/* ===================================
   PortraitQuest Homepage Styles
   Version: 1.0
   ================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #5B7FE8;
    --color-secondary: #FF7B54;
    --color-accent-1: #FFD93D;
    --color-accent-2: #A78BFA;
    
    --color-white: #FFFFFF;
    --color-off-white: #F8F9FA;
    --color-gray-100: #F8F9FA;
    --color-gray-200: #E9ECEF;
    --color-gray-300: #DEE2E6;
    --color-gray-400: #CED4DA;
    --color-gray-500: #ADB5BD;
    --color-gray-600: #6C757D;
    --color-gray-700: #495057;
    --color-gray-800: #343A40;
    --color-gray-900: #212529;
    
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 96px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --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);
    
    /* Transitions */
    --transition: 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ===================================
   Navigation Bar
   ================================ */
.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(--color-gray-200);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1600px; /* 与 hero-container 保持一致 */
    margin: 0 auto;
    padding: 16px 40px; /* 与 hero-container 保持一致 */
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    color: var(--color-gray-900);
    transition: var(--transition);
}

.nav-logo:hover {
    opacity: 0.8;
}

/* Logo Image Styles */
.logo-image {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.logo-icon {
    font-size: 32px;
}

.nav-links {
    display: flex;
    gap: 48px; /* 从32px增加到48px，增加间距 */
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    color: var(--color-gray-700);
    transition: var(--transition);
    white-space: nowrap; /* 防止换行 */
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* 确保语言选择器始终可见 */
.language-selector-dropdown {
    position: relative;
    display: block !important; /* 强制显示 */
}

.language-select {
    padding: 8px 32px 8px 12px;
    font-size: 14px;
    font-family: var(--font-family);
    color: var(--color-gray-800);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236C757D' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    min-width: 120px; /* 确保最小宽度 */
}

.language-select:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.language-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(91, 127, 232, 0.1);
}

.language-select option {
    padding: 8px;
    font-size: 14px;
}

.btn-primary-small {
    padding: 10px 24px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary-small:hover {
    background: #4C6FD8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--color-gray-800);
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 16px;
    padding: 24px;
    background: white;
    border-top: 1px solid var(--color-gray-200);
}

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

/* ===================================
   Hero Section
   ================================ */
.hero {
    min-height: auto; /* 改为自适应高度，不强制100vh */
    padding-top: 120px;
    padding-bottom: 80px; /* 从60px增加到80px，但移除min-height */
    background: linear-gradient(180deg, rgba(91, 127, 232, 0.05) 0%, rgba(255, 255, 255, 0) 100%);
    position: relative;
}

.hero-container {
    max-width: 1600px; /* 从 1200px 增加到 1600px，减少留白 */
    margin: 0 auto;
    padding: 0 40px; /* 从 24px 增加到 40px，更好的边距 */
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px; /* 左右内容之间的间距 */
    align-items: center;
}

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

.hero-title {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-gray-600);
    margin-bottom: 32px;
    line-height: 1.6;
}

.feature-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 32px;
}

.category-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: white;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.category-pill:hover {
    border-color: var(--color-primary);
    background: var(--color-off-white);
    transform: translateY(-2px);
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.btn-primary-large {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 36px;
    background: linear-gradient(135deg, var(--color-secondary), #FF6B43);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 18px;
    box-shadow: 0 4px 16px rgba(255, 123, 84, 0.3);
    transition: var(--transition);
}

.btn-primary-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 123, 84, 0.4);
}

.btn-secondary-large {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 36px;
    background: white;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 18px;
    transition: var(--transition);
}

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

.hero-proof {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    color: var(--color-gray-600);
    font-size: 14px;
}

.proof-divider {
    color: var(--color-gray-400);
}

.hero-visual {
    position: relative;
}

.hero-image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.hero-image-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.hero-image-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.hero-image-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

.placeholder-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, rgba(91, 127, 232, 0.1), rgba(167, 139, 250, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    color: rgba(91, 127, 232, 0.3);
}

.destination-badge {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    font-size: 12px;
    font-weight: 600;
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--color-gray-500);
    font-size: 14px;
}

.scroll-arrow {
    font-size: 24px;
    animation: bounce 2s infinite;
}

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

/* ===================================
   Social Proof Bar
   ================================ */
.social-proof {
    background: var(--color-off-white);
    padding: 48px 24px;
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

.proof-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    text-align: center;
}

.proof-stat {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.proof-number {
    font-size: 40px;
    font-weight: 800;
    color: var(--color-primary);
}

.proof-label {
    font-size: 14px;
    color: var(--color-gray-600);
    font-weight: 500;
}

/* ===================================
   Features Section
   ================================ */
.features {
    padding: 96px 24px;
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 20px;
    color: var(--color-gray-600);
    text-align: center;
    margin-bottom: 64px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-description {
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ===================================
   How It Works
   ================================ */
.how-it-works {
    padding: 96px 24px;
    background: var(--color-off-white);
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    padding: 32px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
}

.step-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.step-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.step-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-description {
    color: var(--color-gray-600);
}

.step-arrow {
    font-size: 32px;
    color: var(--color-primary);
    flex-shrink: 0;
}

/* ===================================
   Gallery Section
   ================================ */
.gallery {
    padding: 96px 24px;
}

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

.gallery-item {
    position: relative;
}

.gallery-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.gallery-image:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.gallery-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

.gallery-image .placeholder-image {
    height: 300px;
    font-size: 100px;
}

.destination-label {
    margin-top: 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-700);
}

/* ===================================
   Pricing Section
   ================================ */
.pricing {
    padding: 96px 24px;
    background: var(--color-off-white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto 32px;
}

.pricing-card {
    background: white;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: 32px;
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--color-primary);
    box-shadow: 0 8px 32px rgba(91, 127, 232, 0.2);
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--color-secondary), #FF6B43);
    color: white;
    padding: 6px 20px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.plan-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.plan-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.plan-price {
    margin-bottom: 16px;
}

.price-amount {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-gray-900);
}

.price-period {
    font-size: 18px;
    color: var(--color-gray-600);
}

.plan-credits {
    background: var(--color-off-white);
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

.credits-included {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 4px;
}

.credits-cost {
    font-size: 14px;
    color: var(--color-gray-600);
}

.plan-features {
    list-style: none;
    text-align: left;
    margin-bottom: 24px;
}

.plan-features li {
    padding: 8px 0;
    color: var(--color-gray-700);
    font-size: 14px;
}

.plan-features li.extra-cost {
    color: var(--color-gray-500);
    font-size: 12px;
    font-style: italic;
    margin-top: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--color-gray-200);
}

.btn-plan {
    display: block;
    width: 100%;
    padding: 14px 24px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition);
}

.btn-plan:hover {
    background: #4C6FD8;
    transform: translateY(-2px);
}

.btn-plan.featured {
    background: linear-gradient(135deg, var(--color-secondary), #FF6B43);
}

.plan-label {
    margin-top: 12px;
    font-size: 12px;
    color: var(--color-gray-600);
    font-weight: 600;
}

.pricing-note {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    background: linear-gradient(135deg, rgba(255, 217, 61, 0.1), rgba(255, 123, 84, 0.1));
    border-radius: var(--radius-md);
    text-align: center;
}

/* ===================================
   Download Section
   ================================ */
.download-section {
    padding: 96px 24px;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto 48px;
}

.platform-card {
    background: white;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.platform-card.available {
    border-color: var(--color-success);
}

.platform-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.platform-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.status-badge {
    display: inline-block;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 24px;
}

.status-badge.available {
    background: linear-gradient(135deg, var(--color-success), #34D399);
    color: white;
}

.status-badge.coming-soon {
    background: linear-gradient(135deg, var(--color-accent-1), #FFA500);
    color: var(--color-gray-800);
}

.btn-download {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--color-primary), #4C6FD8);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(91, 127, 232, 0.3);
}

.btn-notify {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    background: white;
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.platform-requirements {
    margin-top: 12px;
    font-size: 12px;
    color: var(--color-gray-500);
}

.qr-section {
    text-align: center;
    max-width: 300px;
    margin: 0 auto;
}

.qr-code {
    width: 200px;
    height: 200px;
    margin: 0 auto 16px;
    background: var(--color-gray-200);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-placeholder {
    color: var(--color-gray-500);
    font-weight: 600;
}

/* ===================================
   FAQ Section
   ================================ */
.faq {
    padding: 96px 24px;
    background: var(--color-off-white);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: white;
    border: none;
    text-align: left;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-gray-900);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--color-off-white);
}

.faq-icon {
    font-size: 24px;
    color: var(--color-primary);
    transition: var(--transition);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ===================================
   Final CTA Section
   ================================ */
.final-cta {
    padding: 120px 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-2));
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="rgba(255,255,255,0.05)"/></svg>');
    opacity: 0.1;
}

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

.cta-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    color: white;
}

.cta-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.btn-cta-primary {
    padding: 18px 48px;
    background: white;
    color: var(--color-primary);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 18px;
    transition: var(--transition);
}

.btn-cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.btn-cta-secondary {
    padding: 18px 48px;
    background: transparent;
    color: white;
    border: 2px solid white;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.cta-features {
    color: white;
    opacity: 0.9;
    font-size: 14px;
}

/* ===================================
   Footer
   ================================ */
.footer {
    background: var(--color-gray-900);
    color: white;
    padding: 64px 24px 32px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-tagline {
    color: var(--color-gray-400);
    margin-bottom: 24px;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    font-size: 24px;
    transition: var(--transition);
}

.social-links a:hover {
    transform: translateY(-2px);
    opacity: 0.8;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    color: white;
}

.footer-col a {
    display: block;
    color: var(--color-gray-400);
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: white;
    transform: translateX(4px);
}

.newsletter-form {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.newsletter-form input {
    flex: 1;
    padding: 10px 16px;
    border: 1px solid var(--color-gray-700);
    border-radius: var(--radius-md);
    background: var(--color-gray-800);
    color: white;
}

.newsletter-form button {
    padding: 10px 20px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.newsletter-form button:hover {
    background: #4C6FD8;
}

.footer-company {
    max-width: 1200px;
    margin: 48px auto 0;
    padding-top: 32px;
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.company-info h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: white;
}

.company-address {
    color: var(--color-gray-400);
    font-size: 14px;
    line-height: 1.8;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 32px;
    border-top: 1px solid var(--color-gray-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-gray-500);
    font-size: 14px;
}

/* ===================================
   Notification Modal
   ================================ */
.notify-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.notify-modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    padding: 48px;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 32px;
    color: var(--color-gray-500);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--color-gray-900);
}

.modal-content h3 {
    font-size: 28px;
    margin-bottom: 16px;
}

.modal-content p {
    color: var(--color-gray-600);
    margin-bottom: 24px;
}

#notifyForm {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

#notifyForm input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 16px;
}

#notifyForm .btn-submit {
    padding: 12px 32px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

#notifyForm .btn-submit:hover {
    background: #4C6FD8;
}

.privacy-note {
    font-size: 12px;
    color: var(--color-gray-500);
}

/* ===================================
   Responsive Design
   ================================ */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn-primary-large,
    .btn-secondary-large {
        width: 100%;
        justify-content: center;
    }
    
    .hero-image-grid {
        grid-template-columns: 1fr;
    }
    
    .proof-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-container {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .platform-grid {
        grid-template-columns: 1fr;
    }
    
    .qr-section {
        display: none;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    .cta-title {
        font-size: 32px;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn-cta-primary,
    .btn-cta-secondary {
        width: 100%;
    }
}

/* ===================================
   优雅艺术风格 - 色彩系统
   ================================ */
:root {
    /* 优雅艺术色系 */
    --elegant-purple: #9D7CBF;
    --elegant-gold: #D4A574;
    --elegant-blue: #7BA8D4;
    --elegant-pink: #E8B5C8;
    
    /* 渐变背景 */
    --gradient-elegant-1: linear-gradient(135deg, #E8D5F2 0%, #FFE8F0 100%);
    --gradient-elegant-2: linear-gradient(135deg, #FFE8D5 0%, #FFF5E8 100%);
    --gradient-elegant-3: linear-gradient(135deg, #D5E8FF 0%, #E8F4FF 100%);
    --gradient-elegant-4: linear-gradient(135deg, #F2E8D5 0%, #FFF9E8 100%);
}

/* ===================================
   优雅艺术风格 - 横向滑动卡片
   ================================ */

/* 轮播容器 */
.hero-carousel-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding: 20px 0;
}

/* 卡片轮播 - 中心聚焦效果 */
.hero-carousel {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    padding: 10px;
    -webkit-overflow-scrolling: touch;
    justify-content: flex-start; /* 居中对齐 */
    align-items: center;
}

/* 隐藏滚动条（保持功能） */
.hero-carousel::-webkit-scrollbar {
    display: none;
}

.hero-carousel {
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
}

/* 卡片样式 - 默认状态（两侧卡片）*/
.hero-card {
    flex: 0 0 280px;
    height: 380px;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    scroll-snap-align: start;
    cursor: pointer;
    /* 两侧卡片：缩小、半透明、微微模糊 */
    transform: scale(0.85);
    opacity: 0.5;
    filter: blur(3px);
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

/* 激活卡片（中心卡片）*/
.hero-card.active {
    /* 中心卡片：放大、完全不透明、清晰 */
    transform: scale(1.15);
    opacity: 1;
    filter: blur(0px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    z-index: 20;
}

/* 卡片图片容器 */
.card-image {
    width: 100%;
    height: 100%;
    background: var(--gradient-elegant-1);
    position: relative;
    overflow: hidden;
    border-radius: 20px; /* 容器圆角 */
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px !important; /* 强制圆角 */
    display: block; /* 移除图像底部空隙 */
}

/* 优雅的渐变文字叠加层 - 方案三 */
.card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    background: linear-gradient(
        to top, 
        rgba(0, 0, 0, 0.85) 0%, 
        rgba(0, 0, 0, 0.6) 50%,
        rgba(0, 0, 0, 0) 100%
    );
    transform: translateY(0);
    z-index: 2;
}

/* 卡片图标 - 隐藏 */
.card-icon {
    display: none;
}

/* 卡片标题 - 白色文字增强可读性 */
.card-title {
    font-size: 20px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 8px;
    line-height: 1.3;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

/* 卡片描述 - 始终显示，白色文字 */
.card-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
    opacity: 1;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}

/* 导航按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    color: var(--color-gray-700);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 100; /* 增加z-index确保在最上层 */
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto; /* 确保可以点击 */
}

.carousel-btn:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.carousel-btn:active {
    transform: translateY(-50%) scale(0.95);
}

.carousel-btn.prev {
    left: -10px;
}

.carousel-btn.next {
    right: -10px;
}

/* 指示器容器 */
.carousel-indicators {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
}

/* 指示器点 */
.indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-gray-300);
    transition: all 0.3s ease;
    cursor: pointer;
}

.indicator:hover {
    background: var(--color-gray-400);
}

.indicator.active {
    width: 24px;
    border-radius: 4px;
    background: var(--elegant-purple);
}

/* 为不同卡片应用不同的渐变背景 */
.hero-card:nth-child(1) .card-image {
    background: var(--gradient-elegant-1);
}

.hero-card:nth-child(2) .card-image {
    background: var(--gradient-elegant-2);
}

.hero-card:nth-child(3) .card-image {
    background: var(--gradient-elegant-3);
}

.hero-card:nth-child(4) .card-image {
    background: var(--gradient-elegant-4);
}

/* ===================================
   响应式设计 - 横向滑动卡片
   ================================ */

/* 平板设备 (768px 以下) */
@media (max-width: 768px) {
    .hero-carousel-container {
        padding: 15px 0;
    }
    
    .hero-card {
        flex: 0 0 240px;
        height: 320px;
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .carousel-btn.prev {
        left: 5px;
    }
    
    .carousel-btn.next {
        right: 5px;
    }
    
    .card-title {
        font-size: 18px;
    }
    
    .card-desc {
        font-size: 13px;
    }
}

/* 手机设备 (480px 以下) */
@media (max-width: 480px) {
    .hero-carousel-container {
        padding: 10px 0;
    }
    
    .hero-carousel {
        gap: 16px;
        padding: 5px;
    }
    
    .hero-card {
        flex: 0 0 200px;
        height: 280px;
        border-radius: 16px;
    }
    
    .card-overlay {
        padding: 16px;
    }
    
    .card-title {
        font-size: 16px;
        margin-bottom: 6px;
    }
    
    .card-desc {
        font-size: 12px;
    }
    
    /* 手机端隐藏导航按钮，只用滑动 */
    .carousel-btn {
        display: none;
    }
    
    /* 指示器在手机端更小 */
    .indicator {
        width: 6px;
        height: 6px;
    }
    
    .indicator.active {
        width: 18px;
    }
}

/* 超大屏幕 (1200px 以上) */
@media (min-width: 1200px) {
    .hero-card {
        flex: 0 0 320px;
        height: 420px;
    }
    
    .card-title {
        font-size: 22px;
    }
    
    .card-desc {
        font-size: 15px;
    }
}

/* 全屏显示优化 (1600px 以上) */
@media (min-width: 1600px) {
    /* 导航栏宽度同步 */
    .nav-container {
        max-width: 1800px;
        padding: 16px 60px;
    }
    
    /* Hero容器宽度 */
    .hero-container {
        max-width: 1800px;
        padding: 0 60px;
    }
    
    .hero-card {
        flex: 0 0 360px;
        height: 460px;
    }
    
    .card-title {
        font-size: 24px;
    }
    
    .card-desc {
        font-size: 16px;
    }
}