:root{
  color-scheme:light;
  --bg:#fbf6ee; --surface:#fffdf9; --surface-2:#f6efe4; --surface-3:#f1e8de;
  --ink:#3b2f27; --muted:#6f6157; --dim:#85766a; --line:#eadfce;
  --primary:#2f4f8f; --primary-fill:#2f4f8f; --primary-deep:#24406f; --on-primary:#ffffff;
  --brand:#8f776b; --brand-dark:#5b463e; --amber:#d0832f;
  --ok:#2f7a4c; --wait:#a5651c; --dev:#5b463e;
  --radius:14px; --wrap:1160px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;}
a{color:var(--primary)}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:20px}
.zh{display:none}
html[data-lang="zh"] .en{display:none}
html[data-lang="zh"] .zh{display:revert}

/* nav */
header.top{position:sticky;top:0;z-index:20;background:rgba(251,246,238,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:20px;min-height:64px;flex-wrap:wrap;padding-block:8px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;letter-spacing:.2px}
.brand svg{width:28px;height:28px;flex:none}
.brand small{display:block;font-weight:500;color:var(--dim);font-size:11px;letter-spacing:.6px;text-transform:uppercase;line-height:1}
.links{display:flex;gap:22px;flex-wrap:wrap;align-items:center}
.menu{display:flex;align-items:center;gap:20px;flex:1}
.links a{color:var(--muted);text-decoration:none;font-size:14.5px;font-weight:500}
.links a:hover{color:var(--ink)}
.navr{display:flex;gap:10px;align-items:center;margin-left:auto}
.lang{border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:8px;padding:6px 10px;font-size:13px;cursor:pointer}
.btn{display:inline-block;text-decoration:none;font-weight:700;border-radius:10px;padding:12px 22px;font-size:15px;border:1px solid transparent;text-align:center}
.btn.sm{padding:8px 14px;font-size:14px}
.btn.primary{background:var(--primary-fill);color:#fff}
.btn.primary:hover{background:var(--primary-deep)}
.btn.ghost{border-color:var(--line);color:var(--ink);background:var(--surface)}
.btn.ghost:hover{border-color:var(--dim)}

/* hero */
.hero{position:relative;padding-block:84px 64px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-30% -10% auto auto;width:640px;height:640px;max-width:120vw;background:radial-gradient(closest-side,rgba(208,131,47,.10),transparent);pointer-events:none}
.pill{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:5px 12px;margin-bottom:22px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--ok);flex:none}
.hero h1{position:relative;font-size:clamp(36px,6.4vw,64px);line-height:1.08;margin:0 0 22px;letter-spacing:-1px;font-weight:800;text-wrap:balance}
.hero h1 .l2{color:var(--primary)}
.hero p.lead{position:relative;font-size:clamp(17px,2.1vw,20px);color:var(--muted);max-width:700px;margin:0 0 32px}
.cta{position:relative;display:flex;gap:12px;flex-wrap:wrap}
.facts{position:relative;display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:28px;font-size:14px;color:var(--dim)}

section{padding-block:72px;border-top:1px solid var(--line)}
.kicker{display:inline-flex;align-items:center;gap:8px;font:700 12.5px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;letter-spacing:1.2px;text-transform:uppercase;color:var(--brand-dark);margin:0 0 14px}
.kicker::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--amber)}
section h2{font-size:clamp(26px,3.6vw,36px);line-height:1.15;margin:0 0 12px;letter-spacing:-.5px;font-weight:800;padding-left:14px;border-left:4px solid var(--primary)}
section .sub{color:var(--muted);margin:0 0 36px;max-width:720px;font-size:17px}

/* status cards */
.status{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.scard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:10px;min-width:0}
.scard .row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.scard h3{margin:0;font-size:19px}
.badge{display:inline-flex;align-items:center;gap:6px;font:700 12px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;letter-spacing:.5px;text-transform:uppercase;border-radius:999px;padding:6px 10px;background:var(--surface-3)}
.badge::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.badge.live{color:var(--ok);background:#e5f1e8} .badge.wait{color:var(--wait);background:#f7ead8} .badge.book{color:var(--primary);background:#e9eef8} .badge.dev{color:var(--dev);background:var(--surface-3)}
.scard p{margin:0;color:var(--muted)}
.scard ul{margin:2px 0 0;padding-left:18px;color:var(--ink);font-size:15px}
.scard li{margin:3px 0}
.scard .more{margin-top:auto;padding-top:6px;font-weight:600;text-decoration:none}

/* docs / mcp */
.mcp{display:grid;gap:28px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));align-items:start}
.feat{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.feat li{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.feat b{display:block;margin-bottom:2px}
.feat span{color:var(--muted);font-size:15px}
.clients{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 0}
.clients span{font:600 13px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;background:var(--surface);color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:7px 10px}
.term{background:#2b221d;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-width:0}
.term .bar{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid #43362e;font:500 12.5px/1 var(--mono);color:var(--dim)}
.term .bar i{width:10px;height:10px;border-radius:50%;background:#5b4a40;display:inline-block}
.term pre{margin:0;padding:18px;overflow-x:auto;font:13.5px/1.6 var(--mono);color:#f3ebe1}
.term .c{color:#a99886}.term .k{color:#a9c2f0}.term .s{color:#e8b77a}.term .p{color:#9fd3a8}
.cap{font-size:13px;color:var(--dim);margin-top:10px}

/* use cases */
.note{display:inline-block;font:600 13px/1.4 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:#5a4600;background:#fff3c4;border:1px solid #f0dd95;border-radius:8px;padding:6px 10px;margin-bottom:22px}
.cases{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.case{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;min-width:0}
.case .who{font:700 12px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;letter-spacing:.8px;text-transform:uppercase;color:var(--dim);margin-bottom:10px}
.case h3{margin:0 0 10px;font-size:18px}
.case ol{margin:0;padding-left:20px;color:var(--muted);font-size:15px}
.case li{margin:4px 0}

/* pricing */
.plans{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));align-items:stretch}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;gap:10px;min-width:0}
.plan.featured{border:2px solid var(--primary);box-shadow:0 8px 24px rgba(47,79,143,.10)}
.plan h3{margin:0;font-size:19px}
.price{font-size:42px;font-weight:800;letter-spacing:-1.5px;line-height:1}
.price small{font-size:15px;font-weight:500;color:var(--muted);letter-spacing:0}
.alt{font-size:14px;color:var(--muted);margin-top:-2px}
.plan ul{margin:6px 0 10px;padding-left:18px}
.plan li{margin:4px 0}
.plan .btn{margin-top:auto}
.billing{margin-top:18px;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;color:var(--muted);font-size:15px;background:var(--surface)}
.billing b{color:var(--ink)}

/* trust */
.trust{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));list-style:none;margin:0;padding:0}
.trust li{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.trust b{display:block;margin-bottom:6px}
.trust span{color:var(--muted);font-size:15px}

/* company */
.company{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));align-items:start}
.company p{margin:0 0 14px;color:var(--muted)}
.kv{display:grid;gap:10px;margin:0}
.kv div{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 16px}
.kv dt{font-size:13px;color:var(--dim)}
.kv dd{margin:4px 0 0;font-weight:600;word-break:break-word}

/* policies */
.policies{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.policy{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.policy h3{margin:0 0 10px;font-size:18px}
.policy ul{margin:0;padding-left:18px;color:var(--muted);font-size:15px}
.policy li{margin:5px 0}
.policy p{margin:12px 0 0;color:var(--dim);font-size:14px}

/* big cta */
.bigcta{padding-block:80px;text-align:center;border-top:1px solid var(--line);background:var(--surface-2)}
.bigcta h2{font-size:clamp(34px,6vw,56px);line-height:1.05;letter-spacing:-1px;margin:0 0 16px;font-weight:800;border:0;padding:0}
.bigcta p{color:var(--muted);margin:0 auto 28px;max-width:560px;font-size:17px}
.bigcta .cta{justify-content:center}

/* footer */
footer{border-top:1px solid var(--line);padding-block:48px 36px;color:var(--muted);font-size:14.5px;background:var(--surface)}
.fgrid{display:grid;gap:28px;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr))}
.fgrid h4{margin:0 0 12px;font:700 12px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;letter-spacing:1px;text-transform:uppercase;color:var(--dim)}
.fgrid ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.fgrid a{color:var(--muted);text-decoration:none}
.fgrid a:hover{color:var(--ink)}
.fco p{margin:4px 0}
.fco b{color:var(--ink)}
.copy{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--dim);display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between}

@media (max-width:860px){
  .fgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fco{grid-column:1/-1}
}
@media (max-width:640px){
  .hero{padding-block:52px 44px}
  section{padding-block:52px}
  .bigcta{padding-block:60px}
}

/* ---- multi-page additions ---- */
.links a.active{color:var(--ink);font-weight:700;box-shadow:inset 0 -2px 0 var(--primary)}
.menu-btn{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);background:var(--surface);border-radius:10px;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu-btn span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.pagehead{padding-block:64px 36px;background:linear-gradient(180deg,var(--surface-2),var(--bg))}
.pagehead h1{font-size:clamp(32px,5vw,52px);line-height:1.1;margin:0 0 14px;letter-spacing:-1px;font-weight:800}
.pagehead .sub{color:var(--muted);font-size:18px;max-width:720px;margin:0}
section.first{border-top:0;padding-top:36px}

.split{display:grid;gap:32px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));align-items:start}
.split .sub{margin-bottom:20px}
ul.checks{list-style:none;margin:0 0 14px;padding:0;display:grid;gap:10px}
ul.checks li{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 14px 12px 40px;position:relative}
ul.checks li::before{content:"";position:absolute;left:15px;top:19px;width:10px;height:10px;border-radius:3px;background:var(--amber)}
.more{font-weight:600;text-decoration:none}

.tiles{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.tile{position:relative;display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 44px 22px 22px;text-decoration:none;color:var(--ink)}
.tile:hover{border-color:var(--brand)}
.tile b{display:block;font-size:18px;margin-bottom:6px}
.tile span{color:var(--muted);font-size:15px}
.tile i{position:absolute;right:20px;top:22px;font-style:normal;color:var(--primary);font-weight:700}

.uses{margin:14px 0 0;font-size:13.5px;color:var(--dim)}

.faq{display:grid;gap:10px;max-width:820px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 18px}
.faq summary{cursor:pointer;font-weight:700}
.faq p{margin:10px 0 2px;color:var(--muted)}

.docs{display:grid;gap:36px;grid-template-columns:minmax(0,220px) minmax(0,1fr);align-items:start}
.toc{position:sticky;top:84px;display:grid;gap:8px;font-size:15px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.toc b{font-size:13px;color:var(--dim);text-transform:uppercase;letter-spacing:.6px}
.toc a{color:var(--muted);text-decoration:none}
.toc a:hover{color:var(--ink)}
.doc{min-width:0}
.doc h2{font-size:24px;margin:34px 0 10px;scroll-margin-top:84px}
.doc h2:first-child{margin-top:0}
.doc p,.doc li{color:var(--muted)}
.doc code{font:13.5px var(--mono);background:var(--surface-3);border-radius:5px;padding:1px 5px;color:var(--brand-dark)}
.doc .term{margin-top:14px}
pre.code{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 14px;overflow-x:auto;font:14px/1.5 var(--mono);color:var(--ink);margin:12px 0}
.api{display:grid;gap:8px}
.api div{display:flex;gap:14px;align-items:baseline;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 14px}
.api span{color:var(--muted)}

.links-row{margin-top:20px;color:var(--dim)}
.contact-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-bottom:24px}
.ccard{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-decoration:none;color:var(--ink)}
.ccard:hover{border-color:var(--primary)}
.ccard b{display:block;margin-bottom:4px}
.ccard span{color:var(--muted);font-size:15px}
.kv.two{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

.prose{max-width:780px}
.prose h2{font-size:22px;margin:30px 0 10px}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--muted)}
.prose li{margin:6px 0}
.fname{font-weight:700;color:var(--ink);margin-top:14px !important}

@media (max-width:860px){
  .menu-btn{display:flex}
  .menu{display:none;flex-basis:100%;flex-direction:column;align-items:stretch;gap:14px;padding:6px 0 14px}
  .menu.open{display:flex}
  .links{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .links a{display:block;text-align:left;padding:12px 4px;border-bottom:1px solid var(--line);font-size:16px}
  .links a.active{box-shadow:inset 3px 0 0 var(--primary);padding-left:12px}
  .navr{margin-left:0;justify-content:space-between}
  .docs{grid-template-columns:minmax(0,1fr)}
  .toc{position:static}
}

/* ---- round 3 additions ---- */
.numbers{padding-block:40px;background:var(--surface)}
.numhead{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px 18px;margin-bottom:18px}
.numhead h2{margin:0;font-size:clamp(20px,2.6vw,26px)}
.asof{font-size:13px;color:var(--dim)}
.nums{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.nums div{border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;background:var(--bg)}
.nums b{display:block;font-size:clamp(28px,4vw,38px);line-height:1.1;letter-spacing:-1px;color:var(--primary)}
.nums span{color:var(--muted);font-size:15px}

figure.shot{margin:4px 0 0}
figure.shot img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(59,47,39,.08)}
figure.shot figcaption{font-size:13px;color:var(--dim);margin-top:8px}

.facts-table h3{margin:0 0 10px;font-size:18px}
.facts-table table,table.ret{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.facts-table th,.facts-table td,table.ret th,table.ret td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.facts-table tr:last-child th,.facts-table tr:last-child td,table.ret tbody tr:last-child th,table.ret tbody tr:last-child td{border-bottom:0}
.facts-table th,table.ret tbody th{color:var(--dim);font-weight:600;width:42%}
table.ret thead th{background:var(--surface-3);color:var(--brand-dark);font-size:14px}
.tablewrap{overflow-x:auto;margin:12px 0}

.changelog{list-style:none;margin:0;padding:0 0 0 18px;border-left:2px solid var(--line);display:grid;gap:18px;max-width:780px}
.changelog li{position:relative;display:grid;gap:2px}
.changelog li::before{content:"";position:absolute;left:-25px;top:6px;width:12px;height:12px;border-radius:3px;background:var(--amber)}
.changelog time{font:600 13.5px var(--mono);color:var(--dim)}
.changelog span{font-size:17px}

.notice{background:#fff3c4;border:1px solid #f0dd95;color:#5a4600 !important;border-radius:10px;padding:10px 14px}
.promise{font-weight:600;color:var(--ink);margin:0 0 18px}
.seealso{margin-top:28px;padding-top:16px;border-top:1px solid var(--line)}

/* legal documents (draft copy, layout only) */
.legal{max-width:860px;padding-block:44px 64px}
.legal .document-top{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.legal .eyebrow{font:700 12.5px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;letter-spacing:1.2px;text-transform:uppercase;color:#7a5a00;background:#fff3c4;border:1px solid #f0dd95;border-radius:6px;padding:6px 9px}
.legal h1{font-size:clamp(32px,5vw,46px);line-height:1.1;margin:10px 0 8px;letter-spacing:-.8px}
.legal .effective-date{color:var(--dim);margin:0 0 16px}
.legal .effective-date-value:empty::after{content:"—"}
.legal .draft-note{display:block;background:#fff3c4;border:2px solid #e8c95a;color:#4a3a00;border-radius:12px;padding:14px 18px;font-weight:600;margin:0 0 22px}
.legal details.contents{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 18px;margin-bottom:28px}
.legal details.contents summary{cursor:pointer;font-weight:700}
.legal .toc ul{margin:10px 0 2px;padding-left:18px}
.legal .toc li{margin:4px 0}
.legal .toc a{color:var(--muted);text-decoration:none}
.legal .toc a:hover{color:var(--ink)}
.legal article h2{font-size:22px;margin:32px 0 10px;padding-left:12px;border-left:4px solid var(--primary);scroll-margin-top:84px}
.legal article p,.legal article li{color:var(--ink);line-height:1.7}
.legal article li{margin:6px 0}
.legal .plain-language{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:6px 20px 10px;margin-bottom:8px}
.legal .plain-language h2{border:0;padding:0;margin-top:14px}
.legal table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}
.legal th,.legal td{border:1px solid var(--line);padding:8px 12px;text-align:left;vertical-align:top}
.legal .rollout{background:var(--surface);border-left:4px solid var(--amber);border-radius:8px;padding:10px 14px;font-weight:600}
.legal .lang-note{color:var(--dim);font-size:14px;margin:0 0 18px}
.nums div.flip{display:flex;flex-direction:column-reverse;justify-content:flex-end}

.builton{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.builton .bl{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-right:4px}
.builton .chip{display:inline-flex;flex-direction:column;border:1px solid var(--line);border-radius:10px;padding:8px 12px;background:var(--surface);font-weight:600;font-size:14px;color:var(--ink);line-height:1.3}
.builton .chip small{font-weight:400;font-size:12px;color:var(--muted)}