:root{--color-primary: #2c6fad;--color-primary-dark: #1e4d7a;--color-accent: #5ba3d9;--color-green: #4CAF50;--color-green-dark: #388E3C;--color-orange: #FF7043;--color-orange-dark: #F4511E;--color-brown: #8B4513;--bg-base: #f0f0f0;--bg-elevated: #ffffff;--bg-overlay: rgba(0, 0, 0, .5);--text-default: #333333;--text-subtle: #666666;--text-muted: #999999;--border-light: #e0e0e0;--border-medium: #cccccc;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .08);--shadow-md: 0 4px 8px rgba(0, 0, 0, .12);--shadow-lg: 0 8px 16px rgba(0, 0, 0, .16);--star-color: #FFEB00}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Open Sans,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background-color:var(--bg-base);color:var(--text-default);line-height:1.6;min-height:100vh}.navbar{background-color:var(--color-primary);box-shadow:var(--shadow-md);position:sticky;top:0;z-index:100}.nav-container{max-width:1400px;margin:0 auto;padding:16px 24px;display:flex;justify-content:space-between;align-items:center}.nav-logo{display:flex;align-items:center;gap:12px}.logo-icon{height:45px;width:45px;-o-object-fit:contain;object-fit:contain}.logo-text{display:flex;gap:6px;font-size:24px;font-weight:700;line-height:1}.logo-judge{color:#fff}.logo-my{color:#5ba3d9}.logo-teacher{color:#fff}.nav-links{display:flex;gap:24px}.nav-link{color:#fff;text-decoration:none;font-weight:600;font-size:16px;padding:8px 16px;border-radius:4px;transition:background-color .2s ease}.nav-link:hover,.nav-link.active{background-color:var(--color-primary-dark)}.main-container{max-width:1400px;margin:0 auto;padding:32px 24px}.header-section{text-align:center;margin-bottom:48px}.page-title{font-size:42px;font-weight:700;color:var(--color-primary);margin-bottom:12px}.page-subtitle{font-size:18px;color:var(--text-subtle)}.content-single{max-width:900px;margin:0 auto}.controls-container{background:var(--bg-elevated);padding:20px;border-radius:8px;box-shadow:var(--shadow-sm);margin-bottom:24px;border:1px solid var(--border-light)}.search-input{width:100%;padding:12px 16px;border:2px solid var(--border-medium);border-radius:6px;font-size:16px;font-family:inherit;margin-bottom:12px;transition:border-color .2s ease}.search-input:focus{outline:none;border-color:var(--color-primary)}.filter-controls{display:grid;grid-template-columns:1fr 1fr;gap:12px}.filter-select{padding:10px 12px;border:2px solid var(--border-medium);border-radius:6px;font-size:14px;font-family:inherit;background-color:#fff;cursor:pointer;transition:border-color .2s ease}.filter-select:focus{outline:none;border-color:var(--color-primary)}.teacher-list{display:flex;flex-direction:column;gap:16px}.teacher-card{background:var(--bg-elevated);border-radius:8px;padding:20px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);cursor:pointer;transition:all .2s ease}.teacher-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.teacher-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.teacher-info h3{font-size:22px;font-weight:700;color:var(--text-default);margin-bottom:6px}.teacher-rating{display:flex;align-items:center;gap:8px;margin-bottom:4px}.rating-number{font-size:20px;font-weight:700;color:var(--color-orange)}.stars-display{display:flex;gap:2px}.school-name{font-size:14px;color:var(--text-subtle)}.subject-badge{background-color:var(--color-primary);color:#fff;padding:6px 12px;border-radius:4px;font-size:12px;font-weight:600}.teacher-bio{font-size:14px;color:var(--text-subtle);margin-bottom:12px;line-height:1.5}.teacher-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.teacher-tag{background-color:#e8f4f8;color:var(--color-primary);padding:4px 10px;border-radius:4px;font-size:12px;font-weight:600}.latest-review{background-color:#f9f9f9;padding:16px;border-radius:6px;border-left:4px solid var(--color-primary)}.latest-review p{font-size:14px;color:var(--text-default);font-style:italic;margin-bottom:4px;line-height:1.6}.review-author{font-size:12px;color:var(--text-muted);font-style:normal;font-weight:600}.review-count{font-size:14px;color:var(--text-subtle);margin-top:8px}.empty-state{text-align:center;padding:80px 40px;background:var(--bg-elevated);border-radius:12px;border:2px dashed var(--border-light);box-shadow:var(--shadow-sm)}.empty-icon{margin:0 auto 24px;opacity:.8}.empty-title{font-size:28px;font-weight:700;color:var(--text-default);margin-bottom:12px}.empty-text{font-size:16px;color:var(--text-subtle);margin-bottom:24px;max-width:500px;margin-left:auto;margin-right:auto;line-height:1.6}.action-buttons{display:grid;grid-template-columns:1fr 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var(--border-light)}.modal-teacher-name{font-size:32px;font-weight:700;color:var(--text-default);margin-bottom:8px}.modal-teacher-meta{display:flex;align-items:center;gap:16px;margin-bottom:16px}.modal-rating-breakdown{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:16px}.rating-item{text-align:center;padding:12px;background-color:#f9f9f9;border-radius:6px}.rating-item-label{font-size:12px;color:var(--text-subtle);margin-bottom:4px}.rating-item-value{font-size:24px;font-weight:700;color:var(--text-default)}.modal-section-title{font-size:20px;font-weight:700;color:var(--text-default);margin-bottom:16px}.reviews-list{display:flex;flex-direction:column;gap:16px;margin-bottom:32px}.review-item{background-color:#f9f9f9;padding:16px;border-radius:6px;border-left:3px solid 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.star{width:32px;height:32px}}