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

:root {
    --primary-color: #00704A;
    --secondary-color: #005A3C;
    --text-dark: #2d3748;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.logo-icon {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.logo-icon-fallback {
    height: 40px;
    width: 40px;
}

.logo-text {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.logo-text-fallback {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-links .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
}

.nav-links .btn-primary:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* 英雄区域 - 艺术照片墙 */
/* 英雄区域 - 简洁设计 */
.hero {
    padding: 120px 0 80px;
    background: #e8dcc8;
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container-simple {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
    width: 100%;
}

.hero-text-side {
    padding: 40px 0;
}

.brand-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #00704A;
    letter-spacing: 0;
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

.brand-frame {
    font-style: normal;
    font-weight: 700;
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

.hero-subtitle-simple {
    font-size: 42px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 40px;
    color: #00704A;
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

.hero-disclaimer-simple {
    font-size: 13px;
    color: #666;
    opacity: 0.7;
}

.hero-product-side {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.product-frame-display {
    width: 100%;
    max-width: 540px; /* 450px * 1.2 = 540px */
    padding: 24px;
    background:
        linear-gradient(145deg, #8b6f47 0%, #6b5435 50%, #8b6f47 100%),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
    border-radius: 10px;
    box-shadow:
        0 24px 72px rgba(0, 0, 0, 0.2),
        inset 0 2px 5px rgba(255, 255, 255, 0.2),
        inset 0 -2px 5px rgba(0, 0, 0, 0.3),
        inset 3px 3px 8px rgba(139, 111, 71, 0.4),
        inset -3px -3px 8px rgba(107, 84, 53, 0.4);
    position: relative;
}

.product-frame-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        repeating-linear-gradient(0deg,
            transparent 0px,
            rgba(0,0,0,0.02) 1px,
            transparent 2px,
            transparent 8px),
        repeating-linear-gradient(90deg,
            transparent 0px,
            rgba(0,0,0,0.015) 1px,
            transparent 2px,
            transparent 12px);
    border-radius: 10px;
    pointer-events: none;
}

.frame-white-border {
    background: white;
    padding: 48px; /* 调整为48px宽 */
    box-shadow: 0 24px 72px rgba(0, 0, 0, 0.18);
    border-radius: 5px;
}

.frame-display-area {
    width: 100%;
    aspect-ratio: 3/4;
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.product-hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    object-position: 70% 50%; /* 向左移动20% (50% + 20% = 70%) */
}

.fallback-gradient {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.photo-wall-container {
    position: relative;
    width: 100%;
    min-height: 100vh;
}

.photo-wall {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 300px;
    gap: 20px;
    padding: 20px;
    opacity: 0.3;
}

.photo-item {
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.photo-item:hover {
    transform: scale(1.05);
    opacity: 1;
    z-index: 10;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.photo-large {
    grid-column: span 2;
}

.photo-medium {
    grid-column: span 1;
}

.photo-small {
    grid-column: span 1;
}

.photo-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 30px 20px 20px;
    opacity: 0;
    transition: opacity 0.3s;
}

.photo-item:hover .photo-overlay {
    opacity: 1;
}

.photo-label {
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
}

.hero-content-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 100;
    width: 90%;
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: white;
}

.gradient-text {
    background: linear-gradient(135deg, #2D9B87, #4ECDC4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #2D9B87, #4ECDC4);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(45, 155, 135, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #2D9B87;
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

/* 产品展示区域 */
.product-showcase {
    padding: 100px 0;
    background: white;
}

.product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.product-image {
    display: flex;
    justify-content: center;
    animation: fadeInLeft 1s ease-out;
}

.frame-mockup {
    width: 100%;
    max-width: 500px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
}

.frame-mockup:hover {
    transform: scale(1.05);
}

.frame-img {
    width: 100%;
    height: auto;
    display: block;
}

.product-info {
    animation: fadeInRight 1s ease-out;
}

.product-title-new {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #00704A;
    letter-spacing: 0;
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

.product-frame-text {
    font-style: normal;
    font-weight: 700;
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

.product-title {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #2D9B87, #4ECDC4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.product-subtitle {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.product-description {
    font-size: 13px;
    color: #718096;
    line-height: 1.8;
    margin-bottom: 0;
}

.product-features {
    list-style: none;
    margin-bottom: 2.5rem;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.05rem;
    color: var(--text-dark);
}

.product-features svg {
    color: #2D9B87;
    flex-shrink: 0;
}

.product-cta {
    display: flex;
    gap: 1rem;
}

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

.btn-outline-dark:hover {
    background: var(--text-dark);
    color: white;
}

/* 手机模型 */
.hero-image {
    display: flex;
    justify-content: center;
    animation: fadeInRight 1s ease-out;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 40px;
    padding: 15px;
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 30px;
    overflow: hidden;
    padding: 20px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    height: 100%;
}

.gallery-item {
    border-radius: 15px;
    animation: pulse 2s ease-in-out infinite;
}

.gallery-item:nth-child(1) { animation-delay: 0s; }
.gallery-item:nth-child(2) { animation-delay: 0.2s; }
.gallery-item:nth-child(3) { animation-delay: 0.4s; }
.gallery-item:nth-child(4) { animation-delay: 0.6s; }
.gallery-item:nth-child(5) { animation-delay: 0.8s; }
.gallery-item:nth-child(6) { animation-delay: 1s; }

/* 艺术墙展示区域 - 参考英雄区域布局 */
.art-wall-section {
    padding: 120px 0 80px;
    background: #f5ede3;
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.art-wall-container-simple {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
    width: 100%;
}

.art-wall-text-side {
    padding: 40px 0;
}

.art-wall-text-side .section-title {
    text-align: left;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: #00704A;
}

.art-wall-subtitle {
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 30px;
    color: #2d3748;
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

.art-wall-description {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 40px;
}

.art-wall-disclaimer {
    font-size: 13px;
    color: #666;
    opacity: 0.7;
}

.art-wall-visual-side {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.art-wall-frame-display {
    width: 100%;
    max-width: 540px;
    padding: 24px;
    background:
        linear-gradient(145deg, #8b6f47 0%, #6b5435 50%, #8b6f47 100%),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
    border-radius: 10px;
    box-shadow:
        0 24px 72px rgba(0, 0, 0, 0.2),
        inset 0 2px 5px rgba(255, 255, 255, 0.2),
        inset 0 -2px 5px rgba(0, 0, 0, 0.3),
        inset 3px 3px 8px rgba(139, 111, 71, 0.4),
        inset -3px -3px 8px rgba(107, 84, 53, 0.4);
    position: relative;
}

.art-wall-frame-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        repeating-linear-gradient(0deg,
            transparent 0px,
            rgba(0,0,0,0.02) 1px,
            transparent 2px,
            transparent 8px),
        repeating-linear-gradient(90deg,
            transparent 0px,
            rgba(0,0,0,0.015) 1px,
            transparent 2px,
            transparent 12px);
    border-radius: 10px;
    pointer-events: none;
}

.art-wall-frame-display .frame-white-border {
    background: white;
    padding: 48px;
    box-shadow: 0 24px 72px rgba(0, 0, 0, 0.18);
    border-radius: 5px;
}

.art-wall-frame-display .frame-display-area {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.art-wall-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}


/* 艺术模式展示区域 */
.art-mode-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.art-mode-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.art-mode-text {
    animation: fadeInRight 1s ease-out;
}

.art-mode-text .section-title {
    text-align: left;
}

.art-mode-text .section-subtitle {
    text-align: left;
}

.art-mode-description {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.8;
    margin: 2rem 0;
    text-align: left;
}

.art-mode-features {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.art-mode-features li {
    text-align: center;
}

.feature-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #2D9B87, #4ECDC4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.feature-text {
    font-size: 0.95rem;
    color: var(--text-dark);
    font-weight: 500;
}

.art-mode-visual {
    display: flex;
    justify-content: center;
    animation: fadeInLeft 1s ease-out;
}

.frame-display {
    position: relative;
}

.frame-outer {
    padding: 20px;
    background: linear-gradient(145deg, #8b6f47, #6b5435);
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.frame-inner {
    padding: 15px;
    background: white;
    border-radius: 10px;
}

.artwork-display {
    width: 300px;
    height: 400px;
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.moment-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.moment-image.active {
    opacity: 1;
}

.artwork {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.artwork.active {
    opacity: 1;
}

.frame-label {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

/* 功能展示区域 */
.features-showcase-section {
    padding: 60px 0;
    background: #f0ece4;
}

.features-showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

.feature-showcase-item {
    text-align: center;
    padding: 15px;
}

.feature-showcase-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.feature-showcase-icon img {
    border-radius: 50%;
    object-fit: cover;
}

.feature-showcase-icon svg {
    width: 80px;
    height: 80px;
}

.feature-showcase-item h3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    color: #2a2a2a;
    margin: 0;
}

.feature-asterisk {
    color: #666;
    font-size: 14px;
}

/* 边框选择区域 */
.frame-options-section {
    padding: 100px 0;
    background: white;
}

.frame-options-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    margin-top: 3rem;
}

.frame-option {
    text-align: center;
    cursor: pointer;
    transition: transform 0.3s;
}

.frame-option:hover {
    transform: translateY(-10px);
}

.frame-preview {
    width: 100%;
    aspect-ratio: 4/3;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s;
}

.frame-option:hover .frame-preview {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.frame-walnut {
    background: linear-gradient(145deg, #5d4e37, #4a3c2a);
}

.frame-oak {
    background: linear-gradient(145deg, #c19a6b, #a67c52);
}

.frame-white {
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
}

.frame-black {
    background: linear-gradient(145deg, #2c2c2c, #1a1a1a);
}

.preview-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 5px;
}

.frame-option h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.frame-option p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 尺寸选择区域 */
.size-options-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8eef3 100%);
}

.size-comparison {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    align-items: end;
}

.size-option {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
}

.size-option:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.size-option.featured {
    background: linear-gradient(135deg, #2D9B87, #4ECDC4);
    color: white;
    transform: scale(1.05);
}

.size-option.featured h3,
.size-option.featured p {
    color: white;
}

.size-frame {
    margin: 0 auto 1.5rem;
    padding: 10px;
    background: linear-gradient(145deg, #8b6f47, #6b5435);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.size-display {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}

.size-small .size-frame {
    width: 80px;
    height: 60px;
}

.size-medium .size-frame {
    width: 120px;
    height: 90px;
}

.size-large .size-frame {
    width: 160px;
    height: 120px;
}

.size-xlarge .size-frame {
    width: 200px;
    height: 150px;
}

.size-option h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.size-option p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.size-option.featured p {
    color: rgba(255, 255, 255, 0.9);
}

.size-use {
    font-size: 0.85rem;
    font-style: italic;
}

.popular-badge {
    position: absolute;
    top: -10px;
    right: -10px;
    background: #ff6b6b;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
}

/* 功能区域 */
.features {
    padding: 100px 0;
    background: white;
}

/* 隐藏功能区域和展示区域 */
#features.features,
#showcase.showcase {
    display: none !important;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: #00704A;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #2d3748;
    text-align: center;
    margin-bottom: 4rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 展示区域 */
.showcase {
    padding: 100px 0;
    background: var(--bg-light);
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

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

.showcase-image {
    margin-bottom: 1.5rem;
}

.demo-box {
    height: 250px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.demo-box:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.demo-content {
    color: white;
    text-align: center;
}

.demo-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.demo-content p {
    font-size: 1.2rem;
    font-weight: 600;
}

.showcase-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.showcase-item p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 关于区域 */
.about {
    padding: 100px 0;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: 13px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

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

.about-visual {
    position: relative;
    height: 400px;
}

.visual-circle {
    position: absolute;
    border-radius: 50%;
    animation: float 3s ease-in-out infinite;
}

.circle-1 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    top: 0;
    left: 0;
    opacity: 0.8;
}

.circle-2 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, #f093fb, #f5576c);
    top: 100px;
    right: 50px;
    opacity: 0.7;
    animation-delay: 0.5s;
}

.circle-3 {
    width: 180px;
    height: 180px;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    bottom: 0;
    left: 100px;
    opacity: 0.6;
    animation-delay: 1s;
}

/* 联系区域 */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
}

.contact-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* 页脚 */
.footer {
    background: #1a202c;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-section p {
    color: #a0aec0;
    line-height: 1.8;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #2d3748;
    color: #a0aec0;
}

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

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-container-simple {
        grid-template-columns: 1fr;
        gap: 50px;
        padding: 0 30px;
    }

    .brand-title {
        font-size: 40px;
    }

    .hero-subtitle-simple {
        font-size: 32px;
    }

    .hero-product-side {
        padding: 20px;
    }

    .product-frame-display {
        max-width: 420px; /* 350px * 1.2 = 420px */
    }

    /* 艺术墙区域响应式 */
    .art-wall-container-simple {
        grid-template-columns: 1fr;
        gap: 50px;
        padding: 0 30px;
    }

    .art-wall-text-side .section-title {
        font-size: 2rem;
    }

    .art-wall-subtitle {
        font-size: 1.2rem;
    }

    .art-wall-description {
        font-size: 1rem;
    }

    .art-wall-visual-side {
        padding: 20px;
    }

    .art-wall-frame-display {
        max-width: 420px;
    }

    .photo-wall {
        grid-template-columns: 1fr;
        grid-auto-rows: 200px;
        gap: 15px;
        padding: 15px;
    }

    .photo-large,
    .photo-medium,
    .photo-small {
        grid-column: span 1;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
        flex-direction: column;
        align-items: center;
    }

    .btn-large {
        width: 100%;
        max-width: 300px;
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .product-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .product-title-new {
        font-size: 40px;
    }

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

    .product-subtitle {
        font-size: 1.3rem;
    }

    .product-cta {
        flex-direction: column;
    }

    .product-cta .btn {
        width: 100%;
    }

    .art-mode-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .artwork-display {
        width: 100%;
        max-width: 300px;
        height: 400px;
    }

    .art-mode-features {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .frame-options-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .size-comparison {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .size-option.featured {
        transform: scale(1);
    }

    .features-showcase-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .nav-links {
        display: none;
    }

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

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-visual {
        display: none;
    }

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

    .contact-buttons {
        flex-direction: column;
        align-items: center;
    }

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

/* 小屏幕响应式 */
@media (max-width: 480px) {
    .brand-title {
        font-size: 32px;
    }

    .hero-subtitle-simple {
        font-size: 26px;
    }

    .product-title-new {
        font-size: 32px;
    }

    .hero-container-simple {
        padding: 0 20px;
        gap: 40px;
    }

    .product-frame-display {
        max-width: 336px; /* 280px * 1.2 = 336px */
    }

    /* 艺术墙区域小屏幕响应式 */
    .art-wall-container-simple {
        padding: 0 20px;
        gap: 40px;
    }

    .art-wall-text-side .section-title {
        font-size: 1.8rem;
    }

    .art-wall-subtitle {
        font-size: 1.1rem;
    }

    .art-wall-frame-display {
        max-width: 336px;
    }

    .features-showcase-grid {
        grid-template-columns: 1fr;
        gap: 25px;
        padding: 15px 10px;
    }

    .feature-showcase-icon {
        width: 80px;
        height: 80px;
    }

    .feature-showcase-icon img {
        width: 60px;
        height: 60px;
    }

    .feature-showcase-icon svg {
        width: 60px;
        height: 60px;
    }

    .feature-showcase-item h3 {
        font-size: 15px;
    }
}

/* 语言选择器样式 */
.language-selector {
    position: relative;
    display: inline-block;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 112, 74, 0.3);
}

.lang-btn svg {
    width: 20px;
    height: 20px;
}

.lang-current {
    font-weight: 500;
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    min-width: 140px;
    z-index: 1000;
}

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

.lang-dropdown button {
    display: block;
    width: 100%;
    padding: 12px 20px;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    font-size: 15px;
    color: var(--text-dark);
    transition: all 0.2s ease;
}

.lang-dropdown button:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

.lang-dropdown button:not(:last-child) {
    border-bottom: 1px solid #e2e8f0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .language-selector {
        margin-left: auto;
    }

    .lang-btn {
        padding: 8px 16px;
        font-size: 14px;
    }

    .lang-btn svg {
        width: 18px;
        height: 18px;
    }

    .lang-dropdown {
        min-width: 120px;
    }
}