/* roulang page: index */
:root{
  --primary:#1657E0;
  --primary-dark:#0B2A6B;
  --primary-light:#E8F0FF;
  --accent:#12B5A5;
  --cta:#FF6A2B;
  --cta-dark:#E4551A;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --alt:#EDF2FA;
  --ink:#0B1524;
  --ink-2:#46586F;
  --ink-3:#8A97A8;
  --border:#E3E9F2;
  --line:#EEF2F8;
  --night:#0B1524;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 1px 2px rgba(16,32,64,.04), 0 8px 24px rgba(16,32,64,.06);
  --shadow-hover:0 12px 32px rgba(16,32,64,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,button{font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:768px){.container-x{padding-left:32px;padding-right:32px;}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--border);box-shadow:0 4px 18px rgba(16,32,64,.05);}
.nav-row{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;}
.main-nav{display:none;align-items:center;gap:4px;margin-left:8px;}
@media(min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;display:inline-block;padding:6px 12px;border-radius:8px;
  font-size:15px;color:var(--ink-2);transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--ink);background:var(--alt);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  display:none;align-items:center;gap:8px;
  width:280px;height:40px;padding:0 12px;
  background:var(--bg);border:1px solid var(--border);border-radius:10px;
  color:var(--ink-3);font-size:14px;transition:border-color .2s,box-shadow .2s,background .2s;
}
@media(min-width:1024px){.cmd-search{display:flex;}}
.cmd-search:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(22,87,224,.14);}
.cmd-search input{flex:1;border:none;background:transparent;outline:none;color:var(--ink);font-size:14px;}
.cmd-search kbd{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;color:var(--ink-3);
  border:1px solid var(--border);background:#fff;border-radius:5px;padding:1px 5px;line-height:1.5;
}
.icon-btn{
  width:40px;height:40px;border-radius:10px;display:none;align-items:center;justify-content:center;
  border:1px solid var(--border);background:#fff;color:var(--ink-2);transition:.2s;
}
@media(min-width:768px){.icon-btn{display:flex;}}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:11px;background:var(--cta);color:#fff;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
  box-shadow:0 6px 16px rgba(255,106,43,.24);
}
.btn-cta:hover{background:var(--cta-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,106,43,.30);}
.btn-cta:active{transform:translateY(0);}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:11px;background:#fff;border:1px solid var(--border);
  color:var(--ink);font-size:15px;font-weight:600;white-space:nowrap;transition:.2s;
}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);box-shadow:0 8px 20px rgba(16,32,64,.07);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;
}
.btn-ghost svg{transition:transform .2s ease;}
.btn-ghost:hover svg{transform:translateX(3px);}
.burger{
  display:flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--ink);
}
@media(min-width:1024px){.burger{display:none;}}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(340px,86vw);background:#fff;z-index:80;
  transform:translateX(100%);transition:transform .28s ease;
  box-shadow:-12px 0 40px rgba(16,32,64,.14);
  padding:20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,21,36,.42);z-index:70;opacity:0;pointer-events:none;transition:opacity .28s;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer-title{font-size:12px;color:var(--ink-3);letter-spacing:.06em;}
.drawer a.drawer-link{
  display:block;padding:11px 12px;border-radius:10px;font-size:15px;color:var(--ink-2);
}
.drawer a.drawer-link:hover{background:var(--alt);color:var(--ink);}
.drawer a.drawer-link.active{background:var(--primary-light);color:var(--primary);font-weight:600;}

/* ============ hero ============ */
.hero{padding:40px 0 56px;}
@media(min-width:1024px){.hero{padding:56px 0 80px;}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;gap:48px;}}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}
.hero h1{
  margin-top:18px;font-size:clamp(30px,4.4vw,50px);font-weight:700;line-height:1.2;letter-spacing:-.01em;
}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.8;color:var(--ink-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.trust-row{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
.trust-item strong{display:block;font-size:24px;font-weight:700;color:var(--primary-dark);}
.trust-item span{font-size:13px;color:var(--ink-3);}
.hero-media{position:relative;display:flex;justify-content:center;}
.device-card{
  position:relative;width:100%;max-width:300px;aspect-ratio:9/16;border-radius:24px;overflow:hidden;
  border:1px solid var(--border);background:var(--alt);
  box-shadow:0 18px 46px rgba(16,32,64,.14);
}
@media(min-width:1280px){.device-card{max-width:340px;}}
.device-notch{
  position:absolute;top:10px;left:50%;transform:translateX(-50%);z-index:5;
  width:56px;height:6px;border-radius:999px;background:rgba(255,255,255,.75);
}
.device-notch::after{
  content:"";position:absolute;right:-14px;top:1px;width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.75);
}
.device-bg,.device-cover{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.device-bg{opacity:.85;}
.device-cover{background:linear-gradient(180deg,rgba(11,42,107,.05),rgba(11,21,36,.55));}
.device-fade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,21,36,0) 40%,rgba(11,21,36,.62) 100%);}
.play-btn{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:6;
  width:64px;height:64px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 28px rgba(16,32,64,.28);transition:transform .22s ease;
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);}
.play-btn svg{margin-left:3px;}
.live-tag{
  position:absolute;top:14px;right:14px;z-index:6;
  padding:4px 10px;border-radius:999px;background:rgba(18,181,165,.92);color:#fff;font-size:12px;font-weight:600;
}
.progress{position:absolute;left:14px;right:14px;bottom:14px;height:4px;border-radius:999px;background:rgba(255,255,255,.34);z-index:6;overflow:hidden;}
.progress i{display:block;height:100%;width:62%;background:var(--primary);border-radius:999px;}
.float-card{
  position:absolute;left:-26px;bottom:52px;z-index:7;background:#fff;border:1px solid var(--border);
  border-radius:14px;padding:12px 16px;box-shadow:var(--shadow);display:none;
}
@media(min-width:1024px){.float-card{display:block;}}
.float-card .row{display:flex;align-items:baseline;gap:8px;}
.float-card .row+.row{margin-top:6px;}
.float-card b{font-size:17px;color:var(--primary-dark);}
.float-card span{font-size:12px;color:var(--ink-3);}

/* ============ sections ============ */
.section{padding:56px 0;}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--alt);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.sec-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;}
.sec-head p{margin-top:8px;font-size:15px;color:var(--ink-2);max-width:640px;}
.eyebrow{font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.04em;margin-bottom:10px;display:block;}

/* 横向滚动片段 */
.hscroll{display:flex;gap:20px;overflow-x:auto;padding:6px 2px 18px;scroll-snap-type:x mandatory;}
.hscroll::-webkit-scrollbar{height:6px;}
.hscroll::-webkit-scrollbar-thumb{background:#D5DEEB;border-radius:999px;}
.clip-card{
  flex:0 0 236px;scroll-snap-align:start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.clip-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.clip-thumb{position:relative;aspect-ratio:9/16;overflow:hidden;background:var(--alt);}
.clip-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.clip-card:hover .clip-thumb img{transform:scale(1.03);}
.clip-dur{position:absolute;top:10px;right:10px;padding:2px 8px;border-radius:6px;background:rgba(11,21,36,.72);color:#fff;font-size:12px;}
.clip-body{padding:14px;}
.clip-body h3{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clip-meta{margin-top:8px;font-size:13px;color:var(--ink-3);display:flex;gap:8px;align-items:center;}
.clip-more{
  flex:0 0 236px;display:flex;align-items:center;justify-content:center;border:1px dashed var(--border);
  border-radius:var(--radius);color:var(--primary);font-weight:600;background:#fff;min-height:220px;transition:.2s;
}
.clip-more:hover{border-color:var(--primary);background:var(--primary-light);}

/* 步骤清单 */
.step-list{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.step-item{display:flex;gap:18px;align-items:center;padding:20px 22px;transition:background .2s ease;}
.step-item+.step-item{border-top:1px solid var(--line);}
.step-item:hover{background:var(--bg);}
.step-no{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:28px;font-weight:700;color:#C9D6EA;min-width:44px;}
.step-thumb{width:112px;height:76px;border-radius:10px;overflow:hidden;flex-shrink:0;background:var(--alt);display:none;}
@media(min-width:640px){.step-thumb{display:block;}}
.step-thumb img{width:100%;height:100%;object-fit:cover;}
.step-body h3{font-size:17px;font-weight:600;}
.step-body p{margin-top:6px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:12px;
  border:1px solid var(--border);color:var(--ink-2);background:#fff;
}
.tag-accent{background:rgba(18,181,165,.10);border-color:rgba(18,181,165,.28);color:#0E8E82;}
.tag-primary{background:var(--primary-light);border-color:rgba(22,87,224,.20);color:var(--primary);}

/* 能力区 */
.cap-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:1024px){.cap-grid{grid-template-columns:7fr 5fr;gap:32px;}}
.cap-visual{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--border);background:var(--alt);min-height:300px;}
.cap-visual img{width:100%;height:100%;object-fit:cover;min-height:300px;}
.cap-visual .cap-caption{
  position:absolute;left:20px;right:20px;bottom:20px;background:rgba(255,255,255,.92);border-radius:14px;padding:16px 18px;
  border:1px solid var(--border);
}
.cap-caption h3{font-size:17px;}
.cap-caption p{margin-top:6px;font-size:14px;color:var(--ink-2);}
.cap-list{display:flex;flex-direction:column;gap:14px;}
.cap-item{padding:18px 20px;border-radius:14px;border:1px solid var(--border);background:#fff;transition:.2s;}
.cap-item:nth-child(odd){background:var(--alt);}
.cap-item:hover{box-shadow:var(--shadow);transform:translateY(-2px);}
.cap-item .idx{
  display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;
  background:var(--primary);color:#fff;font-size:13px;font-weight:700;margin-bottom:10px;
}
.cap-item h3{font-size:16px;}
.cap-item p{margin-top:6px;font-size:14px;color:var(--ink-2);line-height:1.7;}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:1024px){.news-grid{grid-template-columns:6fr 6fr;gap:24px;}}
.news-feature{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:.22s;
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.news-feature .cover{aspect-ratio:16/9;overflow:hidden;background:var(--alt);}
.news-feature .cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s;}
.news-feature:hover .cover img{transform:scale(1.03);}
.news-feature .body{padding:22px;}
.news-feature h3{margin-top:12px;font-size:21px;line-height:1.45;}
.news-feature p{margin-top:10px;font-size:15px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-feature .meta{margin-top:14px;font-size:13px;color:var(--ink-3);display:flex;gap:14px;}
.news-side{display:flex;flex-direction:column;gap:12px;}
.news-row{
  display:block;background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px 20px;transition:.2s;
}
.news-row:hover{background:var(--bg);border-color:#D3DEEE;}
.news-row h3{font-size:16px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.news-row p{margin-top:8px;font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-row .meta{margin-top:10px;font-size:13px;color:var(--ink-3);display:flex;gap:12px;align-items:center;}
.empty-state{
  text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--border);border-radius:var(--radius);
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state .ring{
  width:52px;height:52px;border-radius:50%;background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary);
}
.empty-state p{font-size:15px;color:var(--ink-2);}

/* 评价 */
.review-card{
  flex:0 0 280px;scroll-snap-align:start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;
}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;}
.review-top .name{font-size:15px;font-weight:600;}
.stars{margin-left:auto;color:var(--accent);font-size:13px;letter-spacing:1px;}
.review-card p{margin-top:14px;font-size:14px;color:var(--ink-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;transition:border-color .2s;}
.faq-item[open]{border-color:rgba(22,87,224,.42);box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:17px 20px;font-size:16px;font-weight:600;display:flex;align-items:center;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .bar{width:3px;height:18px;border-radius:2px;background:transparent;flex-shrink:0;transition:background .2s;}
.faq-item[open] summary .bar{background:var(--primary);}
.faq-item summary .plus{margin-left:auto;color:var(--ink-3);font-size:20px;line-height:1;transition:transform .2s;}
.faq-item[open] summary .plus{transform:rotate(45deg);color:var(--primary);}
.faq-answer{padding:0 20px 20px 35px;font-size:15px;color:var(--ink-2);line-height:1.8;}

/* CTA */
.cta-band{
  background:var(--primary-dark);border-radius:24px;padding:36px 28px;color:#fff;
  display:flex;flex-direction:column;gap:22px;align-items:flex-start;
}
@media(min-width:768px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:44px 48px;}}
.cta-band h2{font-size:clamp(22px,3vw,30px);}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.78);max-width:620px;}
.cta-band .btn-cta{padding:13px 26px;font-size:16px;}
@media(max-width:767px){.cta-band .btn-cta{width:100%;}}
.cta-note{margin-top:12px;font-size:12px;color:var(--ink-3);}

/* footer */
.site-footer{background:var(--night);color:#A8B6C7;margin-top:40px;padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.4fr;gap:36px;}}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer p{font-size:14px;line-height:1.8;color:#A8B6C7;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:#A8B6C7;transition:color .2s;}
.footer-links a:hover{color:#fff;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);}
.footer-brand span{color:#fff;font-weight:700;font-size:17px;}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-direction:column;gap:10px;font-size:13px;color:#7C8CA0;
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}
.age-note{font-size:12px;color:#8A97A8;}

/* 移动吸底 */
.mobile-dock{
  position:fixed;left:0;right:0;bottom:0;z-index:60;height:56px;background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);border-top:1px solid var(--border);display:flex;align-items:center;gap:10px;padding:0 14px;
}
@media(min-width:1024px){.mobile-dock{display:none;}}
.mobile-dock .btn-cta{flex:1;padding:11px 16px;}
.mobile-dock .btn-outline{padding:11px 16px;}
@media(max-width:1023px){body{padding-bottom:60px;}}

/* roulang page: category1 */
:root{
    --primary:#1657E0;
    --primary-dark:#0B2A6B;
    --primary-soft:#E8F0FF;
    --accent:#12B5A5;
    --accent-soft:#E4F7F5;
    --cta:#FF6A2B;
    --cta-dark:#E85A1D;
    --bg:#F6F8FB;
    --surface:#FFFFFF;
    --surface-alt:#EDF2FA;
    --ink:#0B1524;
    --ink-2:#46586F;
    --ink-3:#8A97A8;
    --line:#E3E9F2;
    --line-soft:#EEF2F8;
    --footer-bg:#0B1524;
    --r-card:16px;
    --r-btn:12px;
    --r-pill:999px;
    --shadow-1:0 1px 2px rgba(16,32,64,.04),0 8px 24px rgba(16,32,64,.06);
    --shadow-2:0 12px 32px rgba(16,32,64,.10);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink);
    background:var(--bg);
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  button{border:0;background:none;cursor:pointer}
  h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:0}
  h3{font-size:17px;font-weight:600}
  p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  summary{list-style:none;cursor:pointer}
  summary::-webkit-details-marker{display:none}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
  .num{font-variant-numeric:tabular-nums;font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container-x{padding:0 32px}}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.86);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:box-shadow .22s ease,border-color .22s ease;
  }
  .site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(16,32,64,.07)}
  .header-inner{display:flex;align-items:center;gap:18px;height:64px}
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
    background:var(--primary);color:#fff;font-size:12px;font-weight:800;letter-spacing:.5px;
    box-shadow:0 6px 14px rgba(22,87,224,.28);
  }
  .brand-text{font-size:16px;font-weight:800;color:var(--ink);white-space:nowrap}
  .brand-text em{font-style:normal;color:var(--primary)}
  .main-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
  .nav-link{
    position:relative;padding:9px 12px;border-radius:10px;font-size:15px;color:var(--ink-2);
    transition:color .18s ease,background-color .18s ease;white-space:nowrap;
  }
  .nav-link:hover{color:var(--ink);background:var(--surface-alt)}
  .nav-link.active{color:var(--primary);font-weight:600}
  .nav-link.active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
    border-radius:2px;background:var(--primary);
  }
  .header-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
  .command-search{
    display:flex;align-items:center;gap:8px;width:280px;height:40px;padding:0 10px 0 12px;
    border:1px solid var(--line);border-radius:10px;background:var(--surface);
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .command-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,87,224,.16)}
  .command-search svg{flex-shrink:0;color:var(--ink-3)}
  .command-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
  .command-search input::placeholder{color:var(--ink-3)}
  .command-search kbd{
    flex-shrink:0;font-size:11px;color:var(--ink-3);border:1px solid var(--line);
    border-radius:6px;padding:1px 5px;background:var(--surface-alt);font-family:inherit;
  }
  .icon-btn{
    display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);
    border-radius:10px;background:var(--surface);color:var(--ink-2);
    transition:color .18s ease,border-color .18s ease,transform .18s ease;
  }
  .icon-btn:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-1px)}
  .menu-toggle{
    display:none;place-items:center;width:40px;height:40px;border:1px solid var(--line);
    border-radius:10px;background:var(--surface);color:var(--ink);
  }
  .menu-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
  .menu-toggle span::before,.menu-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
  }
  .menu-toggle span::before{top:-6px}
  .menu-toggle span::after{top:6px}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 18px;
    border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;
    cursor:pointer;white-space:nowrap;transition:background-color .18s ease,color .18s ease,
    border-color .18s ease,box-shadow .18s ease,transform .18s ease;
  }
  .btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(22,87,224,.22)}
  .btn-primary:hover{background:#0F46BB;transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-cta{background:var(--cta);color:#fff;box-shadow:0 8px 18px rgba(255,106,43,.26)}
  .btn-cta:hover{background:var(--cta-dark);transform:translateY(-1px)}
  .btn-cta:active{transform:translateY(0)}
  .btn-outline{background:var(--surface);border-color:var(--line);color:var(--ink)}
  .btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
  .btn-ghost{background:transparent;color:var(--primary);padding:0 4px;height:auto}
  .btn-ghost .arrow{display:inline-block;transition:transform .18s ease}
  .btn-ghost:hover .arrow{transform:translateX(3px)}
  .btn.full{width:100%}

  /* ---------- Drawer ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(11,21,36,.42);z-index:70;
    opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
  }
  .drawer-mask.open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;z-index:80;
    transform:translateX(102%);transition:transform .28s ease;padding:20px;
    display:flex;flex-direction:column;gap:18px;overflow-y:auto;
  }
  .drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between}
  .drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-2);font-size:18px}
  .drawer-group-title{font-size:12px;color:var(--ink-3);letter-spacing:.4px;margin-bottom:8px}
  .drawer-link{
    display:block;padding:12px 14px;border-radius:12px;font-size:15px;color:var(--ink-2);
    border:1px solid transparent;
  }
  .drawer-link:hover{background:var(--surface-alt);color:var(--ink)}
  .drawer-link.active{background:var(--primary-soft);color:var(--primary);font-weight:600;border-color:#CFE0FF}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;border:1px solid var(--line);
    border-radius:10px;background:var(--surface-alt);
  }
  .drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px}

  /* ---------- Hero banner ---------- */
  .page-hero{padding:28px 0 0}
  .hero-banner{
    display:grid;grid-template-columns:1.12fr .88fr;gap:28px;align-items:center;
    background:var(--surface);border:1px solid var(--line);border-radius:20px;
    padding:26px 28px;box-shadow:var(--shadow-1);overflow:hidden;
  }
  .hero-banner-copy .eyebrow{
    display:inline-block;font-size:12px;font-weight:600;color:var(--primary);
    background:var(--primary-soft);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:12px;
  }
  .hero-banner h1{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.3}
  .hero-banner-copy p{color:var(--ink-2);font-size:15px;line-height:1.8;margin-top:12px;max-width:560px}
  .hero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:20px}
  .hero-banner-media{position:relative;height:100%;min-height:200px;max-height:240px;border-radius:16px;overflow:hidden;background:var(--primary-soft)}
  .hero-banner-media img{width:100%;height:100%;object-fit:cover}
  .hero-banner-media::after{content:"";position:absolute;inset:0;background:rgba(11,42,107,.16)}

  /* ---------- Filter pills ---------- */
  .filter-bar{margin-top:22px;background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .filter-inner{
    display:flex;align-items:center;gap:10px;padding-top:14px;padding-bottom:14px;
    overflow-x:auto;scrollbar-width:none;
  }
  .filter-inner::-webkit-scrollbar{display:none}
  .pill{
    display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 15px;border-radius:var(--r-pill);
    border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:13.5px;
    white-space:nowrap;transition:color .18s ease,border-color .18s ease,background-color .18s ease;
  }
  .pill:hover{color:var(--primary);border-color:var(--primary)}
  .pill.active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}

  /* ---------- Sections ---------- */
  .section{padding:52px 0}
  .section-alt{background:var(--surface-alt)}
  @media (min-width:1024px){.section{padding:84px 0}}
  .section-head{max-width:720px;margin-bottom:30px}
  .section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700}
  .section-head p{color:var(--ink-2);font-size:15px;line-height:1.8;margin-top:10px}
  .section-head.center{margin-left:auto;margin-right:auto;text-align:center}

  .layout-main-side{display:grid;grid-template-columns:1fr;gap:24px}
  @media (min-width:1024px){.layout-main-side{grid-template-columns:minmax(0,1fr) 316px;gap:28px}}

  /* ---------- Entry cards ---------- */
  .entry-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:640px){.entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  .entry-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D2DEF3}
  .card-media{position:relative;overflow:hidden;background:var(--primary-soft)}
  .ratio-16-9{aspect-ratio:16/9}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
  .entry-card:hover .card-media img{transform:scale(1.03)}
  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
    font-size:12px;font-weight:600;border:1px solid transparent;
  }
  .tag-accent{background:var(--accent-soft);color:#0C7F74;border-color:#BFEAE4}
  .tag-primary{background:var(--primary-soft);color:var(--primary);border-color:#CFE0FF}
  .tag-grey{background:var(--surface-alt);color:var(--ink-2);border-color:var(--line)}
  .card-media .tag{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.94);border-color:transparent}
  .card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card-body h3{font-size:17px;font-weight:600}
  .card-body p{color:var(--ink-2);font-size:14.5px;line-height:1.75;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .card-meta{display:flex;align-items:center;gap:8px;color:var(--ink-3);font-size:12.5px;margin-top:auto}

  /* ---------- Side panel ---------- */
  .side-panel{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px;box-shadow:var(--shadow-1);height:fit-content;
  }
  @media (min-width:1024px){.side-panel{position:sticky;top:86px}}
  .side-title{font-size:16px;font-weight:700;padding-bottom:12px;border-bottom:1px solid var(--line-soft)}
  .rank-list{margin-top:6px}
  .rank-list li{display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-bottom:1px solid var(--line-soft)}
  .rank-list li:last-child{border-bottom:0}
  .rank-no{
    flex-shrink:0;width:28px;font-size:16px;font-weight:700;color:#C3D2E8;
    font-variant-numeric:tabular-nums;line-height:1.5;
  }
  .rank-list p{font-size:14.5px;font-weight:600;color:var(--ink)}
  .rank-list span{display:block;font-size:12.5px;color:var(--ink-3);line-height:1.6}
  .side-panel .btn{margin-top:16px}

  /* ---------- Scene cards ---------- */
  .scene-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:768px){.scene-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
  .scene-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;
  }
  .scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
  .scene-card .ratio-4-3{aspect-ratio:4/3;overflow:hidden;background:var(--primary-soft)}
  .scene-card img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
  .scene-card:hover img{transform:scale(1.03)}
  .scene-body{padding:18px}
  .scene-body h3{font-size:16.5px;font-weight:600}
  .scene-body p{color:var(--ink-2);font-size:14.5px;line-height:1.75;margin-top:8px}

  /* ---------- Flow ---------- */
  .flow-grid{display:grid;grid-template-columns:1fr;gap:16px;counter-reset:flow}
  @media (min-width:768px){.flow-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
  @media (min-width:1024px){.flow-grid{grid-template-columns:repeat(5,minmax(0,1fr))}}
  .flow-step{
    position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px 18px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .flow-step:hover{border-color:#CFE0FF;transform:translateY(-2px);box-shadow:var(--shadow-1)}
  .flow-step .step-no{
    display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
    border-radius:10px;background:var(--primary-soft);color:var(--primary);font-weight:700;font-size:14px;
    font-variant-numeric:tabular-nums;margin-bottom:12px;
  }
  .flow-step h3{font-size:15.5px;font-weight:600}
  .flow-step p{color:var(--ink-2);font-size:14px;line-height:1.7;margin-top:8px}

  /* ---------- Stats ---------- */
  .stats-band{
    background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px;
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;
  }
  @media (min-width:768px){.stats-band{grid-template-columns:repeat(4,minmax(0,1fr));padding:30px 34px}}
  .stat-item .stat-num{
    font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--primary);
    font-variant-numeric:tabular-nums;line-height:1.2;
  }
  .stat-item .stat-num small{font-size:14px;font-weight:600;color:var(--ink-2);margin-left:4px}
  .stat-item .stat-label{font-size:13px;color:var(--ink-3);margin-top:6px}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
  .faq-item{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
    overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item[open]{border-color:#CFE0FF;box-shadow:var(--shadow-1)}
  .faq-item summary{
    position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;padding:14px 18px 14px 20px;font-size:15.5px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::before{
    content:"";position:absolute;left:0;top:12px;bottom:12px;width:0;border-radius:3px;
    background:var(--primary);transition:width .2s ease;
  }
  .faq-item[open] summary::before{width:3px}
  .faq-item summary::after{
    content:"+";flex-shrink:0;font-size:20px;font-weight:400;color:var(--ink-3);line-height:1;
    transition:transform .2s ease,color .2s ease;
  }
  .faq-item[open] summary::after{content:"−";color:var(--primary)}
  .faq-item summary:hover{color:var(--primary)}
  .faq-body{padding:0 20px 20px 20px}
  .faq-body p{color:var(--ink-2);font-size:15px;line-height:1.85}

  /* ---------- CTA band ---------- */
  .cta-band{
    background:var(--primary-dark);border-radius:24px;padding:34px 28px;
    display:flex;flex-direction:column;gap:22px;align-items:flex-start;
  }
  @media (min-width:768px){
    .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:40px 44px}
  }
  .cta-band h2{color:#fff;font-size:clamp(20px,2.4vw,26px)}
  .cta-band p{color:#B9C7DC;font-size:15px;line-height:1.8;margin-top:10px;max-width:620px}
  .cta-band .cta-actions{display:flex;flex-direction:column;gap:12px;width:100%}
  @media (min-width:768px){.cta-band .cta-actions{flex-direction:row;width:auto}}
  @media (max-width:767px){.cta-band .btn{width:100%}}
  .cta-note{color:var(--ink-3);font-size:12px;margin-top:16px;text-align:center}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--footer-bg);color:#A8B6C7;margin-top:56px;padding:48px 0 22px}
  @media (min-width:1024px){.site-footer{margin-top:84px;padding:60px 0 26px}}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
  @media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px}}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:14px}
  .footer-brand .brand-mark{width:32px;height:32px;font-size:11px;box-shadow:none}
  .site-footer p{font-size:14px;line-height:1.8;color:#93A3B8}
  .site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{font-size:14px;color:#A8B6C7;transition:color .18s ease}
  .footer-links a:hover{color:#fff}
  .age-note{color:#8A97A8 !important;font-size:12px !important}
  .footer-bottom{
    margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.10);
    display:flex;flex-direction:column;gap:8px;font-size:12.5px;color:#7C8CA1;
  }
  @media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

  /* ---------- Mobile sticky bar ---------- */
  .mobile-bar{
    position:fixed;left:0;right:0;bottom:0;height:56px;z-index:60;background:rgba(255,255,255,.96);
    border-top:1px solid var(--line);display:none;align-items:center;gap:12px;padding:0 16px;
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  }
  .mobile-bar .btn{height:40px;font-size:14.5px}
  .mobile-bar .btn-primary{flex-shrink:0}
  .mobile-bar .btn-outline{flex:1}
  @media (max-width:767px){
    .mobile-bar{display:flex}
    body{padding-bottom:56px}
  }

  @media (max-width:1023px){
    .main-nav{display:none}
    .command-search{display:none}
    .menu-toggle{display:grid}
  }
  @media (max-width:767px){
    .header-tools .btn-primary{display:none}
    .icon-btn{display:none}
    .hero-banner{grid-template-columns:1fr;padding:22px 20px;gap:20px}
    .hero-banner-media{min-height:170px;max-height:200px;order:-1}
    .hero-actions{gap:12px}
  }
  @media (max-width:520px){
    .brand-text{font-size:15px}
    .section{padding:44px 0}
    .stats-band{padding:22px;gap:18px}
    .entry-card .card-body{padding:16px}
  }

/* roulang page: article */
:root{
  --primary:#1657E0;
  --primary-600:#1247B8;
  --primary-dark:#0B2A6B;
  --primary-light:#E8F0FF;
  --accent:#12B5A5;
  --cta:#FF6A2B;
  --cta-dark:#E8551A;
  --bg:#F6F8FB;
  --bg-alt:#EDF2FA;
  --card:#FFFFFF;
  --dark:#0B1524;
  --text:#0B1524;
  --text-2:#46586F;
  --text-3:#8A97A8;
  --border:#E3E9F2;
  --line:#EEF2F8;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.04),0 8px 24px rgba(16,32,64,.06);
  --shadow-hover:0 12px 32px rgba(16,32,64,.10);
  --container:1200px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
input{font:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0}
.container-x{max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--border);box-shadow:0 6px 20px rgba(16,32,64,.06)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--dark);white-space:nowrap}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--primary);color:#fff;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.04em;
}
.brand-text{letter-spacing:.01em}
.main-nav{display:none;align-items:center;gap:2px;margin-left:6px}
@media(min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;
  color:var(--text-2);font-size:15px;font-weight:500;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(22,87,224,.06)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;
}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.command-search{
  display:none;align-items:center;gap:8px;
  width:290px;height:40px;padding:0 12px;
  background:#fff;border:1px solid var(--border);border-radius:10px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.command-search i{color:var(--text-3);font-size:13px}
.command-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;color:var(--text)}
.command-search input::placeholder{color:var(--text-3)}
.command-search kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--text-3);
  border:1px solid var(--border);border-radius:6px;padding:1px 5px;background:var(--bg);
}
.command-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,87,224,.15)}
@media(min-width:1180px){.command-search{display:flex}}
.icon-btn{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--border);background:#fff;color:var(--text-2);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-light)}
@media(min-width:768px){.icon-btn{display:inline-flex}}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 18px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-blue{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(22,87,224,.22)}
.btn-blue:hover{background:var(--primary-600);transform:translateY(-1px)}
.btn-orange{background:var(--cta);color:#fff;box-shadow:0 8px 20px rgba(255,106,43,.24)}
.btn-orange:hover{background:var(--cta-dark);transform:translateY(-1px)}
.btn-secondary{background:#fff;color:var(--primary);border-color:var(--border)}
.btn-secondary:hover{border-color:var(--primary);background:var(--primary-light)}
.hamburger{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:0 10px;background:#fff;
  border:1px solid var(--border);border-radius:10px;cursor:pointer;
}
.hamburger span{display:block;height:2px;border-radius:2px;background:var(--text)}
@media(min-width:1024px){.hamburger{display:none}}
@media(max-width:420px){
  .brand-text{font-size:14px}
  .icon-btn{display:none}
}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;z-index:55;background:rgba(11,21,36,.42);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:60;
  width:min(320px,86vw);padding:20px;overflow-y:auto;background:#fff;
  box-shadow:-12px 0 32px rgba(16,32,64,.12);
  transform:translateX(100%);transition:transform .28s ease;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--border);
  background:#fff;color:var(--text-2);cursor:pointer;
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary)}
.drawer-search{display:flex;width:100%;margin-bottom:22px}
.drawer-group{font-size:12px;color:var(--text-3);letter-spacing:.06em;margin-bottom:8px}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:22px}
.drawer-nav a{
  padding:12px 12px;border-radius:10px;font-size:15px;color:var(--text-2);
  transition:background .2s ease,color .2s ease;
}
.drawer-nav a:hover{background:var(--primary-light);color:var(--primary)}
.drawer-nav a.active{color:var(--primary);font-weight:600;background:var(--primary-light)}
.drawer-cta{width:100%}

/* ============ 文章头 ============ */
.article-hero{padding:26px 0 6px}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--border)}
.breadcrumb .current{
  max-width:min(52vw,420px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-3);
}
.hero-panel{
  position:relative;margin-top:18px;padding:30px 24px;border-radius:20px;overflow:hidden;
  border:1px solid var(--border);
  background:
    linear-gradient(rgba(255,255,255,.94),rgba(255,255,255,.94)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
@media(min-width:768px){.hero-panel{padding:40px 40px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--primary);
  background:var(--primary-light);border-radius:999px;padding:4px 12px;
}
.article-title{
  font-size:clamp(26px,3.6vw,38px);line-height:1.28;font-weight:700;
  color:var(--dark);margin:16px 0 0;letter-spacing:-.01em;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:18px;font-size:13px;color:var(--text-3)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--border);display:inline-block}

/* ============ 文章布局 ============ */
.article-body{padding:36px 0 8px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px}
@media(min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:48px}}
.article-main{max-width:760px;min-width:0}
.article-side{display:none}
@media(min-width:1024px){.article-side{display:block}}
.side-sticky{position:sticky;top:88px;display:flex;flex-direction:column;gap:16px}
.side-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-sm);
}
.side-title{
  display:flex;align-items:center;gap:8px;
  font-size:14px;font-weight:700;color:var(--text);margin-bottom:12px;
}
.side-title i{color:var(--primary);font-size:13px}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:calc(100vh - 260px);overflow:auto}
.toc-link{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;line-height:1.5;
  color:var(--text-2);border-left:2px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.toc-link:hover{color:var(--primary);background:var(--primary-light)}
.toc-link.active{color:var(--primary);font-weight:600;background:var(--primary-light);border-left-color:var(--primary)}
.hot-list{display:flex;flex-direction:column;gap:12px}
.hot-item{display:flex;gap:10px;align-items:flex-start}
.hot-num{
  flex:0 0 22px;height:22px;border-radius:7px;background:var(--bg-alt);color:var(--primary);
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
}
.hot-item a{font-size:14px;line-height:1.55;color:var(--text-2);transition:color .2s ease}
.hot-item a:hover{color:var(--primary)}

/* ============ 正文排版 ============ */
.prose-article{font-size:16px;line-height:1.85;color:var(--text);word-break:break-word}
.prose-article>*:first-child{margin-top:0}
.prose-article p{margin:0 0 1.3em}
.prose-article h2{
  position:relative;font-size:25px;line-height:1.35;font-weight:700;color:var(--dark);
  margin:2em 0 .8em;padding-left:14px;
}
.prose-article h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:2px;background:var(--primary);
}
.prose-article h3{font-size:19px;line-height:1.45;font-weight:700;color:var(--dark);margin:1.7em 0 .6em}
.prose-article h4{font-size:17px;font-weight:600;color:var(--dark);margin:1.5em 0 .5em}
.prose-article ul,.prose-article ol{padding-left:1.35em;margin:0 0 1.3em}
.prose-article li{margin:.45em 0}
.prose-article li::marker{color:var(--primary)}
.prose-article blockquote{
  margin:1.6em 0;padding:16px 20px;
  background:var(--primary-light);border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;color:var(--text-2);
}
.prose-article blockquote p:last-child{margin-bottom:0}
.prose-article img{border-radius:12px;margin:1.6em auto;height:auto}
.prose-article figure{margin:1.6em 0}
.prose-article figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.prose-article a{color:var(--primary);border-bottom:1px solid rgba(22,87,224,.35);transition:border-color .2s ease}
.prose-article a:hover{border-bottom-color:var(--primary)}
.prose-article strong{font-weight:700}
.prose-article table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;
  margin:1.5em 0;font-size:15px;
}
.prose-article th,.prose-article td{border:1px solid var(--border);padding:10px 14px;text-align:left;white-space:nowrap}
.prose-article th{background:var(--bg-alt);font-weight:600;color:var(--dark)}
.prose-article code{
  font-family:var(--font-mono);font-size:14px;background:var(--bg-alt);
  border-radius:6px;padding:2px 6px;
}
.prose-article pre{
  background:#F1F5FB;border:1px solid var(--border);border-radius:12px;
  padding:16px;overflow-x:auto;margin:1.5em 0;
}
.prose-article pre code{background:transparent;padding:0}
.prose-article hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;padding:64px 24px;background:var(--card);
  border:1px dashed var(--border);border-radius:var(--radius-card);
}
.empty-state i{font-size:30px;color:var(--text-3)}
.empty-state h2{font-size:20px;font-weight:700;color:var(--dark);margin:16px 0 8px}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:22px}

/* ============ 要点卡 ============ */
.key-points{margin-top:44px}
.key-points h2{font-size:20px;font-weight:700;color:var(--dark);margin-bottom:16px}
.point-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.point-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.point-grid{grid-template-columns:repeat(4,1fr)}}
.point-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px;transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.point-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(22,87,224,.25)}
.point-card .num{
  display:inline-block;font-family:var(--font-mono);font-size:12px;font-weight:700;
  color:var(--primary);background:var(--primary-light);border-radius:8px;padding:3px 9px;
}
.point-card h3{font-size:16px;font-weight:600;color:var(--dark);margin:12px 0 6px}
.point-card p{font-size:14px;line-height:1.7;color:var(--text-2)}

/* ============ 标签 / 上下篇 ============ */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  font-size:13px;color:var(--text-2);border:1px solid var(--border);border-radius:999px;
  padding:5px 14px;background:#fff;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-light)}
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}
@media(min-width:640px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;background:#fff;
  border:1px solid var(--border);border-radius:14px;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.post-nav a:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.post-nav .label{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-3)}
.post-nav .ttl{font-size:15px;font-weight:600;color:var(--text)}
.post-nav .next{align-items:flex-end;text-align:right}

/* ============ 板块通用 ============ */
.section{padding:52px 0}
@media(min-width:768px){.section{padding:72px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--dark);letter-spacing:-.01em}
.section-head .more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
  transition:gap .2s ease;
}
.section-head .more:hover{gap:10px}
.section-sub{font-size:14px;color:var(--text-2);margin-top:8px}

/* ============ 相关推荐 ============ */
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.card{
  display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(22,87,224,.22)}
.thumb{aspect-ratio:16/9;overflow:hidden;background:var(--primary-light)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .38s ease}
.card:hover .thumb img{transform:scale(1.04)}
.card-body{padding:18px}
.card-body .badge{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  color:#0E8E82;background:rgba(18,181,165,.12);border-radius:999px;padding:3px 10px;
}
.card-body h3{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--dark);margin:12px 0 8px}
.card-body p{font-size:14px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{
  display:flex;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--text-3);
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
}

/* ============ FAQ ============ */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(22,87,224,.35);box-shadow:var(--shadow-sm)}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 20px;font-size:16px;font-weight:600;color:var(--dark);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;line-height:1;color:var(--text-3);transition:color .2s ease;
}
.faq-item[open] summary::after{content:"−";color:var(--primary)}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--primary);border-radius:0 3px 3px 0;
}
.faq-body{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-body p{margin:0}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--primary-dark);border-radius:24px;padding:32px 24px;color:#fff;
  display:flex;flex-direction:column;gap:22px;
}
@media(min-width:900px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:40px 44px}
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;letter-spacing:-.01em}
.cta-band p{font-size:15px;color:rgba(255,255,255,.76);margin-top:10px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-note{font-size:12px;color:var(--text-3);margin-top:18px}

/* ============ Footer ============ */
.site-footer{background:var(--dark);color:#A8B6C7;margin-top:72px}
.site-footer .container-x{padding-top:56px;padding-bottom:26px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.site-footer p{font-size:14px;line-height:1.85;color:#A8B6C7}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin:0 0 14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#A8B6C7;transition:color .2s ease}
.footer-links a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#8A97A8;
}
.age-note{font-size:12px;color:#8A97A8}

@media(max-width:520px){
  .hero-panel{border-radius:16px}
  .card-body h3{font-size:16px}
  .cta-band{border-radius:18px;padding:26px 20px}
}

/* roulang page: category2 */
:root{
  --primary:#1657E0;
  --primary-deep:#0B2A6B;
  --primary-light:#E8F0FF;
  --accent:#12B5A5;
  --cta:#FF6A2B;
  --cta-deep:#E4571C;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --alt:#EDF2FA;
  --dark:#0B1524;
  --text:#0B1524;
  --muted:#46586F;
  --weak:#8A97A8;
  --border:#E3E9F2;
  --line:#EEF2F8;
  --r-card:16px;
  --r-media:20px;
  --r-btn:12px;
  --sh:0 1px 2px rgba(16,32,64,.04), 0 8px 24px rgba(16,32,64,.06);
  --sh-hover:0 12px 32px rgba(16,32,64,.10);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,Inter,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
.page-body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
.page-body img{max-width:100%;display:block;}
.page-body a{color:inherit;text-decoration:none;}
.page-body button{font-family:inherit;}
.page-body ul,.page-body ol{margin:0;padding:0;list-style:none;}
.page-body h1,.page-body h2,.page-body h3,.page-body h4,.page-body p{margin:0;}
.page-body :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container-x{padding:0 32px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--border);box-shadow:0 6px 20px rgba(16,32,64,.06);}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#fff;font-family:var(--font-num);font-size:12px;font-weight:700;letter-spacing:.5px;
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px;}
.main-nav .nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:9px;
  font-size:14.5px;color:var(--muted);transition:color .2s ease,background-color .2s ease;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav .nav-link:hover{color:var(--text);background:var(--line);}
.main-nav .nav-link.active{color:var(--primary);font-weight:600;}
.main-nav .nav-link.active::after{transform:scaleX(1);}
.header-right{display:flex;align-items:center;gap:10px;margin-left:auto;}
.command-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:290px;height:40px;padding:0 10px 0 12px;
  background:#fff;border:1px solid var(--border);border-radius:10px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.command-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,87,224,.16);}
.command-search i{color:var(--weak);font-size:13px;}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);font-family:inherit;
}
.command-search input::placeholder{color:var(--weak);}
.command-search kbd{
  font-family:var(--font-num);font-size:11px;color:var(--weak);
  border:1px solid var(--border);border-radius:6px;padding:1px 6px;background:var(--bg);
}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:#fff;color:var(--muted);transition:all .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:#C7D9FB;transform:translateY(-1px);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-cta{background:var(--cta);color:#fff;box-shadow:0 8px 18px rgba(255,106,43,.24);}
.btn-cta:hover{background:var(--cta-deep);transform:translateY(-1px);box-shadow:0 12px 24px rgba(255,106,43,.3);}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px rgba(22,87,224,.2);}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--border);}
.btn-ghost:hover{border-color:var(--primary);background:var(--primary-light);transform:translateY(-1px);}
.btn-sm{padding:9px 14px;font-size:14px;}
.header-cta{padding:10px 16px;font-size:14.5px;}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:#fff;color:var(--text);font-size:15px;
}
.mobile-drawer{
  display:none;position:absolute;top:64px;left:0;right:0;
  background:#fff;border-bottom:1px solid var(--border);
  box-shadow:0 18px 34px rgba(16,32,64,.10);padding:16px 20px 22px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer .group-title{font-size:12px;color:var(--weak);letter-spacing:.6px;margin:6px 0 10px;}
.mobile-drawer .drawer-link{
  display:block;padding:12px 12px;border-radius:10px;font-size:15px;color:var(--muted);
}
.mobile-drawer .drawer-link.active{background:var(--primary-light);color:var(--primary);font-weight:600;}
.mobile-drawer .drawer-link:hover{background:var(--line);color:var(--text);}
.mobile-drawer .drawer-search{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;margin:6px 0 14px;
  border:1px solid var(--border);border-radius:10px;background:var(--bg);
}
.mobile-drawer .drawer-search input{flex:1;border:0;background:transparent;outline:none;font-size:14px;font-family:inherit;}
.mobile-drawer .btn{width:100%;}

/* ---------- Section base ---------- */
.section{padding:56px 0;}
@media(min-width:768px){.section{padding:88px 0;}}
.section.alt{background:var(--alt);}
.section-head{max-width:760px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;color:var(--primary);
  background:var(--primary-light);border-radius:999px;padding:5px 12px;margin-bottom:14px;
}
.eyebrow i{font-size:11px;}
h2.section-title{font-size:clamp(23px,2.6vw,32px);font-weight:700;line-height:1.3;}
.section-sub{margin-top:12px;font-size:15.5px;color:var(--muted);line-height:1.85;}
.text-accent{color:var(--accent);}
.text-primary{color:var(--primary);}

/* ---------- Page head ---------- */
.page-head{padding:40px 0 12px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--weak);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span.sep{color:#C6D0DC;}
.head-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:start;}
@media(min-width:1024px){.head-grid{grid-template-columns:minmax(0,1fr) 320px;gap:36px;}}
h1.page-title{font-size:clamp(28px,4.2vw,46px);font-weight:700;line-height:1.22;letter-spacing:.2px;}
.page-lead{margin-top:16px;font-size:16.5px;line-height:1.9;color:var(--muted);max-width:700px;}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.info-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh);padding:20px 22px;
}
.info-card .info-title{font-size:13px;color:var(--weak);letter-spacing:.4px;margin-bottom:14px;}
.info-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:12px 0;border-top:1px solid var(--line);}
.info-row:first-of-type{border-top:0;padding-top:0;}
.info-row .num{font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;}
.info-row .num.accent{color:var(--accent);}
.info-row .label{font-size:13.5px;color:var(--muted);text-align:right;}

/* ---------- Tag cloud ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;border:1px solid var(--border);
  background:#fff;font-size:13.5px;color:var(--muted);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease,transform .2s ease;
}
.tag-pill:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light);transform:translateY(-1px);}
.tag-pill.is-on{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600;}

/* ---------- Mini cards ---------- */
.mini-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.mini-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.mini-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}}
.mini-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D5E1F5;}
.mini-media{position:relative;aspect-ratio:4/3;background:var(--primary-light);overflow:hidden;}
.mini-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.mini-card:hover .mini-media img{transform:scale(1.04);}
.corner-tag{
  position:absolute;top:10px;left:10px;
  background:rgba(11,42,107,.86);color:#fff;font-size:11.5px;font-weight:600;
  padding:4px 10px;border-radius:999px;letter-spacing:.3px;
}
.corner-tag.accent{background:rgba(18,181,165,.94);}
.mini-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.mini-body h3{font-size:16.5px;font-weight:600;line-height:1.45;}
.mini-body p{font-size:13.5px;color:var(--weak);line-height:1.7;}
.mini-meta{
  margin-top:auto;padding-top:10px;border-top:1px solid var(--line);
  font-family:var(--font-num);font-size:12.5px;color:var(--weak);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.media-fallback{position:relative;}
.media-fallback::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(135deg,var(--primary-light),#DCE8FF),
    repeating-linear-gradient(90deg,rgba(22,87,224,.08) 0 1px,transparent 1px 18px);
}

/* ---------- Steps ---------- */
.step-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media(min-width:640px){.step-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.step-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;}}
.step-item{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px 18px 22px;box-shadow:var(--sh);transition:transform .22s ease,box-shadow .22s ease;
}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.step-item::before{
  content:"";position:absolute;top:0;left:18px;right:18px;height:3px;border-radius:0 0 3px 3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.step-num{font-family:var(--font-num);font-size:22px;font-weight:700;color:#C9D8F0;letter-spacing:1px;}
.step-item h3{margin-top:6px;font-size:16px;font-weight:600;line-height:1.45;}
.step-item p{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.75;}

/* ---------- Safety split ---------- */
.split{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:1024px){.split{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;align-items:stretch;}}
.split-visual{
  position:relative;border-radius:var(--r-media);overflow:hidden;border:1px solid var(--border);
  min-height:280px;box-shadow:var(--sh);
}
.split-visual img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.split-visual .overlay{
  position:relative;z-index:2;height:100%;
  background:linear-gradient(180deg,rgba(11,42,107,.18) 0%,rgba(11,42,107,.86) 78%);
  padding:26px 24px;display:flex;flex-direction:column;justify-content:flex-end;gap:12px;color:#fff;
}
.split-visual h3{font-size:20px;font-weight:700;line-height:1.45;}
.split-visual p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.86);}
.split-visual .chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;
  padding:5px 11px;border-radius:999px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);color:#fff;
}
.chip.on-dark-accent{background:rgba(18,181,165,.24);border-color:rgba(18,181,165,.5);}
.safety-list{display:flex;flex-direction:column;gap:12px;}
.safety-item{
  display:flex;gap:14px;padding:16px 18px;border-radius:14px;border:1px solid var(--border);
  background:#fff;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.safety-item:nth-child(odd){background:var(--alt);}
.safety-item:hover{border-color:#C7D9FB;transform:translateY(-2px);box-shadow:var(--sh);}
.safety-item .idx{
  flex:0 0 30px;height:30px;border-radius:9px;background:var(--primary-light);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:13px;font-weight:700;
}
.safety-item h3{font-size:15.5px;font-weight:600;line-height:1.5;}
.safety-item p{margin-top:5px;font-size:13.5px;color:var(--muted);line-height:1.75;}

/* ---------- Scenes ---------- */
.scene-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.scene-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}}
.scene-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px 22px;
  box-shadow:var(--sh);transition:transform .22s ease,box-shadow .22s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.scene-ico{
  width:44px;height:44px;border-radius:13px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-light);color:var(--primary);font-size:17px;margin-bottom:14px;
}
.scene-card:nth-child(2) .scene-ico{background:rgba(18,181,165,.14);color:#0E9C8E;}
.scene-card:nth-child(3) .scene-ico{background:rgba(255,106,43,.14);color:var(--cta-deep);}
.scene-card h3{font-size:17px;font-weight:600;line-height:1.5;}
.scene-card p{margin-top:9px;font-size:14px;color:var(--muted);line-height:1.8;}
.scene-card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.scene-card ul li{position:relative;padding-left:16px;font-size:13.5px;color:var(--muted);}
.scene-card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--primary);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#CFDDF6;}
.faq-item[open]{border-color:#C7D9FB;box-shadow:var(--sh);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  min-height:56px;padding:14px 18px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";flex:0 0 3px;align-self:stretch;border-radius:3px;background:var(--border);transition:background-color .2s ease;
}
.faq-item[open] summary::before{background:var(--primary);}
.faq-item summary .faq-ico{margin-left:auto;color:var(--weak);font-size:13px;transition:transform .22s ease;}
.faq-item[open] summary .faq-ico{transform:rotate(180deg);color:var(--primary);}
.faq-answer{padding:0 22px 18px 35px;font-size:15px;line-height:1.85;color:var(--muted);}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--primary-deep);border-radius:24px;
  padding:30px 26px;display:grid;grid-template-columns:1fr;gap:20px;align-items:center;color:#fff;
}
@media(min-width:900px){.cta-band{grid-template-columns:minmax(0,1fr) auto;padding:34px 38px;gap:32px;}}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,181,165,.34),transparent 68%);
}
.cta-band h2{font-size:clamp(21px,2.3vw,27px);font-weight:700;line-height:1.35;position:relative;z-index:2;}
.cta-band p{margin-top:10px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.8);position:relative;z-index:2;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2;}
.cta-actions .btn{width:100%;}
@media(min-width:560px){.cta-actions .btn{width:auto;}}
.compliance-note{margin-top:16px;font-size:12px;color:var(--weak);line-height:1.7;}

/* ---------- Cross links ---------- */
.cross-links{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:26px;}
.cross-links .label{font-size:13.5px;color:var(--weak);}
.cross-pill{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;
  border:1px solid var(--border);background:#fff;font-size:14px;color:var(--muted);
  transition:all .2s ease;
}
.cross-pill:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);box-shadow:var(--sh);}
.cross-pill i{font-size:12px;color:var(--primary);}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:#A8B6C7;padding:56px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16.5px;font-weight:700;margin-bottom:14px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--accent),var(--primary));}
.site-footer p{font-size:14px;line-height:1.85;color:#A8B6C7;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:#A8B6C7;transition:color .2s ease,transform .2s ease;display:inline-block;}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.age-note{font-size:12px;color:var(--weak);}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--weak);
}

/* ---------- Mobile action bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;display:none;
  align-items:center;gap:10px;height:56px;padding:8px 14px;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--border);
}
.mobile-bar .btn{flex:1;padding:10px 12px;font-size:14px;}
@media(max-width:768px){
  .page-body{padding-bottom:56px;}
  .mobile-bar{display:flex;}
}
@media(max-width:1023px){
  .main-nav{display:none;}
  .command-search{display:none;}
  .icon-btn{display:none;}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-cta{display:none;}
}
@media(max-width:520px){
  .header-inner{gap:12px;}
  .brand-text{font-size:15px;}
  .head-actions .btn{width:100%;}
  .cta-band{border-radius:20px;padding:26px 20px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}