:root{--ink:#132d50;--blue:#1769d4;--line:#cde2f5;--muted:#627b96}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#edf7ff,#fff 420px);color:var(--ink);font:15px/1.55 "Microsoft YaHei",Arial,sans-serif}a{text-decoration:none;color:inherit}header,main,footer{max-width:1180px;margin:auto;padding-left:24px;padding-right:24px}header{height:72px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}header>a:last-child{color:var(--muted);font-size:13px}.brand{font-size:19px;font-weight:900}.brand span,.hero p{color:var(--blue)}.hero{padding:68px 0 42px}.hero p{margin:0 0 10px;font-size:12px;font-weight:900;letter-spacing:1.2px}.hero h1{margin:0;font-size:clamp(42px,6vw,68px);line-height:1.08}.hero span{display:block;max-width:590px;margin-top:17px;color:var(--muted)}.academy-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.academy-group{padding:20px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 10px 28px #1553940b}.academy-group h2{margin:0 0 14px;font-size:18px}.academy-group a{display:flex;align-items:center;min-height:42px;margin-top:7px;padding:8px 10px;border:1px solid #d9e8f5;border-radius:10px;color:#175bab;font-size:13px;font-weight:700}.academy-group a:hover{border-color:#1769d4;background:#edf7ff}.academy-group a:focus-visible{outline:3px solid #8fc5ff;outline-offset:2px}.source{margin:32px 0 70px;color:var(--muted);font-size:13px}.source a{color:var(--blue);font-weight:700}footer{padding-top:26px;padding-bottom:36px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}@media(max-width:760px){header,main,footer{padding-left:18px;padding-right:18px}.hero{padding:48px 0 30px}.academy-grid{grid-template-columns:1fr}.academy-group{border-radius:16px}}