/* BESS Ultra-Modern Minimalist Design System */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* Ultra-modern Color Palette */
    --black: #000000;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-400: #a3a3a3;
    --gray-600: #525252;
    --gray-800: #262626;
    --gray-900: #171717;
    
    --blue: #0066ff;
    --green: #00d084;
    --yellow: #ffb800;
    
    /* Typography - Ultra-clean */
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    
    /* Minimalist Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    
    /* Pure Shadows */
    --shadow-soft: 0 2px 16px rgba(0, 0, 0, 0.04);
    --shadow-medium: 0 4px 32px rgba(0, 0, 0, 0.08);
    --shadow-strong: 0 8px 64px rgba(0, 0, 0, 0.12);
    
    /* Perfect Borders */
    --border-radius: 12px;
    --border-radius-lg: 24px;
    --border-radius-full: 9999px;
    
    /* Fluid Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background: var(--white);
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--gray-900);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

/* Ultra-Minimalist Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.1;
    color: var(--black);
    letter-spacing: -0.025em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.875rem, 4vw, 2.5rem); }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 1rem;
}

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

/* Ultra-Modern Buttons */
.btn-primary, .btn-ghost, .btn-outline, .whatsapp-cta, .whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--gray-800);
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
}

.btn-ghost:hover {
    color: var(--black);
    border-color: var(--gray-400);
    background: var(--gray-50);
}

.btn-outline {
    background: transparent;
    color: var(--blue);
    border: 1px solid var(--blue);
}

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

.btn-primary.large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Ultra-Minimal Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-100);
    z-index: 100;
    transition: var(--transition);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.logo {
    font-size: 1.5rem;
}

.wordmark {
    font-size: 1.25rem;
    color: var(--black);
    letter-spacing: -0.025em;
}

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

.nav-links a {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.cta-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: #25D366;
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.cta-nav:hover {
    background: #22c55e;
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
}

/* Hero Section - 完全重构 */
.hero {
    padding: 120px 0 80px 0;
    background: linear-gradient(135deg, #fafafa 0%, #ffffff 100%);
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 左侧内容区域 */
.hero-left {
    max-width: 540px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: var(--blue);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--black);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 40px;
    font-weight: 400;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.metric {
    text-align: center;
    padding: 20px;
    background: var(--white);
    border-radius: 12px;
    border: 1px solid var(--gray-100);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.metric-value {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--blue);
    line-height: 1;
    margin-bottom: 4px;
}

.metric-label {
    font-size: 12px;
    color: var(--gray-600);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

/* 右侧图片区域 */
.hero-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-container {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.hero-banner-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.hero-placeholder-image{width:100%;height:400px;background:linear-gradient(135deg,#e2e8f0 0%,#cbd5e1 50%,#94a3b8 100%);border-radius:16px;box-shadow:0 20px 40px rgba(0,0,0,0.1);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;}

.hero-placeholder-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 30px,
        rgba(255,255,255,0.1) 30px,
        rgba(255,255,255,0.1) 60px
    );
    opacity: 0.7;
}

.image-content {
    text-align: center;
    z-index: 2;
    position: relative;
    color: var(--white);
    padding: 40px;
}

.image-icon {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.9;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.image-text {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
    line-height: 1.3;
}

.image-subtitle {
    font-size: 14px;
    opacity: 0.9;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.hero-badges {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hero-tag {
    background: rgba(255,255,255,0.95);
    color: var(--blue);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Company Introduction Section */
.company-intro {
    padding: var(--space-xl) 0;
    background: var(--white);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.intro-left .section-header {
    text-align: left;
    margin-bottom: var(--space-md);
    max-width: none;
}

.intro-right .section-header {
    text-align: left;
    margin-bottom: var(--space-md);
    max-width: none;
}

.intro-left .section-header h2,
.intro-right .section-header h2 {
    color: var(--black);
    font-size: 2.5rem;
    margin-bottom: var(--space-xs);
}

.section-subtitle {
    color: var(--blue);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.025em;
}

.intro-text {
    max-width: none;
}

.intro-primary {
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--gray-800);
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.intro-secondary {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-600);
    margin-bottom: var(--space-lg);
}

.intro-highlights {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.highlight {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-start;
}

.highlight-icon {
    font-size: 1.5rem;
    width: 3rem;
    height: 3rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 1px solid var(--gray-100);
}

.highlight-content h4 {
    color: var(--black);
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.highlight-content p {
    color: var(--gray-600);
    font-size: 0.9rem;
    line-height: 1.5;
}

.intro-right {
    position: relative;
}

.company-image-container {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    background: var(--gray-50);
}

.company-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.1) 0%,
        rgba(0, 102, 255, 0.1) 100%
    );
    display: flex;
    align-items: flex-end;
    padding: var(--space-md);
}

.overlay-badge {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    padding: var(--space-sm);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
}

.overlay-badge span {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gray-800);
}

.overlay-badge span:first-child {
    color: var(--blue);
}

/* Responsive Design for Company Intro */
@media (max-width: 1024px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .intro-left .section-header,
    .intro-right .section-header {
        text-align: center;
    }
    
    .intro-left {
        order: -1;
    }
    
    .company-image {
        height: 350px;
    }
}

@media (max-width: 768px) {
    .intro-content {
        gap: var(--space-md);
        padding: 0 var(--space-sm);
    }
    
    .intro-left .section-header h2,
    .intro-right .section-header h2 {
        font-size: 2rem;
    }
    
    .intro-primary {
        font-size: 1.1rem;
    }
    
    .intro-secondary {
        font-size: 0.95rem;
    }
    
    .company-image {
        height: 280px;
    }
    
    .intro-highlights {
        gap: var(--space-sm);
    }
    
    .highlight-content h4 {
        font-size: 1rem;
    }
    
    .highlight-content p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .company-intro {
        padding: var(--space-lg) 0;
    }
    
    .intro-left .section-header h2,
    .intro-right .section-header h2 {
        font-size: 1.75rem;
    }
    
    .company-image {
        height: 240px;
    }
    
    .highlight {
        gap: var(--space-xs);
    }
    
    .highlight-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.25rem;
    }
    
    .overlay-badge {
        padding: var(--space-xs);
    }
    
    .overlay-badge span {
        font-size: 0.75rem;
    }
}

/* Ultra-Minimal Value Props */
.value-props {
    padding: var(--space-xl) 0;
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    margin-bottom: var(--space-sm);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-600);
}

.props-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
}

.prop {
    text-align: center;
    padding: var(--space-md);
    background: var(--white);
    border-radius: var(--border-radius);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.prop:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    border-color: var(--gray-200);
}

.prop-icon {
    width: 3rem;
    height: 3rem;
    background: var(--blue);
    color: var(--white);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin: 0 auto var(--space-sm);
}

.prop h3 {
    margin-bottom: var(--space-xs);
    color: var(--black);
    font-size: 1.1rem;
}

.prop p {
    color: var(--gray-600);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Products Section */
.products {
    padding: var(--space-xl) 0;
    background: var(--white);
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    background: var(--gray-50);
    padding: 0.25rem;
    border-radius: var(--border-radius);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.tab {
    padding: 0.75rem 1.5rem;
    border: none;
    background: transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
}

.tab.active {
    background: var(--white);
    color: var(--black);
    box-shadow: var(--shadow-soft);
}

.product-grid {
    display: none;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.product-grid.active {
    display: grid;
}

.product-grid.single {
    max-width: 600px;
    margin: 0 auto;
    grid-template-columns: 1fr;
}

.product-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 0;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    border-color: var(--gray-200);
}

.product-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--gray-50);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.product-image img,
.product-image .placeholder-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 0;
}

/* CSS Generated Placeholder Images */
.placeholder-image{width:100%;height:100%;min-height:200px;background:linear-gradient(135deg,#f1f5f9 0%,#e2e8f0 50%,#cbd5e1 100%);display:flex;align-items:center;justify-content:center;color:var(--gray-700);font-size:0.9rem;font-weight:600;text-align:center;position:relative;overflow:hidden;}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    z-index: 2;
    position: relative;
    padding: var(--space-md);
}

.placeholder-icon {
    font-size: 2.5rem;
    opacity: 0.8;
    color: var(--blue);
    margin-bottom: var(--space-xs);
}

.placeholder-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 20px,
        rgba(255,255,255,0.1) 20px,
        rgba(255,255,255,0.1) 40px
    );
    opacity: 0.3;
    z-index: 1;
}

.industrial-placeholder {
    min-height: 250px;
}

.industrial-placeholder .placeholder-icon {
    font-size: 3rem;
}

.hero-placeholder {
    height: 100%;
    min-height: 300px;
    font-size: 1.2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #cbd5e1 100%);
    border-radius: 0;
}

.hero-placeholder .placeholder-icon {
    font-size: 3.5rem;
    color: var(--blue);
    margin-bottom: var(--space-sm);
}

.hero-placeholder .placeholder-content {
    gap: var(--space-md);
}

.hero-placeholder span {
    font-weight: 600;
    color: var(--gray-700);
    text-align: center;
    line-height: 1.3;
}

.industrial-placeholder {
    height: 250px;
}

.industrial-placeholder .placeholder-icon {
    font-size: 2.5rem;
}

.product-card.featured {
    border-color: var(--green);
    box-shadow: var(--shadow-medium);
}

.product-card.flagship {
    border-color: var(--blue);
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
}

.card-header {
    margin-bottom: var(--space-sm);
    padding: var(--space-md) var(--space-md) 0;
}

.specs {
    margin-bottom: var(--space-sm);
    padding: 0 var(--space-md);
}

.product-card .btn-primary,
.product-card .btn-outline {
    margin: var(--space-md);
    margin-top: 0;
}

.badge {
    background: var(--gray-800);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    display: inline-block;
}

.badge.popular {
    background: var(--green);
}

.badge.flagship {
    background: var(--blue);
}

.card-header h4 {
    margin-bottom: 0.25rem;
    color: var(--black);
    font-size: 1.25rem;
}

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

.specs {
    margin-bottom: var(--space-sm);
}

.spec {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-100);
}

.spec:last-child {
    border-bottom: none;
}

.spec span {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.spec strong {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--black);
}

/* Tech Specs Section */
.tech-specs {
    padding: var(--space-xl) 0;
    background: var(--gray-50);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
}

.spec-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: var(--space-md);
    text-align: center;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.spec-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    border-color: var(--gray-200);
}

.spec-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.spec-card h4 {
    margin-bottom: var(--space-sm);
    color: var(--black);
    font-size: 1.1rem;
}

.spec-list {
    text-align: left;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-100);
}

.spec-item:last-child {
    border-bottom: none;
}

.spec-item span {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.spec-item strong {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--black);
}

/* Applications Section */
.applications {
    padding: var(--space-xl) 0;
    background: var(--white);
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
}

.app-card {
    background: var(--gray-50);
    border-radius: var(--border-radius);
    padding: var(--space-md);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--gray-100);
}

.app-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    background: var(--white);
}

.app-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.app-card h4 {
    margin-bottom: var(--space-xs);
    color: var(--black);
    font-size: 1.1rem;
}

.app-details {
    margin-top: var(--space-sm);
    text-align: left;
}

.app-feature {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin-bottom: 0.25rem;
    line-height: 1.4;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    font-size: 0.85rem;
}

.features-list span {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
}

/* Contact Section */
.contact {
    padding: var(--space-xl) 0;
    background: var(--gray-50);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.contact-left h2 {
    margin-bottom: var(--space-sm);
}

.contact-left p {
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
}

.contact-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.feature {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.feature i {
    width: 2rem;
    height: 2rem;
    background: var(--blue);
    color: var(--white);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.feature span {
    color: var(--gray-600);
    font-size: 0.9rem;
    font-weight: 500;
}

.contact-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-md);
    text-align: center;
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow-soft);
}

.contact-card h3 {
    margin-bottom: var(--space-xs);
    color: var(--black);
}

.contact-card p {
    color: var(--gray-600);
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
}

.whatsapp-cta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: #25D366;
    color: var(--white);
    padding: var(--space-sm);
    border-radius: var(--border-radius);
    text-decoration: none;
    margin-bottom: var(--space-md);
    transition: var(--transition);
}

.whatsapp-cta:hover {
    background: #22c55e;
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.wa-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.wa-content {
    text-align: left;
    flex: 1;
}

.wa-content strong {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.wa-content span {
    font-size: 0.8rem;
    opacity: 0.9;
}

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

.info-item {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-start;
    text-align: left;
}

.info-item i {
    color: var(--gray-400);
    width: 1.25rem;
    margin-top: 0.25rem;
}

.info-item strong {
    display: block;
    color: var(--black);
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 0.125rem;
}

.info-item span {
    color: var(--gray-600);
    font-size: 0.8rem;
}

/* Ultra-Minimal Footer */
footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--space-lg) 0 var(--space-md) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-brand .logo {
    font-size: 1.25rem;
}

.footer-brand .wordmark {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.025em;
    color: var(--white);
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-badges {
    display: flex;
    gap: var(--space-xs);
}

.footer-badges span {
    background: var(--gray-800);
    color: var(--gray-400);
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius-full);
    font-size: 0.7rem;
    font-weight: 500;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--gray-800);
}

.footer-bottom p {
    color: var(--gray-600);
    font-size: 0.8rem;
}

/* WhatsApp Float Button */
.whatsapp-float {
    position: fixed;
    bottom: var(--space-md);
    right: var(--space-md);
    z-index: 100;
}

.wa-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: #25D366;
    color: var(--white);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-full);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: var(--shadow-strong);
    transition: var(--transition);
}

.wa-btn:hover {
    background: #22c55e;
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(34, 197, 94, 0.4);
}

.wa-btn i {
    font-size: 1.1rem;
}

/* Hero响应式设计 */
@media (max-width: 1024px) {
    .hero {
        padding: 100px 0 60px 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
        padding: 0 20px;
    }
    
    .hero-right {
        order: -1;
    }
    
    .hero-placeholder-image {
        height: 350px;
        max-width: 450px;
        margin: 0 auto;
    }
    
    .hero-metrics {
        max-width: 400px;
        margin: 40px auto;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 80px 0 40px 0;
    }
    
    .hero-content {
        gap: 40px;
        padding: 0 16px;
    }
    
    .hero-placeholder-image {
        height: 280px;
    }
    
    .image-icon {
        font-size: 48px;
        margin-bottom: 16px;
    }
    
    .image-text {
        font-size: 16px;
    }
    
    .image-subtitle {
        font-size: 12px;
    }
    
    .hero-metrics {
        gap: 16px;
        margin-bottom: 32px;
    }
    
    .metric {
        padding: 16px;
    }
    
    .metric-value {
        font-size: 20px;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }
    
    .hero-actions .btn-primary,
    .hero-actions .btn-ghost {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-placeholder-image {
        height: 240px;
    }
    
    .hero-metrics {
        grid-template-columns: 1fr;
        gap: 12px;
        max-width: 300px;
    }
    
    .image-content {
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .contact-card {
        margin-top: var(--space-md);
    }
    
    .whatsapp-cta {
        padding: var(--space-sm);
        font-size: 0.9rem;
    }
    
    .wa-content strong {
        font-size: 0.85rem;
    }
    
    .wa-content span {
        font-size: 0.75rem;
    }
    
    .product-tabs {
        flex-direction: column;
        gap: 0;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .wa-btn span {
        display: none;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-xs);
    }
    
    .hero {
        padding: 6rem 0 4rem 0;
    }
    
    .hero-content {
        gap: var(--space-md);
    }
    
    .hero-metrics {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
    }
    
    .section-header h2 {
        font-size: 1.875rem;
    }
    
    .contact-card {
        padding: var(--space-sm);
        margin: 0;
    }
    
    .whatsapp-cta {
        padding: 12px;
        gap: 8px;
    }
    
    .wa-icon {
        width: 2rem;
        height: 2rem;
        font-size: 1rem;
    }
    
    .wa-content strong {
        font-size: 0.8rem;
    }
    
    .wa-content span {
        font-size: 0.7rem;
    }
    
    .contact-info {
        gap: var(--space-xs);
    }
    
    .info-item {
        gap: var(--space-xs);
    }
    
    .info-item strong {
        font-size: 0.8rem;
    }
    
    .info-item span {
        font-size: 0.75rem;
    }
    
    .whatsapp-float {
        bottom: var(--space-sm);
        right: var(--space-sm);
    }
    
    .wa-btn {
        padding: 0.75rem;
    }
}

/* Minimal Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Scroll Behavior */
html {
    scroll-padding-top: 5rem;
}

/* Selection */
::selection {
    background: var(--blue);
    color: var(--white);
}

/* Focus States */
*:focus-visible {
    outline: 2px solid var(--blue);
    outline-offset: 2px;
}

/* Loading States */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}