:root{
  --bg:#080B10;
  --bg-2:#0B1017;
  --bg-3:#111823;
  --ink:#EEF2F4;
  --muted:#959DA6;
  --dim:#5B6470;
  --mint:#34D490;
  --blue:#386EE1;
  --blue-bright:#5B8DF0;
  --mint-soft:rgba(52,212,144,.13);
  --blue-soft:rgba(56,110,225,.13);
  --grad:linear-gradient(120deg,#34D490 0%,#386EE1 100%);
  --grad-soft:linear-gradient(120deg,rgba(52,212,144,.16),rgba(56,110,225,.16));
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.13);
  --serif:"Noto Serif SC","Songti SC","STSong",serif;
  --sans:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono","SF Mono",monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;
  opacity:.03;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
::selection{background:var(--mint);color:#04121A}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(1180px,92%);margin:0 auto}

.eyebrow{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--mint);display:flex;align-items:center;gap:10px;
}
.eyebrow::before{
  content:"";width:28px;height:2px;border-radius:2px;
  background:var(--grad);
}
.section-title{
  font-family:var(--serif);font-size:clamp(26px,3.6vw,42px);line-height:1.2;
  letter-spacing:-.02em;font-weight:700;margin:12px 0 12px;
}
.section-title em{
  font-style:normal;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.section-lead{color:var(--muted);font-size:clamp(14px,1.3vw,16px);max-width:660px}
.section-head{margin-bottom:32px}
.section-head.center{text-align:center}
.section-head.center .eyebrow{justify-content:center}
.section-head.center .section-lead{margin-left:auto;margin-right:auto}

/* ============ NAV ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  background:rgba(8,11,16,.76);
  border-bottom:1px solid var(--line);
  transition:background .3s;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{
  font-family:var(--serif);font-size:21px;font-weight:700;letter-spacing:-.03em;
  display:flex;align-items:center;gap:10px;
}
.logo-mark{
  width:26px;height:26px;flex-shrink:0;display:block;
  filter:drop-shadow(0 4px 14px rgba(52,212,144,.28));
}
.logo-text{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.nav-links{display:flex;gap:26px;list-style:none}
.nav-links a{font-size:13px;color:var(--muted);transition:color .2s;position:relative}
.nav-links a:hover{color:var(--ink)}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;border-radius:2px;
  background:var(--grad);transition:width .25s;
}
.nav-links a:hover::after{width:100%}
.nav-cta{
  font-size:13px;font-weight:700;padding:10px 20px;border-radius:8px;
  background:var(--grad);
  color:#FFFFFF;
  text-shadow:0 1px 2px rgba(0,28,50,.32);
  transition:transform .2s,box-shadow .25s;
  box-shadow:0 4px 18px rgba(56,110,225,.22);
}
.nav-cta:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 30px rgba(52,212,144,.32);
}
@media(max-width:900px){.nav-links{display:none}}

/* ============ HERO ============ */
.hero{
  display:flex;align-items:center;min-height:100vh;
  position:relative;overflow:hidden;padding:108px 0 64px;
  background:
    radial-gradient(ellipse 90% 60% at 50% -10%,rgba(56,110,225,.13),transparent 70%),
    var(--bg);
}
.hero-glow{
  position:absolute;width:700px;height:700px;border-radius:50%;
  background:radial-gradient(circle,rgba(52,212,144,.12) 0%,transparent 66%);
  top:-260px;right:-200px;pointer-events:none;
  animation:float1 18s ease-in-out infinite;
}
.hero-glow-2{
  position:absolute;width:580px;height:580px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,110,225,.16) 0%,transparent 70%);
  bottom:-280px;left:-180px;pointer-events:none;
  animation:float2 22s ease-in-out infinite;
}
@keyframes float1{0%,100%{transform:translate(0,0)}50%{transform:translate(-30px,30px)}}
@keyframes float2{0%,100%{transform:translate(0,0)}50%{transform:translate(30px,-24px)}}
@media(prefers-reduced-motion:reduce){.hero-glow,.hero-glow-2{animation:none}}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(120,180,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,180,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 20%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 20%,transparent 75%);
}
.hero-content{position:relative;z-index:2;max-width:1120px}

.hero-layout{
  display:grid;
  grid-template-columns:1.06fr .94fr;
  gap:46px;
  align-items:center;
}
@media(max-width:980px){
  .hero-layout{grid-template-columns:1fr;gap:30px}
}

.hero h1{
  font-family:var(--serif);font-size:clamp(30px,4.4vw,52px);
  line-height:1.1;letter-spacing:-.03em;font-weight:700;margin:14px 0 16px;
}
.hero h1 .brand-line{
  display:block;font-size:.5em;letter-spacing:.01em;color:var(--muted);
  font-family:var(--sans);font-weight:600;margin-bottom:10px;
}
.hero h1 .accent{
  position:relative;display:inline-block;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero h1 .accent::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:9px;
  background:var(--grad-soft);z-index:-1;border-radius:3px;
}
.hero-sub{
  font-size:clamp(14.5px,1.4vw,16.5px);color:var(--muted);max-width:540px;line-height:1.7;
}
.hero-sub strong{color:var(--ink);font-weight:600}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.btn-primary{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 28px;border-radius:9px;font-size:14px;font-weight:800;
  background:var(--grad);
  color:#FFFFFF;
  text-shadow:0 1px 2px rgba(0,28,50,.32);
  position:relative;overflow:hidden;
  transition:transform .2s,box-shadow .28s;
  box-shadow:0 8px 28px rgba(52,212,144,.22),0 2px 10px rgba(56,110,225,.2);
}
.btn-primary::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.3) 50%,transparent 70%);
  transform:translateX(-120%);transition:transform .6s ease;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 16px 44px rgba(52,212,144,.3),0 6px 20px rgba(56,110,225,.28);
}
.btn-primary:hover::after{transform:translateX(120%)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:9px;font-size:14px;font-weight:600;
  border:1px solid var(--line-strong);color:var(--ink);
  transition:border-color .2s,background .2s,color .2s;
}
.btn-ghost:hover{
  border-color:var(--mint);
  background:var(--mint-soft);
  color:var(--mint);
}

/* ---- HERO 配图 ---- */
.hero-visual{
  position:relative;
  border-radius:16px;
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,#0E1620,#0A0F16);
  padding:9px;
  box-shadow:0 28px 80px rgba(0,0,0,.6),0 0 60px rgba(56,110,225,.08);
}
.hero-visual::before{
  content:"";position:absolute;inset:-1px;border-radius:17px;
  padding:1px;
  background:var(--grad);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  mask-composite:exclude;
  opacity:.4;
  pointer-events:none;
}
.hero-visual svg{
  display:block;width:100%;height:auto;border-radius:9px;
}
.hero-visual figcaption{
  display:flex;align-items:center;gap:7px;flex-wrap:wrap;
  font-family:var(--mono);font-size:10px;letter-spacing:.06em;color:var(--dim);
  padding:9px 7px 2px;
}
.hero-visual figcaption::before{
  content:"";width:5px;height:5px;border-radius:50%;
  background:var(--grad);flex-shrink:0;
}
@media(max-width:980px){
  .hero-visual{max-width:640px;margin:0 auto;width:100%}
}

.hero-metrics{
  display:flex;gap:0;flex-wrap:wrap;margin-top:38px;
  border-top:1px solid var(--line);padding-top:22px;
}
.hero-metric{padding-right:38px;margin-right:38px;border-right:1px solid var(--line)}
.hero-metric:last-child{border-right:none;margin-right:0;padding-right:0}
.hero-metric b{
  display:block;font-family:var(--mono);font-size:clamp(20px,2.7vw,28px);
  font-weight:700;letter-spacing:-.02em;line-height:1.1;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero-metric small{font-size:11.5px;color:var(--dim);display:block;margin-top:5px}
@media(max-width:600px){
  .hero-metric{padding-right:20px;margin-right:20px}
  .hero-metric b{font-size:19px}
}

/* ============ SECTION BASE ============ */
section{padding:68px 0;position:relative}
section.alt{
  background:var(--bg-2);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}

/* ============ INTRO ============ */
.intro-split{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:start}
@media(max-width:860px){.intro-split{grid-template-columns:1fr;gap:28px}}
.intro-copy p{color:var(--muted);margin-bottom:13px;font-size:15px}
.intro-copy p strong{color:var(--ink);font-weight:600}
.intro-copy .highlight{
  font-family:var(--serif);font-size:19px;line-height:1.55;color:var(--ink);
  padding-left:18px;border-left:3px solid;margin:20px 0;
  border-image:var(--grad) 1;
}
.intro-cards{display:grid;gap:10px}
.intro-card{
  background:var(--bg-3);border:1px solid var(--line);border-radius:11px;
  padding:16px 18px;display:flex;gap:14px;align-items:flex-start;
  transition:border-color .2s,transform .2s,background .2s;
}
.intro-card:hover{
  border-color:rgba(52,212,144,.35);
  background:linear-gradient(120deg,rgba(52,212,144,.05),rgba(56,110,225,.05));
  transform:translateX(3px);
}
.intro-card .num{
  font-family:var(--mono);font-size:10.5px;color:var(--mint);
  border:1px solid rgba(52,212,144,.3);border-radius:6px;padding:2px 7px;
  flex-shrink:0;margin-top:3px;background:var(--mint-soft);
}
.intro-card b{display:block;font-size:14.5px;margin-bottom:2px}
.intro-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}

/* ============ FEATURES ============ */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:960px){.feature-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.feature-grid{grid-template-columns:1fr}}
.feature{
  background:var(--bg-3);border:1px solid var(--line);border-radius:13px;
  padding:24px 22px;position:relative;overflow:hidden;
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.feature:hover{
  border-color:rgba(52,212,144,.32);transform:translateY(-3px);
  box-shadow:0 14px 40px rgba(0,0,0,.35);
}
.feature::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad);
  opacity:0;transition:opacity .25s;
}
.feature:hover::before{opacity:1}
.feature .icon{
  width:36px;height:36px;border-radius:9px;display:grid;place-items:center;
  margin-bottom:14px;font-size:16px;
}
.icon-mint{background:var(--mint-soft);color:var(--mint)}
.icon-blue{background:var(--blue-soft);color:var(--blue-bright)}
.feature h3{font-size:16px;font-weight:700;margin-bottom:6px;letter-spacing:-.01em}
.feature p{font-size:13px;color:var(--muted);line-height:1.65}
.feature .tag{
  display:inline-block;margin-top:12px;font-family:var(--mono);font-size:9.5px;
  letter-spacing:.08em;color:var(--dim);border:1px solid var(--line);
  padding:2px 8px;border-radius:4px;
}

/* ============ WHY ============ */
.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(max-width:760px){.why-grid{grid-template-columns:1fr}}
.why-card{
  border:1px solid var(--line);border-radius:13px;padding:24px 22px;
  background:linear-gradient(160deg,var(--bg-3),var(--bg-2));
  position:relative;overflow:hidden;
  transition:border-color .25s,transform .25s;
}
.why-card::after{
  content:"";position:absolute;top:-60px;right:-60px;width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,110,225,.14),transparent 70%);
  pointer-events:none;
}
.why-card:hover{border-color:rgba(56,110,225,.32);transform:translateY(-2px)}
.why-card .why-num{
  font-family:var(--mono);font-size:32px;font-weight:700;
  line-height:1;margin-bottom:10px;letter-spacing:-.04em;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  opacity:.75;
}
.why-card h3{font-size:17px;margin-bottom:7px;letter-spacing:-.01em}
.why-card p{font-size:13.5px;color:var(--muted);line-height:1.68}
.why-card .metric{
  display:inline-flex;align-items:baseline;gap:6px;margin-top:12px;
  font-family:var(--mono);
}
.why-card .metric b{
  font-size:20px;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.why-card .metric small{font-size:10.5px;color:var(--dim)}

/* ============ SCENARIOS ============ */
.scene-list{display:grid;gap:0}
.scene{
  display:grid;grid-template-columns:190px 1fr;gap:28px;align-items:start;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.scene:first-child{padding-top:0}
.scene:last-child{border-bottom:none;padding-bottom:0}
@media(max-width:700px){.scene{grid-template-columns:1fr;gap:8px}}
.scene-tag{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--mint);
  text-transform:uppercase;padding-top:4px;
  display:flex;align-items:center;gap:8px;
}
.scene-tag::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--grad);flex-shrink:0;
}
.scene-body h3{font-size:17px;margin-bottom:6px;letter-spacing:-.01em}
.scene-body p{font-size:13.5px;color:var(--muted);line-height:1.68;max-width:720px}

/* ============ HOW ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:4px}
@media(max-width:860px){.steps{grid-template-columns:repeat(2,1fr);gap:26px 0}}
@media(max-width:480px){.steps{grid-template-columns:1fr}}
.step{padding:0 24px;position:relative}
.step:first-child{padding-left:0}
.step:last-child{padding-right:0}
.step::after{
  content:"";position:absolute;top:16px;right:0;width:1px;height:calc(100% - 16px);
  background:var(--line);
}
.step:last-child::after{display:none}
@media(max-width:860px){.step::after{display:none}}
.step-n{
  width:32px;height:32px;border-radius:50%;border:1px solid rgba(52,212,144,.45);
  display:grid;place-items:center;font-family:var(--mono);font-size:12.5px;
  color:var(--mint);margin-bottom:12px;background:var(--mint-soft);
  transition:background .25s,color .25s,border-color .25s;
}
.step:hover .step-n{
  background:var(--grad);color:#FFFFFF;border-color:transparent;
  text-shadow:0 1px 2px rgba(0,28,50,.3);
  box-shadow:0 6px 20px rgba(52,212,144,.25);
}
.step h3{font-size:15px;margin-bottom:5px;letter-spacing:-.01em}
.step p{font-size:12.5px;color:var(--muted);line-height:1.6}
.step .hint{
  font-family:var(--mono);font-size:10px;color:var(--dim);margin-top:8px;
  padding:4px 8px;border-left:2px solid rgba(56,110,225,.6);
}

/* ============ FAQ ============ */
.faq-list{max-width:820px;margin:0 auto}
details{border-bottom:1px solid var(--line);padding:0}
details summary{
  cursor:pointer;list-style:none;padding:16px 0;
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  font-size:15px;font-weight:600;letter-spacing:-.01em;
  transition:color .2s;
}
details summary:hover{color:var(--mint)}
details summary::-webkit-details-marker{display:none}
details summary::after{
  content:"+";font-family:var(--mono);font-size:17px;color:var(--mint);
  flex-shrink:0;transition:transform .25s;
}
details[open] summary::after{transform:rotate(45deg)}
details .faq-body{
  padding:0 0 18px;color:var(--muted);font-size:13.5px;line-height:1.75;max-width:680px;
}
details .faq-body strong{color:var(--ink)}

/* ============ NEWS ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:860px){.news-grid{grid-template-columns:1fr}}
.news-card{
  background:var(--bg-3);border:1px solid var(--line);border-radius:11px;
  padding:20px 20px;transition:border-color .2s,transform .2s;
  position:relative;overflow:hidden;
}
.news-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:var(--grad);opacity:0;transition:opacity .25s;
}
.news-card:hover{border-color:rgba(52,212,144,.3);transform:translateY(-2px)}
.news-card:hover::before{opacity:1}
.news-date{
  font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--blue-bright);
  margin-bottom:9px;
}
.news-card h3{font-size:14.5px;line-height:1.45;margin-bottom:8px;letter-spacing:-.01em}
.news-card p{font-size:12.5px;color:var(--muted);line-height:1.6}
.news-card .news-src{
  display:inline-block;margin-top:11px;font-family:var(--mono);font-size:9.5px;
  color:var(--mint);letter-spacing:.06em;
}

/* ============ CTA ============ */
.cta-band{
  padding:64px 0;text-align:center;position:relative;overflow:hidden;
  border-top:1px solid var(--line);
  background:
    radial-gradient(ellipse 55% 80% at 30% 110%,rgba(52,212,144,.1),transparent 70%),
    radial-gradient(ellipse 55% 80% at 70% 110%,rgba(56,110,225,.14),transparent 70%),
    var(--bg);
}
.cta-band h2{
  font-family:var(--serif);font-size:clamp(28px,4vw,46px);line-height:1.2;
  letter-spacing:-.03em;margin-bottom:12px;
}
.cta-band h2 em{
  font-style:normal;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.cta-band p{color:var(--muted);font-size:15px;max-width:520px;margin:0 auto 24px}

/* ============ FOOTER ============ */
footer{
  border-top:1px solid var(--line);padding:36px 0 26px;
  background:var(--bg-2);
}
.footer-inner{display:flex;justify-content:space-between;align-items:flex-start;gap:28px;flex-wrap:wrap}
.footer-brand b{font-family:var(--serif);font-size:17px}
.footer-brand p{font-size:12px;color:var(--dim);margin-top:6px;max-width:340px;line-height:1.65}
.footer-links{display:flex;gap:42px;flex-wrap:wrap}
.footer-col h4{font-size:10.5px;font-family:var(--mono);letter-spacing:.12em;color:var(--dim);text-transform:uppercase;margin-bottom:11px}
.footer-col a{display:block;font-size:12.5px;color:var(--muted);margin-bottom:7px;transition:color .2s}
.footer-col a:hover{color:var(--mint)}
.footer-bottom{
  margin-top:24px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:10.5px;color:var(--dim);font-family:var(--mono);
}

/* ============ SCROLL REVEAL ============ */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.22,1,.36,1),transform .6s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}