/* 极简设计风格 - 至元德语 */

/* 基础变量 */
:root {
    --primary: #1a1a2e;
    --secondary: #16213e;
    --accent: #f3a233;
    --accent-light: #f7c56a;
    --accent-red: #e63946;
    --gradient-primary: linear-gradient(135deg, #f3a233 0%, #e63946 100%);
    --gradient-soft: linear-gradient(135deg, #f7c56a 0%, #f48c8c 100%);
    --bg: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #0f0f23;
    --text: #2d3436;
    --text-light: #636e72;
    --text-muted: #b2bec3;
    --border: #dfe6e9;
    --shadow: 0 2px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 40px rgba(0,0,0,0.12);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.15);
    --radius: 16px;
    --radius-sm: 8px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    --success: #27ae60;
    --success-light: #2ecc71;
    --warning: #f39c12;
    --warning-light: #f5b041;
    --error: #e74c3c;
    --error-light: #ec7063;
    --info: #3498db;
    --info-light: #5dade2;

    --font-de: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

    --nav-height: 64px;

    --primary-blue: #1E4D8C;
    --secondary-blue: #3D7EB8;
    --dark-text: #1a1a2e;
    --light-text: #636e72;
    --border-color: #e0e0e0;
    --light-bg: #f8f9fa;
    --accent-yellow: #FFD700;
    --bg-gray: #f5f6f7;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 - 极简风格 */
.navbar {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    height: 64px;
    gap: 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background-image: url('../images/brand/nav-icon.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    border-radius: 12px;
    display: block;
    font-size: 0;
    color: transparent;
    flex-shrink: 0;
}

.navbar .logo-icon {
    box-shadow: 0 2px 8px rgba(230, 57, 70, 0.25);
}

.footer-brand .logo-icon {
    box-shadow: none;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
    display: block;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 24px;
    justify-content: center;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    font-size: 15px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
    display: inline-block;
}

.nav-links a:hover {
    color: var(--accent);
    background: rgba(230, 57, 70, 0.06);
    transform: translateY(-1px);
}

.nav-links a.active {
    color: var(--accent);
    background: rgba(230, 57, 70, 0.08);
    font-weight: 600;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.nav-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-shrink: 0;
}

.auth-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1100;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-overlay.active {
    display: block;
    opacity: 1;
}

/* ========== 导航下拉菜单 ========== */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    background: var(--bg-secondary);
    color: var(--text);
    border: 1px solid var(--border);
}

.dropdown-toggle::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 4px;
    vertical-align: middle;
    border-top: 5px solid var(--text-light);
    border-right: 5px solid transparent;
    border-left: 5px solid transparent;
    transition: transform 0.2s ease;
}

.dropdown.active .dropdown-toggle::after {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 220px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    padding: 8px 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1100;
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.dropdown-item:hover {
    background: var(--bg-secondary);
    color: var(--accent);
}

.tool-icon {
    font-size: 16px;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

/* 按钮样式 - 极简 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(230, 57, 70, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(230, 57, 70, 0.4);
}

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

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(243, 162, 51, 0.06);
}

.btn-outline-light {
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline-light:hover {
    background: white;
    color: var(--primary);
    border-color: white;
}

.btn-large {
    padding: 16px 36px;
    font-size: 16px;
    border-radius: 12px;
}

.btn-block {
    width: 100%;
}

/* 英雄区域 - 极简深色 */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, #1a1a3e 100%);
    color: white;
    padding: 50px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(230, 57, 70, 0.15) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(255,255,255,0.1);
    border-radius: 50px;
    font-size: 13px;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.1;
    letter-spacing: -1px;
    color: #ffffff;
    white-space: nowrap;
}

.hero h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 12px;
    font-weight: 400;
}

.hero-description {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 28px;
    color: rgba(255,255,255,0.6);
    max-width: 480px;
}

.hero-buttons {
    display: flex;
    gap: 12px;
}

.hero-stats {
    display: flex;
    gap: 0;
    padding: 16px 20px;
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    width: 100%;
    max-width: 360px;
    justify-content: space-around;
    box-sizing: border-box;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-number {
    font-size: 22px;
    font-weight: 800;
    color: white;
    display: block;
}

.stat-label {
    font-size: 12px;
    color: rgba(255,255,255,0.6);
    margin-top: 2px;
}

.hero-image {
    flex: 0 0 420px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 24px;
    position: relative;
}

.hero-card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 24px;
    padding: 28px;
    width: 100%;
    max-width: 360px;
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
}

.card-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.card-info h4 {
    font-size: 15px;
    font-weight: 600;
}

.card-info p {
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    margin-top: 2px;
}

.card-progress {
    margin-bottom: 16px;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 12px;
}

.progress-bar {
    height: 5px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 75%;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    border-radius: 3px;
    animation: progressGrow 2s ease-out;
}

@keyframes progressGrow {
    from { width: 0; }
    to { width: 75%; }
}

.card-lessons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    font-size: 12px;
}

.lesson-item.playing {
    background: rgba(230, 57, 70, 0.15);
    border: 1px solid rgba(230, 57, 70, 0.3);
}

.lesson-icon {
    width: 28px;
    height: 28px;
    background: rgba(255,255,255,0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
}

.lesson-item.playing .lesson-icon {
    background: var(--accent);
}

/* 章节标题 - 极简 */
.section-header {
    text-align: center;
    margin-bottom: 32px;
}

/* 标签作为标题左侧内联装饰元素 */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 14px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    vertical-align: middle;
    position: relative;
    top: -2px;
    margin-right: 12px;
}

/* 将 label 放入标题行的内联布局 */
.section-header .section-title-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0;
    margin-bottom: 10px;
}

.section-title {
    font-size: 38px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -1px;
    display: inline;
    margin: 0;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-light);
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.5;
}

/* 课程级别 - 极简卡片 */
.levels {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.level-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.level-card {
    background: white;
    border-radius: var(--radius);
    padding: 40px 32px;
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.level-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    transition: var(--transition);
}

.level-card.a1::before { background: linear-gradient(90deg, #3498db, #5dade2); }
.level-card.a2::before { background: linear-gradient(90deg, #9b59b6, #bb8fce); }
.level-card.b1::before { background: linear-gradient(90deg, var(--accent), var(--accent-light)); }

.level-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.level-card:hover::before {
    height: 6px;
}

.level-badge {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    color: white;
    margin-bottom: 24px;
}

.level-card.a1 .level-badge { background: linear-gradient(135deg, #3498db, #5dade2); }
.level-card.a2 .level-badge { background: linear-gradient(135deg, #9b59b6, #bb8fce); }
.level-card.b1 .level-badge { background: linear-gradient(135deg, var(--accent), var(--accent-light)); }

.level-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--primary);
    font-weight: 700;
}

.level-card > p {
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.7;
    font-size: 15px;
}

.level-features {
    list-style: none;
    margin-bottom: 32px;
}

.level-features li {
    padding: 10px 0;
    color: var(--text);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border);
}

.level-features li:last-child {
    border-bottom: none;
}

.level-features li::before {
    content: '✓';
    width: 20px;
    height: 20px;
    background: rgba(52, 211, 153, 0.1);
    color: #10b981;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

.level-card .btn {
    width: 100%;
}

/* 特色功能 - 极简 */
.features {
    padding: 50px 0 40px;
    background: #ffffff;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-item {
    padding: 22px 18px;
    border-radius: var(--radius);
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-item:hover {
    background: var(--bg-secondary);
    border-color: var(--border);
    transform: translateY(-4px);
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.feature-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 0;
    color: white;
}

.feature-item:nth-child(2) .feature-icon {
    background: linear-gradient(135deg, #3498db, #5dade2);
}

.feature-item:nth-child(3) .feature-icon {
    background: linear-gradient(135deg, #9b59b6, #bb8fce);
}

.feature-item:nth-child(4) .feature-icon {
    background: linear-gradient(135deg, #f39c12, #f5b041);
}

.feature-item:nth-child(5) .feature-icon {
    background: linear-gradient(135deg, #1abc9c, #48c9b0);
}

.feature-item:nth-child(6) .feature-icon {
    background: linear-gradient(135deg, #e74c3c, #ec7063);
}

.feature-item h3 {
    font-size: 17px;
    margin-bottom: 0;
    color: var(--primary);
    font-weight: 700;
}

.feature-item p {
    color: var(--text-light);
    line-height: 1.5;
    font-size: 14px;
}

/* 最新视频 - 极简 */
.latest-videos {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.latest-videos .container {
    position: relative;
}

.view-all {
    position: absolute;
    top: 10px;
    right: 24px;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 4px;
}

.view-all:hover {
    gap: 8px;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.video-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border);
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.video-thumbnail {
    height: 170px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.video-thumbnail::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.4), transparent);
}

.play-button {
    width: 56px;
    height: 56px;
    background: rgba(255,255,255,0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 20px;
    padding-left: 4px;
    transition: var(--transition);
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

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

.video-duration {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    z-index: 1;
}

.video-info {
    padding: 24px;
}

.video-info h4 {
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--primary);
    font-weight: 600;
    line-height: 1.4;
}

.video-meta {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    gap: 12px;
}

/* CTA区域 - 腰封 */
.cta-section {
    padding: 48px 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    position: relative;
    overflow: hidden;
    text-align: center;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(230, 57, 70, 0.2) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 32px;
    font-weight: 800;
    color: white;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

.cta-content p {
    font-size: 16px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
    line-height: 1.6;
}

/* 品牌展示 */
.brand-showcase {
    padding: 20px 0 18px;
    text-align: center;
    background: #f8f9fa;
}

.brand-showcase .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.brand-horizontal-logo {
    max-width: 280px;
    width: 60%;
    height: auto;
    animation: breathe 5s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
        filter: drop-shadow(0 0 12px rgba(243, 162, 51, 0.25));
    }
    50% {
        opacity: 0.93;
        transform: scale(1.015);
        filter: drop-shadow(0 0 22px rgba(230, 57, 70, 0.35));
    }
}

.brand-slogan {
    font-size: 18px;
    color: var(--text-secondary);
    font-weight: 500;
}

.brand-intro {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    max-width: 640px;
    margin: 0;
}

@media (max-width: 768px) {
    .brand-showcase {
        padding: 16px 0 14px;
    }
    .brand-horizontal-logo {
        max-width: 220px;
    }
    .brand-slogan {
        font-size: 16px;
    }
    .brand-intro {
        font-size: 14px;
        padding: 0 20px;
    }
}

/* 页脚 - 极简 */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer .container {
    position: relative;
    z-index: 1;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo-icon {
    width: 40px;
    height: 40px;
    background-image: url('../images/brand/nav-icon.png');
    background-size: contain;
    background-repeat: no-repeat;
    border-radius: 8px;
    flex-shrink: 0;
}

.footer-brand .logo-text {
    font-size: 20px;
    font-weight: 700;
    color: white;
    letter-spacing: -0.5px;
    display: block;
}

/* 品牌标题 */
.brand-title {
    font-size: 16px;
    margin-bottom: 8px;
    padding-left: 16px;
    color: white;
    font-weight: 600;
}

/* 品牌层级布局 */
.brand-hierarchy {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.brand-main {
    line-height: 0;
}

.brand-main-logo {
    width: 200px;
    height: auto;
    display: block;
}

.brand-sub {
    padding-left: 28px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-mp-qr {
    width: 61px;
    height: auto;
    display: block;
    border-radius: 4px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
    cursor: pointer;
}

/* 悬停或点击时二维码放大100% */
.brand-sub:hover .brand-mp-qr,
.brand-mp-qr:active {
    transform: scale(2);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    z-index: 10;
    position: relative;
}

.brand-mp-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 500;
}

.brand-site-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.brand-site-link .logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.brand-site-link .logo-text {
    font-size: 16px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: -0.3px;
}

.footer-brand p {
    color: rgba(255,255,255,0.5);
    line-height: 1.8;
    font-size: 15px;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 24px;
    color: white;
    font-weight: 600;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section a {
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 15px;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--accent);
}

/* 联系方式区域 */
.footer-contact h4 {
    font-size: 16px;
    margin-bottom: 24px;
    color: white;
    font-weight: 600;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    flex-wrap: nowrap;
    white-space: nowrap;
}

.contact-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.contact-icon.wechat-icon {
    display: inline-block;
    width: 20px;
    height: 20px;
    background: #07c160;
    border-radius: 4px;
    position: relative;
}

.contact-icon.wechat-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M8.5 11.5a1.5 1.5 0 1 0 0-3 1.5 1.5 0 0 0 0 3zm5 0a1.5 1.5 0 1 0 0-3 1.5 1.5 0 0 0 0 3zM5 15a1 1 0 1 0 0-2 1 1 0 0 0 0 2zm4.5 0a1 1 0 1 0 0-2 1 1 0 0 0 0 2zm5.5-3a1 1 0 1 0 0-2 1 1 0 0 0 0 2zm3 0a1 1 0 1 0 0-2 1 1 0 0 0 0 2zM9 8.5A6.5 6.5 0 0 0 2.5 15a6.5 6.5 0 0 0 6.5 6.5c1.2 0 2.3-.3 3.3-.9.6.4 1.3.6 2 .7.3 0 .5 0 .8-.1a4.5 4.5 0 0 0 3.9-4.4v-.3c.6-.9 1-2 1-3.2A6.5 6.5 0 0 0 11.5 8h-.8A6.5 6.5 0 0 0 9 8.5z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

.contact-label {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    flex-shrink: 0;
    white-space: nowrap;
}

.contact-value {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}

.qr-hint {
    display: inline-block;
    margin-left: 6px;
    padding: 1px 6px;
    font-size: 11px;
    color: #07c160;
    border: 1px solid rgba(7, 193, 96, 0.4);
    border-radius: 3px;
    background: rgba(7, 193, 96, 0.08);
    white-space: nowrap;
}

.contact-row a {
    text-decoration: none;
}

.contact-row a:hover {
    color: var(--accent);
}

/* 微信二维码悬停弹出 */
.wechat-row {
    position: relative;
}

.wechat-trigger {
    position: relative;
    cursor: pointer;
}

.wechat-trigger .qr-popup {
    position: absolute;
    bottom: calc(100% + 12px);
    left: 0;
    background: white;
    padding: 12px;
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.25);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    pointer-events: none;
}

.wechat-trigger:hover .qr-popup {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.wechat-trigger .qr-popup img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 4px;
    display: block;
}

.wechat-trigger .qr-popup .qr-tip {
    font-size: 12px;
    color: #666;
    text-align: center;
    margin-top: 8px;
    display: block;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: white;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent);
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255,255,255,0.4);
    font-size: 14px;
}

.footer-bottom .company-name {
    color: rgba(255,255,255,0.7);
    font-weight: 500;
    margin-bottom: 8px;
}

.footer-bottom .icp {
    margin-top: 8px;
}

.footer-bottom .icp a {
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    transition: var(--transition);
}

.footer-bottom .icp a:hover {
    color: var(--accent);
}

.footer-bottom .beian-row {
    margin-top: 6px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 12px;
}

.footer-bottom .beian-row a {
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
}

.footer-bottom .beian-row a:hover {
    color: var(--accent);
}

.footer-bottom .beian-icon {
    width: 14px;
    height: 14px;
    margin-right: 3px;
    flex-shrink: 0;
    display: block;
}

.footer-bottom .beian-divider {
    color: rgba(255,255,255,0.2);
}

.footer-bottom .copyright-line {
    margin-top: 6px;
    font-size: 12px;
    color: rgba(255,255,255,0.35);
}

.footer-bottom .copyright-line a {
    color: var(--accent);
    text-decoration: none;
}

/* 小屏幕联系方式紧凑布局 */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-section {
        margin-bottom: 0;
    }

    .footer-contact {
        padding-left: 0;
        border-left: none;
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 20px;
        margin-top: 0;
    }

    .footer-contact .contact-list p {
        font-size: 13px;
    }

    .footer-contact .qr-popup {
        bottom: auto;
        top: calc(100% + 12px);
    }

    .footer-contact .qr-popup::after {
        top: auto;
        bottom: 100%;
        border-top-color: transparent;
        border-bottom-color: white;
    }
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(230, 57, 70, 0.15) 0%, transparent 70%);
}

.page-header h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
    letter-spacing: -1px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.7;
    position: relative;
    z-index: 1;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 42px;
    }
    
    .level-cards,
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-contact {
        grid-column: 1 / -1;
        padding-left: 0;
        border-left: none;
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 24px;
        margin-top: 8px;
    }
}

/* 中等屏幕：4列变2列 */
@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .footer-brand {
        grid-column: 1 / -1;
        margin-bottom: 16px;
    }

    .footer-contact {
        grid-column: 1 / -1;
        padding-left: 0;
        border-left: none;
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 24px;
        margin-top: 16px;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        grid-template-columns: 1fr auto;
        height: auto;
        padding: 15px 20px;
        gap: 20px;
    }

    .mobile-menu-toggle {
        display: flex;
        order: 2;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        padding: 80px 20px 20px;
        gap: 0;
        transition: left 0.3s ease;
        box-shadow: 2px 0 20px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        overflow-y: auto;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links a {
        display: block;
        padding: 15px 20px;
        border-radius: 0;
        border-bottom: 1px solid var(--border);
    }
    
    .nav-links a:hover {
        transform: none;
        background: var(--bg-secondary);
    }
    
    .nav-links a.active::after {
        display: none;
    }
    
    .nav-actions {
        position: fixed;
        bottom: 0;
        left: -100%;
        width: 280px;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 10px;
        transition: left 0.3s ease;
        border-top: 1px solid var(--border);
        z-index: 1000;
    }
    
    .nav-actions.active {
        left: 0;
    }
    
    .nav-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 0;
        margin-top: 10px;
        background: var(--bg-secondary);
        border-radius: var(--radius-sm);
        display: none;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .dropdown-item {
        padding: 12px 16px;
        border-bottom: 1px solid var(--border);
    }
    
    .dropdown-item:last-child {
        border-bottom: none;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 32px;
        white-space: normal;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-image {
        margin-top: 50px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .level-cards,
    .feature-grid,
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .cta-content h2 {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 28px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .nav-links {
        width: 100%;
    }
    
    .nav-actions {
        width: 100%;
    }
}


/* ===== ������ʽ ===== */

/* �¹��ſ����� */
.germany-info {
    padding: 50px 0 40px;
    background: #f8f9fa;
}

.info-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.info-card {
    background: white;
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.info-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
}

.info-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 20px;
}

.info-card:nth-child(2) .info-icon {
    background: linear-gradient(135deg, #3498db, #5dade2);
}

.info-card:nth-child(3) .info-icon {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
}

.info-card:nth-child(4) .info-icon {
    background: linear-gradient(135deg, #f39c12, #f5b041);
}

.info-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--primary);
}

.info-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 16px;
}

.link-arrow {
    color: var(--accent);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

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

/* ������ */
.hidden {
    display: none !important;
}

/* ========== 动画系统 ========== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.animate-fade-in { animation: fadeIn 0.5s ease both; }
.animate-fade-in-up { animation: fadeInUp 0.5s ease both; }
.animate-fade-in-down { animation: fadeInDown 0.5s ease both; }
.animate-slide-in { animation: slideInRight 0.5s ease both; }
.animate-scale-in { animation: scaleIn 0.4s ease both; }

/* 延迟动画 */
.anim-delay-1 { animation-delay: 0.1s; }
.anim-delay-2 { animation-delay: 0.2s; }
.anim-delay-3 { animation-delay: 0.3s; }
.anim-delay-4 { animation-delay: 0.4s; }
.anim-delay-5 { animation-delay: 0.5s; }

/* 交错动画容器 */
.stagger-children > * {
    opacity: 0;
    animation: fadeInUp 0.5s ease forwards;
}
.stagger-children > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.2s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.25s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.3s; }
.stagger-children > *:nth-child(7) { animation-delay: 0.35s; }
.stagger-children > *:nth-child(8) { animation-delay: 0.4s; }

/* ========== 扩展按钮系统 ========== */
.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
    color: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: white;
    color: var(--text-light);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
}

.btn-icon:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(230, 57, 70, 0.04);
}

/* ========== 返回顶部按钮 ========== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #f3a233 0%, #e63946 100%);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(230, 57, 70, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(230, 57, 70, 0.5);
    background: linear-gradient(135deg, #e63946 0%, #f3a233 100%);
}

/* ========== 阅读进度条 ========== */
.reading-progress {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    z-index: 1001;
    transition: width 0.1s linear;
}

/* ========== 段落高亮 ========== */
.paragraph-highlight {
    background: rgba(230, 57, 70, 0.05);
    border-left: 3px solid var(--accent);
    padding-left: 16px;
    margin-left: -19px;
    transition: var(--transition);
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.breadcrumb .container {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.breadcrumb a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb .separator {
    color: var(--text-muted);
}

.breadcrumb .current {
    color: var(--text);
    font-weight: 500;
}

/* ========== 页面加载遮罩 ========== */
.page-loader {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========== 学习路径引导 ========== */
.learning-path {
    padding: 80px 0;
    background: white;
}

.path-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-top: 48px;
    flex-wrap: wrap;
}

.path-step {
    text-align: center;
    padding: 24px 20px;
    min-width: 140px;
    position: relative;
}

.path-step:not(:last-child)::after {
    content: '→';
    position: absolute;
    right: -12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 24px;
    color: var(--text-muted);
    font-weight: 300;
}

.path-badge {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    color: white;
    margin-bottom: 12px;
}

/* 等级徽章配色已迁移至 ui-redesign.css，统一白色文字 */

.path-step h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.path-step p {
    font-size: 12px;
    color: var(--text-light);
}

/* ========== 二级导航高亮修复 ========== */
.navbar {
    height: 64px;
}

.navbar.scrolled {
    box-shadow: var(--shadow);
    height: 64px;
}

/* ========== 卡片 hover 浮起效果统一 ========== */
.card-hover {
    transition: var(--transition);
}

.card-hover:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

/* ��Ӧʽ */
@media (max-width: 1024px) {
    .info-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .info-cards {
        grid-template-columns: 1fr;
    }
}

/* AI 问答落地页专用样式 */
.ai-page-main {
    padding: 100px 0 60px;
    background: var(--bg-light, #f8f9fa);
    min-height: 70vh;
}

.ai-page-main .breadcrumb {
    margin-bottom: 24px;
    font-size: 0.9rem;
    color: var(--text-light, #6b7280);
}

.ai-page-main .breadcrumb a {
    color: var(--primary, #e85d4e);
    text-decoration: none;
}

.ai-page-main .breadcrumb a:hover {
    text-decoration: underline;
}

.ai-content {
    background: #fff;
    border-radius: 16px;
    padding: 48px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.ai-header {
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid #eee;
}

.ai-header h1 {
    font-size: 2.2rem;
    color: var(--text-dark, #1f2937);
    margin-bottom: 16px;
    line-height: 1.3;
}

.ai-lead {
    font-size: 1.15rem;
    color: var(--text-light, #4b5563);
    line-height: 1.7;
}

.ai-section {
    margin-bottom: 36px;
}

.ai-section h2 {
    font-size: 1.4rem;
    color: var(--text-dark, #1f2937);
    margin-bottom: 16px;
}

.ai-section p,
.ai-section li {
    color: var(--text-light, #4b5563);
    line-height: 1.8;
    margin-bottom: 12px;
}

.ai-section ul,
.ai-section ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.ai-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.ai-card {
    background: var(--bg-light, #f8f9fa);
    border-radius: 12px;
    padding: 24px;
    border-left: 4px solid var(--primary, #e85d4e);
}

.ai-card h3 {
    font-size: 1.1rem;
    color: var(--text-dark, #1f2937);
    margin-bottom: 10px;
}

.ai-card p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

.ai-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.ai-table th,
.ai-table td {
    padding: 14px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.ai-table th {
    background: var(--bg-light, #f8f9fa);
    font-weight: 600;
    color: var(--text-dark, #1f2937);
}

.ai-cta {
    background: linear-gradient(135deg, #fff5f3 0%, #fff 100%);
    border: 1px solid #ffe8e5;
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    margin-top: 48px;
}

.ai-cta h2 {
    font-size: 1.5rem;
    color: var(--text-dark, #1f2937);
    margin-bottom: 12px;
}

.ai-cta p {
    color: var(--text-light, #4b5563);
    margin-bottom: 24px;
}

@media (max-width: 768px) {
    .ai-page-main {
        padding: 90px 0 40px;
    }

    .ai-content {
        padding: 28px;
    }

    .ai-header h1 {
        font-size: 1.7rem;
    }

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

    .ai-cta {
        padding: 28px;
    }
}