*{margin:0;padding:0;box-sizing:border-box}

:root{
  --bg:#0a1022;
  --bg-2:#0b1226;
  --panel:#0f1830;
  --panel-2:#0c1428;
  --line:#1d2b4a;
  --line-soft:#16223c;
  --ink:#e8eef8;
  --ink-2:#8ea0bf;
  --ink-3:#5c6d90;
  --cyan:#2dd4bf;
  --cyan-2:#1fb9a6;
  --cyan-soft:rgba(45,212,191,.1);
  --amber:#f5b454;
  --green:#34d399;
  --red:#f4586a;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --radius:10px;
  --wrap:1200px;
  --head-h:66px;
}

html{scroll-behavior:smooth}

body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}

body.nav-open{overflow:hidden}

a{color:inherit;text-decoration:none}
ul{list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}

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

.mono{font-family:var(--mono)}

/* ===== status bar ===== */
.statusbar{
  background:var(--panel-2);
  border-bottom:1px solid var(--line-soft);
  font-size:12.5px;
  color:var(--ink-2);
}
.statusbar-inner{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:38px;
  flex-wrap:wrap;
}
.status-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 3px rgba(52,211,153,.15);
  animation:dot-pulse 2.4s infinite;
}
@keyframes dot-pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(52,211,153,.15)}
  50%{box-shadow:0 0 0 6px rgba(52,211,153,.06)}
}
.statusbar .sb-text{font-family:var(--mono);letter-spacing:.02em}
.statusbar .sb-right{margin-left:auto;font-family:var(--mono);color:var(--ink-3)}

/* ===== header ===== */
.site-head{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,16,34,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .25s,border-color .25s;
}
.site-head.scrolled{
  box-shadow:0 12px 30px rgba(0,0,0,.4);
  border-color:var(--line);
}
.head-inner{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:var(--head-h);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:30px;height:30px}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em}
.brand-divider{width:1px;height:18px;background:var(--line)}
.brand-sub{font-family:var(--mono);font-size:12.5px;color:var(--cyan);letter-spacing:.04em}

.nav-menu{display:flex;align-items:center;gap:6px;flex:1}
.nav-menu a{
  padding:8px 13px;
  font-size:14.5px;
  color:var(--ink-2);
  border-radius:8px;
  transition:color .2s,background .2s;
}
.nav-menu a:hover{color:var(--ink);background:rgba(255,255,255,.04)}
.nav-menu a.active{color:var(--cyan);background:var(--cyan-soft)}

.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.ghost-link{font-size:14px;color:var(--ink-2);transition:color .2s}
.ghost-link:hover{color:var(--cyan)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:8px;
  font-size:14.5px;
  font-weight:600;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px)}
.btn-cyan{
  background:var(--cyan);
  color:#06231f;
}
.btn-cyan:hover{background:#3ee0cb;box-shadow:0 8px 24px rgba(45,212,191,.28)}
.btn-outline{
  border:1px solid var(--line);
  color:var(--ink);
  background:transparent;
}
.btn-outline:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-sm{padding:9px 16px;font-size:13.5px}
.btn-block{width:100%}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:8px;
  padding:0 10px;
}
.nav-toggle span{
  display:block;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .25s,opacity .25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-nav{
  display:none;
  flex-direction:column;
  gap:2px;
  padding:10px 24px 24px;
  background:var(--panel-2);
  border-bottom:1px solid var(--line);
}
.mobile-nav.open{display:flex}
.mobile-nav a{
  padding:13px 14px;
  border-radius:8px;
  font-size:15px;
  color:var(--ink-2);
}
.mobile-nav a:hover{background:rgba(255,255,255,.04);color:var(--ink)}
.mobile-nav .btn{margin-top:12px}

/* ===== hero ===== */
.hero{
  position:relative;
  padding:84px 0 72px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 30%,transparent 75%);
  opacity:.5;
  pointer-events:none;
}
.hero-inner{position:relative}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--cyan);
  border:1px solid rgba(45,212,191,.3);
  background:var(--cyan-soft);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:22px;
}
.hero h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero h1 .hl{color:var(--cyan)}
.hero-lead{
  color:var(--ink-2);
  font-size:16px;
  max-width:520px;
  margin-bottom:30px;
}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}

.hero-metrics{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  overflow:hidden;
}
.hero-metrics .hm{
  background:var(--bg-2);
  padding:16px 18px;
}
.hero-metrics .hm b{
  display:block;
  font-family:var(--mono);
  font-size:22px;
  color:var(--ink);
  letter-spacing:-.01em;
}
.hero-metrics .hm span{font-size:12.5px;color:var(--ink-3)}

/* ===== terminal panel ===== */
.terminal{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.term-bar{
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 16px;
  background:var(--panel-2);
  border-bottom:1px solid var(--line);
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--ink-2);
}
.term-bar .tb-title{letter-spacing:.04em}
.term-bar .tb-right{margin-left:auto;color:var(--ink-3)}
.led{width:8px;height:8px;border-radius:50%;background:var(--green)}
.led.amber{background:var(--amber)}
.feed{padding:6px 0}
.feed-row{
  display:grid;
  grid-template-columns:78px 1fr auto;
  gap:12px;
  align-items:center;
  padding:10px 16px;
  border-bottom:1px solid var(--line-soft);
  font-family:var(--mono);
  font-size:13px;
}
.feed-row:last-child{border-bottom:0}
.feed-row .fr-time{color:var(--ink-3)}
.feed-row .fr-text{color:var(--ink-2)}
.feed-row .fr-text b{color:var(--ink);font-weight:600}
.feed-row .fr-val{color:var(--cyan)}
.feed-row .fr-val.down{color:var(--red)}

/* ===== section ===== */
.section{padding:78px 0}
.section.alt{background:var(--bg-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{margin-bottom:40px;max-width:720px}
.sec-tag{
  display:inline-block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--cyan);
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.section-head p{color:var(--ink-2)}

/* ===== kpi strip ===== */
.kpi-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.kpi{
  background:var(--panel);
  padding:26px 22px;
}
.kpi b{
  display:block;
  font-family:var(--mono);
  font-size:30px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:-.02em;
  margin-bottom:6px;
}
.kpi b .unit{font-size:16px;color:var(--cyan);margin-left:2px}
.kpi span{font-size:13px;color:var(--ink-3)}

/* ===== cards ===== */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.card-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.term-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.term-card:hover{
  transform:translateY(-4px);
  border-color:rgba(45,212,191,.45);
  box-shadow:0 18px 40px rgba(0,0,0,.35);
}
.term-card .tc-icon{
  width:42px;height:42px;
  border-radius:9px;
  background:var(--cyan-soft);
  border:1px solid rgba(45,212,191,.25);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.term-card .tc-icon svg{width:22px;height:22px}
.term-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.term-card p{font-size:14px;color:var(--ink-2)}

/* ===== data table ===== */
.table-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.table-scroll{overflow-x:auto}
.data-table{
  width:100%;
  border-collapse:collapse;
  min-width:640px;
}
.data-table th{
  text-align:left;
  font-family:var(--mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.06em;
  color:var(--ink-3);
  padding:14px 20px;
  background:var(--panel-2);
  border-bottom:1px solid var(--line);
}
.data-table td{
  padding:15px 20px;
  border-bottom:1px solid var(--line-soft);
  font-size:14px;
}
.data-table tr:last-child td{border-bottom:0}
.data-table tbody tr{transition:background .2s}
.data-table tbody tr:hover{background:rgba(45,212,191,.04)}
.data-table .num{font-family:var(--mono);font-size:14px}
.data-table .up{color:var(--green)}
.data-table .down{color:var(--red)}
.data-table .pair{display:flex;align-items:center;gap:10px;font-weight:600}
.pair-dot{width:26px;height:26px;border-radius:50%;background:var(--cyan-soft);border:1px solid rgba(45,212,191,.3);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:11px;color:var(--cyan)}
.tag-chip{
  display:inline-block;
  font-family:var(--mono);
  font-size:11.5px;
  padding:3px 9px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--ink-2);
}
.tag-chip.cy{border-color:rgba(45,212,191,.35);color:var(--cyan);background:var(--cyan-soft)}
.tag-chip.am{border-color:rgba(245,180,84,.35);color:var(--amber);background:rgba(245,180,84,.08)}

/* ===== tabs ===== */
.tab-bar{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  margin-bottom:28px;
}
.tab-btn{
  padding:10px 18px;
  border-radius:8px;
  border:1px solid var(--line);
  color:var(--ink-2);
  font-size:14px;
  font-family:var(--mono);
  transition:color .2s,border-color .2s,background .2s;
}
.tab-btn:hover{color:var(--ink);border-color:var(--ink-3)}
.tab-btn.active{
  color:var(--cyan);
  border-color:rgba(45,212,191,.5);
  background:var(--cyan-soft);
}
.tab-panel{display:none}
.tab-panel.active{display:block;animation:panel-in .3s ease}
@keyframes panel-in{
  from{opacity:0;transform:translateY(6px)}
  to{opacity:1;transform:none}
}

/* ===== glossary ===== */
.glossary{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.term-row{
  display:grid;
  grid-template-columns:180px 1fr;
  gap:20px;
  padding:18px 24px;
  border-bottom:1px solid var(--line-soft);
}
.term-row:last-child{border-bottom:0}
.term-row dt{
  font-family:var(--mono);
  font-size:14px;
  color:var(--cyan);
}
.term-row dd{font-size:14px;color:var(--ink-2)}

/* ===== steps ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}
.step{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px 24px;
}
.step::before{
  counter-increment:step;
  content:"0" counter(step);
  font-family:var(--mono);
  font-size:13px;
  color:var(--cyan);
  display:inline-block;
  border:1px solid rgba(45,212,191,.35);
  border-radius:6px;
  padding:2px 9px;
  margin-bottom:16px;
}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;color:var(--ink-2)}

/* ===== risk scale ===== */
.scale{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  margin-bottom:36px;
}
.scale-cell{
  background:var(--panel);
  padding:20px 16px;
  text-align:center;
}
.scale-cell b{
  display:block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  margin-bottom:8px;
}
.scale-cell span{font-size:12.5px;color:var(--ink-3)}
.scale-cell.lv1{border-top:3px solid var(--green)}
.scale-cell.lv2{border-top:3px solid #86c96b}
.scale-cell.lv3{border-top:3px solid var(--amber)}
.scale-cell.lv4{border-top:3px solid #f08a4b}
.scale-cell.lv5{border-top:3px solid var(--red)}

/* ===== checklist ===== */
.checklist{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:10px 24px;
}
.check-item{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:16px 0;
  border-bottom:1px solid var(--line-soft);
}
.check-item:last-child{border-bottom:0}
.check-item .ck{
  flex-shrink:0;
  width:20px;height:20px;
  margin-top:3px;
  border-radius:6px;
  border:1px solid rgba(45,212,191,.4);
  background:var(--cyan-soft);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
  color:var(--cyan);
}
.check-item p{font-size:14px;color:var(--ink-2)}
.check-item p b{color:var(--ink)}

/* ===== note / disclaimer ===== */
.note-panel{
  background:linear-gradient(180deg,rgba(245,180,84,.07),rgba(245,180,84,.02));
  border:1px solid rgba(245,180,84,.28);
  border-radius:var(--radius);
  padding:26px 28px;
}
.note-panel h3{
  font-family:var(--mono);
  font-size:13px;
  color:var(--amber);
  letter-spacing:.06em;
  margin-bottom:12px;
}
.note-panel p{font-size:14px;color:var(--ink-2);margin-bottom:8px}
.note-panel p:last-child{margin-bottom:0}

/* ===== page head ===== */
.page-head{
  padding:56px 0 44px;
  border-bottom:1px solid var(--line-soft);
  background:var(--bg-2);
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--ink-3);
  margin-bottom:18px;
}
.crumb a{color:var(--ink-2);transition:color .2s}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{color:var(--ink-3)}
.page-head h1{
  font-size:clamp(26px,3vw,36px);
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.page-head .sub{color:var(--ink-2);max-width:640px}

/* ===== split layout ===== */
.split{
  display:grid;
  grid-template-columns:1.35fr .95fr;
  gap:28px;
  align-items:start;
}

/* ===== meta list ===== */
.meta-list{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:8px 24px;
}
.meta-list .ml-row{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:15px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:14px;
}
.meta-list .ml-row:last-child{border-bottom:0}
.meta-list .ml-row .k{color:var(--ink-3)}
.meta-list .ml-row .v{font-family:var(--mono);color:var(--ink)}

/* ===== cta ===== */
.cta-panel{
  position:relative;
  overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:16px;
  padding:56px 48px;
  display:flex;
  align-items:center;
  gap:40px;
  justify-content:space-between;
}
.cta-panel::before{
  content:"";
  position:absolute;
  right:-140px;top:-140px;
  width:380px;height:380px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(45,212,191,.16),transparent 65%);
  pointer-events:none;
}
.cta-panel h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.01em;margin-bottom:10px}
.cta-panel p{color:var(--ink-2);max-width:520px}
.cta-panel .cta-actions{flex-shrink:0;display:flex;gap:12px}

/* ===== footer ===== */
.site-footer{
  background:var(--panel-2);
  border-top:1px solid var(--line);
  padding:60px 0 30px;
  margin-top:0;
}
.footer-cols{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line-soft);
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:13.5px;color:var(--ink-3);max-width:300px}
.footer-col h3{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--ink-2);
  margin-bottom:16px;
}
.footer-col a{
  display:block;
  font-size:13.5px;
  color:var(--ink-3);
  padding:5px 0;
  transition:color .2s;
}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:var(--ink-3);
}
.footer-bottom .mono{font-family:var(--mono);font-size:12.5px}

/* ===== motion ===== */
body.js .fade-up{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .6s ease,transform .6s ease;
}
body.js .fade-up.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  body.js .fade-up{opacity:1;transform:none;transition:none}
}

/* ===== responsive ===== */
@media (max-width:1080px){
  .hero-grid{gap:40px}
  .card-grid.cols-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:992px){
  .nav-menu,.nav-actions{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-lead{max-width:none}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .kpi-strip{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:44px 32px}
}
@media (max-width:768px){
  .section{padding:58px 0}
  .hero-metrics{grid-template-columns:1fr 1fr}
  .scale{grid-template-columns:repeat(2,1fr)}
  .term-row{grid-template-columns:1fr;gap:6px}
  .statusbar .sb-right{display:none}
}
@media (max-width:560px){
  .wrap{padding:0 18px}
  .card-grid,.card-grid.cols-4{grid-template-columns:1fr}
  .kpi-strip{grid-template-columns:1fr}
  .hero-metrics{grid-template-columns:1fr}
  .feed-row{grid-template-columns:64px 1fr;gap:8px}
  .feed-row .fr-val{grid-column:2;justify-self:start}
  .btn{padding:12px 18px}
  .hero-ctas .btn{flex:1}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .scale{grid-template-columns:1fr}
  .cta-panel{padding:36px 24px}
  .data-table th,.data-table td{padding:13px 16px}
}