/* Light Theme - Clean & Professional */
:root {
    --primary: #7C3AED;
    --primary-light: #A78BFA;
    --primary-dark: #5B21B6;
    --primary-soft: rgba(124, 58, 237, 0.08);
    --accent: #06B6D4;
    --accent-orange: #F97316;
    --accent-orange-soft: rgba(249, 115, 22, 0.08);
    
    /* Light Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --surface: #FFFFFF;
    --surface-hover: #F8FAFC;
    
    /* Borders & Shadows */
    --border-light: #E2E8F0;
    --border-medium: #CBD5E1;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.1);
    
    /* Text Colors - Light Theme (Dark on Light) */
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-tertiary: #94A3B8;
    --text-inverse: #FFFFFF;
    
    /* Status Colors */
    --success: #10B981;
    --success-soft: rgba(16, 185, 129, 0.1);
    
    /* Typography */
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing & Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Navigation - Light */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    padding: 0 24px;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu { display: flex; align-items: center; gap: 28px; list-style: none; flex-wrap: nowrap; }

.nav-menu li { flex-shrink: 0; }

.nav-menu a {
    color: var(--text-secondary);
    font-size: 17px;
    font-weight: 600;
    padding: 8px 0;
    position: relative;
    white-space: nowrap;
    flex-shrink: 0;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after { width: 100%; }

.nav-dropdown { position: relative; }

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 12px 0;
    min-width: 140px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
    margin-top: 8px;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.nav-dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

.nav-dropdown-menu a:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 18px;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md), 0 4px 16px rgba(124, 58, 237, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 8px 24px rgba(124, 58, 237, 0.35);
}

.btn-outline {
    background: var(--surface);
    border: 1.5px solid var(--border-medium);
    color: var(--text-primary);
}

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

.btn-orange {
    background: linear-gradient(135deg, var(--accent-orange) 0%, #EA580C 100%);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md), 0 4px 16px rgba(249, 115, 22, 0.25);
}

.btn-orange:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 8px 24px rgba(249, 115, 22, 0.35);
}

/* Hero Section */
.hero {
    min-height: auto;
    display: flex;
    align-items: center;
    padding: 90px 24px 50px;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 10%;
    right: -5%;
    width: 50%;
    height: 70%;
    background: radial-gradient(ellipse, rgba(124, 58, 237, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -10%;
    width: 60%;
    height: 50%;
    background: radial-gradient(ellipse, rgba(6, 182, 212, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--primary-soft);
    border: 1px solid rgba(124, 58, 237, 0.15);
    border-radius: 50px;
    padding: 8px 16px;
    margin-bottom: 20px;
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(15px, 1.8vw, 18px);
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 28px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 48px;
    flex-wrap: wrap;
}

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

.hero-stat-num {
    font-family: var(--font-heading);
    font-size: 40px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.hero-stat-label {
    font-size: 18px;
    color: var(--text-tertiary);
    margin-top: 8px;
    font-weight: 600;
}

/* Section Styles */
.section { padding: 100px 24px; }
.section-alt { background: var(--bg-primary); }
.section-tinted { background: var(--bg-secondary); }

.section-header { text-align: center; margin-bottom: 64px; }

.section-tag {
    display: inline-block;
    background: var(--primary-soft);
    border-radius: 50px;
    padding: 8px 18px;
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(30px, 4vw, 44px);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 18px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Products Grid */
.products-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; max-width: 960px; margin: 0 auto; } .products-grid .product-card { flex: none; display: flex; flex-direction: column; } .products-grid .product-card-body { flex: 1; display: flex; flex-direction: column; } .products-grid .product-features { flex: 1; }
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 32px;
    max-width: 1040px;
    margin: 0 auto;
}

.product-card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: 0;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.06);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: rgba(124, 58, 237, 0.3);
    box-shadow: 0 20px 40px rgba(124, 58, 237, 0.12), 0 8px 16px rgba(124, 58, 237, 0.08);
}

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

.product-card-header {
    padding: 36px 36px 28px;
    background: linear-gradient(165deg, rgba(124, 58, 237, 0.03) 0%, rgba(6, 182, 212, 0.02) 100%);
    border-bottom: 1px solid var(--border-light);
    position: relative;
}

.product-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    font-size: 12px;
    font-weight: 700;
    border-radius: 20px;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.product-card-body {
    padding: 28px 32px 32px;
}

.product-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}

.highlight-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    background: rgba(124, 58, 237, 0.12);
    border: 1px solid rgba(124, 58, 237, 0.35);
    border-radius: 8px;
    font-size: 15px;
    color: #5b21b6;
    font-weight: 700;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.15);
}

.highlight-tag:hover {
    background: rgba(124, 58, 237, 0.18);
    border-color: rgba(124, 58, 237, 0.45);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.2);
}

.highlight-tag-icon {
    font-size: 14px;
}

.product-icon {
    width: 76px;
    height: 76px;
    background: linear-gradient(145deg, var(--primary-soft) 0%, rgba(6, 182, 212, 0.06) 100%);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 38px;
    margin-bottom: 24px;
    box-shadow: 0 8px 24px rgba(124, 58, 237, 0.12);
}

.product-name {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 12px;
    letter-spacing: -0.3px;
}

.product-desc {
    font-size: 18px;
    color: #3a3a4a;
    margin-bottom: 24px;
    line-height: 1.7;
    font-weight: 600;
}

.product-features { list-style: none; margin-bottom: 24px; }

.product-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 11px 0;
    font-size: 16px;
    color: #1a1a2e;
    border-bottom: 1px solid #e5e5e5;
    transition: color 0.2s ease;
    font-weight: 700;
}

.product-features li:last-child { border-bottom: none; }

.product-features li:hover { color: var(--text-primary); }

.product-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: 600;
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    background: rgba(34, 197, 94, 0.12);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 6px;
    padding: 16px 18px;
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.05) 0%, rgba(6, 182, 212, 0.03) 100%);
    border-radius: 12px;
    margin-top: auto;
    border: 1px solid rgba(220, 38, 38, 0.1);
}

.product-price-label {
    font-size: 14px;
    color: #4a4a5a;
    font-weight: 600;
}

.product-price-value {
    font-size: 34px;
    font-weight: 800;
    color: #dc2626;
    letter-spacing: -1px;
}

.product-price-unit {
    font-size: 18px;
    color: #4a4a5a;
    font-weight: 600;
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    position: relative;
    transition: all 0.4s ease;
}

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

.pricing-card.featured {
    border-color: var(--primary);
    border-width: 2px;
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 20px;
    border-radius: 50px;
    letter-spacing: 0.5px;
}

.pricing-product {
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 10px;
}

.pricing-name {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.pricing-target { font-size: 14px; color: var(--text-tertiary); margin-bottom: 28px; }

.pricing-features { list-style: none; margin-bottom: 32px; }

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 18px;
    color: var(--text-secondary);
}

.pricing-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: 600;
    font-size: 13px;
}

.pricing-cta { display: flex; flex-direction: column; gap: 12px; }

/* Demo Section */
.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.demo-card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 48px 36px;
    text-align: center;
    transition: all 0.4s ease;
}

.demo-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

.demo-icon { font-size: 56px; margin-bottom: 24px; }
.demo-name { font-family: var(--font-heading); font-size: 24px; font-weight: 600; margin-bottom: 14px; color: var(--text-primary); }
.demo-desc { font-size: 18px; color: var(--text-secondary); margin-bottom: 28px; line-height: 1.6; }

/* Advantages */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
    max-width: 1040px;
    margin: 0 auto;
}

.advantage-card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 40px 28px;
    text-align: center;
    transition: all 0.4s ease;
}

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

.advantage-icon {
    width: 68px;
    height: 68px;
    background: linear-gradient(135deg, var(--primary-soft) 0%, rgba(6, 182, 212, 0.08) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin: 0 auto 24px;
}

.advantage-title { font-family: var(--font-heading); font-size: 20px; font-weight: 600; margin-bottom: 12px; color: var(--text-primary); }
.advantage-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
    max-width: 1040px;
    margin: 0 auto;
}

.testimonial-card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 36px;
    transition: all 0.3s ease;
}

.testimonial-card:hover { box-shadow: var(--shadow-md); }

.testimonial-content {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
    font-style: italic;
}

.testimonial-author { display: flex; align-items: center; gap: 16px; }

.testimonial-avatar {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary-soft) 0%, rgba(6, 182, 212, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 600;
    color: var(--primary);
}

.testimonial-info h4 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.testimonial-info span { font-size: 14px; color: var(--text-tertiary); }

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
    max-width: 960px;
    margin: 0 auto;
}

.contact-card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 40px 28px;
    text-align: center;
    transition: all 0.4s ease;
}

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

.contact-icon { font-size: 40px; margin-bottom: 18px; }
.contact-title { font-family: var(--font-heading); font-size: 20px; font-weight: 600; margin-bottom: 12px; color: var(--text-primary); }
.contact-value { font-size: 14px; color: var(--text-secondary); margin-bottom: 24px; }

.contact-form {
    max-width: 640px;
    margin: 64px auto 0;
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-lg);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 24px; }
.form-group { text-align: left; }

.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 10px; color: var(--text-primary); }

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 18px;
    font-family: var(--font-body);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--surface);
    box-shadow: 0 0 0 4px var(--primary-soft);
}

.form-group textarea { min-height: 140px; resize: vertical; }
.form-submit { width: 100%; margin-top: 12px; }

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-light);
    padding: 72px 24px 36px;
}

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

.footer-brand {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 18px;
}

.footer-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.8; max-width: 320px; }

.footer-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 20px; }

.footer-links { list-style: none; }
.footer-links li { margin-bottom: 14px; }
.footer-links a { font-size: 14px; color: var(--text-secondary); }
.footer-links a:hover { color: var(--primary); }

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 32px;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright { font-size: 14px; color: var(--text-tertiary); }
.footer-legal { display: flex; gap: 28px; }
.footer-legal a { font-size: 14px; color: var(--text-secondary); }
.footer-legal a:hover { color: var(--primary); }

/* Floating Contact */
.floating-contact { position: fixed; right: 28px; bottom: 28px; z-index: 999; }

.floating-contact-btn {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    cursor: pointer;
    box-shadow: var(--shadow-lg), 0 8px 24px rgba(124, 58, 237, 0.35);
    transition: all 0.3s ease;
    border: none;
}

.floating-contact-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl), 0 12px 32px rgba(124, 58, 237, 0.45);
}

/* Mobile Menu */
.mobile-menu-btn { display: none; font-size: 26px; cursor: pointer; }

/* Responsive */
@media (max-width: 768px) {
    .nav-menu { display: none; }
    .mobile-menu-btn { display: block; }
    .hero-stats { gap: 40px; }
    .hero-stat-num { font-size: 40px; }
    .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
    .form-row { grid-template-columns: 1fr; }
    .section { padding: 72px 20px; }
    .contact-form { padding: 32px 24px; }
    
    /* Product Cards Mobile Responsive */
    .products-grid { 
        grid-template-columns: 1fr !important; 
        gap: 20px !important; 
        padding: 0 4px;
    }
    .product-card {
        margin: 0;
        border-radius: 16px;
    }
    .product-card-header {
        padding: 24px 20px 20px;
    }
    .product-card-body {
        padding: 20px 20px 24px;
    }
    .product-icon {
        width: 60px;
        height: 60px;
        font-size: 30px;
        border-radius: 14px;
    }
    .product-name {
        font-size: 22px;
    }
    .product-desc {
        font-size: 14px;
        line-height: 1.6;
    }
    .highlight-tag {
        font-size: 13px;
        padding: 8px 12px;
    }
    .product-price {
        font-size: 28px;
    }
    .product-price-label {
        font-size: 14px;
    }
    .product-btn {
        padding: 12px 20px;
        font-size: 15px;
    }
    .product-features {
        font-size: 14px;
    }
    .product-features li {
        padding-left: 20px;
        margin-bottom: 8px;
    }
    .product-features li::before {
        width: 6px;
        height: 6px;
        top: 7px;
    }
    
    /* News Grid Mobile */
    .news-grid {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }
    .news-card {
        padding: 20px;
    }
    .news-card-title {
        font-size: 16px;
    }
    .news-card-excerpt {
        font-size: 14px;
    }
    .news-card-date {
        font-size: 12px;
    }
    
    /* Advantages Grid Mobile */
    .advantages-grid {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }
    .advantage-card {
        padding: 24px 20px;
    }
    .advantage-icon {
        font-size: 32px;
        width: 56px;
        height: 56px;
    }
    .advantage-title {
        font-size: 18px;
    }
    .advantage-desc {
        font-size: 14px;
    }
    
    /* Testimonials Grid Mobile */
    .testimonials-grid {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }
    .testimonial-card {
        padding: 24px 20px;
    }
    .testimonial-content {
        font-size: 14px;
    }
    .testimonial-avatar {
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
    .testimonial-info h4 {
        font-size: 15px;
    }
    .testimonial-info span {
        font-size: 13px;
    }
    
    /* FAQ Mobile */
    .faq-list {
        padding: 0;
    }
    .faq-item {
        padding: 16px 0;
    }
    .faq-question {
        font-size: 15px;
        padding-right: 36px;
    }
    .faq-question::after {
        width: 24px;
        height: 24px;
        font-size: 18px;
    }
    .faq-answer {
        font-size: 14px;
        padding: 12px 0;
    }
    
    /* Contact Grid Mobile */
    .contact-grid {
        grid-template-columns: 1fr !important;
        gap: 24px;
    }
    .contact-info {
        padding: 24px;
    }
    .contact-info h3 {
        font-size: 22px;
    }
    .contact-item {
        font-size: 14px;
        margin-bottom: 12px;
    }
    .contact-form {
        padding: 24px 20px;
    }
    .form-input {
        padding: 12px 14px;
        font-size: 15px;
    }
    textarea.form-input {
        min-height: 100px;
    }
    
    /* Demo/Trial Section Mobile */
    .demo-content {
        padding: 24px 20px;
    }
    .demo-title {
        font-size: 28px;
    }
    .demo-desc {
        font-size: 15px;
    }
    .demo-form {
        flex-direction: column;
        gap: 12px;
    }
    .demo-form input {
        width: 100%;
        min-width: unset;
    }
    .demo-form button {
        width: 100%;
    }
    
    /* About Section Mobile */
    .about-content {
        padding: 24px 20px;
    }
    .about-content h2 {
        font-size: 26px;
    }
    .about-content p {
        font-size: 15px;
    }
    .about-stats {
        flex-direction: column;
        gap: 16px;
    }
    .about-stat {
        padding: 16px;
    }
    .about-stat-num {
        font-size: 28px;
    }
    .about-stat-label {
        font-size: 14px;
    }
    
    /* Footer Mobile */
    .footer {
        padding: 48px 20px 24px;
    }
    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-brand {
        font-size: 18px;
    }
    .footer-desc {
        font-size: 14px;
    }
    .footer-title {
        font-size: 15px;
    }
    .footer-links a {
        font-size: 14px;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    .footer-copyright {
        font-size: 13px;
    }
    .footer-legal {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    .footer-legal a {
        font-size: 13px;
    }
    
    /* General Mobile Adjustments */
    .section-title {
        font-size: 26px;
        margin-bottom: 12px;
    }
    .section-subtitle {
        font-size: 15px;
    }
    .section-header {
        margin-bottom: 32px;
    }
}

/* News Section */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.news-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

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

.news-card-category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-soft);
    color: var(--primary);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
    width: fit-content;
}

.news-card-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
    flex-grow: 1;
}

.news-card-title a {
    color: inherit;
    transition: color 0.3s ease;
}

.news-card-title a:hover {
    color: var(--primary);
}

.news-card-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 12px;
    color: var(--text-tertiary);
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

.news-card-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.news-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
}

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


/* Loading state for products */
.loading-products {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #666;
}
.loading-products p {
    margin-top: 16px;
    font-size: 16px;
}

/* QR Modal - 底部抽屉式 */
.hx-qr-overlay {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.5);
}
.hx-qr-box {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10001;
    background-color: #fff;
    padding: 30px 24px 36px;
    border-radius: 16px 16px 0 0;
    text-align: center;
    box-shadow: 0 -4px 24px rgba(0,0,0,0.15);
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.hx-qr-box.hx-qr-show {
    transform: translateY(0);
}
.hx-qr-box img { width: 200px; height: 200px; margin: 16px auto; display: block; }
.hx-qr-box h3 { margin: 8px 0 4px; font-size: 18px; }
.hx-qr-box p { margin: 0; color: #666; font-size: 14px; }
.hx-qr-close { position: absolute; right: 12px; top: 8px; font-size: 24px; font-weight: bold; color: #999; cursor: pointer; }
.hx-qr-close:hover { color: #333; }

/* ===== 创业招商新增样式 ===== */
.model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 8px; }
.model-card { background: #fff; border: 1px solid var(--border-light); border-radius: 16px; padding: 28px 24px; position: relative; overflow: hidden; transition: all .3s ease; }
.model-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.model-card .model-step { position: absolute; top: 16px; right: 20px; font-size: 13px; font-weight: 700; color: var(--primary-soft); letter-spacing: 1px; }
.model-card .model-icon { width: 56px; height: 56px; border-radius: 14px; background: linear-gradient(145deg, var(--primary-soft), transparent); display: flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: 16px; }
.model-card h3 { font-size: 18px; font-weight: 700; color: var(--text-primary); margin-bottom: 10px; }
.model-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 14px; }
.model-card .model-tag { display: inline-block; background: var(--primary-soft); color: var(--primary-dark); font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; margin: 2px 4px 2px 0; }
.model-card .model-arrow { color: var(--primary); font-weight: 600; font-size: 14px; }
.path-flow { display: flex; align-items: stretch; gap: 0; flex-wrap: wrap; margin: 28px 0 6px; }
.path-step { flex: 1; min-width: 150px; background: #fff; border: 1px solid var(--border-light); border-radius: 12px; padding: 18px 16px; text-align: center; position: relative; }
.path-step .pnum { width: 28px; height: 28px; border-radius: 50%; background: var(--primary); color: #fff; font-size: 14px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; margin-bottom: 8px; }
.path-step .ptitle { font-weight: 700; color: var(--text-primary); font-size: 14px; margin-bottom: 4px; }
.path-step .pdesc { font-size: 12.5px; color: var(--text-secondary); line-height: 1.6; }
.path-arrow { display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--primary); padding: 0 6px; }
.partner-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 8px; }
.partner-card { background: #fff; border: 1px solid var(--border-light); border-radius: 16px; padding: 26px 24px; transition: all .3s ease; position: relative; }
.partner-card:hover { border-color: var(--accent); box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.partner-card.popular { border: 2px solid var(--primary); }
.partner-card .popular-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 14px; border-radius: 999px; white-space: nowrap; }
.partner-card h3 { font-size: 17px; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.partner-card .pprice { font-size: 26px; font-weight: 800; color: var(--primary); margin: 8px 0 2px; }
.partner-card .pprice small { font-size: 13px; font-weight: 500; color: var(--text-tertiary); }
.partner-card .pdesc { font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 14px; }
.partner-card ul { list-style: none; padding: 0; margin: 0 0 18px; }
.partner-card li { font-size: 13px; color: var(--text-secondary); padding: 5px 0 5px 22px; position: relative; }
.partner-card li::before { content: '✓'; position: absolute; left: 0; color: var(--primary); font-weight: 700; }
.earn-banner { background: linear-gradient(135deg, var(--primary) 0%, #6D28D9 60%, var(--accent) 100%); border-radius: 16px; padding: 30px 34px; color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-top: 10px; }
.earn-banner h3 { font-size: 20px; margin: 0 0 6px; color: #fff; }
.earn-banner p { margin: 0; font-size: 14px; opacity: .92; line-height: 1.7; }
.earn-banner .btn { background: #fff; color: var(--primary-dark); font-weight: 700; }
.earn-banner .btn:hover { background: #f3f0ff; }
@media (max-width: 800px) {
  .model-grid, .partner-grid { grid-template-columns: 1fr; }
  .path-flow { flex-direction: column; gap: 8px; }
  .path-arrow { transform: rotate(90deg); padding: 2px 0; }
}