/* roulang page: index */
:root{
  --brand:#5B3DF5;
  --brand-2:#8A3BEA;
  --brand-3:#C13BE8;
  --grad:linear-gradient(120deg,#5B3DF5 0%,#8A3BEA 45%,#C13BE8 100%);
  --mint:#14C8B0;
  --mint-deep:#0FA695;
  --orange:#FF8A3D;
  --lemon:#F7D23E;
  --ink-900:#171232;
  --ink-600:#4A4566;
  --ink-400:#8A85A6;
  --bg:#F5F3FC;
  --bg-alt:#EDEAF9;
  --surface:#FFFFFF;
  --line:#E3DFF3;
  --dark-1:#171232;
  --dark-2:#2B1F5C;
  --r-xl:28px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:14px;
  --shadow-1:0 1px 2px rgba(23,18,50,.04),0 4px 16px rgba(23,18,50,.06);
  --shadow-2:0 8px 32px rgba(91,61,245,.12);
  --shadow-btn:0 12px 28px rgba(91,61,245,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1280px){.container{max-width:1280px}}
.section{padding:104px 0}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;flex-wrap:wrap}
.h2{font-size:clamp(26px,3vw,36px);line-height:1.22;font-weight:800;color:var(--ink-900);letter-spacing:-.015em}
.section-sub{margin-top:12px;font-size:15px;color:var(--ink-400);max-width:640px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);position:relative}
.text-link::after{content:"";position:absolute;left:0;right:24px;bottom:-3px;height:1.5px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s ease}
.text-link:hover::after{transform:scaleX(1)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform .24s ease,box-shadow .24s ease,background .24s ease,border-color .24s ease;
  white-space:nowrap;
}
.btn-primary{background-image:var(--grad);background-size:200% 100%;background-position:0 0;color:#fff;box-shadow:0 8px 20px rgba(91,61,245,.22)}
.btn-primary:hover{transform:translateY(-2px);background-position:100% 0;box-shadow:var(--shadow-btn)}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--bg-alt);transform:translateY(-2px)}
.btn:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
@media (max-width:479px){.btn{width:100%}.hero-actions{flex-direction:column}}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;height:72px;
  background:rgba(245,243,252,.88);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:height .25s ease,background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{height:64px;background:rgba(255,255,255,.94);box-shadow:0 4px 18px rgba(23,18,50,.05)}
.nav-wrap{position:relative;height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink-600);padding:6px 0;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px;background-image:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s ease}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink-900);font-weight:700}
.brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:10px}
.brand-mark{position:relative;width:40px;height:40px;border-radius:13px;background-image:var(--grad);color:#fff;font-size:20px;font-weight:800;display:grid;place-items:center;box-shadow:var(--shadow-2);flex:0 0 40px}
.brand-mark i{position:absolute;right:7px;bottom:7px;width:6px;height:6px;border-radius:50%;background:#fff;box-shadow:0 0 0 2px rgba(255,255,255,.4)}
.brand-text strong{display:block;font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--ink-900);line-height:1.2;white-space:nowrap}
.brand-text small{display:block;font-size:12px;color:var(--ink-400);line-height:1.45;white-space:nowrap}
.hamburger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.hamburger span{display:block;width:16px;height:1.8px;border-radius:2px;background:var(--ink-900);transition:.24s}
.hamburger.is-active span:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.hamburger.is-active span:nth-child(2){opacity:0}
.hamburger.is-active span:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}
.nav-actions{display:flex;align-items:center;gap:12px}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;z-index:120;
  background:#fff;padding:26px 22px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;box-shadow:-12px 0 40px rgba(23,18,50,.16);
}
.drawer.is-open{transform:none}
.drawer-title{font-size:13px;color:var(--ink-400);margin:10px 0 6px;letter-spacing:.06em}
.drawer a.drawer-link{display:block;padding:13px 14px;border-radius:var(--r-sm);font-size:16px;font-weight:600;color:var(--ink-900);transition:background .2s}
.drawer a.drawer-link:hover,.drawer a.drawer-link.is-active{background:var(--bg-alt);color:var(--brand)}
.drawer .btn{margin-top:18px}
.overlay{position:fixed;inset:0;background:rgba(23,18,50,.5);opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;z-index:110}
.overlay.is-open{opacity:1;visibility:visible}
@media (max-width:899px){
  .nav-left{display:none}
  .nav-right .nav-link{display:none}
  .hamburger{display:inline-flex}
  .brand-text small{display:none}
}
@media (max-width:479px){
  .brand-text strong{font-size:15px}
  .nav-cta{display:none}
}

/* hero */
.hero{position:relative;overflow:hidden;padding:76px 0 96px;background:linear-gradient(135deg,var(--bg) 0%,var(--bg-alt) 100%)}
.hero::before{content:"";position:absolute;right:-160px;top:-180px;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(91,61,245,.16),rgba(193,59,232,.06) 52%,transparent 72%);pointer-events:none}
.hero::after{content:"";position:absolute;left:-120px;bottom:-200px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(20,200,176,.12),transparent 68%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 16px;border-radius:999px;background:rgba(91,61,245,.1);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.02em}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background-image:var(--grad)}
.hero-title{margin-top:20px;font-size:clamp(30px,4.2vw,52px);line-height:1.18;font-weight:800;color:var(--ink-900);letter-spacing:-.02em}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.8;color:var(--ink-600);max-width:620px}
.hero-actions{margin-top:32px;display:flex;gap:12px;flex-wrap:wrap}
.hero-trust{margin-top:28px;display:flex;gap:22px;flex-wrap:wrap;font-size:13px;color:var(--ink-400)}
.hero-trust li{display:flex;align-items:center;gap:8px}
.hero-trust li::before{content:"";width:6px;height:6px;border-radius:50%;background-image:var(--grad)}
.hero-visual{position:relative;border-radius:var(--r-xl);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--shadow-2);border:1px solid rgba(255,255,255,.5)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(91,61,245,.45),rgba(193,59,232,.32))}
.hero-badge{position:absolute;z-index:3;background:rgba(255,255,255,.96);border-radius:var(--r-md);padding:12px 16px;box-shadow:var(--shadow-1);font-size:13px;color:var(--ink-400);line-height:1.35}
.hero-badge b{display:block;font-size:20px;font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-badge.b1{left:20px;bottom:22px}
.hero-badge.b2{right:20px;top:22px}
.hero-badge.b3{right:20px;bottom:22px}

/* metrics */
.sec-metrics{background:linear-gradient(140deg,var(--dark-1) 0%,var(--dark-2) 100%);color:#fff;padding:96px 0}
.sec-metrics .h2{color:#fff}
.sec-metrics .section-sub{color:rgba(255,255,255,.66)}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.metric{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-lg);padding:28px;transition:transform .22s ease-out,border-color .22s ease}
.metric:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.28)}
.metric-num{display:flex;align-items:baseline;gap:6px;font-size:clamp(34px,4vw,52px);font-weight:800;line-height:1.05;color:#fff;font-variant-numeric:tabular-nums}
.metric-num span{font-size:14px;font-weight:600;color:rgba(255,255,255,.7)}
.metric-label{margin-top:10px;font-size:14px;color:rgba(255,255,255,.72)}
.metric-delta{display:inline-flex;align-items:center;gap:6px;margin-top:16px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600}
.delta-up{background:rgba(20,200,176,.16);color:#5FE3D0}
.delta-warn{background:rgba(255,138,61,.16);color:#FFB27A}
.metric-note{margin-top:12px;font-size:12px;color:rgba(255,255,255,.5)}

/* bento */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bento-main{grid-column:span 6;grid-row:span 2;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:20px;transition:transform .22s ease-out,border-color .22s,box-shadow .22s}
.bento-main:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.bento-main img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:18px;border:1px solid var(--line)}
.bento-main h3{font-size:24px;font-weight:800;color:var(--ink-900);line-height:1.3}
.bento-main p{font-size:15px;color:var(--ink-600)}
.bento-card{grid-column:span 3;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:12px;transition:transform .22s ease-out,border-color .22s,box-shadow .22s}
.bento-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.bento-card:hover .icon-box{transform:translateX(2px)}
.icon-box{width:44px;height:44px;border-radius:var(--r-sm);background-image:var(--grad);display:grid;place-items:center;color:#fff;transition:transform .22s ease-out}
.icon-box svg{width:22px;height:22px}
.bento-card h3{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.35}
.bento-card p{font-size:14px;color:var(--ink-400);line-height:1.7}
.bento-card .text-link{margin-top:auto;font-size:14px}

/* compare */
.seg{display:inline-flex;gap:4px;padding:4px;border-radius:999px;background:var(--bg-alt);margin-bottom:28px}
.seg button{height:38px;padding:0 20px;border-radius:999px;font-size:14px;font-weight:600;color:var(--ink-400);transition:.2s}
.seg button.is-active{background:#fff;color:var(--brand);box-shadow:var(--shadow-1)}
.compare{display:grid;grid-template-columns:1fr 1px 1fr;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-1)}
.compare-col{padding:32px}
.compare-col h3{font-size:18px;font-weight:700;color:var(--ink-900);margin-bottom:6px}
.compare-col .compare-hint{font-size:13px;color:var(--ink-400);margin-bottom:16px}
.compare-divider{background:var(--line)}
.compare-row{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--line);font-size:15px;line-height:1.7}
.compare-row:last-child{border-bottom:0}
.dot{flex:0 0 24px;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;margin-top:2px}
.dot svg{width:13px;height:13px}
.dot-no{background:rgba(255,138,61,.14);color:var(--orange)}
.dot-yes{background:rgba(20,200,176,.14);color:var(--mint-deep)}
.compare-panel{display:none}
.compare-panel.is-active{display:grid;grid-template-columns:1fr 1px 1fr;animation:fadeIn .2s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .22s ease-out,border-color .22s,box-shadow .22s}
.news-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.news-card.is-feature{grid-column:span 3;flex-direction:row}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background-image:var(--grad)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.news-card:hover .news-thumb img{transform:scale(1.02)}
.news-card.is-feature .news-thumb{flex:0 0 44%;aspect-ratio:auto;min-height:280px}
.news-body{display:flex;flex-direction:column;gap:12px;padding:24px;flex:1;min-width:0}
.news-card.is-feature .news-body{padding:32px}
.badge{display:inline-flex;align-items:center;align-self:flex-start;height:26px;padding:0 12px;border-radius:999px;border:1px solid rgba(20,200,176,.5);background:rgba(20,200,176,.08);color:var(--mint-deep);font-size:12px;font-weight:600}
.news-title{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card.is-feature .news-title{font-size:24px}
.news-summary{font-size:14px;color:var(--ink-400);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-400)}
.news-arrow{margin-left:auto;color:var(--brand);font-weight:600}
.empty-state{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:16px;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-lg);background:var(--surface);text-align:center}
.empty-art{width:120px;height:80px;border-radius:18px;background-image:var(--grad);opacity:.16}
.empty-state p{font-size:15px;color:var(--ink-400)}

/* faq */
.faq-list{max-width:840px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:border-color .2s}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background-image:var(--grad);transform:scaleY(0);transform-origin:top;transition:transform .26s ease}
.faq-item.is-open{border-color:rgba(91,61,245,.35)}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.55}
.faq-num{flex:0 0 24px;width:24px;height:24px;border-radius:50%;background:rgba(91,61,245,.1);color:var(--brand);font-size:12px;font-weight:700;display:grid;place-items:center}
.faq-icon{position:relative;flex:0 0 22px;width:22px;height:22px;margin-left:auto;transition:transform .26s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:50%;top:3px;bottom:3px;width:2px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:3px;right:3px;height:2px;transform:translateY(-50%)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:0 24px 22px 62px;font-size:15px;line-height:1.8;color:var(--ink-600)}

/* cta form */
.cta-panel{position:relative;overflow:hidden;display:grid;grid-template-columns:5fr 7fr;gap:48px;padding:56px;border-radius:var(--r-xl);background:linear-gradient(140deg,var(--dark-1) 0%,var(--dark-2) 100%);color:#fff;box-shadow:var(--shadow-2)}
.cta-panel::before{content:"";position:absolute;right:-140px;top:-160px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(193,59,232,.28),transparent 70%)}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{font-size:clamp(24px,2.8vw,34px);font-weight:800;line-height:1.28;color:#fff}
.cta-copy p{margin-top:16px;font-size:15px;color:rgba(255,255,255,.72);line-height:1.8}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.8)}
.cta-points li{display:flex;align-items:center;gap:10px}
.cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background-image:var(--grad);box-shadow:0 0 0 3px rgba(255,255,255,.08)}
.cta-form{position:relative;z-index:2;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-lg);padding:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1/-1}
.field label{font-size:14px;color:rgba(255,255,255,.8)}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.08);color:#fff;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.42)}
.field select option{color:var(--ink-900)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:transparent;box-shadow:0 0 0 2px var(--brand);background:rgba(255,255,255,.14)}
.field.is-error input,.field.is-error select,.field.is-error textarea{border-color:var(--orange);box-shadow:0 0 0 2px rgba(255,138,61,.32)}
.err-msg{display:none;font-size:13px;color:#FFB27A}
.field.is-error .err-msg{display:block}
.form-ok{display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-sm);background:rgba(20,200,176,.14);border:1px solid rgba(20,200,176,.42);color:#5FE3D0;font-size:14px;align-items:center;gap:10px}
.form-ok.is-show{display:flex}
.form-submit{margin-top:20px}

/* footer */
.site-footer{position:relative;background:linear-gradient(140deg,var(--dark-1) 0%,var(--dark-2) 100%);color:rgba(255,255,255,.72)}
.site-footer::before{content:"";display:block;height:1px;background-image:var(--grad)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:72px 0 48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{font-size:17px;font-weight:700;color:#fff;letter-spacing:.02em}
.footer-brand small{display:block;font-size:12px;color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:340px}
.footer-contact{margin-top:18px;font-size:13px;color:rgba(255,255,255,.6);line-height:1.9}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-links a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.72);transition:color .2s,transform .2s}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.55)}
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:90;width:46px;height:46px;border-radius:50%;
  background-image:var(--grad);color:#fff;display:grid;place-items:center;
  box-shadow:var(--shadow-btn);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s,visibility .25s,transform .25s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}

/* responsive */
@media (max-width:1023px){
  .section{padding:80px 0}
  .hero-grid{grid-template-columns:7fr 5fr;gap:36px}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .bento-main{grid-column:span 12;grid-row:auto}
  .bento-card{grid-column:span 6}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-card.is-feature{grid-column:span 2;flex-direction:column}
  .news-card.is-feature .news-thumb{flex:none;width:100%;aspect-ratio:16/9;min-height:0}
  .news-card.is-feature .news-body{padding:24px}
  .news-card.is-feature .news-title{font-size:20px}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .section{padding:64px 0}
  .container{padding:0 16px}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:-1}
  .hero-title{font-size:clamp(27px,7vw,36px)}
  .hero-lead{font-size:16px}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .metric{padding:20px}
  .bento-card{grid-column:span 12}
  .compare-col{padding:24px}
  .news-grid{grid-template-columns:1fr}
  .news-card.is-feature{grid-column:span 1}
  .faq-a-inner{padding-left:24px}
  .cta-panel{padding:28px}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:52px 0 36px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:479px){
  .hero-badge.b3{display:none}
  .section-head{margin-bottom:32px}
}

/* roulang page: article */
:root{
  --brand:#5B3DF5;
  --brand-2:#8A3BEA;
  --brand-3:#C13BE8;
  --grad:linear-gradient(120deg,#5B3DF5 0%,#8A3BEA 45%,#C13BE8 100%);
  --grad-rev:linear-gradient(60deg,#5B3DF5 0%,#8A3BEA 45%,#C13BE8 100%);
  --mint:#14C8B0;
  --orange:#FF8A3D;
  --yellow:#F7D23E;
  --ink-900:#171232;
  --ink-600:#4A4566;
  --ink-400:#8A85A6;
  --bg:#F5F3FC;
  --bg-alt:#EDEAF9;
  --surface:#FFFFFF;
  --line:#E3DFF3;
  --dark-1:#171232;
  --dark-2:#2B1F5C;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(23,18,50,.04),0 4px 16px rgba(23,18,50,.06);
  --shadow-2:0 8px 32px rgba(91,61,245,.12);
  --shadow-btn:0 12px 28px rgba(91,61,245,.28);
  --ease:220ms ease-out;
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-2);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.25;font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background-image:var(--grad);background-size:180% 180%;background-position:0% 50%;
  color:#fff;box-shadow:0 6px 18px rgba(91,61,245,.22);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-btn);background-position:100% 50%;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand);border:1.5px solid var(--brand);}
.btn-ghost:hover{background:var(--bg-alt);color:var(--brand-2);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;pointer-events:none;}
.link-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);position:relative;}
.link-text::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);}
.link-text:hover::after{transform:scaleX(1);}

/* ============ 头部与导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,243,252,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.94);box-shadow:0 4px 20px rgba(23,18,50,.06);}
.header-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  height:72px;transition:height var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:12px;padding:4px;}
.brand-mark{
  position:relative;width:40px;height:40px;border-radius:12px;background-image:var(--grad);
  color:#fff;display:grid;place-items:center;font-size:20px;font-weight:800;
  box-shadow:0 6px 16px rgba(91,61,245,.28);flex:none;
}
.brand-mark i{position:absolute;right:7px;top:8px;width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 2px rgba(255,255,255,.5);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--ink-900);}
.brand-text small{font-size:12px;color:var(--ink-400);letter-spacing:.01em;}
.nav-side{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-600);padding:6px 0;
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-4px;height:3px;width:0;border-radius:3px;
  background-image:var(--grad);transition:width var(--ease);
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:#3A1FA8;font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-right{gap:20px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(23,18,50,.5);z-index:80;opacity:0;transition:opacity var(--ease);}
.drawer-mask.is-show{opacity:1;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:90;
  background:#fff;transform:translateX(102%);transition:transform 280ms ease-out;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;box-shadow:-12px 0 40px rgba(23,18,50,.18);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--ink-600);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;padding-top:18px;}
.drawer-link{padding:13px 12px;border-radius:12px;font-size:15px;font-weight:500;color:var(--ink-600);}
.drawer-link:hover,.drawer-link.is-active{background:var(--bg-alt);color:#3A1FA8;}
.drawer-nav .btn{margin-top:14px;}

/* ============ 面包屑 ============ */
.crumbs{padding:26px 0 0;font-size:14px;color:var(--ink-400);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.crumbs a{color:var(--ink-400);}
.crumbs a:hover{color:var(--brand);}
.crumb-sep{color:#C7C1E0;}
.crumb-current{color:var(--ink-600);max-width:260px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:inline-block;vertical-align:bottom;}

/* ============ 文章头部 ============ */
.article-head{padding:28px 0 34px;border-bottom:1px solid var(--line);}
.article-head h1{font-size:40px;font-weight:800;letter-spacing:-.01em;line-height:1.22;max-width:900px;}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:20px;font-size:14px;color:var(--ink-400);}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.01em;
}
.badge-mint{color:#0B8E7E;background:rgba(20,200,176,.10);border:1px solid rgba(20,200,176,.45);}
.badge-brand{color:#3A1FA8;background:rgba(91,61,245,.08);border:1px solid rgba(91,61,245,.28);}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C7C1E0;}
.article-cover{margin-top:28px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 200ms ease-out;}
.article-cover:hover img{transform:scale(1.02);}

/* ============ 布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 300px;
  gap:56px;justify-content:center;align-items:start;
  padding:48px 0 88px;
}
.article-main{min-width:0;}

/* ============ 正文排版 ============ */
.article-body{font-size:17px;line-height:1.9;color:var(--ink-600);}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;font-size:30px;font-weight:800;color:var(--ink-900);
  margin:2em 0 .8em;padding-left:20px;line-height:1.3;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:5px;border-radius:5px;background-image:var(--grad);
}
.article-body h3{font-size:24px;font-weight:700;color:var(--ink-900);margin:1.6em 0 .6em;}
.article-body h4{font-size:19px;font-weight:700;color:var(--ink-900);margin:1.4em 0 .5em;}
.article-body blockquote{
  margin:1.6em 0;padding:20px 22px;background:#F0EDFC;border-left:4px solid var(--brand);
  border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-600);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0;list-style:none;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.55em;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background-image:var(--grad);
}
.article-body ol{counter-reset:li;}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:.55em;counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.35em;width:21px;height:21px;border-radius:50%;
  background:rgba(91,61,245,.1);color:#3A1FA8;font-size:12px;font-weight:700;display:grid;place-items:center;
}
.article-body img{border-radius:var(--r-md);margin:1.6em 0 .7em;width:100%;height:auto;}
.article-body figcaption,.article-body .caption{font-size:13px;color:var(--ink-400);text-align:center;margin-bottom:1.6em;}
.article-body a{color:var(--brand);font-weight:500;border-bottom:1px solid rgba(91,61,245,.35);}
.article-body a:hover{color:var(--brand-2);border-bottom-color:var(--brand-2);}
.article-body table{
  width:100%;border-collapse:collapse;display:block;overflow-x:auto;margin:1.6em 0;
  border:1px solid var(--line);border-radius:var(--r-md);font-size:15px;background:#fff;
}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap;}
.article-body th{background:var(--bg-alt);color:var(--ink-900);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAF9FE;}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body strong{color:var(--ink-900);font-weight:700;}

/* 阅读提示条 */
.read-hint{
  display:flex;gap:12px;align-items:flex-start;margin-top:8px;margin-bottom:34px;
  padding:16px 18px;border-radius:var(--r-md);background:var(--bg-alt);border:1px solid var(--line);font-size:14.5px;color:var(--ink-600);
}
.read-hint svg{flex:none;margin-top:3px;}

/* 空态 */
.empty-state{
  padding:64px 24px;text-align:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-1);
}
.empty-art{
  width:96px;height:96px;margin:0 auto 22px;border-radius:26px;background-image:var(--grad);
  opacity:.14;
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--ink-400);margin-bottom:22px;}

/* ============ 标签 ============ */
.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:13px;color:var(--ink-400);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-600);transition:all var(--ease);
}
.tag:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}

/* ============ 上下篇 ============ */
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:32px;}
.pn-card{
  display:block;padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.pn-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-2);}
.pn-card small{display:block;font-size:12.5px;color:var(--ink-400);margin-bottom:8px;}
.pn-card strong{display:block;font-size:16px;color:var(--ink-900);font-weight:600;line-height:1.5;}
.pn-card.is-next{text-align:right;}

/* ============ 相关推荐 ============ */
.section{padding:0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:56px 0 22px;}
.section-head h2{font-size:26px;font-weight:800;}
.section-head p{font-size:14px;color:var(--ink-400);margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.rel-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-2);}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background-image:var(--grad);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 200ms ease-out;}
.rel-card:hover .rel-thumb img{transform:scale(1.02);}
.rel-body{padding:18px 20px 20px;}
.rel-body .badge{margin-bottom:10px;}
.rel-body h3{font-size:16px;font-weight:650;line-height:1.5;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-body p{font-size:13.5px;color:var(--ink-400);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ============ 侧栏 ============ */
.article-aside{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.aside-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow-1);}
.aside-card h3{font-size:16px;margin-bottom:14px;}
.aside-list{display:flex;flex-direction:column;gap:2px;}
.aside-list a{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:14px;color:var(--ink-600);border-bottom:1px dashed var(--line);}
.aside-list a:last-child{border-bottom:0;}
.aside-list a:hover{color:var(--brand);padding-left:4px;}
.aside-list i{width:6px;height:6px;border-radius:50%;background-image:var(--grad);flex:none;}
.aside-cta{
  background-image:linear-gradient(140deg,#171232 0%,#2B1F5C 100%);
  border-radius:var(--r-lg);padding:26px 24px;color:#fff;box-shadow:var(--shadow-2);
}
.aside-cta h3{color:#fff;font-size:18px;margin-bottom:10px;}
.aside-cta p{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.75;margin-bottom:18px;}
.aside-cta .btn{width:100%;}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);}
.faq-item.is-open{border-color:rgba(91,61,245,.4);box-shadow:var(--shadow-2);}
.faq-q{
  display:flex;align-items:center;gap:14px;width:100%;text-align:left;
  padding:20px 22px;font-size:16.5px;font-weight:600;color:var(--ink-900);
}
.faq-idx{
  flex:none;width:24px;height:24px;border-radius:50%;background:rgba(91,61,245,.1);
  color:#3A1FA8;font-size:12px;font-weight:700;display:grid;place-items:center;
}
.faq-q span:nth-of-type(2){flex:1;}
.faq-icon{position:relative;flex:none;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transition:transform 260ms ease-out;
}
.faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item.is-open .faq-q{position:relative;}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:4px;background-image:var(--grad);
}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease-out;}
.faq-a-inner{padding:0 22px 22px 60px;font-size:15px;line-height:1.85;color:var(--ink-600);}

/* ============ 转化表单 ============ */
.cta-section{padding:88px 0;}
.cta-panel{
  display:grid;grid-template-columns:5fr 7fr;gap:48px;
  background-image:linear-gradient(140deg,#171232 0%,#2B1F5C 100%);
  border-radius:28px;padding:56px;color:#fff;box-shadow:0 24px 60px rgba(23,18,50,.22);
}
.cta-panel h2{color:#fff;font-size:32px;font-weight:800;line-height:1.28;}
.cta-panel .cta-lead{margin-top:16px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.72);}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:rgba(255,255,255,.86);}
.cta-points svg{flex:none;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;color:rgba(255,255,255,.8);}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-sm);
  background:#fff;border:1.5px solid transparent;color:var(--ink-900);font-size:14.5px;
  transition:box-shadow var(--ease),border-color var(--ease),background var(--ease);
}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#A8A3C0;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#FBFAFF;box-shadow:0 0 0 3px rgba(91,61,245,.28);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,138,61,.22);}
.field-error{font-size:13px;color:#FFB183;min-height:0;display:none;}
.field.has-error .field-error{display:block;}
.form-note{font-size:12.5px;color:rgba(255,255,255,.55);margin-top:14px;line-height:1.7;}
.form-success{
  display:none;align-items:center;gap:10px;margin-top:16px;padding:12px 16px;border-radius:var(--r-sm);
  background:rgba(20,200,176,.14);border:1px solid rgba(20,200,176,.45);color:#8DF0E0;font-size:14px;
}
.form-success.is-show{display:flex;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background-image:linear-gradient(140deg,#171232 0%,#2B1F5C 100%);
  color:rgba(255,255,255,.72);padding:72px 0 0;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background-image:var(--grad);opacity:.9;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand strong{display:block;color:#fff;font-size:17px;font-weight:700;letter-spacing:.02em;}
.footer-brand small{display:block;font-size:12px;color:rgba(255,255,255,.55);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;}
.footer-contact{margin-top:18px;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--ease),transform var(--ease);}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.8);font-size:13px;}
.to-top:hover{color:#fff;}
.back-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:14px;
  background-image:var(--grad);color:#fff;display:grid;place-items:center;z-index:70;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{transform:translateY(-3px);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1080px;}
  .article-head h1{font-size:36px;}
}
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-bottom:72px;}
  .article-aside{display:none;}
}
@media (max-width:1023px){
  .article-layout{padding-top:40px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;gap:34px;padding:44px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:899px){
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:flex;}
  .brand{position:static;transform:none;}
  .header-inner{justify-content:space-between;}
  .brand-text small{display:none;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .crumbs{padding-top:18px;}
  .article-head{padding:20px 0 26px;}
  .article-head h1{font-size:29px;}
  .article-body{font-size:16.5px;}
  .article-body h2{font-size:24px;padding-left:16px;}
  .article-body h3{font-size:20px;}
  .article-layout{padding:32px 0 64px;}
  .prev-next{grid-template-columns:1fr;}
  .pn-card.is-next{text-align:left;}
  .related-grid{grid-template-columns:1fr;}
  .faq-q{font-size:15.5px;padding:17px 18px;}
  .faq-a-inner{padding:0 18px 20px 52px;}
  .cta-section{padding:60px 0;}
  .cta-panel{padding:32px 22px;border-radius:22px;}
  .cta-panel h2{font-size:25px;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .site-footer{padding-top:52px;}
}
@media (max-width:479px){
  .article-head h1{font-size:25px;}
  .article-body{font-size:16px;}
  .btn{width:100%;}
  .nav-toggle,.back-top{width:44px;}
  .back-top{right:16px;bottom:16px;}
  .article-meta{font-size:13px;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand:#5B3DF5;
  --brand-2:#8A3BEA;
  --brand-3:#C13BE8;
  --brand-deep:#3A2B8F;
  --grad:linear-gradient(120deg,#5B3DF5 0%,#8A3BEA 45%,#C13BE8 100%);
  --grad-dark:linear-gradient(140deg,#171232 0%,#2B1F5C 100%);
  --mint:#14C8B0;
  --orange:#FF8A3D;
  --lemon:#F7D23E;
  --ink-900:#171232;
  --ink-600:#4A4566;
  --ink-400:#8A85A6;
  --bg:#F5F3FC;
  --bg-alt:#EDEAF9;
  --surface:#FFFFFF;
  --line:#E3DFF3;
  --r-xl:28px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:14px;
  --shadow-1:0 1px 2px rgba(23,18,50,.04),0 4px 16px rgba(23,18,50,.06);
  --shadow-2:0 8px 32px rgba(91,61,245,.12);
  --shadow-3:0 12px 28px rgba(91,61,245,.28);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}

/* ============ 基础 Reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.25;font-weight:700}
h1{font-size:clamp(30px,3.6vw,46px);font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(24px,2.4vw,34px)}
h3{font-size:clamp(19px,1.6vw,23px)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:rgba(91,61,245,.18)}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1280px){.container{max-width:1280px}}
@media (max-width:480px){.container{padding:0 16px}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1.5px solid transparent;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .24s ease,background-color .24s ease,background-position .24s ease,border-color .24s ease,color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  color:#fff;
  background-image:linear-gradient(120deg,#5B3DF5 0%,#8A3BEA 45%,#C13BE8 100%);
  background-size:200% 100%;
  background-position:0% 50%;
  box-shadow:0 6px 18px rgba(91,61,245,.22);
}
.btn-primary:hover{background-position:100% 50%;transform:translateY(-2px);box-shadow:var(--shadow-3)}
.btn-secondary{
  color:var(--ink-900);
  background:#fff;
  border-color:var(--brand);
}
.btn-secondary:hover{background:var(--bg-alt);transform:translateY(-2px)}
.btn-light{
  color:var(--brand-deep);
  background:#fff;
  box-shadow:0 8px 22px rgba(23,18,50,.18);
}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(23,18,50,.24)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  position:relative;
  padding-bottom:2px;
}
.btn-text::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:1.5px;
  background:var(--grad);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s ease;
}
.btn-text:hover::after{transform:scaleX(1)}
.btn-text svg{transition:transform .2s ease}
.btn-text:hover svg{transform:translateX(3px)}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(23,18,50,.07)}
.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:72px;
  transition:height .24s ease;
}
.site-header.is-scrolled .header-inner{height:64px}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--ink-600);
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:3px;
  border-radius:999px;
  background:var(--grad);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-deep);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  position:absolute;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  display:flex;
  align-items:center;
  gap:10px;
}
.brand-mark{
  position:relative;
  width:40px;
  height:40px;
  border-radius:12px;
  background:var(--grad);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:20px;
  font-weight:800;
  letter-spacing:0;
  box-shadow:0 6px 16px rgba(91,61,245,.28);
  flex:none;
}
.brand-mark i{
  position:absolute;
  right:7px;
  bottom:7px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 2px rgba(255,255,255,.4);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:.02em;white-space:nowrap}
.brand-text small{font-size:11px;font-weight:400;color:var(--ink-400);margin-top:3px;white-space:nowrap}
.header-actions{display:flex;align-items:center;gap:22px}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);box-shadow:var(--shadow-1)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .22s ease,opacity .22s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============ 移动端抽屉 ============ */
.drawer-overlay{
  position:fixed;
  inset:0;
  background:rgba(23,18,50,.5);
  z-index:190;
  opacity:0;
  pointer-events:none;
  transition:opacity .28s ease;
}
.drawer-overlay.is-open{opacity:1;pointer-events:auto}
.nav-drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:84vw;
  max-width:360px;
  z-index:200;
  background:#fff;
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:26px;
  transform:translateX(100%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  box-shadow:-12px 0 40px rgba(23,18,50,.16);
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-head .brand{position:static;transform:none;left:auto;top:auto}
.drawer-close{
  width:38px;
  height:38px;
  border-radius:12px;
  border:1px solid var(--line);
  display:grid;
  place-items:center;
  color:var(--ink-600);
  transition:border-color .2s ease,color .2s ease;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-links{display:flex;flex-direction:column;gap:6px}
.drawer-link{
  display:block;
  padding:13px 14px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:500;
  color:var(--ink-600);
  transition:background-color .2s ease,color .2s ease;
}
.drawer-link:hover{background:var(--bg-alt);color:var(--ink-900)}
.drawer-link.is-active{
  background:var(--bg-alt);
  color:var(--brand-deep);
  font-weight:600;
  box-shadow:inset 3px 0 0 0 var(--brand);
}
.drawer-cta{width:100%}
@media (min-width:900px){.nav-drawer,.drawer-overlay{display:none}}
@media (max-width:899px){
  .nav-side{display:none}
  .header-inner{justify-content:flex-end;height:66px}
  .site-header.is-scrolled .header-inner{height:60px}
  .header-actions{gap:10px}
  .header-cta{height:38px;padding:0 16px;font-size:13px}
  .nav-toggle{display:flex}
  .brand{gap:8px}
  .brand-mark{width:36px;height:36px;border-radius:11px;font-size:18px}
  .brand-text strong{font-size:15px}
  .brand-text small{display:none}
}
@media (max-width:420px){
  .header-cta{display:none}
}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:var(--ink-400);
  padding-top:24px;
}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line);font-size:13px}
.breadcrumb .current{color:var(--ink-600);font-weight:600}

/* ============ 分类页迷你 Hero ============ */
.cat-hero{
  position:relative;
  padding:0 0 84px;
  background:linear-gradient(160deg,#F7F5FE 0%,var(--bg-alt) 100%);
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;
  top:-180px;
  right:-120px;
  width:520px;
  height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(91,61,245,.14) 0%,rgba(193,59,232,.06) 45%,transparent 70%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";
  position:absolute;
  left:-60px;
  bottom:-120px;
  width:260px;
  height:260px;
  border-radius:48px;
  background:radial-gradient(circle,rgba(20,200,176,.10) 0%,transparent 70%);
  pointer-events:none;
}
.cat-hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
  padding-top:34px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(91,61,245,.10);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.eyebrow::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--grad);
}
.cat-hero h1{margin:20px 0 0}
.cat-hero .lead{
  margin-top:18px;
  font-size:17px;
  line-height:1.8;
  color:var(--ink-600);
  max-width:640px;
}
.cat-hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  margin-top:26px;
}
.dot-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-600);
}
.dot-item::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--grad);
  flex:none;
}
.cat-hero-media{
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-2);
  border:1px solid rgba(91,61,245,.14);
  position:relative;
}
.cat-hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .2s ease;
}
.cat-hero-media:hover img{transform:scale(1.02)}
.cat-hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(150deg,rgba(91,61,245,.16) 0%,rgba(193,59,232,.06) 55%,transparent 100%);
  pointer-events:none;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.section-head .section-sub{
  margin-top:14px;
  font-size:15px;
  color:var(--ink-400);
  max-width:620px;
}
.section-head-left{max-width:720px}

/* ============ 图文交替行 ============ */
.flow-stack{display:flex;flex-direction:column}
.flow-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
  padding:56px 0;
  border-top:1px solid var(--line);
}
.flow-row:first-child{border-top:0;padding-top:0}
.flow-row:last-child{padding-bottom:0}
.flow-row.is-reverse .flow-media{order:2}
.flow-media{
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.flow-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .2s ease;
}
.flow-row:hover .flow-media img{transform:scale(1.02)}
.flow-index{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand);
  text-transform:uppercase;
}
.flow-index::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--grad);
}
.flow-body h3{margin:14px 0 14px}
.flow-body p{font-size:15.5px;line-height:1.85;max-width:620px}
.flow-body .btn-text{margin-top:20px}
.flow-points{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:500;
  color:var(--brand-deep);
  background:rgba(91,61,245,.08);
  border:1px solid rgba(91,61,245,.16);
}
.chip-mint{
  color:#0C7F72;
  background:rgba(20,200,176,.10);
  border-color:rgba(20,200,176,.28);
}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;margin:0 auto}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:4px;
  background:var(--grad);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .26s ease;
}
.faq-item.is-open{border-color:rgba(91,61,245,.32);box-shadow:var(--shadow-2)}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 24px;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-num{
  flex:none;
  width:26px;
  height:26px;
  border-radius:50%;
  display:grid;
  place-items:center;
  font-size:12px;
  font-weight:700;
  color:var(--brand);
  background:rgba(91,61,245,.10);
  font-variant-numeric:tabular-nums;
}
.faq-q .faq-text{flex:1 1 auto;min-width:0}
.faq-icon{
  position:relative;
  flex:none;
  width:20px;
  height:20px;
  transition:transform .26s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  border-radius:2px;
  background:var(--brand);
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .26s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{
  padding:0 24px 22px 66px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-600);
}

/* ============ 交叉链接卡 ============ */
.cross-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:32px 36px;
  border-radius:var(--r-lg);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.cross-link:hover{
  transform:translateY(-4px);
  border-color:var(--brand);
  box-shadow:var(--shadow-2);
}
.cross-tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:#0C7F72;
  background:rgba(20,200,176,.10);
  border:1px solid rgba(20,200,176,.30);
}
.cross-link h3{margin:14px 0 10px;transition:color .2s ease}
.cross-link:hover h3{color:var(--brand)}
.cross-link p{font-size:15px;max-width:640px}
.cross-arrow{
  flex:none;
  width:52px;
  height:52px;
  border-radius:50%;
  display:grid;
  place-items:center;
  color:#fff;
  background:var(--grad);
  box-shadow:0 8px 22px rgba(91,61,245,.28);
  transition:transform .22s ease;
}
.cross-link:hover .cross-arrow{transform:translateX(4px)}

/* ============ 底部 CTA ============ */
.cta-strip{padding:24px 0 96px}
.cta-panel{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:1.4fr auto;
  gap:32px;
  align-items:center;
  padding:56px 48px;
  border-radius:var(--r-xl);
  background:var(--grad);
  color:#fff;
  box-shadow:0 20px 48px rgba(91,61,245,.24);
}
.cta-panel::before{
  content:"";
  position:absolute;
  top:-90px;
  right:-60px;
  width:280px;
  height:280px;
  border-radius:48px;
  background:rgba(255,255,255,.12);
  transform:rotate(18deg);
  pointer-events:none;
}
.cta-panel::after{
  content:"";
  position:absolute;
  left:-40px;
  bottom:-80px;
  width:180px;
  height:180px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
  pointer-events:none;
}
.cta-panel h2{color:#fff;position:relative;z-index:1}
.cta-panel p{
  position:relative;
  z-index:1;
  margin-top:14px;
  max-width:640px;
  font-size:15.5px;
  color:rgba(255,255,255,.86);
}
.cta-panel .btn{position:relative;z-index:1}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  padding:64px 0 0;
  background:var(--grad-dark);
  color:rgba(255,255,255,.72);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:var(--grad);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand .brand-mark{box-shadow:0 8px 20px rgba(0,0,0,.3)}
.footer-brand strong{display:block;font-size:17px;font-weight:800;color:#fff;letter-spacing:.02em}
.footer-brand small{display:block;font-size:12px;color:rgba(255,255,255,.55);margin-top:3px}
.footer-desc{
  margin-top:20px;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.66);
  max-width:420px;
}
.footer-contact{
  margin-top:18px;
  font-size:13px;
  line-height:1.9;
  color:rgba(255,255,255,.55);
}
.footer-title{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-top{color:rgba(255,255,255,.72)}
.footer-top:hover{color:#fff}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:120;
  width:46px;
  height:46px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand);
  display:grid;
  place-items:center;
  box-shadow:var(--shadow-1);
  opacity:0;
  pointer-events:none;
  transition:opacity .24s ease,transform .24s ease,box-shadow .24s ease;
}
.back-top.is-visible{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .section{padding:76px 0}
  .cat-hero-grid{grid-template-columns:1fr;gap:40px;padding-top:28px}
  .cat-hero-media img{aspect-ratio:16/10}
  .flow-row{grid-template-columns:1fr;gap:28px;padding:44px 0}
  .flow-row.is-reverse .flow-media{order:0}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:32px}
  .cta-panel{grid-template-columns:1fr;padding:44px 36px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:60px 0}
  .cat-hero{padding-bottom:60px}
  .cat-hero .lead{font-size:15.5px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:34px}
  .flow-row{padding:36px 0}
  .faq-q{padding:18px 18px;font-size:15.5px;gap:12px}
  .faq-a-inner p{padding:0 18px 20px 56px}
  .cross-link{flex-direction:column;align-items:flex-start;padding:26px 24px}
  .cross-arrow{width:44px;height:44px}
  .cta-strip{padding:12px 0 72px}
  .cta-panel{padding:36px 24px;border-radius:var(--r-lg)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:36px}
  .footer-brand,.footer-desc,.footer-contact{grid-column:1 / -1}
  .back-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  h1{font-size:28px}
  .cat-hero-grid{padding-top:20px}
  .flow-body p{font-size:15px}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .btn-text{width:auto}
  .header-cta{width:auto}
  .cta-panel .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
/* ============================================================
   设计令牌
   ============================================================ */
:root{
  --brand:#5B3DF5;
  --brand-mid:#8A3BEA;
  --brand-end:#C13BE8;
  --brand-deep:#3B1D8C;
  --grad:linear-gradient(120deg,#5B3DF5 0%,#8A3BEA 45%,#C13BE8 100%);
  --grad-soft:linear-gradient(120deg,rgba(91,61,245,.10) 0%,rgba(193,59,232,.10) 100%);
  --grad-dark:linear-gradient(140deg,#171232 0%,#2B1F5C 100%);
  --mint:#14C8B0;
  --orange:#FF8A3D;
  --lemon:#F7D23E;
  --ink-900:#171232;
  --ink-600:#4A4566;
  --ink-400:#8A85A6;
  --bg:#F5F3FC;
  --bg-alt:#EDEAF9;
  --surface:#FFFFFF;
  --line:#E3DFF3;
  --dark-1:#171232;
  --dark-2:#2B1F5C;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:14px;
  --shadow-1:0 1px 2px rgba(23,18,50,.04),0 4px 16px rgba(23,18,50,.06);
  --shadow-2:0 8px 32px rgba(91,61,245,.12);
  --shadow-3:0 12px 28px rgba(91,61,245,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:72px;
}

/* ============================================================
   基础重置
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(91,61,245,.18)}

/* ============================================================
   容器与通用
   ============================================================ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1280px){.container{max-width:1280px}}
@media (max-width:520px){.container{padding:0 16px}}

.section{padding:104px 0}
.section-alt{background:var(--bg-alt)}
@media (max-width:900px){.section{padding:76px 0}}
@media (max-width:520px){.section{padding:56px 0}}

.section-head{max-width:720px;margin-bottom:48px}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{
  font-size:clamp(26px,3.2vw,34px);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--ink-900);
}
.section-desc{margin-top:16px;font-size:16px;color:var(--ink-600);max-width:660px}
.section-head.is-center .section-desc{margin-left:auto;margin-right:auto}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--brand-deep);
  background:rgba(91,61,245,.10);
  border:1px solid rgba(91,61,245,.16);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad)}
.eyebrow-light{color:#fff;background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22)}

.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
  position:relative;
}
.link-more::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;
  background:var(--grad);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .28s var(--ease);
}
.link-more:hover::after{transform:scaleX(1)}
.link-more .arrow{transition:transform .24s var(--ease)}
.link-more:hover .arrow{transform:translateX(4px)}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background-position .28s var(--ease),background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn-primary{
  color:#fff;
  background-image:var(--grad);
  background-size:200% 100%;
  background-position:0% 0;
}
.btn-primary:hover{
  transform:translateY(-2px);
  background-position:100% 0;
  box-shadow:var(--shadow-3);
}
.btn-outline{
  color:var(--brand-deep);
  background:#fff;
  border-color:rgba(91,61,245,.55);
}
.btn-outline:hover{background:var(--bg-alt);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-ghost-light{
  color:#fff;background:rgba(255,255,255,.10);
  border-color:rgba(255,255,255,.34);
}
.btn-ghost-light:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-light{color:var(--brand-deep);background:#fff;border-color:#fff}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.22)}

/* ============================================================
   品牌标识
   ============================================================ */
.brand{display:inline-flex;align-items:center;gap:12px}
.brand-mark{
  position:relative;
  width:40px;height:40px;flex:0 0 40px;
  border-radius:13px;
  background:var(--grad);
  color:#fff;font-size:20px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(91,61,245,.30);
}
.brand-mark i{
  position:absolute;right:7px;bottom:8px;
  width:6px;height:6px;border-radius:50%;
  background:var(--lemon);
  box-shadow:0 0 0 2px rgba(255,255,255,.55);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink-900)}
.brand-text small{font-size:12px;color:var(--ink-400);letter-spacing:.02em}

/* ============================================================
   页头与导航
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:60;
  height:var(--header-h);
  background:rgba(245,243,252,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:height .25s var(--ease),background-color .25s var(--ease);
}
.site-header.is-scrolled{height:64px;background:rgba(245,243,252,.96)}
.header-inner{
  height:100%;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-600);
  padding:6px 0;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;border-radius:999px;
  background:var(--grad);
  transform:scaleX(0);transform-origin:left;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-deep);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{justify-self:center}
.header-right{justify-self:end;display:flex;align-items:center;gap:18px}

.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;position:relative;transition:transform .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:currentColor;
  transition:transform .24s var(--ease),top .24s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(90deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(90deg);opacity:0}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:84vw;max-width:360px;
  background:var(--surface);
  box-shadow:-16px 0 48px rgba(23,18,50,.18);
  transform:translateX(102%);
  transition:transform .32s var(--ease);
  display:flex;flex-direction:column;
  padding:24px 22px 32px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;z-index:80;
  background:rgba(23,18,50,.5);
  opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--ink-600);
}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 4px;font-size:16px;font-weight:500;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-deep);font-weight:600}
.drawer-nav a::after{content:"›";color:var(--ink-400);font-size:20px;line-height:1}
.drawer-foot{margin-top:auto;padding-top:28px}
.drawer-foot .btn{width:100%}
.drawer-note{margin-top:14px;font-size:13px;color:var(--ink-400);line-height:1.7}

/* ============================================================
   面包屑
   ============================================================ */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--ink-400);margin-bottom:22px;
}
.breadcrumb a{color:var(--ink-400);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(138,133,166,.6)}
.breadcrumb .current{color:var(--ink-900);font-weight:600}
.breadcrumb-light,.breadcrumb-light a{color:rgba(255,255,255,.66)}
.breadcrumb-light a:hover{color:#fff}
.breadcrumb-light .sep{color:rgba(255,255,255,.4)}
.breadcrumb-light .current{color:#fff}

/* ============================================================
   分类页2 迷你 Hero（深色反转）
   ============================================================ */
.page-hero-dark{
  position:relative;
  background:var(--grad-dark);
  color:#fff;
  overflow:hidden;
  padding:72px 0 88px;
}
.page-hero-dark::before{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(193,59,232,.38) 0%,rgba(193,59,232,0) 68%);
  pointer-events:none;
}
.page-hero-dark::after{
  content:"";position:absolute;left:-100px;bottom:-180px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,200,176,.20) 0%,rgba(20,200,176,0) 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-copy h1{
  font-size:clamp(30px,4.4vw,50px);
  font-weight:800;line-height:1.2;letter-spacing:-.02em;
  color:#fff;margin:20px 0 20px;
}
.hero-lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.80);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.70)}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lemon)}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(255,255,255,.18);box-shadow:0 24px 60px rgba(0,0,0,.32)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s var(--ease)}
.hero-media:hover img{transform:scale(1.02)}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(91,61,245,.55) 0%,rgba(23,18,50,.30) 58%,rgba(193,59,232,.42) 100%);
}
.hero-media .media-tag{
  position:absolute;left:20px;bottom:20px;z-index:3;
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;
  background:rgba(23,18,50,.62);
  border:1px solid rgba(255,255,255,.24);
  backdrop-filter:blur(8px);
  font-size:13px;color:#fff;font-weight:500;
}
.hero-media .media-tag i{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(20,200,176,.24);display:block}

@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media img{aspect-ratio:16/9}
}
@media (max-width:900px){
  .page-hero-dark{padding:48px 0 64px}
}

/* ============================================================
   异常速查卡
   ============================================================ */
.issue-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
@media (max-width:1023px){.issue-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.issue-grid{grid-template-columns:1fr}}

.issue-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.issue-card:hover{transform:translateY(-4px);border-color:rgba(91,61,245,.45);box-shadow:var(--shadow-2)}
.issue-card:hover .issue-icon{transform:translateX(2px)}
.issue-icon{
  width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad-soft);
  border:1px solid rgba(91,61,245,.18);
  color:var(--brand);
  margin-bottom:18px;
  transition:transform .22s var(--ease);
}
.issue-title{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.4;margin-bottom:10px}
.issue-text{font-size:14.5px;color:var(--ink-600);line-height:1.8}
.issue-meta{margin-top:16px;font-size:13px;color:var(--ink-400);display:flex;align-items:center;gap:8px}
.issue-meta b{color:var(--brand);font-weight:600}

/* ============================================================
   竖向步骤轴
   ============================================================ */
.step-axis{position:relative;max-width:900px;margin:0 auto;padding-left:0}
.step-axis::before{
  content:"";position:absolute;left:23px;top:16px;bottom:16px;width:2px;
  background:linear-gradient(180deg,#5B3DF5 0%,#8A3BEA 45%,#C13BE8 100%);
  border-radius:2px;opacity:.55;
}
.step-node{position:relative;display:flex;gap:28px;padding-bottom:36px}
.step-node:last-child{padding-bottom:0}
.step-index{
  position:relative;z-index:2;flex:0 0 48px;
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:800;
  color:#fff;background:var(--grad);
  box-shadow:0 8px 22px rgba(91,61,245,.30),0 0 0 6px var(--bg);
  font-variant-numeric:tabular-nums;
}
.section-alt .step-index{box-shadow:0 8px 22px rgba(91,61,245,.30),0 0 0 6px var(--bg-alt)}
.step-card{
  flex:1;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 28px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(91,61,245,.45);box-shadow:var(--shadow-2)}
.step-card h3{font-size:21px;font-weight:700;color:var(--ink-900);line-height:1.4;margin-bottom:10px}
.step-card p{font-size:15px;line-height:1.85;color:var(--ink-600)}
.step-points{margin-top:18px;display:grid;gap:10px}
.step-points li{
  position:relative;padding-left:22px;
  font-size:14.5px;color:var(--ink-600);line-height:1.75;
}
.step-points li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:50%;
  background:var(--grad);
}
.step-tagline{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 11px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--mint);
  background:rgba(20,200,176,.10);
  border:1px solid rgba(20,200,176,.35);
  margin-bottom:14px;
}
@media (max-width:640px){
  .step-axis::before{left:17px}
  .step-node{gap:16px}
  .step-index{flex:0 0 36px;width:36px;height:36px;font-size:15px;box-shadow:0 6px 16px rgba(91,61,245,.28),0 0 0 5px var(--bg)}
  .section-alt .step-index{box-shadow:0 6px 16px rgba(91,61,245,.28),0 0 0 5px var(--bg-alt)}
  .step-card{padding:22px 20px}
  .step-card h3{font-size:19px}
}

/* ============================================================
   数据徽章横排
   ============================================================ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding:36px 32px;
  border-radius:var(--r-lg);
  background:var(--grad-dark);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 18px 44px rgba(23,18,50,.22);
  position:relative;overflow:hidden;
}
.stat-strip::before{
  content:"";position:absolute;top:-120px;left:-60px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(91,61,245,.42) 0%,rgba(91,61,245,0) 70%);
}
.stat-pill{position:relative;z-index:2;text-align:left;padding-left:20px;border-left:1px solid rgba(255,255,255,.14)}
.stat-pill:first-child{border-left:0;padding-left:0}
.stat-value{
  font-size:clamp(30px,3.6vw,42px);
  font-weight:800;line-height:1.1;color:var(--lemon);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-value small{font-size:14px;font-weight:600;color:rgba(255,255,255,.72);margin-left:5px;letter-spacing:0}
.stat-label{margin-top:10px;font-size:13.5px;color:rgba(255,255,255,.68);line-height:1.6}
@media (max-width:900px){
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:26px 20px;padding:30px 24px}
  .stat-pill:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:480px){
  .stat-strip{grid-template-columns:1fr;gap:22px}
  .stat-pill{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:18px}
  .stat-pill:first-child{border-top:0;padding-top:0}
}

/* ============================================================
   场景图文卡
   ============================================================ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.scene-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.scene-grid{grid-template-columns:1fr}}

.scene-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(91,61,245,.45);box-shadow:var(--shadow-2)}
.scene-figure{position:relative;overflow:hidden}
.scene-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
.scene-card:hover .scene-figure img{transform:scale(1.02)}
.scene-badge{
  position:absolute;left:14px;top:14px;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;
  color:var(--mint);background:rgba(23,18,50,.72);
  border:1px solid rgba(20,200,176,.55);
  backdrop-filter:blur(6px);
}
.scene-body{padding:22px 24px 26px}
.scene-body h3{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.4;margin-bottom:10px}
.scene-body p{font-size:14.5px;color:var(--ink-600);line-height:1.8}

/* ============================================================
   清单列表
   ============================================================ */
.check-panel{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center;
}
@media (max-width:900px){.check-panel{grid-template-columns:1fr;gap:32px}}
.check-list{display:grid;gap:12px}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:18px 20px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.check-item:hover{transform:translateY(-3px);border-color:rgba(91,61,245,.42)}
.check-item .tick{
  flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  background:rgba(20,200,176,.12);
  display:flex;align-items:center;justify-content:center;
  color:var(--mint);margin-top:3px;
}
.check-item h3{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:4px;line-height:1.5}
.check-item p{font-size:14px;color:var(--ink-600);line-height:1.75}

/* ============================================================
   FAQ
   ============================================================ */
.faq-wrap{max-width:840px;margin:0 auto}
.faq-list{display:grid;gap:14px}
.faq-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--grad);
  transform:scaleY(0);transform-origin:top;
  transition:transform .28s var(--ease);
}
.faq-item.is-open{border-color:rgba(91,61,245,.4);box-shadow:var(--shadow-2)}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-question{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 22px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink-900);
}
.faq-num{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
  color:var(--brand-deep);background:rgba(91,61,245,.10);
  font-variant-numeric:tabular-nums;
}
.faq-text{flex:1;line-height:1.5}
.faq-icon{
  position:relative;flex:0 0 22px;width:22px;height:22px;
  transition:transform .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-icon::before{left:50%;top:4px;width:2px;height:14px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:4px;height:2px;width:14px;transform:translateY(-50%)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-answer{
  max-height:0;overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-answer p{
  padding:0 22px 22px 62px;font-size:15px;line-height:1.85;color:var(--ink-600);
}
@media (max-width:520px){
  .faq-question{padding:18px 16px;font-size:15.5px;gap:10px}
  .faq-answer p{padding:0 16px 18px 16px}
}

/* ============================================================
   交叉链接卡
   ============================================================ */
.cross-card{
  display:grid;grid-template-columns:1fr auto;align-items:center;gap:32px;
  padding:36px 40px;
  border-radius:var(--r-lg);
  background:var(--grad-soft);
  border:1px solid rgba(91,61,245,.22);
}
.cross-card h3{font-size:22px;font-weight:800;color:var(--ink-900);line-height:1.4;margin-bottom:10px}
.cross-card p{font-size:15px;color:var(--ink-600);line-height:1.8;max-width:640px}
@media (max-width:768px){
  .cross-card{grid-template-columns:1fr;padding:28px 24px;gap:22px}
  .cross-card .btn{width:100%}
}

/* ============================================================
   CTA 表单面板
   ============================================================ */
.cta-band{
  border-radius:28px;
  background:var(--grad-dark);
  color:#fff;
  padding:56px 56px;
  position:relative;overflow:hidden;
  box-shadow:0 24px 60px rgba(23,18,50,.26);
}
.cta-band::before{
  content:"";position:absolute;top:-140px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(193,59,232,.36) 0%,rgba(193,59,232,0) 70%);
}
.cta-band::after{
  content:"";position:absolute;left:-120px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,200,176,.18) 0%,rgba(20,200,176,0) 70%);
}
.cta-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:start;
}
.cta-copy h2{font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.3;color:#fff;margin-bottom:16px}
.cta-copy p{font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.76)}
.cta-list{margin-top:26px;display:grid;gap:12px}
.cta-list li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.78);align-items:flex-start}
.cta-list li::before{content:"";flex:0 0 6px;width:6px;height:6px;border-radius:50%;background:var(--mint);margin-top:9px}
@media (max-width:900px){
  .cta-band{padding:36px 24px;border-radius:24px}
  .cta-grid{grid-template-columns:1fr;gap:32px}
}

.form-panel{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  padding:28px 26px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1 / -1}
.field-label{font-size:14px;font-weight:600;color:rgba(255,255,255,.86)}
.field-label .req{color:var(--orange);margin-left:3px}
.input,.select,.textarea{
  width:100%;
  background:#fff;
  border:1.5px solid transparent;
  border-radius:var(--r-sm);
  padding:11px 14px;
  font-size:15px;
  color:var(--ink-900);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.input,.select{height:44px;padding:0 14px}
.select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8A85A6 50%),linear-gradient(135deg,#8A85A6 50%,transparent 50%);background-position:calc(100% - 20px) 19px,calc(100% - 15px) 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:40px}
.textarea{min-height:110px;resize:vertical;line-height:1.7;padding:11px 14px}
.input:focus,.select:focus,.textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(91,61,245,.35);
  background-color:#FBFAFF;
}
.field.has-error .input,.field.has-error .select,.field.has-error .textarea{
  border-color:var(--orange);
  box-shadow:0 0 0 2px rgba(255,138,61,.22);
}
.form-error{font-size:13px;color:var(--orange);min-height:0;display:none}
.field.has-error .form-error{display:block}
.form-success{
  display:none;align-items:center;gap:10px;
  margin-top:16px;padding:13px 16px;
  border-radius:var(--r-sm);
  background:rgba(20,200,176,.14);
  border:1px solid rgba(20,200,176,.5);
  color:#CFFBF3;font-size:14px;
}
.form-success.is-visible{display:flex}
.form-success .tick{
  flex:0 0 20px;width:20px;height:20px;border-radius:50%;
  background:var(--mint);color:#06302B;display:flex;align-items:center;justify-content:center;
}
.form-actions{margin-top:20px;grid-column:1 / -1}
.form-hint{font-size:12.5px;color:rgba(255,255,255,.55);margin-top:12px;line-height:1.7}
@media (max-width:600px){
  .form-grid{grid-template-columns:1fr}
  .form-actions .btn{width:100%}
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  background:var(--grad-dark);
  color:rgba(255,255,255,.72);
  padding:72px 0 28px;
  margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(91,61,245,0) 0%,#5B3DF5 30%,#C13BE8 70%,rgba(193,59,232,0) 100%);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;
}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand strong{display:block;font-size:17px;font-weight:700;color:#fff;letter-spacing:.02em}
.footer-brand small{display:block;font-size:12px;color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:380px}
.footer-contact{margin-top:16px;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.58)}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-links{display:grid;gap:12px}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,.72);
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;
  justify-content:space-between;align-items:center;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:rgba(255,255,255,.55);
}
@media (max-width:560px){.footer-bottom{flex-direction:column;align-items:flex-start}}

/* ============================================================
   返回顶部
   ============================================================ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;color:var(--brand-deep);
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--bg-alt);transform:translateY(-2px)}
@media (max-width:520px){.to-top{right:16px;bottom:16px;width:42px;height:42px}}

/* ============================================================
   滚动渐显
   ============================================================ */
.js-ready .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.js-ready .reveal.is-visible{opacity:1;transform:none}

/* ============================================================
   响应式导航
   ============================================================ */
@media (max-width:1100px){
  .nav-side{gap:20px}
  .nav-link{font-size:14.5px}
}
@media (max-width:900px){
  .nav-side{display:none}
  .header-inner{grid-template-columns:1fr auto;gap:12px}
  .brand{justify-self:start}
  .header-right{justify-self:end;gap:12px}
  .nav-toggle{display:flex}
  .brand-text small{display:none}
  .brand-text strong{font-size:16px}
}
@media (max-width:520px){
  .header-right .btn{display:none}
}