:root{--bg:#07101d;--panel:#101c2d;--line:#24364e;--text:#edf6ff;--muted:#a9bad0;--blue:#46a7ff;--cyan:#75d8ff;--max:980px}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 50% -10%,#173a62 0,#07101d 42%);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.8}a{color:var(--cyan);text-decoration:none}a:hover{text-decoration:underline}.site-head{border-bottom:1px solid var(--line);background:rgba(7,16,29,.9);position:sticky;top:0;backdrop-filter:blur(10px);z-index:2}.head-inner,.wrap{max-width:var(--max);margin:auto;padding:0 22px}.head-inner{height:66px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:800;font-size:20px;color:#fff}.head-nav{display:flex;gap:18px;font-size:14px}.hero{padding:68px 0 35px}.eyebrow{color:var(--blue);font-weight:700;letter-spacing:.12em;font-size:13px}.hero h1{font-size:clamp(30px,5vw,48px);line-height:1.25;margin:10px 0 18px}.lead{color:#c9d8e9;font-size:18px;max-width:800px}.meta{color:var(--muted);font-size:14px}.article{background:rgba(16,28,45,.92);border:1px solid var(--line);border-radius:18px;padding:clamp(24px,5vw,52px);margin:20px 0 44px;box-shadow:0 20px 60px rgba(0,0,0,.2)}.article h2{margin-top:38px;font-size:25px;line-height:1.4}.article p{color:#d5e1ee}.checklist{background:#0a1626;border-left:4px solid var(--blue);padding:18px 22px;margin:28px 0;border-radius:8px}.checklist strong{display:block;margin-bottom:8px}.faq{margin-top:42px;border-top:1px solid var(--line);padding-top:18px}.faq details{border-bottom:1px solid var(--line);padding:14px 0}.faq summary{cursor:pointer;font-weight:700}.related{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:22px 0}.related a,.card{display:block;background:#0d1a2a;border:1px solid var(--line);border-radius:12px;padding:17px}.related a:hover,.card:hover{border-color:var(--blue);text-decoration:none}.blog-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:10px 0 60px}.card h2{font-size:20px;margin:4px 0 8px;color:#fff}.card p{color:var(--muted);margin:0}.tag{color:var(--blue);font-size:13px;font-weight:700}.footer{border-top:1px solid var(--line);color:var(--muted);text-align:center;padding:28px 20px;font-size:14px}@media(max-width:680px){.head-nav{gap:10px}.blog-grid,.related{grid-template-columns:1fr}.hero{padding-top:42px}.article{border-radius:12px}.lead{font-size:16px}}

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