:root{
  --brand:#4D6BFE;
  --brand-hover:#3B57E8;
  --bg:#FFFFFF;
  --bg-soft:#F7F8FC;
  --bg-hero:#F5F7FF;
  --ink:#0B1020;
  --text:#2A3141;
  --text-2:#5B6472;
  --border:#E8EAF0;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --shadow:0 1px 2px rgba(11,16,32,.04),0 8px 24px rgba(11,16,32,.05);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
a{color:inherit;text-decoration:none}
code{font-family:var(--mono);font-size:.9em;background:var(--bg-soft);border:1px solid var(--border);border-radius:6px;padding:1px 5px;color:var(--ink)}
.wrap{width:min(1160px,calc(100% - 48px));margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:0;background:var(--brand);color:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px;top:8px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:inline-flex;align-items:center;gap:9px;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:-.02em}
.brand-mark{width:26px;height:26px;color:var(--brand)}
.brand-static{color:var(--ink)}
.nav{display:flex;gap:22px;margin-left:auto;font-size:14px;color:var(--text-2)}
.nav a:hover{color:var(--brand)}
.header-cta{margin-left:6px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:11px 20px;border-radius:var(--r-md);font-size:14px;font-weight:600;border:1px solid transparent;transition:background .18s,color .18s,border-color .18s,transform .18s;cursor:pointer}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(77,107,254,.25)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{padding:8px 15px;font-size:13px}
.btn-tag{padding:1px 7px;border-radius:99px;background:var(--brand);color:#fff;font-family:var(--mono);font-size:10px;letter-spacing:.04em}
.btn-ghost:hover .btn-tag{background:var(--brand-hover)}

/* hero */
.hero{background:linear-gradient(180deg,var(--bg-hero),#fff 90%);border-bottom:1px solid var(--border);padding:72px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;margin-bottom:14px}
h1{font-size:clamp(34px,4.4vw,52px);font-weight:800}
.hl{position:relative;color:var(--brand)}
.hl::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:8px;background:rgba(77,107,254,.16);border-radius:2px;z-index:-1}
.lead{margin-top:20px;font-size:16px;color:var(--text-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-note{margin-top:20px;font-family:var(--mono);font-size:12px;color:var(--text-2)}
.note-hl{color:var(--brand);font-weight:600}

.terminal{background:var(--ink);border-radius:var(--r-lg);box-shadow:0 24px 48px rgba(11,16,32,.22);overflow:hidden;border:1px solid #1c2540}
.term-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.dot{width:9px;height:9px;border-radius:50%;background:#3a4561}
.term-title{margin-left:8px;font-family:var(--mono);font-size:12px;color:#8593b5}
.term-steps{list-style:none;margin:0;padding:16px 18px 20px;display:flex;flex-direction:column;gap:11px;font-family:var(--mono);font-size:12.5px;color:#c3cbe0}
.term-steps li{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.term-k{color:#7d8fff}
.term-tag{color:#5f6c8c;font-size:11px}
.term-v{color:#dfe5f4}
.term-ok{margin-left:auto;color:#5ee0a8;font-size:11px;border:1px solid rgba(94,224,168,.4);border-radius:99px;padding:1px 8px}
.term-dsh{margin-left:auto;color:#a6b4ff;font-size:11px;border:1px solid rgba(166,180,255,.42);border-radius:99px;padding:1px 8px}

/* proof */
.proof{border-bottom:1px solid var(--border);background:#fff}
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border-left:1px solid var(--border);border-right:1px solid var(--border)}
.proof-item{background:#fff;padding:26px 24px;display:flex;flex-direction:column;gap:4px}
.proof-item strong{font-size:20px;color:var(--ink);font-weight:700;letter-spacing:-.02em}
.proof-item span{font-size:13px;color:var(--text-2)}

/* sections */
.section{padding:80px 0}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.sec-head{max-width:44em;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,2.8vw,34px);font-weight:800}
.sec-desc{margin-top:14px;color:var(--text-2);font-size:15px}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow)}

/* capabilities */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cap{padding:26px 24px;transition:border-color .18s,transform .18s,box-shadow .18s}
.cap:hover{border-color:#c9d2f7;transform:translateY(-2px);box-shadow:0 12px 28px rgba(77,107,254,.10)}
.cap h3{font-size:16px;margin-bottom:10px}
.cap p{font-size:14px;color:var(--text-2)}

/* permissions */
.perm-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:48px;align-items:start}
.perm-grid>*{min-width:0}
.levels{list-style:none;margin:26px 0 0;padding:0;display:flex;flex-direction:column;gap:14px}
.levels li{display:flex;gap:14px;align-items:flex-start}
.lv{flex:none;width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:12px;font-weight:700;color:var(--brand)}
.levels b{font-size:14px;color:var(--ink)}
.levels p{font-size:13px;color:var(--text-2)}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--r-lg);background:#fff;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:520px}
caption{caption-side:top;text-align:left;padding:16px 18px 12px;font-family:var(--mono);font-size:12px;color:var(--text-2);border-bottom:1px solid var(--border)}
th,td{padding:11px 16px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap}
thead th{font-size:12px;color:var(--text-2);font-weight:600;background:var(--bg-soft)}
tbody th{font-weight:600;color:var(--ink)}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
.matrix .ok{color:var(--brand);font-weight:600}
.matrix .ro{color:var(--text-2)}
.matrix .hide{color:#9aa2b1}
.matrix .dis{color:#b0793a}
.perm-foot{margin-top:14px;font-size:13px;color:var(--text-2)}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.step{position:relative;padding:26px 22px;border:1px solid var(--border);border-radius:var(--r-lg);background:#fff;box-shadow:var(--shadow)}
.step::before{content:"";position:absolute;top:34px;right:-18px;width:18px;height:1px;background:var(--border)}
.step:last-child::before{display:none}
.step-num{font-family:var(--mono);font-size:12px;color:var(--brand);letter-spacing:.06em}
.step h3{font-size:15px;margin:8px 0 8px}
.step p{font-size:13px;color:var(--text-2)}

/* architecture */
.arch{display:flex;flex-direction:column;gap:16px}
.arch-row{display:flex;align-items:center;gap:12px;justify-content:center}
.arch-node{padding:12px 22px;border-radius:var(--r-md);background:#fff;border:1px solid var(--border);font-size:14px;font-weight:600;color:var(--ink);box-shadow:var(--shadow)}
.node-gate{border-color:#c9d2f7;background:var(--bg-hero);color:var(--brand-hover)}
.arch-arrow{color:#b3bccd;font-family:var(--mono)}
.arch-tracks{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.track{border:1px solid var(--border);border-radius:var(--r-lg);background:#fff;padding:18px 20px;box-shadow:var(--shadow)}
.track-release{border-left:3px solid var(--brand)}
.track-dev{border-left:3px solid #9db0ff}
.track-head{font-family:var(--mono);font-size:12px;color:var(--text-2);margin-bottom:12px}
.track-body{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-family:var(--mono);font-size:12px;padding:4px 10px;border-radius:99px;background:var(--bg-hero);border:1px solid #dbe2fb;color:var(--brand-hover)}
.chip-quiet{background:var(--bg-soft);border-color:var(--border);color:var(--text-2)}
.track-note{margin-top:10px;font-family:var(--mono);font-size:11.5px;color:var(--text-2)}
.arch-db{border:1px solid var(--border);border-radius:var(--r-lg);background:#fff;padding:18px 20px;box-shadow:var(--shadow)}
.db-head{font-family:var(--mono);font-size:12px;color:var(--text-2)}
.db-schemas{display:flex;gap:10px;margin:12px 0}
.schema{font-family:var(--mono);font-size:12.5px;padding:5px 12px;border-radius:var(--r-sm);background:var(--ink);color:#dfe5f4}
.db-note{font-size:13px;color:var(--text-2)}

/* delivery */
.delivery-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.delivery-card{padding:26px 24px}
.delivery-card h3{font-size:16px;margin-bottom:16px}
.file-list,.check-list{list-style:none;margin:0 0 16px;padding:0;display:flex;flex-direction:column;gap:10px}
.file-list li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;padding-bottom:10px;border-bottom:1px dashed var(--border)}
.file-list li:last-child{border-bottom:0;padding-bottom:0}
.file-list span{color:var(--text-2);font-size:12.5px}
.check-list li{display:flex;align-items:center;gap:10px;font-size:13.5px}
.badge{font-family:var(--mono);font-size:11px;padding:2px 7px;border-radius:6px;background:var(--bg-hero);color:var(--brand-hover);border:1px solid #dbe2fb}
.muted{font-size:13px;color:var(--text-2);margin-top:8px}

/* compare */
.compare{min-width:640px}
.compare .col-us{background:rgba(77,107,254,.06);font-weight:600;color:var(--brand-hover)}
thead .col-us{background:rgba(77,107,254,.12)}

/* usecases */
.use-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.use{padding:28px 24px}
.use h3{font-size:16px;margin-bottom:10px}
.use p{font-size:14px;color:var(--text-2)}

/* faq */
.faq-wrap{max-width:860px}
.faq{display:flex;flex-direction:column;gap:10px}
.faq details{background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:0 20px;transition:border-color .18s}
.faq details[open]{border-color:#c9d2f7}
.faq summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:600;font-size:14.5px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--brand);font-size:18px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 0 18px;font-size:13.5px;color:var(--text-2);max-width:64em}

/* cta */
.cta{background:linear-gradient(135deg,#0B1020,#1a2450 55%,#2a3a86);color:#fff;padding:72px 0}
.cta-inner{text-align:center}
.cta h2{color:#fff;font-size:clamp(24px,3.2vw,38px);font-weight:800;max-width:20em;margin:0 auto}
.cta p{margin:16px auto 0;color:#b9c2e0;max-width:40em;font-size:15px}
.cta .hero-actions{justify-content:center;margin-top:30px}
.cta .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.32)}
.cta .btn-ghost:hover{border-color:#fff;color:#fff}
.cta .btn-primary{box-shadow:0 10px 28px rgba(77,107,254,.5)}

/* footer */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand p{margin-top:14px;font-size:13.5px;color:var(--text-2);max-width:26em}
.footer-col{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:var(--text-2)}
.footer-col h4{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);font-family:var(--mono);margin-bottom:4px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--border);padding:18px 0 22px;font-size:12.5px;color:var(--text-2);font-family:var(--mono)}

/* workbench */
.wb-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.wb-grid>*{min-width:0}
.wb-mock{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden}
.wb-top{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--border);background:var(--bg-soft)}
.wb-brand{font-family:var(--mono);font-size:11px;color:var(--text-2)}
.wb-pill{margin:0 auto;display:inline-flex;background:#fff;border:1px solid var(--border);border-radius:999px;padding:3px;font-size:11px}
.wb-seg{padding:3px 10px;border-radius:999px;color:var(--text-2);white-space:nowrap}
.wb-seg.on{background:var(--brand);color:#fff}
.wb-user{font-family:var(--mono);font-size:11px;color:var(--text-3)}
.wb-body{display:grid;grid-template-columns:132px 1fr;min-height:236px}
.wb-side{background:var(--bg-soft);border-right:1px solid var(--border);padding:12px 10px;display:flex;flex-direction:column;gap:7px}
.wb-side-title{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--text-3);margin-bottom:3px}
.wb-ws{font-family:var(--mono);font-size:10.5px;color:var(--text-2);padding:6px 8px;border-radius:7px;border:1px solid transparent;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.wb-ws.on{background:#fff;border-color:var(--border);color:var(--ink)}
.wb-chat{padding:14px;display:flex;flex-direction:column;gap:9px;min-width:0}
.wb-msg{font-size:11.5px;line-height:1.55;padding:8px 10px;border-radius:9px;max-width:92%}
.wb-msg code{font-size:.88em;padding:0 4px}
.wb-msg.user{align-self:flex-end;background:var(--brand);color:#fff;border-bottom-right-radius:3px}
.wb-msg.user code{background:rgba(255,255,255,.16);border-color:transparent;color:#fff}
.wb-msg.bot{align-self:flex-start;background:var(--bg-soft);color:var(--text);border:1px solid var(--border);border-bottom-left-radius:3px}
.wb-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#2fb37a;margin-right:6px}
.wb-input{margin-top:auto;border:1px solid var(--border);border-radius:9px;padding:8px 10px;font-size:11px;color:var(--text-3);display:flex;justify-content:space-between;align-items:center;gap:10px}
.wb-send{font-family:var(--mono);color:var(--brand)}
.wb-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:18px}
.wb-list li{display:flex;gap:12px}
.wb-list b{flex:none;width:88px;font-size:13.5px;color:var(--ink)}
.wb-list span{font-size:13.5px;color:var(--text-2);min-width:0}

/* responsive */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .proof-grid{grid-template-columns:repeat(2,1fr)}
  .cap-grid,.use-grid{grid-template-columns:repeat(2,1fr)}
  .perm-grid{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::before{display:none}
  .delivery-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .wrap{width:calc(100% - 32px)}
  .nav{display:none}
  .header-inner{justify-content:space-between}
  .header-cta{margin-left:auto}
  .hero{padding:48px 0 44px}  .section{padding:56px 0}
  .proof-grid{grid-template-columns:1fr}
  .proof-item{padding:18px 20px}
  .cap-grid,.use-grid,.steps,.arch-tracks{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta{padding:56px 0}
  .table-wrap{border-radius:var(--r-md)}
}
@media (max-width:420px){
  h1{font-size:clamp(28px,7.7vw,30px)}
}
@media (max-width:960px){
  .wb-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:600px){
  .wb-body{grid-template-columns:1fr}
  .wb-side{flex-direction:row;flex-wrap:wrap;border-right:0;border-bottom:1px solid var(--border)}
  .wb-side-title{width:100%}
  .wb-list b{width:84px}
}