:root{--bg: #fbfbfa;--surface: #ffffff;--border: #ececea;--border-strong: #d8d8d4;--text: #1f1f1d;--text-2: #6b6b66;--text-3: #9b9b94;--accent: #2f6df6;--accent-soft: #eef3fe;--pos: #1a9d6b;--pos-soft: #e7f6ee;--warn: #c2740a;--warn-soft: #fbf0dd;--neg: #d24b4b;--r: 12px;--r-sm: 8px;--shadow: 0 1px 2px rgba(20, 20, 18, .04), 0 0 0 1px var(--border);font-family:-apple-system,SF Pro Text,PingFang SC,Noto Sans SC,system-ui,sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}body{margin:0;font-size:15px;line-height:1.65}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{letter-spacing:-.01em}.site-header{border-bottom:1px solid var(--border);background:var(--surface);position:sticky;top:0;z-index:10}.site-header-inner{max-width:980px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:20px}.site-brand{display:flex;align-items:center;gap:9px;font-weight:650;font-size:16px;color:var(--text)}.site-brand:hover{text-decoration:none}.site-logo{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--accent),#7a5cff);display:grid;place-items:center;color:#fff;font-size:14px}.site-nav{display:flex;gap:4px;margin-left:auto;align-items:center}.site-nav a{color:var(--text-2);font-size:14px;padding:7px 12px;border-radius:var(--r-sm)}.site-nav a:hover{background:var(--surface-2);color:var(--text);text-decoration:none}.site-nav a.active{color:var(--accent);font-weight:550;background:var(--accent-soft)}.site-main{max-width:980px;margin:0 auto;padding:48px 24px 80px}.site-hero{text-align:center;padding:40px 0 32px}.site-hero h1{font-size:clamp(28px,5vw,40px);margin:0 0 14px}.site-hero .lead{font-size:17px;color:var(--text-2);max-width:640px;margin:0 auto 28px}.site-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}.btn{display:inline-block;background:var(--accent);color:#fff;border:none;border-radius:var(--r-sm);padding:12px 22px;font-size:15px;font-weight:600;cursor:pointer;font-family:inherit}.btn:hover{filter:brightness(1.05);text-decoration:none}.btn.ghost{background:var(--surface);color:var(--text);border:1px solid var(--border-strong)}.btn.lg{padding:14px 28px;font-size:16px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);padding:20px 22px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.section{margin:48px 0}.section h2{font-size:22px;margin:0 0 6px}.section .sub{color:var(--text-2);margin:0 0 20px}.feature-icon{width:34px;height:34px;border-radius:9px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-size:18px;margin-bottom:10px}.card h3{margin:0 0 8px;font-size:16px}.card p{margin:0;color:var(--text-2);font-size:13.5px}.privacy-box{background:var(--pos-soft);border:1px solid rgba(26,157,107,.25);border-radius:var(--r);padding:18px 20px;color:#1a6b3e;font-size:14px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:24px 0}.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:16px;position:relative}.step .num{width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:650;font-size:13px;margin-bottom:10px}.step h4{margin:0 0 6px;font-size:15px}.step p{margin:0;color:var(--text-2);font-size:13px}.guide-step{display:grid;grid-template-columns:46px 1fr;gap:14px;align-items:start;margin-bottom:18px}.guide-step .dot{width:34px;height:34px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-weight:650}.guide-step h3{margin:0 0 6px;font-size:16px}.guide-step p{margin:0 0 8px;color:var(--text-2);font-size:14px}.guide-step ul{margin:6px 0 0;padding-left:20px;color:var(--text-2);font-size:13.5px}.code{background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:12px 14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;overflow-x:auto;margin:10px 0}.opt-out-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-sm);margin:16px 0}table.data{width:100%;border-collapse:collapse;font-size:13.5px}table.data th{text-align:left;font-weight:600;color:var(--text-3);font-size:12px;letter-spacing:.03em;padding:9px 12px;border-bottom:1px solid var(--border)}table.data td{padding:11px 12px;border-bottom:1px solid var(--border);vertical-align:top}.site-footer{border-top:1px solid var(--border);background:var(--surface)}.site-footer-inner{max-width:980px;margin:0 auto;padding:26px 24px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;color:var(--text-3);font-size:12.5px}@media (max-width: 860px){.grid-3,.grid-2,.steps{grid-template-columns:1fr}.site-nav a{padding:6px 8px}}