:root{--primary: #006B3F;--primary-dark: #004d2e;--primary-light: #e6f4ee;--secondary: #c8a951;--danger: #c0392b;--danger-light: #fde8e6;--success: #27ae60;--success-light: #e8f8ee;--text: #1a1a1a;--text-muted: #666;--bg: #f8f9fa;--surface: #ffffff;--border: #e0e0e0;--shadow: 0 2px 12px rgba(0,0,0,.08);--shadow-lg: 0 8px 32px rgba(0,0,0,.12);--radius: 12px;--radius-sm: 8px;--radius-lg: 20px;--font-ar: "Noto Sans Arabic", "Segoe UI", system-ui, sans-serif;--font-zh: "Noto Sans SC", "PingFang SC", system-ui, sans-serif;--font-en: "Inter", system-ui, sans-serif;--transition: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-en);color:var(--text);background:var(--bg);line-height:1.6;min-height:100vh}[lang=ar] body,[dir=rtl]{font-family:var(--font-ar)}[lang=zh] body{font-family:var(--font-zh)}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;border:none;background:none;font-family:inherit;font-size:inherit}img{max-width:100%;height:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 22px;border-radius:var(--radius-sm);font-size:.95rem;font-weight:600;transition:background var(--transition),transform var(--transition),box-shadow var(--transition);border:2px solid transparent;text-decoration:none!important;white-space:nowrap}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark)}.btn-secondary{background:var(--secondary);color:#fff;border-color:var(--secondary)}.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}.btn-outline:hover{background:var(--primary-light)}.btn-ghost{background:transparent;color:var(--text-muted);border-color:transparent}.btn-ghost:hover{color:var(--primary);background:var(--primary-light)}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn-danger:hover{background:#a93226}.btn-lg{padding:14px 30px;font-size:1.05rem;border-radius:var(--radius)}.navbar{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:0 2px 8px #0000000f;flex-wrap:wrap}.navbar-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem;color:var(--primary);text-decoration:none!important}.navbar-brand a{display:flex;align-items:center;gap:10px;color:var(--primary);text-decoration:none!important}.brand-icon{font-size:1.5rem}.brand-name{color:var(--primary)}.navbar-links{display:flex;align-items:center;gap:4px}.navbar-links a{padding:6px 14px;border-radius:var(--radius-sm);color:var(--text);font-weight:500;transition:background var(--transition),color var(--transition)}.navbar-links a:hover{background:var(--primary-light);color:var(--primary);text-decoration:none}.lang-dropdown-wrap{position:relative}.lang-toggle{display:flex;align-items:center;gap:6px;padding:6px 14px;border-radius:20px;font-size:.88rem;font-weight:600;color:var(--text-muted);border:1.5px solid var(--border);background:var(--surface);transition:all var(--transition);cursor:pointer;white-space:nowrap}.lang-toggle:hover{border-color:var(--primary);color:var(--primary)}.lang-arrow{font-size:.65rem;opacity:.6}.lang-dropdown{position:absolute;top:calc(100% + 6px);inset-inline-end:0;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);min-width:110px;overflow:hidden;z-index:200}.lang-option{display:block;width:100%;padding:10px 16px;text-align:start;font-size:.9rem;font-weight:500;color:var(--text);background:none;border:none;cursor:pointer;transition:background var(--transition)}.lang-option:hover{background:var(--primary-light);color:var(--primary)}.lang-option.active{color:var(--primary);font-weight:700;background:var(--primary-light)}.page{min-height:100vh;display:flex;flex-direction:column}.page-header{text-align:center;padding:40px 24px 24px}.page-header h1{font-size:2rem;font-weight:700;color:var(--primary);margin-bottom:8px}.page-header p{font-size:1.1rem;color:var(--text-muted)}.hero{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 60%,#003d22 100%);color:#fff;padding:80px 24px;display:flex;align-items:center;justify-content:center;gap:60px;min-height:520px;text-align:center}.hero-content{max-width:640px}.hero-badge{display:inline-block;background:#ffffff26;border:1px solid rgba(255,255,255,.3);border-radius:20px;padding:6px 16px;font-size:.9rem;margin-bottom:20px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.hero h1{font-size:2.8rem;font-weight:700;line-height:1.2;margin-bottom:16px;text-shadow:0 2px 12px rgba(0,0,0,.2)}.hero-subtitle{font-size:1.15rem;opacity:.9;margin-bottom:36px;line-height:1.6}.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.hero-cta .btn-primary{background:#fff;color:var(--primary);border-color:#fff}.hero-cta .btn-primary:hover{background:var(--primary-light)}.hero-cta .btn-secondary{background:#ffffff26;color:#fff;border-color:#fff6}.hero-cta .btn-outline{color:#ffffffe6;border-color:#fff6;background:transparent}.hero-illustration{flex-shrink:0}.road-graphic{width:200px;height:200px;background:#ffffff14;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:5rem;border:2px solid rgba(255,255,255,.15);animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}.stats-bar{display:flex;justify-content:center;gap:0;background:var(--surface);border-bottom:1px solid var(--border);flex-wrap:wrap}.stat-item{flex:1;min-width:140px;padding:24px 16px;text-align:center;border-right:1px solid var(--border)}.stat-item:last-child{border-right:none}[dir=rtl] .stat-item{border-right:none;border-left:1px solid var(--border)}[dir=rtl] .stat-item:last-child{border-left:none}.stat-value{display:block;font-size:1.8rem;font-weight:700;color:var(--primary)}.stat-label{font-size:.85rem;color:var(--text-muted)}.features{padding:60px 24px;max-width:1100px;margin:0 auto;width:100%}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}.feature-card{background:var(--surface);border-radius:var(--radius-lg);padding:36px 28px;box-shadow:var(--shadow);border:1px solid var(--border);display:flex;flex-direction:column;gap:14px;position:relative;overflow:hidden;transition:box-shadow var(--transition),transform var(--transition)}.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.feature-card.featured{border-color:var(--primary);border-width:2px}.feature-badge{position:absolute;top:16px;inset-inline-end:16px;background:var(--primary);color:#fff;font-size:.75rem;font-weight:700;padding:3px 10px;border-radius:10px}.feature-icon{font-size:2.5rem}.feature-card h2{font-size:1.25rem;font-weight:700;color:var(--text)}.feature-card p{color:var(--text-muted);flex:1}.footer{margin-top:auto;background:var(--primary-dark);color:#fffc;text-align:center;padding:28px 24px}.footer p{margin-bottom:4px}.footer-desc{font-size:.85rem;opacity:.7}.category-tabs{display:flex;gap:8px;padding:0 24px 20px;flex-wrap:wrap;justify-content:center}.tab-btn{padding:8px 20px;border-radius:20px;font-size:.9rem;font-weight:500;color:var(--text-muted);border:1.5px solid var(--border);background:var(--surface);transition:all var(--transition)}.tab-btn:hover{border-color:var(--primary);color:var(--primary)}.tab-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.practice-main{max-width:760px;margin:0 auto;width:100%;padding:0 16px 100px}.question-card{background:var(--surface);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow);border:1px solid var(--border);margin:0 auto}.question-counter{font-size:.85rem;color:var(--text-muted);font-weight:600;margin-bottom:16px}.question-text{font-size:1.2rem;font-weight:600;line-height:1.5;margin-bottom:24px;color:var(--text)}.options-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}.option-btn{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:var(--radius-sm);border:2px solid var(--border);background:var(--surface);text-align:start;transition:all var(--transition);width:100%;font-size:.98rem;color:var(--text)}.option-btn:hover:not(:disabled){border-color:var(--primary);background:var(--primary-light);color:var(--primary)}.option-btn.selected{border-color:var(--primary);background:var(--primary-light)}.option-btn.correct{border-color:var(--success);background:var(--success-light);color:var(--success)}.option-btn.wrong{border-color:var(--danger);background:var(--danger-light);color:var(--danger)}.option-letter{width:32px;height:32px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;flex-shrink:0}.option-btn.correct .option-letter{background:var(--success);color:#fff}.option-btn.wrong .option-letter{background:var(--danger);color:#fff}.option-text{flex:1}.feedback{padding:16px 20px;border-radius:var(--radius-sm);margin-bottom:20px;border-inline-start:4px solid transparent}.feedback-correct{background:var(--success-light);border-color:var(--success)}.feedback-wrong{background:var(--danger-light);border-color:var(--danger)}.feedback-title{font-weight:700;font-size:1rem;margin-bottom:8px}.feedback-correct .feedback-title{color:var(--success)}.feedback-wrong .feedback-title{color:var(--danger)}.explanation{font-size:.95rem;color:var(--text);line-height:1.6}.question-nav-sticky{position:fixed;bottom:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 24px;background:#fffffff2;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--border);box-shadow:0 -4px 20px #00000014}[dir=rtl] .question-nav-sticky{flex-direction:row-reverse}.exam-main{max-width:800px;margin:0 auto;width:100%;padding:32px 16px 60px}.exam-start-card{background:var(--surface);border-radius:var(--radius-lg);padding:48px 40px;text-align:center;box-shadow:var(--shadow-lg);border:1px solid var(--border)}.exam-icon{font-size:3.5rem;margin-bottom:16px}.exam-start-card h1{font-size:2rem;font-weight:700;color:var(--primary);margin-bottom:10px}.exam-start-card p{color:var(--text-muted);font-size:1.05rem;margin-bottom:32px}.exam-rules{display:flex;gap:24px;justify-content:center;margin-bottom:36px;flex-wrap:wrap}.rule-item{display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px 24px;background:var(--bg);border-radius:var(--radius);border:1px solid var(--border);min-width:110px}.rule-icon{font-size:1.8rem}.exam-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;padding:12px 16px;background:var(--surface);border-radius:var(--radius-sm);border:1px solid var(--border)}.exam-progress{font-weight:600;color:var(--text-muted)}.timer{font-size:1.1rem;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}.timer.urgent{color:var(--danger);animation:pulse 1s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}.exam-progress-bar{height:6px;background:var(--border);border-radius:3px;margin-bottom:20px;overflow:hidden}.exam-progress-fill{height:100%;background:var(--primary);border-radius:3px;transition:width .3s ease}.exam-question{margin-bottom:20px}.exam-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px;background:var(--surface);border-radius:var(--radius-sm);border:1px solid var(--border)}.exam-dots{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;max-width:400px}.dot{width:10px;height:10px;border-radius:50%;background:var(--border);border:none;padding:0;transition:all var(--transition);cursor:pointer}.dot.answered{background:var(--primary)}.dot.current{background:var(--secondary);transform:scale(1.4)}.result-card{background:var(--surface);border-radius:var(--radius-lg);padding:48px 40px;text-align:center;box-shadow:var(--shadow-lg);border:2px solid var(--border);margin-bottom:32px}.result-card.pass{border-color:var(--success);background:linear-gradient(135deg,#fff 60%,var(--success-light))}.result-card.fail{border-color:var(--danger);background:linear-gradient(135deg,#fff 60%,var(--danger-light))}.result-icon{font-size:4rem;margin-bottom:16px}.result-title{font-size:2.2rem;font-weight:700;margin-bottom:24px}.result-card.pass .result-title{color:var(--success)}.result-card.fail .result-title{color:var(--danger)}.result-score{display:flex;flex-direction:column;align-items:center;gap:4px;margin-bottom:16px}.score-label{font-size:.9rem;color:var(--text-muted);font-weight:600}.score-value{font-size:3rem;font-weight:700;color:var(--text)}.result-bar-wrap{height:12px;background:var(--border);border-radius:6px;margin:0 auto 12px;max-width:300px;overflow:hidden}.result-bar{height:100%;border-radius:6px;background:var(--primary);transition:width .6s ease}.result-card.pass .result-bar{background:var(--success)}.result-card.fail .result-bar{background:var(--danger)}.pass-threshold{font-size:.9rem;color:var(--text-muted);margin-bottom:28px}.result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.review-list{display:flex;flex-direction:column;gap:12px}.review-item{background:var(--surface);border-radius:var(--radius-sm);padding:16px 20px;display:flex;gap:16px;align-items:flex-start;border:2px solid var(--border)}.review-item.review-correct{border-color:var(--success)}.review-item.review-wrong{border-color:var(--danger)}.review-num{width:28px;height:28px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;flex-shrink:0}.review-body{flex:1}.review-question{font-size:.95rem;line-height:1.5;margin-bottom:6px}.review-explanation{font-size:.85rem;color:var(--text-muted)}.review-badge{font-size:1.3rem}.review-correct .review-badge{color:var(--success)}.review-wrong .review-badge{color:var(--danger)}.regulations-main{max-width:1100px;margin:0 auto;width:100%;padding:0 16px 60px}.regulations-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}.reg-card{background:var(--surface);border-radius:var(--radius);padding:24px;border:1px solid var(--border);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px;text-decoration:none!important;color:var(--text);transition:box-shadow var(--transition),transform var(--transition)}.reg-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:var(--primary)}.reg-card-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}.reg-category-badge{background:var(--primary-light);color:var(--primary);font-size:.78rem;font-weight:700;padding:3px 10px;border-radius:10px;border:1px solid rgba(0,107,63,.2)}.reg-date{font-size:.8rem;color:var(--text-muted)}.reg-title{font-size:1.05rem;font-weight:600;color:var(--text);line-height:1.4}.reg-summary{font-size:.9rem;color:var(--text-muted);line-height:1.5;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.reg-card-footer{display:flex;justify-content:flex-end}.read-more{color:var(--primary);font-size:1.2rem;font-weight:700}[dir=rtl] .read-more{transform:scaleX(-1);display:inline-block}.regulation-detail-main{max-width:820px;margin:0 auto;width:100%;padding:24px 16px 60px}.back-btn-wrap{margin-bottom:20px}.regulation-article{background:var(--surface);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow);border:1px solid var(--border)}.article-header{margin-bottom:28px;display:flex;flex-direction:column;gap:12px}.article-title{font-size:1.7rem;font-weight:700;color:var(--text);line-height:1.4}.article-date{font-size:.85rem;color:var(--text-muted)}.article-summary{font-size:1.05rem;color:var(--text-muted);border-inline-start:4px solid var(--primary);padding-inline-start:16px;margin-bottom:28px;line-height:1.7}.article-content{line-height:1.85;font-size:1rem}.article-content p{margin-bottom:16px}.loading{text-align:center;padding:60px 20px;color:var(--text-muted);font-size:1.1rem}.loading:before{content:"";display:block;width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 16px}@keyframes spin{to{transform:rotate(360deg)}}.error-msg{text-align:center;padding:40px 20px;color:var(--danger);background:var(--danger-light);border-radius:var(--radius);border:1px solid rgba(192,57,43,.2);margin:20px 0}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}[dir=rtl] .navbar,[dir=rtl] .navbar-links,[dir=rtl] .question-nav,[dir=rtl] .exam-nav{flex-direction:row-reverse}[dir=rtl] .feedback{border-inline-start:none;border-inline-end:4px solid transparent}[dir=rtl] .feedback-correct{border-inline-end-color:var(--success)}[dir=rtl] .feedback-wrong{border-inline-end-color:var(--danger)}[dir=rtl] .reg-card-footer{justify-content:flex-start}[dir=rtl] .review-item{flex-direction:row-reverse}[dir=rtl] .article-summary{border-inline-start:none;border-inline-end:4px solid var(--primary);padding-inline-start:0;padding-inline-end:16px}@media (max-width: 768px){.navbar{padding:10px 14px;gap:8px;flex-wrap:nowrap}.navbar-brand img{height:24px!important}.navbar-links{display:none}.brand-name{font-size:.95rem}.hero{flex-direction:column;gap:30px;padding:50px 20px;min-height:auto}.hero h1{font-size:1.8rem}.hero-subtitle{font-size:1rem}.hero-illustration{display:none}.hero-cta{flex-direction:column;align-items:stretch}.hero-cta .btn{text-align:center;justify-content:center}.stats-bar{gap:0}.stat-item{min-width:50%;flex:none}.stat-item:nth-child(2){border-right:none}[dir=rtl] .stat-item:nth-child(2){border-left:none}.features{padding:36px 16px}.features-grid{grid-template-columns:1fr}.question-card{padding:16px 14px}.question-counter{margin-bottom:10px}.question-text{font-size:1.05rem;margin-bottom:14px}.options-list{gap:8px;margin-bottom:12px}.option-btn{padding:10px 12px;font-size:.92rem}.option-letter{width:26px;height:26px;font-size:.82rem}.feedback{padding:10px 14px;margin-bottom:12px}.page-header{padding:16px 16px 10px}.page-header h1{font-size:1.3rem}.page-header p{font-size:.9rem}.exam-main{padding:16px 12px 60px}.exam-start-card{padding:24px 18px}.exam-icon{font-size:2.5rem;margin-bottom:10px}.exam-start-card h1{font-size:1.5rem;margin-bottom:8px}.exam-start-card p{margin-bottom:20px;font-size:.95rem}.exam-header{padding:8px 12px;margin-bottom:8px}.exam-progress-bar{margin-bottom:12px}.exam-nav{padding:10px 12px}.exam-rules{flex-direction:column;align-items:center;gap:10px;margin-bottom:20px}.rule-item{width:100%;max-width:220px;padding:12px 16px}.result-card{padding:32px 20px}.score-value{font-size:2.2rem}.regulations-grid{grid-template-columns:1fr}.regulation-article{padding:24px 18px}.exam-dots{max-width:240px}.dot{width:8px;height:8px}}@media (max-width: 480px){html{font-size:15px}.hero h1{font-size:1.5rem}.question-text{font-size:1rem}.category-tabs{padding:0 10px 10px;gap:6px}.tab-btn{padding:5px 12px;font-size:.8rem}.btn-lg{padding:12px 22px;font-size:1rem}.result-card{padding:20px 16px}.result-icon{font-size:2.5rem;margin-bottom:10px}.result-title{font-size:1.6rem;margin-bottom:16px}.score-value{font-size:2rem}}