:root{color-scheme:light;--bg:#f7f9fc;--surface:#fff;--surface-soft:#eef4ff;--text:#152033;--muted:#64748b;--line:#dbe4f0;--brand:#2563eb;--brand-dark:#1d4ed8;--accent:#10b981;--shadow:0 18px 45px #1c2a4414;--radius:8px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.container{width:min(1120px,100% - 32px);margin-inline:auto}.site-header{z-index:20;backdrop-filter:blur(16px);background:#f7f9fce0;border-bottom:1px solid #dbe4f0db;position:sticky;top:0}.nav{justify-content:space-between;align-items:center;gap:24px;min-height:70px;display:flex}.brand{letter-spacing:0;align-items:center;gap:10px;font-weight:800;display:inline-flex}.brand-mark{object-fit:cover;border-radius:8px;width:34px;height:34px}.nav-links{color:var(--muted);align-items:center;gap:18px;font-size:15px;display:flex}.nav-links a:hover{color:var(--brand)}.hero{padding:72px 0 44px}.hero-grid{grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);align-items:stretch;gap:32px;display:grid}.hero-panel{border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(135deg, #2563eb1f, #10b98114), var(--surface);box-shadow:var(--shadow);padding:46px}.eyebrow{color:var(--brand);font-size:14px;font-weight:700}h1,h2,h3{letter-spacing:0;margin:0;line-height:1.22}h1{max-width:760px;margin-top:12px;font-size:clamp(36px,5vw,58px)}.hero p{max-width:700px;color:var(--muted);font-size:18px}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:26px;display:flex}.button{border:1px solid var(--line);min-height:42px;color:var(--text);background:#fff;border-radius:8px;justify-content:center;align-items:center;padding:0 18px;font-weight:700;display:inline-flex}.button.primary{border-color:var(--brand);background:var(--brand);color:#fff}.button:hover{transform:translateY(-1px)}.stats{gap:14px;display:grid}.stat{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:22px}.stat strong{font-size:28px;line-height:1;display:block}.stat span{color:var(--muted);font-size:14px}.section{padding:34px 0 58px}.section-head{justify-content:space-between;align-items:end;gap:18px;margin-bottom:22px;display:flex}.section-head p{color:var(--muted);margin:8px 0 0}.post-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.post-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);flex-direction:column;min-height:100%;padding:22px;display:flex;box-shadow:0 10px 28px #1c2a440d}.post-card:hover{border-color:#2563eb73;transform:translateY(-2px)}.meta{color:var(--muted);flex-wrap:wrap;gap:8px;font-size:13px;display:flex}.badge{background:var(--surface-soft);min-height:24px;color:var(--brand-dark);border-radius:999px;align-items:center;padding:0 9px;font-size:13px;font-weight:700;display:inline-flex}.post-card h3{margin-top:14px;font-size:21px}.post-card p{color:var(--muted);margin:12px 0 0}.post-card .read-more{color:var(--brand);margin-top:auto;padding-top:18px;font-weight:700}.term-list{flex-wrap:wrap;gap:10px;display:flex}.term-list a{border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:999px;padding:8px 13px;font-weight:700}.article{width:min(820px,100% - 32px);margin:0 auto;padding:62px 0}.article-header{margin-bottom:34px}.article-header h1{font-size:clamp(34px,5vw,52px)}.article-description{color:var(--muted);font-size:19px}.prose{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:34px}.prose h2{margin-top:34px;font-size:28px}.prose h3{margin-top:28px;font-size:22px}.prose p,.prose li{color:#334155}.prose a{color:var(--brand);text-underline-offset:3px;font-weight:700;text-decoration:underline}.prose code{background:#edf2f7;border-radius:6px;padding:2px 6px}.prose .affiliate-card{background:linear-gradient(135deg,#eff6ff 0%,#fff 58%,#eef2ff 100%);border:1px solid #bfdbfe;border-radius:12px;margin:26px 0;padding:22px;box-shadow:0 18px 36px #2563eb1a}.prose .affiliate-card p{margin:8px 0 0}.prose .affiliate-card strong{color:#0f172a;font-size:20px;display:block}.prose a.affiliate-button{background:var(--brand);color:#fff;border-radius:8px;justify-content:center;align-items:center;min-height:44px;margin-top:16px;padding:0 18px;font-weight:800;text-decoration:none;display:inline-flex;box-shadow:0 12px 24px #2563eb38}.prose a.affiliate-button:hover{transform:translateY(-1px)}.site-footer{border-top:1px solid var(--line);color:var(--muted);padding:32px 0;font-size:14px}.footer-row{justify-content:space-between;gap:18px;display:flex}.search-box{border:1px solid var(--line);width:100%;min-height:48px;font:inherit;border-radius:8px;padding:0 16px}@media (width<=860px){.hero{padding-top:42px}.hero-grid,.post-grid{grid-template-columns:1fr}.hero-panel{padding:28px}.nav{flex-direction:column;align-items:flex-start;padding:14px 0}.nav-links{width:100%;padding-bottom:4px;overflow-x:auto}.section-head,.footer-row{flex-direction:column;align-items:flex-start}}