid var(--border);text-align:center;
}
.version-card.is-latest .version-badge{background:rgba(14,165,164,.08)}
.v-label{font-size:12px;font-weight:600;letter-spacing:1.5px;color:var(--muted)}
.v-num{
  font-size:32px;font-weight:800;line-height:1.1;letter-spacing:.5px;
  color:var(--gold);font-variant-numeric:tabular-nums;
}
.v-date{font-size:13px;color:var(--text-2);font-variant-numeric:tabular-nums}
.version-body{padding:26px 30px}
.version-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.version-head h3{font-size:20px;font-weight:600;line-height:1.45}
.version-points{display:grid;gap:8px}
.version-points li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.75;color:var(--text-2);
}
.version-points li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--teal);
}
.version-meta{
  margin-top:16px;padding-top:12px;border-top:1px dashed var(--border);
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
  display:flex;flex-wrap:wrap;gap:6px 18px;
}

/* ============ 升级检查清单 ============ */
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.check-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow)}
.check-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.check-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,15,46,0) 45%,rgba(20,15,46,.55) 100%);
}
.check-media-tip{
  position:absolute;left:24px;bottom:22px;z-index:2;color:#fff;
  font-size:14px;font-weight:600;letter-spacing:.5px;
}
.check-list{display:grid;gap:16px;margin-top:26px}
.check-item{display:flex;gap:14px;padding-bottom:16px;border-bottom:1px solid var(--border)}
.check-item:last-child{border-bottom:none;padding-bottom:0}
.check-icon{
  flex:none;width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;background:rgba(14,165,164,.12);
  color:var(--teal);font-weight:800;font-size:15px;
}
.check-item h3{font-size:17px;font-weight:600;margin-bottom:4px}
.check-item p{font-size:14px;color:var(--text-2);line-height:1.7}

/* ============ 更新节奏 ============ */
.rhythm-list{display:grid;margin-top:8px}
.rhythm-item{
  display:flex;gap:20px;padding:26px 0;border-bottom:1px solid var(--border);
}
.rhythm-item:first-child{border-top:1px solid var(--border)}
.rhythm-icon{
  flex:none;width:52px;height:52px;border-radius:16px;
  background:var(--alt);display:grid;place-items:center;color:var(--purple);
}
.rhythm-icon svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.rhythm-body h3{font-size:18px;font-weight:600;margin-bottom:6px}
.rhythm-body p{font-size:15px;color:var(--text-2);max-width:820px}
.rhythm-body .tag{margin-top:10px}

/* ============ 版本号含义 ============ */
.vnum-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:36px 40px;margin-top:8px;
}
.vnum-sample{
  display:flex;align-items:baseline;gap:6px;flex-wrap:wrap;
  font-size:clamp(30px,4vw,44px);font-weight:800;font-variant-numeric:tabular-nums;
  letter-spacing:1px;margin-bottom:8px;
}
.vnum-sample b:nth-child(3){color:var(--purple)}
.vnum-sample b:nth-child(5){color:var(--teal)}
.vnum-sample b:nth-child(7){color:var(--gold)}
.vnum-sample span{color:var(--muted);font-weight:600}
.vnum-row{display:flex;margin-top:24px;padding-top:26px;border-top:1px solid var(--border)}
.vnum-cell{flex:1;padding:0 28px;border-left:1px solid var(--border)}
.vnum-cell:first-child{border-left:none;padding-left:0}
.vnum-cell:last-child{padding-right:0}
.vnum-cell strong{display:block;font-size:15px;font-weight:700;color:var(--purple);margin-bottom:6px}
.vnum-cell p{font-size:14px;line-height:1.75;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;margin-top:8px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--shadow);overflow:hidden;transition:box-shadow .25s ease;
}
.faq-item:hover{box-shadow:var(--shadow-hover)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;cursor:pointer;font-size:17px;font-weight:600;
  color:var(--text);list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:none;width:28px;height:28px;border-radius:50%;
  border:1.5px solid var(--teal);
  background:
    linear-gradient(var(--teal),var(--teal)) center/12px 2px no-repeat,
    linear-gradient(var(--teal),var(--teal)) center/2px 12px no-repeat;
  transition:transform .25s ease,background .25s ease;
}
.faq-item[open] summary{color:var(--purple)}
.faq-item[open] summary::after{
  background:linear-gradient(var(--teal),var(--teal)) center/12px 2px no-repeat;
  transform:rotate(180deg);
}
.faq-body{padding:0 26px 24px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ CTA ============ */
.cta-wrap{padding:0 0 88px}
.cta-card{
  background:var(--grad);border-radius:var(--r-lg);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  color:#fff;box-shadow:0 24px 60px rgba(76,29,149,.28);
  position:relative;overflow:hidden;
}
.cta-card::after{
  content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;
  border-radius:50%;border:1px solid rgba(255,255,255,.22);
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;font-weight:700;margin-bottom:10px;letter-spacing:.5px}
.cta-card p{font-size:15px;color:rgba(255,255,255,.85);max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#fff;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .logo-text{font-size:20px;color:#fff;display:inline-block}
.footer-brand p{
  font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);
  margin-top:16px;max-width:330px;
}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:#fff}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s ease}
.footer-col a:hover{color:var(--teal)}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:56px;padding:24px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-channels,.header-cta{display:none}
  .nav-toggle{display:flex}
  .mobile-bar{display:flex}
  body{padding-bottom:60px}
  .page-hero-grid{grid-template-columns:1fr;gap:28px;align-items:start}
  .hero-side{justify-items:stretch}
  .hero-side .btn{width:100%}
  .check-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section{padding:64px 0}
  .cta-wrap{padding-bottom:64px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .page-hero{padding:28px 0 48px}
  .version-card{grid-template-columns:1fr}
  .version-badge{
    flex-direction:row;align-items:center;justify-content:flex-start;gap:12px;
    border-right:none;border-bottom:1px solid var(--border);
    padding:16px 20px;text-align:left;
  }
  .v-num{font-size:24px}
  .version-body{padding:22px 20px}
  .version-head h3{font-size:18px}
  .vnum-card{padding:26px 22px}
  .vnum-row{flex-direction:column;gap:0}
  .vnum-cell{border-left:none;padding:18px 0;border-top:1px solid var(--border)}
  .vnum-cell:first-child{padding-top:0;border-top:none}
  .vnum-cell:last-child{padding-bottom:0}
  .cta-card{flex-direction:column;align-items:flex-start;padding:32px 24px;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .faq-item summary{font-size:16px;padding:18px 20px}
  .faq-body{padding:0 20px 20px}
  .rhythm-item{gap:14px;padding:22px 0}
  .rhythm-icon{width:44px;height:44px;border-radius:14px}
  .section{padding:48px 0}
  .cta-wrap{padding-bottom:48px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{margin-top:40px}
}
@media (max-width:480px){
  .mini-stats{width:100%}
  .mini-stat{flex:1 1 100%}
  .btn{height:44px;padding:0 22px}
  .header-inner{height:64px}
  .page-hero h1{font-size:26px}
  .version-meta{font-size:12px}
}

/* roulang page: category5 */
:root{
  --violet:#4C1D95;
  --violet-deep:#3B1580;
  --cyan:#0EA5A4;
  --gold:#F5B840;
  --grad:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);
  --bg:#FAF8FF;
  --dark:#140F2E;
  --card:#FFFFFF;
  --alt:#F3EFFF;
  --text:#1A1433;
  --text-2:#5A5470;
  --text-3:#8B85A3;
  --line:#E6E1F2;
  --ok:#16A34A;
  --warn:#D97706;
  --err:#DC2626;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --shadow:0 8px 24px rgba(76,29,149,.08);
  --shadow-hover:0 16px 40px rgba(76,29,149,.16);
  --sec:88px;
  --font:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;letter-spacing:.5px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section.alt{background:var(--alt)}

/* ========== 头部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(76,29,149,.10)}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:34px;height:34px;border-radius:50%;
  background:var(--grad);position:relative;flex:none;
  box-shadow:0 4px 14px rgba(76,29,149,.28);
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;border-radius:50%;
  border:1.5px solid rgba(255,255,255,.8);
  border-left-color:transparent;border-bottom-color:transparent;
  transform:rotate(-30deg);
}
.logo-text{font-size:19px;font-weight:800;color:var(--violet);letter-spacing:.5px;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--cyan)}
.nav-channels{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-channels a{
  display:inline-block;padding:8px 16px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:background .2s ease,color .2s ease;
}
.nav-channels a:hover{background:var(--alt);color:var(--violet)}
.nav-channels a.active{background:var(--violet);color:#FFFFFF;font-weight:600}
.header-cta{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:999px;
  background:var(--violet);color:#FFFFFF;font-size:15px;font-weight:600;
  transition:background .25s ease,transform .2s ease,box-shadow .2s ease;
}
.header-cta:hover{background:linear-gradient(135deg,#7C3AED,#0EA5A4);transform:translateY(-2px);box-shadow:0 10px 24px rgba(76,29,149,.22)}
.header-cta:active{transform:translateY(1px)}
.nav-toggle{
  display:none;width:44px;height:44px;flex:none;margin-left:auto;
  border:1px solid var(--line);border-radius:12px;background:#FFFFFF;
  position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;top:50%;width:18px;height:2px;border-radius:2px;
  background:var(--violet);content:"";transform:translate(-50%,-50%);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span::before{transform:translate(-50%,-7px)}
.nav-toggle span::after{transform:translate(-50%,5px)}
.site-header.nav-open .nav-toggle span{background:transparent}
.site-header.nav-open .nav-toggle span::before{transform:translate(-50%,-50%) rotate(45deg)}
.site-header.nav-open .nav-toggle span::after{transform:translate(-50%,-50%) rotate(-45deg)}

/* ========== 页面标题区 ========== */
.page-banner{
  position:relative;overflow:hidden;
  background:var(--alt);
  border-bottom:1px solid var(--line);
  padding:44px 0 48px;
}
.page-banner::after{
  content:"";position:absolute;right:-80px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,40,217,.14) 0%,rgba(109,40,217,0) 70%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--cyan);font-weight:500}
.breadcrumb a:hover{color:var(--violet)}
.breadcrumb span.sep{color:var(--text-3)}
.banner-row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;position:relative;z-index:1}
.banner-copy h1{
  font-size:clamp(30px,4vw,44px);line-height:1.2;font-weight:800;
  color:var(--text);letter-spacing:.5px;margin-bottom:14px;
}
.banner-copy h1 em{font-style:normal;color:var(--violet)}
.banner-copy p{max-width:640px;font-size:16px;color:var(--text-2)}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;border:1.5px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.4px;
  transition:background .25s ease,color .25s ease,transform .2s ease,box-shadow .2s ease,border-color .25s ease;
}
.btn-primary{background:var(--violet);color:#FFFFFF;box-shadow:0 8px 20px rgba(76,29,149,.20)}
.btn-primary:hover{background:linear-gradient(135deg,#7C3AED,#0EA5A4);transform:translateY(-2px);box-shadow:0 14px 30px rgba(76,29,149,.26)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#FFFFFF;border-color:var(--cyan);color:var(--cyan)}
.btn-outline:hover{background:var(--cyan);color:#FFFFFF;transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{color:var(--violet);font-weight:600;padding:0 4px;height:auto;border:0;background:none}
.btn-ghost:hover{color:var(--cyan)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ========== 深色提示带 ========== */
.strip-wrap{padding-top:64px}
.dark-strip{
  position:relative;overflow:hidden;
  border-radius:var(--r-md);
  background:var(--dark) url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  color:#FFFFFF;
  padding:40px 44px;
  display:flex;align-items:center;gap:28px;
  box-shadow:0 18px 44px rgba(20,15,46,.24);
}
.dark-strip::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,15,46,.95) 0%,rgba(20,15,46,.82) 55%,rgba(20,15,46,.68) 100%);
}
.dark-strip::after{
  content:"";position:absolute;right:-60px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,165,164,.35) 0%,rgba(14,165,164,0) 68%);
  opacity:.75;
}
.dark-strip .strip-icon{
  position:relative;z-index:1;flex:none;
  width:60px;height:60px;border-radius:18px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center;
}
.dark-strip .strip-icon svg{width:28px;height:28px;stroke:var(--cyan);fill:none;stroke-width:1.8}
.dark-strip .strip-copy{position:relative;z-index:1}
.dark-strip h2{font-size:clamp(22px,2.4vw,28px);line-height:1.3;font-weight:700;margin-bottom:8px}
.dark-strip p{color:rgba(255,255,255,.78);font-size:15px;max-width:820px}
.dark-strip .strip-badge{
  position:relative;z-index:1;margin-left:auto;flex:none;
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:999px;
  border:1px solid rgba(255,255,255,.24);
  font-size:13px;font-weight:600;color:var(--gold);white-space:nowrap;
}

/* ========== 安全要点网格 ========== */
.point-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  margin-top:36px;
}
.point-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 26px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D9D1EE}
.point-icon{
  width:48px;height:48px;border-radius:14px;background:var(--alt);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.point-icon svg{width:24px;height:24px;stroke:var(--violet);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.point-card:nth-child(even) .point-icon{background:rgba(14,165,164,.10)}
.point-card:nth-child(even) .point-icon svg{stroke:var(--cyan)}
.point-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.point-card p{font-size:14.5px;color:var(--text-2);line-height:1.7}

/* ========== 权限说明双栏 ========== */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.split-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.split-visual img{width:100%;height:100%;min-height:360px;aspect-ratio:4/5;background:var(--alt)}
.split-visual .visual-tag{
  position:absolute;left:18px;top:18px;
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;
  background:rgba(20,15,46,.86);color:#FFFFFF;
  font-size:12px;font-weight:600;letter-spacing:.4px;
}
.split-visual .visual-caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:56px 22px 20px;
  background:linear-gradient(180deg,rgba(20,15,46,0) 0%,rgba(20,15,46,.88) 100%);
  color:#FFFFFF;
}
.split-visual .visual-caption strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px}
.split-visual .visual-caption span{font-size:13px;color:rgba(255,255,255,.78)}
.section-head{max-width:720px;margin-bottom:32px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(14,165,164,.10);color:var(--cyan);
  font-size:12px;font-weight:600;letter-spacing:.4px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold)}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:16px}
.perm-list{border-top:1px solid var(--line)}
.perm-row{
  display:flex;align-items:flex-start;gap:18px;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.perm-row .perm-dot{
  flex:none;width:10px;height:10px;border-radius:50%;margin-top:9px;
  background:var(--cyan);box-shadow:0 0 0 4px rgba(14,165,164,.14);
}
.perm-row .perm-body{flex:1}
.perm-row h3{font-size:17px;font-weight:600;margin-bottom:6px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.perm-row p{font-size:14.5px;color:var(--text-2)}
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  border:1px solid rgba(14,165,164,.45);color:var(--cyan);
  font-size:12px;font-weight:600;line-height:1.6;
}
.tag.muted{border-color:var(--line);color:var(--text-3)}

/* ========== 自助检查步骤 ========== */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px}
.step-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);padding:26px 22px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.step-card::after{
  content:"";position:absolute;top:46px;right:-16px;width:12px;height:2px;
  background:var(--line);
}
.step-card:last-child::after{display:none}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:50%;
  background:var(--alt);color:var(--violet);
  font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step-card:nth-child(2) .step-no{background:rgba(14,165,164,.12);color:var(--cyan)}
.step-card:nth-child(4) .step-no{background:rgba(245,184,64,.16);color:#9A6A05}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--text-2)}

/* ========== FAQ ========== */
.faq-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:12px 32px 24px;box-shadow:var(--shadow);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--violet)}
.faq-icon{
  flex:none;width:30px;height:30px;border-radius:50%;
  border:1.5px solid var(--line);position:relative;
  transition:transform .3s ease,border-color .25s ease,background .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--violet);
  border-radius:2px;transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:opacity .25s ease}
.faq-item.open .faq-icon{border-color:var(--cyan);background:rgba(14,165,164,.08);transform:rotate(180deg)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-item.open .faq-icon::before{background:var(--cyan)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:860px}

/* ========== 底部 CTA ========== */
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  background:var(--grad);
  color:#FFFFFF;
  padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:0 24px 56px rgba(76,29,149,.28);
}
.cta-card::after{
  content:"";position:absolute;right:-70px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.20) 0%,rgba(255,255,255,0) 70%);
}
.cta-copy{position:relative;z-index:1;max-width:620px}
.cta-copy h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;margin-bottom:12px}
.cta-copy p{color:rgba(255,255,255,.86);font-size:15.5px}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px;flex:none}
.btn-light{background:#FFFFFF;color:var(--violet)}
.btn-light:hover{background:#F3EFFF;transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.18)}
.btn-line{border-color:rgba(255,255,255,.7);color:#FFFFFF;background:transparent}
.btn-line:hover{background:rgba(255,255,255,.14);border-color:#FFFFFF;transform:translateY(-2px)}

/* ========== 页脚 ========== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand .logo-text{font-size:20px;color:#FFFFFF;display:inline-block;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62)}
.footer-col h4{font-size:15px;font-weight:600;color:#FFFFFF;margin-bottom:16px}
.footer-col ul li{margin-bottom:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s ease}
.footer-col a:hover{color:var(--cyan)}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ========== 移动端底部下载条 ========== */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:110;
  display:none;align-items:center;gap:12px;
  height:60px;padding:0 14px;
  background:rgba(20,15,46,.96);
  border-top:1px solid rgba(255,255,255,.12);
  transform:translateY(100%);opacity:0;
  transition:transform .3s ease,opacity .3s ease;
}
.mobile-bar.show{transform:translateY(0);opacity:1}
.mobile-bar .btn{flex:1;height:42px;padding:0 16px;font-size:14px}
.mobile-bar .ver-badge{
  flex:none;font-size:12px;font-weight:600;color:var(--gold);
  border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:6px 12px;
  font-variant-numeric:tabular-nums;white-space:nowrap;
}

/* ========== 响应式 ========== */
@media (max-width:1180px){
  .nav-channels a{padding:8px 11px;font-size:14px}
  .split{gap:36px}
}
@media (max-width:1024px){
  :root{--sec:64px}
  .nav-channels{
    position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
    background:#FFFFFF;flex-direction:column;align-items:stretch;
    gap:0;padding:88px 24px 24px;
    transform:translateX(102%);transition:transform .3s ease;
    box-shadow:-18px 0 48px rgba(20,15,46,.18);
    z-index:105;overflow-y:auto;
  }
  .site-header.nav-open .nav-channels{transform:translateX(0)}
  .nav-channels a{padding:0;line-height:56px;font-size:17px;border-radius:12px;padding-left:14px}
  .nav-channels a + a{margin-top:4px}
  .nav-channels a.active{background:var(--violet);color:#FFFFFF}
  .header-cta{display:none}
  .nav-toggle{display:block}
  .point-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .step-card::after{display:none}
  .split{grid-template-columns:1fr}
  .split-visual img{aspect-ratio:16/10;min-height:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:36px 28px}
  .mobile-bar{display:flex}
  body{padding-bottom:60px}
}
@media (max-width:768px){
  :root{--sec:48px}
  .container{padding:0 20px}
  .banner-row{flex-direction:column;align-items:flex-start;gap:22px}
  .banner-actions .btn{width:100%}
  .dark-strip{flex-direction:column;align-items:flex-start;gap:18px;padding:30px 24px}
  .dark-strip .strip-badge{margin-left:0}
  .point-grid{grid-template-columns:1fr;gap:16px}
  .steps-grid{grid-template-columns:1fr;gap:16px}
  .faq-card{padding:8px 20px 18px}
  .faq-q{font-size:16px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 24px}
  .footer-bottom{flex-direction:column;gap:6px}
  .perm-row{gap:14px}
}
@media (max-width:480px){
  .logo-text{font-size:17px}
  .banner-copy h1{font-size:26px}
  .point-card{padding:22px 20px}
  .dark-strip{padding:26px 20px}
  .faq-icon{width:26px;height:26px}
  .tag{font-size:11px}
}

/* roulang page: category6 */
:root{
  --primary:#4C1D95;
  --primary-deep:#3B1580;
  --accent:#0EA5A4;
  --gold:#F5B840;
  --bg:#FAF8FF;
  --dark:#140F2E;
  --card:#FFFFFF;
  --alt:#F3EFFF;
  --text:#1A1433;
  --muted:#5A5470;
  --weak:#8B85A3;
  --border:#E6E1F2;
  --grad:linear-gradient(135deg,#6D28D9 0%,#0EA5A4 100%);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --shadow:0 8px 24px rgba(76,29,149,.08);
  --shadow-hover:0 16px 40px rgba(76,29,149,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:.5px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
figure{margin:0}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(76,29,149,.10)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  position:relative;width:30px;height:30px;border-radius:50%;
  background:var(--grad);box-shadow:0 4px 12px rgba(76,29,149,.28);
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;border-radius:50%;
  border:1.5px solid rgba(255,255,255,.8);
  border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(-25deg);
}
.logo-text{font-size:19px;font-weight:800;color:var(--primary);letter-spacing:.5px;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--accent)}
.nav-channels{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-channels a{
  padding:8px 13px;border-radius:999px;font-size:15px;color:var(--muted);
  transition:background .2s ease,color .2s ease;white-space:nowrap;
}
.nav-channels a:hover{background:var(--alt);color:var(--primary)}
.nav-channels a.active{background:var(--primary);color:#fff;font-weight:600}
.nav-channels a.active:hover{background:var(--primary-deep);color:#fff}
.header-cta{
  margin-left:auto;display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 22px;border-radius:999px;
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.header-cta:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 10px 22px rgba(14,165,164,.28)}
.header-cta:active{transform:translateY(0)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);
  border-radius:12px;background:#fff;position:relative;flex:0 0 auto;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--primary);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg)}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(20,15,46,.45);
  opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:120;
}
.nav-backdrop.open{opacity:1;pointer-events:auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.3px;
  transition:background .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(76,29,149,.22)}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 14px 30px rgba(14,165,164,.28)}
.btn-outline{border:1.5px solid var(--accent);color:var(--accent);background:#fff}
.btn-outline:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--alt);transform:translateY(-2px)}
.btn-ghost-light{border:1.5px solid rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--primary);padding:0 6px;height:auto}
.btn-ghost:hover{color:var(--accent)}
.btn-ghost::after{content:"→";transition:transform .22s ease}
.btn-ghost:hover::after{transform:translateX(4px)}

/* ---------- page head ---------- */
.page-head{
  position:relative;overflow:hidden;
  padding:34px 0 64px;
  background:
    radial-gradient(circle at 88% 10%, rgba(14,165,164,.12), transparent 42%),
    radial-gradient(circle at 4% 0%, rgba(109,40,217,.10), transparent 40%),
    var(--bg);
  border-bottom:1px solid var(--border);
}
.page-head::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;border:1px solid rgba(76,29,149,.10);
  box-shadow:0 0 0 60px rgba(76,29,149,.035);
  pointer-events:none;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--weak);margin-bottom:26px}
.breadcrumb a{color:var(--accent);font-weight:500}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span[aria-current]{color:var(--muted)}
.page-head-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.35fr .65fr;gap:48px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;
  border:1px solid rgba(14,165,164,.35);
  background:rgba(14,165,164,.08);
  color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.6px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold)}
.page-head h1{
  font-size:clamp(28px,3.6vw,44px);font-weight:800;line-height:1.22;
  margin:18px 0 18px;color:var(--text);
}
.page-head h1 em{font-style:normal;color:var(--primary)}
.page-head-lead{font-size:17px;color:var(--muted);max-width:620px;line-height:1.8}
.page-head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.page-head-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow);
  background:var(--alt);
}
.page-head-media img{width:100%;height:280px;object-fit:cover}
.page-head-media figcaption{
  position:absolute;left:16px;right:16px;bottom:16px;
  padding:10px 14px;border-radius:var(--r-sm);
  background:rgba(20,15,46,.72);color:#fff;font-size:13px;line-height:1.6;
  backdrop-filter:blur(2px);
}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section.alt{background:var(--alt)}
.sec-head{max-width:760px;margin-bottom:32px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{font-size:clamp(23px,2.6vw,31px);font-weight:700;color:var(--text);margin-top:14px}
.sec-head p{margin-top:12px;color:var(--muted);font-size:16px}
.gap-top{margin-top:64px}

/* ---------- search ---------- */
.search-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:36px 36px 30px;
  position:relative;overflow:hidden;
}
.search-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:5px;background:var(--grad);
}
.search-card h2{font-size:22px;font-weight:700}
.search-card .search-desc{margin-top:10px;color:var(--muted);font-size:15px}
.faq-search{display:flex;gap:12px;margin-top:24px}
.faq-search input{
  flex:1 1 auto;height:52px;padding:0 18px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:#fff;color:var(--text);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-search input::placeholder{color:var(--weak)}
.faq-search input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(14,165,164,.14);
}
.faq-search .btn{height:52px;padding:0 30px;flex:0 0 auto}
.hot-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px}
.hot-label{font-size:13px;color:var(--weak)}
.tag{
  padding:6px 14px;border-radius:999px;border:1px solid rgba(14,165,164,.4);
  background:rgba(14,165,164,.07);color:var(--accent);font-size:13px;font-weight:500;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}
.search-empty{
  margin-top:20px;padding:14px 16px;border-radius:var(--r-sm);
  background:rgba(217,119,6,.08);border-left:4px solid #D97706;
  color:#8a4a06;font-size:14px;
}

/* ---------- issue grid ---------- */
.issue-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.issue-row{
  padding:24px 0;border-bottom:1px solid var(--border);
  display:flex;gap:18px;align-items:flex-start;
}
.issue-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;
  background:var(--alt);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.issue-row h3{font-size:17px;font-weight:600;color:var(--text)}
.issue-row p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.75}

/* ---------- faq ---------- */
.faq-card{
  max-width:940px;margin:0 auto;padding:6px 30px;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--shadow);
}
.faq-item + .faq-item{border-top:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-q[aria-expanded="true"]{color:var(--primary)}
.faq-icon{
  position:relative;flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  border:1.5px solid var(--border);background:#fff;
  transition:border-color .25s ease,background .25s ease;
}
.faq-q:hover .faq-icon{border-color:var(--accent)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;border-radius:2px;
  background:var(--primary);transform:translate(-50%,-50%);
  transition:transform .28s ease,background .25s ease;
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-q[aria-expanded="true"] .faq-icon{background:var(--primary);border-color:var(--primary)}
.faq-q[aria-expanded="true"] .faq-icon::before,
.faq-q[aria-expanded="true"] .faq-icon::after{background:#fff}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{
  padding:0 46px 24px 0;color:var(--muted);font-size:15px;line-height:1.85;
}
.faq-a p strong{color:var(--primary);font-weight:600}
.faq-a ul{padding:0 46px 24px 0;color:var(--muted);font-size:15px;line-height:1.85}
.faq-a ul li{position:relative;padding-left:18px;margin-bottom:6px}
.faq-a ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;
  border-radius:50%;background:var(--accent);
}

/* ---------- cta ---------- */
.cta-card{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center;
  padding:48px;border-radius:var(--r-lg);
  background:var(--grad);color:#fff;
  box-shadow:0 20px 50px rgba(76,29,149,.24);
}
.cta-card::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;
  border-radius:50%;border:1px solid rgba(255,255,255,.22);
  box-shadow:0 0 0 48px rgba(255,255,255,.07);
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;position:relative;z-index:1}
.cta-card p{margin-top:14px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.88);max-width:560px;position:relative;z-index:1}
.cta-actions{display:flex;flex-direction:column;gap:12px;position:relative;z-index:1}
.cta-actions .btn{width:100%}
.cta-note{
  margin-top:16px;font-size:13px;color:rgba(255,255,255,.78);
  position:relative;z-index:1;
}

/* ---------- mobile bar ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:110;
  height:60px;padding:0 16px;gap:12px;align-items:center;
  background:rgba(255,255,255,.97);border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(76,29,149,.10);
  opacity:0;pointer-events:none;transform:translateY(100%);
  transition:opacity .3s ease,transform .3s ease;
}
.mobile-bar.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.mobile-bar .btn{height:44px;padding:0 22px;font-size:14px;flex:1 1 auto}
.mobile-bar-version{
  flex:0 0 auto;font-size:12px;color:var(--muted);
  border:1px solid var(--border);border-radius:999px;padding:6px 12px;
  font-variant-numeric:tabular-nums;white-space:nowrap;
}
.mobile-bar-version em{font-style:normal;color:var(--gold);font-weight:700}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#fff;padding:64px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo-text{font-size:20px;color:#fff}
.footer-brand .logo-text em{color:#A78BFA}
.footer-brand p{
  margin-top:14px;max-width:340px;
  color:rgba(255,255,255,.66);font-size:14px;line-height:1.8;
}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:#fff}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.66);font-size:14px;transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-col p{color:rgba(255,255,255,.6);font-size:14px;line-height:1.8}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .header-inner{height:64px;gap:12px}
  .nav-toggle{display:block;margin-left:auto}
  .header-cta{display:none}
  .nav-channels{
    position:fixed;top:0;right:0;bottom:0;left:auto;
    width:84vw;max-width:360px;height:100vh;
    flex-direction:column;align-items:stretch;gap:2px;
    margin:0;padding:84px 18px 28px;
    background:#fff;box-shadow:-16px 0 48px rgba(20,15,46,.18);
    transform:translateX(105%);transition:transform .32s ease;
    z-index:130;overflow-y:auto;
  }
  .nav-channels.open{transform:translateX(0)}
  .nav-channels a{
    display:flex;align-items:center;height:56px;padding:0 16px;
    font-size:17px;border-radius:12px;
  }
  .nav-channels a.active{background:var(--primary);color:#fff}
  .page-head-grid{grid-template-columns:1fr;gap:32px}
  .page-head-media img{height:220px}
  .issue-grid{grid-template-columns:1fr;gap:0}
  .cta-card{grid-template-columns:1fr;padding:36px;gap:26px}
  .cta-actions{flex-direction:row;flex-wrap:wrap}
  .cta-actions .btn{width:auto;flex:1 1 180px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .mobile-bar{display:flex}
  body{padding-bottom:60px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .page-head{padding:24px 0 48px}
  .page-head h1{font-size:26px}
  .page-head-lead{font-size:15.5px}
  .search-card{padding:26px 20px 22px}
  .faq-search{flex-direction:column}
  .faq-search .btn{width:100%}
  .faq-card{padding:4px 18px}
  .faq-q{font-size:16px;padding:20px 0;gap:14px}
  .faq-a p,.faq-a ul{padding-right:0}
  .cta-card{padding:28px 22px}
  .cta-actions{flex-direction:column}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .gap-top{margin-top:44px}
}
@media (max-width:520px){
  .page-head-media img{height:180px}
  .hot-tags{gap:8px}
  .tag{font-size:12px;padding:5px 12px}
  .issue-num{width:32px;height:32px;font-size:13px}
  .btn{height:44px;padding:0 22px;font-size:14.5px}
  .page-head-actions .btn{flex:1 1 100%}
  .mobile-bar-version{font-size:11px;padding:5px 10px}
}