:root{--ink:#18212f;--muted:#647083;--line:#d9e0ea;--soft:#f5f7fa;--accent:#0f7b7e}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.6}
a{color:inherit}.top{display:flex;gap:24px;align-items:center;justify-content:space-between;padding:18px clamp(16px,4vw,46px);border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0}
.brand{font-weight:800;text-decoration:none;font-size:20px}.search{display:flex;gap:8px}.search input{height:38px;border:1px solid var(--line);padding:0 12px}.search button{height:38px;border:0;background:var(--accent);color:#fff;padding:0 14px}
.wrap{max-width:1180px;margin:auto;padding:28px 18px}.hero{padding:26px 0 30px;border-bottom:1px solid var(--line)}.hero h1{font-size:clamp(34px,5vw,62px);line-height:1.05;margin:0 0 12px}.hero p{max-width:760px;color:var(--muted);font-size:18px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;margin-top:24px}.card{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}.card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--soft)}.card div{padding:16px}.card h2{font-size:20px;line-height:1.25;margin:4px 0 8px}.card h2 a{text-decoration:none}.card p{color:var(--muted);margin:0}.date{font-size:13px;color:var(--muted)}
.article{max-width:860px;margin:0 auto;padding:34px 18px}.article h1{font-size:clamp(32px,5vw,54px);line-height:1.08;margin:8px 0 24px}.content img{max-width:100%;height:auto}.content iframe{max-width:100%}.foot{border-top:1px solid var(--line);padding:24px 18px;text-align:center;color:var(--muted);margin-top:30px}
@media(max-width:680px){.top{align-items:flex-start;flex-direction:column}.search,.search input{width:100%}.grid{grid-template-columns:1fr}}