/* Reset and Base Styles */
/* 
 * Fonts: Please add these to your HTML <head> section:
 * <link rel="preconnect" href="https://fonts.googleapis.com">
 * <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
 * <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet">
 */

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

:root {
    color-scheme: light;
    /* Ultra-Modern Gradients - Tech Leaders 2025 */
    --gradient-primary: linear-gradient(135deg, #0c4a6e 0%, #0891b2 50%, #06b6d4 100%);
    --gradient-secondary: linear-gradient(135deg, #0e7490 0%, #0369a1 100%);
    --gradient-tertiary: linear-gradient(135deg, #155e75 0%, #164e63 100%);
    --gradient-warm: linear-gradient(135deg, #0891b2 0%, #0d9488 50%, #059669 100%);
    --gradient-cool: linear-gradient(135deg, #06b6d4 0%, #0ea5e9 100%);
    --gradient-sunset: linear-gradient(135deg, #0c4a6e 0%, #0891b2 50%, #06b6d4 100%);
    --gradient-ocean: linear-gradient(135deg, #164e63 0%, #0891b2 100%);
    --gradient-sky: linear-gradient(135deg, #67e8f9 0%, #22d3ee 100%);
    --gradient-mesh: radial-gradient(at 27% 37%, rgba(8, 145, 178, 0.08) 0px, transparent 50%),
                     radial-gradient(at 97% 21%, rgba(6, 182, 212, 0.08) 0px, transparent 50%),
                     radial-gradient(at 52% 99%, rgba(34, 211, 238, 0.08) 0px, transparent 50%),
                     radial-gradient(at 10% 29%, rgba(14, 116, 144, 0.08) 0px, transparent 50%),
                     radial-gradient(at 97% 96%, rgba(5, 150, 105, 0.08) 0px, transparent 50%),
                     radial-gradient(at 33% 50%, rgba(12, 74, 110, 0.08) 0px, transparent 50%);

    /* Premium Color System */
    --ig-purple: #0891b2;
    --ig-pink: #0d9488;
    --ig-blue: #06b6d4;
    --ig-coral: #0ea5e9;
    --gradient-instagram: linear-gradient(135deg, #0c4a6e 0%, #0891b2 45%, #0d9488 70%, #06b6d4 100%);
    --gradient-glass: linear-gradient(145deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.7) 100%);

    /* Light theme surfaces */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-elevated: rgba(255, 255, 255, 0.9);
    --bg-overlay: rgba(15, 23, 42, 0.5);
    --bg-gradient: linear-gradient(180deg, #ffffff 0%, #f8fafc 65%, #f1f5f9 100%);
    --bg-mesh: var(--gradient-mesh);

    /* Typography colors */
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-tertiary: #64748b;
    --text-gradient: var(--gradient-instagram);

    /* Surfaces */
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-border: rgba(6, 182, 212, 0.08);
    --card-shadow: 0 8px 32px rgba(6, 182, 212, 0.08);
    --card-shadow-hover: 0 24px 64px rgba(6, 182, 212, 0.15), 0 0 1px rgba(6, 182, 212, 0.2);
    --card-hover: rgba(255, 255, 255, 0.95);
    --card-border-strong: rgba(8, 145, 178, 0.15);

    /* Accents */
    --accent-primary: #0891b2;
    --accent-secondary: #0d9488;
    --accent-success: #059669;
    --accent-warning: #f97316;
    --accent-info: #06b6d4;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Typography */
    --font-primary: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Monaco', 'Menlo', 'Consolas', monospace;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
}

/* Dark Theme - 夜间模式适配 */
@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
        /* Unified Dark Surfaces - Deep Teal/Slate */
        --bg-primary: #0a0f14;
        --bg-secondary: #0f1419;
        --bg-tertiary: #1a1f24;
        --bg-elevated: rgba(15, 20, 25, 0.9);
        --bg-overlay: rgba(10, 15, 20, 0.8);
        --bg-gradient: linear-gradient(180deg, #0a0f14 0%, #0f1419 55%, #1a1f24 100%);
        --bg-mesh: radial-gradient(at 27% 37%, rgba(8, 145, 178, 0.12) 0px, transparent 50%),
                   radial-gradient(at 97% 21%, rgba(6, 182, 212, 0.12) 0px, transparent 50%),
                   radial-gradient(at 52% 99%, rgba(5, 150, 105, 0.12) 0px, transparent 50%),
                   radial-gradient(at 10% 29%, rgba(20, 184, 166, 0.12) 0px, transparent 50%),
                   radial-gradient(at 97% 96%, rgba(34, 211, 238, 0.12) 0px, transparent 50%),
                   radial-gradient(at 33% 50%, rgba(14, 165, 233, 0.12) 0px, transparent 50%);

        /* Typography */
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --text-tertiary: #64748b;
        --text-gradient: var(--gradient-instagram);

        /* Cards */
        --card-bg: rgba(15, 20, 25, 0.8);
        --card-border: rgba(6, 182, 212, 0.15);
        --card-shadow: 0 8px 32px rgba(6, 182, 212, 0.12);
        --card-shadow-hover: 0 24px 64px rgba(6, 182, 212, 0.2), 0 0 0 1px rgba(6, 182, 212, 0.25);
        --card-hover: rgba(15, 20, 25, 0.9);
        --card-border-strong: rgba(8, 145, 178, 0.25);

        /* Accents */
        --accent-primary: #22d3ee;
        --accent-secondary: #0ea5e9;
        --accent-success: #10b981;
        --accent-warning: #fb923c;
        --accent-info: #38bdf8;

        /* Unified Gradients */
        --gradient-instagram: linear-gradient(135deg, #22d3ee 0%, #0ea5e9 45%, #0891b2 70%, #0d9488 100%);
        --gradient-glass: linear-gradient(145deg, rgba(15, 20, 25, 0.9) 0%, rgba(15, 20, 25, 0.7) 100%);
    }

    /* Header */
    .header {
        background: rgba(6, 12, 32, 0.85) !important;
        backdrop-filter: saturate(180%) blur(20px);
        -webkit-backdrop-filter: saturate(180%) blur(20px);
        border-bottom: 0.5px solid rgba(148, 163, 184, 0.18);
    }

    .nav-link {
        color: var(--text-secondary);
    }

    .nav-link:hover {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.16), rgba(6, 182, 212, 0.16));
        color: var(--text-primary);
    }

    .nav-link.active {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.26), rgba(6, 182, 212, 0.26));
        color: var(--text-primary);
    }

    /* Hero Section */
    .hero {
        background: var(--bg-gradient) !important;
    }
    
    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-mesh);
        opacity: 1;
        pointer-events: none;
        z-index: 1;
    }

    /* All Sections Dark Background */
    section {
        background: var(--bg-primary) !important;
    }

    .products {
        background: var(--bg-secondary) !important;
    }

    .platforms {
        background: var(--bg-tertiary) !important;
    }

    .articles {
        background: var(--bg-secondary) !important;
    }

    .contact-section {
        background: linear-gradient(180deg, rgba(8, 145, 178, 0.15) 0%, rgba(2, 6, 23, 0.95) 75%) !important;
    }

    .contact-section::before {
        opacity: 0.05;
    }

    /* Buttons */
    .btn-secondary {
        background: linear-gradient(145deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.7)) !important;
        border-color: rgba(148, 163, 184, 0.24) !important;
        color: var(--text-primary) !important;
        box-shadow: 0 18px 36px rgba(8, 145, 178, 0.22) !important;
    }

    .btn-secondary:hover {
        border-color: rgba(6, 182, 212, 0.35) !important;
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.22), rgba(6, 182, 212, 0.22)) !important;
        box-shadow: 0 28px 48px rgba(8, 145, 178, 0.3) !important;
    }

    /* Product Cards */
    .product-card,
    .contact-item,
    .article-item,
    .blog-card,
    .contact-card {
        background: var(--card-bg) !important;
        border-color: var(--card-border);
        box-shadow: var(--card-shadow);
    }

    .product-card:hover,
    .contact-item:hover,
    .article-item:hover,
    .blog-card:hover,
    .contact-card:hover {
        background: var(--card-hover) !important;
        box-shadow: var(--card-shadow-hover);
    }

    .article-item .article-title {
        color: var(--text-primary);
    }

    .article-item .article-excerpt {
        color: var(--text-secondary);
    }

    .article-item .article-date {
        color: var(--text-tertiary);
    }

    .product-status,
    .article-category {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.24), rgba(6, 182, 212, 0.24));
        border-color: rgba(8, 145, 178, 0.35);
        color: var(--text-primary);
    }

    .article-tag {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.14), rgba(13, 148, 136, 0.14));
        border-color: rgba(148, 163, 184, 0.25);
        color: var(--text-secondary);
    }

    .article-tag:hover {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.24), rgba(13, 148, 136, 0.24));
        border-color: rgba(6, 182, 212, 0.35);
        color: var(--text-primary);
    }

    /* Business Email Link */
    .business-contact .email-link {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.2), rgba(6, 182, 212, 0.2));
        border-color: rgba(6, 182, 212, 0.35);
        color: var(--accent-info);
    }

    .business-contact .email-link:hover {
        background: var(--gradient-instagram);
        box-shadow: 0 24px 48px rgba(8, 145, 178, 0.35);
    }

    /* WeChat QR */
    .wechat-contact .qr-container {
        background: var(--card-bg);
        border-color: var(--card-border);
    }

    /* Blog Cards */
    .blog-card-category {
        background: linear-gradient(135deg, rgba(2, 6, 23, 0.85), rgba(15, 23, 42, 0.85));
        border-color: rgba(8, 145, 178, 0.35);
        color: var(--accent-success);
    }

    /* Modal */
    .modal-close {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.16), rgba(6, 182, 212, 0.16));
        border-color: rgba(8, 145, 178, 0.28);
        color: var(--text-secondary);
    }

    .modal-close:hover {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.3), rgba(6, 182, 212, 0.3));
        border-color: rgba(6, 182, 212, 0.45);
        color: var(--text-primary);
    }

    /* Markdown content */
    .markdown-body pre {
        background: linear-gradient(135deg, #0b1220 0%, #111827 100%);
        border-color: rgba(8, 145, 178, 0.28);
    }
    
    .markdown-body code {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.18), rgba(6, 182, 212, 0.18));
        border-color: rgba(6, 182, 212, 0.35);
        color: var(--accent-info);
    }

    .markdown-body blockquote {
        border-left-color: var(--accent-info);
        background: linear-gradient(135deg, rgba(14, 165, 233, 0.14), rgba(14, 165, 233, 0.08));
    }

    .markdown-body th {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.18), rgba(6, 182, 212, 0.18));
    }

    /* Scrollbar */
    ::-webkit-scrollbar-track {
        background: var(--bg-primary);
    }

    ::-webkit-scrollbar-thumb {
        background: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
    }

    ::-webkit-scrollbar-thumb:hover {
        background: var(--gradient-instagram);
    }

    /* Selection */
    ::selection {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.45), rgba(6, 182, 212, 0.45));
        color: var(--text-primary);
    }

    ::-moz-selection {
        background: linear-gradient(135deg, rgba(8, 145, 178, 0.45), rgba(6, 182, 212, 0.45));
        color: var(--text-primary);
    }
}

body {
    font-family: var(--font-primary);
    background: var(--bg-gradient);
    color: var(--text-primary);
    line-height: 1.47059;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 400;
    letter-spacing: -0.022em;
    transition: background 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header - 极简透明毛玻璃 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    border-bottom: 0.5px solid rgba(8, 145, 178, 0.14);
    transition: background 0.4s cubic-bezier(0.28, 0.11, 0.32, 1),
                border-color 0.4s cubic-bezier(0.28, 0.11, 0.32, 1),
                backdrop-filter 0.4s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem var(--spacing-md);
    max-width: 1280px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    background: var(--gradient-instagram);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.04em;
}

.logo .subtitle {
    font-size: 0.6875rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-weight: 400;
    margin-top: 2px;
    letter-spacing: 0.01em;
    opacity: 0.7;
}

.nav {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    transition: color 0.2s ease, background 0.2s ease;
    position: relative;
    font-weight: 400;
    font-size: 0.875rem;
    letter-spacing: -0.01em;
}

.nav-link:hover {
    color: var(--text-primary);
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.12), rgba(6, 182, 212, 0.12));
}

.nav-link.active {
    color: var(--text-primary);
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.18), rgba(6, 182, 212, 0.18));
    font-weight: 500;
}

.nav-link::after {
    display: none;
}

/* Contact Button in Nav */
.btn-contact {
    padding: 0.5rem 1.25rem;
    background: var(--gradient-instagram);
    color: white;
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
    box-shadow: 0 6px 24px rgba(8, 145, 178, 0.24);
    margin-left: 0.5rem;
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(8, 145, 178, 0.32), 0 0 44px rgba(6, 182, 212, 0.22);
}

/* Hero Section - 大气简约 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--bg-gradient);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-mesh);
    opacity: 1;
    pointer-events: none;
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(0deg, var(--bg-primary) 0%, transparent 100%);
    pointer-events: none;
    z-index: 2;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.35;
}

#particleCanvas {
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding-top: 60px;
    max-width: 980px;
    margin: 0 auto;
}

.hero-title {
    color: var(--text-primary);
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: var(--gradient-instagram);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s cubic-bezier(0.28, 0.11, 0.32, 1);
    letter-spacing: -0.045em;
    line-height: 1;
}

.hero-description {
    font-size: clamp(1.25rem, 3vw, 1.875rem);
    color: var(--text-secondary);
    margin-bottom: 3.5rem;
    animation: fadeInUp 0.8s cubic-bezier(0.28, 0.11, 0.32, 1) 0.1s backwards;
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.35;
}

.hero-buttons {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    animation: fadeInUp 0.8s cubic-bezier(0.28, 0.11, 0.32, 1) 0.2s backwards;
    flex-wrap: wrap;
}

/* Buttons - Premium Gradient 按钮 */
.btn {
    padding: 1rem 2.25rem;
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.28s cubic-bezier(0.28, 0.11, 0.32, 1),
                box-shadow 0.28s cubic-bezier(0.28, 0.11, 0.32, 1),
                background 0.28s cubic-bezier(0.28, 0.11, 0.32, 1),
                color 0.28s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    font-size: 1.0625rem;
    letter-spacing: -0.015em;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-instagram);
    color: white;
    box-shadow: 0 6px 28px rgba(8, 145, 178, 0.28);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255,255,255,0.3), transparent);
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 44px rgba(8, 145, 178, 0.35), 0 0 64px rgba(6, 182, 212, 0.24);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-primary .icon {
    display: inline-block;
    margin-left: 0.5rem;
    transition: transform 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.btn-primary:hover .icon {
    transform: translateX(4px);
}

.btn-secondary {
    background: var(--gradient-glass);
    color: var(--text-primary);
    border: 1.5px solid rgba(8, 145, 178, 0.2);
    box-shadow: 0 6px 20px rgba(8, 145, 178, 0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    border-color: rgba(6, 182, 212, 0.32);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.6) 100%);
    transform: translateY(-3px);
    box-shadow: 0 18px 36px rgba(8, 145, 178, 0.22);
}

/* Sections */
section {
    padding: var(--spacing-xl) 0;
    position: relative;
    background: var(--bg-primary);
}

.section-title {
    color: var(--text-primary);
    font-size: clamp(2.25rem, 5vw, 3.25rem);
    text-align: center;
    margin-bottom: 3rem;
    background: var(--gradient-instagram);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    letter-spacing: -0.045em;
    line-height: 1.08;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-instagram);
    border-radius: 2px;
    opacity: 0.6;
}

/* Products Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
    position: relative;
}

/* 1个产品时居中 */
.product-grid.products-count-1 {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* 2个产品时一左一右居中 */
.product-grid.products-count-2 {
    grid-template-columns: repeat(2, minmax(300px, 400px));
    justify-content: center;
}

/* 3个产品时正常网格（默认） */
.product-grid.products-count-3 {
    grid-template-columns: repeat(3, minmax(280px, 1fr));
}

.product-grid::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gradient-instagram), transparent);
}

.product-card {
    background: var(--gradient-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(8, 145, 178, 0.12);
    border-radius: var(--radius-xl);
    padding: 2.25rem;
    transition: transform 0.28s cubic-bezier(0.28, 0.11, 0.32, 1),
                opacity 0.28s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    min-height: 280px;
    will-change: transform;
    contain: paint;
}

.product-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-instagram);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-xl);
    z-index: 0;
    will-change: opacity;
}

.product-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(8, 145, 178, 0.18) 0%, rgba(6, 182, 212, 0.12) 45%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 0;
    will-change: opacity;
}

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

.product-card:hover::before {
    opacity: 0.03;
}

.product-card:hover::after {
    opacity: 1;
}

.product-card > * {
    position: relative;
    z-index: 1;
}

.product-card h3 {
    color: var(--text-primary);
    background: var(--gradient-instagram);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.25rem;
    font-size: 1.625rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.product-card p {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.6;
    letter-spacing: -0.01em;
    flex: 1;
}

.product-status {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
}

.product-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    gap: 0.75rem;
    flex-wrap: wrap;
}

        .product-action-btn {
            padding: 0.5rem 1rem;
            background: linear-gradient(135deg, #0891b2 0%, #0d9488 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 0.875rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            cursor: pointer;
        }
        
        .product-action-btn:hover {
            transform: translateX(4px);
            box-shadow: 0 4px 12px rgba(8, 145, 178, 0.3);
        }.product-join-btn {
    background: linear-gradient(135deg, #f97316 0%, #fb923c 100%);
}

.product-join-btn:hover {
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.product-waiting-info {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
    width: 100%;
}

.status-idea {
    background: linear-gradient(135deg, rgba(156, 163, 175, 0.2), rgba(107, 114, 128, 0.2));
    color: var(--text-primary);
}

.status-planned {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.2), rgba(13, 148, 136, 0.2));
    color: #0891b2;
}

.status-development {
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.2), rgba(249, 115, 22, 0.2));
    color: #f97316;
}

.status-released {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(22, 163, 74, 0.2));
    color: #22c55e;
}

/* Contact Grid */
.contact-layout {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.contact-layout::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(8, 145, 178, 0.12) 0%, rgba(6, 182, 212, 0.08) 45%, transparent 70%);
    pointer-events: none;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.3;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.5;
    }
}

.contact-featured {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.contact-secondary {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1rem;
}

/* Blog Section */
.blog {
    background: var(--bg-primary);
    position: relative;
}

.blog::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--card-border), transparent);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-top: -0.5rem;
    margin-bottom: 3rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    position: relative;
}

/* Articles Section */
.articles {
    background: var(--bg-primary);
    position: relative;
}

.articles::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(8, 145, 178, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.article-list {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.article-list::before {
    content: '';
    position: absolute;
    left: -40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, 
        transparent 0%, 
        var(--gradient-instagram) 20%, 
        var(--gradient-instagram) 80%, 
        transparent 100%);
    opacity: 0.2;
}

.article-item {
    background: var(--gradient-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: 2.25rem;
    margin-bottom: 1.5rem;
    cursor: pointer;
    transition: transform 0.28s cubic-bezier(0.28, 0.11, 0.32, 1),
                opacity 0.28s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    will-change: transform;
    contain: paint;
}

.article-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 0;
    background: var(--gradient-instagram);
    transition: height 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    will-change: height;
}

.article-item::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-instagram);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-xl);
    z-index: 0;
    will-change: opacity;
}

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

.article-item:hover::before {
    height: 100%;
}

.article-item:hover::after {
    opacity: 0.03;
}

.article-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.article-title {
    color: var(--text-primary);
    font-size: 1.625rem;
    background: var(--gradient-instagram);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    font-weight: 700;
    flex: 1;
    letter-spacing: -0.03em;
    line-height: 1.3;
}

.article-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.article-date {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    font-family: var(--font-mono);
    font-weight: 400;
}

.article-category {
    display: inline-block;
    padding: 0.5rem 1.125rem;
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.16), rgba(6, 182, 212, 0.16));
    color: var(--accent-primary);
    border-radius: var(--radius-lg);
    font-size: 0.8125rem;
    border: 1px solid var(--card-border-strong);
    font-weight: 600;
}

.article-reading-time {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.article-reading-time::before {
    content: '📖 ';
}

.article-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.01em;
    position: relative;
    z-index: 1;
}

.article-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.article-tag {
    padding: 0.5rem 0.875rem;
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.08), rgba(6, 182, 212, 0.08));
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    border: 1px solid rgba(8, 145, 178, 0.18);
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.article-tag:hover {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.18), rgba(13, 148, 136, 0.18));
    border-color: rgba(6, 182, 212, 0.32);
    color: var(--accent-secondary);
}

/* Article Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: modalFadeIn 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

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

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-overlay);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    background: var(--bg-primary);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 32px 64px rgba(0, 0, 0, 0.24);
    animation: modalSlideIn 0.5s cubic-bezier(0.28, 0.11, 0.32, 1);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    justify-content: flex-end;
    background: var(--bg-elevated);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.modal-close {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.12), rgba(6, 182, 212, 0.12));
    border: 1px solid rgba(8, 145, 178, 0.22);
    color: var(--text-secondary);
    font-size: 1.125rem;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 300;
}

.modal-close:hover {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.24), rgba(13, 148, 136, 0.24));
    border-color: rgba(6, 182, 212, 0.32);
    color: var(--text-primary);
    transform: rotate(90deg);
}

.modal-body {
    padding: 2.5rem;
    max-height: calc(90vh - 80px);
    overflow-y: auto;
}

/* Markdown Styles - Apple 风格 */
.markdown-body {
    color: var(--text-primary);
    line-height: 1.6;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    color: var(--text-primary);
    background: var(--text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.markdown-body h1 {
    font-size: 2.5rem;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 0.75rem;
    margin-top: 0;
}

.markdown-body h2 {
    font-size: 2rem;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 0.5rem;
}

.markdown-body h3 {
    font-size: 1.5rem;
}

.markdown-body h4 {
    font-size: 1.25rem;
}

.markdown-body p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    letter-spacing: -0.01em;
}

.markdown-body a {
    color: var(--accent-secondary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.markdown-body a:hover {
    border-bottom-color: var(--accent-secondary);
}

.markdown-body ul,
.markdown-body ol {
    margin-bottom: 1.25rem;
    padding-left: 2rem;
    color: var(--text-secondary);
}

.markdown-body li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.markdown-body blockquote {
    border-left: 3px solid var(--accent-info);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    color: var(--text-secondary);
    background: rgba(8, 145, 178, 0.08);
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-sm);
}

.markdown-body code {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.08), rgba(6, 182, 212, 0.08));
    color: var(--accent-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.875em;
    border: 1px solid rgba(8, 145, 178, 0.18);
}

.markdown-body pre {
    background: #f6f8fa;
    color: #1f2937;
    border: 1px solid rgba(8, 145, 178, 0.15);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    overflow-x: auto;
    margin: 1.5rem 0;
}

.markdown-body pre code {
    background: transparent;
    padding: 0;
    color: inherit;
    border: none;
}

.markdown-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 1.5rem 0;
    box-shadow: 0 20px 44px rgba(15, 23, 42, 0.12);
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.markdown-body th,
.markdown-body td {
    border: 1px solid var(--card-border);
    padding: 0.875rem;
    text-align: left;
}

.markdown-body th {
    background: rgba(8, 145, 178, 0.08);
    color: var(--text-primary);
    font-weight: 600;
}

.markdown-body td {
    color: var(--text-secondary);
}

.markdown-body hr {
    border: none;
    border-top: 1px solid var(--card-border);
    margin: 2.5rem 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

.blog-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: transform 0.28s cubic-bezier(0.28, 0.11, 0.32, 1),
                opacity 0.28s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
    box-shadow: var(--card-shadow);
    position: relative;
    will-change: transform;
    contain: paint;
}

.blog-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-tertiary);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-xl);
    z-index: 0;
    will-change: opacity;
}

.blog-card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--card-shadow-hover);
}

.blog-card:hover::before {
    opacity: 0.03;
}

.blog-card-header {
    position: relative;
    height: 180px;
    background: var(--gradient-forest);
    overflow: hidden;
    z-index: 1;
}

.blog-card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".25"/><path d="M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z" opacity=".5"/><path d="M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z"/></svg>') no-repeat center;
    background-size: cover;
    opacity: 0.2;
}

.blog-card-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(0deg, rgba(0,0,0,0.2) 0%, transparent 100%);
}

.blog-card-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.375rem 1rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    font-size: 0.8125rem;
    color: var(--accent-success);
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-weight: 500;
}

.blog-card-date {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    color: rgba(255, 255, 255, 0.95);
    font-size: 0.875rem;
    font-family: var(--font-mono);
    font-weight: 500;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.blog-card-body {
    padding: 1.75rem;
    position: relative;
    z-index: 1;
}

.blog-card-title {
    color: var(--text-primary);
    background: var(--text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.375rem;
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.025em;
}

.blog-card-excerpt {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.01em;
}

.blog-card-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--card-border);
}

.blog-card-platform {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.blog-card-platform::before {
    content: '📝';
}

.blog-card-views {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-left: auto;
}

/* Platforms Section */
.platforms {
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.platforms::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 30%, rgba(8, 145, 178, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(13, 148, 136, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

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

.contact-item {
    background: var(--gradient-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    text-align: center;
    transition: transform 0.28s cubic-bezier(0.28, 0.11, 0.32, 1),
                opacity 0.28s ease;
    text-decoration: none;
    color: var(--text-primary);
    display: block;
    box-shadow: var(--card-shadow);
    position: relative;
    overflow: hidden;
    will-change: transform;
    contain: paint;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-instagram);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-xl);
    z-index: 0;
    will-change: opacity;
}

.contact-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-instagram);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    z-index: 0;
    will-change: transform;
}

.contact-item:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--card-shadow-hover);
}

.contact-item:hover::before {
    opacity: 0.03;
}

.contact-item:hover::after {
    transform: scaleX(1);
}

.contact-item .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    filter: grayscale(0);
    transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    z-index: 1;
    will-change: transform;
}

.contact-item--featured {
    padding: 2.25rem;
}

.contact-item--featured .icon {
    font-size: 3rem;
}

.contact-item--secondary {
    padding: 1.5rem;
}

.contact-item--secondary .icon {
    font-size: 2rem;
}

.contact-item--disabled {
    cursor: default;
    opacity: 0.65;
    pointer-events: none;
}

.contact-item--disabled .placeholder {
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.contact-item:hover .icon {
    transform: scale(1.2) rotate(-8deg);
}

.contact-item .label {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: -0.01em;
    position: relative;
    z-index: 1;
}

/* Business Contact */
.contact-section {
    background: var(--bg-gradient);
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-instagram);
    opacity: 0.03;
    pointer-events: none;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.contact-card {
    background: var(--card-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: transform 0.24s cubic-bezier(0.28, 0.11, 0.32, 1),
                opacity 0.24s ease;
    position: relative;
    overflow: hidden;
    will-change: transform;
    contain: paint;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-instagram);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-xl);
    z-index: 0;
    will-change: opacity;
}

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

.contact-card:hover::before {
    opacity: 0.03;
}

.contact-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
    position: relative;
    z-index: 1;
}

.contact-card h3 {
    color: var(--text-primary);
    background: var(--gradient-instagram);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    font-weight: 600;
    font-size: 1.75rem;
    letter-spacing: -0.03em;
    position: relative;
    z-index: 1;
}

.business-contact .email-link {
    font-size: 1.125rem;
    color: var(--accent-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease, border-color 0.22s ease, color 0.22s ease;
    letter-spacing: -0.01em;
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.12), rgba(6, 182, 212, 0.12));
    border-radius: var(--radius-lg);
    border: 1px solid rgba(8, 145, 178, 0.22);
    position: relative;
    z-index: 1;
}

.business-contact .email-link:hover {
    color: var(--text-primary);
    background: var(--gradient-instagram);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(8, 145, 178, 0.22), 0 0 32px rgba(6, 182, 212, 0.12);
}

/* WeChat QR */
.wechat-contact .qr-container {
    display: inline-block;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--card-border);
    transition: all 0.4s cubic-bezier(0.28, 0.11, 0.32, 1);
    position: relative;
    z-index: 1;
}

.wechat-contact .qr-container:hover {
    transform: scale(1.05);
    box-shadow: var(--card-shadow-hover);
}

.wechat-contact .qr-container img {
    max-width: 180px;
    height: auto;
    display: block;
    border-radius: var(--radius-sm);
}

/* Loading */
.loading {
    text-align: center;
    color: var(--text-tertiary);
    padding: var(--spacing-md);
    animation: loadingPulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

/* Footer */
.footer {
    background: var(--bg-primary);
    padding: 3rem 0 2rem;
    text-align: center;
    border-top: 1px solid var(--card-border);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gradient-instagram), transparent);
    opacity: 0.3;
}

.footer p {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    position: relative;
    z-index: 1;
    margin-top: 2rem;
}

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

/* Loading animation already defined above */

@media (max-width: 1200px) {
    .contact-featured {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .contact-secondary {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .nav {
        gap: 0.25rem;
        flex-wrap: wrap;
    }
    
    .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
    }
    
    .btn-contact {
        width: 100%;
        margin-left: 0;
        margin-top: 0.5rem;
        text-align: center;
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .product-grid,
    .product-grid.products-count-1,
    .product-grid.products-count-2,
    .product-grid.products-count-3,
    .contact-featured,
    .contact-secondary {
        grid-template-columns: 1fr;
        max-width: 100%;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .product-card,
    .article-item {
        padding: 1.75rem;
    }
    
    .article-title {
        font-size: 1.375rem;
    }
    
    .modal-content {
        width: 95%;
        max-width: calc(100% - 32px);
        max-height: 90vh;
        padding: 32px 24px;
        border-radius: 20px;
    }
    
    .modal-header h2 {
        font-size: 1.5rem;
    }
    
    .modal-close {
        top: 16px;
        right: 16px;
        width: 36px;
        height: 36px;
    }
    
    .wechat-modal-content {
        padding: 32px 24px;
    }
    
    .wechat-modal-content h2 {
        font-size: 1.5rem;
    }
    
    .wechat-success-icon {
        font-size: 48px;
    }
    
    .wechat-qr-container {
        margin: 24px 0;
        padding: 16px;
    }
    
    .wechat-qr-container img {
        max-width: 220px;
    }
    
    .modal-body {
        padding: 1.5rem;
    }
    
    .markdown-body h1 {
        font-size: 2rem;
    }
    
    .markdown-body h2 {
        font-size: 1.5rem;
    }
    
    .logo h1 {
        font-size: 1.25rem;
    }
    
    .logo .subtitle {
        font-size: 0.625rem;
    }

    .contact-item--featured,
    .contact-item--secondary {
        padding: 1.5rem;
    }

    .contact-item--featured .icon,
    .contact-item--secondary .icon {
        font-size: 2.25rem;
    }

    .contact-card {
        padding: 2.5rem 1.75rem;
    }

    .contact-icon {
        font-size: 3rem;
    }
}

/* Scrollbar Styling - Modern Premium Style */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-ocean);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-primary);
}

/* Selection Styling */
::selection {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.32), rgba(13, 148, 136, 0.32));
    color: var(--text-primary);
}

::-moz-selection {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.32), rgba(13, 148, 136, 0.32));
    color: var(--text-primary);
}

/* 额外的灵动效果 */
@media (prefers-reduced-motion: no-preference) {
    * {
        scroll-behavior: smooth;
    }
}

/* 微妙的页面进入动画 */
@keyframes pageLoad {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

body {
    animation: pageLoad 0.6s cubic-bezier(0.28, 0.11, 0.32, 1);
}

/* 鼠标悬停时的平滑过渡 */
a, button, .btn, .nav-link, .product-card, .article-item, .contact-item, .blog-card {
    -webkit-tap-highlight-color: transparent;
}

/* Apple风格的输入框焦点效果（如果有） */
input:focus,
textarea:focus,
select:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(8, 145, 178, 0.22);
    border-color: var(--accent-secondary);
}

/* 查看更多按钮样式 */
.view-more-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 32px;
    padding: 20px;
    grid-column: 1 / -1; /* 占据整行 */
}

.view-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: linear-gradient(135deg, #0891b2 0%, #0d9488 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    box-shadow: 0 4px 12px rgba(8, 145, 178, 0.3);
}

.view-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(8, 145, 178, 0.4);
}

/* 文章标签可点击样式 */
.article-tag {
    cursor: pointer;
    transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.article-tag:hover {
    background: linear-gradient(135deg, #0891b2 0%, #0d9488 100%);
    color: white;
    transform: translateY(-2px);
}

/* 模态框样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.24s ease, visibility 0.24s ease;
    padding: 20px;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 24px;
    padding: 48px;
    max-width: 520px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow:
        0 18px 48px rgba(0, 0, 0, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.08);
    transform: scale(0.97) translateY(16px);
    transition: transform 0.26s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.26s ease;
    position: relative;
    border: 1px solid var(--card-border);
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    margin-bottom: 32px;
    text-align: center;
}

.modal-header h2 {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-instagram);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
    line-height: 1.2;
}

.modal-header p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.5;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--bg-secondary);
    border: 2px solid var(--card-border);
    font-size: 24px;
    cursor: pointer;
    color: var(--text-tertiary);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
    font-weight: 300;
    line-height: 1;
}

.modal-close:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    transform: rotate(90deg);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 18px;
    border: 2px solid var(--card-border);
    border-radius: 14px;
    font-size: 1rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    font-family: inherit;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 20px;
    padding-right: 44px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(8, 145, 178, 0.1);
    background: var(--bg-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group small {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.form-required {
    color: #ef4444;
    font-weight: 600;
}

.modal-submit {
    padding: 16px 32px;
    background: var(--gradient-instagram);
    color: white;
    border: none;
    border-radius: 14px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    margin-top: 8px;
    box-shadow: 0 8px 24px rgba(8, 145, 178, 0.3);
}

.modal-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(8, 145, 178, 0.4);
}

.modal-submit:active {
    transform: translateY(0);
}

.modal-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 4px 12px rgba(8, 145, 178, 0.2);
}

/* 微信二维码模态框 */
.wechat-modal-content {
    text-align: center;
    padding: 40px 32px;
    max-width: 480px;
}

.wechat-modal-content h2 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
    background: var(--gradient-instagram);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.wechat-modal-content p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 1rem;
    line-height: 1.6;
}

.wechat-qr-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 32px 0;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: 20px;
    border: 2px solid var(--card-border);
}

.wechat-qr-container img {
    max-width: 260px;
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

.wechat-success-icon {
    font-size: 64px;
    margin-bottom: 20px;
    animation: scaleIn 0.28s cubic-bezier(0.32, 0, 0.4, 1.4);
}

@keyframes scaleIn {
    from {
        transform: scale(0.85);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-ok-btn {
    padding: 14px 40px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    margin-top: 20px;
}

.modal-ok-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
}

@supports not (backdrop-filter: blur(1px)) {
    .header,
    .product-card,
    .article-item,
    .contact-item,
    .blog-card,
    .modal-overlay,
    .modal,
    .modal-content,
    .blog-card-category {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .product-card,
    .article-item,
    .contact-item,
    .blog-card,
    .modal,
    .modal-content,
    .blog-card-category {
        background: var(--card-bg);
    }

    .modal-overlay {
        background: rgba(0, 0, 0, 0.68);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .product-card,
    .article-item,
    .contact-item,
    .blog-card,
    .modal,
    .modal-content {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    .product-card:hover,
    .article-item:hover,
    .contact-item:hover,
    .blog-card:hover,
    .view-more-btn:hover,
    .article-tag:hover,
    .modal-submit:hover,
    .modal-ok-btn:hover {
        transform: none !important;
        box-shadow: none !important;
    }
}

