/* roulang page: index */
:root{
  --ink-900:#060B14;
  --ink-800:#0A1220;
  --ink-700:#0F1A2B;
  --brand:#38E0C6;
  --brand-deep:#12A38F;
  --accent:#F2A33C;
  --t1:#EAF2F6;
  --t2:#9FB0BF;
  --t3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --ok:#3FD08A;
  --warn:#F2A33C;
  --err:#E4665C;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(56,224,198,.22),0 12px 40px rgba(56,224,198,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --pad-desk:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--t2);
  background:var(--ink-900);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(30px,4.4vw,54px);line-height:1.15}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section.alt{background:var(--ink-800)}
.section.line-top{border-top:1px solid var(--line)}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--brand)}
.lead{font-size:18px;line-height:1.75;color:var(--t2)}
.sec-head{max-width:720px;margin-bottom:40px}
.sec-head h2{margin:12px 0 14px}
.sec-head p{font-size:15px;color:var(--t3)}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-head-row .sec-head{margin-bottom:0}

/* ===== header / nav ===== */
.site-header{position:sticky;top:0;z-index:90;transition:background .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s var(--ease);border-bottom:1px solid transparent}
.site-header.is-scrolled{background:rgba(6,11,20,.72);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--t1);letter-spacing:.02em;flex:none}
.brand-mark{position:relative;width:24px;height:24px;flex:none}
.brand-mark i{position:absolute;left:0;display:block;height:2px;border-radius:2px;background:var(--brand)}
.brand-mark i:nth-child(1){top:4px;width:22px;opacity:.45}
.brand-mark i:nth-child(2){top:11px;width:16px;left:6px;opacity:1}
.brand-mark i:nth-child(3){top:18px;width:20px;left:2px;opacity:.7}
.nav-links{display:flex;align-items:center;gap:34px;margin:0;padding:0}
.nav-links a{position:relative;display:inline-block;font-size:14px;letter-spacing:.02em;color:var(--t2);padding:6px 0;transition:color .2s var(--ease)}
.nav-links a:hover{color:var(--t1)}
.nav-links a::after{content:"";position:absolute;left:50%;bottom:-4px;width:16px;height:2px;border-radius:2px;background:var(--brand);transform:translateX(-50%) scaleX(0);transform-origin:center;transition:transform .22s var(--ease)}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(.6)}
.nav-links a.is-active{color:var(--t1)}
.nav-links a.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-sm);font-size:14px;font-weight:600;letter-spacing:.02em;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#04211C;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(56,224,198,.35),0 16px 44px rgba(56,224,198,.24)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--t1)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:color .2s var(--ease)}
.link-arrow span{transition:transform .2s var(--ease)}
.link-arrow:hover span{transform:translateX(2px)}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:var(--r-sm)}
.nav-toggle i{position:relative;display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform .22s var(--ease),background .22s var(--ease)}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform .22s var(--ease)}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}
body.drawer-open .nav-toggle i{background:transparent}
body.drawer-open .nav-toggle i::before{transform:translateY(6px) rotate(45deg)}
body.drawer-open .nav-toggle i::after{transform:translateY(-6px) rotate(-45deg)}
.drawer{position:fixed;inset:0 0 0 auto;width:min(86vw,360px);background:var(--ink-900);border-left:1px solid var(--line);z-index:100;padding:88px 28px 32px;display:flex;flex-direction:column;gap:8px;transform:translateX(100%);transition:transform .26s var(--ease);overflow-y:auto}
body.drawer-open .drawer{transform:translateX(0)}
.drawer a.drawer-link{display:block;font-size:18px;color:var(--t1);padding:12px 0;border-bottom:1px solid var(--line)}
.drawer a.drawer-link.is-active{color:var(--brand)}
.drawer .btn{width:100%;margin-top:20px}
.drawer-backdrop{position:fixed;inset:0;background:rgba(3,6,12,.6);backdrop-filter:blur(2px);z-index:99;opacity:0;pointer-events:none;transition:opacity .26s var(--ease)}
body.drawer-open .drawer-backdrop{opacity:1;pointer-events:auto}

/* ===== buttons / tags ===== */
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;background:rgba(56,224,198,.10);color:var(--brand);border:1px solid rgba(56,224,198,.22)}
.tag-neutral{background:rgba(255,255,255,.04);color:var(--t3);border-color:var(--line)}
.tag-accent{background:rgba(242,163,60,.12);color:var(--accent);border-color:rgba(242,163,60,.28)}

/* ===== hero ===== */
.hero{position:relative;overflow:hidden;padding:72px 0 96px}
.hero::before{content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.webp);background-size:cover;background-position:center;opacity:.16;pointer-events:none}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(900px 460px at 78% 18%,rgba(56,224,198,.10),transparent 70%),linear-gradient(180deg,rgba(6,11,20,.2),var(--ink-900) 88%);pointer-events:none}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center}
.hero-copy{grid-column:span 7}
.hero-visual{grid-column:span 5}
.hero h1{margin:18px 0 20px}
.hero-sub{font-size:18px;line-height:1.75;color:var(--t2);max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 40px}
.hero-metrics{display:flex;align-items:stretch;gap:0;border-top:1px solid var(--line);padding-top:24px;max-width:560px}
.hero-metrics .m{flex:1;padding-right:20px}
.hero-metrics .m + .m{border-left:1px solid var(--line);padding-left:20px}
.hero-metrics b{display:block;font-size:26px;line-height:1.2;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.hero-metrics span{display:block;font-size:12px;color:var(--t3);margin-top:6px;letter-spacing:.02em}

/* glass panel */
.glass{background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));border:1px solid var(--line);border-radius:var(--r-lg);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%)}
.hero-panel{position:relative;overflow:hidden;padding:16px;box-shadow:var(--shadow-2)}
.hero-panel::before{content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.png);background-size:cover;background-position:center;opacity:.10;pointer-events:none}
.panel-top{position:relative;display:flex;align-items:center;gap:6px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.panel-top .dot{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.20)}
.panel-title{margin-left:8px;font-size:12px;letter-spacing:.08em;color:var(--t3)}
.panel-body{position:relative;display:grid;grid-template-columns:104px 1fr;gap:14px;padding-top:14px}
.panel-side{display:flex;flex-direction:column;gap:6px;border-right:1px solid var(--line);padding-right:12px}
.side-item{font-size:12px;color:var(--t3);padding:7px 8px;border-radius:8px;line-height:1.3}
.side-item.is-on{background:rgba(56,224,198,.12);color:var(--brand);font-weight:600}
.panel-main{display:flex;flex-direction:column;gap:14px}
.stat-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.stat-cell{border:1px solid var(--line);border-radius:var(--r-md);padding:10px 12px}
.stat-cell b{display:block;font-size:20px;color:var(--t1);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-cell span{font-size:11px;color:var(--t3);letter-spacing:.04em}
.chart{display:flex;align-items:flex-end;gap:7px;height:96px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r-md)}
.chart i{flex:1;display:block;border-radius:3px 3px 0 0;background:linear-gradient(180deg,rgba(56,224,198,.85),rgba(56,224,198,.22))}
.chart i.mute{background:linear-gradient(180deg,rgba(255,255,255,.20),rgba(255,255,255,.06))}
.trend{height:34px;border:1px solid var(--line);border-radius:var(--r-md);position:relative;overflow:hidden}
.trend::before{content:"";position:absolute;inset:0;background:
  linear-gradient(180deg,transparent 0%,transparent 100%),
  repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 28px);}
.trend::after{content:"";position:absolute;left:0;right:0;top:50%;height:2px;background:linear-gradient(90deg,rgba(56,224,198,.1),var(--brand),rgba(56,224,198,.1));transform:translateY(-50%)}

/* ===== value strip ===== */
.value-strip{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:36px 0}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.value-item{padding:0 32px}
.value-item:first-child{padding-left:0}
.value-item + .value-item{border-left:1px solid var(--line)}
.value-item .num{display:block;font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--accent);font-variant-numeric:tabular-nums}
.value-item h3{margin:10px 0 6px;font-size:17px}
.value-item p{font-size:14px;color:var(--t3);line-height:1.7}

/* ===== feature groups ===== */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:64px 0;border-top:1px solid var(--line)}
.feature-row:first-of-type{border-top:0;padding-top:0}
.feature-row.reverse .feature-media{order:-1}
.feature-copy .fnum{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--accent);font-variant-numeric:tabular-nums}
.feature-copy h2{margin:12px 0 16px;font-size:clamp(22px,2.2vw,30px)}
.feature-copy p{font-size:15px;line-height:1.85;color:var(--t2)}
.feature-list{margin:22px 0 24px;display:flex;flex-direction:column;gap:12px}
.feature-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--t1)}
.feature-list li .tick{flex:none;width:18px;height:18px;margin-top:4px;border:1px solid rgba(56,224,198,.4);border-radius:5px;position:relative}
.feature-list li .tick::after{content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(42deg)}
.feature-media{position:relative}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--ink-700)}
.img-fallback{background:var(--ink-700);background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.035) 0 1px,transparent 1px 10px)}

/* ===== scenes ===== */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;padding-bottom:48px}
.scene-card{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.scene-card:nth-child(2){transform:translateY(24px)}
.scene-card:nth-child(3){transform:translateY(48px)}
.scene-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2)}
.scene-card:nth-child(2):hover{transform:translateY(20px)}
.scene-card:nth-child(3):hover{transform:translateY(44px)}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.scene-body{padding:22px 24px 26px}
.scene-body h3{margin-bottom:10px}
.scene-body p{font-size:14px;color:var(--t2);line-height:1.8;margin-bottom:16px}

/* ===== case ===== */
.case-wrap{display:grid;grid-template-columns:1.4fr 1fr;gap:56px;align-items:center}
.case-quote{border-left:2px solid var(--brand);padding-left:28px}
.case-quote p{font-size:clamp(20px,2.1vw,26px);line-height:1.6;color:var(--t1);font-weight:600}
.case-quote .who{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--t3);letter-spacing:.02em}
.case-stats{display:flex;flex-direction:column;gap:20px}
.case-stats .cs{border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;background:var(--ink-700)}
.case-stats b{display:block;font-size:34px;line-height:1.1;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.case-stats span{display:block;font-size:12px;color:var(--t3);margin-top:6px;letter-spacing:.03em}

/* ===== pricing ===== */
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.price-card{position:relative;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;transition:transform .22s var(--ease),border-color .22s var(--ease)}
.price-card:hover{border-color:var(--line-strong)}
.price-card .plan-name{font-size:15px;font-weight:600;color:var(--t2);letter-spacing:.04em}
.price-card .amount{display:flex;align-items:baseline;gap:8px;margin:16px 0 8px}
.price-card .amount b{font-size:40px;line-height:1;font-weight:700;color:var(--t1);font-variant-numeric:tabular-nums}
.price-card .amount em{font-style:normal;font-size:13px;color:var(--t3)}
.price-card .plan-desc{font-size:14px;color:var(--t3);line-height:1.7;min-height:48px}
.plan-list{margin:24px 0 28px;display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--line);padding-top:22px}
.plan-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--t2)}
.plan-list li .yes{flex:none;width:16px;height:16px;border-radius:50%;background:rgba(56,224,198,.14);position:relative}
.plan-list li .yes::after{content:"";position:absolute;left:5px;top:3px;width:4px;height:7px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(42deg)}
.plan-list li .no{flex:none;width:16px;height:16px;border-radius:50%;background:rgba(255,255,255,.05);position:relative}
.plan-list li .no::after{content:"";position:absolute;left:5px;top:7px;width:6px;height:1.5px;background:var(--t3)}
.plan-list li.off{color:var(--t3)}
.price-card .btn{width:100%}
.price-card.featured{border-color:rgba(56,224,198,.30);box-shadow:var(--glow);padding-top:40px;margin-top:-8px}
.price-card.featured .plan-name{color:var(--brand)}
.price-badge{position:absolute;top:-13px;left:32px;height:26px;padding:0 14px;border-radius:999px;background:var(--accent);color:#2A1A05;font-size:12px;font-weight:700;letter-spacing:.06em;display:inline-flex;align-items:center}

/* ===== news ===== */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2)}
.news-thumb{overflow:hidden;border-bottom:1px solid var(--line)}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .26s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:15px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:13px;line-height:1.7;color:var(--t3);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:10px;font-size:12px;color:var(--t3);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.empty-panel{border:1px dashed var(--line-strong);border-radius:var(--r-lg);padding:48px;text-align:center;color:var(--t3);font-size:14px}
.empty-panel p{margin-bottom:18px}

/* ===== faq ===== */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 0;font-size:16px;font-weight:600;color:var(--t1);cursor:pointer;list-style:none;transition:color .2s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary .ico{flex:none;width:18px;height:18px;position:relative;transition:transform .22s var(--ease)}
.faq-item summary .ico::before,.faq-item summary .ico::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-item summary .ico::before{left:0;top:8px;width:18px;height:2px}
.faq-item summary .ico::after{left:8px;top:0;width:2px;height:18px;transition:opacity .22s var(--ease)}
.faq-item[open] summary .ico{transform:rotate(45deg)}
.faq-item p{padding:0 40px 22px 0;font-size:15px;line-height:1.85;color:var(--t2)}

/* ===== cta ===== */
.cta-band{padding:0 0 96px}
.cta-card{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:36px 40px;box-shadow:var(--shadow-2)}
.cta-card h2{font-size:clamp(20px,2.2vw,28px)}
.cta-card p{font-size:14px;color:var(--t2);margin-top:8px}

/* ===== footer ===== */
.site-footer{background:var(--ink-800);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{font-size:14px;color:var(--t3);line-height:1.8;margin-top:16px;max-width:280px}
.footer-col h4{font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--t3);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--t2);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-col .contact-line{font-size:14px;color:var(--t2);line-height:1.7}
.footer-bottom{margin-top:56px;border-top:1px solid var(--line);padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12px;color:var(--t3);letter-spacing:.02em}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ===== responsive ===== */
@media (max-width:1279px){
  .container{padding:0 24px}
  .feature-row{gap:40px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .hero{padding:48px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-copy,.hero-visual{grid-column:1 / -1}
  .hero-sub{max-width:none}
  .value-grid{grid-template-columns:1fr}
  .value-item{padding:20px 0}
  .value-item:first-child{padding-top:0}
  .value-item + .value-item{border-left:0;border-top:1px solid var(--line);padding-left:0}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:48px 0}
  .feature-row.reverse .feature-media{order:0}
  .scene-grid{grid-template-columns:1fr 1fr;padding-bottom:0}
  .scene-card,.scene-card:nth-child(2),.scene-card:nth-child(3){transform:none}
  .scene-card:hover,.scene-card:nth-child(2):hover,.scene-card:nth-child(3):hover{transform:translateY(-4px)}
  .case-wrap{grid-template-columns:1fr;gap:36px}
  .case-stats{flex-direction:row}
  .case-stats .cs{flex:1;padding:18px}
  .case-stats b{font-size:28px}
  .news-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-links{gap:22px}
}
@media (max-width:767px){
  .nav-links,.nav-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .nav{height:60px}
  .hero-metrics{flex-wrap:wrap;gap:16px 0}
  .hero-metrics .m{flex:1 1 50%;padding-right:0}
  .hero-metrics .m + .m{border-left:0;padding-left:0}
  .hero-metrics .m:nth-child(3){flex-basis:100%;border-top:1px solid var(--line);padding-top:16px}
  .scene-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .price-card.featured{order:-1;margin-top:12px}
  .case-stats{flex-direction:column}
  .news-grid{grid-template-columns:1fr}
  .cta-card{flex-direction:column;align-items:flex-start;padding:28px}
  .cta-card .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .faq-item p{padding-right:0}
}
@media (max-width:519px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero-cta .btn{width:100%}
  .panel-body{grid-template-columns:1fr}
  .panel-side{flex-direction:row;flex-wrap:wrap;border-right:0;border-bottom:1px solid var(--line);padding:0 0 12px;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#060B14;
  --ink-800:#0A1220;
  --ink-700:#0F1A2B;
  --brand:#38E0C6;
  --brand-deep:#12A38F;
  --accent:#F2A33C;
  --t1:#EAF2F6;
  --t2:#9FB0BF;
  --t3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --ok:#3FD08A;
  --warn:#F2A33C;
  --err:#E4665C;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(56,224,198,.22), 0 12px 40px rgba(56,224,198,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --font:-apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(56,224,198,.25);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,11,20,0);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease), border-color .22s var(--ease), backdrop-filter .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,11,20,.72);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:40px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;font-size:17px;letter-spacing:.02em}
.brand:hover{color:#fff}
.brand-mark{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:22px;height:22px;flex:none}
.brand-mark i{display:block;height:2px;border-radius:2px;background:var(--brand)}
.brand-mark i:nth-child(1){width:100%}
.brand-mark i:nth-child(2){width:74%;margin-left:9%}
.brand-mark i:nth-child(3){width:50%;margin-left:22%}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  color:var(--t2);font-size:14px;letter-spacing:.02em;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--t1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--t1)}
.nav-links a.is-active::after{transform:scaleX(1);height:2px;width:16px;right:auto}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line-strong);position:relative;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand)}
.nav-toggle i,
.nav-toggle i::before{
  position:absolute;left:50%;width:16px;height:2px;background:var(--t1);border-radius:2px;
  transform:translateX(-50%);transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle i{top:50%;margin-top:-1px}
.nav-toggle i::before{content:"";left:0;top:-6px;transform:none}
.nav-toggle[aria-expanded="true"] i{transform:translateX(-50%) rotate(45deg)}
.nav-toggle[aria-expanded="true"] i::before{transform:translateY(6px) rotate(-90deg)}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;pointer-events:none;
}
.drawer::before{
  content:"";position:absolute;inset:0;background:rgba(6,11,20,.6);
  opacity:0;transition:opacity .24s var(--ease);
}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(86vw,340px);
  background:var(--ink-900);border-left:1px solid var(--line);
  padding:22px 22px 30px;display:flex;flex-direction:column;gap:22px;
  transform:translateX(100%);transition:transform .26s var(--ease);
}
.drawer.is-open{pointer-events:auto}
.drawer.is-open::before{opacity:1}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:38px;height:38px;border:1px solid var(--line-strong);border-radius:var(--r-sm);color:var(--t2);font-size:18px;line-height:1}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-links{display:flex;flex-direction:column;gap:20px;margin-top:8px}
.drawer-links a{color:var(--t1);font-size:18px;font-weight:600}
.drawer-links a:hover{color:var(--brand)}
.drawer .btn{margin-top:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04211D;box-shadow:0 0 0 1px rgba(56,224,198,.22),0 10px 30px rgba(56,224,198,.18);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(56,224,198,.35),0 14px 38px rgba(56,224,198,.28);color:#04211D;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--t1)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;height:auto;padding:0;
  color:var(--brand);font-size:14px;font-weight:600;
}
.btn-link:hover{color:var(--brand)}
.btn-link .arrow{transition:transform .2s var(--ease)}
.btn-link:hover .arrow{transform:translateX(3px)}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:rgba(56,224,198,.1);border:1px solid rgba(56,224,198,.22);
  color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.08em;
}
.tag-muted{background:rgba(255,255,255,.04);border-color:var(--line-strong);color:var(--t3)}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--brand);
}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;
  padding:44px 0 40px;
  border-bottom:1px solid var(--line);
  background:var(--ink-800);
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.14;pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,.55),rgba(10,18,32,.96));
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12.5px;color:var(--t3);margin-bottom:26px;
}
.breadcrumb a{color:var(--t3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.2)}
.breadcrumb .current{
  color:var(--t2);max-width:min(52ch,100%);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-head{max-width:860px}
.article-head h1{
  font-size:clamp(26px,3.4vw,38px);
  line-height:1.28;margin:16px 0 18px;
  word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:12.5px;color:var(--t3);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line-strong)}
.article-meta .num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 正文 ---------- */
.article-section{padding:56px 0 72px;background:var(--ink-900)}
.article-body{
  max-width:720px;margin:0 auto;
  font-size:16px;line-height:1.9;color:var(--t2);
  word-break:break-word;overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  position:relative;padding-left:15px;
  font-size:clamp(21px,2.3vw,27px);line-height:1.35;
  margin:40px 0 16px;color:var(--t1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.42em;width:3px;height:18px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;line-height:1.45;margin:28px 0 12px;color:var(--t1)}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--t1)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;line-height:1.85}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.45em}
.article-body li::marker{color:var(--brand)}
.article-body strong{color:var(--t1);font-weight:600}
.article-body a{
  color:var(--brand);text-decoration:underline;
  text-decoration-thickness:1px;text-underline-offset:3px;
}
.article-body a:hover{color:#7BF0DC}
.article-body blockquote{
  margin:1.4em 0;padding:14px 20px;
  border-left:2px solid var(--brand);
  background:rgba(56,224,198,.06);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--t1);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  max-width:100%;height:auto;margin:26px auto;
  border-radius:var(--r-md);border:1px solid var(--line);
}
.article-body figure{margin:26px 0}
.article-body figcaption{
  margin-top:8px;text-align:center;font-size:12px;color:var(--t3);
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.4em 0;
  font-size:14.5px;
}
.article-body th,.article-body td{
  padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);
}
.article-body th{color:var(--t1);font-weight:600;background:rgba(255,255,255,.03)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.article-body pre{
  margin:1.4em 0;padding:16px 18px;overflow-x:auto;
  background:var(--ink-700);border:1px solid var(--line);
  border-radius:var(--r-md);font-size:13.5px;line-height:1.7;color:var(--t1);
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;color:var(--brand);
  background:rgba(56,224,198,.09);border-radius:4px;padding:1px 5px;
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{
  border:0;border-top:1px solid var(--line);margin:34px 0;
}

/* 空态 */
.empty-state{
  border:1px dashed var(--line-strong);
  border-radius:var(--r-lg);
  padding:56px 28px;text-align:center;
  background:var(--ink-800);
}
.empty-state h2{font-size:20px;margin-bottom:10px;color:var(--t1)}
.empty-state p{color:var(--t3);font-size:14px;margin-bottom:22px}

/* 文末动作 */
.article-foot{
  max-width:720px;margin:48px auto 0;padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.article-foot .note{font-size:13px;color:var(--t3)}

/* ---------- 继续了解 ---------- */
.related-section{padding:72px 0;background:var(--ink-800);border-top:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin-bottom:12px}
.section-head p{font-size:15px;color:var(--t2)}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;gap:12px;
  padding:20px;border-radius:var(--r-lg);
  background:var(--ink-700);border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.rel-card .media{
  border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:var(--ink-800);
}
.rel-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rel-card:hover .media img{transform:scale(1.03)}
.rel-card h3{font-size:18px;color:var(--t1);margin-top:2px}
.rel-card p{font-size:14px;color:var(--t3);line-height:1.75}
.rel-card .more{font-size:13px;font-weight:600;color:var(--brand);margin-top:2px}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 96px;background:var(--ink-800)}
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:36px 40px;border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line-strong);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--glow);
}
.cta-card h2{font-size:clamp(20px,2.2vw,26px);line-height:1.32;margin-bottom:10px}
.cta-card p{font-size:14px;color:var(--t2);max-width:56ch}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;padding-bottom:40px;
}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--t3);max-width:28ch;line-height:1.75}
.footer-col h4{
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--t3);font-weight:600;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--t2)}
.footer-col a:hover{color:var(--brand)}
.contact-line{font-size:14px;color:var(--t3);line-height:1.7}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px 28px;justify-content:space-between;
  padding-top:24px;border-top:1px solid var(--line);
  font-size:12px;color:var(--t3);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 22px}
  .nav{gap:28px}
  .nav-links{gap:24px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}
  .article-section{padding:48px 0 64px}
  .related-section{padding:60px 0}
  .cta-section{padding:0 0 76px}
}
@media (max-width:860px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav{gap:16px;height:64px}
  .nav-actions{margin-left:auto}
  .related-grid{grid-template-columns:1fr}
  .cta-card{flex-direction:column;align-items:flex-start;gap:22px;padding:28px 24px}
  .cta-card .btn{width:100%}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .article-hero{padding:32px 0 30px}
  .breadcrumb{font-size:12px;margin-bottom:18px}
  .article-body{font-size:15.5px;line-height:1.85}
  .article-body h2{margin-top:34px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-foot{flex-direction:column;align-items:flex-start}
  .site-footer{padding:48px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:420px){
  .nav-actions .btn-sm{display:none}
  .btn{width:100%}
  .btn-sm{width:auto}
  .article-body h2{font-size:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink-900:#060B14;
  --ink-800:#0A1220;
  --ink-700:#0F1A2B;
  --brand:#38E0C6;
  --brand-deep:#12A38F;
  --accent:#F2A33C;
  --t1:#EAF2F6;
  --t2:#9FB0BF;
  --t3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.25}
h1{font-size:clamp(28px,3.6vw,42px);line-height:1.18;letter-spacing:.01em}
h2{font-size:clamp(24px,2.6vw,34px)}
h3{font-size:20px;line-height:1.4}
h4{font-size:17px;line-height:1.5}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:14px;
}
.sec-head{max-width:720px;margin-bottom:40px}
.sec-head p{margin-top:14px;color:var(--t2);font-size:16px;max-width:640px}
.lede{font-size:18px;line-height:1.75;color:var(--t2)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#04211D;
  box-shadow:0 0 0 1px rgba(56,224,198,.22),0 10px 28px rgba(56,224,198,.16);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(56,224,198,.35),0 14px 36px rgba(56,224,198,.26);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--t1)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:14px;
  font-weight:600;
}
.link-arrow::after{content:"→";transition:transform .2s var(--ease)}
.link-arrow:hover::after{transform:translateX(3px)}
.chip-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  font-size:14px;
  color:var(--t1);
  background:rgba(255,255,255,.02);
}
.chip-link:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  background:rgba(56,224,198,.10);
  border:1px solid rgba(56,224,198,.28);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,11,20,.55);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(12px) saturate(120%);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--t1);letter-spacing:.02em}
.brand-mark{position:relative;display:inline-block;width:22px;height:22px;flex:none}
.brand-mark i{position:absolute;display:block;height:2px;border-radius:2px;background:var(--brand)}
.brand-mark i:nth-child(1){width:14px;top:4px;left:0;opacity:.95}
.brand-mark i:nth-child(2){width:18px;top:10px;left:4px;opacity:.7}
.brand-mark i:nth-child(3){width:11px;top:16px;left:0;opacity:.45}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--t2);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-2px;
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--t1)}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(.6);opacity:.65}
.nav-links a.is-active{color:var(--t1);font-weight:600}
.nav-links a.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;
  position:relative;
  width:40px;
  height:40px;
  padding:0;
  border:1px solid var(--line-strong);
  border-radius:10px;
  background:transparent;
  cursor:pointer;
}
.nav-toggle i{position:absolute;left:12px;top:19px;width:16px;height:1.5px;background:var(--t1);border-radius:2px;transition:background-color .2s var(--ease)}
.nav-toggle i::before,.nav-toggle i::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:1.5px;
  border-radius:2px;
  background:var(--t1);
  transition:transform .22s var(--ease);
}
.nav-toggle i::before{top:-5px}
.nav-toggle i::after{top:5px}
.nav-toggle[aria-expanded="true"] i{background:transparent}
.nav-toggle[aria-expanded="true"] i::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] i::after{transform:translateY(-5px) rotate(-45deg)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;
  top:0;
  right:0;
  z-index:90;
  width:min(320px,86vw);
  height:100%;
  padding:24px;
  background:var(--ink-900);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .26s var(--ease);
  display:flex;
  flex-direction:column;
  gap:28px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line-strong);
  background:transparent;color:var(--t1);cursor:pointer;font-size:18px;line-height:1;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-links{display:flex;flex-direction:column;gap:20px}
.drawer-links a{font-size:18px;color:var(--t1)}
.drawer-links a.is-active{color:var(--brand)}
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(3,6,12,.7);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
body.is-locked{overflow:hidden}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:84px 0 68px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(96deg,rgba(6,11,20,.95) 0%,rgba(6,11,20,.86) 46%,rgba(6,11,20,.66) 100%),
    url('/assets/images/backpic/back-1.webp') center right/cover no-repeat,
    var(--ink-800);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--t3);margin-bottom:20px}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.page-hero h1{max-width:22ch}
.page-hero .hero-note{margin-top:18px;max-width:660px;font-size:17px;line-height:1.75;color:var(--t2)}
.page-hero .hero-entry{margin-top:26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border:1px solid var(--line);border-radius:999px;
  font-size:12.5px;color:var(--t2);background:rgba(255,255,255,.03);
  font-variant-numeric:tabular-nums;
}
.hero-badge b{color:var(--brand);font-weight:600}

/* ---------- value strip ---------- */
.value-strip{background:var(--ink-800);border-bottom:1px solid var(--line)}
.value-strip .strip-grid{display:grid;grid-template-columns:repeat(3,1fr)}
.strip-cell{padding:34px 32px;border-left:1px solid var(--line)}
.strip-cell:first-child{border-left:0;padding-left:0}
.strip-cell .num{
  display:block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  margin-bottom:10px;
}
.strip-cell h3{font-size:16px;margin-bottom:6px}
.strip-cell p{font-size:14px;line-height:1.75;color:var(--t3)}

/* ---------- features ---------- */
.feature{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:64px 0;
  border-top:1px solid var(--line);
}
.feature:first-of-type{border-top:0;padding-top:0}
.feature--flip .feature-media{order:-1}
.feature-media{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--ink-700);
  box-shadow:var(--shadow);
}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease)}
.feature-media:hover img{transform:scale(1.03)}
.feature-body h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:16px}
.feature-body p{font-size:15.5px;line-height:1.85;color:var(--t2)}
.feature-body p + p{margin-top:14px}
.feature-body .link-arrow{margin-top:20px}

/* ---------- spec table ---------- */
.spec-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:var(--ink-700);
  overflow:hidden;
}
.spec-table{width:100%;border-collapse:collapse}
.spec-table th,.spec-table td{
  padding:18px 24px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--line);
}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:0}
.spec-table th{width:40%;font-size:15px;font-weight:600;color:var(--t1)}
.spec-table td{font-size:15px;color:var(--t2)}
.spec-table tbody tr:hover{background:rgba(255,255,255,.025)}
.spec-table tbody tr:hover th{color:var(--brand)}

/* ---------- metrics ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:var(--ink-800);
  overflow:hidden;
}
.metric{padding:34px 30px;border-left:1px solid var(--line)}
.metric:first-child{border-left:0}
.metric strong{
  display:block;
  font-size:clamp(30px,3.4vw,40px);
  line-height:1.1;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
  margin-bottom:10px;
}
.metric span{display:block;font-size:13px;color:var(--t3);line-height:1.7}
.metric-note{margin-top:18px;font-size:13px;color:var(--t3)}

/* ---------- matrix ---------- */
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.matrix-item{
  display:flex;
  gap:18px;
  padding:24px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--ink-700);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.matrix-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.matrix-item .idx{
  flex:none;
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid rgba(56,224,198,.28);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
}
.matrix-item h3{font-size:16px;margin-bottom:6px}
.matrix-item p{font-size:14px;line-height:1.75;color:var(--t3)}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  cursor:pointer;
  list-style:none;
  color:var(--t1);
  font-size:16px;
  font-weight:600;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  flex:none;
  color:var(--brand);
  font-size:18px;
  line-height:1;
  transition:transform .22s var(--ease);
}
.faq-item summary:hover{color:var(--brand)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{color:var(--brand)}
.faq-body{padding:0 0 22px;max-width:92%;font-size:15px;line-height:1.8;color:var(--t2)}

/* ---------- related + cta ---------- */
.related{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:56px}
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:36px 40px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:0 0 0 1px rgba(56,224,198,.22),0 12px 40px rgba(56,224,198,.16);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--t2)}
.cta-band .btn{flex:none}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-800);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--t3);max-width:280px}
.footer-col h4{
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--t3);
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--t2)}
.footer-col a:hover{color:var(--brand)}
.contact-line{font-size:14px;color:var(--t3);line-height:1.7}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 24px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--t3);
}

/* ---------- reveal ---------- */
.js [data-reveal]{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .feature{gap:40px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-links{gap:24px}
  .feature{grid-template-columns:1fr;gap:28px;padding:48px 0}
  .feature--flip .feature-media{order:0}
  .matrix{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .metrics{grid-template-columns:1fr}
  .metric{border-left:0;border-top:1px solid var(--line)}
  .metric:first-child{border-top:0}
  .value-strip .strip-grid{grid-template-columns:1fr}
  .strip-cell{border-left:0;border-top:1px solid var(--line);padding:24px 0}
  .strip-cell:first-child{border-top:0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .nav{height:60px}
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-actions .btn-sm{display:none}
  .page-hero{padding:56px 0 48px}
  .page-hero .hero-note{font-size:15.5px}
  .spec-table th,.spec-table td{display:block;width:100%;padding:12px 18px}
  .spec-table th{border-bottom:0;padding-bottom:4px;font-size:14px;color:var(--brand)}
  .spec-table td{padding-top:0;font-size:14.5px}
  .spec-table tr{display:block;border-bottom:1px solid var(--line);padding:8px 0}
  .spec-table tr:last-child{border-bottom:0}
  .spec-table tbody tr:hover{background:transparent}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;gap:20px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .faq-body{max-width:100%}
  .matrix-item{padding:20px}
  .feature-media img{aspect-ratio:16/11}
}
@media (max-width:419px){
  .btn{width:100%}
  .cta-band .btn{width:100%}
  h1{font-size:26px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js [data-reveal]{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category2 */
:root{
  --ink-900:#060B14;
  --ink-800:#0A1220;
  --ink-700:#0F1A2B;
  --brand:#38E0C6;
  --brand-deep:#12A38F;
  --accent:#F2A33C;
  --t1:#EAF2F6;
  --t2:#9FB0BF;
  --t3:#6B7C8C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --ok:#3FD08A;
  --warn:#F2A33C;
  --err:#E4665C;
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(56,224,198,.22),0 12px 40px rgba(56,224,198,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"Inter","Roboto Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{color:var(--t1);font-weight:700}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--band{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.16em;
  color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand);opacity:.7}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;margin:14px 0 12px}
.section-head p{font-size:16px;color:var(--t2);line-height:1.8}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04211D;box-shadow:0 6px 18px rgba(56,224,198,.18);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:var(--glow);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:var(--t1);border-color:var(--line-strong);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  transition:gap var(--dur) var(--ease),color var(--dur) var(--ease);
}
.link-more::after{content:"→";transition:transform var(--dur) var(--ease)}
.link-more:hover::after{transform:translateX(3px)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,20,.55);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(12px) saturate(120%);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  border-bottom-color:var(--line);
}
.nav{display:flex;align-items:center;gap:36px;height:72px}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:var(--t1);letter-spacing:.01em;
  transition:color var(--dur) var(--ease);
}
.brand:hover{color:var(--brand)}
.brand-mark{position:relative;width:26px;height:26px;flex:0 0 26px}
.brand-mark i{position:absolute;height:2px;border-radius:2px;background:var(--brand);display:block}
.brand-mark i:nth-child(1){width:22px;top:5px;left:0;opacity:.95}
.brand-mark i:nth-child(2){width:16px;top:12px;left:5px;opacity:.7}
.brand-mark i:nth-child(3){width:10px;top:19px;left:11px;opacity:.45}
.nav-links{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-block;
  font-size:14px;letter-spacing:.02em;color:var(--t2);
  padding:6px 0;
  transition:color var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--t1)}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-6px;
  width:16px;height:2px;border-radius:2px;background:var(--brand);
  transform:translateX(-50%) scaleX(0);transform-origin:center;
  transition:transform var(--dur) var(--ease);
}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(.55)}
.nav-links a.is-active{color:var(--t1)}
.nav-links a.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:8px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line-strong);
  position:relative;cursor:pointer;
}
.nav-toggle i,
.nav-toggle i::before{
  content:"";position:absolute;left:50%;width:16px;height:1.5px;background:var(--t1);
  transform:translateX(-50%);transition:transform var(--dur) var(--ease),top var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle i{top:17px}
.nav-toggle i::before{top:6px}
.nav-toggle[aria-expanded="true"] i{top:19px;transform:translateX(-50%) rotate(45deg)}
.nav-toggle[aria-expanded="true"] i::before{top:0;transform:translateX(-50%) rotate(-90deg)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;
  background:var(--ink-900);
  display:flex;flex-direction:column;
  padding:24px;
  transform:translateX(100%);
  transition:transform 260ms var(--ease);
  visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:44px;margin-bottom:28px}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);background:transparent;color:var(--t1);
  font-size:20px;line-height:1;cursor:pointer;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer nav ul{display:flex;flex-direction:column;gap:20px}
.drawer nav a{font-size:18px;font-weight:600;color:var(--t1)}
.drawer nav a:hover{color:var(--brand)}
.drawer .btn{margin-top:auto;width:100%}

/* ---------- hero (category two) ---------- */
.cat-hero{
  position:relative;
  background:var(--ink-800);
  border-bottom:1px solid var(--line);
  padding:72px 0 64px;
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 90% at 20% 0%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 90% at 20% 0%,#000 20%,transparent 78%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12.5px;color:var(--t3);margin-bottom:26px;
}
.crumbs a{color:var(--t3);transition:color var(--dur) var(--ease)}
.crumbs a:hover{color:var(--brand)}
.crumbs span.sep{color:var(--line-strong)}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.15;letter-spacing:.01em;
  max-width:16em;margin:16px 0 18px;
}
.cat-hero .lead{font-size:18px;line-height:1.75;color:var(--t2);max-width:640px}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:26px}
.count-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  font-size:12px;letter-spacing:.12em;color:var(--t2);
  font-variant-numeric:tabular-nums;
}
.count-pill b{color:var(--brand);font-weight:600}
.hero-meta .link-more{font-size:14px}

/* ---------- numbered list ---------- */
.numbered-list{border-top:1px solid var(--line)}
.num-item{
  display:grid;grid-template-columns:112px 1fr;
  gap:32px;padding:34px 0;
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease);
}
.num-item:hover{background:rgba(255,255,255,.018)}
.num-item .num{
  font-family:var(--mono);font-size:40px;line-height:1;font-weight:600;
  color:transparent;-webkit-text-stroke:1px var(--line-strong);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  padding-top:2px;
}
.num-item:hover .num{color:var(--brand);-webkit-text-stroke:1px transparent}
.num-body h3{font-size:20px;line-height:1.4;margin-bottom:10px}
.num-body p{font-size:16px;line-height:1.8;color:var(--t2);max-width:64ch}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  background:rgba(56,224,198,.10);
  border:1px solid rgba(56,224,198,.22);
  color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.04em;
  margin-top:16px;
}
.tag--line{background:transparent;border-color:var(--line-strong);color:var(--t2)}

/* ---------- metrics strip ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--ink-800);
}
.metric{padding:28px 24px;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric .value{
  font-family:var(--mono);font-size:32px;font-weight:600;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.metric .value small{font-size:14px;color:var(--t2);margin-left:4px;font-weight:600}
.metric .label{font-size:12.5px;color:var(--t3);margin-top:8px;letter-spacing:.02em}

/* ---------- card grid ---------- */
.cards-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--ink-700);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2)}
.card-media{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line);background:var(--ink-800)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur) var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 24px 26px}
.card-body .tag{margin-top:0;margin-bottom:12px}
.card-body h3{font-size:17px;line-height:1.5;margin-bottom:8px;transition:color var(--dur) var(--ease)}
.card:hover .card-body h3{color:var(--brand)}
.card-body p{font-size:14px;line-height:1.75;color:var(--t3)}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;list-style:none;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--t1);
  transition:color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary .ico{
  position:relative;flex:0 0 18px;width:18px;height:18px;
  transition:transform var(--dur) var(--ease);
}
.faq-item summary .ico::before,
.faq-item summary .ico::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-item summary .ico::before{top:8px;left:0;width:18px;height:2px}
.faq-item summary .ico::after{top:0;left:8px;width:2px;height:18px}
.faq-item[open] summary .ico{transform:rotate(45deg)}
.faq-item .answer{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--t2);max-width:70ch}

/* ---------- cta ---------- */
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px 44px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  box-shadow:var(--glow);
}
.cta-card h2{font-size:clamp(20px,2.2vw,26px);line-height:1.35;margin-bottom:8px}
.cta-card p{font-size:14px;color:var(--t2)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-800);border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{font-size:14px;color:var(--t3);margin-top:14px;max-width:26ch;line-height:1.8}
.footer-col h4{
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--t3);font-weight:600;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--t2);transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:var(--brand)}
.contact-line{font-size:14px;color:var(--t2);line-height:1.7}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  font-size:12px;color:var(--t3);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 240ms var(--ease),transform 240ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 22px}
  .section{padding:80px 0}
}
@media (max-width:1023px){
  .nav{gap:20px}
  .nav-links{gap:20px}
  .section{padding:72px 0}
  .cat-hero{padding:56px 0 52px}
  .num-item{grid-template-columns:84px 1fr;gap:24px}
  .num-item .num{font-size:34px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:767px){
  .nav{height:60px}
  .nav-links{display:none}
  .nav-actions .btn{display:none}
  .nav-toggle{display:block}
  .section{padding:56px 0}
  .cat-hero{padding:40px 0 44px}
  .cat-hero .lead{font-size:16px}
  .num-item{grid-template-columns:1fr;gap:12px;padding:26px 0}
  .num-item .num{font-size:28px;-webkit-text-stroke:1px var(--line-strong)}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line);padding:22px 20px}
  .metric:last-child{border-bottom:0}
  .cards-2{grid-template-columns:1fr}
  .cta-card{flex-direction:column;align-items:flex-start;padding:28px 24px;gap:20px}
  .cta-card .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:420px){
  .container{padding:0 18px}
  .btn{width:100%}
  .nav-actions .btn-sm{width:auto}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}