/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 */
    --primary-color: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;

    /* 辅助色 */
    --secondary-color: #22d3ee;
    --accent-color: #f43f5e;
    --success-color: #10b981;
    --warning-color: #f59e0b;

    /* 中性色 */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* 字体 */
    --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'Fira Code', 'Consolas', monospace;

    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* 边框圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* 动画 */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-icon {
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--gray-700);
    transition: all var(--transition-normal);
}

/* 主页英雄区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 70px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--secondary-color) 100%);
    opacity: 0.1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--primary-color)20 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 1;
    position: relative;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* 视频展示区域 */
.video-section {
    padding: var(--spacing-2xl) 0;
    background: white;
}

.video-content {
    text-align: center;
}

.video-content h2 {
    font-size: 2.5rem;
    color: var(--gray-800);
    margin-bottom: var(--spacing-sm);
}

.video-content p {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.video-container {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--gray-900);
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.video-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.video-wrapper:hover .video-overlay {
    background: rgba(0, 0, 0, 0.3);
}

.play-button {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.video-wrapper:hover .play-button {
    transform: scale(1.1);
    background: white;
}

.video-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.video-overlay p {
    color: white;
    font-size: 1.1rem;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.video-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.feature-text h4 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
}

.feature-text p {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

/* 快速导航 */
.quick-nav {
    padding: var(--spacing-2xl) 0;
    background: white;
}

.quick-nav h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    color: var(--gray-800);
}

.quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.quick-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.quick-nav-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.quick-nav-item .model-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.quick-nav-item h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--gray-800);
}

.quick-nav-item p {
    color: var(--gray-600);
    text-align: center;
}

/* 分类区域 */
.categories {
    padding: var(--spacing-2xl) 0;
    background: var(--gray-50);
}

.categories h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    color: var(--gray-800);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.category-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    text-align: center;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.category-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--gray-800);
}

.category-card p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
}

.model-count {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gray-100);
    color: var(--gray-600);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

/* 搜索和筛选 */
.search-section {
    padding: var(--spacing-xl) 0;
    background: white;
    position: sticky;
    top: 70px;
    z-index: 100;
    border-bottom: 1px solid var(--gray-200);
}

.search-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.search-box {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

#search-input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

#search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-btn {
    padding: 12px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 1.2rem;
}

.filter-tags {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.filter-tag {
    padding: 8px 16px;
    background: var(--gray-100);
    color: var(--gray-700);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-tag:hover {
    background: var(--gray-200);
}

.filter-tag.active {
    background: var(--primary-color);
    color: white;
}

/* 模型网格 */
.models-section {
    padding: var(--spacing-2xl) 0;
    background: var(--gray-50);
}

.models-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    color: var(--gray-800);
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.model-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.model-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.model-header {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.model-icon {
    font-size: 2.5rem;
}

.model-title h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.model-category {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.model-body {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    flex: 1;
}

.model-body h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--gray-800);
}

.model-body p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.model-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.difficulty {
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

.difficulty.初级 {
    background: #d1fae5;
    color: #065f46;
}

.difficulty.中级 {
    background: #fed7aa;
    color: #92400e;
}

.difficulty.高级 {
    background: #fecaca;
    color: #991b1b;
}

.time {
    color: var(--gray-600);
    font-size: 0.9rem;
}

.model-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
}

.tag {
    padding: 4px 8px;
    background: var(--gray-100);
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
}

.model-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
}

/* 使用指南 */
.guide-section {
    padding: var(--spacing-2xl) 0;
    background: white;
}

.guide-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    color: var(--gray-800);
}

.guide-content {
    max-width: 800px;
    margin: 0 auto;
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.step {
    text-align: center;
    padding: var(--spacing-lg);
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
}

.step h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--gray-800);
}

.step p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

.guide-cta {
    text-align: center;
}

/* 关于我们 */
.about-section {
    padding: var(--spacing-2xl) 0;
    background: var(--gray-50);
}

.about-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    color: var(--gray-800);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xl);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gray-700);
}

.feature-icon {
    font-size: 1.2rem;
}

/* 页脚 */
footer {
    background: var(--gray-900);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--gray-400);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .guide-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--gray-200);
    }

    .nav-menu.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero-stats {
        gap: var(--spacing-lg);
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .models-grid {
        grid-template-columns: 1fr;
    }

    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .guide-steps {
        grid-template-columns: 1fr;
    }

    .features {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-xs);
    }

    .hero-title {
        font-size: 2rem;
    }

    .quick-nav-grid {
        grid-template-columns: 1fr;
    }

    .model-card {
        max-width: 100%;
    }
}

/* 动画类 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--gray-300);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: white;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color var(--transition-fast);
}

.modal-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.modal-body {
    padding: var(--spacing-lg);
}

/* 推荐表单样式 */
.recommend-form label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--gray-800);
}

.recommend-form textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: border-color var(--transition-fast);
    margin-bottom: var(--spacing-lg);
}

.recommend-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.quick-questions {
    margin-bottom: var(--spacing-lg);
}

.quick-questions h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--gray-800);
    font-size: 1.1rem;
}

.question-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-sm);
}

.quick-question {
    padding: var(--spacing-sm);
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
    text-align: center;
}

.quick-question:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.quick-question:active {
    transform: translateY(0);
}

#analyze-btn {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1.1rem;
}

/* 推荐结果样式 */
.recommend-results {
    animation: fadeIn 0.5s ease-out;
}

.recommended-models {
    margin-bottom: var(--spacing-lg);
}

.recommended-model {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--primary-color);
    transition: all var(--transition-normal);
}

.recommended-model:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.recommended-model-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.recommended-model-icon {
    font-size: 2rem;
}

.recommended-model-title {
    flex: 1;
}

.recommended-model-title h4 {
    margin: 0 0 4px 0;
    color: var(--gray-800);
    font-size: 1.2rem;
}

.recommended-model-category {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.recommended-model-description {
    color: var(--gray-700);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.recommended-model-match {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    margin-bottom: var(--spacing-sm);
}

.recommended-model-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.recommended-model-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.recommended-model-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.recommended-model-link:hover {
    color: var(--primary-dark);
}

#restart-btn {
    width: 100%;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 90vh;
        margin: var(--spacing-sm);
    }

    .question-buttons {
        grid-template-columns: repeat(2, 1fr);
    }

    .modal-header {
        padding: var(--spacing-md);
    }

    .modal-header h2 {
        font-size: 1.3rem;
    }

    .modal-body {
        padding: var(--spacing-md);
    }
}