:root{--blue:#0b5cff;--deep:#061a3a;--gold:#f6c85f;--text:#1d2a3a;--muted:#64748b;--bg:#f5f8ff;--card:#ffffff;--line:#e6edf7}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.8}body.menu-open{overflow:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.top{background:linear-gradient(135deg,#061a3a,#0b5cff);color:#fff}.nav{max-width:1180px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:16px 20px;position:relative}.brand{display:flex;gap:12px;align-items:center;font-weight:800;font-size:22px;line-height:1;white-space:nowrap}.brand img{width:44px;height:44px;border-radius:10px;flex:0 0 auto}.links{display:flex;gap:18px;flex-wrap:wrap;align-items:center}.links a{opacity:.92}.links a:hover{color:var(--gold)}.menu-toggle{display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.24);border-radius:12px;background:rgba(255,255,255,.1);padding:10px;cursor:pointer}.menu-toggle span{display:block;height:2px;background:#fff;border-radius:999px;margin:5px 0;transition:transform .2s ease,opacity .2s ease}.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.hero{max-width:1180px;margin:auto;display:grid;grid-template-columns:1.08fr .92fr;gap:36px;align-items:center;padding:54px 20px 70px}.badge{display:inline-flex;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:6px 14px;margin-bottom:14px}.hero h1{font-size:44px;line-height:1.25;margin:0 0 18px}.hero p{font-size:18px;color:#dfe9ff}.cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-block;padding:12px 22px;border-radius:999px;background:var(--gold);color:#15233b;font-weight:700}.btn.alt{background:#fff;color:var(--blue)}.hero-card{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:24px;padding:18px;box-shadow:0 22px 60px rgba(0,0,0,.22)}.wrap{max-width:1180px;margin:auto;padding:42px 20px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 12px 30px rgba(15,46,90,.06)}.card h3,.card h2{margin-top:0;color:var(--deep)}.section-title{font-size:30px;margin:0 0 12px;color:var(--deep)}.lead{color:var(--muted);font-size:17px}.content{background:#fff}.content h2{font-size:28px;color:var(--deep);margin-top:34px}.content h3{color:#123b78}.toc{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:22px 0}.toc a{background:#eef5ff;border:1px solid #d9e8ff;padding:12px;border-radius:14px;color:#0b5cff;font-weight:700}.image-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.image-row img,.feature-img,.media-card img{border-radius:18px;border:1px solid var(--line);box-shadow:0 10px 24px rgba(15,46,90,.08)}.media-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin:24px 0}.media-card{background:#f8fbff;border:1px solid var(--line);border-radius:22px;padding:18px}.media-card h3{margin:14px 0 8px;color:var(--deep)}.seo-panel{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}.seo-panel .card{box-shadow:none}.step-list{counter-reset:step;display:grid;gap:14px;padding:0}.step-list li{list-style:none;background:#f8fbff;border:1px solid var(--line);border-radius:16px;padding:16px 16px 16px 54px;position:relative}.step-list 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h1{font-size:76px;margin:0;color:var(--blue)}@media(max-width:860px){.nav{padding:12px 16px;align-items:center}.brand{font-size:20px}.brand img{width:42px;height:42px}.menu-toggle{display:block;flex:0 0 auto}.links{display:none;position:absolute;left:16px;right:16px;top:72px;z-index:20;background:#fff;color:var(--deep);border:1px solid rgba(6,26,58,.08);border-radius:18px;padding:12px;box-shadow:0 18px 42px rgba(0,0,0,.2);grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.links.is-open{display:grid}.links a{display:flex;align-items:center;justify-content:center;min-height:44px;padding:8px 10px;border-radius:12px;background:#f1f6ff;color:#123b78;font-size:15px;font-weight:700;opacity:1;text-align:center}.links a[aria-current="page"]{background:var(--blue);color:#fff}.hero{grid-template-columns:1fr;padding-top:36px}.grid,.toc,.image-row,.media-grid,.seo-panel{grid-template-columns:1fr}.hero h1{font-size:34px}}@media(max-width:420px){.links{grid-template-columns:1fr}.brand{font-size:18px}.nav{padding-left:14px;padding-right:14px}}