:root{--b:#1976d2;--bg:#eef8ff;--card:#fff;--text:#18344f;--line:#cfe4f6}*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.wrap{max-width:1180px;margin:auto;padding:18px}.brand{font-weight:800;color:#145b9e}.nav{float:right}.nav a{margin-left:14px;color:#245; text-decoration:none}.hero{background:linear-gradient(135deg,#dff3ff,#fff);padding:26px;border-radius:18px;margin:18px 0}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 10px 28px #2472a414}.full{grid-column:1/-1}label{font-weight:700;font-size:14px;display:block;margin-bottom:6px}input,select,textarea{width:100%;padding:11px;border:1px solid #b9d8ee;border-radius:9px;background:#fff}textarea{min-height:110px}.btn{display:inline-block;background:var(--b);color:#fff;border:0;padding:11px 16px;border-radius:9px;font-weight:700;text-decoration:none;cursor:pointer}.btn.alt{background:#fff;color:var(--b);border:1px solid var(--b)}table{border-collapse:collapse;width:100%;font-size:13px}th,td{border:1px solid #cddfea;padding:8px;vertical-align:top}th{background:#e7f5ff}.sidebar{position:sticky;top:85px}.layout{display:grid;grid-template-columns:280px 1fr;gap:18px}.item{display:block;padding:9px;border-radius:8px;text-decoration:none;color:#245}.item:hover{background:#e7f5ff}.notice{padding:12px;background:#fff4ce;border-radius:10px;margin:12px 0}@media(max-width:800px){.grid,.layout{grid-template-columns:1fr}.nav{float:none;margin-top:10px}.sidebar{position:static}}