/* roulang page: index */
/* ============ 变量 ============ */
:root{
  --c-ink-1:#17102A;
  --c-ink-2:#241A3D;
  --c-primary:#7A3BF0;
  --c-accent:#FF2E74;
  --c-warm:#FFB23F;
  --c-mint:#23D3A4;
  --c-bg:#F7F4EF;
  --c-surface:#FFFFFF;
  --c-text:#1C1730;
  --c-text-2:#5D5673;
  --c-line:#E6E1DA;
  --radius-lg:16px;
  --radius-sm:10px;
  --r-pill:999px;
  --shadow-soft:0 6px 24px rgba(23,16,42,.08);
  --shadow-soft-lg:0 14px 34px rgba(23,16,42,.14);
  --shadow-glow:0 18px 40px rgba(122,59,240,.28);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px; --sp-10:104px;
  --sec-y:96px;
  /* 断点注释：small<640 medium 640-1023 large 1024-1439 xlarge>=1440 */
}
/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(28px,4.6vw,52px);line-height:1.3;font-weight:800;letter-spacing:-.4px}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700}
h3{font-size:clamp(18px,1.6vw,21px);line-height:1.4;font-weight:700}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{line-height:1.9}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:4px;
}
/* ============ 容器 ============ */
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.wrap-wide{max-width:1320px;margin:0 auto;padding:0 20px}
.section{padding:var(--sec-y) 0}
.section-dark{background:var(--c-ink-1);color:#fff}
.section-soft{background:var(--c-bg)}
.section-white{background:var(--c-surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:var(--sp-7)}
.section-head h2{position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--c-primary)}
.section-sub{color:var(--c-text-2);font-size:15px;margin-top:8px;max-width:640px}
.section-dark .section-sub{color:rgba(255,255,255,.68)}
.link-more{font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap;border-bottom:1px solid transparent;transition:all .2s ease}
.link-more:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}
/* ============ 按钮 / 标签 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:all .22s ease;line-height:1.2;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:#6a2ee0;transform:translateY(-2px);box-shadow:0 22px 46px rgba(122,59,240,.36)}
.btn-primary:active{transform:translateY(0);background:#5f27cf}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,178,63,.72)}
.btn-ghost:hover{background:rgba(255,178,63,.14);border-color:var(--c-warm);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(122,59,240,.35)}
.btn-outline:hover{border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--shadow-soft)}
.btn-sm{padding:9px 18px;font-size:13px}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(122,59,240,.12);color:#5f27cf;font-size:12px;font-weight:600;letter-spacing:.2px;
}
.tag-warm{background:rgba(255,178,63,.16);color:#8d5a00}
.tag-ghost{background:rgba(255,255,255,.12);color:#fff}
.chip{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);color:var(--c-text-2);font-size:12px;font-weight:600;
}
.badge-outline{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,178,63,.6);color:var(--c-warm);font-size:13px;font-weight:600;letter-spacing:.4px;
}
/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--c-ink-1);
  border-bottom:1px solid rgba(255,255,255,.06);transition:all .24s ease;
}
.site-header.is-scrolled{background:rgba(36,26,61,.96);box-shadow:0 10px 30px rgba(10,6,20,.36)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:76px;transition:height .24s ease}
.site-header.is-scrolled .nav-wrap{height:64px}
.nav-group{display:flex;align-items:center;gap:6px;flex:1 1 0}
.nav-group.right{justify-content:flex-end}
.nav-link{
  position:relative;padding:8px 12px;border-radius:var(--r-pill);color:rgba(255,255,255,.78);
  font-size:14.5px;font-weight:500;white-space:nowrap;transition:all .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link.is-active{color:#fff;background:rgba(122,59,240,.26)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:0 12px}
.brand-mark{
  width:32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-accent));color:#fff;font-weight:800;font-size:15px;
  box-shadow:0 8px 20px rgba(122,59,240,.42);
}
.brand-text{color:#fff;font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--c-warm)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative;transition:all .2s ease}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-menu{display:none;background:var(--c-ink-2);border-top:1px solid rgba(255,255,255,.08);padding:8px 20px 20px}
.mobile-menu.is-open{display:block}
.mobile-menu a{display:flex;align-items:center;min-height:48px;color:rgba(255,255,255,.82);font-size:15px;border-bottom:1px solid rgba(255,255,255,.07)}
.mobile-menu a:hover{color:var(--c-warm)}
.mobile-menu .btn{margin-top:14px;width:100%}
/* ============ Hero ============ */
.hero{position:relative;background:var(--c-ink-1);color:#fff;padding:72px 0 88px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:60px 60px;
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,46,116,.22),transparent 68%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.hero-copy{max-width:620px}
.hero h1{margin:20px 0 18px;color:#fff}
.hero h1 em{font-style:normal;color:var(--c-warm)}
.hero-sub{font-size:16.5px;color:rgba(255,255,255,.74);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:26px;margin-top:36px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12)}
.trust-item{display:flex;align-items:center;gap:9px;font-size:13.5px;color:rgba(255,255,255,.7)}
.trust-dot{width:8px;height:8px;border-radius:50%;background:var(--c-mint);box-shadow:0 0 0 4px rgba(35,211,164,.16)}
.vcard{
  position:relative;border-radius:20px;overflow:hidden;aspect-ratio:3/4;background:#2A1F47;
  border:1px solid rgba(255,255,255,.14);box-shadow:var(--shadow-glow);
}
.vcard img{width:100%;height:100%;object-fit:cover}
.vcard::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(23,16,42,.18) 0%,rgba(23,16,42,.06) 42%,rgba(23,16,42,.92) 100%);
}
.vcard-play{
  position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);
  width:62px;height:62px;border-radius:50%;border:2px solid rgba(255,255,255,.85);
  background:rgba(122,59,240,.42);display:flex;align-items:center;justify-content:center;z-index:3;
  transition:all .22s ease;backdrop-filter:blur(2px);
}
.vcard:hover .vcard-play{background:rgba(255,46,116,.6);transform:translate(-50%,-50%) scale(1.06)}
.vcard-play i{display:block;width:0;height:0;border-left:16px solid #fff;border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px}
.vcard-time{
  position:absolute;right:14px;top:14px;z-index:3;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(23,16,42,.62);font-size:12px;font-weight:600;letter-spacing:.4px;font-variant-numeric:tabular-nums;
}
.vcard-cap{position:absolute;left:18px;right:18px;bottom:18px;z-index:3;font-size:15.5px;font-weight:600;line-height:1.5}
/* ============ 数据条 ============ */
.stat-band{background:var(--c-ink-2);color:#fff;border-top:1px solid rgba(255,255,255,.06)}
.stat-cell{padding:26px 22px;border-right:1px solid rgba(255,255,255,.08)}
.stat-num{font-size:30px;font-weight:800;color:var(--c-warm);font-variant-numeric:tabular-nums;letter-spacing:-.5px}
.stat-label{font-size:13.5px;color:rgba(255,255,255,.66);margin-top:4px}
/* ============ 横滑轨道 ============ */
.rail{
  display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:8px 4px 22px;margin:0 -4px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  position:relative;flex:0 0 auto;width:238px;aspect-ratio:3/4;border-radius:18px;overflow:hidden;
  background:#2A1F47;border:1px solid rgba(255,255,255,.1);scroll-snap-align:start;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rail-card img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rail-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(23,16,42,.12) 0%,rgba(23,16,42,.08) 45%,rgba(23,16,42,.9) 100%);
}
.rail-card:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:var(--shadow-glow)}
.rail-card .tag{position:absolute;left:12px;top:12px;z-index:3}
.rail-card .rail-title{position:absolute;left:14px;right:14px;bottom:44px;z-index:3;font-size:14.5px;font-weight:600;line-height:1.5;color:#fff;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rail-card .rail-time{position:absolute;right:14px;bottom:14px;z-index:3;font-size:12px;color:rgba(255,255,255,.78);font-variant-numeric:tabular-nums}
/* ============ 种草清单 ============ */
.pick-list{background:var(--c-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);overflow:hidden}
.pick-row{
  display:flex;align-items:center;gap:22px;padding:24px 26px;border-bottom:1px solid var(--c-line);
  transition:background .2s ease;
}
.pick-row:last-child{border-bottom:0}
.pick-row:hover{background:#FBF9F5}
.pick-num{
  flex:0 0 auto;width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(122,59,240,.12);color:#5f27cf;font-weight:800;font-size:16px;font-variant-numeric:tabular-nums;
  transition:all .2s ease;
}
.pick-row:hover .pick-num{background:var(--c-warm);color:#3a2400}
.pick-main{flex:1 1 auto;min-width:0}
.pick-main h3{font-size:18.5px;margin-bottom:6px}
.pick-main p{font-size:14px;color:var(--c-text-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pick-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.pick-go{
  flex:0 0 auto;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);color:var(--c-primary);font-size:16px;transition:all .2s ease;
}
.pick-row:hover .pick-go{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
/* ============ 资讯列表 ============ */
.news-card{
  display:block;height:100%;background:var(--c-surface);border-radius:var(--radius-lg);
  padding:26px 26px 22px;box-shadow:var(--shadow-soft);border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-soft-lg);border-color:rgba(122,59,240,.28)}
.news-title{
  font-size:19px;font-weight:700;margin:14px 0 10px;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-sum{
  font-size:14.5px;color:var(--c-text-2);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:block;margin-top:16px;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-text-2);font-variant-numeric:tabular-nums}
.news-cell{margin-bottom:24px}
.empty-state{
  background:var(--c-surface);border-radius:var(--radius-lg);padding:48px 28px;text-align:center;
  box-shadow:var(--shadow-soft);border:1px dashed var(--c-line);
}
.empty-icon{
  width:56px;height:56px;border-radius:50%;margin:0 auto 18px;display:flex;align-items:center;justify-content:center;
  background:rgba(122,59,240,.1);color:var(--c-primary);font-size:22px;font-weight:800;
}
.empty-state h3{font-size:19px;margin-bottom:8px}
.empty-state p{color:var(--c-text-2);font-size:14.5px;margin-bottom:20px}
/* ============ 口碑 ============ */
.talk-card{
  flex:0 0 auto;width:300px;background:var(--c-ink-2);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-lg);padding:22px;scroll-snap-align:start;transition:transform .22s ease,border-color .22s ease;
}
.talk-card:hover{transform:translateY(-4px);border-color:rgba(122,59,240,.5)}
.talk-head{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-accent));color:#fff;font-size:15px;font-weight:700;
}
.talk-name{font-size:14px;font-weight:600;color:#fff}
.stars{color:var(--c-warm);font-size:13px;letter-spacing:2px;margin-top:2px}
.talk-text{margin-top:14px;font-size:15px;color:rgba(255,255,255,.78);line-height:1.85}
/* ============ FAQ ============ */
.faq-shell{background:var(--c-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);overflow:hidden}
.faq-shell .accordion{margin:0;background:transparent;border:0}
.faq-shell .accordion-item{border-bottom:1px solid var(--c-line)}
.faq-shell .accordion-item:last-child{border-bottom:0}
.faq-shell .accordion-title{
  padding:22px 56px 22px 24px;font-size:17px;font-weight:600;color:var(--c-text);
  border:0;background:transparent;position:relative;transition:background .2s ease,color .2s ease;
}
.faq-shell .accordion-title:hover{background:#FBF9F5;color:var(--c-primary)}
.faq-shell .accordion-title::before{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--c-primary);line-height:1;
}
.faq-shell .accordion-item.is-active .accordion-title::before{content:"−"}
.faq-shell .accordion-item.is-active .accordion-title{color:var(--c-primary)}
.faq-shell .accordion-content{padding:0 24px 22px;border:0;background:transparent;color:var(--c-text-2);font-size:15.5px;line-height:1.9}
/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(120deg,var(--c-ink-1) 0%,#2E1B57 52%,#3A1A56 100%);
  border-radius:20px;padding:44px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  color:#fff;box-shadow:var(--shadow-glow);
}
.cta-band h2{font-size:clamp(20px,2.2vw,24px);font-weight:700;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.72);font-size:14.5px}
/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink-1);color:rgba(255,255,255,.66);padding:72px 0 0}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.9;max-width:320px;color:rgba(255,255,255,.6)}
.footer-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-list li{margin-bottom:12px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s ease}
.footer-list a:hover{color:var(--c-warm)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.1);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.48);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--c-warm)}
/* ============ 吸底 CTA ============ */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;height:64px;
  background:rgba(23,16,42,.97);border-top:1px solid rgba(255,255,255,.12);
  align-items:center;justify-content:space-between;gap:12px;padding:0 16px calc(0px + env(safe-area-inset-bottom,0px));
}
.sticky-cta .btn{padding:11px 20px;font-size:14px}
.sticky-cta a.text-link{color:rgba(255,255,255,.72);font-size:13.5px}
/* ============ 动效 ============ */
@media (prefers-reduced-motion: no-preference){
  .reveal-up{animation:revealUp .6s ease both}
  @keyframes revealUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
}
/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--sec-y:72px}
  .nav-group{display:none}
  .nav-toggle{display:flex}
  .brand{flex:1 1 auto;justify-content:center;padding:0}
  .nav-wrap{height:64px}
  .site-header.is-scrolled .nav-wrap{height:58px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px}
  .rail-card{width:196px}
}
@media (max-width:767px){
  :root{--sec-y:60px}
  .hero{padding:52px 0 64px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto}
  .trust-row{gap:16px;margin-top:28px;padding-top:22px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px}
  .stat-cell{border-right:0;border-bottom:1px solid rgba(255,255,255,.08)}
  .pick-row{gap:14px;padding:20px 16px}
  .pick-num{width:44px;height:44px;font-size:14px;border-radius:12px}
  .pick-main h3{font-size:17px}
  .pick-main p{white-space:normal}
  .rail-card{width:168px}
  .talk-card{width:250px}
  .faq-shell .accordion-title{padding:18px 48px 18px 18px;font-size:16px}
  .faq-shell .accordion-content{padding:0 18px 18px}
  .cta-band{padding:28px 20px;border-radius:16px}
  .site-footer{padding-top:52px}
  .sticky-cta{display:flex}
  body{padding-bottom:64px}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --c-ink-1:#17102A;
  --c-ink-2:#241A3D;
  --c-primary:#7A3BF0;
  --c-accent:#FF2E74;
  --c-warm:#FFB23F;
  --c-mint:#23D3A4;
  --c-bg:#F7F4EF;
  --c-surface:#FFFFFF;
  --c-text:#1C1730;
  --c-text-2:#5D5673;
  --c-line:#E6E1DA;

  --radius:16px;
  --radius-sm:10px;
  --radius-xs:8px;
  --pill:999px;

  --shadow-card:0 6px 24px rgba(23,16,42,.08);
  --shadow-card-lg:0 18px 40px rgba(23,16,42,.14);
  --shadow-glow:0 18px 40px rgba(122,59,240,.28);
  --shadow-dark:0 12px 32px rgba(10,6,22,.45);

  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px; --sp-10:104px;

  --section-pad:96px;
  --nav-h:76px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;

  /* breakpoints: small <640 | medium 640-1023 | large 1024-1439 | xlarge >=1440 */
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--c-accent);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:6px;
}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(28px,4.6vw,52px);font-weight:800;line-height:1.3;}
h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.3;}
h3{font-size:21px;font-weight:700;line-height:1.35;}
h4{font-size:17px;font-weight:600;line-height:1.45;}
p{margin-bottom:1em;}
p:last-child{margin-bottom:0;}
em{font-style:normal;}
::selection{background:var(--c-primary);color:#fff;}

/* ============ 容器 ============ */
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
.wrap-wide{max-width:1320px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:var(--pill);
  font-size:15px;font-weight:600;line-height:1;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  box-shadow:0 10px 24px rgba(122,59,240,.3);
}
.btn-primary:hover,.btn-primary:active{
  background:#6730d6;color:#fff;transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(122,59,240,.4);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;color:#fff;border-color:rgba(255,178,63,.65);
}
.btn-ghost:hover,.btn-ghost:active{
  color:var(--c-warm);border-color:var(--c-warm);
  transform:translateY(-2px);background:rgba(255,178,63,.08);
}
.btn-outline{
  background:transparent;color:var(--c-primary);border-color:rgba(122,59,240,.4);
}
.btn-outline:hover,.btn-outline:active{
  border-color:var(--c-primary);background:rgba(122,59,240,.08);color:var(--c-primary);
  transform:translateY(-2px);
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;
  border-radius:var(--pill);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  background:rgba(122,59,240,.1);
  color:var(--c-primary);
}
.badge-warm{
  background:transparent;
  border:1px solid rgba(255,178,63,.75);
  color:var(--c-warm);
}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--pill);
  font-size:12.5px;font-weight:600;
  background:rgba(122,59,240,.09);color:var(--c-primary);
  transition:background-color .2s ease,color .2s ease;
}
.tag:hover{background:rgba(255,46,116,.12);color:var(--c-accent);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(23,16,42,.55);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background-color .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:var(--c-ink-2);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 8px 26px rgba(10,6,22,.4);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:var(--nav-h);
  transition:min-height .24s ease;
}
.site-header.is-scrolled .nav-wrap{min-height:60px;}
.nav-group{display:flex;align-items:center;gap:26px;}
.nav-group.left{flex:1 1 auto;justify-content:flex-start;}
.nav-group.right{flex:1 1 auto;justify-content:flex-end;}
.nav-link{
  position:relative;
  color:rgba(255,255,255,.82);
  font-size:15px;font-weight:500;
  padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{transform:scaleX(1);background:var(--c-warm);}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  flex:0 0 auto;
  color:#fff;font-weight:700;font-size:16px;letter-spacing:.02em;
}
.brand:hover{color:#fff;}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;
  border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;color:#fff;
  background:linear-gradient(140deg,var(--c-primary),var(--c-accent));
  box-shadow:0 8px 18px rgba(122,59,240,.4);
}
.brand-text{white-space:nowrap;}
.brand-text em{color:var(--c-warm);}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(255,255,255,.2);
  align-items:center;justify-content:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:#fff;position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;
  transition:transform .2s ease,top .2s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}
.mobile-menu{
  display:none;
  padding:8px 20px 22px;
  background:var(--c-ink-2);
  border-top:1px solid rgba(255,255,255,.08);
}
.mobile-menu.is-open{display:block;}
.mobile-menu a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;
  color:rgba(255,255,255,.85);
  font-size:15.5px;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.mobile-menu a:hover{color:var(--c-warm);}
.mobile-menu .btn{
  margin-top:16px;border-bottom:0;justify-content:center;color:#fff;
}

/* ============ 页面头部（文章标题区） ============ */
.page-head{
  position:relative;
  padding:56px 0 64px;
  background:var(--c-ink-1);
  color:#fff;
  overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 12% 18%, rgba(122,59,240,.35), transparent 46%),
    radial-gradient(circle at 88% 6%, rgba(255,46,116,.22), transparent 42%),
    linear-gradient(transparent 0, rgba(255,255,255,.035) 1px, transparent 1px) 0 0/100% 44px;
  pointer-events:none;
}
.page-head .wrap{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.6);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:var(--c-warm);}
.breadcrumb .sep{opacity:.45;}
.breadcrumb .current{color:var(--c-warm);}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.head-tags .badge{background:rgba(122,59,240,.22);color:#D9C6FF;}
.head-tags .badge-warm{background:transparent;border:1px solid rgba(255,178,63,.7);color:var(--c-warm);}
.page-head h1{
  max-width:960px;
  color:#fff;
  letter-spacing:-.01em;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:22px;
  font-size:13.5px;color:rgba(255,255,255,.62);
}
.article-meta .dot{opacity:.5;}
.article-meta .author{
  display:inline-flex;align-items:center;gap:8px;
  color:rgba(255,255,255,.82);font-weight:600;
}
.article-meta .avatar{
  width:26px;height:26px;border-radius:50%;
  background:linear-gradient(140deg,var(--c-primary),var(--c-accent));
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:#fff;
}

/* ============ 文章主体 ============ */
.article-section{padding:56px 0 88px;background:var(--c-bg);}
.article-shell{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
  padding:56px 56px 48px;
}
.article-body{
  max-width:760px;
  margin:0 auto;
  font-size:16.5px;
  line-height:1.9;
  color:var(--c-text);
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;
  margin:2.4em 0 .8em;
  padding-left:16px;
  font-size:clamp(22px,2.6vw,28px);
  font-weight:700;
  color:var(--c-text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;
  width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-accent));
}
.article-body h3{
  margin:1.8em 0 .6em;
  font-size:20px;font-weight:700;color:var(--c-text);
}
.article-body h4{
  margin:1.5em 0 .5em;font-size:17px;font-weight:600;color:var(--c-text);
}
.article-body p{margin:0 0 1em;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(122,59,240,.3);}
.article-body a:hover{color:var(--c-accent);border-bottom-color:rgba(255,46,116,.4);}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:0;}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:22px;margin-bottom:.55em;line-height:1.85;
}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:7px;height:7px;border-radius:50%;
  background:var(--c-primary);
}
.article-body ol{counter-reset:li;}
.article-body ol li{counter-increment:li;}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-size:12.5px;font-weight:700;color:var(--c-accent);
  letter-spacing:.06em;font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  border-left:4px solid var(--c-warm);
  background:#FCF8F0;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#4A4359;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;height:auto;border-radius:12px;margin:1.6em 0 .6em;
  background:#EDE8E1;
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--c-text-2);
}
.article-body pre{
  margin:1.6em 0;padding:20px 22px;
  background:var(--c-ink-1);color:#E7E2F5;
  border-radius:var(--radius-sm);
  font-size:14px;line-height:1.75;overflow-x:auto;
}
.article-body code{
  font-size:.94em;background:#F1ECF9;color:#5B2FC4;
  padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.table-scroll{
  width:100%;overflow-x:auto;
  margin:1.6em 0;
  border:1px solid var(--c-line);border-radius:var(--radius-sm);
}
.article-body table{
  width:100%;border-collapse:collapse;margin:0;font-size:15px;
  min-width:520px;
}
.article-body thead th{
  background:#F2EEF9;color:var(--c-text);
  font-weight:700;text-align:left;
  padding:12px 16px;border-bottom:1px solid var(--c-line);
}
.article-body tbody td{
  padding:12px 16px;border-bottom:1px solid var(--c-line);
  color:var(--c-text-2);
}
.article-body tbody tr:nth-child(even){background:#FBF9F6;}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body hr{
  border:0;height:1px;background:var(--c-line);margin:2.2em 0;
}

/* 文末标签 */
.article-foot{
  max-width:760px;margin:48px auto 0;padding-top:28px;
  border-top:1px solid var(--c-line);
}
.foot-label{
  font-size:13px;font-weight:600;color:var(--c-text-2);
  letter-spacing:.06em;margin-bottom:14px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}

/* 上下篇 */
.post-nav{
  max-width:760px;margin:32px auto 0;
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.post-nav-item{
  display:block;padding:20px 22px;
  background:#FBF9F6;
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  transition:transform .2s ease,border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.post-nav-item:hover{
  transform:translateY(-2px);
  border-color:rgba(122,59,240,.45);
  background:#fff;
  box-shadow:var(--shadow-card);
}
.post-nav-item .dir{
  display:block;font-size:12.5px;font-weight:600;color:var(--c-primary);
  letter-spacing:.08em;margin-bottom:8px;
}
.post-nav-item .title{
  display:block;font-size:15.5px;font-weight:600;color:var(--c-text);
  line-height:1.6;
}
.post-nav-item .hint{
  display:block;margin-top:8px;font-size:13px;color:var(--c-text-2);
}
.post-nav-item.next{text-align:right;}

/* 空态 */
.empty-state{
  max-width:760px;margin:0 auto;
  padding:56px 32px;text-align:center;
  background:#FBF9F6;
  border:1px dashed var(--c-line);
  border-radius:var(--radius);
}
.empty-state .icon{
  width:56px;height:56px;margin:0 auto 20px;
  border-radius:18px;display:flex;align-items:center;justify-content:center;
  background:rgba(122,59,240,.1);color:var(--c-primary);font-size:22px;
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--c-text-2);font-size:15px;margin-bottom:24px;}

/* ============ 通用板块 ============ */
.section{padding:var(--section-pad) 0;}
.section-tight{padding:72px 0;}
.section-dark{background:var(--c-ink-1);color:#fff;}
.section-dark h2{color:#fff;}
.section-dark .section-desc{color:rgba(255,255,255,.62);}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:48px;
}
.section-head .head-left{max-width:640px;}
.section-title{
  margin-bottom:10px;
}
.section-desc{
  font-size:15px;color:var(--c-text-2);line-height:1.8;max-width:640px;
}
.section-more{
  font-size:14.5px;font-weight:600;color:var(--c-primary);
  display:inline-flex;align-items:center;gap:8px;
}
.section-more:hover{color:var(--c-accent);gap:12px;}

/* ============ 相关推荐竖卡轨道 ============ */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;
  overflow-x:auto;
  padding:4px 4px 18px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.vcard{
  position:relative;
  flex:0 0 240px;
  width:240px;
  aspect-ratio:3/4;
  border-radius:var(--radius);
  overflow:hidden;
  scroll-snap-align:start;
  border:1px solid rgba(255,255,255,.09);
  background:#2C2148;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.vcard:hover{
  transform:translateY(-4px);
  border-color:var(--c-primary);
  box-shadow:var(--shadow-glow);
}
.vcard img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .3s ease;
}
.vcard:hover img{transform:scale(1.04);}
.vcard .veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(23,16,42,.18) 0%,rgba(23,16,42,.05) 38%,rgba(23,16,42,.9) 100%);
}
.vcard .chip{
  position:absolute;top:14px;left:14px;
  padding:5px 12px;border-radius:var(--pill);
  font-size:12px;font-weight:600;
  background:rgba(23,16,42,.62);color:var(--c-warm);
  border:1px solid rgba(255,178,63,.45);
}
.vcard .dur{
  position:absolute;right:14px;bottom:14px;
  padding:4px 10px;border-radius:var(--pill);
  font-size:12px;font-weight:600;
  background:rgba(23,16,42,.7);color:rgba(255,255,255,.85);
  font-variant-numeric:tabular-nums;
}
.vcard .vtext{
  position:absolute;left:16px;right:16px;bottom:44px;
  color:#fff;font-size:15.5px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-fade{
  position:absolute;top:0;bottom:18px;width:56px;pointer-events:none;z-index:2;
}
.rail-fade.left{left:0;background:linear-gradient(90deg,var(--c-ink-1),rgba(23,16,42,0));}
.rail-fade.right{right:0;background:linear-gradient(270deg,var(--c-ink-1),rgba(23,16,42,0));}

/* ============ FAQ ============ */
.faq-block{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
  padding:8px 28px;
}
.faq-block .accordion{
  margin:0;background:transparent;border:0;
}
.faq-block .accordion-item{border-bottom:1px solid var(--c-line);}
.faq-block .accordion-item:last-child{border-bottom:0;}
.faq-block .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;
  font-size:17px;font-weight:600;color:var(--c-text);
  border:0;background:transparent;
  line-height:1.6;
  transition:color .2s ease;
}
.faq-block .accordion-title:hover{color:var(--c-primary);}
.faq-block .accordion-title::before{
  content:"\002B";
  order:2;
  font-size:20px;font-weight:600;color:var(--c-primary);
  transition:transform .2s ease;
}
.faq-block .accordion-title[aria-expanded="true"]{color:var(--c-primary);}
.faq-block .accordion-title[aria-expanded="true"]::before{content:"\2212";}
.faq-block .accordion-content{
  padding:0 0 22px;
  font-size:15.5px;line-height:1.9;color:var(--c-text-2);
  border:0;background:transparent;
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  background:var(--c-ink-1);
  border-radius:var(--radius);
  padding:44px 48px;
  overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:var(--shadow-dark);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 8% 0%, rgba(122,59,240,.42), transparent 45%),
    radial-gradient(circle at 92% 100%, rgba(255,46,116,.28), transparent 48%);
  pointer-events:none;
}
.cta-band .cta-text{position:relative;z-index:2;max-width:640px;}
.cta-band h2{font-size:22px;color:#fff;margin-bottom:8px;}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.68);margin:0;}
.cta-band .cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink-1);
  color:rgba(255,255,255,.66);
  padding:76px 0 0;
  margin-top:0;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;margin-bottom:16px;
  color:#fff;font-weight:700;font-size:16px;
}
.footer-brand .brand-mark{width:32px;height:32px;font-size:16px;}
.footer-brand .brand-text em{color:var(--c-warm);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.55);max-width:280px;}
.footer-title{
  font-size:14px;font-weight:700;color:#fff;
  margin-bottom:18px;letter-spacing:.04em;
}
.footer-list li{margin-bottom:12px;}
.footer-list a{
  font-size:14px;color:rgba(255,255,255,.62);
  transition:color .2s ease;
}
.footer-list a:hover{color:var(--c-warm);}
.footer-bottom{
  margin-top:56px;
  padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--c-warm);}

/* ============ 移动吸底 CTA ============ */
.sticky-cta{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:var(--c-ink-2);
  border-top:1px solid rgba(255,255,255,.1);
  align-items:center;justify-content:space-between;gap:14px;
}
.sticky-cta .txt{font-size:13.5px;color:rgba(255,255,255,.75);}
.sticky-cta .btn{padding:11px 22px;font-size:14px;}
.sticky-cta a.plain{font-size:13.5px;color:rgba(255,255,255,.7);}
.sticky-cta a.plain:hover{color:var(--c-warm);}

/* ============ 动效 ============ */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease;}
.fade-up.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media screen and (max-width:1439px){
  :root{--section-pad:88px;}
}
@media screen and (max-width:1023px){
  .nav-group{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-wrap{justify-content:space-between;}
  .brand{order:2;}
  .nav-toggle{order:3;}
  .article-shell{padding:40px 32px 36px;}
  .cta-band{padding:36px 32px;}
  .section{padding:72px 0;}
}
@media screen and (max-width:767px){
  body{font-size:16px;}
  .wrap{padding:0 18px;}
  :root{--section-pad:60px;}
  .page-head{padding:36px 0 44px;}
  .article-section{padding:36px 0 64px;}
  .article-shell{padding:28px 20px 24px;border-radius:14px;}
  .article-body{font-size:16px;}
  .article-body h2{margin-top:2em;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-item.next{text-align:left;}
  .section-head{margin-bottom:32px;}
  .cta-band{border-radius:14px;padding:28px 22px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1 1 auto;}
  .faq-block{padding:4px 18px;}
  .vcard{flex:0 0 176px;width:176px;}
  .rail-fade{display:none;}
  .footer-desc{max-width:100%;}
  .site-footer{padding-top:56px;}
  .sticky-cta{display:flex;}
  body{padding-bottom:66px;}
}
@media screen and (max-width:519px){
  .brand-text{font-size:14px;}
  .brand-mark{width:28px;height:28px;flex:0 0 28px;font-size:14px;border-radius:9px;}
  .article-meta{font-size:13px;}
  .empty-state{padding:40px 20px;}
}

/* roulang page: category1 */
/* ===================== 设计变量 ===================== */
:root{
  --c-ink-1:#17102A;
  --c-ink-2:#241A3D;
  --c-primary:#7A3BF0;
  --c-accent:#FF2E74;
  --c-warm:#FFB23F;
  --c-mint:#23D3A4;
  --c-bg:#F7F4EF;
  --c-surface:#FFFFFF;
  --c-text:#1C1730;
  --c-text-2:#5D5673;
  --c-line:#E6E1DA;

  --radius:16px;
  --radius-sm:10px;
  --pill:999px;

  --shadow-soft:0 6px 24px rgba(23,16,42,.08);
  --shadow-soft-lg:0 18px 44px rgba(23,16,42,.14);
  --shadow-glow:0 18px 40px rgba(122,59,240,.28);
  --shadow-glow-sm:0 10px 26px rgba(122,59,240,.22);

  --sp-1:4px;  --sp-2:8px;  --sp-3:12px; --sp-4:16px;
  --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px;
  --sp-9:88px; --sp-10:104px;

  --wrap:1200px;
  /* 断点：small <640 / medium 640-1023 / large 1024-1439 / xlarge >=1440 */
}

/* ===================== reset / base ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
button{font-family:inherit;cursor:pointer;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.2px;}
h1{font-size:clamp(28px,4.6vw,48px);font-weight:800;}
h2{font-size:clamp(24px,3vw,32px);}
h3{font-size:21px;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.04em;}

/* ===================== 容器 ===================== */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 20px;
}
.section{padding:var(--sp-9) 0;}
.section--tight{padding:var(--sp-7) 0;}
.section--dark{background:var(--c-ink-1);color:#fff;}
.section--dark h2,.section--dark h3{color:#fff;}

.section-head{margin-bottom:var(--sp-6);max-width:760px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{position:relative;padding-left:18px;}
.section-title::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:2px;
  background:var(--c-primary);
}
.section-head.center .section-title{padding-left:18px;display:inline-block;}
.section-head.center .section-title::before{left:-2px;}
.section-sub{margin-top:var(--sp-3);color:var(--c-text-2);font-size:15.5px;line-height:1.8;}
.section--dark .section-sub{color:rgba(255,255,255,.72);}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border:1px solid transparent;border-radius:var(--pill);
  font-size:15.5px;font-weight:600;line-height:1.2;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-glow-sm);}
.btn-primary:hover{background:#6a2ee0;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-glow);}
.btn-primary:active{transform:translateY(0);background:#5f28cf;}
.btn-ghost{border-color:rgba(255,255,255,.42);color:#fff;background:rgba(255,255,255,.04);}
.btn-ghost:hover{border-color:var(--c-warm);color:var(--c-warm);transform:translateY(-2px);}
.btn-outline{border-color:var(--c-warm);color:#7a5410;background:transparent;}
.btn-outline:hover{background:var(--c-warm);color:#2b1c02;transform:translateY(-2px);}
.btn-line{border-color:var(--c-line);color:var(--c-text);background:#fff;}
.btn-line:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);}

/* ===================== 标签 / 徽章 ===================== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(122,59,240,.12);color:var(--c-primary);
}
.tag-warm{background:transparent;border:1px solid rgba(255,178,63,.6);color:var(--c-warm);}
.tag-mint{background:rgba(35,211,164,.14);color:#0d8a69;}
.tag-plain{background:rgba(255,255,255,.1);color:rgba(255,255,255,.86);}

.chip{
  display:inline-block;padding:3px 10px;margin:0 6px 6px 0;
  border-radius:var(--pill);border:1px solid var(--c-line);
  font-size:12.5px;color:var(--c-text-2);background:#fff;
}

/* ===================== 导航 ===================== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-solid{
  background:rgba(23,16,42,.97);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 12px 32px rgba(10,6,20,.32);
  backdrop-filter:saturate(140%) blur(6px);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--sp-5);height:76px;
  transition:height .24s ease;
}
.site-header.is-solid .nav-wrap{height:64px;}

.nav-group{display:flex;align-items:center;gap:6px;flex:1 1 0;min-width:0;}
.nav-group.left{justify-content:flex-start;}
.nav-group.right{justify-content:flex-end;}
.nav-link{
  display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:var(--pill);
  color:rgba(255,255,255,.82);font-size:15px;font-weight:500;white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.1);}
.nav-link:active{background:rgba(255,255,255,.16);}
.nav-link.is-active{color:#fff;background:rgba(122,59,240,.32);}
.nav-group.right .btn{margin-left:8px;}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;padding:4px 6px;border-radius:var(--radius-sm);}
.brand:hover .brand-text{color:var(--c-warm);}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-accent));
  color:#fff;font-weight:800;font-size:16px;
  box-shadow:0 8px 18px rgba(122,59,240,.4);
}
.brand-text{font-size:17px;font-weight:700;color:#fff;white-space:nowrap;transition:color .2s ease;}
.brand-text em{font-style:normal;color:var(--c-warm);}

.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.22);
  border-radius:12px;background:rgba(255,255,255,.06);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:#fff;
  transform:translateX(-50%);transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;}
.nav-toggle span::after{content:"";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);}

.mobile-menu{
  display:none;background:rgba(23,16,42,.99);
  border-top:1px solid rgba(255,255,255,.08);
  padding:12px 20px 22px;
}
.mobile-menu.is-open{display:block;}
.mobile-menu a{
  display:flex;align-items:center;min-height:48px;
  padding:0 12px;border-radius:12px;
  color:rgba(255,255,255,.86);font-size:15.5px;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-menu a:hover{background:rgba(255,255,255,.08);color:#fff;}
.mobile-menu a.is-active{background:rgba(122,59,240,.28);color:#fff;}
.mobile-menu .btn{margin-top:14px;border-bottom:0;justify-content:center;}

/* ===================== Hero（深色小 Hero） ===================== */
.hero-mini{
  position:relative;
  padding:148px 0 76px;
  color:#fff;
  background:
    linear-gradient(180deg,rgba(23,16,42,.94),rgba(23,16,42,.98)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  background-color:var(--c-ink-1);
  overflow:hidden;
}
.hero-mini::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:radial-gradient(circle,rgba(122,59,240,.34),transparent 66%);
  pointer-events:none;
}
.hero-mini .wrap{position:relative;z-index:1;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:var(--pill);
  border:1px solid rgba(255,178,63,.6);color:var(--c-warm);
  font-size:12.5px;font-weight:600;letter-spacing:.08em;margin-bottom:22px;
}
.hero-mini h1{max-width:820px;margin-bottom:18px;}
.hero-sub{
  max-width:660px;font-size:17px;line-height:1.9;
  color:rgba(255,255,255,.76);margin-bottom:32px;
}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px;
}
.stat-card{
  flex:0 1 200px;min-width:160px;
  padding:16px 20px;border-radius:var(--radius);
  background:var(--c-ink-2);border:1px solid rgba(255,255,255,.08);
}
.stat-num{font-size:26px;font-weight:800;color:var(--c-warm);line-height:1.2;}
.stat-label{font-size:13px;color:rgba(255,255,255,.66);margin-top:4px;}

/* ===================== 快速跳转条 ===================== */
.quickbar{
  margin-top:-36px;position:relative;z-index:5;
}
.quickbar-inner{
  background:#fff;border-radius:var(--radius);
  box-shadow:var(--shadow-soft-lg);
  padding:20px 24px;
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  border:1px solid rgba(230,225,218,.9);
}
.quickbar form{flex:1 1 320px;display:flex;gap:10px;margin:0;}
.quick-input{
  flex:1 1 auto;height:48px;padding:0 18px;border-radius:var(--radius-sm);
  border:1px solid var(--c-line);background:#FCFBF9;font-size:15px;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.quick-input::placeholder{color:#9c96a8;}
.quick-input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(122,59,240,.12);
}
.quick-jumps{display:flex;flex-wrap:wrap;gap:8px;flex:1 1 100%;}
.quick-jumps a{
  padding:6px 14px;border-radius:var(--pill);font-size:13px;font-weight:600;
  background:rgba(122,59,240,.1);color:var(--c-primary);
}
.quick-jumps a:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px);}

/* ===================== 入口卡片网格 ===================== */
.entry-grid{margin-top:0;}
.entry-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border-radius:var(--radius);overflow:hidden;
  border:1px solid rgba(230,225,218,.85);
  box-shadow:var(--shadow-soft);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-soft-lg);border-color:rgba(122,59,240,.45);}
.entry-thumb{
  position:relative;aspect-ratio:3/4;overflow:hidden;background:#e9e3f7;
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.entry-card:hover .entry-thumb img{transform:scale(1.04);}
.entry-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(23,16,42,0) 42%,rgba(23,16,42,.72) 100%);
}
.entry-badge{
  position:absolute;left:12px;top:12px;z-index:2;
  padding:4px 11px;border-radius:var(--pill);
  font-size:12px;font-weight:600;color:#fff;
  background:rgba(122,59,240,.88);
}
.entry-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.entry-body h3{font-size:18px;}
.entry-body p{font-size:14px;line-height:1.75;color:var(--c-text-2);margin:0;}
.entry-more{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
}
.entry-more::after{content:"→";transition:transform .2s ease;}
.entry-card:hover .entry-more::after{transform:translateX(4px);}

/* ===================== 步骤说明 ===================== */
.steps-row{margin-top:var(--sp-2);}
.step-item{
  height:100%;padding:26px 24px;border-radius:var(--radius);
  background:#fff;border:1px solid rgba(230,225,218,.85);
  box-shadow:var(--shadow-soft);position:relative;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-item:hover{transform:translateY(-3px);border-color:rgba(255,178,63,.7);box-shadow:var(--shadow-soft-lg);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;margin-bottom:16px;
  background:rgba(122,59,240,.12);color:var(--c-primary);
  font-weight:800;font-size:16px;
}
.step-item:hover .step-num{background:var(--c-warm);color:#2b1c02;}
.step-item h3{font-size:18px;margin-bottom:8px;}
.step-item p{font-size:14.5px;color:var(--c-text-2);margin:0;}

/* ===================== 交叉栏目卡 ===================== */
.cross-card{
  display:flex;align-items:center;gap:18px;height:100%;
  padding:20px;border-radius:var(--radius);
  background:var(--c-ink-2);border:1px solid rgba(255,255,255,.1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.cross-card:hover{transform:translateY(-4px);border-color:rgba(122,59,240,.75);box-shadow:var(--shadow-glow);}
.cross-thumb{
  flex:0 0 84px;width:84px;height:84px;border-radius:12px;overflow:hidden;background:#312550;
}
.cross-thumb img{width:100%;height:100%;object-fit:cover;}
.cross-card h3{font-size:17px;color:#fff;margin-bottom:6px;}
.cross-card p{font-size:13.5px;color:rgba(255,255,255,.7);margin:0;}
.cross-card .arrow{margin-left:auto;color:var(--c-warm);font-size:18px;flex:0 0 auto;}

/* ===================== FAQ ===================== */
.faq-panel{
  background:#fff;border-radius:var(--radius);overflow:hidden;
  border:1px solid rgba(230,225,218,.9);box-shadow:var(--shadow-soft);
}
.faq-panel .accordion{margin:0;background:transparent;border:0;}
.faq-panel .accordion-item{border:0;border-bottom:1px solid var(--c-line);}
.faq-panel .accordion-item:last-child{border-bottom:0;}
.faq-panel .accordion-title{
  position:relative;padding:22px 56px 22px 24px;
  font-size:17px;font-weight:600;color:var(--c-text);
  background:transparent;border:0;line-height:1.6;
  transition:color .2s ease,background-color .2s ease;
}
.faq-panel .accordion-title:hover{color:var(--c-primary);background:#FBF9FD;}
.faq-panel .accordion-title::before{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;margin:0;border:0;background:none;
  font-size:22px;font-weight:400;line-height:1;color:var(--c-primary);
  display:block;
}
.faq-panel .accordion-title[aria-expanded="true"]::before{content:"−";}
.faq-panel .accordion-content{
  padding:0 24px 22px;font-size:15.5px;line-height:1.9;color:var(--c-text-2);
  border:0;background:transparent;
}
.faq-panel .accordion-content p{font-size:15.5px;line-height:1.9;}

/* ===================== CTA 条 ===================== */
.cta-bar{
  border-radius:20px;padding:34px 36px;
  background:linear-gradient(120deg,var(--c-ink-1),var(--c-ink-2));
  color:#fff;display:flex;flex-wrap:wrap;align-items:center;gap:20px;
  box-shadow:var(--shadow-glow);
}
.cta-bar h2{font-size:clamp(19px,2.2vw,22px);font-weight:700;flex:1 1 340px;}
.cta-bar p{font-size:14.5px;color:rgba(255,255,255,.72);margin:6px 0 0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.cta-link{font-size:14.5px;font-weight:600;color:var(--c-warm);}
.cta-link:hover{color:#fff;}

/* ===================== 页脚 ===================== */
.site-footer{
  background:var(--c-ink-1);color:rgba(255,255,255,.72);
  padding:var(--sp-8) 0 var(--sp-5);
  margin-top:0;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:280px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.04em;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-list a:hover{color:var(--c-warm);}
.footer-bottom{
  margin-top:var(--sp-7);padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.66);}
.footer-bottom a:hover{color:var(--c-warm);}

/* ===================== 动效 ===================== */
.fade-up{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease;}
.fade-up.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .fade-up{opacity:1;transform:none;}
}

/* ===================== 响应式 ===================== */
@media (max-width:1023px){
  .nav-group{display:none;}
  .nav-toggle{display:inline-block;}
  .brand-text{font-size:16px;}
  .hero-mini{padding:124px 0 68px;}
  .section{padding:64px 0;}
  .section--tight{padding:48px 0;}
}
@media (max-width:639px){
  body{font-size:16px;}
  .wrap{padding:0 16px;}
  .brand-text em{display:none;}
  .brand-text{font-size:14.5px;white-space:normal;line-height:1.35;max-width:180px;}
  .hero-mini{padding:112px 0 60px;}
  .hero-sub{font-size:15.5px;}
  .hero-stats{gap:10px;}
  .stat-card{flex:1 1 100%;}
  .quickbar-inner{padding:16px;gap:12px;}
  .quickbar form{flex-direction:column;}
  .quickbar .btn{width:100%;}
  .section{padding:56px 0;}
  .entry-body{padding:16px 16px 18px;}
  .entry-body h3{font-size:16.5px;}
  .cta-bar{padding:24px 20px;border-radius:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .cross-card{flex-wrap:wrap;gap:14px;}
  .cross-card .arrow{display:none;}
  .faq-panel .accordion-title{padding:18px 48px 18px 18px;font-size:16px;}
  .faq-panel .accordion-content{padding:0 18px 20px;}
  .footer-bottom{flex-direction:column;}
}
@media (min-width:1024px){
  .sticky-cta{display:none;}
}
@media (max-width:1023px){
  .sticky-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    display:flex;align-items:center;gap:12px;
    min-height:64px;padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    background:rgba(23,16,42,.97);
    border-top:1px solid rgba(255,255,255,.12);
  }
  .sticky-cta .btn{flex:1 1 auto;}
  .sticky-cta .cta-link{flex:0 0 auto;}
  body{padding-bottom:72px;}
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root{
  --c-ink-1:#17102A;
  --c-ink-2:#241A3D;
  --c-primary:#7A3BF0;
  --c-primary-d:#6530CE;
  --c-accent:#FF2E74;
  --c-warm:#FFB23F;
  --c-mint:#23D3A4;
  --c-bg:#F7F4EF;
  --c-surface:#FFFFFF;
  --c-text:#1C1730;
  --c-text-2:#5D5673;
  --c-line:#E6E1DA;
  --r-card:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-soft:0 6px 24px rgba(23,16,42,.08);
  --sh-soft-2:0 14px 34px rgba(23,16,42,.14);
  --sh-glow:0 18px 40px rgba(122,59,240,.28);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px; --sp-10:104px;
  --wrap:1200px;
  --nav-h:76px;
}
/* ===== reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:12px;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
a:hover{color:var(--c-accent);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--c-text);}
h1{font-size:clamp(28px,4.6vw,52px);font-weight:800;letter-spacing:-.01em;}
h2{font-size:clamp(23px,2.6vw,32px);font-weight:700;}
h3{font-size:21px;font-weight:700;}
h4{font-size:17px;font-weight:600;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(122,59,240,.2);}
/* ===== 容器 ===== */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px;}
.wrap-wide{max-width:1320px;}
.section{padding:var(--sp-9) 0;}
.section-sm{padding:var(--sp-8) 0;}
.section-dark{background:var(--c-ink-1);color:#EDE9F7;}
.section-dark h2,.section-dark h3{color:#fff;}
.section-cream{background:var(--c-bg);}
.section-white{background:var(--c-surface);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:var(--sp-4);margin-bottom:var(--sp-6);}
.section-head .lead{max-width:640px;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);text-transform:uppercase;margin-bottom:10px;
}
.section-kicker::before{content:"";width:22px;height:4px;border-radius:4px;background:var(--c-accent);}
.section-sub{color:var(--c-text-2);font-size:15px;margin:10px 0 0;line-height:1.85;}
.section-dark .section-sub{color:#B9B0D4;}
/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-ink-1);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background-color .24s ease,box-shadow .24s ease,height .24s ease;
}
.site-header.is-scrolled{
  background:var(--c-ink-2);
  box-shadow:0 10px 30px rgba(11,6,24,.4);
  border-bottom-color:rgba(122,59,240,.35);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:var(--nav-h);}
.site-header.is-scrolled .nav-wrap{min-height:60px;}
.nav-group{display:flex;align-items:center;gap:4px;flex:1 1 0;min-width:0;}
.nav-group.right{justify-content:flex-end;}
.nav-link{
  display:inline-flex;align-items:center;
  padding:8px 12px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:#CFC7E6;white-space:nowrap;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(122,59,240,.22);}
.nav-link.is-active{color:#fff;background:rgba(122,59,240,.3);box-shadow:inset 0 0 0 1px rgba(255,178,63,.45);}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:#fff;}
.brand:hover{color:#fff;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  background:var(--c-primary);color:#fff;font-weight:800;font-size:16px;
  box-shadow:0 6px 18px rgba(122,59,240,.5);
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.01em;color:#fff;}
.brand-text em{font-style:normal;color:var(--c-warm);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.2);
  background:transparent;border-radius:var(--r-sm);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:#fff;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-menu{display:none;flex-direction:column;padding:8px 20px 20px;background:var(--c-ink-2);border-top:1px solid rgba(255,255,255,.08);}
.mobile-menu.is-open{display:flex;}
.mobile-menu a{
  display:flex;align-items:center;min-height:48px;
  color:#D6CEEE;font-size:16px;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.mobile-menu a:hover{color:var(--c-warm);}
.mobile-menu .btn{margin-top:14px;justify-content:center;border-bottom:none;}
/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.02em;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-glow);}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-2px);box-shadow:0 22px 44px rgba(122,59,240,.4);}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 20px rgba(122,59,240,.34);}
.btn-ghost{border-color:rgba(255,178,63,.65);color:var(--c-warm);background:transparent;}
.btn-ghost:hover{background:rgba(255,178,63,.12);color:var(--c-warm);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--c-ink-1);}
.btn-light:hover{background:#F2ECFF;color:var(--c-ink-1);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:rgba(122,59,240,.12);color:var(--c-primary);
}
.badge-warm{background:rgba(255,178,63,.14);color:#B87413;box-shadow:inset 0 0 0 1px rgba(255,178,63,.5);}
.badge-dark{background:rgba(255,255,255,.1);color:#E6DEF9;}
.chip{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(122,59,240,.08);color:#5B33AE;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.chip-mint{background:rgba(35,211,164,.14);color:#12866A;}
.chip-warm{background:rgba(255,178,63,.16);color:#A96A0B;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
/* ===== 面包屑 ===== */
.crumb-bar{background:var(--c-ink-1);padding:22px 0 30px;border-bottom:1px solid rgba(255,255,255,.07);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9F96BE;}
.breadcrumb a{color:#C9BFE6;font-weight:500;}
.breadcrumb a:hover{color:var(--c-warm);}
.breadcrumb .sep{color:#5B5378;}
.breadcrumb .current{color:var(--c-warm);font-weight:600;}
/* ===== 引导分栏区 ===== */
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-7);align-items:center;}
.intro-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-soft-2);background:linear-gradient(160deg,#2A1E49,#17102A);}
.intro-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
.intro-media .media-tag{
  position:absolute;top:16px;left:16px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(23,16,42,.72);color:var(--c-warm);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.intro-copy h2{margin-bottom:14px;}
.intro-copy p{color:var(--c-text-2);font-size:16px;line-height:1.9;}
.point-list{margin-top:24px;border-top:1px solid var(--c-line);}
.point-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--c-line);align-items:flex-start;}
.point-item .dot{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;margin-top:4px;
  display:grid;place-items:center;
  background:rgba(255,178,63,.16);color:#A96A0B;font-size:13px;font-weight:800;
}
.point-item strong{display:block;font-size:16px;font-weight:700;color:var(--c-text);}
.point-item span{display:block;font-size:14px;color:var(--c-text-2);line-height:1.8;}
/* ===== 编号清单 ===== */
.pick-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-soft);}
.pick-row{
  display:flex;gap:22px;align-items:flex-start;
  padding:24px 26px;border-bottom:1px solid var(--c-line);
  transition:background-color .2s ease,box-shadow .2s ease;
}
.pick-row:last-child{border-bottom:none;}
.pick-row:hover{background:#FBF9F6;}
.pick-row:hover .pick-no{background:var(--c-warm);color:#3A2606;}
.pick-no{
  flex:0 0 auto;width:56px;height:56px;border-radius:14px;
  display:grid;place-items:center;
  background:var(--c-primary);color:#fff;
  font-size:17px;font-weight:800;letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
  transition:background-color .2s ease,color .2s ease;
}
.pick-body{min-width:0;flex:1 1 auto;}
.pick-body h3{font-size:19px;margin-bottom:6px;}
.pick-body p{font-size:14.5px;color:var(--c-text-2);margin:0;line-height:1.8;}
.pick-go{
  flex:0 0 auto;align-self:center;
  font-size:14px;font-weight:700;color:var(--c-primary);
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
}
.pick-row:hover .pick-go{color:var(--c-accent);}
/* ===== 对比表 ===== */
.table-shell{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-soft);}
.table-scroll{overflow-x:auto;}
table.cmp{width:100%;min-width:760px;border-collapse:collapse;font-size:15px;}
table.cmp caption{text-align:left;padding:20px 24px 0;font-size:14px;color:var(--c-text-2);}
table.cmp th,table.cmp td{padding:16px 20px;text-align:left;vertical-align:top;border-bottom:1px solid var(--c-line);}
table.cmp thead th{
  background:var(--c-ink-1);color:#fff;font-size:14px;font-weight:700;
  letter-spacing:.03em;border-bottom:none;
}
table.cmp thead th:first-child{color:var(--c-warm);}
table.cmp tbody tr:nth-child(even){background:#FAF8F4;}
table.cmp tbody tr:hover{background:rgba(122,59,240,.06);}
table.cmp td:first-child{font-weight:700;color:var(--c-text);}
table.cmp td{color:var(--c-text-2);}
.table-note{font-size:13px;color:var(--c-text-2);margin:14px 0 0;}
/* ===== 口碑条 ===== */
.rail-wrap{position:relative;}
.rail-wrap::before,.rail-wrap::after{
  content:"";position:absolute;top:0;bottom:0;width:8%;pointer-events:none;z-index:2;
}
.rail-wrap::before{left:0;background:linear-gradient(90deg,var(--c-ink-1),rgba(23,16,42,0));}
.rail-wrap::after{right:0;background:linear-gradient(270deg,var(--c-ink-1),rgba(23,16,42,0));}
.rail{
  display:flex;gap:16px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;
  -ms-overflow-style:none;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.voice-card{
  flex:0 0 auto;width:300px;scroll-snap-align:start;
  background:var(--c-ink-2);border:1px solid rgba(255,255,255,.09);
  border-radius:var(--r-card);padding:22px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.voice-card:hover{transform:translateY(-4px);border-color:rgba(122,59,240,.6);box-shadow:0 18px 36px rgba(11,6,24,.45);}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(255,178,63,.18);color:var(--c-warm);
  font-size:15px;font-weight:700;
}
.voice-name{font-size:14px;font-weight:600;color:#fff;}
.stars{color:var(--c-warm);font-size:13px;letter-spacing:2px;margin-top:2px;}
.voice-card p{margin:0;font-size:15px;line-height:1.85;color:#D3CBE8;}
/* ===== FAQ ===== */
.faq-shell{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-soft);}
ul.accordion{margin:0;background:transparent;border:none;}
.accordion-item{border-bottom:1px solid var(--c-line);}
.accordion-item:last-child{border-bottom:none;}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--c-text);
  background:transparent;border:none;
}
.accordion-title:hover{background:#FBF9F6;color:var(--c-primary);}
.accordion-title::before{display:none;}
.accordion-title::after{
  content:"+";font-size:20px;font-weight:600;color:var(--c-primary);
  line-height:1;flex:0 0 auto;
}
.accordion-item.is-active .accordion-title::after{content:"–";color:var(--c-accent);}
.accordion-content{padding:0 24px 22px;font-size:15.5px;line-height:1.9;color:var(--c-text-2);background:transparent;border:none;}
.accordion-content p:last-child{margin-bottom:0;}
/* ===== CTA 条 ===== */
.cta-band{background:var(--c-ink-1);position:relative;overflow:hidden;}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(255,46,116,.28),rgba(255,46,116,0) 68%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
.cta-inner h2{font-size:clamp(20px,2.2vw,24px);color:#fff;}
.cta-inner p{margin:8px 0 0;color:#B9B0D4;font-size:14.5px;}
/* ===== 内链卡 ===== */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.link-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-soft);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.link-card:hover{transform:translateY(-4px);border-color:rgba(122,59,240,.5);box-shadow:var(--sh-soft-2);}
.link-card h3{font-size:18px;margin-bottom:8px;color:var(--c-text);}
.link-card p{font-size:14px;color:var(--c-text-2);margin:0;line-height:1.8;}
.link-card .go{display:inline-block;margin-top:14px;font-size:14px;font-weight:700;color:var(--c-primary);}
.link-card:hover .go{color:var(--c-accent);}
/* ===== 页脚 ===== */
.site-footer{background:var(--c-ink-1);color:#B9B0D4;padding:var(--sp-8) 0 0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-desc{font-size:14px;color:#9F96BE;line-height:1.9;margin:0;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:#B0A7CC;}
.footer-list a:hover{color:var(--c-warm);}
.footer-bottom{
  margin-top:var(--sp-7);padding:22px 0;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8B82A8;
}
.footer-bottom a{color:#B0A7CC;}
.footer-bottom a:hover{color:var(--c-warm);}
/* ===== 移动吸底 CTA ===== */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:var(--c-ink-2);border-top:1px solid rgba(255,255,255,.12);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:12px;
}
.sticky-cta .txt{font-size:13px;color:#C6BDDF;line-height:1.4;}
.sticky-cta .txt strong{display:block;color:#fff;font-size:14px;}
/* ===== 动效 ===== */
@keyframes riseIn{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:translateY(0);}}
.rise{animation:riseIn .5s ease both;}
/* ===== 响应式 ===== */
@media (max-width:1023px){
  .nav-group{display:none;}
  .nav-toggle{display:flex;}
  .brand-text{font-size:15px;}
  .section{padding:64px 0;}
  .section-sm{padding:56px 0;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .link-cards{grid-template-columns:1fr 1fr;}
  .sticky-cta{display:flex;}
  body{padding-bottom:70px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .wrap{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:24px;}
  .brand-text{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .pick-row{flex-wrap:wrap;gap:16px;padding:20px;}
  .pick-no{width:48px;height:48px;border-radius:12px;font-size:15px;}
  .pick-go{width:100%;}
  .voice-card{width:250px;}
  .link-cards{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;}
  .accordion-title{font-size:16px;padding:18px;}
  .accordion-content{padding:0 18px 20px;}
  h1{font-size:clamp(26px,7.4vw,32px);}
}
@media (max-width:380px){
  .brand-text{display:none;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --c-ink-1:#17102A;
  --c-ink-2:#241A3D;
  --c-primary:#7A3BF0;
  --c-accent:#FF2E74;
  --c-warm:#FFB23F;
  --c-mint:#23D3A4;
  --c-bg:#F7F4EF;
  --c-surface:#FFFFFF;
  --c-text:#1C1730;
  --c-text-2:#5D5673;
  --c-line:#E6E1DA;

  --radius:16px;
  --radius-sm:10px;
  --radius-pill:999px;

  --shadow-soft:0 6px 24px rgba(23,16,42,.08);
  --shadow-mid:0 12px 32px rgba(23,16,42,.12);
  --shadow-glow:0 18px 40px rgba(122,59,240,.28);

  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px;
  --s-5:24px; --s-6:32px; --s-7:48px; --s-8:64px;
  --s-9:88px; --s-10:104px;

  /* 断点参考
     small  <640px
     medium 640–1023px
     large  1024–1439px
     xlarge ≥1440px  */
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  text-align:left;
  letter-spacing:.1px;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--c-accent);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(122,59,240,.22);}

/* ============ 排版层级 ============ */
h1{font-size:clamp(28px,4.6vw,52px);font-weight:800;line-height:1.3;letter-spacing:-.5px;}
h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;}
h3{font-size:21px;font-weight:700;line-height:1.35;}
h4{font-size:17px;font-weight:600;line-height:1.4;}
p{line-height:1.9;}

/* ============ 容器 ============ */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.wrap-wide{max-width:1320px;}
.section{padding:var(--s-10) 0;}
.section-tight{padding:var(--s-8) 0;}
.on-dark{background:var(--c-ink-1);color:#EFEAFA;}
.on-dark h2,.on-dark h3{color:#fff;}
.on-light{background:var(--c-bg);}

.sec-head{max-width:760px;margin-bottom:var(--s-7);}
.sec-head h2{position:relative;padding-left:18px;margin-bottom:var(--s-3);}
.sec-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--c-primary);}
.sec-head p{color:var(--c-text-2);font-size:16px;}
.on-dark .sec-head p{color:rgba(239,234,250,.72);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:var(--radius-pill);
  border:1px solid rgba(255,178,63,.55);
  color:var(--c-warm);font-size:13px;font-weight:600;letter-spacing:1.2px;
  font-variant-numeric:tabular-nums;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-ink-1);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .24s ease,height .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:var(--c-ink-2);
  box-shadow:0 10px 30px rgba(23,16,42,.4);
  border-bottom-color:rgba(255,255,255,.1);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:var(--s-5);height:76px;transition:height .24s ease;}
.site-header.is-scrolled .nav-wrap{height:60px;}
.nav-group{display:flex;align-items:center;gap:6px;flex:1 1 0;}
.nav-group.right{justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:var(--radius-pill);
  color:rgba(239,234,250,.82);font-size:15px;font-weight:500;white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(122,59,240,.18);}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-accent);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;padding:4px 8px;border-radius:var(--radius-pill);}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-accent));
  color:#fff;font-weight:800;font-size:16px;letter-spacing:0;
  box-shadow:0 6px 18px rgba(122,59,240,.45);
}
.brand-text{color:#fff;font-size:16px;font-weight:700;letter-spacing:.3px;white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--c-warm);}
.brand:hover .brand-text{color:#fff;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-glow);}
.btn-primary:hover{background:#6a2ee0;color:#fff;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,178,63,.6);}
.btn-ghost:hover{background:rgba(255,178,63,.12);color:var(--c-warm);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--c-ink-1);box-shadow:var(--shadow-soft);}
.btn-light:hover{background:#fff;color:var(--c-primary);transform:translateY(-2px);}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:#fff;content:"";
  transition:transform .2s ease,opacity .2s 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%) rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) rotate(-45deg);top:0;}

.mobile-menu{display:none;flex-direction:column;padding:8px 20px 20px;background:var(--c-ink-2);border-top:1px solid rgba(255,255,255,.08);}
.mobile-menu.is-open{display:flex;}
.mobile-menu a{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:12px;
  color:rgba(239,234,250,.86);font-size:16px;font-weight:500;
}
.mobile-menu a:hover,.mobile-menu a.is-active{background:rgba(122,59,240,.2);color:#fff;}
.mobile-menu .btn{margin-top:10px;justify-content:center;color:#fff;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 12% 0%,rgba(122,59,240,.32),transparent 62%),
    radial-gradient(700px 380px at 92% 18%,rgba(255,46,116,.2),transparent 66%),
    var(--c-ink-1);
  color:#EFEAFA;
  padding:var(--s-9) 0 var(--s-10);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 40% 30%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(70% 60% at 40% 30%,#000,transparent 78%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:var(--s-8);align-items:center;}
.hero h1{margin:var(--s-5) 0 var(--s-4);color:#fff;}
.hero h1 span{color:var(--c-warm);}
.hero-lead{font-size:18px;line-height:1.85;color:rgba(239,234,250,.8);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:var(--s-3);margin-top:var(--s-6);}
.hero-points{display:flex;flex-wrap:wrap;gap:var(--s-6);margin-top:var(--s-7);padding-top:var(--s-5);border-top:1px solid rgba(255,255,255,.12);}
.hero-point{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(239,234,250,.72);}
.hero-point i{color:var(--c-mint);font-size:15px;}

.hero-figure{
  position:relative;border-radius:22px;overflow:hidden;
  aspect-ratio:3 / 4;border:1px solid rgba(255,255,255,.14);
  background:var(--c-ink-2);box-shadow:var(--shadow-glow);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;opacity:.9;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(23,16,42,.15) 0%,rgba(23,16,42,.72) 100%);
}
.hero-figure .play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:64px;height:64px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(122,59,240,.4);border:1px solid rgba(255,255,255,.7);
  color:#fff;font-size:18px;z-index:3;backdrop-filter:blur(2px);
}
.hero-figure .cap{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:3;
  color:#fff;font-size:15px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.hero-figure .dur{
  position:absolute;right:14px;top:14px;z-index:3;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:rgba(23,16,42,.62);border:1px solid rgba(255,255,255,.2);
  color:#fff;font-size:12px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:.6px;
}

/* ============ 时间轴 ============ */
.timeline{position:relative;max-width:900px;margin:0 auto;}
.timeline::before{
  content:"";position:absolute;left:23px;top:18px;bottom:18px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),rgba(255,46,116,.35));
}
.tl-item{position:relative;display:flex;gap:var(--s-5);padding:14px 0;}
.tl-dot{
  flex:0 0 48px;width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;position:relative;z-index:2;
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.5px;
  box-shadow:0 8px 20px rgba(122,59,240,.32);
  transition:background .2s ease,transform .2s ease;
}
.tl-item:hover .tl-dot{background:var(--c-warm);color:var(--c-ink-1);transform:translateY(-2px);}
.tl-body{
  flex:1 1 auto;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius);padding:18px 24px;box-shadow:var(--shadow-soft);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tl-item:hover .tl-body{transform:translateY(-3px);box-shadow:var(--shadow-mid);border-color:rgba(122,59,240,.35);}
.tl-body h3{margin-bottom:6px;}
.tl-body p{color:var(--c-text-2);font-size:15px;}

/* ============ 横滑轨道 ============ */
.rail-section{background:var(--c-ink-1);color:#EFEAFA;}
.rail-shell{position:relative;}
.rail{
  display:flex;gap:18px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{display:none;}
.reel{
  position:relative;flex:0 0 240px;width:240px;aspect-ratio:3 / 4;
  border-radius:var(--radius);overflow:hidden;scroll-snap-align:start;
  border:1px solid rgba(255,255,255,.12);background:var(--c-ink-2);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.reel img{width:100%;height:100%;object-fit:cover;opacity:.86;transition:opacity .22s ease;}
.reel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(23,16,42,.05) 30%,rgba(23,16,42,.86) 100%);
}
.reel:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:var(--shadow-glow);}
.reel:hover img{opacity:1;}
.reel-tag{
  position:absolute;left:12px;top:12px;z-index:3;
  padding:4px 12px;border-radius:var(--radius-pill);
  background:rgba(122,59,240,.85);color:#fff;font-size:12px;font-weight:600;
}
.reel-time{
  position:absolute;right:12px;bottom:12px;z-index:3;
  font-size:12px;font-weight:600;color:rgba(239,234,250,.86);
  font-variant-numeric:tabular-nums;letter-spacing:.6px;
}
.reel-title{
  position:absolute;left:14px;right:64px;bottom:12px;z-index:3;
  color:#fff;font-size:15px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-shell::before,.rail-shell::after{
  content:"";position:absolute;top:0;bottom:22px;width:8%;z-index:4;pointer-events:none;
}
.rail-shell::before{left:0;background:linear-gradient(90deg,var(--c-ink-1),rgba(23,16,42,0));}
.rail-shell::after{right:0;background:linear-gradient(270deg,var(--c-ink-1),rgba(23,16,42,0));}

/* ============ 提示卡 ============ */
.tip-card{
  display:flex;gap:20px;height:100%;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-soft);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tip-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-mid);border-color:rgba(122,59,240,.3);}
.tip-icon{
  flex:0 0 52px;width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(122,59,240,.1);color:var(--c-primary);
  font-size:20px;font-weight:800;
}
.tip-card h3{margin-bottom:6px;}
.tip-card p{color:var(--c-text-2);font-size:15px;}
.grid-row{margin-bottom:24px;}
.grid-row:last-child{margin-bottom:0;}

.jump-card{
  display:flex;flex-direction:column;justify-content:center;gap:10px;height:100%;
  border-radius:var(--radius);padding:28px;
  background:linear-gradient(140deg,var(--c-ink-1),var(--c-ink-2));
  color:#EFEAFA;border:1px solid rgba(122,59,240,.4);
}
.jump-card h3{color:#fff;}
.jump-card p{color:rgba(239,234,250,.72);font-size:15px;}
.jump-card .link{color:var(--c-warm);font-weight:700;font-size:15px;}

/* ============ FAQ ============ */
.faq-shell{max-width:900px;margin:0 auto;}
.faq-accordion{border-radius:var(--radius);overflow:hidden;background:var(--c-surface);border:1px solid var(--c-line);box-shadow:var(--shadow-soft);}
.faq-accordion .accordion-item{border-bottom:1px solid var(--c-line);}
.faq-accordion .accordion-item:last-child{border-bottom:0;}
.faq-accordion .accordion-title{
  display:flex;align-items:center;gap:14px;
  background:transparent;border:0;padding:20px 24px;
  font-size:17px;font-weight:600;color:var(--c-text);line-height:1.6;
  transition:background .2s ease,color .2s ease;
}
.faq-accordion .accordion-title::before{display:none;}
.faq-accordion .accordion-title::after{
  content:"+";margin-left:auto;flex:0 0 auto;
  width:28px;height:28px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(122,59,240,.1);color:var(--c-primary);
  font-size:18px;font-weight:700;line-height:1;
}
.faq-accordion .accordion-item.is-active .accordion-title::after{content:"−";background:var(--c-primary);color:#fff;}
.faq-accordion .accordion-title:hover{background:rgba(122,59,240,.05);color:var(--c-primary);}
.faq-accordion .accordion-content{background:transparent;padding:0 24px 22px;border:0;}
.faq-accordion .accordion-content p{color:var(--c-text-2);font-size:15.5px;margin-top:2px;}

/* ============ 内链 / CTA ============ */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.link-card{
  display:flex;flex-direction:column;gap:8px;
  padding:24px;border-radius:var(--radius);
  background:var(--c-ink-2);border:1px solid rgba(255,255,255,.1);
  color:#EFEAFA;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.link-card:hover{transform:translateY(-3px);border-color:var(--c-primary);box-shadow:var(--shadow-glow);color:#fff;}
.link-card strong{font-size:17px;font-weight:700;color:#fff;}
.link-card span{font-size:14px;color:rgba(239,234,250,.68);}
.link-card i{color:var(--c-warm);font-size:14px;}

.cta-band{
  background:linear-gradient(120deg,var(--c-primary),#5b23c4 55%,var(--c-ink-1));
  border-radius:22px;padding:44px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:var(--s-6);flex-wrap:wrap;
  box-shadow:0 24px 60px rgba(122,59,240,.32);
}
.cta-band h2{color:#fff;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink-1);color:rgba(239,234,250,.72);padding:var(--s-9) 0 var(--s-5);}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;font-size:15px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(239,234,250,.6);max-width:280px;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:rgba(239,234,250,.66);}
.footer-list a:hover{color:var(--c-warm);}
.footer-bottom{
  margin-top:var(--s-7);padding-top:var(--s-5);
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(239,234,250,.5);
}
.footer-bottom a{color:rgba(239,234,250,.66);}
.footer-bottom a:hover{color:var(--c-warm);}

/* ============ 移动吸底 CTA ============ */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  align-items:center;justify-content:space-between;gap:12px;
  height:66px;padding:0 16px calc(0px + env(safe-area-inset-bottom,0px));
  background:var(--c-ink-2);border-top:1px solid rgba(255,255,255,.12);
}
.sticky-cta .txt{color:rgba(239,234,250,.78);font-size:13px;line-height:1.5;}
.sticky-cta .txt b{display:block;color:#fff;font-size:14px;}

/* ============ 动效 ============ */
@keyframes riseIn{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:translateY(0);}}
.rise{animation:riseIn .5s ease both;}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:var(--s-7);}
  .hero-figure{max-width:400px;}
  .nav-group.left .nav-link,.nav-group.right .nav-link{display:none;}
  .nav-toggle{display:block;}
  .link-grid{grid-template-columns:1fr 1fr;}
  .section{padding:72px 0;}
}
@media screen and (max-width:767px){
  body{font-size:16px;}
  .wrap{padding:0 18px;}
  .section{padding:58px 0;}
  .hero{padding:64px 0 72px;}
  .hero-lead{font-size:16.5px;}
  .hero-points{gap:var(--s-4);}
  .cta-band{padding:30px;border-radius:18px;}
  .link-grid{grid-template-columns:1fr;}
  .rail-shell::before,.rail-shell::after{display:none;}
  .reel{flex:0 0 168px;width:168px;}
  .reel-title{font-size:14px;right:56px;}
  .timeline::before{left:20px;}
  .tl-dot{flex:0 0 42px;width:42px;height:42px;font-size:13px;}
  .tl-item{gap:14px;}
  .tl-body{padding:16px 18px;}
  .sticky-cta{display:flex;}
  .site-footer{padding-bottom:88px;}
}
@media screen and (max-width:519px){
  h1{font-size:26px;}
  .sec-head h2{font-size:23px;}
  .hero-figure{max-width:100%;}
  .faq-accordion .accordion-title{padding:16px 18px;font-size:16px;}
  .faq-accordion .accordion-content{padding:0 18px 18px;}
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --c-ink-1:#17102A;
  --c-ink-2:#241A3D;
  --c-primary:#7A3BF0;
  --c-primary-d:#6528D8;
  --c-accent:#FF2E74;
  --c-warm:#FFB23F;
  --c-mint:#23D3A4;
  --c-bg:#F7F4EF;
  --c-surface:#FFFFFF;
  --c-text:#1C1730;
  --c-text-2:#5D5673;
  --c-line:#E6E1DA;
  --c-line-d:rgba(255,255,255,.12);

  --radius-l:16px;
  --radius-s:10px;
  --pill:999px;

  --shadow-soft:0 6px 24px rgba(23,16,42,.08);
  --shadow-mid:0 12px 32px rgba(23,16,42,.12);
  --shadow-dark:0 18px 40px rgba(122,59,240,.28);

  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px;
  --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px;
  --sp-9:88px; --sp-10:104px;

  /* breakpoints: small<640 / medium 640-1023 / large 1024-1439 / xlarge>=1440 */
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}

/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-l)}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease,opacity .2s ease}
a:hover{color:var(--c-primary-d)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--c-text)}
h1{font-size:clamp(28px,4.6vw,48px);font-weight:800;letter-spacing:.01em}
h2{font-size:clamp(24px,3vw,32px);font-weight:700}
h3{font-size:21px;font-weight:700}
h4{font-size:17px;font-weight:600}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

/* ============ 容器 ============ */
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.wrap-narrow{max-width:780px;margin:0 auto;padding:0 20px}
.section{padding:var(--sp-9) 0}
.section-dark{background:var(--c-ink-1);color:#EFEBF7}
.section-dark h2,.section-dark h3{color:#fff}
.section-tint{background:linear-gradient(180deg,#FBF9F5 0%,var(--c-bg) 100%)}

.sec-head{margin-bottom:var(--sp-7);max-width:720px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{position:relative;padding-left:16px}
.sec-head.center h2{padding-left:0}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:4px;background:var(--c-primary);
}
.sec-head.center h2::before{display:none}
.sec-head p{margin:12px 0 0;color:var(--c-text-2);font-size:15.5px}
.section-dark .sec-head p{color:rgba(255,255,255,.7)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--pill);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 24px rgba(122,59,240,.28)}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(122,59,240,.36)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover{border-color:var(--c-warm);color:var(--c-warm);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(122,59,240,.35)}
.btn-outline:hover{background:rgba(122,59,240,.08);border-color:var(--c-primary);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--pill);
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-warm);border:1px solid rgba(255,178,63,.55);background:rgba(255,178,63,.08);
}
.chip{
  display:inline-block;padding:5px 12px;border-radius:var(--pill);
  font-size:12.5px;font-weight:600;color:var(--c-primary);
  background:rgba(122,59,240,.10);
}
.chip-warm{color:#A96A00;background:rgba(255,178,63,.18)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:transparent;
  transition:background-color .24s ease,box-shadow .24s ease,border-color .24s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:var(--c-ink-2);
  border-bottom:1px solid var(--c-line-d);
  box-shadow:0 8px 26px rgba(12,7,28,.35);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:16px;
  transition:height .24s ease;
}
.site-header.is-scrolled .nav-wrap{height:60px}
.nav-group{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;color:rgba(255,255,255,.82);
  font-size:15px;font-weight:500;padding:6px 2px;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  border-radius:2px;background:var(--c-accent);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1);background:var(--c-primary)}

.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:var(--c-primary);color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 8px 20px rgba(122,59,240,.45);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--c-warm);padding:0 1px}
.brand:hover .brand-text{color:#fff}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(255,255,255,.28);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:#fff;
  transform:translateX(-50%);transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0}

.mobile-menu{
  display:none;background:var(--c-ink-2);border-top:1px solid var(--c-line-d);
  padding:8px 20px 22px;
}
.mobile-menu.is-open{display:block}
.mobile-menu a{
  display:flex;align-items:center;min-height:48px;
  color:rgba(255,255,255,.85);font-size:15.5px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-menu a:hover{color:var(--c-warm)}
.mobile-menu .btn{margin-top:16px;border-bottom:0;color:#fff;justify-content:center}

/* ============ Hero ============ */
.hero{
  background:var(--c-ink-1);
  background-image:linear-gradient(180deg,rgba(23,16,42,.92),rgba(23,16,42,.98)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  color:#fff;
  padding:calc(var(--sp-8) + 40px) 0 var(--sp-9);
  position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:100% 88px;
  opacity:.5;
}
.hero-inner{position:relative;z-index:1;max-width:780px;margin:0 auto;text-align:center}
.hero h1{margin:22px 0 16px;color:#fff}
.hero-sub{font-size:16.5px;color:rgba(255,255,255,.78);margin:0 auto;max-width:640px}
.hero-meta{
  display:flex;flex-wrap:wrap;justify-content:center;gap:12px 28px;
  margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-meta span{font-size:14px;color:rgba(255,255,255,.72);display:inline-flex;align-items:center;gap:8px}
.hero-meta i{
  width:7px;height:7px;border-radius:50%;background:var(--c-mint);display:inline-block;
}

/* ============ 面包屑 ============ */
.crumb{font-size:13px;color:var(--c-text-2);padding:18px 0 0}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{margin:0 8px;color:#BDB6C7}
.crumb .cur{color:var(--c-primary);font-weight:600}

/* ============ FAQ 分组 ============ */
.faq-group{margin-bottom:var(--sp-7)}
.faq-group:last-child{margin-bottom:0}
.group-head{
  display:flex;align-items:center;gap:14px;margin-bottom:18px;
}
.group-head h3{font-size:22px;position:relative;padding-left:15px}
.group-head h3::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:4px;background:var(--c-primary);
}
.group-head .group-note{font-size:13.5px;color:var(--c-text-2);margin-left:auto}

.accordion.faq-list{
  background:var(--c-surface);border-radius:var(--radius-l);
  box-shadow:var(--shadow-soft);overflow:hidden;margin:0;
}
.accordion-item{border-bottom:1px solid var(--c-line)}
.accordion-item:last-child{border-bottom:0}
.accordion-title{
  display:flex;align-items:center;gap:14px;
  padding:20px 24px;color:var(--c-text);
  font-size:17px;font-weight:600;line-height:1.6;
}
.accordion-title:hover{background:#FBF8FF;color:var(--c-primary)}
.accordion-title .faq-num{
  flex:0 0 auto;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--c-accent);font-variant-numeric:tabular-nums;
}
.accordion-title .faq-q{flex:1 1 auto}
.accordion-title .faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid rgba(122,59,240,.4);position:relative;
}
.accordion-title .faq-icon::before,
.accordion-title .faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--c-primary);
  transform:translate(-50%,-50%);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.accordion-title .faq-icon::before{width:10px;height:2px}
.accordion-title .faq-icon::after{width:2px;height:10px}
.accordion-item.is-open .faq-icon{background:rgba(122,59,240,.12)}
.accordion-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.accordion-content{display:none;padding:0 24px 22px 60px;color:var(--c-text-2);font-size:15.5px}
.accordion-content p:last-child{margin-bottom:0}
.accordion-item.is-open .accordion-content{display:block}
.accordion-item.is-open .accordion-title{color:var(--c-primary)}

/* ============ 术语卡片 ============ */
.term-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.term-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-l);padding:24px;
  aspect-ratio:1/1;display:flex;flex-direction:column;justify-content:center;
  box-shadow:var(--shadow-soft);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.term-card:hover{transform:translateY(-4px);border-color:rgba(122,59,240,.45);box-shadow:var(--shadow-mid)}
.term-card .term-idx{
  font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--c-warm);
  margin-bottom:12px;font-variant-numeric:tabular-nums;
}
.term-card h3{font-size:20px;margin-bottom:10px}
.term-card p{font-size:14.5px;color:var(--c-text-2);line-height:1.85;margin:0}

/* ============ 表单区 ============ */
.ask-wrap{display:grid;grid-template-columns:1fr 1.15fr;gap:0;border-radius:22px;overflow:hidden;box-shadow:var(--shadow-mid);background:#fff}
.ask-visual{
  position:relative;min-height:420px;background:var(--c-ink-1);
}
.ask-visual img{width:100%;height:100%;object-fit:cover;border-radius:0;opacity:.9}
.ask-visual .vis-caption{
  position:absolute;left:24px;right:24px;bottom:24px;color:#fff;
}
.ask-visual .vis-caption strong{display:block;font-size:18px;font-weight:700;margin-bottom:6px}
.ask-visual .vis-caption span{font-size:13.5px;color:rgba(255,255,255,.78)}
.ask-form{padding:40px 40px 36px}
.ask-form h2{font-size:26px;margin-bottom:10px}
.ask-form .form-intro{color:var(--c-text-2);font-size:15px;margin-bottom:26px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--c-text)}
.field input,.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--radius-s);
  border:1px solid var(--c-line);background:#FCFBF9;
  font-size:15px;line-height:1.6;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{min-height:110px;resize:vertical}
.field input:hover,.field textarea:hover{border-color:#CFC7DC}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(122,59,240,.12);
}
.field .hint{font-size:13px;color:var(--c-text-2);margin-top:6px}
.field.has-error input,.field.has-error textarea{border-color:var(--c-warm);box-shadow:0 0 0 4px rgba(255,178,63,.16)}
.field .err{display:none;font-size:13px;color:#A96A00;margin-top:6px}
.field.has-error .err{display:block}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:24px}
.form-note{font-size:13px;color:var(--c-text-2)}
.form-msg{
  display:none;margin-top:18px;padding:14px 18px;border-radius:var(--radius-s);
  background:rgba(35,211,164,.12);border:1px solid rgba(35,211,164,.4);
  color:#0E7A5D;font-size:14.5px;
}
.form-msg.show{display:block}

/* ============ 交叉内链 ============ */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cross-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-l);padding:26px;color:var(--c-text);
  box-shadow:var(--shadow-soft);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.cross-card:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:var(--shadow-mid);color:var(--c-text)}
.cross-card .chip{margin-bottom:14px}
.cross-card h3{font-size:20px;margin-bottom:10px}
.cross-card p{font-size:14.5px;color:var(--c-text-2);margin:0}
.cross-card .go{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:14px;font-weight:600;color:var(--c-primary);
}
.cross-card:hover .go{color:var(--c-accent)}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--c-ink-2);
  background-image:linear-gradient(120deg,rgba(122,59,240,.28),rgba(255,46,116,.12));
  border-radius:22px;padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  color:#fff;box-shadow:var(--shadow-dark);
}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:8px}
.cta-band p{margin:0;font-size:14.5px;color:rgba(255,255,255,.76)}
.cta-band .btn-primary{background:#fff;color:var(--c-primary);box-shadow:none}
.cta-band .btn-primary:hover{background:var(--c-warm);color:#3A2600;transform:translateY(-2px)}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink-1);color:rgba(255,255,255,.72);padding:var(--sp-8) 0 28px;margin-top:var(--sp-9)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
.footer-desc{font-size:14px;color:rgba(255,255,255,.6);margin:0;line-height:1.85}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.66)}
.footer-list a:hover{color:var(--c-warm)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:var(--c-warm)}

/* ============ 移动端吸底 CTA ============ */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:var(--c-ink-2);border-top:1px solid var(--c-line-d);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:12px;
}
.sticky-cta .sc-text{font-size:13.5px;color:rgba(255,255,255,.78)}
.sticky-cta .sc-text b{display:block;color:#fff;font-size:14.5px}
.sticky-cta .sc-actions{display:flex;align-items:center;gap:12px}
.sticky-cta a.sc-link{font-size:13.5px;color:rgba(255,255,255,.7)}
.sticky-cta a.sc-link:hover{color:var(--c-warm)}

/* ============ 动效 ============ */
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
.reveal-up{animation:fadeUp .5s ease both}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .term-grid{grid-template-columns:repeat(3,1fr)}
  .cross-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1023px){
  .nav-group,.nav-wrap>.btn{display:none}
  .nav-toggle{display:block}
  .nav-wrap{height:66px}
  .section{padding:64px 0}
  .term-grid{grid-template-columns:repeat(2,1fr)}
  .cross-grid{grid-template-columns:1fr}
  .ask-wrap{grid-template-columns:1fr}
  .ask-visual{min-height:240px}
  .ask-form{padding:32px 28px 30px}
  .hero{padding:64px 0 72px}
  .cta-band{padding:32px 28px}
}
@media (max-width:639px){
  body{font-size:16px}
  .wrap,.wrap-narrow{padding:0 18px}
  .section{padding:56px 0}
  .hero{padding:52px 0 60px}
  .hero h1{font-size:27px}
  .hero-sub{font-size:15.5px}
  .hero-meta{gap:10px 18px}
  .accordion-title{padding:16px 18px;font-size:15.5px;gap:10px;align-items:flex-start}
  .accordion-title .faq-icon{margin-top:2px}
  .accordion-content{padding:0 18px 18px 18px;font-size:15px}
  .term-grid{grid-template-columns:1fr;gap:16px}
  .term-card{aspect-ratio:auto;padding:22px}
  .ask-form{padding:26px 20px 24px}
  .cta-band{border-radius:18px;padding:26px 20px}
  .cta-band h2{font-size:21px}
  .footer-bottom{flex-direction:column;gap:10px}
  .sticky-cta{display:flex}
  .site-footer{padding-bottom:96px}
  .cross-card{padding:22px}
}