:root{
  --bg:#fbfbfd; --panel:#ffffff; --ink:#16162a; --muted:#6b7280; --line:#ebebf2;
  --brand:#5b54e6; --brand-d:#463fd0; --brand-2:#8b5cf6; --ok:#10b981; --warn:#f59e0b; --bad:#ef4444;
  --ink-deep:#13132a;
  --radius:16px; --shadow:0 1px 2px rgba(20,20,50,.04),0 12px 32px -12px rgba(40,30,90,.12);
  --shadow-hover:0 2px 4px rgba(20,20,50,.05),0 20px 44px -16px rgba(70,50,160,.22);
  --maxw:1100px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* nav */
nav.top{position:sticky;top:0;z-index:20;background:rgba(251,251,253,.72);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line)}
nav.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;font-size:21px;letter-spacing:.3px;color:var(--ink);display:inline-flex;align-items:center}
.brand .dot{color:var(--brand);font-size:26px;line-height:0;margin-left:1px}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-link{padding:7px 12px;border-radius:8px;font-size:14px;font-weight:500;color:var(--muted);transition:.15s}
.nav-link:hover{color:var(--ink);background:rgba(91,84,230,.07)}
.nav-sep{width:1px;height:20px;background:var(--line);margin:0 8px}

/* buttons */
.btn{display:inline-block;border:1px solid transparent;border-radius:10px;padding:9px 17px;
  font-size:14px;font-weight:600;cursor:pointer;transition:.18s;
  background:linear-gradient(180deg,#665fe9,#5b54e6);color:#fff;
  box-shadow:0 1px 2px rgba(70,50,160,.2),0 6px 16px -6px rgba(70,50,160,.45)}
.btn:hover{background:linear-gradient(180deg,#5b54e6,#463fd0);text-decoration:none;
  transform:translateY(-1px);box-shadow:0 2px 4px rgba(70,50,160,.24),0 10px 22px -6px rgba(70,50,160,.55)}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:0 1px 2px rgba(20,20,50,.04)}
.btn.ghost:hover{background:#fff;border-color:#d7d7e6;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn.sm{padding:7px 14px;font-size:13.5px}
.btn.lg{padding:13px 26px;font-size:15.5px;border-radius:12px}
.btn.danger{background:#fff;color:var(--bad);border-color:#f3d2d2;box-shadow:none}
.btn.danger:hover{background:#fdf0f0}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* hero */
.hero{padding:88px 0 72px;text-align:center;position:relative;overflow:hidden;
  background:
    radial-gradient(900px 320px at 50% -8%,rgba(139,92,246,.16) 0,transparent 65%),
    radial-gradient(700px 280px at 50% 0%,rgba(91,84,230,.14) 0,transparent 60%)}
.pill{display:inline-block;padding:6px 15px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--brand-d);background:rgba(91,84,230,.08);border:1px solid rgba(91,84,230,.18);margin-bottom:22px}
.hero h1{font-size:52px;line-height:1.12;margin:0 0 18px;letter-spacing:-1.5px;font-weight:800}
.hero h1 .hl{background:linear-gradient(100deg,#5b54e6,#8b5cf6 60%,#a855f7);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{font-size:19px;color:var(--muted);max-width:600px;margin:0 auto 32px;line-height:1.55}
.hero p.sub b{color:var(--ink);font-weight:700}
.hero .cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* hero stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:880px;margin:56px auto 0}
.stat{background:rgba(255,255,255,.7);border:1px solid var(--line);border-radius:14px;padding:20px 16px;
  backdrop-filter:blur(6px);box-shadow:0 1px 2px rgba(20,20,50,.03)}
.stat .sv{font-size:30px;font-weight:800;letter-spacing:-1px;
  background:linear-gradient(120deg,#5b54e6,#8b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .sv .su{font-size:14px;font-weight:700;-webkit-text-fill-color:var(--muted);color:var(--muted);margin-left:2px}
.stat .sk{font-size:12.5px;color:var(--muted);margin-top:6px;line-height:1.4}
@media(max-width:820px){.stats{grid-template-columns:repeat(2,1fr)}}

/* sections */
section{padding:64px 0}
section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
section h2{font-size:32px;text-align:center;margin:0 0 10px;letter-spacing:-.6px;font-weight:800}
section .lead{text-align:center;color:var(--muted);max-width:640px;margin:0 auto 40px;font-size:16px}
.cta-final{background:linear-gradient(180deg,#fff,#f6f5ff)}
.grid{display:grid;gap:18px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
@media(max-width:820px){.grid.c3,.grid.c4{grid-template-columns:1fr}.hero h1{font-size:34px}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);transition:.2s}
.card.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#ddd9f5}
.card h3{margin:0 0 8px;font-size:17px;font-weight:700}
.card p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}
.step-n{display:inline-flex;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#eceaff,#ddd9fb);color:var(--brand-d);
  align-items:center;justify-content:center;font-weight:800;font-size:16px;margin-bottom:14px}
.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600}
.badge.pass{background:#e8f7f0;color:#0a7a52}
.badge.agg{background:#eef0ff;color:#4338ca}
.badge.warn{background:#fef3e2;color:#b4730a}

/* code showcase */
.code-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:980px;margin:0 auto}
@media(max-width:820px){.code-grid{grid-template-columns:1fr}}
.code-grid .code{margin:0;height:100%}
pre.code{background:#16162a;color:#d8d8ea;padding:18px 20px;border-radius:14px;overflow:auto;
  font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:13px;line-height:1.7;
  box-shadow:0 12px 32px -14px rgba(20,20,50,.5);border:1px solid #26263f}
pre.code .c-cmt{color:#7a7a99}
pre.code .c-str{color:#9be8a8}
pre.code .c-kw{color:#c79bf0}
.lead code{background:#eceaff;color:var(--brand-d);padding:2px 7px;border-radius:6px;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9em;font-weight:600}

/* pricing calc */
.calc{display:grid;grid-template-columns:300px 1fr;gap:24px;align-items:start}
@media(max-width:820px){.calc{grid-template-columns:1fr}}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
.field input,.field select{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;
  font-size:14px;background:#fff}
.result-row{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;
  border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:#fff}
.result-row .label{font-weight:600}
.result-row .amt{font-variant-numeric:tabular-nums;font-size:15px}
.result-row .mult{font-weight:800;font-size:18px}
.result-row.you{border-color:#c9c5f7;background:#f6f5ff}
.result-row.you .mult{color:var(--brand)}
.result-row.bad-deal .mult{color:var(--bad)}
.muted-note{font-size:12.5px;color:var(--muted);margin-top:8px}

/* auth */
.auth-wrap{max-width:400px;margin:64px auto;padding:0 20px}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:32px;box-shadow:var(--shadow)}
.auth-card h1{font-size:24px;margin:0 0 6px}
.auth-card .sub{color:var(--muted);font-size:14px;margin-bottom:22px}
.auth-card .field input{padding:11px 13px}
.auth-card .btn{width:100%;padding:12px;margin-top:6px}
.err{color:var(--bad);font-size:13px;min-height:18px;margin-top:6px}

/* console */
.console-head{display:flex;justify-content:space-between;align-items:center;padding:22px 0}
.console-head .who{color:var(--muted);font-size:14px}
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:22px;flex-wrap:wrap}
.tab{padding:11px 16px;cursor:pointer;font-weight:600;color:var(--muted);border-bottom:2px solid transparent}
.tab.active{color:var(--brand);border-bottom-color:var(--brand)}
.panel{display:none}
.panel.active{display:block}
.kpi{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:22px}
.kpi .box{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px;min-width:180px}
.kpi .box .k{font-size:13px;color:var(--muted)}
.kpi .box .v{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
th,td{text-align:left;padding:11px 14px;font-size:13.5px;border-bottom:1px solid var(--line)}
th{background:#f7f7fb;color:var(--muted);font-weight:600}
tr:last-child td{border-bottom:none}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
code.key{background:#f4f4f8;border:1px solid var(--line);border-radius:8px;padding:3px 8px;font-size:13px}
.keybox{background:#1a1a2e;color:#a7f3d0;padding:14px;border-radius:10px;font-family:ui-monospace,Menlo,monospace;
  font-size:13px;word-break:break-all;margin:10px 0}
.empty{color:var(--muted);text-align:center;padding:28px;font-size:14px}

footer{border-top:1px solid var(--line);padding:30px 0;color:var(--muted);font-size:13px;text-align:center;margin-top:40px}

/* console layout (left nav) */
.layout{display:flex;min-height:100vh}
.sidebar{width:228px;flex-shrink:0;border-right:1px solid var(--line);background:#fff;
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.sidebar .sb-brand{padding:18px 20px;font-weight:800;font-size:20px;border-bottom:1px solid var(--line)}
.sidebar .sb-brand .dot{color:var(--brand)}
.side-nav{padding:10px 0;flex:1}
.side-item{padding:11px 20px;cursor:pointer;font-weight:600;color:var(--muted);border-left:3px solid transparent}
.side-item:hover{background:#f6f6fb}
.side-item.active{color:var(--brand);border-left-color:var(--brand);background:#f4f3ff}
.side-foot{padding:14px 20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.content{flex:1;padding:26px 32px;max-width:1000px;width:100%}
.content .page-title{margin:0 0 20px;font-size:22px}
@media(max-width:760px){
  .layout{flex-direction:column}
  .sidebar{width:auto;height:auto;position:static}
  .side-nav{display:flex;overflow-x:auto;padding:0}
  .side-item{white-space:nowrap;border-left:none;border-bottom:3px solid transparent}
  .side-item.active{border-left:none;border-bottom-color:var(--brand)}
}
.doc pre.code{margin:8px 0}
.doc h3{margin:24px 0 8px;font-size:17px}
.doc p{font-size:14px}
.doc table{margin:8px 0}

/* toast */
#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:#1a1a2e;color:#fff;padding:11px 18px;border-radius:10px;font-size:14px;opacity:0;
  transition:.25s;pointer-events:none;z-index:50}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#toast.bad{background:var(--bad)}