:root{--student-red:#ef1b23;--student-dark:#171717;--student-bg:#f7f7f9;--student-line:#e9e3e3;--student-muted:#777}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--student-bg);color:#171717}a{color:inherit;text-decoration:none}.student-page{min-height:100vh}.student-top{background:#fff;border-bottom:1px solid var(--student-line);position:sticky;top:0;z-index:20}.student-top-inner{max-width:1180px;margin:auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:15px}.student-brand{display:flex;align-items:center;gap:10px;font-weight:900}.student-brand img{width:42px;height:42px;object-fit:contain}.student-container{max-width:1180px;margin:auto;padding:28px 20px 60px}.student-card{background:#fff;border:1px solid var(--student-line);border-radius:18px;padding:22px;box-shadow:0 8px 25px rgba(0,0,0,.04);margin-bottom:18px}.student-login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(135deg,#fff,#fff5f5)}.student-login-card{width:min(440px,100%);background:#fff;border:1px solid var(--student-line);border-radius:24px;padding:30px;box-shadow:0 20px 60px rgba(0,0,0,.08)}.student-logo{width:76px;height:76px;object-fit:contain;display:block;margin:0 auto 12px}.student-login-card h1{text-align:center;margin:0 0 7px}.student-sub{text-align:center;color:var(--student-muted);margin:0 0 22px}.student-field{display:grid;gap:7px;margin-bottom:14px}.student-field label{font-weight:800;font-size:.85rem}.student-field input{width:100%;padding:12px;border:1px solid #ddd;border-radius:11px;outline:0}.student-field input:focus{border-color:var(--student-red);box-shadow:0 0 0 3px rgba(239,27,35,.08)}.student-btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 15px;border-radius:10px;border:1px solid transparent;cursor:pointer;font-weight:800}.student-btn-primary{background:var(--student-red);color:#fff}.student-btn-outline{background:#fff;border-color:#ddd}.student-alert{padding:12px 14px;border-radius:10px;margin-bottom:15px}.student-alert.error{background:#fff0f0;color:#a10f16}.student-alert.success{background:#eaf8f0;color:#146c43}.student-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.student-stat{background:#fff;border:1px solid var(--student-line);border-radius:16px;padding:18px}.student-stat strong{display:block;font-size:1.4rem;margin-top:6px}.student-muted{color:var(--student-muted)}.student-actions{display:flex;gap:8px;flex-wrap:wrap}@media(max-width:760px){.student-grid{grid-template-columns:1fr}.student-top-inner{padding:12px 14px}.student-container{padding:20px 14px 50px}}

.student-security-alert{display:flex;align-items:center;gap:16px;background:#fff8e6;border:1px solid #f2cf78;border-left:5px solid #e4a700;border-radius:16px;padding:18px 20px;margin-bottom:18px;box-shadow:0 8px 25px rgba(0,0,0,.04)}.student-security-icon{font-size:1.8rem;line-height:1}.student-security-content{flex:1}.student-security-content strong{display:block;font-size:1rem;margin-bottom:6px}.student-security-content p{margin:0;color:#6f5c29;line-height:1.45}.student-security-alert .student-btn{white-space:nowrap}
@media(max-width:760px){.student-security-alert{align-items:flex-start;flex-wrap:wrap}.student-security-alert .student-btn{width:100%}}