/* ==================== CSS 变量 ==================== */
:root {
    /* 颜色系统 */
    --color-primary: #007AFF;
    --color-primary-dark: #0051D5;
    --color-secondary: #5856D6;
    --color-text-primary: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-background: #ffffff;
    --color-background-alt: #f5f5f7;
    --color-border: #d2d2d7;
    --color-card-bg: #ffffff;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --color-shadow-hover: rgba(0, 0, 0, 0.15);
    
    /* 渐变 */
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-card: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px var(--color-shadow);
    --shadow-md: 0 4px 16px var(--color-shadow);
    --shadow-lg: 0 8px 32px var(--color-shadow);
    
    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background-color: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== 通用样式 ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.section-intro {
    font-size: 1.125rem;
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.subsection-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-family: var(--font-family);
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-block {
    width: 100%;
}

/* ==================== Header & Navigation ==================== */
.header {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    padding: 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-primary);
    font-size: 0.9375rem;
    font-weight: 400;
    transition: color 0.2s ease;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
}

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

.lang-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.lang-toggle:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* ==================== Hero Section ==================== */
.hero {
    padding: var(--spacing-xxl) 0 var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--color-background) 0%, var(--color-background-alt) 100%);
}

.hero .container:first-child {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.hero-content {
    padding-right: var(--spacing-lg);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.product-hero-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

.product-hero-placeholder {
    width: 100%;
    height: 500px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #7e8ba3 100%);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.product-hero-placeholder::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

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

/* 产品特性行 */
.features-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-highlight {
    background-color: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all 0.3s ease;
}

.feature-highlight:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.feature-icon-pro {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-md);
    color: white;
}

.feature-icon-pro svg {
    width: 32px;
    height: 32px;
}

.feature-highlight h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.feature-highlight p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==================== Product Showcase ==================== */
.product-showcase {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-background);
}

.product-showcase .container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.showcase-image {
    position: relative;
}

.glasses-collection-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    object-fit: cover;
}

.glasses-collection-placeholder {
    width: 100%;
    height: 450px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 50%, #8e9eab 100%);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.glasses-collection-placeholder::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 40%, rgba(0, 122, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 60%, rgba(88, 86, 214, 0.1) 0%, transparent 50%);
}

.glasses-collection-placeholder::after {
    content: 'VisFuture';
    font-size: 3rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.3);
    letter-spacing: 0.5rem;
    z-index: 1;
}

.showcase-text {
    padding-left: var(--spacing-md);
}

.showcase-text .section-title {
    text-align: left;
    font-size: 2.25rem;
}

.showcase-text .section-intro {
    text-align: left;
    margin-bottom: 0;
}

/* ==================== About Section ==================== */
.about {
    background-color: var(--color-background);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.team-card {
    background-color: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    text-align: center;
}

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

.team-icon-pro {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1), rgba(88, 86, 214, 0.1));
    border-radius: var(--radius-md);
    color: var(--color-primary);
}

.team-icon-pro svg {
    width: 36px;
    height: 36px;
}

.team-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.team-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==================== Products Section ==================== */
.products {
    background-color: var(--color-background-alt);
}

.products-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.feature-card {
    background-color: var(--color-card-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.feature-number {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    background-color: rgba(0, 122, 255, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.feature-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.tech-sidebar {
    background-color: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.tech-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.tech-item {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.tech-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.tech-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.tech-item p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==================== Philosophy Section ==================== */
.philosophy {
    background-color: var(--color-background);
}

.philosophy-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.principle-item {
    margin-bottom: var(--spacing-lg);
}

.principle-item h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.principle-item p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.daily-card {
    background: var(--gradient-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 100px;
}

.daily-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.timeline-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.timeline-item .time {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    min-width: 50px;
}

.timeline-item .scene {
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    line-height: 1.5;
}

.timeline-item .scene small {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

/* ==================== Roadmap Section ==================== */
.roadmap {
    background-color: var(--color-background-alt);
}

.roadmap-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    padding-left: var(--spacing-lg);
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary));
    border-radius: 2px;
}

.roadmap-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-lg);
}

.roadmap-item::before {
    content: '';
    position: absolute;
    left: -38px;
    top: 8px;
    width: 16px;
    height: 16px;
    background-color: var(--color-primary);
    border: 3px solid var(--color-background-alt);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.2);
}

.roadmap-time {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    background-color: rgba(0, 122, 255, 0.1);
    padding: 0.375rem 1rem;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-sm);
}

.roadmap-content {
    background-color: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.roadmap-content:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.roadmap-content h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.roadmap-content p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==================== Contact Section ==================== */
.contact {
    background-color: var(--color-background);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-item {
    padding: var(--spacing-md);
    background-color: var(--color-background-alt);
    border-radius: var(--radius-md);
}

.info-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: 1.125rem;
    color: var(--color-text-primary);
}

.info-value a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.info-value a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.contact-form {
    background-color: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ==================== Footer ==================== */
.footer {
    background-color: var(--color-text-primary);
    color: var(--color-background-alt);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer p {
    font-size: 0.9375rem;
    opacity: 0.8;
}

/* ==================== Back to Top Button ==================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ==================== 响应式设计 ==================== */

/* 平板设备 */
@media (max-width: 1024px) {
    :root {
        --spacing-xxl: 4rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero .container:first-child {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .hero-content {
        padding-right: 0;
    }
    
    .features-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .product-showcase .container {
        grid-template-columns: 1fr;
    }
    
    .showcase-text {
        padding-left: 0;
        margin-top: var(--spacing-md);
    }
    
    .showcase-text .section-title {
        text-align: center;
    }
    
    .showcase-text .section-intro {
        text-align: center;
    }
    
    .products-layout {
        grid-template-columns: 1fr;
    }
    
    .philosophy-content {
        grid-template-columns: 1fr;
    }
    
    .daily-card {
        position: static;
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
    }
}

/* 移动设备 */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
        --spacing-xxl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    /* 导航栏 */
    .nav-toggle {
        display: flex;
    }
    
    .nav-right {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: saturate(180%) blur(20px);
        flex-direction: column;
        gap: 0;
        padding: 0;
        border-bottom: 1px solid var(--color-border);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-right.active {
        max-height: 500px;
        padding: var(--spacing-sm) 0;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .lang-toggle {
        width: calc(100% - 2rem);
        margin: var(--spacing-sm) var(--spacing-sm) 0;
    }
    
    /* Hero */
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    /* 团队卡片 */
    .team-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    /* 产品功能 */
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    /* 路线图 */
    .roadmap-timeline {
        padding-left: var(--spacing-md);
    }
    
    .roadmap-item {
        padding-left: var(--spacing-md);
    }
    
    .roadmap-item::before {
        left: -30px;
    }
    
    /* 返回顶部按钮 */
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 44px;
        height: 44px;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero-card {
        padding: var(--spacing-md);
    }
    
    .card-header {
        font-size: 1.375rem;
    }
    
    .feature-icon {
        font-size: 1.5rem;
    }
    
    .product-hero-placeholder {
        height: 300px;
    }
    
    .glasses-collection-placeholder {
        height: 300px;
    }
    
    .glasses-collection-placeholder::after {
        font-size: 1.5rem;
        letter-spacing: 0.3rem;
    }
}

/* 打印样式 */
@media print {
    .header,
    .nav-toggle,
    .back-to-top,
    .contact-form {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
    }
}