*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:#f7f8fa;color:#111;display:flex}aside{width:240px;min-height:100vh;background:#fff;border-right:1px solid #e7e7e7;padding:24px;position:sticky;top:0}.brand{display:flex;flex-direction:column;margin-bottom:35px}.brand b{font-size:25px}.brand span{font-size:12px;color:#777}nav a{display:block;padding:12px;color:#444;text-decoration:none;border-radius:10px;margin:4px 0}nav a:hover{background:#f0f0f0}main{width:calc(100% - 240px);padding:28px;max-width:1600px}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}header h1{margin:4px 0;font-size:30px}.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.card{background:#fff;border:1px solid #e8e8e8;border-radius:16px;padding:20px;margin-bottom:18px;box-shadow:0 5px 20px #00000008}.card strong{display:block;font-size:28px;margin-top:8px}small,.hint{color:#777}input,textarea,select{width:100%;padding:12px;border:1px solid #dcdfe4;border-radius:10px;margin:5px 0;font:inherit}textarea{min-height:80px}button,.btn{display:inline-block;border:0;border-radius:10px;padding:12px 17px;background:#111;color:#fff;text-decoration:none;font-weight:700;margin-top:8px;cursor:pointer}.formgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.tabs{display:flex;gap:8px;margin-bottom:15px}.tab{padding:10px 15px;background:#fff;border:1px solid #ddd;border-radius:10px;color:#111;text-decoration:none}.columns{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:10px;border-bottom:1px solid #eee;vertical-align:top}.calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.day{min-height:100px;border:1px solid #eee;border-radius:10px;padding:8px}.day small{display:block;margin-top:7px;background:#f2f3f5;padding:5px;border-radius:6px}.alert{padding:10px;background:#fff0f0;color:#b00020;border-radius:8px;margin-bottom:10px}.login{display:grid;place-items:center;min-height:100vh;background:#f7f8fa}.loginbox{width:min(420px,90vw);background:#fff;padding:35px;border-radius:20px;box-shadow:0 15px 45px #0001}.loginbox button{width:100%}.loginbox small{display:block;margin-top:15px}@media(max-width:900px){aside{width:190px}main{width:calc(100% - 190px);padding:18px}.grid4,.columns{grid-template-columns:repeat(2,1fr)}.formgrid{grid-template-columns:1fr}.calendar{grid-template-columns:repeat(4,1fr)}}@media(max-width:600px){body{display:block}aside{width:100%;min-height:auto;position:relative;padding:15px}nav{display:flex;overflow:auto;gap:4px}nav a{white-space:nowrap}main{width:100%;padding:14px}.grid4,.columns{grid-template-columns:1fr}.calendar{grid-template-columns:repeat(2,1fr)}table{display:block;overflow:auto;white-space:nowrap}header h1{font-size:24px}}