:root{--coral:#f8716b;--purple:#a78bfa;--blue:#1B3A5C;--ink:#1f2430;--muted:#6b7280;--line:#e8e6f2;--bg:#faf9fc}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--ink);background:var(--bg);line-height:1.85;font-size:16.5px;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
.wrap{max-width:800px;margin:0 auto;padding:0 24px}
.topbar{background:#fff;border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-weight:800;font-size:17px}
.brand .dot{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--coral),var(--purple));color:#fff;font-size:15px;margin-right:8px}
.topbar .actions{display:flex;align-items:center;gap:14px}
.back{color:var(--muted);font-size:14px}
.consult{background:linear-gradient(135deg,var(--coral),#f59e9a);color:#fff;padding:8px 18px;border-radius:99px;font-size:14px;font-weight:600}
.hero{padding:48px 0 28px;background:linear-gradient(180deg,#fff,var(--bg))}
.hero .meta{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.tag{font-size:13px;font-weight:600;padding:4px 12px;border-radius:99px;background:#fef2f2;color:var(--coral)}
.date{font-size:13px;color:var(--muted)}
.hero h1{font-size:30px;line-height:1.4;font-weight:800;letter-spacing:-0.01em;margin-bottom:16px}
.lead{font-size:16px;color:var(--muted);line-height:1.8}
.toc{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 24px;margin:0 0 28px}
.toc b{font-size:14px;color:var(--blue);display:block;margin-bottom:8px}
.toc a{display:inline-block;font-size:14px;color:var(--muted);margin:3px 16px 3px 0}
.toc a:hover{color:var(--coral)}
.body h2{font-size:23px;font-weight:700;margin:44px 0 18px;padding-left:14px;border-left:4px solid var(--coral);line-height:1.4}
.body h3{font-size:18px;font-weight:700;margin:30px 0 12px;color:var(--blue)}
.body p{margin-bottom:16px}
.body ul,.body ol{margin:0 0 20px 22px}
.body li{margin-bottom:8px}
.formula{background:#fff;border:1px solid var(--line);border-left:3px solid var(--purple);border-radius:10px;padding:14px 18px;margin:12px 0 18px;font-weight:600;color:var(--blue)}
.note{background:#f0f7ff;border-left:3px solid #3b82f6;border-radius:10px;padding:14px 18px;margin:14px 0;font-size:15px}
table{width:100%;border-collapse:collapse;margin:16px 0 22px;background:#fff;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
th{background:#f5f5fa;font-weight:600;color:var(--blue)}
tr:last-child td{border-bottom:none}
.advice{margin:16px 0}
.advice .item{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:12px}
.advice .num{flex-shrink:0;width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--coral),var(--purple));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.advice .item p{font-size:15px;margin:0}
.advice .item b{color:var(--blue)}
.cta{background:linear-gradient(135deg,var(--coral),var(--purple));color:#fff;border-radius:18px;padding:30px;text-align:center;margin:40px 0 24px}
.cta h3{font-size:20px;margin-bottom:8px}
.cta p{font-size:14px;opacity:.9;margin-bottom:16px}
.cta a.btn{display:inline-block;background:#fff;color:var(--blue);padding:11px 26px;border-radius:10px;font-weight:700;margin:0 6px}
footer{background:#1f2430;color:#9ca3af;font-size:13px;padding:26px 0;margin-top:20px}
footer .wrap{text-align:center}
footer .links{margin-bottom:12px}
footer .links a{color:#c7d2fe;margin:0 10px}
footer .beian{margin-top:10px}
footer .beian a{color:#9ca3af}
footer .disclaim{margin-top:10px;line-height:1.8;color:#6b7280}
@media(max-width:640px){.hero h1{font-size:24px}.body h2{font-size:20px}}