:root{--red:#df1f2d;--dark:#151821;--muted:#667085;--bg:#f6f7fb;--card:#fff;--line:#e7e9ef;--shadow:0 14px 35px rgba(16,24,40,.08);--radius:18px}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:Inter,Segoe UI,Arial,sans-serif;color:#1f2430}a{color:var(--red);text-decoration:none}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:30px}.login-card{width:430px;background:#fff;border-radius:24px;box-shadow:var(--shadow);padding:34px}.logo{max-width:260px;display:block;margin:0 auto 24px}.field{margin-bottom:14px}.field label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}.input,.select,textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px 13px;font-size:14px;background:#fff}.btn{border:0;border-radius:12px;padding:11px 16px;background:var(--red);color:#fff;font-weight:800;cursor:pointer;display:inline-block}.btn.secondary{background:#252a37}.btn.light{background:#fff;color:#222;border:1px solid var(--line)}.btn.danger{background:#c91828}.muted{color:var(--muted);font-size:13px}.layout{display:flex;min-height:100vh}.sidebar{width:250px;background:#fff;border-right:1px solid var(--line);padding:20px;position:sticky;top:0;height:100vh}.sidebar img{max-width:180px;margin-bottom:20px}.sidebar a{display:block;padding:12px 13px;margin:5px 0;border-radius:12px;color:#333;font-weight:700}.sidebar a:hover,.sidebar a.active{background:#fff1f2;color:var(--red)}.main{flex:1;padding:26px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:18px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden}.table th,.table td{border-bottom:1px solid var(--line);padding:11px;text-align:left;vertical-align:top}.table th{background:#fafafa;font-size:13px}.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#f2f4f7;font-size:12px;font-weight:800}.badge.red{background:#fff1f2;color:var(--red)}.pill{display:inline-block;margin:2px;padding:4px 8px;border-radius:99px;background:#eef2ff}.tabs a{padding:10px 13px;background:#fff;border:1px solid var(--line);border-radius:12px;margin-right:8px;display:inline-block}.profile-cover{height:150px;background:linear-gradient(110deg,#df1f2d,#ff7b85);border-radius:20px 20px 0 0}.profile-head{display:flex;gap:18px;align-items:end;margin-top:-45px;padding:0 20px 20px}.avatar{width:95px;height:95px;border-radius:50%;background:#fff;border:5px solid #fff;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;font-size:38px;font-weight:900;color:var(--red)}.article-body{font-size:18px;line-height:1.8}.special-word{font-weight:900;color:var(--red);border-bottom:2px solid var(--red);cursor:pointer}.vocab-word{border-bottom:1px dashed #475467;cursor:pointer}.modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:none;align-items:center;justify-content:center;padding:20px}.modal-box{background:#fff;border-radius:18px;max-width:520px;width:100%;padding:22px}.toolbar button{padding:8px 10px;border:1px solid var(--line);background:#fff;border-radius:9px;margin:2px}.editor{min-height:330px;border:1px solid var(--line);border-radius:14px;padding:14px;background:#fff;overflow:auto}.star{font-size:26px;cursor:pointer;color:#c6c6c6}.star.active{color:#f5a400}.notice{padding:12px 14px;background:#ecfdf3;border:1px solid #abefc6;border-radius:12px;margin-bottom:12px}.error{padding:12px 14px;background:#fff1f2;border:1px solid #fecdd3;border-radius:12px;margin-bottom:12px}@media(max-width:800px){.layout{display:block}.sidebar{width:100%;height:auto;position:relative}.main{padding:16px}.login-card{width:100%}}