:root{--bg:#faf9f7;--bg-soft:#f3f1ec;--card:#ffffff;--ink:#1c1a17;--ink-2:#6b655c;--ink-3:#9a938a;--line:#e8e4dd;--brand:#ff5a5f;--brand-ink:#ffffff;--brand-2:#2d6cdf;--ok:#1f9d61;--warn-bg:#fff7e0;--warn-ink:#8a6116;--err-bg:#fdecec;--err-ink:#b3261e;--radius:14px;--radius-sm:9px;--shadow:0 1px 2px rgba(28,26,23,0.05),0 8px 24px -12px rgba(28,26,23,0.18);--space:24px}*{box-sizing:border-box}body,html{padding:0;margin:0}body{background:var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Microsoft YaHei,sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--brand-2);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{line-height:1.25;letter-spacing:-.01em}.page{max-width:1080px;margin:0 auto;padding:48px 28px 96px}.page-wide{max-width:1280px}.hero{padding:96px 0 56px;text-align:center}.hero h1{font-size:52px;margin:0 0 20px}.hero p.lead{font-size:20px;color:var(--ink-2);max-width:640px;margin:0 auto 36px}.section{margin-top:72px}.section h2{font-size:30px;margin:0 0 28px}.muted{color:var(--ink-2)}.small{font-size:14px}.gap{height:var(--space)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}.grid{display:grid;grid-gap:20px;gap:20px}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:600;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;padding:12px 22px;border-radius:999px;border:1px solid transparent;transition:filter .15s,transform .05s,background .15s;text-decoration:none!important}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--brand);color:var(--brand-ink)}.btn-primary:hover:not(:disabled){filter:brightness(1.06)}.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover:not(:disabled){filter:brightness(1.2)}.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}.btn-ghost:hover:not(:disabled){background:var(--bg-soft)}.btn-block{width:100%}.btn-lg{padding:15px 30px;font-size:17px}.field{margin-bottom:22px}.field label{display:block;font-weight:600;margin-bottom:8px}.input,.select,.textarea{width:100%;font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;outline:none;transition:border-color .15s,box-shadow .15s}.input:focus,.select:focus,.textarea:focus{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(45,108,223,.15)}.hint{color:var(--ink-3);margin-top:6px}.badge,.hint{font-size:13px}.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-weight:600}.badge-green{background:#e5f6ec;color:var(--ok)}.badge-gray{background:var(--bg-soft);color:var(--ink-2)}.badge-blue{background:#e8f0fd;color:var(--brand-2)}.alert{border-radius:var(--radius-sm);padding:12px 16px;font-size:14px;margin:14px 0}.alert-warn{background:var(--warn-bg);color:var(--warn-ink)}.alert-err{background:var(--err-bg);color:var(--err-ink)}.topnav{position:-webkit-sticky;position:sticky;top:0;z-index:20;background:rgba(250,249,247,.85);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.topnav-inner{max-width:1080px;margin:0 auto;padding:14px 28px;display:flex;align-items:center;gap:28px}.logo{font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--ink)}.logo em{font-style:normal;color:var(--brand)}.nav-links{display:flex;gap:20px;flex:1 1}.nav-links a{color:var(--ink-2);font-weight:500}.nav-links a:hover{color:var(--ink);text-decoration:none}.nav-right{display:flex;align-items:center;gap:14px}.lang-switch{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--line);border-radius:999px;background:var(--card) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M1 1l4 4 4-4' stroke='%236b655c' stroke-width='1.5' fill='none' stroke-linecap='round'/></svg>") no-repeat right 10px center;padding:6px 26px 6px 14px;font-size:13px;color:var(--ink-2);cursor:pointer}.legal-page{max-width:760px;margin:0 auto;padding:56px 28px 80px}.legal-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}.legal-brand{display:inline-block;font-weight:700;color:var(--ink);text-decoration:none}.legal-head{margin-bottom:40px}.legal-head h1{font-size:30px;line-height:1.25;margin:0 0 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var(--line);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--ink-3)}.site-footer a{color:var(--ink-2);text-decoration:none;margin-left:18px}.site-footer a:hover{color:var(--brand)}.footer-support{margin-left:22px}.footer-support a{margin-left:0}.app-footer{border-top:1px solid var(--line);padding:18px 28px;text-align:center;font-size:13px;color:var(--ink-3)}.app-footer a{color:var(--ink-2);text-decoration:none}.app-footer a:hover{color:var(--brand)}.center{text-align:center}.spinner{width:28px;height:28px;margin:12vh auto;border:3px solid var(--line);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite}@keyframes 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