*{box-sizing:border-box}body{margin:0;background:#f5f8fc;color:#17243b;font-family:Inter,"Microsoft YaHei",Arial,sans-serif}a{color:inherit;text-decoration:none}.top{background:#fff;border-bottom:1px solid #e5edf6}.nav{max-width:1160px;margin:auto;padding:18px 22px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:20px;font-weight:800;color:#1769c2}.brand span{color:#17243b}.nav small{color:#718198}.wrap{max-width:1160px;margin:auto;padding:34px 22px}.hero{background:linear-gradient(120deg,#e8f3ff,#fff 65%);border:1px solid #d9e9fb;border-radius:22px;padding:38px;margin-bottom:28px}.eyebrow{color:#1971c9;font-weight:700;font-size:13px;letter-spacing:1px}.hero h1{font-size:34px;margin:12px 0;color:#132b4c}.hero p{color:#61738b;line-height:1.8;max-width:700px}.search{width:100%;max-width:560px;padding:14px 16px;border:1px solid #d6e1ee;border-radius:10px;font-size:15px;background:white}.section-title{font-size:22px;margin:30px 0 16px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:#fff;border:1px solid #e4ebf3;border-radius:15px;padding:20px;transition:.2s}.card:hover{transform:translateY(-3px);border-color:#9fc7f1;box-shadow:0 10px 25px #23476d0c}.ico{width:38px;height:38px;border-radius:11px;background:#eaf4ff;color:#176bc0;display:grid;place-items:center;font-weight:800}.card h3{margin:13px 0 7px;font-size:17px}.card p{margin:0;color:#718198;font-size:13px;line-height:1.7}.toolbox{background:#fff;border:1px solid #e4ebf3;border-radius:16px;padding:25px;max-width:820px}.field{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}.field input,.field select,textarea{padding:12px;border:1px solid #d6e1ee;border-radius:9px;font-size:15px;min-width:180px;flex:1}.btn{border:0;background:#176bc0;color:#fff;padding:12px 20px;border-radius:9px;cursor:pointer;font-weight:700}.btn:hover{background:#10569c}.result{background:#f3f7fb;border-radius:10px;padding:15px;margin-top:15px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7}.muted{color:#718198;font-size:13px}.ad{margin:25px 0;padding:18px;border:1px dashed #bdcbdc;border-radius:12px;text-align:center;color:#98a5b5;background:#fbfdff;font-size:12px}.footer{border-top:1px solid #e5edf6;margin-top:50px;padding:25px 0;color:#8391a3;font-size:13px}.crumb{color:#718198;font-size:13px;margin-bottom:18px}@media(max-width:800px){.grid{grid-template-columns:repeat(2,1fr)}.hero{padding:25px}.hero h1{font-size:27px}}@media(max-width:520px){.grid{grid-template-columns:1fr}.wrap{padding:22px 15px}.nav{padding:15px}.nav small{display:none}}

.content-section{max-width:900px;margin:34px 0;line-height:1.85;color:#43546b}
.content-section h2{font-size:21px;color:#172f50;margin:25px 0 10px}
.content-section h3{font-size:16px;color:#1c4777;margin:0 0 8px}
.content-section p{margin:8px 0 16px}
.content-section ol{padding-left:22px}
.content-section li{padding:4px 0}
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0}
.topic-grid>div{background:#fff;border:1px solid #e4ebf3;border-radius:13px;padding:18px}
.topic-grid p{margin:0;color:#718198;font-size:14px}
.related-links{display:flex;flex-wrap:wrap;gap:10px}
.related-links a{background:#fff;border:1px solid #dce7f3;border-radius:9px;padding:9px 13px;color:#176bc0;font-size:14px}
.related-links a:hover{border-color:#176bc0;background:#f3f8ff}
.faq{background:#fff;border:1px solid #e4ebf3;border-radius:10px;padding:13px 16px;margin:9px 0}
.faq summary{cursor:pointer;font-weight:700;color:#234366}
.faq p{margin:10px 0 0;color:#63758c}
.crumb a{color:#176bc0}
.footer a{color:#176bc0}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #9bc8f2;outline-offset:2px}
@media(max-width:600px){.topic-grid{grid-template-columns:1fr}.content-section h2{font-size:19px}}