:root{--bg: #0a0b10;--bg-glow-1: rgba(99, 102, 241, .16);--bg-glow-2: rgba(34, 211, 238, .1);--surface: rgba(255, 255, 255, .045);--surface-2: rgba(255, 255, 255, .075);--surface-solid: #14161f;--border: rgba(255, 255, 255, .09);--border-strong: rgba(255, 255, 255, .16);--primary: #6366f1;--primary-2: #22d3ee;--primary-dim: rgba(99, 102, 241, .18);--primary-gradient: linear-gradient(135deg, var(--primary), var(--primary-2));--success: #34d399;--warning: #fbbf24;--error: #f87171;--text-primary: #f4f5f8;--text-secondary: #9aa0ae;--text-muted: #666d7d;--radius-sm: 10px;--radius-md: 16px;--radius-lg: 22px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 12px 32px -8px rgba(0, 0, 0, .55);--shadow-glow: 0 0 0 1px rgba(99, 102, 241, .25), 0 12px 32px -8px rgba(99, 102, 241, .25)}*{box-sizing:border-box}html{color-scheme:dark}body{margin:0;min-height:100vh;background:var(--bg);background-image:radial-gradient(700px circle at 12% -5%,var(--bg-glow-1),transparent 55%),radial-gradient(600px circle at 90% 15%,var(--bg-glow-2),transparent 50%);background-attachment:fixed;color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,Roboto,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit}button{font-family:inherit}.app{max-width:1040px;margin:0 auto;padding:40px 20px 80px}.header{margin-bottom:28px}.header-top{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.header h1{font-size:30px;font-weight:800;margin:0 0 6px;letter-spacing:-.6px;background:linear-gradient(135deg,#fff,#b8bcff 60%,var(--primary-2));-webkit-background-clip:text;background-clip:text;color:transparent}.subtitle{color:var(--text-secondary);margin:0;font-size:15px}.filters-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px;padding:12px 14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.grid-controls{padding:10px 4px;background:none;border:none;margin-bottom:12px}.filter-select{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);font-weight:500}.filter-select select{background:var(--surface-2);border:1px solid var(--border);color:var(--text-primary);border-radius:var(--radius-sm);padding:7px 12px;font-size:13px;cursor:pointer;transition:border-color .15s ease,box-shadow .15s ease}.filter-select select:hover,.filter-select select:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px var(--primary-dim)}.refresh-btn{background:var(--primary-gradient);border:none;color:#fff;border-radius:var(--radius-sm);padding:9px 18px;font-size:13px;font-weight:700;cursor:pointer;margin-bottom:0;box-shadow:var(--shadow-sm);transition:transform .15s ease,box-shadow .15s ease,opacity .15s ease}.refresh-btn:not(:disabled):hover{transform:translateY(-1px);box-shadow:var(--shadow-glow)}.refresh-btn:disabled{opacity:.55;cursor:default}.error-text{color:var(--error);font-size:14px}.status-text{color:var(--text-secondary);font-size:14px;margin:8px 0 16px}.total-count{font-weight:700;color:var(--text-primary);font-size:15px}.student-grid{display:flex;flex-direction:column;gap:8px;animation:rise-in .4s ease both}@keyframes rise-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.student-card{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:12px 16px;text-decoration:none;color:inherit;cursor:pointer;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);transition:border-color .15s ease,box-shadow .15s ease,background .15s ease,transform .15s ease}.student-card:hover{border-color:var(--border-strong);background:var(--surface-2);transform:translateY(-1px);box-shadow:var(--shadow-glow)}.student-avatar-wrap{position:relative;flex-shrink:0}.student-avatar{width:46px;height:46px;border-radius:13px;object-fit:cover;background:var(--surface-2);border:1px solid var(--border)}.student-avatar-fallback{display:flex;align-items:center;justify-content:center;background:var(--primary-gradient);color:#fff;font-weight:700;font-size:15px}.student-online-dot{position:absolute;bottom:-2px;right:-2px;width:11px;height:11px;border-radius:50%;background:var(--success);border:2px solid var(--surface-solid);box-shadow:0 0 0 3px #34d39933}.student-info{display:flex;flex-wrap:wrap;align-items:baseline;column-gap:8px;row-gap:4px;min-width:0;flex:1}.student-name{font-size:14px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:-.1px}.student-login{font-size:12px;color:var(--text-muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.student-campus{flex-basis:100%;display:inline-flex;width:fit-content;font-size:10px;color:var(--primary-2);background:var(--primary-dim);font-weight:700;padding:3px 9px;border-radius:999px;letter-spacing:.2px}.student-badge{flex-shrink:0;white-space:nowrap;background:var(--surface-2);border:1px solid var(--border);color:var(--warning);font-size:10px;font-weight:700;border-radius:999px;padding:4px 10px}.student-card-owner{border-color:#f5bc3966;background:linear-gradient(160deg,rgba(245,188,57,.12),var(--surface) 70%)}.student-card-owner:hover{border-color:#f5bc39;box-shadow:0 0 0 1px #f5bc394d,0 12px 32px -8px #f5bc394d}.student-badge-owner{flex-shrink:0;background:none;border:none;color:#14141e;font-size:20px;padding:0;filter:drop-shadow(0 2px 3px rgba(0,0,0,.4))}.student-badge-flight{flex-shrink:0;background:var(--primary-dim);border:1px solid var(--border);font-size:13px;padding:4px 8px;margin-left:6px}.student-intra-arrow{flex-shrink:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--surface-2);border:1px solid var(--border);color:var(--primary-2);font-size:13px;text-decoration:none;opacity:0;transition:opacity .15s ease,border-color .15s ease}.student-card:hover .student-intra-arrow{opacity:1}.student-intra-arrow:hover{border-color:var(--primary)}.pagination{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:24px;color:var(--text-secondary);font-size:14px}.pagination button{background:var(--surface);border:1px solid var(--border);color:var(--text-primary);border-radius:var(--radius-sm);padding:8px 16px;cursor:pointer;font-weight:600;transition:border-color .15s ease,transform .15s ease}.pagination button:not(:disabled):hover{border-color:var(--primary);transform:translateY(-1px)}.pagination button:disabled{opacity:.4;cursor:default}.campus-group{margin-bottom:32px;padding-bottom:28px;border-bottom:1px solid var(--border)}.campus-group:last-child{border-bottom:none}.section-heading{font-size:18px;font-weight:800;margin:0 0 14px;letter-spacing:-.2px;display:flex;align-items:center;gap:9px}.section-heading:before{content:"";width:4px;height:16px;border-radius:999px;background:var(--primary-gradient);display:inline-block}.inline-loading{display:flex;align-items:center;gap:10px;color:var(--text-secondary);font-size:14px;margin:8px 0 16px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#06060cb8;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}.modal-sheet{position:relative;background:var(--surface-solid);border:1px solid var(--border-strong);border-radius:24px;max-width:480px;width:100%;max-height:85vh;overflow-y:auto;padding:36px 26px 26px;box-shadow:var(--shadow-md);animation:modal-pop .2s ease both}@keyframes modal-pop{0%{opacity:0;transform:scale(.97) translateY(6px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-close{position:absolute;top:16px;right:16px;background:var(--surface-2);border:1px solid var(--border);color:var(--text-secondary);border-radius:999px;width:32px;height:32px;cursor:pointer;font-size:14px;transition:border-color .15s ease,color .15s ease}.modal-close:hover{border-color:var(--primary);color:var(--text-primary)}.profile-hero{display:flex;flex-direction:column;align-items:center;text-align:center;margin-bottom:24px}.profile-hero h2{margin:4px 0 2px;font-size:22px;font-weight:800;letter-spacing:-.3px}.profile-avatar{width:100px;height:100px;border-radius:50%;border:3px solid var(--primary);object-fit:cover;box-shadow:0 8px 24px -4px #00000080}.profile-avatar-fallback{display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:28px}.profile-login{font-size:14px;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.profile-pill{margin-top:12px;border:1px solid;border-radius:999px;padding:4px 14px;font-size:12px;font-weight:700}.level-bar-wrap{width:100%;margin-top:20px}.level-bar-row{display:flex;justify-content:space-between;font-size:13px;font-weight:700;margin-bottom:7px}.level-track{height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden}.level-fill{height:100%;border-radius:999px;transition:width .4s ease}.level-sub{display:block;font-size:12px;text-align:center;margin-top:8px;font-weight:600}.section-title{font-size:15px;font-weight:800;margin:24px 0 12px;letter-spacing:-.1px}.info-grid{display:flex;flex-wrap:wrap;gap:10px}.info-card{flex:1;min-width:45%;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:11px 14px}.info-card-full{min-width:95%}.info-label{display:block;font-size:11px;color:var(--text-muted);margin-bottom:3px;font-weight:600;text-transform:uppercase;letter-spacing:.4px}.info-value{display:block;font-size:13px;font-weight:700}.intra-link{display:block;text-align:center;margin-top:20px;padding:12px;border:1px solid;border-radius:var(--radius-sm);font-size:13px;font-weight:700;text-decoration:none;transition:transform .15s ease}.intra-link:hover{transform:translateY(-1px)}.login-gate{display:flex;flex-direction:column;align-items:center;text-align:center;padding-top:100px;gap:12px}.login-gate .header{margin-bottom:4px}.login-btn{display:inline-block;background:var(--primary-gradient);color:#fff;font-weight:700;text-decoration:none;padding:13px 30px;border-radius:var(--radius-md);margin-top:10px;box-shadow:var(--shadow-sm);transition:transform .15s ease,box-shadow .15s ease}.login-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}.account-menu{position:relative;flex-shrink:0}.account-avatar-btn{background:none;border:none;padding:0;cursor:pointer;border-radius:50%}.account-avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;border:2px solid var(--primary);display:block;transition:transform .15s ease}.account-avatar-btn:hover .account-avatar{transform:scale(1.05)}.account-avatar-fallback{display:flex;align-items:center;justify-content:center;background:var(--primary-gradient);color:#fff;font-weight:700;font-size:13px}.account-dropdown{position:absolute;top:52px;right:0;background:var(--surface-solid);border:1px solid var(--border-strong);border-radius:var(--radius-md);padding:10px;min-width:150px;z-index:20;box-shadow:var(--shadow-md)}.account-dropdown-name{font-size:12px;color:var(--text-muted);padding:4px 8px 8px;border-bottom:1px solid var(--border);margin-bottom:6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.account-logout-btn{width:100%;background:var(--surface-2);border:1px solid var(--border);color:var(--error);font-weight:700;font-size:13px;padding:9px;border-radius:var(--radius-sm);cursor:pointer;transition:border-color .15s ease}.account-logout-btn:hover{border-color:var(--error)}.footer{margin-top:56px;padding-top:20px;border-top:1px solid var(--border);text-align:center}.footer p{margin:2px 0}.footer-label{color:var(--text-muted);font-size:12px}.footer-name{color:var(--text-primary);font-size:14px;font-weight:700}.footer-meta{color:var(--text-secondary);font-size:13px}.footer-meta a{color:var(--primary-2);text-decoration:none}.footer-meta a:hover{text-decoration:underline}.scroll-top-btn,.music-toggle-btn{position:fixed;bottom:24px;width:48px;height:48px;border-radius:50%;border:1px solid var(--border-strong);background:var(--surface-solid);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);color:var(--text-primary);font-size:18px;line-height:1;cursor:pointer;box-shadow:var(--shadow-md);display:flex;align-items:center;justify-content:center;z-index:40;transition:transform .15s ease,border-color .15s ease}.scroll-top-btn{right:24px;background:var(--primary-gradient);border:none;color:#fff}.music-toggle-btn{right:82px;color:var(--primary-2)}.scroll-top-btn:hover,.music-toggle-btn:hover{transform:translateY(-2px);border-color:var(--primary)}.spinner{width:16px;height:16px;flex-shrink:0;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}.loading-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#06060c99;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;z-index:100;cursor:wait}.spinner-large{width:48px;height:48px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:480px){.app{padding:24px 14px 70px}.header h1{font-size:24px}.music-toggle-btn{right:24px;bottom:82px}}