:root{--bg:#f6f8fc;--card:#fff;--ink:#172033;--muted:#657089;--line:#e5eaf3;--accent:#2f5cff;--accent2:#ff7a45;--soft:#eef3ff;--radius:22px;--shadow:0 18px 42px rgba(27,40,84,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75}a{color:inherit;text-decoration:none}img,video{max-width:100%;display:block}button,input{font:inherit}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:1180px;margin:0 auto;padding:14px 20px}.brand,.footer-logo{display:flex;align-items:center;gap:12px}.brand img,.footer-logo img{border-radius:14px;object-fit:cover}.brand strong{font-size:26px;letter-spacing:.5px}.brand em{display:block;font-style:normal;color:var(--muted);font-size:13px}.domain-line{font-size:14px;color:var(--muted);margin:0}.main-nav{max-width:1180px;margin:0 auto;display:flex;gap:10px;overflow:auto;padding:0 20px 12px}.main-nav a{white-space:nowrap;padding:8px 14px;background:var(--soft);border:1px solid transparent;border-radius:999px;color:#26365d;font-weight:700}.main-nav a:hover{border-color:#c8d4ff;background:#fff}.fake-search{max-width:1180px;margin:0 auto 12px;padding:0 20px;display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center}.fake-search label{font-weight:800;color:#23315f}.fake-search input{width:100%;border:1px solid var(--line);border-radius:999px;padding:10px 16px;background:#fff}.fake-search button,.btn{border:0;border-radius:999px;padding:10px 18px;background:var(--accent);color:#fff;font-weight:800;cursor:pointer;box-shadow:0 10px 24px 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8px;font-size:20px;line-height:1.35}.meta,.tags,.mini-meta{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:13px}.tag{background:var(--soft);border-radius:999px;padding:4px 9px;color:#2c3d78;font-weight:700}.hot-list{counter-reset:item;display:grid;gap:12px}.hot-list a{counter-increment:item;display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:14px;border-radius:16px;background:#fff;border:1px solid var(--line)}.hot-list a:before{content:counter(item);width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#fff0e8;color:#ba4f16;font-weight:900}.author-card{display:flex;gap:14px;align-items:flex-start}.avatar{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;display:grid;place-items:center;font-weight:900;flex:0 0 auto}.faq details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px}.faq 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