:root{--bg: #f6f8fb;--card: #ffffff;--ink: #17233b;--muted: #5c6b85;--brand: #2456e6;--brand-dark: #1a3fae;--ok: #12855f;--warn: #b96a00;--err: #c0392b;--border: #dde4ef;--radius: 12px}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif;background:var(--bg);color:var(--ink)}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1080px;margin:0 auto;padding:0 20px}.nav{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.nav-inner{display:flex;align-items:center;gap:18px;height:58px}.nav-brand{font-weight:800;font-size:18px;color:var(--ink)}.nav-links{display:flex;gap:14px;flex:1}.nav-links a{color:var(--muted);font-size:14px}.nav-links a.active{color:var(--brand);font-weight:600}.nav-right{display:flex;gap:10px;align-items:center}.btn{display:inline-block;border:none;border-radius:8px;cursor:pointer;padding:9px 16px;font-size:14px;background:var(--brand);color:#fff;font-weight:600}.btn:hover{background:var(--brand-dark)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-outline{background:transparent;color:var(--brand);border:1px solid var(--brand)}.btn-outline:hover{background:#eef3ff}.btn-ghost{background:transparent;color:var(--muted)}.btn-danger{background:var(--err)}.btn-sm{padding:5px 10px;font-size:13px}.hero{padding:64px 0 40px;text-align:center;background:linear-gradient(180deg,#eaf1ff 0%,var(--bg) 100%)}.hero h1{font-size:34px;margin:0 0 14px}.hero p{color:var(--muted);max-width:640px;margin:0 auto 22px;font-size:16px;line-height:1.7}.hero .disclaimer{font-size:12px;color:var(--warn);margin-top:18px}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;padding:24px 0 56px}.feature{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:left}.feature h3{margin:0 0 8px;font-size:16px}.feature p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin:16px 0}.card h2{margin-top:0;font-size:20px}.card h3{font-size:16px}.grid{display:grid;gap:14px}.grid-3{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.grid-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}.price-card{display:flex;flex-direction:column;gap:8px}.price-card .price{font-size:24px;font-weight:800;color:var(--brand)}.price-card .limit{color:var(--muted);font-size:13px}.price-card .desc{color:var(--muted);font-size:13px;min-height:34px}.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:12px;background:#eef3ff;color:var(--brand)}.badge-free{background:#e5f6ef;color:var(--ok)}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--border);vertical-align:top}th{color:var(--muted);font-weight:600;font-size:13px}label{display:block;font-size:13px;color:var(--muted);margin:12px 0 4px}input,select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:#fff;color:var(--ink)}input:focus,select:focus{outline:2px solid #bcd0ff;border-color:var(--brand)}.auth-box{max-width:420px;margin:48px auto}.oauth-row{display:flex;gap:10px;margin-top:14px}.alert{padding:10px 14px;border-radius:8px;font-size:13px;margin:10px 0}.alert-err{background:#fdeceb;color:var(--err)}.alert-ok{background:#e5f6ef;color:var(--ok)}.alert-warn{background:#fdf3e3;color:var(--warn)}.score-ring{width:130px;height:130px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:conic-gradient(var(--brand) calc(var(--pct) * 1%),#e8edf6 0);margin:0 auto 8px}.score-ring-inner{width:104px;height:104px;border-radius:50%;background:var(--card);display:flex;flex-direction:column;align-items:center;justify-content:center}.score-ring .num{font-size:28px;font-weight:800}.score-ring .lbl{font-size:11px;color:var(--muted)}.segment{background:#fbfcff;border:1px solid var(--border);border-left:3px solid var(--brand);border-radius:6px;padding:8px 12px;margin:6px 0;font-size:13px}.segment.neardup{border-left-color:var(--warn)}.footer{border-top:1px solid var(--border);margin-top:48px;padding:24px 0;color:var(--muted);font-size:13px}.footer .links{display:flex;gap:16px;margin-bottom:8px}.tabs{display:flex;gap:4px;flex-wrap:wrap;margin:14px 0}.tabs button{border:1px solid var(--border);background:var(--card);padding:7px 14px;border-radius:8px;cursor:pointer;font-size:13px;color:var(--muted)}.tabs button.active{background:var(--brand);border-color:var(--brand);color:#fff}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;display:flex;align-items:center;justify-content:center;z-index:50}.modal{background:var(--card);border-radius:14px;padding:26px;max-width:420px;width:92%;text-align:center}.modal img{width:240px;height:240px}.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin:14px 0}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px}.stat-card .v{font-size:22px;font-weight:800}.stat-card .k{font-size:12px;color:var(--muted)}.mono{font-family:ui-monospace,Consolas,monospace;font-size:12px}