/* roulang page: index */
:root{
  --bg-0:#0A111F;--bg-1:#0F1A2E;--bg-2:#16243D;--bg-3:#1B2B47;
  --line-1:rgba(255,255,255,.10);--line-2:rgba(255,255,255,.18);--line-3:rgba(255,255,255,.06);
  --text-0:#EAF1FB;--text-1:#A9B7CC;--text-2:#6E7C93;
  --brand:#58E0C8;--brand-deep:#1E9E8C;--accent:#FFB27A;--accent-2:#8B9DFF;
  --success:#4ADE80;--warning:#FBBF24;--danger:#F87171;--disabled:rgba(255,255,255,.28);
  --glow-brand:0 0 0 1px rgba(88,224,200,.35),0 8px 30px rgba(88,224,200,.22);
  --glow-soft:0 0 0 1px rgba(255,255,255,.14),0 6px 24px rgba(0,0,0,.35);
  --shadow-soft:0 4px 16px rgba(0,0,0,.28);
  --shadow-mid:0 10px 30px rgba(0,0,0,.38);
  --shadow-high:0 18px 48px rgba(0,0,0,.5);
  --r-hero:24px;--r-card:18px;--r-sm:12px;--r-pill:999px;
  --container:1200px;
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::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-0);font-family:var(--font);
  font-size:16px;line-height:1.85;
  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,64px 64px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}

/* 导航 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;transition:height .28s ease,background .28s ease,border-color .28s ease;border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(10,17,31,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line-1)}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;transition:height .28s ease}
.site-header.scrolled .nav-wrap{height:64px}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text-0);white-space:nowrap}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(88,224,200,.8);flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;font-size:15px;color:var(--text-1);padding:6px 0;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:1px;background:var(--brand);transition:left .24s ease,right .24s ease}
.nav-link:hover{color:var(--text-0)}
.nav-link:hover::after{left:0;right:0}
.nav-link.active{color:var(--brand);border:1px solid rgba(88,224,200,.35);background:rgba(88,224,200,.06);border-radius:var(--r-pill);padding:6px 16px}
.nav-link.active::after{display:none}
.nav-cta{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-pill);font-size:15px;font-weight:700;color:#06121B;background:linear-gradient(180deg,#58E0C8,#2FBFA6);box-shadow:var(--glow-brand);transition:transform .2s ease,filter .2s ease,box-shadow .2s ease}
.nav-cta:hover{filter:brightness(1.06);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(1px)}
.nav-toggle{display:none;width:44px;height:44px;background:transparent;border:0;cursor:pointer;padding:0;position:relative}
.nav-toggle span{display:block;width:22px;height:1.5px;background:var(--text-0);margin:5px auto;transition:transform .25s ease,opacity .25s ease}
.mobile-panel{position:fixed;inset:0;z-index:90;background:var(--bg-1);display:flex;flex-direction:column;justify-content:center;padding:96px 22px 40px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .25s ease,transform .25s ease,visibility .25s}
.mobile-panel.open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-panel a.m-link{font-size:22px;font-weight:600;color:var(--text-0);padding:14px 0;border-bottom:1px solid var(--line-3);opacity:0;transform:translateY(8px);animation:none}
.mobile-panel.open a.m-link{animation:mFade .4s ease forwards}
.mobile-panel a.m-link:nth-child(1){animation-delay:.02s}
.mobile-panel a.m-link:nth-child(2){animation-delay:.05s}
.mobile-panel a.m-link:nth-child(3){animation-delay:.08s}
.mobile-panel a.m-link:nth-child(4){animation-delay:.11s}
.mobile-panel a.m-link.active{color:var(--brand)}
@keyframes mFade{to{opacity:1;transform:translateY(0)}}
.mobile-panel .m-cta{margin-top:28px;display:flex;align-items:center;justify-content:center;height:52px;border-radius:var(--r-pill);font-weight:700;color:#06121B;background:linear-gradient(180deg,#58E0C8,#2FBFA6);box-shadow:var(--glow-brand)}
body.locked{overflow:hidden}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:14px 28px;border-radius:var(--r-pill);font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;transition:transform .2s ease,filter .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
.btn-primary{color:#06121B;background:linear-gradient(180deg,#58E0C8,#2FBFA6);box-shadow:var(--glow-brand)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(88,224,200,.5),0 12px 34px rgba(88,224,200,.3)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(88,224,200,.28),0 4px 14px rgba(88,224,200,.18)}
.btn-ghost{color:var(--text-0);background:transparent;border-color:var(--line-2)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(88,224,200,.4)}
.btn:disabled{opacity:.4;box-shadow:none;cursor:not-allowed}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-1);transition:color .2s ease}
.text-link .arw{transition:transform .2s ease}
.text-link:hover{color:var(--brand)}
.text-link:hover .arw{transform:translateX(4px)}

/* 通用装饰 */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--text-2);text-transform:uppercase;margin-bottom:16px}
.eyebrow::before{content:"";width:16px;height:1px;background:var(--brand);opacity:.7}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.section-head h2{max-width:640px}
.section-sub{margin-top:12px;font-size:15px;color:var(--text-1);max-width:640px}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.28}
h3{font-size:20px;font-weight:700;line-height:1.35}
h4{font-size:17px;font-weight:600;line-height:1.45}
.badge{display:inline-flex;align-items:center;height:24px;padding:4px 10px;font-size:12px;border-radius:var(--r-pill);border:1px solid var(--line-2);color:var(--text-1);white-space:nowrap}
.badge-brand{border-color:rgba(88,224,200,.5);color:var(--brand);background:rgba(88,224,200,.08)}
.badge-accent{border-color:rgba(255,178,122,.5);color:var(--accent);background:rgba(255,178,122,.08)}
.badge-mute{border-color:var(--line-2);color:var(--text-2)}
.glass-card{background:rgba(255,255,255,.05);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line-1);border-radius:var(--r-card);box-shadow:var(--glow-soft)}
.divider{height:1px;background:var(--line-1);border:0;margin:0}

/* Hero */
.hero{position:relative;padding:128px 0 96px;min-height:78vh;display:flex;align-items:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(900px 420px at 12% 8%,rgba(88,224,200,.07),transparent 70%),
             radial-gradient(700px 400px at 92% 82%,rgba(139,157,255,.06),transparent 72%);}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;width:100%}
.hero-badge-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.hero-title{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.02em;max-width:16em}
.hero-title em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:20px;font-size:17px;color:var(--text-1);max-width:30em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px}
.tag-pill{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--line-1);background:rgba(255,255,255,.03);font-size:12px;letter-spacing:.04em;color:var(--text-2)}
.tag-pill b{font-family:var(--mono);font-weight:600;color:var(--text-0);font-size:12px;letter-spacing:0}
.hero-media{position:relative;border-radius:var(--r-hero);overflow:hidden;box-shadow:var(--shadow-high);border:1px solid var(--line-1);aspect-ratio:5/6}
.hero-media img{width:100%;height:100%;object-fit:cover;background:var(--bg-2)}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,17,31,0) 38%,rgba(10,17,31,.88) 100%)}
.hero-media .cloud-line{position:absolute;left:0;right:0;bottom:0;height:60%;opacity:.5;pointer-events:none}
.hero-media .media-note{position:absolute;left:22px;right:22px;bottom:20px;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-1)}

/* 步骤条 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:8px}
.step{position:relative;padding-top:34px}
.step::before{content:"";position:absolute;top:5px;left:0;right:-24px;height:1px;background:linear-gradient(90deg,rgba(88,224,200,.45),rgba(255,255,255,.06))}
.step:last-child::before{right:0}
.step-node{position:absolute;top:0;left:0;width:11px;height:11px;border-radius:50%;background:var(--brand);box-shadow:0 0 12px rgba(88,224,200,.75)}
.step-no{font-family:var(--mono);font-size:13px;letter-spacing:.1em;color:var(--text-2);display:block;margin-bottom:10px}
.step h3{font-size:18px;margin-bottom:10px}
.step p{font-size:14px;color:var(--text-1);line-height:1.75;margin:0}
.step .step-icon{width:34px;height:34px;border-radius:10px;border:1px solid var(--line-1);background:rgba(255,255,255,.04);display:flex;align-items:center;justify-content:center;margin-bottom:14px;color:var(--brand)}

/* 权益预览 */
.benefit-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.benefit-main{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-1);background:var(--bg-1);display:flex;flex-direction:column}
.benefit-main img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--bg-2);border-radius:var(--r-card) var(--r-card) 0 0}
.benefit-main .corner{position:absolute;top:16px;left:16px;z-index:2;display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:12px;font-weight:700;color:#3A1D06;background:linear-gradient(180deg,#FFC79A,#FFB27A);box-shadow:0 6px 18px rgba(255,178,122,.28)}
.benefit-main .body{padding:26px 26px 28px}
.benefit-main h3{margin-bottom:10px}
.benefit-main p{font-size:14px;color:var(--text-1);margin:0}
.benefit-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.benefit-side .glass-card{padding:24px;display:flex;flex-direction:column;justify-content:space-between;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.benefit-side .glass-card:hover{transform:translateY(-4px);border-color:rgba(88,224,200,.4);box-shadow:var(--shadow-mid)}
.benefit-side h3{font-size:18px;margin-bottom:10px}
.benefit-side p{font-size:14px;color:var(--text-1);margin:0 0 18px}

/* 进度面板 */
.progress-panel{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:center;padding:32px;border-radius:var(--r-card)}
.progress-panel h3{margin-bottom:8px}
.progress-panel .p-note{font-size:14px;color:var(--text-1);margin:0}
.progress-track-wrap{display:flex;align-items:center;gap:18px}
.progress-track{position:relative;flex:1;height:10px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);overflow:hidden}
.progress-fill{position:relative;height:100%;width:0;border-radius:var(--r-pill);background:linear-gradient(90deg,#58E0C8,#FFB27A);transition:width .6s ease-out}
.progress-fill::after{content:"";position:absolute;right:5px;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:50%;background:#fff;box-shadow:0 0 10px rgba(255,178,122,.9)}
.progress-num{font-family:var(--mono);font-size:20px;font-weight:600;color:var(--text-0);min-width:64px;text-align:right}
.task-list{margin-top:32px;border-top:1px solid var(--line-3)}
.task-row{display:grid;grid-template-columns:24px 1fr auto;align-items:center;gap:16px;padding:16px 12px;border-bottom:1px solid var(--line-3);transition:background .2s ease}
.task-row:hover{background:rgba(255,255,255,.04)}
.task-row .t-title{font-size:15px;color:var(--text-0)}
.task-row .t-note{font-size:13px;color:var(--text-2);font-family:var(--mono)}
.tick{width:18px;height:18px;border-radius:50%;border:1px solid var(--line-2);position:relative;flex:0 0 auto;margin:0 auto}
.tick.done{background:var(--brand);border-color:var(--brand);box-shadow:0 0 10px rgba(88,224,200,.5)}
.tick.done::after{content:"";position:absolute;left:5px;top:6px;width:7px;height:3.5px;border-left:1.6px solid #06121B;border-bottom:1.6px solid #06121B;transform:rotate(-45deg)}
.state-pill{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;border:1px solid var(--line-2);color:var(--text-1)}
.state-pill.ok{color:var(--brand);border-color:rgba(88,224,200,.5);background:rgba(88,224,200,.08)}
.state-pill.doing{color:var(--accent);border-color:rgba(255,178,122,.5);background:rgba(255,178,122,.08)}
.state-pill.wait{color:var(--text-2)}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{border-radius:var(--r-card);border:1px solid var(--line-1);background:rgba(255,255,255,.04);padding:18px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.news-card:hover{transform:translateY(-3px);border-color:rgba(88,224,200,.4);box-shadow:var(--shadow-mid)}
.news-card .n-link{display:flex;flex-direction:column;height:100%}
.news-thumb{width:100%;aspect-ratio:16/10;border-radius:var(--r-sm);overflow:hidden;background:var(--bg-2);margin-bottom:16px}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-card h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--text-0)}
.news-card:hover h3{color:var(--brand)}
.news-card .n-sum{font-size:14px;color:var(--text-1);line-height:1.7;margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:8px;margin-top:auto;font-size:12px;color:var(--text-2);font-family:var(--mono)}
.news-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-2);opacity:.7}
.news-meta .cat{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);border:1px solid var(--line-2);font-family:var(--font);font-size:12px;color:var(--text-1);transition:border-color .2s ease,color .2s ease}
.news-card:hover .news-meta .cat{border-color:rgba(88,224,200,.55);color:var(--brand)}
.news-card .n-arw{position:absolute}
.news-feature{grid-column:span 2;display:block}
.news-feature .n-link{display:grid;grid-template-columns:220px 1fr;gap:22px;align-items:stretch}
.news-feature .news-thumb{margin-bottom:0;height:100%;aspect-ratio:auto;min-height:150px}
.news-feature h3{font-size:19px}
.news-feature .n-sum{font-size:14px}
.empty-state{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;padding:56px 24px;border:1px dashed var(--line-2);border-radius:var(--r-card);background:rgba(255,255,255,.03)}
.empty-state svg{opacity:.6}
.empty-state p{font-size:14px;color:var(--text-1);margin:0}

/* 信任条 */
.trust-bar{border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);padding:26px 0}
.trust-items{display:flex;flex-wrap:wrap;justify-content:space-between;gap:20px}
.trust-items span{font-size:12px;letter-spacing:.06em;color:var(--text-2)}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.faq-item{border-bottom:1px solid var(--line-1)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;background:transparent;border:0;color:var(--text-0);font-size:16px;font-weight:600;text-align:left;padding:22px 2px;cursor:pointer;min-height:44px}
.faq-q .sign{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--text-1);transition:transform .3s ease,background .2s ease}
.faq-q .sign::before{left:0;right:0;top:9.25px;height:1.5px}
.faq-q .sign::after{top:0;bottom:0;left:9.25px;width:1.5px}
.faq-item.open .faq-q .sign::after{transform:scaleY(0)}
.faq-item.open .faq-q .sign::before{background:var(--brand)}
.faq-item.open .faq-q{color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{font-size:14px;color:var(--text-1);line-height:1.8;padding:0 2px 22px;margin:0;max-width:52ch}

/* 底部 CTA */
.cta-band{position:relative;background:var(--bg-1);border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);padding:96px 0;overflow:hidden;text-align:center}
.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:48px 48px;opacity:.6}
.cta-band .inner{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:18px}
.cta-band h2{max-width:20em}
.cta-band p{font-size:15px;color:var(--text-1);margin:0}

/* 页脚 */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line-1);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1.5fr 1.5fr 1.5fr;gap:40px}
.footer-brand p{font-size:14px;color:var(--text-1);margin:16px 0 0;max-width:30ch}
.footer-col h4{font-size:14px;color:var(--text-0);margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:var(--text-1);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(-2px)}
.footer-col .contact-line{font-size:14px;color:var(--text-1);font-family:var(--mono)}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--line-3);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-2)}

/* 响应式 */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero{padding:112px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{aspect-ratio:16/10;max-width:640px}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px}
  .step:nth-child(2)::before{right:0}
  .benefit-grid{grid-template-columns:1fr}
  .progress-panel{grid-template-columns:1fr;gap:24px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-feature{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:834px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:block}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .hero{min-height:auto;padding:104px 0 56px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
  .faq-grid{grid-template-columns:1fr;gap:0}
  .cta-band{padding:56px 0}
  .news-grid{grid-template-columns:1fr}
  .news-feature{grid-column:span 1}
  .news-feature .n-link{grid-template-columns:1fr}
  .news-feature .news-thumb{aspect-ratio:16/10;min-height:0}
  .trust-items{justify-content:flex-start;gap:14px 24px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:0 0 28px 26px;border-left:1px solid var(--line-1)}
  .step:last-child{border-left-color:transparent}
  .step::before{display:none}
  .step-node{top:6px;left:-6px}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .task-row{grid-template-columns:24px 1fr;gap:12px}
  .task-row .state-pill{grid-column:2}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#0A111F;
  --bg-1:#0F1A2E;
  --bg-2:#16243D;
  --bg-3:#1B2B47;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.18);
  --line-3:rgba(255,255,255,.06);
  --text-0:#EAF1FB;
  --text-1:#A9B7CC;
  --text-2:#6E7C93;
  --brand:#58E0C8;
  --brand-deep:#1E9E8C;
  --accent:#FFB27A;
  --accent-2:#8B9DFF;
  --success:#4ADE80;
  --warning:#FBBF24;
  --danger:#F87171;
  --disabled:rgba(255,255,255,.28);
  --glow-brand:0 0 0 1px rgba(88,224,200,.35),0 8px 30px rgba(88,224,200,.22);
  --glow-soft:0 0 0 1px rgba(255,255,255,.14),0 6px 24px rgba(0,0,0,.35);
  --shadow-soft:0 4px 16px rgba(0,0,0,.28);
  --shadow-mid:0 10px 30px rgba(0,0,0,.38);
  --shadow-high:0 18px 48px rgba(0,0,0,.5);
  --r-hero:24px;
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --r-pill:999px;
  --font-sans:"HarmonyOS Sans","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text-0);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(1100px 620px at 8% -12%,rgba(88,224,200,.07),transparent 62%),
    radial-gradient(900px 520px at 102% 2%,rgba(139,157,255,.06),transparent 58%),
    linear-gradient(var(--line-3) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-3) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-attachment:fixed,fixed,scroll,scroll;
  text-align:left;
}
img{max-width:100%;display:block;border-style:none;background-color:var(--bg-2);}
a{color:inherit;text-decoration:none;transition:color .24s ease,opacity .24s ease;}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;color:var(--text-0);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
table{width:100%;border-collapse:collapse;}
time{font-family:var(--font-mono);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  background:rgba(10,17,31,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:height .28s ease,background .28s ease,border-color .28s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(10,17,31,.78);
  border-bottom-color:var(--line-1);
}
.nav-wrap{display:flex;align-items:center;gap:32px;width:100%;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text-0);
  white-space:nowrap;
}
.brand-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(88,224,200,.85);
  flex:0 0 auto;
}
.brand:hover{color:var(--brand);}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-1);
  padding:6px 2px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;right:50%;bottom:0;
  height:1px;
  background:var(--brand);
  transition:left .24s ease,right .24s ease;
}
.nav-link:hover{color:var(--text-0);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.active{
  color:var(--text-0);
  border:1px solid rgba(88,224,200,.45);
  border-radius:var(--r-pill);
  padding:4px 14px;
  background:rgba(88,224,200,.06);
}
.nav-link.active::after{display:none;}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 24px;
  font-size:15px;
  font-weight:700;
  color:#06121B;
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  box-shadow:0 0 0 1px rgba(88,224,200,.28),0 6px 20px rgba(88,224,200,.16);
  transition:filter .24s ease,transform .2s ease,box-shadow .24s ease;
}
.nav-cta:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--glow-brand);}
.nav-cta:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(88,224,200,.22);}
.nav-cta-mobile{display:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
}
.nav-toggle span{display:block;width:22px;height:1px;background:var(--text-0);transition:transform .24s ease,opacity .24s ease;}
body.menu-open .nav-toggle span:first-child{transform:translateY(3.5px) rotate(45deg);}
body.menu-open .nav-toggle span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 28px;
  font-size:15px;
  font-weight:700;
  border-radius:var(--r-pill);
  transition:filter .24s ease,transform .2s ease,box-shadow .24s ease,background .24s ease,border-color .24s ease;
}
.btn-primary{
  color:#06121B;
  background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  box-shadow:0 0 0 1px rgba(88,224,200,.30),0 8px 26px rgba(88,224,200,.18);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--glow-brand);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(88,224,200,.22);}
.btn-ghost{
  color:var(--text-0);
  background:rgba(255,255,255,.02);
  border:1px solid var(--line-2);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(88,224,200,.4);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  font-size:12px;
  line-height:1;
  letter-spacing:.04em;
  color:var(--text-1);
  border:1px solid var(--line-2);
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.03);
}
.badge-brand{color:var(--brand);border-color:rgba(88,224,200,.45);background:rgba(88,224,200,.07);}
.badge-accent{color:var(--accent);border-color:rgba(255,178,122,.42);background:rgba(255,178,122,.07);}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text-2);
  margin-bottom:16px;
  font-family:var(--font-mono);
}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.28;}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-1);max-width:560px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-1);white-space:nowrap;}
.text-link span{transition:transform .24s ease;}
.text-link:hover{color:var(--brand);}
.text-link:hover span{transform:translateX(4px);}
.glass{
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-1);
  border-radius:var(--r-card);
}
.divider{height:1px;background:var(--line-1);border:0;margin:0;}

/* ---------- 文章头部 ---------- */
.article-hero{position:relative;padding:calc(var(--nav-h) + 56px) 0 48px;overflow:hidden;border-bottom:1px solid var(--line-1);}
.article-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.20;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.35) 70%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.35) 70%,transparent 100%);
  pointer-events:none;
}
.article-hero > .container{position:relative;z-index:1;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:24px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line-2);}
.breadcrumb-current{max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-1);}
.article-title{
  position:relative;
  font-size:clamp(30px,4.2vw,52px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.02em;
  padding-left:18px;
  max-width:900px;
}
.article-title::before{
  content:"";
  position:absolute;left:0;top:.22em;
  width:3px;height:.78em;
  border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 12px rgba(88,224,200,.5);
}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:24px;font-size:13px;color:var(--text-2);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line-2);}
.meta-row .badge{height:26px;}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:64px;
  align-items:start;
  padding:64px 32px 96px;
  max-width:1200px;
  margin:0 auto;
}
.article-main{max-width:760px;}
.article-content{font-size:16px;line-height:1.85;color:var(--text-0);}
.article-content p{margin:0 0 1em;color:var(--text-1);}
.article-content h2{
  position:relative;
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
  line-height:1.28;
  margin:56px 0 16px;
  padding-left:16px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.35em;
  width:3px;height:20px;border-radius:2px;background:var(--brand);
}
.article-content h3{font-size:20px;font-weight:700;line-height:1.35;margin:32px 0 12px;}
.article-content h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.article-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:#7FEBD9;}
.article-content strong{color:var(--text-0);font-weight:700;}
.article-content ul{margin:0 0 1em;}
.article-content ul li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--text-1);}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:6px;height:6px;border-radius:1px;background:var(--brand);
}
.article-content ol{counter-reset:ol-item;margin:0 0 1em;}
.article-content ol li{position:relative;padding-left:30px;margin-bottom:10px;color:var(--text-1);}
.article-content ol li::before{
  counter-increment:ol-item;
  content:counter(ol-item,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-family:var(--font-mono);font-size:13px;line-height:1.85;color:var(--brand);
}
.article-content blockquote{
  margin:24px 0;
  padding:20px 24px;
  border-left:2px solid var(--line-2);
  background:rgba(255,255,255,.03);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--text-1);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--r-img);margin:24px auto;width:auto;max-width:100%;}
.article-content figure{margin:24px 0;}
.article-content figcaption{font-size:13px;color:var(--text-2);text-align:center;margin-top:10px;}
.article-content table{margin:24px 0;font-size:15px;border:1px solid var(--line-1);}
.article-content th{
  font-size:13px;letter-spacing:.04em;color:var(--text-1);
  text-align:left;padding:12px 16px;border-bottom:1px solid var(--line-1);font-weight:600;
}
.article-content td{padding:12px 16px;border-bottom:1px solid var(--line-1);color:var(--text-1);}
.article-content tr:last-child td{border-bottom:0;}
.article-content code{
  font-family:var(--font-mono);font-size:14px;
  padding:2px 6px;border-radius:6px;
  background:rgba(255,255,255,.06);color:var(--brand);
}
.article-content hr{border:0;height:1px;background:var(--line-1);margin:40px 0;}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:48px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  font-size:12px;letter-spacing:.04em;color:var(--text-1);
  border:1px solid var(--line-2);border-radius:var(--r-pill);
  transition:color .24s ease,border-color .24s ease,background .24s ease;
}
.tag:hover{color:var(--brand);border-color:rgba(88,224,200,.5);background:rgba(88,224,200,.06);}

.article-foot{margin-top:32px;padding-top:32px;border-top:1px solid var(--line-1);display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;}
.article-foot .note{font-size:13px;color:var(--text-2);}

.empty-state{
  padding:56px 32px;
  text-align:center;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-1);
  border-radius:var(--r-card);
}
.empty-state svg{width:40px;height:40px;margin:0 auto 16px;display:block;stroke:var(--text-2);}
.empty-state h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.empty-state p{font-size:14px;color:var(--text-1);margin-bottom:24px;}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:104px;align-self:start;display:flex;flex-direction:column;gap:20px;}
.aside-card{padding:24px;border-radius:var(--r-card);}
.aside-card h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text-2);margin-bottom:18px;font-family:var(--font-mono);}
.aside-list li + li{margin-top:16px;padding-top:16px;border-top:1px solid var(--line-3);}
.aside-list a{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.6;color:var(--text-1);}
.aside-list a:hover{color:var(--brand);}
.aside-list .idx{font-family:var(--font-mono);font-size:12px;color:var(--text-2);flex:0 0 auto;padding-top:2px;}
.aside-tip{font-size:13px;color:var(--text-2);line-height:1.8;margin-top:16px;}
.aside-card .btn{width:100%;margin-top:20px;}

/* ---------- 相关推荐 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  display:flex;flex-direction:column;
  background:var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.related-card:hover{transform:translateY(-3px);border-color:rgba(88,224,200,.4);box-shadow:var(--shadow-mid);}
.related-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;}
.related-body{padding:20px 22px 24px;}
.related-body h3{font-size:16px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card:hover h3{color:var(--text-0);}
.related-body p{margin-top:10px;font-size:14px;color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-meta{margin-top:16px;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-2);font-family:var(--font-mono);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;
  margin-top:24px;
  padding:96px 0;
  background:var(--bg-1);
  border-top:1px solid var(--line-1);
  text-align:center;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.16;pointer-events:none;
}
.cta-inner{position:relative;z-index:1;max-width:640px;margin:0 auto;}
.cta-inner h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;}
.cta-inner p{margin-top:14px;font-size:15px;color:var(--text-1);}
.cta-inner .btn{margin-top:32px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line-1);padding:72px 0 32px;}
.footer-grid{display:grid;grid-template-columns:2fr 1.5fr 1.5fr 1.5fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--text-1);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text-0);margin-bottom:18px;}
.footer-col li + li{margin-top:12px;}
.footer-col a,.contact-line{font-size:14px;color:var(--text-1);}
.footer-col a:hover{color:var(--brand);}
.footer-col a{display:inline-block;transition:transform .24s ease,color .24s ease;}
.footer-col a:hover{transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid var(--line-3);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .article-layout{gap:48px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:minmax(0,1fr);padding:56px 24px 80px;}
  .article-main{max-width:760px;margin:0 auto;width:100%;}
  .article-aside{display:none;}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:834px){
  .section{padding:72px 0;}
  .related-grid{grid-template-columns:1fr;}
  .related-card{flex-direction:row;align-items:stretch;}
  .related-thumb{width:160px;aspect-ratio:auto;min-height:120px;flex:0 0 160px;border-radius:0;}
  .cta-band{padding:72px 0;}
}
@media (max-width:768px){
  :root{--nav-h:64px;}
  .site-header{height:var(--nav-h);}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-links{
    position:fixed;
    top:var(--nav-h);left:0;right:0;bottom:0;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    margin:0;
    padding:24px 24px 40px;
    background:var(--bg-1);
    border-top:1px solid var(--line-1);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .26s ease,visibility .26s ease,transform .26s ease;
  }
  body.menu-open .nav-links{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-link{
    width:100%;
    font-size:22px;
    padding:18px 0;
    border-bottom:1px solid var(--line-3);
    opacity:0;
    animation:none;
  }
  body.menu-open .nav-link{animation:fadeUp .34s ease forwards;}
  body.menu-open .nav-link:nth-child(1){animation-delay:.04s;}
  body.menu-open .nav-link:nth-child(2){animation-delay:.10s;}
  body.menu-open .nav-link:nth-child(3){animation-delay:.16s;}
  body.menu-open .nav-link:nth-child(4){animation-delay:.22s;}
  .nav-link.active{
    border:1px solid rgba(88,224,200,.45);
    border-radius:var(--r-sm);
    padding:18px 14px;
    background:rgba(88,224,200,.06);
  }
  .nav-cta-mobile{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:100%;
    min-height:50px;
    margin-top:28px;
    font-size:16px;
    font-weight:700;
    color:#06121B;
    border-radius:var(--r-pill);
    background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  }
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .article-hero{padding:calc(var(--nav-h) + 40px) 0 36px;}
  .article-title{padding-left:14px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .article-layout{padding:44px 18px 64px;}
  .section{padding:56px 0;}
  .related-card{flex-direction:column;}
  .related-thumb{width:100%;aspect-ratio:16/9;flex:none;min-height:0;}
  .cta-band{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .breadcrumb-current{max-width:180px;}
  .article-content h2{margin-top:40px;}
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(10px);}
  to{opacity:1;transform:translateY(0);}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --bg-0:#0A111F;
  --bg-1:#0F1A2E;
  --bg-2:#16243D;
  --bg-3:#1B2B47;
  --line-1:rgba(255,255,255,0.10);
  --line-2:rgba(255,255,255,0.18);
  --line-3:rgba(255,255,255,0.06);
  --text-0:#EAF1FB;
  --text-1:#A9B7CC;
  --text-2:#6E7C93;
  --brand:#58E0C8;
  --brand-deep:#1E9E8C;
  --accent:#FFB27A;
  --accent-2:#8B9DFF;
  --success:#4ADE80;
  --warning:#FBBF24;
  --danger:#F87171;
  --disabled:rgba(255,255,255,0.28);
  --glow-brand:0 0 0 1px rgba(88,224,200,0.35), 0 8px 30px rgba(88,224,200,0.22);
  --glow-soft:0 0 0 1px rgba(255,255,255,0.14), 0 6px 24px rgba(0,0,0,0.35);
  --shadow-soft:0 4px 16px rgba(0,0,0,.28);
  --shadow-mid:0 10px 30px rgba(0,0,0,.38);
  --shadow-high:0 18px 48px rgba(0,0,0,.5);
  --radius-hero:24px;
  --radius-card:18px;
  --radius-sm:12px;
  --radius-img:14px;
  --container:1200px;
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::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-0);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  text-align:left;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size:64px 64px, 64px 64px;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
: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 32px;
  position:relative;
  z-index:1;
}
.skip-link{
  position:absolute;left:-9999px;top:0;
  background:var(--bg-3);color:var(--text-0);padding:10px 18px;border-radius:var(--radius-sm);z-index:100;
}
.skip-link:focus{left:16px;top:16px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:50;
  transition:height .28s ease, background .28s ease, border-color .28s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(10,17,31,0.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-1);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:32px;
  height:76px;
  transition:height .28s ease;
}
.site-header.scrolled .nav-wrap{height:64px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-0.01em;
  color:var(--text-0);
  white-space:nowrap;
}
.brand-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(88,224,200,0.8);
  flex:0 0 auto;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-1);
  padding:6px 2px;
  transition:color .22s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;right:50%;
  bottom:0;
  height:2px;
  background:var(--brand);
  border-radius:2px;
  transition:left .24s ease, right .24s ease;
}
.nav-link:hover{color:var(--text-0);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.active{
  color:var(--text-0);
  padding:6px 14px;
  border:1px solid rgba(88,224,200,0.45);
  border-radius:999px;
  background:rgba(88,224,200,0.07);
}
.nav-link.active::after{display:none;}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 22px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:700;
  color:#06121B;
  background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  box-shadow:var(--glow-brand);
  transition:transform .2s ease, filter .2s ease, box-shadow .2s ease;
  white-space:nowrap;
}
.nav-cta:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(88,224,200,0.5),0 12px 34px rgba(88,224,200,0.3);}
.nav-cta:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(88,224,200,0.3),0 4px 14px rgba(88,224,200,0.18);}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:6px;
  width:44px;height:44px;
  margin-left:auto;
  border-radius:10px;
}
.nav-toggle span{
  display:block;
  width:22px;height:1.5px;
  margin:0 auto;
  background:var(--text-0);
  border-radius:2px;
  transition:transform .26s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.75px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.75px) rotate(-45deg);}

.mobile-panel{
  position:fixed;
  inset:0;
  z-index:49;
  background:var(--bg-1);
  padding:110px 24px 40px;
  display:flex;
  flex-direction:column;
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .28s ease, transform .28s ease, visibility .28s;
}
.mobile-panel.open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-panel a.m-panel-link{
  font-size:22px;
  font-weight:600;
  color:var(--text-0);
  padding:16px 0;
  border-bottom:1px solid var(--line-3);
  opacity:0;
  transform:translateY(6px);
}
.mobile-panel.open a.m-panel-link{animation:panelIn .34s ease forwards;}
.mobile-panel a.m-panel-link:nth-child(1){animation-delay:12ms;}
.mobile-panel a.m-panel-link:nth-child(2){animation-delay:24ms;}
.mobile-panel a.m-panel-link:nth-child(3){animation-delay:36ms;}
.mobile-panel a.m-panel-link:nth-child(4){animation-delay:48ms;}
@keyframes panelIn{to{opacity:1;transform:translateY(0);}}
.mobile-panel .nav-cta{margin-top:auto;width:100%;min-height:52px;font-size:16px;}

/* ---------- page hero ---------- */
main{padding-top:76px;position:relative;z-index:1;}
.page-hero{
  padding:72px 0 56px;
  border-bottom:1px solid var(--line-1);
  position:relative;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-120px;top:-80px;
  width:520px;height:340px;
  background:radial-gradient(closest-side, rgba(88,224,200,0.14), transparent 72%);
  pointer-events:none;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.crumb a{color:var(--text-2);transition:color .2s ease;}
.crumb a:hover{color:var(--brand);}
.crumb .sep{opacity:.55;}
.page-hero h1{
  font-size:clamp(30px,4.2vw,52px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-0.02em;
  max-width:900px;
}
.page-hero .lead{
  margin-top:18px;
  font-size:17px;
  color:var(--text-1);
  max-width:640px;
  line-height:1.75;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:30px;
}
.tag-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line-1);
  background:rgba(255,255,255,0.03);
  font-size:12px;
  letter-spacing:0.04em;
  color:var(--text-1);
}
.tag-pill b{
  font-family:var(--font-num);
  font-weight:700;
  color:var(--brand);
  letter-spacing:0;
}

/* ---------- section basics ---------- */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:0.08em;
  color:var(--brand);
  margin-bottom:14px;
  text-transform:uppercase;
}
h2.sec-title{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:-0.01em;
}
.sec-sub{
  margin-top:14px;
  font-size:15px;
  color:var(--text-1);
  max-width:640px;
  line-height:1.8;
}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.sec-head .right-link{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--text-1);
  transition:color .2s ease;
}
.sec-head .right-link .arrow{transition:transform .2s ease;}
.sec-head .right-link:hover{color:var(--brand);}
.sec-head .right-link:hover .arrow{transform:translateX(4px);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:14px 28px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  transition:transform .2s ease, filter .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.btn-primary{
  color:#06121B;
  background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  box-shadow:0 0 0 1px rgba(88,224,200,0.30), 0 8px 26px rgba(88,224,200,0.20);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(88,224,200,0.5),0 12px 34px rgba(88,224,200,0.3);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(88,224,200,0.28),0 4px 14px rgba(88,224,200,0.16);}
.btn-primary[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;}
.btn-ghost{
  color:var(--text-0);
  background:transparent;
  border:1px solid var(--line-2);
}
.btn-ghost:hover{background:rgba(255,255,255,0.06);border-color:rgba(88,224,200,0.4);}
.btn-ghost:active{transform:translateY(1px);}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}

/* ---------- split ---------- */
.split{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.split.reverse{grid-template-columns:5fr 7fr;}
.split-media{
  border-radius:var(--radius-hero);
  overflow:hidden;
  border:1px solid var(--line-1);
  box-shadow:var(--shadow-mid);
  background:var(--bg-2);
  position:relative;
}
.split-media img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
}
.split-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(10,17,31,0) 45%, rgba(10,17,31,0.55) 100%);
  pointer-events:none;
}
.split-copy p{
  margin-top:18px;
  color:var(--text-1);
  font-size:16px;
  line-height:1.85;
  max-width:720px;
}
.check-list{margin-top:28px;display:grid;gap:14px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--text-1);
  line-height:1.75;
}
.check-list li .dot{
  flex:0 0 auto;
  width:6px;height:6px;
  margin-top:10px;
  border-radius:2px;
  background:var(--brand);
}
.check-list li b{color:var(--text-0);font-weight:600;}

/* ---------- key point cards ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.point-card{
  background:var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:var(--radius-card);
  padding:28px 26px;
  transition:border-color .24s ease, transform .24s ease, box-shadow .24s ease;
}
.point-card:hover{
  border-color:rgba(88,224,200,0.35);
  transform:translateY(-3px);
  box-shadow:var(--shadow-mid);
}
.point-card .num{
  font-family:var(--font-num);
  font-size:13px;
  font-weight:700;
  letter-spacing:0.06em;
  color:var(--brand);
}
.point-card h3{
  margin-top:14px;
  font-size:18px;
  font-weight:700;
  line-height:1.4;
}
.point-card p{
  margin-top:12px;
  font-size:14px;
  color:var(--text-1);
  line-height:1.8;
}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:0.02em;
  border:1px solid var(--line-2);
  color:var(--text-1);
  white-space:nowrap;
}
.badge.brand{border-color:rgba(88,224,200,0.5);color:var(--brand);background:rgba(88,224,200,0.07);}
.badge.gold{border-color:rgba(255,178,122,0.5);color:var(--accent);background:rgba(255,178,122,0.07);}
.badge.grey{border-color:var(--line-1);color:var(--text-2);}
.point-card .badge-row{margin-top:18px;display:flex;gap:8px;flex-wrap:wrap;}

/* ---------- flow strip ---------- */
.flow-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  margin-top:8px;
  position:relative;
}
.flow-step{
  position:relative;
  padding:0 24px 0 0;
}
.flow-step::before{
  content:"";
  position:absolute;
  top:5px;left:14px;right:0;
  height:1px;
  background:linear-gradient(90deg, rgba(88,224,200,0.42), rgba(255,255,255,0.06));
}
.flow-step:last-child::before{background:linear-gradient(90deg, rgba(88,224,200,0.42), transparent);}
.flow-step .node{
  position:relative;
  width:10px;height:10px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(88,224,200,0.14);
  margin-bottom:24px;
}
.flow-step .step-idx{
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:0.08em;
  color:var(--text-2);
}
.flow-step h3{
  margin-top:8px;
  font-size:17px;
  font-weight:700;
}
.flow-step p{
  margin-top:10px;
  font-size:14px;
  color:var(--text-1);
  line-height:1.78;
  max-width:240px;
}

/* ---------- glass cards ---------- */
.glass{
  background:rgba(255,255,255,0.05);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-1);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
}
.scene-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:24px;
}
.scene-main{
  position:relative;
  overflow:hidden;
  padding:0;
}
.scene-main img{
  width:100%;
  height:100%;
  min-height:280px;
  object-fit:cover;
}
.scene-main .scene-overlay{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:26px 24px;
  background:linear-gradient(180deg, rgba(10,17,31,0) 0%, rgba(10,17,31,0.86) 78%);
}
.scene-main .scene-overlay h3{font-size:18px;font-weight:700;}
.scene-main .scene-overlay p{margin-top:8px;font-size:14px;color:var(--text-1);line-height:1.75;}
.scene-list{display:grid;gap:16px;}
.scene-item{
  padding:22px 24px;
  transition:border-color .24s ease, transform .24s ease, background .24s ease;
}
.scene-item:hover{
  border-color:rgba(88,224,200,0.4);
  transform:translateY(-4px);
  background:rgba(255,255,255,0.07);
}
.scene-item h3{font-size:17px;font-weight:700;}
.scene-item p{margin-top:8px;font-size:14px;color:var(--text-1);line-height:1.78;}

/* ---------- notice rows ---------- */
.row-list{border-top:1px solid var(--line-3);}
.row-item{
  display:flex;
  align-items:center;
  gap:24px;
  padding:22px 0 22px 18px;
  border-bottom:1px solid var(--line-3);
  position:relative;
  transition:background .2s ease;
}
.row-item::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:0;
  background:var(--brand);
  border-radius:2px;
  transition:height .24s ease;
}
.row-item:hover{background:rgba(255,255,255,0.04);}
.row-item:hover::before{height:44%;}
.row-item h3{
  flex:0 0 260px;
  font-size:17px;
  font-weight:700;
  line-height:1.5;
}
.row-item p{
  flex:1;
  font-size:14px;
  color:var(--text-1);
  line-height:1.75;
}
.row-item .badge{flex:0 0 auto;}

/* ---------- trust bar ---------- */
.trust-bar{
  border-top:1px solid var(--line-1);
  border-bottom:1px solid var(--line-1);
  padding:26px 0;
}
.trust-inner{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:18px 32px;
}
.trust-inner span{
  font-size:12px;
  letter-spacing:0.06em;
  color:var(--text-2);
}

/* ---------- faq ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 48px;
}
.faq-item{border-bottom:1px solid var(--line-3);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  font-size:16px;
  font-weight:600;
  color:var(--text-0);
  text-align:left;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--brand);
  border-radius:2px;
  transition:transform .3s ease, opacity .3s ease;
}
.faq-icon::before{width:14px;height:1.5px;transform:translate(-50%,-50%);}
.faq-icon::after{width:1.5px;height:14px;transform:translate(-50%,-50%);}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a p{
  padding:0 24px 22px 0;
  font-size:14px;
  color:var(--text-1);
  line-height:1.8;
}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--bg-1);
  border-top:1px solid var(--line-1);
  border-bottom:1px solid var(--line-1);
  padding:96px 0;
  position:relative;
  overflow:hidden;
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.cta-band .container{position:relative;}
.cta-band h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
  line-height:1.3;
}
.cta-band p{
  margin-top:16px;
  font-size:15px;
  color:var(--text-1);
}
.cta-band .btn{margin-top:34px;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line-1);
  padding:72px 0 32px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1.5fr 1.5fr 1.5fr;
  gap:48px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--text-1);
  line-height:1.8;
  max-width:300px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  letter-spacing:0.04em;
  color:var(--text-0);
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:12px;}
.footer-col a,.footer-col .contact-line{
  font-size:14px;
  color:var(--text-1);
  transition:color .2s ease, transform .2s ease;
  display:inline-block;
}
.footer-col a:hover{color:var(--brand);transform:translateX(-2px);}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--line-3);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-2);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .section.tight{padding:56px 0;}
  .split,.split.reverse{grid-template-columns:1fr;gap:36px;}
  .split.reverse .split-media{order:-1;}
  .scene-grid{grid-template-columns:1fr;}
  .flow-strip{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:40px;}
  .flow-step{padding-right:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px;}
  .cta-band{padding:72px 0;}
}
@media (max-width:834px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .faq-grid{grid-template-columns:1fr;}
  .row-item{flex-wrap:wrap;gap:10px;}
  .row-item h3{flex:1 1 100%;}
  .row-item p{flex:1 1 100%;}
}
@media (max-width:768px){
  .card-grid{grid-template-columns:1fr;}
  .page-hero{padding:48px 0 40px;}
  .hero-tags{gap:8px;}
  .btn-row{gap:12px;}
  .btn{width:100%;}
  .btn-row .btn{width:100%;}
  .cta-band .btn{width:auto;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section.tight{padding:48px 0;}
  .flow-strip{grid-template-columns:1fr;row-gap:0;}
  .flow-step{padding:0 0 0 24px;}
  .flow-step::before{top:0;bottom:0;left:5px;right:auto;width:1px;height:auto;background:linear-gradient(180deg, rgba(88,224,200,0.42), rgba(255,255,255,0.06));}
  .flow-step .node{margin-bottom:14px;}
  .flow-step p{max-width:none;margin-bottom:32px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;}
  .brand{font-size:15.5px;}
  .row-item{padding:18px 0 18px 14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg-0:#0A111F;
  --bg-1:#0F1A2E;
  --bg-2:#16243D;
  --bg-3:#1B2B47;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.18);
  --line-3:rgba(255,255,255,.06);
  --text-0:#EAF1FB;
  --text-1:#A9B7CC;
  --text-2:#6E7C93;
  --brand:#58E0C8;
  --brand-deep:#1E9E8C;
  --accent:#FFB27A;
  --accent-2:#8B9DFF;
  --success:#4ADE80;
  --warning:#FBBF24;
  --danger:#F87171;
  --disabled:rgba(255,255,255,.28);
  --glow-brand:0 0 0 1px rgba(88,224,200,.35),0 8px 30px rgba(88,224,200,.22);
  --glow-soft:0 0 0 1px rgba(255,255,255,.14),0 6px 24px rgba(0,0,0,.35);
  --shadow-soft:0 4px 16px rgba(0,0,0,.28);
  --shadow-mid:0 10px 30px rgba(0,0,0,.38);
  --shadow-high:0 18px 48px rgba(0,0,0,.5);
  --r-hero:24px;
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --r-pill:999px;
  --container:1200px;
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:Inter,"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(1100px 560px at 80% -12%, rgba(88,224,200,.09), transparent 62%),
    radial-gradient(880px 480px at 4% 10%, rgba(139,157,255,.06), transparent 64%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,72px 72px,72px 72px;
  color:var(--text-0);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease,background-color .22s ease,border-color .22s ease,transform .22s ease}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.section-head .head-l{max-width:620px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;line-height:1.6;
  color:var(--text-2);border:1px solid var(--line-1);border-radius:var(--r-pill);
  padding:3px 12px;margin-bottom:16px;text-transform:uppercase;
}
h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.02em}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.28;letter-spacing:-.01em}
h3{font-size:20px;font-weight:700;line-height:1.35}
h4{font-size:17px;font-weight:600;line-height:1.5}
p{color:var(--text-1)}
.lead{font-size:16px;line-height:1.85}

/* ===== header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:76px;display:flex;align-items:center;
  background:rgba(10,17,31,0);
  transition:height .28s ease,background-color .28s ease,backdrop-filter .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(10,17,31,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 -1px 0 var(--line-1);
}
.nav-wrap{display:flex;align-items:center;gap:32px;width:100%}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text-0);white-space:nowrap;
}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(88,224,200,.8);flex:none}
.brand:hover{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;color:var(--text-1);padding:8px 14px;border-radius:var(--r-pill);
  border:1px solid transparent;line-height:1.4;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:1px;background:var(--brand);
  transition:left .24s ease,right .24s ease;
}
.nav-link:hover{color:var(--text-0)}
.nav-link:hover::after{left:14px;right:14px}
.nav-link.active{color:var(--text-0);border-color:rgba(88,224,200,.42);background:rgba(88,224,200,.06)}
.nav-link.active::after{display:none}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:11px 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;color:#06121B;
  background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  box-shadow:var(--glow-soft);white-space:nowrap;
}
.nav-cta:hover{filter:brightness(1.06);box-shadow:var(--glow-brand);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(1px);box-shadow:var(--glow-soft)}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  align-items:center;justify-content:center;flex-direction:column;gap:6px;
  border-radius:var(--r-sm);border:1px solid var(--line-1);
}
.nav-toggle span{display:block;width:22px;height:1.5px;background:var(--text-0);transition:transform .26s ease,opacity .26s ease}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.75px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.75px) rotate(-45deg)}
.mobile-panel{
  position:fixed;inset:0;z-index:70;display:none;flex-direction:column;
  background:var(--bg-1);padding:112px 24px 32px;overflow-y:auto;
}
.mobile-panel.is-open{display:flex}
.mobile-nav{display:flex;flex-direction:column;gap:6px}
.mobile-nav a{
  font-size:22px;font-weight:600;color:var(--text-1);padding:14px 4px;
  border-bottom:1px solid var(--line-3);opacity:0;transform:translateY(8px);
  animation:fadeUp .32s ease forwards;
}
.mobile-nav a.active{color:var(--brand)}
.mobile-nav a:nth-child(1){animation-delay:.02s}
.mobile-nav a:nth-child(2){animation-delay:.05s}
.mobile-nav a:nth-child(3){animation-delay:.08s}
.mobile-nav a:nth-child(4){animation-delay:.11s}
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}
.mobile-cta{width:100%;margin-top:auto;margin-top:32px}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1.2;border:1px solid transparent;
  transition:all .22s ease;
}
.btn-primary{
  color:#06121B;background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  box-shadow:var(--glow-soft);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:var(--glow-brand);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--glow-soft)}
.btn-primary[disabled],.btn-primary.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed}
.btn-ghost{
  color:var(--text-0);background:transparent;border-color:var(--line-2);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(88,224,200,.4);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px;min-height:44px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-1);white-space:nowrap}
.link-more .arrow{transition:transform .22s ease}
.link-more:hover{color:var(--brand)}
.link-more:hover .arrow{transform:translateX(4px)}

/* ===== page head ===== */
.page-head{
  position:relative;padding:150px 0 72px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(10,17,31,.86),rgba(10,17,31,.96)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.page-head::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line-1);
}
.page-head-inner{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;position:relative;z-index:2}
.page-head-main{max-width:760px}
.page-head-sub{margin-top:18px;font-size:17px;color:var(--text-1)}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);white-space:nowrap;padding-bottom:6px}
.crumb a:hover{color:var(--brand)}
.crumb-current{color:var(--text-1)}
.tagline-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);border:1px solid var(--line-1);
  font-size:12px;letter-spacing:.04em;color:var(--text-1);
}
.tag b{color:var(--brand);font-family:var(--font-num);font-weight:600}
.tag.accent{border-color:rgba(255,178,122,.36);color:var(--accent)}

/* ===== flow steps ===== */
.flow-rail{
  display:grid;grid-template-columns:repeat(5,1fr);gap:0;
  border-top:1px solid var(--line-1);padding-top:36px;margin-top:8px;
}
.flow-step{position:relative;padding:0 20px 0 0}
.flow-step::before{
  content:"";position:absolute;top:-37px;left:0;width:10px;height:10px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(88,224,200,.14);
}
.flow-step .num{
  font-family:var(--font-num);font-size:13px;letter-spacing:.08em;color:var(--text-2);display:block;margin-bottom:10px;
}
.flow-step .ico{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line-1);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
  color:var(--brand);background:rgba(255,255,255,.03);
}
.flow-step .ico svg{width:16px;height:16px}
.flow-step h3{font-size:17px;margin-bottom:8px}
.flow-step p{font-size:14px;line-height:1.7;color:var(--text-1);max-width:230px}
.flow-line{
  position:absolute;top:-32px;right:12px;height:1px;width:calc(100% - 34px);
  background:linear-gradient(90deg,rgba(255,255,255,.16),rgba(255,255,255,0));
}
.flow-step:last-child .flow-line{display:none}

/* ===== cards grid ===== */
.grid-asym{
  display:grid;gap:24px;
  grid-template-columns:1.08fr .92fr;
  grid-template-areas:
    "large a"
    "large b"
    "wide  wide";
}
.card{position:relative;border-radius:var(--r-card);overflow:hidden}
.card-large{grid-area:large;background:var(--bg-3);border:1px solid var(--line-1);display:flex;flex-direction:column}
.card-large .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.card-large .thumb img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-card) var(--r-card) 0 0;transition:transform .5s ease}
.card-large:hover .thumb img{transform:scale(1.03)}
.card-large .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,17,31,0) 40%,rgba(10,17,31,.72))}
.corner-badge{
  position:absolute;top:16px;left:16px;z-index:2;height:24px;padding:0 10px;display:inline-flex;align-items:center;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;color:#231206;
  background:linear-gradient(180deg,#FFC79A,#FFA563);
}
.card-body{padding:24px}
.card-body h3{margin-bottom:10px}
.card-body p{font-size:14px;line-height:1.75}
.bullet-list{margin-top:18px;display:grid;gap:10px}
.bullet-list li{display:flex;gap:10px;font-size:14px;color:var(--text-1);line-height:1.7}
.bullet-list li::before{
  content:"";flex:none;width:6px;height:6px;margin-top:9px;border-radius:1px;
  background:var(--brand);opacity:.85;
}
.card-small{
  background:rgba(255,255,255,.05);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line-1);box-shadow:inset 0 0 0 1px rgba(255,255,255,.02);
  padding:24px;display:flex;flex-direction:column;gap:12px;
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.card-small.a{grid-area:a}
.card-small.b{grid-area:b}
.card-small:hover{transform:translateY(-4px);border-color:rgba(88,224,200,.4);box-shadow:var(--shadow-mid)}
.card-wide{
  grid-area:wide;background:var(--bg-2);border:1px solid var(--line-1);
  padding:24px;display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  transition:transform .26s ease,border-color .26s ease;
}
.card-wide:hover{transform:translateY(-3px);border-color:rgba(88,224,200,.32)}
.card-wide .wide-txt{flex:1 1 380px}
.card-wide h3{margin-bottom:8px}
.card-wide p{font-size:14px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.03em;border:1px solid var(--line-1);color:var(--text-1);white-space:nowrap;
}
.badge.ok{color:var(--brand);border-color:rgba(88,224,200,.42);background:rgba(88,224,200,.06)}
.badge.warn{color:var(--warning);border-color:rgba(251,191,36,.36);background:rgba(251,191,36,.06)}
.badge.acc{color:var(--accent);border-color:rgba(255,178,122,.36);background:rgba(255,178,122,.06)}

/* ===== progress panel ===== */
.panel-glass{
  background:rgba(255,255,255,.05);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line-1);border-radius:var(--r-card);
  padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
}
.panel-glass .panel-txt p{margin-top:10px;font-size:14px}
.progress-wrap{display:flex;align-items:center;gap:16px}
.progress{flex:1;height:10px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);overflow:hidden;position:relative}
.progress .fill{
  height:100%;width:0;border-radius:var(--r-pill);
  background:linear-gradient(90deg,#58E0C8,#FFB27A);
  transition:width .6s ease-out;position:relative;
}
.progress .fill::after{
  content:"";position:absolute;right:-1px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:#FFD8B4;box-shadow:0 0 10px rgba(255,178,122,.9);
}
.progress.is-on .fill{width:var(--val,0%)}
.progress-num{font-family:var(--font-num);font-size:22px;font-weight:600;color:var(--text-0);min-width:62px;text-align:right}
.task-list{margin-top:24px;border-top:1px solid var(--line-3)}
.task-row{
  display:flex;align-items:center;gap:16px;padding:16px 12px;
  border-bottom:1px solid var(--line-3);transition:background-color .2s ease;
}
.task-row:hover{background:rgba(255,255,255,.04)}
.task-row .mark{
  flex:none;width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;
}
.task-row .mark.done{background:var(--brand)}
.task-row .mark.done svg{width:10px;height:10px;color:#06121B}
.task-row .mark.todo{border:1px solid var(--line-2)}
.task-row .task-name{font-size:15px;color:var(--text-0);flex:1;min-width:0}
.task-row .task-note{font-size:13px;color:var(--text-2);flex:1 1 220px;display:none}

/* ===== faq ===== */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.faq-item{border-bottom:1px solid var(--line-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;text-align:left;font-size:16px;font-weight:600;color:var(--text-0);
  min-height:44px;
}
.faq-q:hover{color:var(--brand)}
.faq-sign{position:relative;flex:none;width:20px;height:20px}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-1);transition:transform .3s ease,background-color .3s ease;
}
.faq-sign::before{width:14px;height:1px;transform:translate(-50%,-50%)}
.faq-sign::after{width:1px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-item.is-open .faq-sign::before{background:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 32px 22px 0;font-size:14px;line-height:1.8;color:var(--text-1)}
.faq-item.is-open .faq-q{color:var(--brand)}

/* ===== proof strip ===== */
.strip{
  border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);
  padding:28px 0;
}
.strip-inner{display:flex;flex-wrap:wrap;gap:16px 44px;align-items:center;justify-content:space-between}
.strip-item{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.06em;color:var(--text-2);
}
.strip-item b{font-family:var(--font-num);font-size:14px;color:var(--text-1);font-weight:600;letter-spacing:0}

/* ===== cta ===== */
.cta-band{
  position:relative;background:var(--bg-1);padding:96px 0;overflow:hidden;
  border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.5;
  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:64px 64px;
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:640px;margin:0 auto}
.cta-inner p{margin:16px 0 32px;font-size:16px}

/* ===== footer ===== */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line-1);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1.5fr 1.5fr 1.5fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:320px;color:var(--text-1)}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-0);margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:12px}
.footer-col a,.footer-col .contact-line{
  display:inline-block;font-size:14px;color:var(--text-1);transition:color .22s ease,transform .22s ease;
}
.footer-col a:hover{color:var(--brand);transform:translateX(-2px)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-3);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-2);
}
.footer-bottom span{font-family:var(--font-num);letter-spacing:.02em}

/* ===== responsive ===== */
@media (max-width:1280px){
  .container{padding:0 32px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .container{padding:0 24px}
  .flow-rail{grid-template-columns:repeat(3,1fr);row-gap:40px}
  .flow-step:nth-child(3) .flow-line{display:none}
  .grid-asym{grid-template-columns:1fr;grid-template-areas:"large" "a" "b" "wide"}
  .panel-glass{grid-template-columns:1fr;gap:24px;padding:24px}
  .faq-grid{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:32px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:834px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .page-head{padding:130px 0 56px}
  .page-head-inner{flex-direction:column;align-items:flex-start;gap:20px}
  .flow-rail{grid-template-columns:repeat(2,1fr)}
  .flow-step:nth-child(3) .flow-line{display:block}
  .flow-step:nth-child(even) .flow-line{display:none}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .cta-band{padding:56px 0}
  .site-footer{padding:56px 0 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .card-wide{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .brand{font-size:16px}
  .page-head{padding:118px 0 48px}
  .flow-rail{grid-template-columns:1fr;padding-top:0;border-top:none;position:relative}
  .flow-rail::before{content:"";position:absolute;left:4px;top:8px;bottom:8px;width:1px;background:var(--line-1)}
  .flow-step{padding:0 0 32px 28px}
  .flow-step::before{top:6px;left:0;width:9px;height:9px}
  .flow-step .flow-line{display:none}
  .panel-glass{padding:20px}
  .progress-num{font-size:18px;min-width:52px}
  .task-row{flex-wrap:wrap;gap:10px}
  .task-row .task-name{flex:1 1 100%;order:2}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  h1{font-size:clamp(26px,7.4vw,34px)}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-0:#0A111F;
  --bg-1:#0F1A2E;
  --bg-2:#16243D;
  --bg-3:#1B2B47;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.18);
  --line-3:rgba(255,255,255,.06);
  --text-0:#EAF1FB;
  --text-1:#A9B7CC;
  --text-2:#6E7C93;
  --brand:#58E0C8;
  --brand-deep:#1E9E8C;
  --accent:#FFB27A;
  --accent-2:#8B9DFF;
  --success:#4ADE80;
  --warning:#FBBF24;
  --danger:#F87171;
  --disabled:rgba(255,255,255,.28);
  --r-hero:24px;
  --r-card:18px;
  --r-sm:12px;
  --r-btn:999px;
  --shadow-soft:0 4px 16px rgba(0,0,0,.28);
  --shadow-mid:0 10px 30px rgba(0,0,0,.38);
  --shadow-high:0 18px 48px rgba(0,0,0,.5);
  --glow-brand:0 0 0 1px rgba(88,224,200,.35),0 8px 30px rgba(88,224,200,.22);
  --glow-soft:0 0 0 1px rgba(255,255,255,.14),0 6px 24px rgba(0,0,0,.35);
  --font-sans:"HarmonyOS Sans","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text-0);
  background-color:var(--bg-0);
  background-image:
    linear-gradient(to right,rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.022) 1px,transparent 1px),
    radial-gradient(1100px 560px at 6% -12%,rgba(88,224,200,.10),transparent 62%),
    radial-gradient(900px 520px at 104% 4%,rgba(139,157,255,.09),transparent 60%);
  background-size:68px 68px,68px 68px,auto,auto;
  background-repeat:repeat,repeat,no-repeat,no-repeat;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit}
button{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.02em;max-width:20ch}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.28;letter-spacing:-.01em}
h3{font-size:20px;font-weight:700;line-height:1.35}
h4{font-size:17px;font-weight:600;line-height:1.4}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(88,224,200,.28);color:#ffffff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:76px;
  display:flex;
  align-items:center;
  background:rgba(10,17,31,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:height .28s ease,background .28s ease,border-color .28s ease;
}
.site-header.scrolled{height:64px;background:rgba(10,17,31,.72);border-bottom-color:var(--line-1)}
.nav-wrap{display:flex;align-items:center;gap:28px;width:100%}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-right:auto;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text-0);
  text-decoration:none;
  white-space:nowrap;
}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);flex:0 0 6px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:8px 2px;
  font-size:15px;
  color:var(--text-1);
  text-decoration:none;
  transition:color .24s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transition:left .24s ease,right .24s ease;
}
.nav-link:hover{color:var(--text-0)}
.nav-link:hover::after{left:0;right:0}
.nav-link.active{color:var(--text-0)}
.nav-link.active::after{left:0;right:0}
.nav-link.active::before{
  content:"";
  position:absolute;
  left:-9px;
  top:50%;
  width:4px;
  height:4px;
  margin-top:-2px;
  border-radius:50%;
  background:var(--brand);
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:40px;
  padding:10px 22px;
  border-radius:var(--r-btn);
  background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  color:#06121B;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  white-space:nowrap;
  box-shadow:var(--glow-brand);
  transition:filter .2s ease,transform .2s ease,box-shadow .24s ease;
}
.nav-cta:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(88,224,200,.45),0 12px 34px rgba(88,224,200,.3)}
.nav-cta:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(88,224,200,.26),0 4px 14px rgba(88,224,200,.16)}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:6px;
  width:44px;
  height:44px;
  padding:0;
  background:none;
  border:0;
  cursor:pointer;
}
.nav-toggle span{display:block;width:22px;height:2px;margin:0 auto;border-radius:2px;background:var(--text-0);transition:transform .24s ease}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}

.mobile-panel{
  position:fixed;
  inset:0;
  z-index:55;
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:104px 24px 40px;
  background:var(--bg-1);
  overflow-y:auto;
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s;
}
.mobile-panel.open{opacity:1;visibility:visible;transform:none}
.mobile-panel a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:16px 4px;
  font-size:22px;
  font-weight:600;
  color:var(--text-0);
  text-decoration:none;
  border-bottom:1px solid var(--line-3);
  opacity:0;
  transform:translateY(8px);
  transition:opacity .32s ease,transform .32s ease,color .2s ease;
}
.mobile-panel a.is-active{color:var(--brand)}
.mobile-panel.open a{opacity:1;transform:none}
.mobile-panel .mobile-cta{
  justify-content:center;
  margin-top:32px;
  padding:16px 24px;
  border:0;
  border-radius:var(--r-btn);
  background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  color:#06121B;
  font-size:16px;
  font-weight:700;
  min-height:52px;
  box-shadow:var(--glow-brand);
}
body.no-scroll{overflow:hidden}

/* ---------- common blocks ---------- */
.section{padding:48px 0}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.08em;
  color:var(--text-2);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--line-2)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:44px;
  font-size:14px;
  color:var(--text-1);
  text-decoration:none;
  transition:color .2s ease;
  white-space:nowrap;
}
.link-arrow span{transition:transform .24s ease}
.link-arrow:hover{color:var(--brand)}
.link-arrow:hover span{transform:translateX(4px)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:14px 28px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  text-decoration:none;
  white-space:nowrap;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .24s ease,background .24s ease,border-color .24s ease,filter .24s ease;
}
.btn-primary{
  background:linear-gradient(180deg,#58E0C8,#2FBFA6);
  color:#06121B;
  box-shadow:var(--glow-brand);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(88,224,200,.45),0 12px 36px rgba(88,224,200,.32)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(88,224,200,.26),0 4px 14px rgba(88,224,200,.16)}
.btn-ghost{background:transparent;border-color:var(--line-2);color:var(--text-0)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(88,224,200,.4)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ---------- page hero ---------- */
.page-hero{
  padding:72px 0 44px;
  border-bottom:1px solid var(--line-1);
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-2);
}
.breadcrumb a{color:var(--text-2);text-decoration:none;transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.bc-sep{color:var(--line-2)}
.page-hero .eyebrow{margin-top:26px}
.page-lead{
  max-width:640px;
  margin-top:18px;
  font-size:17px;
  color:var(--text-1);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-tags li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:32px;
  padding:6px 14px;
  border:1px solid var(--line-2);
  border-radius:var(--r-btn);
  font-size:13px;
  color:var(--text-1);
}
.t-num{font-family:var(--font-mono);font-size:13px;color:var(--brand)}

/* ---------- feature banner ---------- */
.feature-banner{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
  padding:40px;
  background:var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:var(--r-hero);
  box-shadow:var(--shadow-mid);
  overflow:hidden;
}
.feature-banner::after{
  content:"";
  position:absolute;
  top:-60px;
  right:-40px;
  width:320px;
  height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(88,224,200,.14),transparent 68%);
  pointer-events:none;
}
.feature-copy{position:relative;z-index:1}
.feature-copy p{margin-top:16px;font-size:15px;color:var(--text-1);max-width:520px}
.feature-figure{position:relative;z-index:1}
.feature-figure img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  border-radius:var(--r-card);
  background:var(--bg-3);
}
.check-list{margin-top:22px}
.check-list li{position:relative;padding-left:22px;margin-top:12px;font-size:15px;color:var(--text-1)}
.check-list li::before{content:"";position:absolute;left:0;top:.74em;width:6px;height:6px;border-radius:2px;background:var(--brand)}

/* ---------- list + sticky ---------- */
.layout-main{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.entry-list{border-top:1px solid var(--line-3)}
.entry-row{
  position:relative;
  display:grid;
  grid-template-columns:200px minmax(0,1fr) 24px;
  grid-template-areas:"title desc arrow";
  align-items:center;
  gap:24px;
  padding:22px 12px 22px 20px;
  border-bottom:1px solid var(--line-3);
  text-decoration:none;
  transition:background .24s ease;
}
.entry-row::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:3px;
  height:56%;
  border-radius:2px;
  background:var(--brand);
  opacity:0;
  transform:translateY(-50%) scaleY(.2);
  transition:opacity .24s ease,transform .24s ease;
}
.entry-row:hover{background:rgba(255,255,255,.04)}
.entry-row:hover::before{opacity:1;transform:translateY(-50%) scaleY(1)}
.entry-row h3{grid-area:title;font-size:17px;font-weight:700;color:var(--text-0)}
.entry-row p{
  grid-area:desc;
  font-size:14px;
  line-height:1.7;
  color:var(--text-1);
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.row-arrow{
  grid-area:arrow;
  justify-self:end;
  font-size:18px;
  color:var(--text-2);
  transition:transform .24s ease,color .24s ease;
}
.entry-row:hover .row-arrow{transform:translateX(4px);color:var(--brand)}

.sticky-card{
  position:sticky;
  top:96px;
  padding:26px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-1);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-soft);
}
.sticky-card h3{font-size:18px;margin-bottom:6px}
.mini-list{margin-top:8px}
.mini-list li{
  position:relative;
  padding:12px 0 12px 18px;
  font-size:14px;
  color:var(--text-1);
  border-bottom:1px solid var(--line-3);
}
.mini-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:1.4em;
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--accent-2);
}
.sticky-card .btn{margin-top:20px}

/* ---------- steps ---------- */
.step-track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.step-node{
  position:relative;
  padding:32px 32px 8px 0;
  background-image:linear-gradient(to right,var(--line-2),var(--line-3) 68%,transparent);
  background-size:100% 1px;
  background-repeat:no-repeat;
  background-position:top left;
}
.step-node::before{
  content:"";
  position:absolute;
  top:-5px;
  left:0;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--brand);
}
.step-index{
  display:block;
  margin-bottom:10px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-2);
}
.step-node h3{font-size:17px}
.step-node p{margin-top:10px;font-size:14px;color:var(--text-1);line-height:1.75}

/* ---------- topic cards ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.topic-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:28px;
  background:var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:var(--r-card);
  text-decoration:none;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.topic-card:hover{transform:translateY(-4px);border-color:rgba(88,224,200,.4);box-shadow:var(--shadow-mid)}
.topic-card:active{transform:translateY(-1px)}
.topic-no{font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;color:var(--brand)}
.topic-card h3{font-size:18px}
.topic-card p{font-size:14px;color:var(--text-1)}
.topic-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:auto;
  padding-top:14px;
  font-size:14px;
  color:var(--text-1);
  transition:color .2s ease;
}
.topic-link span{transition:transform .24s ease}
.topic-card:hover .topic-link{color:var(--brand)}
.topic-card:hover .topic-link span{transform:translateX(4px)}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}
.faq-item{border-bottom:1px solid var(--line-3)}
.faq-item:first-child,.faq-item:nth-child(2){border-top:1px solid var(--line-3)}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  min-height:44px;
  padding:20px 0;
  background:none;
  border:0;
  color:var(--text-0);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  text-align:left;
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  background:currentColor;
  transition:transform .3s ease;
}
.faq-icon::before{width:14px;height:1.5px}
.faq-icon::after{width:1.5px;height:14px}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{display:grid;grid-template-rows:0fr;opacity:0;transition:grid-template-rows .3s ease,opacity .3s ease}
.faq-a>div{overflow:hidden}
.faq-item.open .faq-a{grid-template-rows:1fr;opacity:1}
.faq-a p{padding-bottom:20px;font-size:14px;line-height:1.8;color:var(--text-1)}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  padding:96px 0;
  background:var(--bg-1);
  border-top:1px solid var(--line-1);
  border-bottom:1px solid var(--line-1);
  overflow:hidden;
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:18px}
.cta-inner h2{max-width:18ch}
.cta-inner p{font-size:15px;color:var(--text-1);max-width:520px}

/* ---------- footer ---------- */
.site-footer{
  padding:64px 0 32px;
  background:var(--bg-0);
  border-top:1px solid var(--line-1);
}
.footer-grid{display:grid;grid-template-columns:2fr 1.5fr 1.5fr 1.5fr;gap:40px}
.footer-brand .brand{font-size:17px;margin-right:0}
.footer-brand p{max-width:300px;margin-top:14px;font-size:14px;line-height:1.75;color:var(--text-1)}
.footer-col h4{margin-bottom:16px;font-size:14px;letter-spacing:.04em;color:var(--text-0)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{
  display:inline-block;
  font-size:14px;
  color:var(--text-1);
  text-decoration:none;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--brand);transform:translateX(-2px)}
.contact-line{font-family:var(--font-mono);font-size:14px;color:var(--text-1)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:16px;
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid var(--line-3);
  font-size:13px;
  color:var(--text-2);
}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .feature-banner{gap:36px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .feature-banner{grid-template-columns:1fr;gap:28px;padding:32px}
  .layout-main{grid-template-columns:1fr;gap:36px}
  .sticky-card{position:static}
  .step-track{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-node{padding:28px 28px 24px 0}
  .topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  body{background-attachment:scroll}
}
@media (max-width:768px){
  .section{padding:28px 0}
  .page-hero{padding:48px 0 32px}
  h1{max-width:none}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .entry-row{grid-template-columns:minmax(0,1fr) 24px;grid-template-areas:"title arrow" "desc arrow";gap:6px 16px;padding:18px 8px 18px 16px}
  .step-track{display:block}
  .step-node{
    margin-left:5px;
    padding:0 0 28px 24px;
    background-image:none;
    border-left:1px solid var(--line-2);
  }
  .step-node::before{top:9px;left:-5px}
  .topic-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:0}
  .faq-item:nth-child(2){border-top:0}
  .cta-band{padding:56px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .btn{width:100%}
  .btn-row{flex-direction:column;align-items:stretch}
  .hero-tags li{font-size:12px;padding:6px 12px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}