/* roulang page: index */
:root{
  --brand-500:#2FE0C8;
  --brand-600:#1FB9A5;
  --brand-700:#12907F;
  --accent-500:#FFB35C;
  --accent-600:#E2913A;
  --bg-0:#0A1119;
  --bg-1:#0F1A26;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.075);
  --surface-solid:#111D2A;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text-1:#E6EEF7;
  --text-2:#94A6BC;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:22px;
  --shadow-1:0 18px 44px rgba(2,8,16,.5);
  --shadow-2:0 26px 60px rgba(2,8,16,.62);
  --shadow-glow:0 0 0 1px rgba(47,224,200,.35), 0 10px 28px rgba(47,224,200,.28);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:72px;
  --ease:240ms cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-0);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(900px 520px at 12% -8%, rgba(47,224,200,.14), transparent 62%),
    radial-gradient(760px 460px at 92% 6%, rgba(255,179,92,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease),transform var(--ease);}
a:hover{color:var(--brand-500);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5{margin:0;letter-spacing:-.01em;color:var(--text-1);font-weight:700;line-height:1.25;}
h1{font-size:clamp(30px,4vw,48px);}
h2{font-size:clamp(24px,2.6vw,34px);}
h3{font-size:20px;font-weight:600;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,224,200,.3);color:#fff;}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.wrap-hero{max-width:1280px;}
.section{padding:96px 0;position:relative;z-index:1;}
.section-tight{padding:64px 0;}
.section-alt{background:linear-gradient(180deg, rgba(15,26,38,.85), rgba(10,17,25,.2));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head p{margin:10px 0 0;color:var(--text-2);font-size:15px;max-width:620px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--brand-500);text-transform:uppercase;font-weight:600;margin-bottom:14px;}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--accent-500);border-radius:2px;}
.lead{color:var(--text-2);font-size:16px;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:all var(--ease);white-space:nowrap;letter-spacing:0;}
.btn-primary{background:linear-gradient(6deg,var(--brand-600),var(--brand-500));color:#04211E;box-shadow:var(--shadow-glow);}
.btn-primary:hover{color:#04211E;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,200,.5),0 16px 34px rgba(47,224,200,.34);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,200,.35),0 6px 16px rgba(47,224,200,.22);}
.btn-ghost{background:var(--surface);border-color:var(--line-strong);color:var(--brand-500);backdrop-filter:blur(12px);}
.btn-ghost:hover{color:var(--brand-500);border-color:rgba(47,224,200,.5);background:rgba(47,224,200,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-plain{background:none;border:none;color:var(--brand-500);padding:0;height:auto;font-weight:600;}
.btn-plain .arrow{display:inline-block;transition:transform var(--ease);}
.btn-plain:hover .arrow{transform:translateX(5px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- chips / badges ---------- */
.chip{display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--text-2);font-size:14px;font-weight:500;white-space:nowrap;transition:all var(--ease);}
.chip:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(255,255,255,.05);}
.chip.active{color:var(--brand-500);border-color:rgba(47,224,200,.55);background:rgba(47,224,200,.12);}
.badge-chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(47,224,200,.14);color:var(--brand-500);border:1px solid rgba(47,224,200,.22);}
.badge-neutral{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;background:var(--surface);color:var(--text-2);border:1px solid var(--line);}
.badge-accent{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(255,179,92,.14);color:var(--accent-500);border:1px solid rgba(255,179,92,.26);}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(10,17,25,.72);backdrop-filter:blur(16px) saturate(130%);border-bottom:1px solid var(--line);transition:background-color var(--ease),box-shadow var(--ease);}
.site-header.is-scrolled{background:rgba(8,14,21,.92);box-shadow:0 12px 32px rgba(2,8,16,.55);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px;max-width:1280px;margin:0 auto;padding:10px 20px;}
.brand{display:flex;flex-direction:column;line-height:1.1;flex:0 0 auto;}
.brand-mark{font-size:21px;font-weight:700;color:var(--text-1);letter-spacing:-.02em;}
.brand-mark em{font-style:normal;color:var(--brand-500);}
.brand-sub{font-size:11px;letter-spacing:.34em;color:var(--text-2);margin-top:3px;padding-left:2px;}
.nav-chips{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;flex:1 1 auto;padding:4px 2px;}
.nav-chips::-webkit-scrollbar{display:none;}
.header-cta{flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--line);background:var(--surface);color:var(--text-1);align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{display:none;position:fixed;inset:72px 0 0 0;z-index:55;background:rgba(9,15,23,.97);backdrop-filter:blur(18px);padding:28px 20px 40px;overflow-y:auto;}
.mobile-drawer.is-open{display:block;}
.drawer-group{margin-bottom:28px;}
.drawer-title{font-size:12px;letter-spacing:.2em;color:var(--brand-500);margin-bottom:14px;text-transform:uppercase;}
.drawer-list{display:flex;flex-direction:column;gap:10px;}
.drawer-list a{padding:14px 18px;border-radius:14px;border:1px solid var(--line);background:var(--surface);font-size:15px;color:var(--text-1);}
.drawer-list a.active{color:var(--brand-500);border-color:rgba(47,224,200,.5);background:rgba(47,224,200,.1);}

/* ---------- hero ---------- */
.hero{padding:72px 0 64px;position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{margin-bottom:20px;}
.hero h1 .hl{color:var(--brand-500);}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px;}
.hero-points{display:flex;flex-wrap:wrap;gap:12px;}
.point{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface);}
.point i{width:7px;height:7px;border-radius:50%;background:var(--accent-500);display:block;flex:0 0 auto;}
.hero-visual{position:relative;border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow-2);background:var(--surface-solid);aspect-ratio:16/10;}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,17,25,.06),rgba(10,17,25,.62));}
.hero-badge{position:absolute;left:20px;bottom:20px;z-index:2;display:flex;align-items:center;gap:10px;padding:10px 16px;border-radius:999px;background:rgba(9,15,23,.78);border:1px solid rgba(47,224,200,.32);font-size:13px;color:var(--text-1);backdrop-filter:blur(10px);}
.hero-badge b{color:var(--brand-500);font-weight:700;}
.hero-strip{margin-top:56px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-m);overflow:hidden;}
.hero-strip div{background:rgba(15,26,38,.72);padding:20px 22px;}
.hero-strip strong{display:block;font-size:24px;color:var(--brand-500);font-weight:700;font-family:"Inter","DIN Alternate",Arial,sans-serif;letter-spacing:-.01em;}
.hero-strip span{font-size:13px;color:var(--text-2);}

/* ---------- claim band ---------- */
.claim-band{display:grid;grid-template-columns:1.2fr 1fr 1.4fr;gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.claim{padding:38px 32px;position:relative;}
.claim + .claim{border-left:1px solid var(--line);}
.claim::before{content:"";position:absolute;left:32px;top:38px;width:26px;height:3px;border-radius:3px;background:var(--brand-500);}
.claim h3{margin:16px 0 8px;font-size:19px;}
.claim p{color:var(--text-2);font-size:15px;margin:0;}
.claim:nth-child(2)::before{background:var(--accent-500);}
.claim:nth-child(3)::before{background:linear-gradient(90deg,var(--brand-500),var(--accent-500));}

/* ---------- story ---------- */
.story-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.story-row + .story-row{margin-top:88px;}
.story-row.reverse .story-media{order:2;}
.story-media{border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--surface-solid);aspect-ratio:4/3;}
.story-media img{width:100%;height:100%;object-fit:cover;}
.story-body h2{margin-bottom:16px;}
.story-body h3{color:var(--brand-500);margin:22px 0 8px;font-size:17px;}
.story-body p{color:var(--text-2);font-size:15.5px;}
.story-facts{display:flex;gap:32px;flex-wrap:wrap;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);}
.story-facts b{display:block;font-size:22px;color:var(--text-1);font-family:"Inter","DIN Alternate",Arial,sans-serif;}
.story-facts span{font-size:13px;color:var(--text-2);}

/* ---------- feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;}
.feature-card{grid-column:span 2;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);overflow:hidden;box-shadow:var(--shadow-1);backdrop-filter:blur(14px) saturate(120%);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(47,224,200,.4);box-shadow:var(--shadow-2);}
.feature-card.wide{grid-column:span 3;}
.feature-thumb{aspect-ratio:16/9;background:linear-gradient(135deg,rgba(47,224,200,.12),rgba(255,179,92,.08));overflow:hidden;}
.feature-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease;}
.feature-card:hover .feature-thumb img{transform:scale(1.04);}
.feature-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.feature-body h3{font-size:19px;}
.feature-body p{color:var(--text-2);font-size:14.5px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feature-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px;}
.feature-foot time{font-size:13px;color:var(--text-2);}
.link-more{font-size:14px;font-weight:600;color:var(--brand-500);display:inline-flex;align-items:center;gap:6px;}
.link-more .arrow{transition:transform var(--ease);}
.feature-card:hover .link-more .arrow{transform:translateX(4px);}

/* ---------- news list (cms) ---------- */
.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(--radius-m);overflow:hidden;box-shadow:var(--shadow-1);backdrop-filter:blur(14px) saturate(120%);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);}
.news-card:hover{transform:translateY(-4px);border-color:rgba(47,224,200,.42);box-shadow:var(--shadow-2);}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,rgba(47,224,200,.1),rgba(255,179,92,.08));}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease;}
.news-card:hover .news-thumb img{transform:scale(1.05);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a:hover{color:var(--brand-500);}
.news-body p{color:var(--text-2);font-size:14.5px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:10px;border-top:1px solid var(--line);}
.news-meta time{font-size:13px;color:var(--text-2);}
.empty-state{max-width:520px;margin:0 auto;text-align:center;padding:40px 28px;border-radius:var(--radius-m);border:1px solid var(--line);background:var(--surface);backdrop-filter:blur(14px);}
.empty-state svg{margin:0 auto 16px;display:block;stroke:var(--brand-500);}
.empty-state strong{display:block;font-size:17px;margin-bottom:8px;}
.empty-state p{color:var(--text-2);font-size:14.5px;margin-bottom:18px;}

/* ---------- trust ---------- */
.trust-panel{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;background:linear-gradient(135deg,rgba(47,224,200,.07),rgba(255,179,92,.05));border:1px solid var(--line);border-radius:var(--radius-l);padding:44px;box-shadow:var(--shadow-1);}
.metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.metric b{display:block;font-size:34px;font-weight:700;color:var(--brand-500);font-family:"Inter","DIN Alternate",Arial,sans-serif;letter-spacing:-.02em;}
.metric span{font-size:14px;color:var(--text-2);}
.trust-list{display:flex;flex-direction:column;gap:14px;}
.trust-item{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border-radius:var(--radius-m);border:1px solid var(--line);background:rgba(10,17,25,.5);}
.trust-item i{flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--accent-500);margin-top:9px;}
.trust-item p{margin:0;font-size:14.5px;color:var(--text-2);}
.cert-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.cert-row span{padding:10px 18px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:13.5px;color:var(--text-2);}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{background:var(--surface);border:1px solid var(--line)!important;border-radius:var(--radius-m)!important;margin-bottom:12px;overflow:hidden;backdrop-filter:blur(12px);}
.accordion-button{background:transparent!important;color:var(--text-1)!important;font-size:16.5px;font-weight:600;padding:20px 24px 20px 26px;box-shadow:none!important;position:relative;line-height:1.6;}
.accordion-button:hover{color:var(--brand-500)!important;}
.accordion-button::after{display:none;}
.accordion-button::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--brand-500);opacity:0;transition:opacity var(--ease);}
.accordion-button:not(.collapsed)::before{opacity:1;}
.faq-arrow{position:absolute;right:24px;top:50%;transform:translateY(-50%);width:12px;height:12px;border-right:2px solid var(--brand-500);border-bottom:2px solid var(--brand-500);rotate:45deg;transition:rotate var(--ease);}
.accordion-button:not(.collapsed) .faq-arrow{rotate:225deg;}
.accordion-button:not(.collapsed){color:var(--brand-500)!important;}
.accordion-body{padding:0 26px 22px;color:var(--text-2);font-size:15px;}

/* ---------- cta ---------- */
.cta-band{border:1px solid var(--line);border-radius:var(--radius-l);padding:56px 48px;background:
  linear-gradient(rgba(10,17,25,.86),rgba(10,17,25,.92)),
  repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 28px),
  repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 28px),
  linear-gradient(135deg,rgba(47,224,200,.14),rgba(255,179,92,.08));
  box-shadow:var(--shadow-1);text-align:center;}
.cta-band h2{margin-bottom:14px;}
.cta-band p{color:var(--text-2);max-width:600px;margin:0 auto 28px;font-size:15.5px;}
.cta-form{display:flex;gap:12px;max-width:520px;margin:0 auto;flex-wrap:wrap;justify-content:center;}
.form-input{flex:1 1 280px;height:46px;padding:0 20px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line-strong);color:var(--text-1);transition:border-color var(--ease),box-shadow var(--ease);min-width:0;}
.form-input::placeholder{color:rgba(148,166,188,.75);}
.form-input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(47,224,200,.16);}
.form-note{margin-top:16px;font-size:13px;color:var(--text-2);}
.form-alert{display:none;margin:16px auto 0;max-width:520px;padding:12px 18px;border-radius:14px;font-size:14px;border:1px solid rgba(47,224,200,.35);background:rgba(47,224,200,.1);color:var(--brand-500);}
.form-alert.is-visible{display:block;}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(15,26,38,.7),rgba(8,14,21,.96));position:relative;z-index:1;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:72px 0 48px;}
.footer-brand .brand-mark{font-size:22px;}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:16px;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14.5px;color:var(--text-2);display:inline-block;transition:color var(--ease),transform var(--ease);}
.footer-col a:hover{color:var(--brand-500);transform:translateX(2px);}
.footer-note{font-size:14px;color:var(--text-2);line-height:1.9;}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--text-2);}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:var(--text-2);}
.footer-bottom a:hover{color:var(--brand-500);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 620ms ease,transform 620ms ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .section{padding:72px 0;}
  h1{font-size:clamp(28px,3.4vw,40px);}
  .hero-grid{gap:40px;}
  .feature-grid{gap:20px;}
}
@media (max-width:991px){
  .header-inner{min-height:66px;}
  .nav-chips,.header-cta{display:none;}
  .nav-toggle{display:flex;}
  .mobile-drawer{top:66px;}
  .hero{padding:48px 0;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual{order:-1;aspect-ratio:16/9;}
  .hero-strip{grid-template-columns:repeat(2,1fr);}
  .claim-band{grid-template-columns:1fr;}
  .claim + .claim{border-left:none;border-top:1px solid var(--line);}
  .story-row{grid-template-columns:1fr;gap:28px;}
  .story-row.reverse .story-media{order:0;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .feature-card,.feature-card.wide{grid-column:span 1;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .trust-panel{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .wrap{padding:0 16px;}
  .hero h1{font-size:clamp(26px,7vw,34px);}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-strip{grid-template-columns:1fr 1fr;}
  .hero-strip div{padding:16px;}
  .hero-strip strong{font-size:20px;}
  .claim{padding:28px 20px;}
  .claim::before{left:20px;top:28px;}
  .feature-grid,.news-grid{grid-template-columns:1fr;}
  .metric-grid{grid-template-columns:1fr 1fr;gap:20px;}
  .trust-panel{padding:26px 20px;}
  .cta-band{padding:36px 20px;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .accordion-button{padding:18px 46px 18px 20px;font-size:15.5px;}
  .accordion-body{padding:0 20px 20px;}
  .faq-arrow{right:20px;}
}
@media (max-width:480px){
  .brand-mark{font-size:19px;}
  .brand-sub{font-size:10px;letter-spacing:.26em;}
  .metric b{font-size:27px;}
  .story-facts{gap:22px;}
  .cta-band h2{font-size:22px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --brand-500:#2FE0C8;
  --brand-600:#17B7A2;
  --accent-500:#FFB35C;
  --bg-0:#0A1119;
  --bg-1:#0F1A26;
  --surface:rgba(255,255,255,.045);
  --surface-solid:#111E2B;
  --line:rgba(255,255,255,.09);
  --text-1:#E6EEF7;
  --text-2:#94A6BC;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:22px;
  --shadow-1:0 18px 44px rgba(2,8,16,.5);
  --shadow-glow:0 0 0 1px rgba(47,224,200,.35),0 10px 28px rgba(47,224,200,.28);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px;
  --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-num:"Inter","DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:
    radial-gradient(1100px 620px at 12% -10%,rgba(47,224,200,.10),transparent 62%),
    radial-gradient(900px 520px at 92% 4%,rgba(255,179,92,.07),transparent 60%),
    linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 46%,var(--bg-0) 100%);
  background-attachment:fixed;
  min-height:100vh;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 82%);
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 82%);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease,transform .2s ease}
a:hover{color:var(--brand-500)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0 0 var(--sp-4);letter-spacing:-.01em;line-height:1.25;font-weight:700}
h1{font-size:clamp(28px,3.6vw,44px)}
h2{font-size:clamp(22px,2.4vw,32px)}
h3{font-size:20px;font-weight:600}
h4{font-size:17px;font-weight:600}
p{margin:0 0 1.1em}
ul{margin:0 0 1.1em;padding-left:1.1em}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
::selection{background:rgba(47,224,200,.3)}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:2}
.wrap-wide{max-width:1280px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,17,25,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(8,14,21,.92);box-shadow:0 12px 32px rgba(2,8,16,.5)}
.header-inner{
  max-width:1280px;margin:0 auto;padding:12px 20px;
  display:flex;align-items:center;gap:var(--sp-5);flex-wrap:nowrap;
}
.brand{display:flex;align-items:baseline;gap:8px;flex:0 0 auto;white-space:nowrap}
.brand-mark{
  font-size:22px;font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(100deg,#E6EEF7 12%,var(--brand-500) 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.brand-mark em{font-style:normal}
.brand-sub{
  font-size:12px;letter-spacing:.14em;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:2px 9px;line-height:1.5;
}
.nav-chips{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;font-size:14px;line-height:1;padding:10px 16px;border-radius:999px;
  border:1px solid transparent;color:var(--text-2);white-space:nowrap;
}
.chip:hover{color:var(--text-1);border-color:var(--line);background:rgba(255,255,255,.04)}
.chip.active{
  color:var(--brand-500);border-color:rgba(47,224,200,.55);
  background:rgba(47,224,200,.12);font-weight:600;
}
.header-cta{flex:0 0 auto;display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{
  color:#04211D;
  background:linear-gradient(6deg,var(--brand-600),var(--brand-500));
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#04211D;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,200,.5),0 14px 34px rgba(47,224,200,.36)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,200,.4),0 6px 16px rgba(47,224,200,.22)}
.btn-ghost{
  color:var(--brand-500);background:var(--surface);border-color:rgba(47,224,200,.35);
}
.btn-ghost:hover{color:var(--brand-500);background:rgba(47,224,200,.12);transform:translateY(-2px)}
.btn-line{color:var(--text-1);background:var(--surface);border-color:var(--line)}
.btn-line:hover{color:var(--brand-500);border-color:rgba(47,224,200,.45);transform:translateY(-2px)}
.btn-link{
  height:auto;padding:0;color:var(--brand-500);background:none;border:0;
}
.btn-link i{transition:transform .2s ease}
.btn-link:hover i{transform:translateX(5px)}
.nav-toggle{
  display:none;flex:0 0 auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);cursor:pointer;
  padding:0;position:relative;
}
.nav-toggle span{
  display:block;width:18px;height:2px;margin:3px auto;border-radius:2px;
  background:var(--text-1);transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* 文章顶部 */
.page-head{
  position:relative;padding:56px 0 44px;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:"";position:absolute;inset:0;z-index:0;opacity:.32;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 55%,transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0%,#000 55%,transparent 100%);
}
.page-head .wrap{max-width:880px}
.crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:nowrap;
  font-size:13px;color:var(--text-2);margin-bottom:var(--sp-5);
  overflow:hidden;white-space:nowrap;
}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--brand-500)}
.crumbs .sep{color:rgba(255,255,255,.25)}
.crumbs .now{
  color:var(--brand-500);overflow:hidden;text-overflow:ellipsis;
  white-space:nowrap;max-width:340px;
}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:var(--sp-4)}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;line-height:1;
  padding:7px 12px;border-radius:999px;border:1px solid transparent;white-space:nowrap;
}
.badge-brand{color:var(--brand-500);background:rgba(47,224,200,.14);border-color:rgba(47,224,200,.3)}
.badge-accent{color:var(--accent-500);background:rgba(255,179,92,.14);border-color:rgba(255,179,92,.3)}
.badge-soft{color:var(--text-2);background:var(--surface);border-color:var(--line)}
.page-head h1{margin-bottom:var(--sp-5);text-wrap:balance}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  font-size:14px;color:var(--text-2);
}
.meta-row i{color:var(--brand-500);margin-right:6px}

/* 正文 */
.article-section{padding:64px 0 0}
.article-body{
  max-width:800px;margin:0 auto;font-size:16px;line-height:1.92;color:#DCE7F3;
}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  position:relative;margin:2.4em 0 .9em;padding-left:16px;
  font-size:clamp(21px,2.2vw,28px);color:var(--text-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand-500),var(--brand-600));
}
.article-body h3{margin:1.9em 0 .7em;font-size:19px;color:var(--text-1)}
.article-body h4{margin:1.6em 0 .6em;font-size:17px;color:var(--text-1)}
.article-body p{margin:0 0 1.25em}
.article-body a{color:var(--brand-500);border-bottom:1px solid rgba(47,224,200,.4)}
.article-body a:hover{border-bottom-color:var(--brand-500)}
.article-body ul,.article-body ol{padding-left:0;list-style:none;margin:0 0 1.3em}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:.6em}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand-500);box-shadow:0 0 0 4px rgba(47,224,200,.14);
}
.article-body ol{counter-reset:ord}
.article-body ol li::before{
  counter-increment:ord;content:counter(ord);
  position:absolute;left:0;top:.35em;width:20px;height:20px;border-radius:6px;
  font-size:12px;line-height:20px;text-align:center;font-family:var(--font-num);
  color:var(--brand-500);background:rgba(47,224,200,.14);
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--brand-500);
  border-radius:0 var(--radius-s) var(--radius-s) 0;
  background:var(--surface);border-top:1px solid var(--line);
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.6em 0;border:1px solid var(--line)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-2);text-align:center;margin-top:8px}
.article-body pre{
  margin:1.6em 0;padding:18px;border-radius:var(--radius-s);
  background:#060C13;border:1px solid var(--line);overflow-x:auto;
  font-family:var(--font-num);font-size:14px;line-height:1.7;color:#B9E9E0;
}
.article-body code{
  font-family:var(--font-num);font-size:.92em;padding:2px 6px;border-radius:6px;
  background:rgba(47,224,200,.12);color:var(--brand-500);
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.article-body th{background:var(--surface);color:var(--text-1);font-weight:600}

.notice-card{
  max-width:800px;margin:0 auto;padding:34px 28px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  box-shadow:var(--shadow-1);
}
.notice-card i{font-size:30px;color:var(--brand-500);margin-bottom:var(--sp-4);display:block}
.notice-card h2{font-size:22px;margin-bottom:var(--sp-3)}
.notice-card p{color:var(--text-2);margin-bottom:var(--sp-5)}

/* 文末信息 */
.article-foot{max-width:800px;margin:var(--sp-7) auto 0;padding-top:var(--sp-5);border-top:1px solid var(--line)}
.foot-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:var(--sp-5)}
.pager{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  padding:20px 22px;border-radius:var(--radius-m);
  background:var(--surface);border:1px solid var(--line);
}
.pager a{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.pager a:hover{color:var(--brand-500)}

/* 相关推荐 */
.related{padding:var(--sp-8) 0 var(--sp-7)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:var(--sp-5);flex-wrap:wrap;
}
.section-head h2{margin:0}
.section-head .sub{color:var(--text-2);font-size:14px;margin:6px 0 0}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-1);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(47,224,200,.28);box-shadow:0 24px 54px rgba(2,8,16,.6)}
.thumb{
  position:relative;aspect-ratio:16/10;overflow:hidden;
  background:linear-gradient(135deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.post-card:hover .thumb img{transform:scale(1.05)}
.thumb .badge{position:absolute;left:12px;top:12px}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.card-body h3{font-size:17px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;color:var(--text-2);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-2)}
.card-meta .go{color:var(--brand-500);display:inline-flex;align-items:center;gap:6px}
.post-card:hover .go i{transform:translateX(4px)}
.card-meta .go i{transition:transform .2s ease}

/* CTA */
.cta-band{padding:0 0 var(--sp-8)}
.cta-box{
  position:relative;overflow:hidden;text-align:center;
  padding:56px 28px;border-radius:var(--radius-l);
  background:linear-gradient(160deg,rgba(47,224,200,.10),rgba(255,255,255,.03) 55%,rgba(255,179,92,.08));
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.cta-box::before{
  content:"";position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000,transparent 78%);
  mask-image:radial-gradient(circle at 50% 0%,#000,transparent 78%);
}
.cta-box>*{position:relative;z-index:1}
.cta-box h2{margin-bottom:12px}
.cta-box p{color:var(--text-2);max-width:620px;margin:0 auto 26px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:22px}

/* 页脚 */
.site-footer{
  border-top:1px solid var(--line);background:rgba(6,12,18,.66);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  padding:64px 0 26px;margin-top:var(--sp-7);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid var(--line);
}
.footer-brand p{color:var(--text-2);font-size:14px;margin:16px 0 0;max-width:340px}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block}
.footer-col a:hover{color:var(--brand-500);transform:translateX(2px)}
.footer-note{font-size:13px;color:var(--text-2);line-height:2}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:var(--text-2);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--brand-500)}

/* 滚动淡入 */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1199px){
  .wrap{padding:0 20px}
  .header-inner{gap:16px}
}
@media (max-width:991px){
  .nav-toggle{display:block}
  .nav-chips{
    position:fixed;left:0;right:0;top:64px;z-index:55;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:18px 20px 26px;margin:0;
    background:rgba(8,14,21,.97);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height .28s ease,opacity .28s ease;
  }
  .nav-chips.open{max-height:70vh;overflow-y:auto;opacity:1;pointer-events:auto}
  .chip{width:100%;text-align:left;padding:14px 16px;font-size:15px}
  .header-cta .btn{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-head{padding:44px 0 36px}
  .article-section{padding:48px 0 0}
}
@media (max-width:767px){
  body{line-height:1.8}
  .page-head{padding:36px 0 30px}
  .page-head .wrap{max-width:100%}
  .crumbs .now{max-width:180px}
  .article-section{padding:40px 0 0}
  .article-body{font-size:15.5px;line-height:1.9}
  .related{padding:56px 0 40px}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .cta-box{padding:40px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .site-footer{padding:48px 0 22px;margin-top:48px}
  .cta-band{padding-bottom:56px}
}
@media (max-width:480px){
  .wrap{padding:0 16px}
  .brand-sub{display:none}
  .btn{width:100%}
  .cta-actions{flex-direction:column}
  .pager{flex-direction:column}
  h1{font-size:clamp(24px,7vw,30px)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --brand-500:#2FE0C8;
  --brand-600:#17B7A1;
  --accent-500:#FFB35C;
  --bg-0:#0A1119;
  --bg-1:#0F1A26;
  --surface:rgba(255,255,255,.045);
  --surface-solid:#131F2C;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text-1:#E6EEF7;
  --text-2:#94A6BC;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:22px;
  --shadow-1:0 18px 44px rgba(2,8,16,.5);
  --shadow-glow:0 0 0 1px rgba(47,224,200,.35), 0 10px 28px rgba(47,224,200,.28);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px;
  --sp-5:24px; --sp-6:32px; --sp-7:56px; --sp-8:96px;
  --ease:240ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(47,224,200,.10), transparent 60%),
    radial-gradient(760px 460px at 92% 4%, rgba(255,179,92,.08), transparent 62%),
    linear-gradient(180deg,var(--bg-0) 0%, var(--bg-1) 100%);
  background-attachment:fixed;
  color:var(--text-1);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  min-height:100vh;
}
body::before{
  content:"";
  position:fixed; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),transform var(--ease),border-color var(--ease),background-color var(--ease)}
a:hover{color:var(--brand-500)}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0 0 .6em;letter-spacing:-.01em;line-height:1.25;font-weight:700}
h1{font-size:clamp(30px,4vw,46px)}
h2{font-size:clamp(24px,2.6vw,34px)}
h3{font-size:20px;font-weight:600}
h4{font-size:17px;font-weight:600}
time,.num{font-family:Inter,"DIN Alternate","Segoe UI",sans-serif;font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:6px}

.wrap{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:2}
.section{padding:var(--sp-8) 0}
.section-sm{padding:var(--sp-7) 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:var(--sp-4);margin-bottom:var(--sp-6)}
.section-head p{color:var(--text-2);font-size:15px;margin:0;max-width:620px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand-500);letter-spacing:.08em;
  text-transform:none;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-500);opacity:.7}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(6deg,#3BEDD5,#17B7A1);
  color:#04211D;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#052A24;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,200,.5),0 16px 34px rgba(47,224,200,.34)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,200,.35),0 6px 16px rgba(47,224,200,.22)}
.btn-ghost{
  background:var(--surface);border-color:var(--line-strong);color:var(--brand-500);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:rgba(47,224,200,.45);background:rgba(47,224,200,.08)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-500);
}
.link-arrow span{transition:transform var(--ease);display:inline-block}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(10,17,25,.72);
  backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid var(--line);
  transition:background-color var(--ease),box-shadow var(--ease);
}
.site-header.scrolled{background:rgba(8,14,21,.92);box-shadow:0 12px 30px rgba(2,8,16,.55)}
.header-inner{
  max-width:1280px;margin:0 auto;padding:12px 20px;
  display:flex;align-items:center;gap:18px;
}
.brand{display:flex;flex-direction:column;line-height:1.05;flex:0 0 auto}
.brand-mark{font-size:20px;font-weight:700;letter-spacing:.02em}
.brand-mark em{font-style:normal;color:var(--brand-500)}
.brand-sub{font-size:11px;color:var(--text-2);letter-spacing:.34em;margin-top:3px}
.nav-chips{
  display:flex;align-items:center;gap:8px;
  margin-left:auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:2px;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  padding:8px 15px;border-radius:999px;font-size:14px;
  border:1px solid transparent;color:var(--text-2);white-space:nowrap;
}
.chip:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.chip.active{
  color:var(--brand-500);
  background:rgba(47,224,200,.12);
  border-color:rgba(47,224,200,.45);
}
.header-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);
  padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;flex:0 0 auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;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)}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow:hidden;
  font-size:13.5px;color:var(--text-2);margin-bottom:14px;
}
.crumb a{color:var(--text-2);white-space:nowrap}
.crumb a:hover{color:var(--brand-500)}
.crumb .sep{opacity:.5}
.crumb .cur{color:var(--brand-500);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(90deg, rgba(10,17,25,.94) 0%, rgba(10,17,25,.78) 46%, rgba(10,17,25,.52) 100%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle, rgba(47,224,200,.20), transparent 66%);
  pointer-events:none;
}
.cat-hero .wrap{padding-top:56px;padding-bottom:56px}
.cat-hero h1{max-width:820px}
.cat-hero .lede{color:var(--text-2);font-size:16.5px;max-width:640px;margin:0}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:13px;
  background:rgba(47,224,200,.14);color:var(--brand-500);
  border:1px solid rgba(47,224,200,.24);
}
.tag-neutral{background:var(--surface);color:var(--text-2);border-color:var(--line)}
.tag-accent{background:rgba(255,179,92,.14);color:var(--accent-500);border-color:rgba(255,179,92,.28)}

/* ---------- 数据条 ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--radius-l);
  background:var(--surface);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.stat{
  padding:20px 22px;border-right:1px solid var(--line);
}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:28px;font-weight:700;color:var(--brand-500);font-family:Inter,"DIN Alternate",sans-serif;line-height:1.2}
.stat span{font-size:13.5px;color:var(--text-2)}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:2px}
.timeline::before{
  content:"";position:absolute;left:15px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg, rgba(47,224,200,.55), rgba(255,179,92,.28), rgba(255,255,255,.05));
}
.tl-item{position:relative;padding-left:56px;margin-bottom:26px}
.tl-item:last-child{margin-bottom:0}
.tl-dot{
  position:absolute;left:8px;top:22px;width:16px;height:16px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--brand-500);
  box-shadow:0 0 0 5px rgba(47,224,200,.12);
}
.tl-item:nth-child(even) .tl-dot{border-color:var(--accent-500);box-shadow:0 0 0 5px rgba(255,179,92,.10)}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  box-shadow:var(--shadow-1);
  padding:22px 24px;
  backdrop-filter:blur(14px) saturate(120%);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(47,224,200,.25);box-shadow:0 24px 54px rgba(2,8,16,.6)}
.tl-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.tl-step{
  font-size:13px;font-weight:600;color:var(--brand-500);
  background:rgba(47,224,200,.12);border:1px solid rgba(47,224,200,.28);
  border-radius:999px;padding:3px 11px;
}
.tl-meta time{font-size:13px;color:var(--text-2)}
.tl-card h3{margin-bottom:8px}
.tl-card p{color:var(--text-2);font-size:15px;margin-bottom:14px}
.tl-body{display:grid;grid-template-columns:1fr;gap:18px}
.tl-body.has-media{grid-template-columns:minmax(0,1fr) 220px;align-items:start}
.tl-thumb{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-s);border:1px solid var(--line);
  background:rgba(255,255,255,.04);
}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}

/* ---------- 设备差异双列 ---------- */
.duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.duo-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  overflow:hidden;box-shadow:var(--shadow-1);backdrop-filter:blur(14px) saturate(120%);
  transition:transform var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;
}
.duo-card:hover{transform:translateY(-4px);border-color:rgba(47,224,200,.25)}
.duo-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.duo-body{padding:22px 24px}
.duo-body p{color:var(--text-2);font-size:15px;margin-bottom:12px}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  border:1px solid rgba(255,179,92,.26);
  background:linear-gradient(120deg, rgba(255,179,92,.10), rgba(255,255,255,.03));
  border-radius:var(--radius-m);padding:20px 24px;
}
.notice .notice-mark{
  flex:0 0 auto;width:36px;height:36px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,179,92,.4);color:var(--accent-500);font-weight:700;
}
.notice h4{margin-bottom:4px}
.notice p{margin:0;color:var(--text-2);font-size:15px}

/* ---------- FAQ ---------- */
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;--bs-accordion-btn-focus-box-shadow:none}
.accordion-item{
  background:var(--surface);border:1px solid var(--line) !important;
  border-radius:var(--radius-m) !important;margin-bottom:12px;overflow:hidden;
  backdrop-filter:blur(14px) saturate(120%);
  transition:border-color var(--ease);
}
.accordion-item:hover{border-color:rgba(47,224,200,.22) !important}
.accordion-button{
  background:transparent !important;color:var(--text-1) !important;
  font-size:16px;font-weight:600;padding:18px 54px 18px 24px;
  box-shadow:none !important;position:relative;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--brand-500);border-radius:0 3px 3px 0;
  transform:scaleY(0);transform-origin:center;transition:transform var(--ease);
}
.accordion-button:not(.collapsed){color:var(--brand-500) !important}
.accordion-button:not(.collapsed)::before{transform:scaleY(1)}
.accordion-button::after{
  background-image:none !important;
  width:9px;height:9px;border-right:2px solid var(--brand-500);border-bottom:2px solid var(--brand-500);
  transform:rotate(45deg);transition:transform var(--ease);margin-left:auto;position:absolute;right:26px;top:22px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.accordion-body{color:var(--text-2);font-size:15px;padding:0 24px 20px 24px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-l);
  background:
    linear-gradient(180deg, rgba(15,26,38,.92), rgba(10,17,25,.96)),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  padding:56px 40px;text-align:center;box-shadow:var(--shadow-1);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:44px 44px;pointer-events:none;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{margin-bottom:12px}
.cta-band p{color:var(--text-2);max-width:560px;margin:0 auto 26px}
.cta-form{display:flex;gap:12px;justify-content:center;max-width:520px;margin:0 auto;flex-wrap:wrap}
.cta-form input{
  flex:1 1 260px;min-width:0;height:46px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
  color:var(--text-1);padding:0 20px;font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.cta-form input::placeholder{color:#6C7F94}
.cta-form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(47,224,200,.14);background:rgba(255,255,255,.07)}
.form-hint{font-size:13px;color:var(--text-2);margin-top:14px}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(8,14,21,.72);
  padding:56px 0 24px;margin-top:var(--sp-8);
  position:relative;z-index:2;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:14px;max-width:340px}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--text-2);font-size:14.5px;display:inline-block}
.footer-col ul a:hover{color:var(--brand-500);transform:translateX(2px)}
.footer-note{color:var(--text-2);font-size:14px;line-height:1.9;margin:0}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-2);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--brand-500)}

/* ---------- 滚动淡入 ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .header-inner{padding:12px 18px}
  .section{padding:72px 0}
  .cta-band{padding:48px 28px}
}
@media (max-width:991px){
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .nav-chips{
    position:fixed;left:0;right:0;top:69px;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:rgba(9,15,23,.97);backdrop-filter:blur(18px);
    padding:26px 20px;margin-left:0;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    overflow-y:auto;
    transition:opacity var(--ease),transform var(--ease);
  }
  .site-header.nav-open .nav-chips{opacity:1;transform:none;pointer-events:auto}
  .chip{font-size:16px;padding:14px 18px;border-radius:14px;border-color:var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0}
  .tl-body.has-media{grid-template-columns:1fr}
  .duo{grid-template-columns:1fr}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .wrap{padding:0 16px}
  .cat-hero .wrap{padding-top:40px;padding-bottom:40px}
  .cat-hero{background-image:linear-gradient(180deg, rgba(10,17,25,.93), rgba(10,17,25,.86)), url("/assets/images/backpic/back-2.png")}
  .timeline::before{left:8px}
  .tl-item{padding-left:34px}
  .tl-dot{left:1px;top:20px;width:14px;height:14px}
  .tl-card{padding:18px}
  .cta-band{padding:40px 20px}
  .cta-form{flex-direction:column}
  .cta-form input,.cta-form .btn{width:100%;flex:1 1 auto}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  h1{font-size:26px}
  h2{font-size:22px}
  h3{font-size:18px}
  .stat-bar{grid-template-columns:1fr}
  .stat{border-right:0 !important;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .header-cta .btn{width:auto}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --brand-500:#2FE0C8;
  --brand-600:#16b8a4;
  --brand-soft:rgba(47,224,200,.14);
  --accent-500:#FFB35C;
  --accent-soft:rgba(255,179,92,.15);
  --bg-0:#0A1119;
  --bg-1:#0F1A26;
  --surface:rgba(255,255,255,.045);
  --surface-solid:#131f2c;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --text-1:#E6EEF7;
  --text-2:#94A6BC;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:22px;
  --shadow-1:0 18px 44px rgba(2,8,16,.5);
  --shadow-2:0 26px 60px rgba(2,8,16,.62);
  --shadow-glow:0 0 0 1px rgba(47,224,200,.35),0 10px 28px rgba(47,224,200,.28);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px;
  --sp-5:24px; --sp-6:32px; --sp-7:56px; --sp-8:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Inter","DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:
    radial-gradient(1100px 620px at 82% -8%,rgba(47,224,200,.10),transparent 62%),
    radial-gradient(880px 520px at 4% 12%,rgba(255,179,92,.07),transparent 60%),
    linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 55%,var(--bg-0) 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .24s ease,border-color .24s ease,background-color .24s ease,transform .24s ease;}
a:hover{color:var(--brand-500);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0 0 var(--sp-4);font-weight:700;letter-spacing:-.01em;line-height:1.28;color:var(--text-1);}
h1{font-size:clamp(30px,4vw,46px);line-height:1.2;}
h2{font-size:clamp(24px,2.6vw,34px);}
h3{font-size:20px;font-weight:600;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1.2em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,224,200,.3);}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.section{padding:var(--sp-8) 0;position:relative;z-index:1;}
.section-tight{padding:var(--sp-7) 0;position:relative;z-index:1;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:var(--sp-4);margin-bottom:var(--sp-6);}
.section-head p{margin:var(--sp-2) 0 0;color:var(--text-2);font-size:15px;max-width:660px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.16em;color:var(--brand-500);text-transform:uppercase;margin-bottom:var(--sp-3);}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand-500),transparent);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .24s ease,box-shadow .24s ease,background-color .24s ease,border-color .24s ease,color .24s ease;white-space:nowrap;}
.btn-primary{background:linear-gradient(6deg,var(--brand-600),var(--brand-500));color:#04211d;box-shadow:var(--shadow-glow);}
.btn-primary:hover{color:#04211d;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,200,.5),0 16px 34px rgba(47,224,200,.34);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,200,.35),0 6px 16px rgba(47,224,200,.22);}
.btn-ghost{background:rgba(255,255,255,.045);border-color:var(--line);color:var(--brand-500);}
.btn-ghost:hover{border-color:rgba(47,224,200,.45);background:rgba(47,224,200,.08);color:var(--brand-500);transform:translateY(-2px);}
.btn-plain{background:transparent;border-color:transparent;color:var(--text-1);padding:0 6px;}
.btn-plain:hover{color:var(--brand-500);}
.btn-plain .arrow{transition:transform .24s ease;}
.btn-plain:hover .arrow{transform:translateX(5px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,17,25,.72);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:background-color .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{background:rgba(8,14,21,.92);border-bottom-color:var(--line);box-shadow:0 12px 32px rgba(2,8,16,.55);}
.header-inner{
  max-width:1280px;
  margin:0 auto;
  padding:12px 20px;
  display:flex;
  align-items:center;
  gap:var(--sp-5);
}
.brand{display:flex;align-items:baseline;gap:8px;line-height:1.1;flex:0 0 auto;}
.brand-mark{font-size:20px;font-weight:700;letter-spacing:.02em;color:var(--text-1);}
.brand-mark em{font-style:normal;color:var(--brand-500);}
.brand-sub{font-size:12px;color:var(--text-2);letter-spacing:.14em;}
.nav-chips{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;scrollbar-width:none;}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  font-size:14px;color:var(--text-2);border:1px solid transparent;white-space:nowrap;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.chip:hover{color:var(--text-1);background:rgba(255,255,255,.05);border-color:var(--line);}
.chip.active{color:var(--brand-500);background:rgba(47,224,200,.12);border-color:rgba(47,224,200,.42);}
.header-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);cursor:pointer;padding:0 11px;flex:0 0 auto;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text-1);transition:transform .24s ease,opacity .24s ease;}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;
  padding:var(--sp-8) 0 var(--sp-7);
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";
  position:absolute;
  right:-140px;top:-120px;
  width:520px;height:520px;
  background:radial-gradient(circle at center,rgba(47,224,200,.20),transparent 66%);
  transform:rotate(14deg);
  pointer-events:none;
}
.cat-hero .wrap{max-width:1200px;}
.breadcrumb-bar{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2);margin-bottom:var(--sp-5);flex-wrap:wrap;}
.breadcrumb-bar a{color:var(--text-2);}
.breadcrumb-bar a:hover{color:var(--brand-500);}
.breadcrumb-bar .sep{color:rgba(255,255,255,.22);}
.breadcrumb-bar .current{color:var(--brand-500);}
.cat-hero h1{max-width:900px;margin-bottom:var(--sp-4);}
.hero-sub{max-width:720px;color:var(--text-2);font-size:17px;margin-bottom:var(--sp-5);}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;}
.badge-brand,.badge-soft{display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;font-size:13px;}
.badge-brand{background:var(--brand-soft);color:var(--brand-500);border:1px solid rgba(47,224,200,.28);}
.badge-soft{background:rgba(255,255,255,.05);color:var(--text-2);border:1px solid var(--line);}
.badge-accent{display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;font-size:13px;background:var(--accent-soft);color:var(--accent-500);border:1px solid rgba(255,179,92,.3);}

/* ---------- 交替图文行 ---------- */
.alt-list{display:flex;flex-direction:column;gap:var(--sp-7);}
.alt-row{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:var(--sp-6);
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  padding:var(--sp-5);
  box-shadow:var(--shadow-1);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.alt-row:hover{border-color:rgba(47,224,200,.28);transform:translateY(-4px);box-shadow:var(--shadow-2);}
.alt-row:nth-child(even) .alt-media{order:2;}
.alt-media{
  position:relative;
  border-radius:var(--radius-m);
  overflow:hidden;
  border:1px solid var(--line-strong);
  aspect-ratio:16/10;
  background:linear-gradient(140deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
}
.alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.alt-row:hover .alt-media img{transform:scale(1.04);}
.alt-media .idx{
  position:absolute;left:14px;top:14px;
  font-family:var(--font-num);
  font-size:13px;letter-spacing:.12em;
  padding:5px 12px;border-radius:999px;
  background:rgba(10,17,25,.72);
  border:1px solid var(--line-strong);
  color:var(--brand-500);
}
.alt-body{padding:var(--sp-3) var(--sp-3) var(--sp-3) var(--sp-2);}
.alt-body p{color:var(--text-2);margin-bottom:var(--sp-4);}
.point-list{display:flex;flex-direction:column;gap:10px;margin-bottom:var(--sp-5);}
.point-list li{display:flex;gap:10px;font-size:15px;color:var(--text-1);align-items:flex-start;}
.point-list li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:50%;
  background:var(--brand-500);box-shadow:0 0 0 4px rgba(47,224,200,.14);
}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--sp-5);
  padding:var(--sp-5) var(--sp-5);
  border-radius:var(--radius-l);
  border:1px solid var(--line);
  background:
    linear-gradient(100deg,rgba(47,224,200,.08),rgba(255,179,92,.06) 62%,transparent),
    rgba(255,255,255,.035);
}
.stat-item{position:relative;padding-left:var(--sp-4);}
.stat-item::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--brand-500),rgba(47,224,200,0));}
.stat-num{font-family:var(--font-num);font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--brand-500);line-height:1.2;}
.stat-label{font-size:14px;color:var(--text-2);}

/* ---------- 节奏说明 ---------- */
.rhythm{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--sp-4);
}
.rhythm-row{
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:var(--surface);
  padding:var(--sp-5);
  transition:border-color .24s ease,transform .24s ease;
}
.rhythm-row:hover{border-color:rgba(255,179,92,.35);transform:translateY(-3px);}
.rhythm-row .tag{font-family:var(--font-num);font-size:13px;color:var(--accent-500);letter-spacing:.1em;}
.rhythm-row h4{margin:10px 0 8px;}
.rhythm-row p{margin:0;color:var(--text-2);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{
  position:relative;
  padding-left:18px;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:var(--surface);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  overflow:hidden;
  transition:border-color .24s ease,background-color .24s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:transparent;transition:background-color .24s ease;
}
.faq-item:has(.collapse.show){border-color:rgba(47,224,200,.28);background:rgba(47,224,200,.05);}
.faq-item:has(.collapse.show)::before{background:var(--brand-500);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);
  background:transparent;border:0;color:var(--text-1);text-align:left;
  padding:18px 22px;font-size:16px;font-weight:600;cursor:pointer;
}
.faq-q:hover{color:var(--brand-500);}
.faq-arrow{
  flex:0 0 auto;width:9px;height:9px;
  border-right:2px solid var(--brand-500);
  border-bottom:2px solid var(--brand-500);
  transform:rotate(45deg);transition:transform .24s ease;
}
.faq-q[aria-expanded="false"] .faq-arrow{transform:rotate(-45deg);}
.faq-a{padding:0 22px 20px;color:var(--text-2);font-size:15px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  padding:var(--sp-7) var(--sp-6);
  background:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px) 0 0/48px 48px,
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px) 0 0/48px 48px,
    linear-gradient(120deg,rgba(47,224,200,.12),rgba(255,179,92,.08) 60%,rgba(10,17,25,.2));
  box-shadow:var(--shadow-1);
}
.cta-band h2{max-width:640px;}
.cta-band p{color:var(--text-2);max-width:640px;margin-bottom:var(--sp-5);}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;max-width:560px;}
.cta-form input{
  flex:1 1 260px;
  height:46px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.05);
  color:var(--text-1);
  font-size:15px;
}
.cta-form input::placeholder{color:rgba(148,166,188,.75);}
.cta-form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(47,224,200,.14);}
.form-hint{font-size:13px;color:var(--text-2);margin-top:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(8,14,21,.7);
  padding-top:var(--sp-7);
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.55fr 1fr 1fr 1.15fr;
  gap:var(--sp-6);
  padding-bottom:var(--sp-6);
}
.footer-brand .brand{margin-bottom:var(--sp-4);}
.footer-brand p{color:var(--text-2);font-size:14px;max-width:380px;margin:0;}
.footer-col h4{font-size:15px;margin-bottom:var(--sp-4);color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;}
.footer-col a:hover{color:var(--brand-500);transform:translateX(2px);}
.footer-note{font-size:14px;color:var(--text-2);line-height:2;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-2);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom a{font-size:13px;color:var(--text-2);}
.footer-bottom a:hover{color:var(--brand-500);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .section{padding:72px 0;}
  .alt-row{gap:var(--sp-5);}
}
@media (max-width:991px){
  .header-inner{flex-wrap:wrap;row-gap:10px;}
  .nav-chips{order:3;width:100%;margin-left:0;flex-wrap:nowrap;padding-bottom:4px;}
  .header-cta{display:none;}
  .section{padding:64px 0;}
  .alt-row{grid-template-columns:1fr;}
  .alt-row:nth-child(even) .alt-media{order:0;}
  .alt-body{padding:var(--sp-3) var(--sp-2) var(--sp-2);}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .rhythm{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1/-1;}
}
@media (max-width:767px){
  body{line-height:1.8;}
  .wrap{padding:0 16px;}
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-chips{
    position:fixed;
    top:0;right:0;
    height:100vh;width:min(90vw,380px);
    margin:0;padding:96px 24px 32px;
    flex-direction:column;align-items:stretch;gap:10px;
    background:rgba(9,15,23,.96);
    backdrop-filter:blur(18px) saturate(120%);
    -webkit-backdrop-filter:blur(18px) saturate(120%);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .3s ease;
    overflow-y:auto;
    z-index:70;
  }
  .nav-chips.open{transform:translateX(0);}
  .chip{height:46px;font-size:15px;justify-content:flex-start;padding:0 18px;}
  .section,.section-tight{padding:56px 0;}
  .cat-hero{padding:56px 0 48px;}
  .stat-strip{grid-template-columns:1fr;gap:var(--sp-4);padding:var(--sp-5);}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-5);}
  .cta-band{padding:var(--sp-6) var(--sp-5);}
  .cta-form .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .alt-row{padding:var(--sp-4);}
}
@media (max-width:480px){
  h1{font-size:26px;}
  h2{font-size:22px;}
  .hero-sub{font-size:15px;}
  .btn{width:100%;height:46px;}
  .breadcrumb-bar{font-size:12px;}
  .faq-q{font-size:15px;padding:16px 16px;}
  .faq-a{padding:0 16px 18px;}
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .site-header,.faq-item,.alt-row{background-color:var(--surface-solid);}
  .nav-chips{background-color:var(--surface-solid);}
}

/* roulang page: category4 */
:root{
  --brand-500:#2FE0C8;
  --brand-600:#17B8A6;
  --accent-500:#FFB35C;
  --bg-0:#0A1119;
  --bg-1:#0F1A26;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text-1:#E6EEF7;
  --text-2:#94A6BC;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:22px;
  --shadow-1:0 18px 44px rgba(2,8,16,.5);
  --shadow-glow:0 0 0 1px rgba(47,224,200,.35),0 10px 28px rgba(47,224,200,.28);
  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 60% 10%,rgba(0,0,0,.9),transparent 78%);
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--brand-500);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700;color:var(--text-1);}
h1{font-size:clamp(30px,4vw,48px);line-height:1.2;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.28;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.45;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:6px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.wrap-wide{max-width:1280px;}
.section{padding:var(--sp-8) 0;position:relative;z-index:1;}
.section-sm{padding:var(--sp-7) 0;position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;
  color:var(--brand-500);
  text-transform:uppercase;
  font-family:var(--font-num);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-500);display:inline-block;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head p{color:var(--text-2);margin:8px 0 0;max-width:640px;font-size:15px;}
.link-more{color:var(--brand-500);font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.link-more::after{content:"→";transition:transform .24s ease;}
.link-more:hover::after{transform:translateX(4px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,17,25,.78);
  backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{background:rgba(8,14,21,.94);border-bottom-color:var(--line-strong);}
.header-inner{
  max-width:1280px;margin:0 auto;padding:14px 20px;
  display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:baseline;gap:8px;flex:0 0 auto;}
.brand-mark{font-size:21px;font-weight:700;letter-spacing:.02em;color:var(--text-1);}
.brand-mark em{font-style:normal;color:var(--brand-500);}
.brand-sub{
  font-size:12px;color:var(--text-2);letter-spacing:.14em;
  border-left:1px solid var(--line-strong);padding-left:8px;
}
.nav-chips{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;scrollbar-width:none;
  flex:1 1 auto;min-width:0;
  padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  font-size:14px;line-height:1;
  padding:10px 16px;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--text-2);
  white-space:nowrap;
  transition:all .22s ease;
}
.chip:hover{color:var(--text-1);border-color:var(--line-strong);background:var(--surface);}
.chip.active{
  color:var(--brand-500);
  background:rgba(47,224,200,.12);
  border-color:rgba(47,224,200,.45);
  font-weight:600;
}
.header-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;flex:0 0 auto;
  width:44px;height:44px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);
  padding:0;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text-1);transition:transform .26s ease,opacity .26s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;
  border-radius:999px;
  font-size:15px;font-weight:600;font-family:var(--font-cn);
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(6deg,var(--brand-500),var(--brand-600));
  color:#04211D;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#04211D;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,200,.5),0 16px 34px rgba(47,224,200,.4);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,200,.4),0 6px 14px rgba(47,224,200,.24);}
.btn-ghost{
  background:transparent;color:var(--brand-500);
  border-color:rgba(47,224,200,.35);
}
.btn-ghost:hover{color:var(--brand-500);background:rgba(47,224,200,.09);border-color:rgba(47,224,200,.6);transform:translateY(-2px);}
.btn-glass{
  background:var(--surface);color:var(--text-1);border-color:var(--line-strong);
}
.btn-glass:hover{color:var(--text-1);border-color:rgba(47,224,200,.45);transform:translateY(-2px);}

/* ---------- 玻璃卡片 ---------- */
.glass{
  background:var(--surface);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  box-shadow:var(--shadow-1);
}
@supports not (backdrop-filter:blur(4px)){
  .glass{background:#131E2B;}
  .site-header{background:#0B131C;}
}
.badge-pill{
  display:inline-flex;align-items:center;
  font-size:13px;line-height:1;
  padding:7px 13px;border-radius:999px;
  background:rgba(47,224,200,.14);color:var(--brand-500);
  font-weight:600;
}
.badge-soft{
  display:inline-flex;align-items:center;
  font-size:13px;line-height:1;
  padding:7px 13px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  color:var(--text-2);
}
.badge-accent{
  display:inline-flex;align-items:center;
  font-size:13px;line-height:1;
  padding:7px 13px;border-radius:999px;
  background:rgba(255,179,92,.14);color:var(--accent-500);font-weight:600;
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;}
.crumb{
  display:flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--text-2);
  flex-wrap:nowrap;overflow:hidden;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand-500);}
.crumb .sep{opacity:.5;}
.crumb .now{color:var(--brand-500);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* ---------- 分类 Hero ---------- */
.cat-hero{padding:34px 0 var(--sp-7);position:relative;z-index:1;}
.cat-hero-grid{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:44px;align-items:center;
}
.cat-hero h1{margin:14px 0 16px;}
.cat-hero h1 em{font-style:normal;color:var(--brand-500);}
.cat-hero .lead{color:var(--text-2);font-size:17px;max-width:600px;margin-bottom:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.hero-points span{
  font-size:13.5px;color:var(--text-1);
  padding:8px 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
}
.cat-hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-media{
  position:relative;border-radius:var(--radius-l);overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-1);
  aspect-ratio:4/3;
  background:linear-gradient(160deg,#101C29,#0A1119);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,17,25,0) 45%,rgba(10,17,25,.72));
}
.hero-float{
  position:absolute;left:18px;bottom:18px;right:18px;
  display:flex;justify-content:space-between;align-items:flex-end;gap:14px;
  z-index:2;
}
.hero-float .k{font-size:22px;font-weight:700;font-family:var(--font-num);color:var(--brand-500);line-height:1.2;}
.hero-float .v{font-size:13px;color:var(--text-2);}

/* ---------- 数据条 ---------- */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-m);
  overflow:hidden;margin-top:var(--sp-6);
}
.stats-band .stat{background:rgba(15,26,38,.86);padding:24px 22px;}
.stat .num{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--text-1);line-height:1.1;}
.stat .num em{font-style:normal;color:var(--accent-500);font-size:18px;margin-left:2px;}
.stat .lbl{font-size:13.5px;color:var(--text-2);margin-top:8px;}

/* ---------- 步骤条 ---------- */
.steps{position:relative;margin-top:8px;}
.steps::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,rgba(47,224,200,.7),rgba(47,224,200,.06));
}
.step{
  position:relative;padding:0 0 30px 62px;
}
.step:last-child{padding-bottom:0;}
.step-num{
  position:absolute;left:0;top:0;
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:14px;font-weight:700;
  color:var(--brand-500);
  background:#0E1A26;
  border:1px solid rgba(47,224,200,.4);
  box-shadow:0 0 0 6px rgba(10,17,25,.9);
}
.step-card{
  padding:20px 22px;
  border-radius:var(--radius-m);
  background:var(--surface);border:1px solid var(--line);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.step-card:hover{border-color:rgba(47,224,200,.35);transform:translateY(-4px);box-shadow:var(--shadow-1);}
.step-card h3{margin-bottom:8px;}
.step-card p{color:var(--text-2);font-size:15px;margin:0;}

/* ---------- 权益卡 ---------- */
.perk-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.perk-card{
  position:relative;padding:26px 24px;
  border-radius:var(--radius-l);
  background:var(--surface);border:1px solid var(--line);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
  overflow:hidden;
}
.perk-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--brand-500),transparent);
  opacity:.7;
}
.perk-card:hover{border-color:rgba(47,224,200,.35);transform:translateY(-4px);box-shadow:var(--shadow-1);}
.perk-card h3{margin:14px 0 10px;}
.perk-card p{color:var(--text-2);font-size:15px;margin-bottom:16px;}
.perk-meta{display:flex;gap:10px;flex-wrap:wrap;}

/* ---------- 排期提示区 ---------- */
.schedule{
  position:relative;border-radius:var(--radius-l);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(15,26,38,.96),rgba(10,17,25,.9));
}
.schedule-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.16;
}
.schedule-inner{position:relative;z-index:2;padding:44px 40px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center;}
.schedule-inner h2{margin-bottom:14px;}
.schedule-inner p{color:var(--text-2);font-size:15px;}
.schedule-list{display:grid;gap:12px;}
.schedule-list li{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 18px;border-radius:var(--radius-s);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:14.5px;
}
.schedule-list .t{color:var(--text-2);font-family:var(--font-num);font-size:13.5px;white-space:nowrap;}

/* ---------- FAQ 手风琴 ---------- */
.faq-list{display:grid;gap:12px;}
.acc-item{
  border-radius:var(--radius-m);
  background:var(--surface);border:1px solid var(--line);
  overflow:hidden;
  transition:border-color .24s ease,background .24s ease;
}
.acc-item:hover{border-color:rgba(47,224,200,.28);}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;text-align:left;
  background:transparent;border:0;border-left:3px solid transparent;
  color:var(--text-1);font-size:16.5px;font-weight:600;font-family:var(--font-cn);
  cursor:pointer;transition:border-color .24s ease,color .24s ease;
}
.acc-head:hover{color:var(--brand-500);}
.acc-head[aria-expanded="true"]{border-left-color:var(--brand-500);color:var(--brand-500);}
.acc-arrow{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,224,200,.1);color:var(--brand-500);font-size:12px;
  transition:transform .3s ease,background .3s ease;
}
.acc-head[aria-expanded="true"] .acc-arrow{transform:rotate(180deg);background:rgba(47,224,200,.2);}
.acc-body{padding:0 22px 22px 25px;color:var(--text-2);font-size:15px;max-width:900px;}

/* ---------- 标签云 ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px;}
.tag-cloud a{
  font-size:14px;padding:10px 18px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  color:var(--text-2);
  transition:all .22s ease;
}
.tag-cloud a:hover{
  color:var(--brand-500);border-color:rgba(47,224,200,.45);
  background:rgba(47,224,200,.09);transform:translateY(-2px);
}

/* ---------- CTA ---------- */
.cta-box{
  position:relative;border-radius:var(--radius-l);
  padding:52px 44px;
  background:linear-gradient(140deg,rgba(15,26,38,.98),rgba(10,17,25,.94));
  border:1px solid var(--line-strong);
  overflow:hidden;
  text-align:center;
}
.cta-box::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(47,224,200,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,224,200,.06) 1px,transparent 1px);
  background-size:36px 36px;
  mask-image:radial-gradient(circle at 50% 40%,#000,transparent 70%);
}
.cta-box > *{position:relative;z-index:2;}
.cta-box h2{margin-bottom:12px;}
.cta-box p{color:var(--text-2);max-width:640px;margin:0 auto 28px;}
.cta-form{
  display:flex;gap:12px;justify-content:center;flex-wrap:wrap;
  max-width:560px;margin:0 auto;
}
.cta-form input{
  flex:1 1 260px;height:46px;padding:0 20px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);
  color:var(--text-1);font-size:15px;font-family:var(--font-cn);
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.cta-form input::placeholder{color:#6B7C90;}
.cta-form input:focus{
  outline:none;border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(47,224,200,.14);
  background:rgba(255,255,255,.07);
}
.cta-form input.is-error{border-color:var(--accent-500);box-shadow:0 0 0 4px rgba(255,179,92,.14);}
.form-hint{font-size:13.5px;color:var(--text-2);margin-top:14px;}
.form-hint.err{color:var(--accent-500);}
.form-hint.ok{color:var(--brand-500);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sp-8);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(15,26,38,.6),rgba(10,17,25,.98));
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:36px;
  padding:58px 0 34px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.9;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:var(--brand-500);transform:translateX(2px);}
.footer-note{font-size:13.5px;color:var(--text-2);line-height:2;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-2);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{font-size:12.5px;color:var(--text-2);}
.footer-bottom a:hover{color:var(--brand-500);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sp-8:78px;--sp-7:40px;}
  .header-inner{gap:18px;}
  .cat-hero-grid{gap:32px;}
  .schedule-inner{padding:38px 32px;gap:28px;}
}
@media (max-width:991px){
  :root{--sp-8:72px;}
  .nav-chips{order:3;flex-basis:100%;}
  .header-inner{flex-wrap:wrap;padding:12px 16px;}
  .header-cta{margin-left:auto;}
  .nav-toggle{display:flex;}
  .nav-chips{
    display:none;
    position:fixed;inset:64px 0 0 0;
    background:rgba(8,14,21,.96);
    backdrop-filter:blur(18px);
    flex-direction:column;align-items:flex-start;
    gap:6px;padding:28px 22px;
    overflow-y:auto;
  }
  .nav-chips.is-open{display:flex;}
  .nav-chips .chip{width:100%;padding:16px 18px;font-size:16px;border-radius:14px;border-color:var(--line);}
  .cat-hero-grid{grid-template-columns:1fr;}
  .hero-media{order:2;aspect-ratio:16/10;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .perk-grid{gap:18px;}
  .schedule-inner{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1/-1;}
}
@media (max-width:767px){
  :root{--sp-8:56px;--sp-7:34px;}
  .wrap{padding:0 16px;}
  .header-cta .btn{height:38px;padding:0 14px;font-size:13.5px;}
  .cat-hero{padding:24px 0 var(--sp-7);}
  .cat-hero .lead{font-size:15.5px;}
  .stats-band{grid-template-columns:1fr 1fr;}
  .stat .num{font-size:26px;}
  .perk-grid{grid-template-columns:1fr;}
  .step{padding-left:54px;}
  .cta-box{padding:38px 22px;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:42px 0 26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .schedule-inner{padding:28px 20px;}
  .schedule-list li{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:480px){
  h1{font-size:28px;}
  h2{font-size:23px;}
  .brand-sub{display:none;}
  .hero-points span{font-size:13px;}
  .badge-pill,.badge-soft,.badge-accent{font-size:12.5px;}
  .step-card{padding:16px 16px;}
  .acc-head{font-size:15.5px;padding:16px 16px;}
  .acc-body{padding:0 16px 18px 19px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
/* ===================== 设计变量 ===================== */
:root{
  --brand-500:#2FE0C8;
  --brand-600:#16A99A;
  --accent-500:#FFB35C;
  --bg-0:#0A1119;
  --bg-1:#0F1A26;
  --surface:rgba(255,255,255,.045);
  --surface-strong:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --text-1:#E6EEF7;
  --text-2:#94A6BC;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:22px;
  --shadow-1:0 18px 44px rgba(2,8,16,.5);
  --shadow-2:0 28px 64px rgba(2,8,16,.62);
  --shadow-glow:0 10px 28px rgba(47,224,200,.28);
  --shadow-glow-strong:0 16px 38px rgba(47,224,200,.38);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px;
  --sp-5:32px; --sp-6:48px; --sp-7:72px; --sp-8:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Helvetica Neue",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate","SF Pro Display",var(--font-cn);
}
/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
  background-image:
    radial-gradient(900px 520px at 12% -8%, rgba(47,224,200,.10), transparent 62%),
    radial-gradient(760px 460px at 96% 4%, rgba(255,179,92,.08), transparent 60%),
    linear-gradient(180deg,var(--bg-0) 0%, var(--bg-1) 100%);
  background-attachment:fixed;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--brand-500);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{letter-spacing:-.01em;font-weight:700;line-height:1.25;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:4px;}
::selection{background:rgba(47,224,200,.28);color:#fff;}
/* 网格底纹 */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(1200px 700px at 50% 0%,#000 15%,transparent 78%);
  -webkit-mask-image:radial-gradient(1200px 700px at 50% 0%,#000 15%,transparent 78%);
  opacity:.7;
}
header,main,footer{position:relative;z-index:1;}
/* ===================== 容器 ===================== */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);}
.section-head p{color:var(--text-2);font-size:15px;max-width:620px;margin-top:10px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand-500);letter-spacing:.08em;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--brand-500),transparent);}
/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform .24s ease,box-shadow .24s ease,background .24s ease,border-color .24s ease,color .24s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(6deg,var(--brand-500),var(--brand-600));
  color:#04211d;
  box-shadow:0 0 0 1px rgba(47,224,200,.35), var(--shadow-glow);
}
.btn-primary:hover{
  transform:translateY(-2px);color:#04211d;
  box-shadow:0 0 0 1px rgba(47,224,200,.5), var(--shadow-glow-strong);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,200,.4),0 4px 12px rgba(47,224,200,.22);}
.btn-ghost{
  background:var(--surface);border-color:var(--line-strong);color:var(--brand-500);
}
.btn-ghost:hover{background:rgba(47,224,200,.10);border-color:rgba(47,224,200,.42);color:var(--brand-500);transform:translateY(-2px);}
.btn-quiet{color:var(--text-1);padding:0;height:auto;font-weight:600;}
.btn-quiet .arw{transition:transform .24s ease;}
.btn-quiet:hover{color:var(--brand-500);}
.btn-quiet:hover .arw{transform:translateX(4px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
/* ===================== 头部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,17,25,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:rgba(8,14,21,.94);box-shadow:0 12px 32px rgba(2,8,16,.55);}
.header-inner{
  max-width:1200px;margin:0 auto;padding:12px 20px;
  display:flex;align-items:center;gap:18px;
}
.brand{display:flex;align-items:baseline;gap:8px;flex:0 0 auto;}
.brand-mark{
  font-family:var(--font-cn);font-size:22px;font-weight:700;letter-spacing:-.02em;color:var(--text-1);
}
.brand-mark em{font-style:normal;color:var(--brand-500);}
.brand-sub{
  font-size:12px;color:var(--text-2);letter-spacing:.14em;
  padding-left:8px;border-left:1px solid var(--line-strong);
}
.nav-chips{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:4px 0;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;padding:7px 14px;border-radius:999px;font-size:14px;font-weight:500;
  color:var(--text-2);border:1px solid transparent;background:transparent;
  transition:all .22s ease;white-space:nowrap;
}
.chip:hover{color:var(--text-1);border-color:var(--line-strong);background:var(--surface);}
.chip.active{
  color:var(--brand-500);background:rgba(47,224,200,.12);
  border-color:rgba(47,224,200,.42);font-weight:600;
}
.header-cta{flex:0 0 auto;display:flex;align-items:center;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:var(--surface);flex-direction:column;justify-content:center;align-items:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .25s ease,opacity .25s 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);}
/* ===================== 分类 Hero ===================== */
.cat-hero{padding:56px 0 48px;position:relative;overflow:hidden;}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-60px;width:520px;height:320px;
  background:linear-gradient(120deg,rgba(47,224,200,.16),rgba(255,179,92,.10));
  clip-path:polygon(22% 0,100% 0,100% 100%,0 100%);
  filter:blur(6px);opacity:.55;pointer-events:none;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:22px;}
.crumbs a{padding:4px 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);transition:all .22s ease;}
.crumbs a:hover{border-color:rgba(47,224,200,.42);color:var(--brand-500);}
.crumbs .sep{opacity:.5;}
.crumbs .now{color:var(--brand-500);font-weight:600;max-width:62%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.cat-hero h1{font-size:clamp(30px,4vw,46px);max-width:900px;}
.cat-hero h1 .hl{color:var(--brand-500);}
.cat-hero .lead{margin-top:18px;max-width:680px;color:var(--text-2);font-size:17px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.point-pill{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-1);
  padding:8px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--line);
}
.point-pill i{width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:block;}
/* ===================== 大图卡 ===================== */
.feature-card{
  display:grid;grid-template-columns:1.15fr 1fr;gap:0;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);border-radius:var(--radius-l);
  box-shadow:var(--shadow-2);overflow:hidden;
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.feature-card:hover{border-color:rgba(47,224,200,.28);transform:translateY(-4px);box-shadow:0 34px 72px rgba(2,8,16,.7);}
.feature-media{position:relative;min-height:360px;background:linear-gradient(160deg,rgba(47,224,200,.14),rgba(255,179,92,.08));}
.feature-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.feature-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,17,25,.06),rgba(10,17,25,.5));}
.feature-body{padding:38px 34px;display:flex;flex-direction:column;gap:18px;}
.feature-body h2{font-size:clamp(22px,2.2vw,30px);}
.feature-body p{color:var(--text-2);font-size:15px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:13px;padding:5px 12px;border-radius:999px;
  background:rgba(47,224,200,.14);color:var(--brand-500);border:1px solid rgba(47,224,200,.24);
}
.tag.neutral{background:var(--surface);color:var(--text-2);border-color:var(--line);}
.tag.warm{background:rgba(255,179,92,.14);color:var(--accent-500);border-color:rgba(255,179,92,.26);}
.feature-actions{margin-top:auto;display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
/* ===================== 锚点目录 + 双列杂志 ===================== */
.layout-with-toc{display:grid;grid-template-columns:236px minmax(0,1fr);gap:44px;align-items:start;}
.toc{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);
  padding:22px 20px;box-shadow:var(--shadow-1);
}
.toc h3{font-size:14px;color:var(--text-2);font-weight:600;letter-spacing:.06em;margin-bottom:14px;}
.toc a{
  display:block;font-size:14px;color:var(--text-2);padding:9px 12px;border-radius:var(--radius-s);
  border-left:2px solid transparent;transition:all .22s ease;
}
.toc a:hover{color:var(--text-1);background:var(--surface-strong);border-left-color:rgba(47,224,200,.4);}
.toc a.is-current{color:var(--brand-500);background:rgba(47,224,200,.1);border-left-color:var(--brand-500);font-weight:600;}
.mag-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.mag-card{
  background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:var(--radius-m);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.mag-card:hover{border-color:rgba(47,224,200,.28);transform:translateY(-4px);box-shadow:0 26px 56px rgba(2,8,16,.6);}
.mag-card .media{position:relative;aspect-ratio:16/10;background:linear-gradient(150deg,rgba(47,224,200,.12),rgba(255,179,92,.08));}
.mag-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.mag-card:hover .media img{transform:scale(1.05);}
.mag-card .body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.mag-card h3{font-size:19px;}
.mag-card p{color:var(--text-2);font-size:14.5px;}
.mag-card .meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-2);}
.mag-card .meta .arw{transition:transform .24s ease;}
.mag-card:hover .meta .arw{transform:translateX(4px);color:var(--brand-500);}
/* ===================== 检查清单 ===================== */
.check-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:34px 32px;box-shadow:var(--shadow-1);
}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 28px;margin-top:22px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-1);padding:12px 0;border-bottom:1px dashed var(--line);}
.check-list li span.num{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  font-family:var(--font-num);font-size:12px;font-weight:700;color:#04211d;
  background:linear-gradient(6deg,var(--brand-500),var(--brand-600));
}
.check-list li em{font-style:normal;color:var(--text-2);display:block;font-size:13.5px;}
/* ===================== 数据条 ===================== */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-l);overflow:hidden;
}
.stat{background:rgba(12,20,29,.86);padding:26px 22px;}
.stat b{display:block;font-family:var(--font-num);font-size:30px;color:var(--brand-500);letter-spacing:-.02em;}
.stat span{display:block;color:var(--text-2);font-size:13.5px;margin-top:6px;}
/* ===================== FAQ ===================== */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-m);background:rgba(255,255,255,.04);
  overflow:hidden;transition:border-color .24s ease,background .24s ease;
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text-1);
  position:relative;
}
.faq-btn::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand-500);opacity:0;transition:opacity .24s ease;
}
.faq-btn[aria-expanded="true"]{color:var(--brand-500);}
.faq-btn[aria-expanded="true"]::before{opacity:1;}
.faq-arrow{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .28s ease;
}
.faq-arrow::before,.faq-arrow::after{
  content:"";position:absolute;top:50%;left:50%;width:10px;height:2px;border-radius:2px;background:currentColor;
}
.faq-arrow::before{transform:translate(-70%,-50%) rotate(45deg);}
.faq-arrow::after{transform:translate(-30%,-50%) rotate(-45deg);}
.faq-btn[aria-expanded="true"] .faq-arrow{transform:rotate(180deg);}
.faq-body{padding:0 22px 22px;color:var(--text-2);font-size:15px;}
/* ===================== CTA ===================== */
.cta-band{
  border:1px solid var(--line);border-radius:var(--radius-l);padding:52px 44px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02)),
    radial-gradient(600px 300px at 88% 12%,rgba(47,224,200,.16),transparent 62%),
    linear-gradient(180deg,var(--bg-1),var(--bg-0));
  box-shadow:var(--shadow-2);
  display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:36px 36px;opacity:.6;
}
.cta-band > *{position:relative;}
.cta-band h2{font-size:clamp(22px,2.4vw,32px);}
.cta-band p{color:var(--text-2);margin-top:12px;font-size:15px;}
.subscribe{display:flex;gap:12px;flex-wrap:wrap;}
.subscribe input{
  flex:1 1 220px;height:46px;border-radius:12px;padding:0 16px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);color:var(--text-1);
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.subscribe input::placeholder{color:#6d7f95;}
.subscribe input:focus{outline:none;border-color:var(--brand-500);background:rgba(47,224,200,.06);box-shadow:0 0 0 4px rgba(47,224,200,.14);}
.form-note{font-size:13px;color:var(--text-2);margin-top:12px;}
/* ===================== 页脚 ===================== */
.site-footer{border-top:1px solid var(--line);margin-top:24px;background:rgba(8,14,21,.72);}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding:60px 0 40px;
}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:16px;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:all .22s ease;}
.footer-col a:hover{color:var(--brand-500);transform:translateX(2px);}
.footer-note{font-size:14px;color:var(--text-2);line-height:1.9;}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-2);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:var(--text-2);}
.footer-bottom a:hover{color:var(--brand-500);}
/* ===================== 动效 ===================== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}
/* ===================== 响应式 ===================== */
@media (max-width:1199px){
  .layout-with-toc{grid-template-columns:200px minmax(0,1fr);gap:28px;}
  .section{padding:72px 0;}
}
@media (max-width:991px){
  .nav-toggle{display:flex;}
  .header-cta .btn{display:none;}
  .nav-chips{
    position:fixed;top:65px;left:0;right:0;bottom:0;z-index:70;
    display:none;flex-direction:column;align-items:stretch;gap:8px;
    padding:24px 20px 40px;overflow-y:auto;
    background:rgba(10,17,25,.97);
    backdrop-filter:blur(18px) saturate(130%);
    -webkit-backdrop-filter:blur(18px) saturate(130%);
  }
  .nav-chips.is-open{display:flex;}
  .nav-chips .chip{width:100%;text-align:center;padding:14px 16px;font-size:16px;border-color:var(--line);}
  .header-cta{margin-left:auto;}
  .header-inner{gap:12px;}
  .layout-with-toc{grid-template-columns:1fr;}
  .toc{position:static;display:flex;gap:8px;overflow-x:auto;padding:14px;scrollbar-width:none;}
  .toc h3{display:none;}
  .toc a{border-left:0;border:1px solid var(--line);border-radius:999px;white-space:nowrap;padding:8px 14px;}
  .feature-card{grid-template-columns:1fr;}
  .feature-media{min-height:280px;position:relative;}
  .cta-band{grid-template-columns:1fr;padding:40px 28px;}
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px;}
  .stats-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .wrap{padding:0 16px;}
  .header-inner{padding:10px 16px;}
  .brand-mark{font-size:19px;}
  .brand-sub{font-size:11px;letter-spacing:.1em;}
  .section{padding:56px 0;}
  .cat-hero{padding:36px 0 32px;}
  .cat-hero .lead{font-size:16px;}
  .mag-grid{grid-template-columns:1fr;gap:16px;}
  .check-list{grid-template-columns:1fr;gap:0;}
  .check-panel{padding:26px 20px;}
  .feature-body{padding:26px 22px;}
  .check-list li{padding:10px 0;}
  .crumbs .now{max-width:100%;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:26px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .btn{width:100%;height:46px;}
  .btn-quiet{width:auto;height:auto;}
  .feature-actions{gap:10px;}
  .stats-strip{grid-template-columns:1fr;}
  .faq-btn{font-size:15.5px;padding:16px 18px;}
  .faq-body{padding:0 18px 18px;}
  .subscribe input{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
  .mag-card,.feature-card,.toc,.site-header{background:#111d2a;}
}