/* roulang page: index */
:root{
  --brand:#6C4CF1;
  --brand-600:#5A3BDD;
  --brand-100:#EDE8FE;
  --mint:#1FC4A0;
  --mint-100:#E2F7F1;
  --amber:#FF8A3D;
  --ink:#191527;
  --ink-2:#4E4A5C;
  --ink-3:#8A8695;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --night:#17122B;
  --night-2:#221B3C;
  --line:#E4E0DA;
  --line-dark:rgba(255,255,255,.12);
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(25,21,39,.04), 0 8px 24px rgba(25,21,39,.06);
  --sh-2:0 12px 32px rgba(108,76,241,.16);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-600);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container-x{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.eyebrow{
  display:inline-block;
  font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;
  background:var(--brand-100);border-radius:var(--r-s);
  padding:6px 12px;
}
.sec{padding:88px 0;}
.sec-tight{padding:64px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35;}
.sec-head p{color:var(--ink-2);font-size:15px;max-width:620px;margin-top:10px;}
.link-arrow{font-size:15px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.link-arrow span{transition:transform .2s ease;display:inline-block;}
.link-arrow:hover span{transform:translateX(3px);}

/* ---------- 导航 ---------- */
.site-nav{
  position:sticky;top:0;z-index:1040;
  height:68px;
  background:rgba(246,244,240,.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-nav.is-scrolled{box-shadow:0 6px 20px rgba(25,21,39,.07);}
.nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(140deg,var(--brand) 0%,#8E74FF 55%,var(--mint) 130%);
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px;
  box-shadow:0 6px 16px rgba(108,76,241,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:15.5px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.brand-text small{font-size:11px;color:var(--ink-3);letter-spacing:.14em;}
.nav-main{display:flex;align-items:center;gap:6px;}
.nav-main a{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;font-weight:600;color:var(--ink-2);
  border-radius:var(--r-s);
}
.nav-main a::after{
  content:"";position:absolute;left:20%;right:20%;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:center;
  transition:transform .2s ease;
}
.nav-main a:hover{color:var(--brand);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.active{color:var(--brand);}
.nav-main a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-search-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-2);display:grid;place-items:center;
  transition:all .2s ease;
}
.nav-search-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-100);}
.nav-ghost{font-size:15px;font-weight:600;color:var(--ink-2);}
.nav-ghost:hover{color:var(--brand);}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  border:none;transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
  box-shadow:0 6px 18px rgba(108,76,241,.22);
}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-brand:active{transform:translateY(0);}
.btn-brand.lg{height:54px;padding:0 30px;font-size:16px;}
.btn-outline-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  background:transparent;border:1px solid var(--ink);color:var(--ink);
  font-size:15px;font-weight:600;transition:all .2s ease;
}
.btn-outline-line:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-100);}
.btn-invert{background:#fff;color:var(--brand);box-shadow:none;}
.btn-invert:hover{background:#fff;color:var(--brand-600);}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);display:none;place-items:center;color:var(--ink-2);
}
.search-panel{display:none;padding:0 0 18px;}
.search-panel.open{display:block;}
.search-panel form{display:flex;gap:10px;}
.search-panel input{
  flex:1;height:48px;border-radius:var(--r-m);border:1px solid var(--line);
  padding:0 16px;font-size:15px;background:var(--surface);color:var(--ink);
}
.search-panel input::placeholder{color:var(--ink-3);}
.search-panel input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.2);outline:none;}
.offcanvas{background:var(--paper);}
.offcanvas-header{border-bottom:1px solid var(--line);}
.mobile-nav a{
  display:block;font-size:18px;font-weight:600;color:var(--ink);
  line-height:56px;border-bottom:1px solid var(--line);
}
.mobile-nav a.active{color:var(--brand);}
.offcanvas-body .btn-brand{width:100%;margin-top:24px;}

/* ---------- Hero ---------- */
.hero{padding:calc(68px + 60px) 0 88px;}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;}
.hero h1{font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:800;letter-spacing:-.01em;margin:20px 0 18px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:18px;color:var(--ink-2);line-height:1.8;max-width:520px;}
.hero-cta{display:flex;gap:14px;margin:32px 0 0;flex-wrap:wrap;}
.hero-stats{display:flex;gap:32px;margin-top:40px;flex-wrap:wrap;}
.hero-stats .num{font-family:var(--font-num);font-size:26px;font-weight:800;color:var(--ink);line-height:1.2;}
.hero-stats .lbl{font-size:13px;color:var(--ink-3);margin-top:4px;}
.hero-visual{position:relative;}
.hero-visual > img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-l);border:1px solid rgba(25,21,39,.06);
  box-shadow:var(--sh-1);
}
.float-card{
  position:absolute;background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);border-radius:var(--r-m);
  border:1px solid var(--line);padding:14px 16px;box-shadow:var(--sh-1);
  min-width:158px;
}
.float-card .fc-top{font-size:12px;color:var(--ink-3);letter-spacing:.04em;}
.float-card .fc-main{font-family:var(--font-num);font-size:17px;font-weight:800;color:var(--ink);margin-top:2px;}
.float-card .fc-bot{font-size:12px;color:var(--mint);font-weight:600;margin-top:2px;}
.fc-left{top:18px;left:-16px;}
.fc-right{bottom:20px;right:-16px;}

/* ---------- 主张条 ---------- */
.claim{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.claim-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center;padding:56px 0;}
.claim h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.45;}
.claim-list li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;font-size:15.5px;color:var(--ink-2);}
.claim-list li::before{
  content:"";width:10px;height:10px;border-radius:3px;background:var(--mint);
  flex-shrink:0;margin-top:11px;
}

/* ---------- 故事 ---------- */
.story-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.story-img{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);}
.story-img img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .2s ease;}
.story-img:hover img{transform:scale(1.03);}
.story-copy p{color:var(--ink-2);font-size:16px;line-height:1.85;margin-top:16px;max-width:760px;}
.timeline{margin-top:32px;border-left:2px solid var(--brand);padding-left:24px;display:grid;gap:20px;}
.timeline li{position:relative;}
.timeline .tl-num{font-family:var(--font-num);font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.06em;}
.timeline .tl-title{font-size:16.5px;font-weight:700;margin-top:2px;}
.timeline .tl-desc{font-size:14.5px;color:var(--ink-3);margin-top:4px;}

/* ---------- 精选卡 ---------- */
.pick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.pick-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;
}
.pick-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.pick-card .thumb{overflow:hidden;}
.pick-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .2s ease;}
.pick-card:hover .thumb img{transform:scale(1.03);}
.pick-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.pick-card.wide{grid-column:span 2;}
.pick-card.wide .thumb img{aspect-ratio:16/9;}
.pick-card.text-only{
  background:linear-gradient(150deg,var(--night-2) 0%,#2A2150 60%,#3A2C74 100%);
  border-color:transparent;color:#fff;justify-content:space-between;
}
.pick-card.text-only h3{color:#fff;}
.pick-card.text-only p{color:rgba(255,255,255,.72);}
.badge-cat{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:4px 10px;border-radius:var(--r-s);
  background:var(--brand-100);color:var(--brand);align-self:flex-start;
}
.badge-cat.mint{background:var(--mint-100);color:#0E8C72;}
.badge-cat.on-dark{background:rgba(255,255,255,.14);color:#fff;}
.pick-card h3{font-size:19px;font-weight:700;line-height:1.5;}
.pick-card p{font-size:15px;color:var(--ink-2);line-height:1.8;}
.pick-meta{
  margin-top:auto;font-size:13px;color:var(--ink-3);
  display:flex;align-items:center;gap:10px;font-family:var(--font-num);
}
.pick-meta .dot{width:1px;height:12px;background:var(--line);display:inline-block;}

/* ---------- 最新信息 ---------- */
.news{background:var(--surface);}
.chip-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none;}
.chip-row::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;font-size:14px;font-weight:600;color:var(--ink-2);
  padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--paper);white-space:nowrap;transition:all .2s ease;
}
.chip:hover{color:var(--brand);border-color:var(--brand);}
.chip.active{background:var(--brand);color:#fff;border-color:var(--brand);}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px;}
.news-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.news-card .thumb{overflow:hidden;background:linear-gradient(135deg,var(--brand-100),var(--paper));}
.news-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .2s ease;}
.news-card:hover .thumb img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{font-size:18px;font-weight:700;line-height:1.5;}
.news-body h3 a{color:var(--ink);}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{font-size:15px;color:var(--ink-2);line-height:1.8;}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-m);padding:48px;
  text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
  margin-top:32px;
}
.empty-state .ico{
  width:56px;height:56px;border-radius:50%;background:var(--brand-100);
  color:var(--brand);display:grid;place-items:center;font-size:22px;
}
.empty-state p{font-size:14px;color:var(--ink-3);}

/* ---------- 信任背书 ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.trust-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:28px 24px;box-shadow:var(--sh-1);}
.trust-item .t-num{font-family:var(--font-num);font-size:32px;font-weight:800;color:var(--brand);line-height:1.15;}
.trust-item .t-name{font-size:15px;font-weight:700;margin-top:10px;}
.trust-item .t-desc{font-size:13px;color:var(--ink-3);margin-top:6px;line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line);
}
.accordion-item:first-child{border-top:1px solid var(--line);}
.accordion-button{
  background:transparent;box-shadow:none;padding:20px 20px 20px 0;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.accordion-button:not(.collapsed){background:var(--brand-100);border-radius:var(--r-m);color:var(--brand);padding-left:20px;}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{display:none;}
.accordion-button .marker{
  margin-left:auto;width:22px;height:22px;flex-shrink:0;position:relative;
}
.accordion-button .marker::before,
.accordion-button .marker::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.accordion-button .marker::before{left:0;top:10px;width:22px;height:2px;}
.accordion-button .marker::after{left:10px;top:0;width:2px;height:22px;}
.accordion-button:not(.collapsed) .marker::after{transform:scaleY(0);opacity:0;}
.accordion-body{
  padding:0 20px 20px;font-size:16px;color:var(--ink-2);line-height:1.85;max-width:760px;
}

/* ---------- CTA ---------- */
.cta-outer{padding:0 0 88px;}
.cta-box{
  background:var(--night);border-radius:var(--r-l);padding:64px 48px;
  color:#fff;position:relative;overflow:hidden;
  border:1px solid var(--line-dark);
}
.cta-box::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;
  border-radius:50%;background:radial-gradient(circle,rgba(108,76,241,.55),transparent 68%);
}
.cta-inner{position:relative;z-index:1;max-width:720px;}
.cta-box h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35;color:#fff;}
.cta-box p{color:rgba(255,255,255,.72);margin-top:14px;font-size:16px;}
.cta-form{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;}
.cta-form input{
  flex:1;min-width:220px;height:48px;border-radius:var(--r-m);
  border:1px solid var(--line-dark);background:rgba(255,255,255,.08);
  color:#fff;padding:0 16px;font-size:15px;
}
.cta-form input::placeholder{color:rgba(255,255,255,.5);}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.35);}
.cta-note{font-size:13px;color:rgba(255,255,255,.55);margin-top:16px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--night);color:rgba(255,255,255,.72);border-top:1px solid var(--line-dark);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .brand-text b{color:#fff;}
.footer-brand .brand-text small{color:rgba(255,255,255,.5);}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;max-width:280px;}
.qr-slot{
  width:96px;height:96px;border-radius:var(--r-m);border:1px dashed var(--line-dark);
  display:grid;place-items:center;font-size:12px;color:rgba(255,255,255,.45);
  margin-top:18px;text-align:center;line-height:1.5;
}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;transition:all .2s ease;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line-dark);padding:24px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.5);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--brand);color:#fff;border:none;display:grid;place-items:center;
  box-shadow:0 10px 24px rgba(108,76,241,.35);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:all .2s ease;z-index:1030;font-size:18px;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-600);}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .pick-grid{grid-template-columns:repeat(2,1fr);}
  .pick-card.wide{grid-column:span 2;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:992px){
  .nav-main,.nav-ghost,.nav-right .btn-brand{display:none;}
  .nav-toggle{display:grid;}
  .hero{padding:calc(60px + 48px) 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-sub{max-width:none;}
  .float-card{position:static;margin-top:16px;min-width:0;display:inline-block;}
  .fc-left,.fc-right{display:inline-block;}
  .hero-visual{display:flex;flex-direction:column;gap:12px;}
  .claim-grid{grid-template-columns:1fr;gap:28px;padding:48px 0;}
  .story-grid{grid-template-columns:1fr;gap:32px;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .sec{padding:64px 0;}
  .cta-box{padding:48px 28px;}
}
@media (max-width:768px){
  .container-x{padding:0 18px;}
  .sec{padding:48px 0;}
  .pick-grid,.news-grid{grid-template-columns:1fr;}
  .pick-card.wide{grid-column:span 1;}
  .hero-cta .btn-brand,.hero-cta .btn-outline-line{width:100%;}
  .hero-stats{gap:20px;}
  .trust-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-form input{min-width:0;}
  .cta-form .btn-brand{width:100%;}
  .faq-wrap{max-width:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .pick-card:hover,.news-card:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --brand:#6C4CF1;
  --brand-600:#5A3BDD;
  --brand-100:#EDE8FE;
  --mint:#1FC4A0;
  --mint-100:#E2F7F1;
  --amber:#FF8A3D;
  --ink:#191527;
  --ink-2:#4E4A5C;
  --ink-3:#8A8695;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --night:#17122B;
  --night-2:#221B3C;
  --line:#E4E0DA;
  --line-dark:rgba(255,255,255,.12);
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --r-pill:999px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Consolas,monospace;
  --sh-1:0 1px 2px rgba(25,21,39,.04),0 8px 24px rgba(25,21,39,.06);
  --sh-2:0 12px 32px rgba(108,76,241,.16);
  --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;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;text-underline-offset:3px;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease}
a:hover{color:var(--brand-600)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-0.01em}
p{margin:0 0 1.15em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container-x{max-width:1200px;margin:0 auto;padding:0 var(--sp-5)}
.num{font-family:var(--font-num)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,244,240,.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(25,21,39,.08)}
.header-inner{
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-5);
}
.header-left{display:flex;align-items:center;gap:var(--sp-6);min-width:0}
.header-right{display:flex;align-items:center;gap:var(--sp-3)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand) 0%,#8B6BFF 100%);
  color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(108,76,241,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:16px;font-weight:800;letter-spacing:-0.01em;white-space:nowrap}
.brand-text small{font-size:11.5px;color:var(--ink-3);letter-spacing:.04em;white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:var(--sp-5)}
.nav-main a{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-2);padding:6px 0;
}
.nav-main a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);border-radius:2px;transition:width .2s ease;
}
.nav-main a:hover{color:var(--brand)}
.nav-main a:hover::after{width:60%}
.nav-main a.active{color:var(--brand)}
.nav-main a.active::after{width:60%}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--surface);color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .2s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-100)}
.link-quiet{font-size:14.5px;font-weight:600;color:var(--ink-2)}
.link-quiet:hover{color:var(--brand)}
.search-panel{
  border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--sh-1);
  padding:var(--sp-4);min-width:320px;margin-top:8px;background:var(--surface);
}
.search-form{display:flex;gap:var(--sp-2)}
.search-input{
  height:48px;border-radius:var(--r-m);border:1px solid var(--line);
  padding:0 var(--sp-4);font-size:15px;width:100%;
}
.search-input::placeholder{color:var(--ink-3)}
.search-input:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.2);outline:none;
}
.search-hint{font-size:13px;color:var(--ink-3);margin:var(--sp-3) 0 0}
.menu-toggle{display:none}
.offcanvas.mobile-nav{background:var(--paper);width:84vw}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:var(--sp-4) var(--sp-5)}
.mobile-nav .offcanvas-body{padding:var(--sp-4) var(--sp-5) var(--sp-6)}
.mobile-nav .m-link{
  display:block;font-size:18px;font-weight:600;color:var(--ink-2);
  line-height:56px;border-bottom:1px solid var(--line);
}
.mobile-nav .m-link.active{color:var(--brand)}
.mobile-nav .m-cta{margin-top:var(--sp-5)}

/* ============ 按钮 ============ */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 var(--sp-5);border-radius:var(--r-pill);
  background:var(--brand);color:#fff;font-size:15.5px;font-weight:600;border:1px solid transparent;
}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-brand:active{transform:translateY(0)}
.btn-brand.btn-lg{height:54px;padding:0 var(--sp-6);font-size:16.5px}
.btn-brand.btn-sm{height:40px;padding:0 var(--sp-4);font-size:14.5px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 var(--sp-5);border-radius:var(--r-pill);
  background:transparent;border:1px solid var(--ink);color:var(--ink);
  font-size:15.5px;font-weight:600;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-100)}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 var(--sp-5);border-radius:var(--r-pill);
  background:transparent;border:1px solid var(--brand);color:var(--brand);
  font-size:15.5px;font-weight:600;
}
.btn-outline-brand:hover{background:var(--brand);color:#fff;transform:translateY(-2px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.link-arrow i{font-size:12px;transition:transform .2s ease}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-9) 0}
.section-tight{padding:var(--sp-7) 0}
.eyebrow{
  font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--brand);
  text-transform:uppercase;margin-bottom:var(--sp-3);
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sp-5);margin-bottom:var(--sp-7)}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35}
.section-head .sub{font-size:15px;color:var(--ink-3);margin:var(--sp-2) 0 0}
.badge-cat{
  display:inline-block;background:var(--brand-100);color:var(--brand);
  font-size:12px;font-weight:600;border-radius:var(--r-s);padding:4px 10px;letter-spacing:.02em;
}
.badge-mint{display:inline-block;background:var(--mint-100);color:#12866C;font-size:12px;font-weight:600;border-radius:var(--r-s);padding:4px 10px}
.badge-amber{display:inline-block;background:var(--amber);color:var(--ink);font-size:12px;font-weight:700;border-radius:var(--r-pill);padding:4px 10px}
.crumb{font-size:13px;color:var(--ink-3);padding-top:var(--sp-5)}
.crumb ol{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb li::after{content:"/";margin-left:6px;color:var(--line)}
.crumb li:last-child::after{content:""}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand);text-decoration:underline}
.crumb .current{color:var(--ink)}

/* ============ Hero ============ */
.cat-hero{padding:var(--sp-7) 0 var(--sp-8)}
.cat-hero h1{font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:800;margin-bottom:var(--sp-4)}
.cat-hero .lead{font-size:17.5px;color:var(--ink-2);max-width:30em;margin-bottom:var(--sp-5)}
.hero-meta{display:flex;flex-wrap:wrap;gap:var(--sp-5);margin-top:var(--sp-6)}
.hero-meta .item{min-width:96px}
.hero-meta .num{font-size:24px;font-weight:800;color:var(--ink);display:block;line-height:1.3}
.hero-meta .lbl{font-size:13px;color:var(--ink-3);letter-spacing:.02em}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;border-radius:var(--r-l);border:1px solid var(--line);
  box-shadow:var(--sh-1);aspect-ratio:16/10;object-fit:cover;
  background:linear-gradient(120deg,var(--brand-100),var(--paper));
}
.hero-float{
  position:absolute;background:rgba(255,255,255,.94);border:1px solid var(--line);
  border-radius:var(--r-m);padding:var(--sp-4);box-shadow:var(--sh-1);
  backdrop-filter:blur(8px);max-width:210px;
}
.hero-float.fl-a{left:-8px;top:var(--sp-5)}
.hero-float.fl-b{right:-6px;bottom:var(--sp-5)}
.hero-float .k{font-size:13px;color:var(--ink-3);display:block}
.hero-float .v{font-size:16px;font-weight:700;color:var(--ink)}
.hero-float .v .num{color:var(--brand)}

/* ============ 介绍区 ============ */
.intro-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:var(--sp-8);align-items:start}
.prose p{font-size:16.5px;line-height:1.85;color:var(--ink-2);margin-bottom:1.15em;max-width:760px}
.point-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:var(--sp-6);box-shadow:var(--sh-1)}
.point-list h3{font-size:19px;margin-bottom:var(--sp-4)}
.point-list li{
  display:flex;gap:var(--sp-3);align-items:flex-start;
  font-size:15px;line-height:1.8;color:var(--ink-2);padding:var(--sp-3) 0;border-bottom:1px solid var(--line);
}
.point-list li:last-child{border-bottom:none}
.point-list li::before{
  content:"";width:8px;height:8px;flex:0 0 8px;margin-top:9px;border-radius:2px;background:var(--mint);
}

/* ============ 卡片网格 ============ */
.card-grid .col{display:flex}
.soft-card{
  display:flex;flex-direction:column;width:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.soft-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DCD5F8}
.soft-card .thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:linear-gradient(120deg,var(--brand-100),var(--paper))}
.soft-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.soft-card:hover .thumb img{transform:scale(1.03)}
.soft-card .body{padding:var(--sp-5);display:flex;flex-direction:column;flex:1}
.soft-card h3{font-size:19px;line-height:1.5;margin:var(--sp-3) 0 var(--sp-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.soft-card p{font-size:15px;line-height:1.8;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:var(--sp-4)}
.soft-card .meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);font-size:13px;color:var(--ink-3)}

/* ============ 对照区 ============ */
.spec-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1)}
.spec-row{display:grid;grid-template-columns:260px 1fr;gap:var(--sp-5);padding:var(--sp-5) var(--sp-6);border-bottom:1px solid var(--line)}
.spec-row:last-child{border-bottom:none}
.spec-row:hover{background:#FAF8F5}
.spec-key{font-size:15.5px;font-weight:700;color:var(--ink);display:flex;align-items:center;gap:10px}
.spec-key i{color:var(--brand);font-size:14px;width:16px;text-align:center}
.spec-val{font-size:15.5px;line-height:1.8;color:var(--ink-2)}

/* ============ FAQ ============ */
.faq-acc .accordion-item{border:none;border-bottom:1px solid var(--line);background:transparent;border-radius:0}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-acc .accordion-button{
  background:transparent;color:var(--ink);font-size:17px;font-weight:600;
  padding:var(--sp-4) 0;min-height:60px;box-shadow:none;border-radius:var(--r-m);
}
.faq-acc .accordion-button:not(.collapsed){background:var(--brand-100);color:var(--brand);padding:var(--sp-4) var(--sp-5) var(--sp-3)}
.faq-acc .accordion-button:focus{box-shadow:0 0 0 3px rgba(108,76,241,.2);border-color:transparent}
.faq-acc .accordion-button::after{
  background-image:none;content:"+";font-size:22px;font-weight:400;color:var(--brand);
  display:flex;align-items:center;justify-content:center;width:24px;height:24px;line-height:1;
  transform:none;transition:transform .2s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";transform:none}
.faq-acc .accordion-body{padding:0 var(--sp-5) var(--sp-5);font-size:16px;line-height:1.85;color:var(--ink-2);background:var(--brand-100);border-radius:0 0 var(--r-m) var(--r-m)}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--paper);border:1px solid var(--brand);border-radius:var(--r-l);
  padding:var(--sp-8);display:grid;grid-template-columns:1.4fr auto;gap:var(--sp-6);align-items:center;
  box-shadow:0 1px 2px rgba(25,21,39,.04);
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);line-height:1.4;margin-bottom:var(--sp-3)}
.cta-band p{font-size:15.5px;color:var(--ink-2);margin:0;max-width:52em}

/* ============ 页脚 ============ */
.site-footer{background:var(--night);color:rgba(255,255,255,.72);border-top:1px solid var(--line-dark);padding:var(--sp-8) 0 var(--sp-5);margin-top:var(--sp-9)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--sp-7)}
.site-footer .brand{color:#fff}
.site-footer .brand-text b{color:#fff}
.site-footer .brand-text small{color:rgba(255,255,255,.55)}
.site-footer .brand-mark{background:linear-gradient(135deg,var(--brand) 0%,#8B6BFF 100%)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin:var(--sp-4) 0;max-width:26em}
.qr-slot{
  width:96px;height:96px;border:1px dashed var(--line-dark);border-radius:var(--r-m);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;line-height:1.6;color:rgba(255,255,255,.5);
}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:var(--sp-4)}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;display:inline-block;transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--sp-3);
  margin-top:var(--sp-7);padding-top:var(--sp-5);border-top:1px solid var(--line-dark);
  font-size:13px;color:rgba(255,255,255,.5);
}
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:var(--r-pill);
  background:var(--brand);color:#fff;border:none;display:none;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);cursor:pointer;z-index:1040;transition:background-color .2s ease,transform .2s ease;
}
.to-top.show{display:flex}
.to-top:hover{background:var(--brand-600);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:var(--sp-6)}
}
@media (max-width:991.98px){
  .nav-main{display:none}
  .menu-toggle{display:inline-flex}
  .link-quiet{display:none}
  .header-inner{height:60px}
  .cat-hero{padding:var(--sp-6) 0 var(--sp-7)}
  .intro-grid{grid-template-columns:1fr;gap:var(--sp-7)}
  .cta-band{grid-template-columns:1fr;padding:var(--sp-6)}
  .spec-row{grid-template-columns:200px 1fr;padding:var(--sp-4) var(--sp-5)}
  .hero-float.fl-a{left:8px;top:12px}
  .hero-float.fl-b{right:8px;bottom:12px}
}
@media (max-width:767.98px){
  :root{--sp-9:48px;--sp-8:40px}
  .container-x{padding:0 18px}
  .brand-text small{display:none}
  .btn-brand,.btn-ghost,.btn-outline-brand{width:100%}
  .hero-meta{gap:var(--sp-4)}
  .hero-meta .item{min-width:calc(50% - 12px)}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:var(--sp-6)}
  .spec-row{grid-template-columns:1fr;gap:6px}
  .spec-key{font-size:15px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-6)}
  .footer-brand{grid-column:1 / -1}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --brand:#6C4CF1;
  --brand-600:#5A3BDD;
  --brand-100:#EDE8FE;
  --mint:#1FC4A0;
  --mint-100:#E2F7F1;
  --amber:#FF8A3D;
  --ink:#191527;
  --ink-2:#4E4A5C;
  --ink-3:#8A8695;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --night:#17122B;
  --night-2:#221B3C;
  --line:#E4E0DA;
  --line-dark:rgba(255,255,255,.12);
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(25,21,39,.04),0 8px 24px rgba(25,21,39,.06);
  --sh-hover:0 12px 32px rgba(108,76,241,.16);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-sans);font-size:16.5px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-600)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0}
ul,ol{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(246,244,240,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(25,21,39,.08)}
.nav-inner{height:68px;display:flex;align-items:center;gap:20px}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#6C4CF1,#8C6BFF);color:#fff;font-weight:800;font-size:18px;box-shadow:0 6px 16px rgba(108,76,241,.32);flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-text small{font-size:11.5px;color:var(--ink-3);letter-spacing:.06em}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-main a{position:relative;display:inline-block;font-size:15px;font-weight:600;color:var(--ink-2);padding:10px 12px;text-decoration:none;transition:color .2s ease}
.nav-main a::after{content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;background:var(--brand);transform:translateX(-50%);transition:width .2s ease}
.nav-main a:hover{color:var(--brand)}
.nav-main a:hover::after{width:60%}
.nav-main a.active{color:var(--brand)}
.nav-main a.active::after{width:60%}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--ink-2);display:grid;place-items:center;cursor:pointer;transition:color .2s ease,border-color .2s ease,background .2s ease}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-100)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-m);background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;transition:border-color .2s ease,background .2s ease}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink)}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-100)}
.btn-brand{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-pill);background:var(--brand);color:#fff;font-size:15px;font-weight:600;border:0;text-decoration:none;cursor:pointer;transition:background .2s ease,transform .2s ease,box-shadow .2s ease,color .2s ease}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(108,76,241,.28)}
.btn-brand:active{transform:translateY(0);box-shadow:none}
.nav-cta{height:42px;padding:0 20px;font-size:14px}
.nav-search{border-top:1px solid var(--line);background:rgba(246,244,240,.98)}
.nav-search .container-x{padding-top:16px;padding-bottom:16px}
.search-form{display:flex;gap:12px}
.search-form input{flex:1;height:48px;border-radius:var(--r-m);border:1px solid var(--line);background:var(--surface);padding:0 16px;font-size:15px;color:var(--ink);font-family:inherit}
.search-form input::placeholder{color:var(--ink-3)}
.search-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.2)}
.drawer{--bs-offcanvas-width:84vw;--bs-offcanvas-bg:var(--paper);--bs-offcanvas-border-width:0;border-left:1px solid var(--line)}
.drawer .offcanvas-header{padding:16px 20px;border-bottom:1px solid var(--line);align-items:center}
.drawer .offcanvas-body{padding:20px;display:flex;flex-direction:column}
.drawer-close{width:44px;height:44px;border-radius:var(--r-m);border:1px solid var(--line);background:transparent;font-size:22px;line-height:1;color:var(--ink-2);cursor:pointer}
.drawer-close:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-100)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{font-size:18px;font-weight:600;color:var(--ink-2);line-height:56px;padding:0 6px;border-bottom:1px solid var(--line);text-decoration:none;transition:color .2s ease,padding-left .2s ease}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--brand);padding-left:12px}
.drawer-cta{margin-top:24px;width:100%}

/* ============ 阅读进度条 ============ */
.read-progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--brand),var(--mint));z-index:1060;transition:width .1s linear}

/* ============ 面包屑 ============ */
.page-head{padding:28px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);letter-spacing:.02em}
.crumbs a{color:var(--ink-3);text-decoration:none;transition:color .2s ease}
.crumbs a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.crumbs .sep{color:#C9C4BD}
.crumbs .current{color:var(--ink)}

/* ============ 文章主体 ============ */
.article-wrap{padding:24px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;max-width:760px;margin:0 auto}
.article-head{padding-bottom:26px;border-bottom:1px solid var(--line)}
.badge-cat{display:inline-block;background:var(--brand-100);color:var(--brand);font-size:12px;font-weight:700;padding:5px 11px;border-radius:var(--r-s);letter-spacing:.04em}
.article-title{margin-top:16px;font-size:clamp(28px,3.4vw,42px);line-height:1.28;font-weight:800;letter-spacing:-.01em;word-break:break-word}
.article-meta{margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);letter-spacing:.02em}
.article-meta .dot{width:1px;height:12px;background:var(--line);display:inline-block}
.article-meta b{color:var(--ink-2);font-weight:600}
.tag-list{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;padding:0}
.tag-list li a{display:inline-block;font-size:13px;font-weight:600;padding:5px 12px;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand);transition:background .2s ease,color .2s ease}
.tag-list li a:hover{background:var(--brand);color:#fff}
.article-cover{margin-top:32px;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);background:linear-gradient(135deg,var(--brand-100),var(--paper))}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* 正文排版 */
.article-body{padding-top:36px;font-size:16.5px;line-height:1.85;color:var(--ink-2);word-break:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.15em}
.article-body h2{font-size:clamp(21px,2.2vw,26px);line-height:1.4;font-weight:700;color:var(--ink);margin:2em 0 .85em;padding-left:14px;border-left:3px solid var(--brand);letter-spacing:-.01em;scroll-margin-top:90px}
.article-body h3{font-size:20px;line-height:1.5;font-weight:700;color:var(--ink);margin:1.7em 0 .6em;scroll-margin-top:90px}
.article-body h4{font-size:17px;line-height:1.55;font-weight:700;color:var(--ink);margin:1.5em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:1.4em}
.article-body li{margin-bottom:.5em;line-height:1.8}
.article-body li::marker{color:var(--brand);font-weight:700}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-600)}
.article-body strong{color:var(--ink);font-weight:700}
.article-body blockquote{margin:1.6em 0;padding:20px 24px;background:var(--paper);border-left:4px solid var(--brand);border-radius:0 var(--r-m) var(--r-m) 0;color:var(--ink-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-m);margin:1.6em auto 0}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body code{font-family:var(--font-num);background:var(--night-2);color:#5EE8C4;padding:2px 6px;border-radius:var(--r-s);font-size:.9em}
.article-body pre{background:var(--night-2);color:#E9E6F5;padding:18px 20px;border-radius:var(--r-m);overflow-x:auto;margin:1.6em 0}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th{background:var(--night-2);color:#fff;text-align:left;padding:12px 16px;font-weight:600}
.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--ink-2)}
.article-body tbody tr:nth-child(even){background:#FAF8F5}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

/* 空态 */
.empty-state{border:1px dashed var(--line);border-radius:var(--r-m);padding:48px 24px;text-align:center;background:var(--surface)}
.empty-icon{display:grid;place-items:center;width:56px;height:56px;margin:0 auto 16px;border-radius:50%;background:var(--brand-100);color:var(--brand);font-weight:800;font-size:22px}
.empty-state p{margin-bottom:12px;color:var(--ink-3);font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px;text-decoration:none;transition:color .2s ease}
.link-arrow::after{content:"→";transition:transform .2s ease}
.link-arrow:hover{color:var(--brand-600)}
.link-arrow:hover::after{transform:translateX(3px)}

/* 相关推荐 */
.related{margin-top:64px;padding-top:36px;border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.sec-head h2{font-size:22px;font-weight:700;letter-spacing:-.01em}
.related-grid{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
.rcard{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;box-shadow:var(--sh);color:inherit;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.rcard:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--brand);color:inherit}
.rcard-img{display:block;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,var(--brand-100),var(--paper))}
.rcard-img img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.rcard:hover .rcard-img img{transform:scale(1.03)}
.rcard-body{display:flex;flex-direction:column;gap:10px;padding:18px;flex:1}
.rcard-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:16px;font-weight:700;line-height:1.5;color:var(--ink)}
.rcard-meta{margin-top:auto;font-size:13px;color:var(--ink-3);letter-spacing:.02em}

/* 上一篇 / 下一篇 */
.post-nav{margin-top:48px;display:grid;grid-template-columns:1fr 1fr;gap:20px}
.post-nav-item{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:20px;box-shadow:var(--sh);color:inherit;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.post-nav-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--brand);color:inherit}
.post-nav-label{display:block;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--ink-3)}
.post-nav-title{display:block;margin-top:8px;font-size:16px;font-weight:700;line-height:1.5;color:var(--ink)}
.post-nav-item:hover .post-nav-title{color:var(--brand)}
.back-channel{margin-top:28px;text-align:center}

/* 侧栏 */
.article-side{display:none}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:20px;box-shadow:var(--sh)}
.side-card+.side-card{margin-top:20px}
.side-title{margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);font-size:14px;font-weight:800;letter-spacing:.02em}
.side-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px}
.side-list a{display:block;font-size:14px;line-height:1.6;color:var(--ink-2);text-decoration:none;transition:color .2s ease,transform .2s ease}
.side-list a:hover{color:var(--brand);transform:translateX(2px)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag-row a{display:inline-block;font-size:12.5px;font-weight:600;padding:5px 11px;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand);transition:background .2s ease,color .2s ease}
.tag-row a:hover{background:var(--brand);color:#fff}

/* 返回顶部 */
.to-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;border:0;background:var(--brand);color:#fff;display:grid;place-items:center;box-shadow:0 12px 28px rgba(108,76,241,.34);cursor:pointer;z-index:1040;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,background .2s ease,visibility .2s ease}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-600)}

/* ============ 页脚 ============ */
.site-footer{margin-top:0;background:var(--night);color:rgba(255,255,255,.72);padding-top:64px;border-top:1px solid var(--line-dark)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.site-footer .brand-text b{color:#fff}
.site-footer .brand-text small{color:rgba(255,255,255,.55)}
.footer-brand p{margin:16px 0 20px;max-width:300px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.qr-slot{width:96px;height:96px;border:1px dashed var(--line-dark);border-radius:var(--r-m);display:grid;place-items:center;text-align:center;font-size:12px;line-height:1.6;color:rgba(255,255,255,.5)}
.footer-col h4{margin-bottom:18px;font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-col a{display:inline-block;font-size:14px;color:rgba(255,255,255,.72);text-decoration:none;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:20px 0;border-top:1px solid var(--line-dark);font-size:13px;color:rgba(255,255,255,.5)}

/* ============ 断点 ============ */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;max-width:1108px}
  .article-side{display:block;position:sticky;top:100px;align-self:start}
}
@media (max-width:1199.98px){
  .article-layout{max-width:760px}
}
@media (max-width:991.98px){
  .nav-main{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav-inner{height:60px}
  .article-wrap{padding-bottom:64px}
}
@media (min-width:992px){
  .nav-toggle{display:none}
}
@media (max-width:768px){
  .container-x{padding:0 18px}
  .article-wrap{padding-bottom:48px}
  .post-nav{grid-template-columns:1fr}
  .related{margin-top:48px}
  .article-meta{gap:8px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:576px){
  .brand-text small{display:none}
  .brand-text b{font-size:15px}
  .search-form{flex-direction:column}
  .search-form .btn-brand{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand:#6C4CF1;
  --brand-600:#5A3BDD;
  --brand-100:#EDE8FE;
  --mint:#1FC4A0;
  --mint-100:#E2F7F1;
  --amber:#FF8A3D;
  --ink:#191527;
  --ink-2:#4E4A5C;
  --ink-3:#8A8695;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --night:#17122B;
  --night-2:#221B3C;
  --line:#E4E0DA;
  --line-dark:rgba(255,255,255,.12);
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(25,21,39,.04),0 8px 24px rgba(25,21,39,.06);
  --sh-h:0 12px 32px rgba(108,76,241,.16);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-600)}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:768px){
  .container-x{padding:0 18px}
  body{font-size:16px}
}
h1,h2,h3,h4{margin:0;line-height:1.35;color:var(--ink)}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(246,244,240,.9);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(25,21,39,.08)}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  flex-shrink:0;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--mint));
  color:#fff;
  font-size:18px;
  font-weight:800;
  display:grid;
  place-items:center;
  box-shadow:0 6px 16px rgba(108,76,241,.28);
}
.brand-text b{
  display:block;
  font-size:15.5px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:.01em;
  line-height:1.3;
}
.brand-text small{
  display:block;
  font-size:11.5px;
  color:var(--ink-3);
  letter-spacing:.08em;
  line-height:1.4;
}
.nav-main{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:6px;
}
.nav-main a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
  transition:color .2s ease;
}
.nav-main a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:60%;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.nav-main a:hover{color:var(--brand)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.active{color:var(--brand)}
.nav-main a.active::after{transform:scaleX(1)}
.header-actions{
  display:flex;
  align-items:center;
  gap:16px;
  margin-left:auto;
}
.search-toggle{
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:var(--surface);
  color:var(--ink-2);
  display:grid;place-items:center;
  cursor:pointer;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.search-toggle:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}
.link-sub{
  font-size:14px;
  font-weight:600;
  color:var(--ink-2);
}
.link-sub:hover{color:var(--brand)}
.btn-brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-h)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  border:1px solid var(--ink);
  background:transparent;
  color:var(--ink);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-100);transform:translateY(-2px)}
.btn-ghost-invert{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.42);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-ghost-invert:hover{background:rgba(255,255,255,.16);border-color:#fff;color:#fff;transform:translateY(-2px)}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
}
.text-link i{font-size:12px;transition:transform .2s ease}
.text-link:hover i{transform:translateX(3px)}
.hamburger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  background:var(--surface);
  color:var(--ink);
  cursor:pointer;
}
.search-panel{
  position:absolute;
  right:24px;
  top:calc(100% + 10px);
  width:340px;
  max-width:calc(100vw - 36px);
  padding:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  box-shadow:var(--sh);
  display:none;
}
.search-panel.is-open{display:block}
.search-panel form{display:flex;gap:8px}
.search-panel input{
  flex:1;
  height:48px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  font-size:15px;
  color:var(--ink);
  background:var(--paper);
}
.search-panel input::placeholder{color:var(--ink-3)}
.search-panel input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.2)}
.search-panel button{
  height:48px;
  padding:0 18px;
  border:0;
  border-radius:var(--r-m);
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
}
.search-panel button:hover{background:var(--brand-600)}
.search-panel .hint{
  margin:10px 0 0;
  font-size:13px;
  color:var(--ink-3);
}
.offcanvas{
  background:var(--paper);
  width:84vw !important;
  max-width:360px;
}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.offcanvas-body{padding:12px 20px 24px}
.drawer-nav a{
  display:block;
  font-size:18px;
  font-weight:600;
  color:var(--ink-2);
  padding:0 4px;
  line-height:56px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand)}
.drawer-cta{margin-top:24px}
.drawer-cta .btn-brand{width:100%}

/* ---------- hero ---------- */
.hero-full{
  position:relative;
  overflow:hidden;
  padding:88px 0 96px;
  background:var(--night);
  color:#fff;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  opacity:.42;
}
.hero-full::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(23,18,43,.94) 0%,rgba(34,27,60,.78) 52%,rgba(108,76,241,.42) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:900px}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--brand);
  background:var(--brand-100);
  border-radius:var(--r-s);
  padding:5px 12px;
  margin:0 0 18px;
}
.eyebrow.light{
  color:#fff;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.2);
}
.hero-title{
  font-size:clamp(30px,4vw,46px);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
  margin:0 0 18px;
}
.hero-sub{
  font-size:17px;
  line-height:1.8;
  color:rgba(255,255,255,.78);
  max-width:700px;
  margin:0 0 30px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:38px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:36px;
}
.hero-stats li{color:rgba(255,255,255,.72);font-size:13px;letter-spacing:.02em}
.hero-stats b{
  display:block;
  font-family:var(--font-num);
  font-size:30px;
  font-weight:800;
  color:#fff;
  line-height:1.2;
}

/* ---------- rail ---------- */
.rail-wrap{
  padding:64px 0 0;
}
.rail-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:24px;
}
.rail-head h2{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
}
.rail-head p{
  font-size:15px;
  color:var(--ink-3);
  margin:8px 0 0;
  max-width:560px;
}
.rail-nav{display:flex;gap:10px;flex-shrink:0}
.rail-btn{
  width:46px;height:46px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--ink);
  cursor:pointer;
  display:grid;place-items:center;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.rail-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateY(-2px)}
.rail-track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 4px 22px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail-track::-webkit-scrollbar{display:none}
.rail-card{
  position:relative;
  flex:0 0 268px;
  scroll-snap-align:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  box-shadow:var(--sh);
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.rail-card:hover{transform:translateY(-2px);box-shadow:var(--sh-h)}
.rail-pic{
  position:relative;
  aspect-ratio:3/4;
  overflow:hidden;
  background:linear-gradient(150deg,var(--brand-100),var(--paper));
}
.rail-pic img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .2s ease;
}
.rail-card:hover .rail-pic img{transform:scale(1.03)}
.rail-order{
  position:absolute;
  left:12px;top:12px;
  font-family:var(--font-num);
  font-size:12px;
  font-weight:700;
  color:var(--ink);
  background:var(--amber);
  border-radius:var(--r-pill);
  padding:3px 10px;
  letter-spacing:.04em;
}
.rail-heat{
  position:absolute;
  right:12px;top:12px;
  font-size:12px;
  font-weight:600;
  color:var(--mint);
  background:var(--mint-100);
  border-radius:var(--r-s);
  padding:4px 9px;
}
.rail-body{padding:18px 20px 20px}
.rail-body .tag{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-100);
  border-radius:var(--r-s);
  padding:4px 10px;
  margin-bottom:10px;
}
.rail-body h3{
  font-size:18px;
  font-weight:700;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rail-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin:0 0 16px;
}
.rail-progress{
  height:6px;
  border-radius:var(--r-pill);
  background:var(--paper);
  overflow:hidden;
}
.rail-progress span{
  display:block;
  height:100%;
  border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--brand),var(--mint));
}
.rail-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:10px;
  font-size:13px;
  color:var(--ink-3);
}
.rail-meta time{font-family:var(--font-num)}
.rail-meta a{font-size:13px;font-weight:600}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section.alt{background:var(--surface)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
  margin-bottom:14px;
}
.section-head p{font-size:15.5px;color:var(--ink-2);margin:0}
.lead-para{
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:760px;
}

/* ---------- two column lists ---------- */
.two-lists{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.list-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  box-shadow:var(--sh);
  padding:26px 26px 22px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.list-card:hover{transform:translateY(-2px);box-shadow:var(--sh-h)}
.list-card h3{
  font-size:20px;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:6px;
}
.list-card h3 i{
  width:30px;height:30px;
  border-radius:var(--r-s);
  background:var(--brand-100);
  color:var(--brand);
  font-size:14px;
  display:grid;place-items:center;
}
.list-card .cap{
  font-size:13px;
  color:var(--ink-3);
  letter-spacing:.02em;
  margin:0 0 14px;
}
.check-list li{
  position:relative;
  padding-left:20px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--ink-2);
  margin-bottom:12px;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:9px;height:9px;
  border-radius:2px;
  background:var(--mint);
}
.check-list li:last-child{margin-bottom:0}
.check-list li b{color:var(--ink);font-weight:700}

/* ---------- flow ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  position:relative;
}
.flow-step{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:26px 22px;
  box-shadow:var(--sh);
}
.flow-step::after{
  content:"";
  position:absolute;
  top:44px;
  right:-24px;
  width:24px;
  height:2px;
  background:linear-gradient(90deg,var(--brand),rgba(108,76,241,.2));
}
.flow-step:last-child::after{display:none}
.flow-num{
  width:36px;height:36px;
  border-radius:var(--r-pill);
  background:var(--brand);
  color:#fff;
  font-family:var(--font-num);
  font-size:15px;
  font-weight:700;
  display:grid;place-items:center;
  margin-bottom:14px;
}
.flow-step h3{font-size:18px;font-weight:700;margin-bottom:8px}
.flow-step p{font-size:15px;line-height:1.8;color:var(--ink-2);margin:0}

/* ---------- calendar ---------- */
.calendar-grid{
  display:grid;
  grid-template-columns:repeat(7,minmax(0,1fr));
  gap:12px;
}
.cal-day{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:16px 12px;
  text-align:center;
  transition:transform .2s ease,box-shadow .2s ease;
}
.cal-day:hover{transform:translateY(-2px);box-shadow:var(--sh)}
.cal-day .wd{
  font-size:13px;
  color:var(--ink-3);
  letter-spacing:.02em;
}
.cal-day .dt{
  font-family:var(--font-num);
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  margin:6px 0 8px;
}
.cal-day .mark{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  border-radius:var(--r-s);
  padding:3px 9px;
  color:var(--ink-3);
  background:var(--paper);
}
.cal-day.is-update{border-color:var(--brand);background:var(--brand-100)}
.cal-day.is-update .mark{color:#fff;background:var(--brand)}
.cal-note{
  margin-top:22px;
  font-size:14px;
  color:var(--ink-3);
}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:60px;
  padding:14px 0;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
}
.faq-q .ico{
  position:relative;
  width:20px;height:20px;
  flex-shrink:0;
}
.faq-q .ico::before,
.faq-q .ico::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-q .ico::before{left:9px;top:2px;width:2px;height:16px}
.faq-q .ico::after{top:9px;left:2px;width:16px;height:2px}
.faq-q[aria-expanded="true"]{color:var(--brand)}
.faq-q[aria-expanded="true"] .ico::before{transform:scaleY(0);opacity:0}
.faq-a{
  padding:0 0 20px;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:760px;
}
.faq-item.is-open{background:var(--brand-100);border-radius:var(--r-m);border-bottom-color:transparent;padding:0 20px;margin-bottom:8px}
.faq-item.is-open .faq-q{color:var(--brand)}

/* ---------- cta band ---------- */
.cta-band{padding:24px 0 88px}
.cta-card{
  border:1px solid var(--brand);
  border-radius:var(--r-l);
  background:var(--surface);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  box-shadow:var(--sh);
}
.cta-card h2{
  font-size:clamp(22px,2.2vw,28px);
  font-weight:700;
  margin-bottom:10px;
}
.cta-card p{
  font-size:15.5px;
  color:var(--ink-2);
  margin:0;
  max-width:620px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  background:var(--night);
  color:rgba(255,255,255,.72);
  border-top:1px solid var(--line-dark);
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .brand-text b{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.55)}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.72);
  margin:18px 0 18px;
  max-width:300px;
}
.qr-slot{
  width:120px;
  height:120px;
  border:1px dashed rgba(255,255,255,.28);
  border-radius:var(--r-m);
  display:grid;
  place-items:center;
  text-align:center;
  font-size:12.5px;
  color:rgba(255,255,255,.55);
  line-height:1.6;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
}
.footer-col li{margin-bottom:12px}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line-dark);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ---------- to top ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:48px;
  height:48px;
  border-radius:var(--r-pill);
  border:0;
  background:var(--brand);
  color:#fff;
  display:grid;
  place-items:center;
  cursor:pointer;
  box-shadow:0 10px 26px rgba(108,76,241,.34);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease,background .2s ease;
  z-index:1040;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-600)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .flow-step::after{display:none}
}
@media (max-width:991px){
  .nav-main,.link-sub{display:none}
  .hamburger{display:grid;place-items:center}
  .header-inner{min-height:60px;gap:14px}
  .hero-full{padding:64px 0 72px}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cta-card{padding:34px 28px}
}
@media (max-width:767px){
  .hero-stats{gap:24px}
  .hero-stats b{font-size:24px}
  .rain-track,.rail-track{gap:14px}
  .rail-card{flex:0 0 78vw}
  .two-lists{grid-template-columns:minmax(0,1fr)}
  .calendar-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:minmax(0,1fr)}
  .btn-brand,.btn-ghost,.btn-ghost-invert{width:100%}
  .cta-actions{width:100%}
  .hero-actions{width:100%}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .search-panel{right:18px;left:18px;width:auto}
  .cta-band{padding:16px 0 64px}
}
@media (max-width:575px){
  .cal-day{padding:12px 8px}
  .cal-day .dt{font-size:17px}
  .qr-slot{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .rail-card:hover,.btn-brand:hover,.btn-ghost:hover,.btn-ghost-invert:hover,.list-card:hover,.cal-day:hover{transform:none !important}
}