/* Root Variables */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --warning-color: #f6ad55;
    --danger-color: #f56565;
    --info-color: #4299e1;

    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-tertiary: #edf2f7;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-tertiary: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    --whatsapp: #25d366;
    --telegram: #0088cc;
    --facebook: #1877f2;
    --chatgpt: #74aa9c;
    --instagram: #e4405f;
    --tiktok: #000000;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252542;
    --text-primary: #f7fafc;
    --text-secondary: #cbd5e0;
    --text-tertiary: #a0aec0;
    --border-color: #2d3748;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(var(--bg-primary), 0.95);
}

.navbar {
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

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

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-channel {
    text-align: center;
    line-height: 1.2;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 60px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Theme Toggle */
.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    transition: background 0.3s ease;
    color: var(--text-primary);
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
}

.sun-icon,
.moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

/* Language Selector */
.lang-select {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.lang-select:hover {
    border-color: var(--primary-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

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

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

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
    opacity: 0.1;
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInLeft 1s ease;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

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

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

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-bottom: 2rem;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.promo-code {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 0.5rem;
    font-size: 0.875rem;
}

.code-highlight {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 1.125rem;
}

.hero-image {
    animation: fadeInRight 1s ease;
}

.hero-image-wrapper {
    position: relative;
}

.floating-card {
    position: absolute;
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: -10%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 10%;
    left: 10%;
    animation-delay: 2s;
}

.card-icon {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(102, 126, 234, 0.1);
    margin-bottom: 0.5rem;
}

.card-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary-color);
}

.card-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.dashboard-preview {
    width: 100%;
    height: auto;
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
}

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

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(102, 126, 234, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

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

/* Platforms Section */
.platforms {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2rem;
    padding: 3rem 0;
}

.platform-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    animation: fadeInUp 0.6s ease backwards;
}

.platform-card:nth-child(1) { animation-delay: 0.05s; }
.platform-card:nth-child(2) { animation-delay: 0.1s; }
.platform-card:nth-child(3) { animation-delay: 0.15s; }
.platform-card:nth-child(4) { animation-delay: 0.2s; }
.platform-card:nth-child(5) { animation-delay: 0.25s; }
.platform-card:nth-child(6) { animation-delay: 0.3s; }
.platform-card:nth-child(7) { animation-delay: 0.35s; }
.platform-card:nth-child(8) { animation-delay: 0.4s; }
.platform-card:nth-child(9) { animation-delay: 0.45s; }
.platform-card:nth-child(10) { animation-delay: 0.5s; }
.platform-card:nth-child(11) { animation-delay: 0.55s; }
.platform-card:nth-child(12) { animation-delay: 0.6s; }
.platform-card:nth-child(13) { animation-delay: 0.65s; }
.platform-card:nth-child(14) { animation-delay: 0.7s; }

.platform-card:hover {
    transform: translateY(-15px) scale(1.15);
}

.platform-card:hover .platform-icon {
    animation: pulse 1.5s infinite;
}

.platform-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    background: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.platform-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
    transition: left 0.5s;
}

.platform-icon:hover::before {
    left: 100%;
}

.platform-card:hover .platform-icon {
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
    transform: rotate(5deg) scale(1.05);
}

.platform-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    border-radius: 10px;
}

.platform-icon.whatsapp {
    background: linear-gradient(135deg, #25d366, #128c7e);
}

.platform-icon.telegram {
    background: linear-gradient(135deg, #2aabee, #0088cc);
}

.platform-icon.facebook {
    background: linear-gradient(135deg, #1877f2, #0c5bb6);
}

.platform-icon.chatgpt {
    background: linear-gradient(135deg, #74aa9c, #519a86);
}

.platform-icon.line {
    background: linear-gradient(135deg, #00c300, #00b900);
}

.platform-icon.messenger {
    background: linear-gradient(135deg, #0084ff, #006cff);
}

.platform-icon.tiktok {
    background: #000000;
}

.platform-icon.skype {
    background: linear-gradient(135deg, #00aff0, #0078d4);
}

.platform-icon.instagram {
    background: linear-gradient(135deg, #833ab4, #fd1d1d, #fcb045);
}

.platform-icon.zalo {
    background: linear-gradient(135deg, #0180c7, #0068ff);
}

.platform-icon.perplexity {
    background: linear-gradient(135deg, #20b4d8, #1a9ac0);
}

.platform-icon.google-voice {
    background: linear-gradient(135deg, #4285f4, #34a853);
}

.platform-icon.duck {
    background: linear-gradient(135deg, #de5833, #d75631);
}

.platform-icon.chrome {
    background: linear-gradient(135deg, #4285f4, #34a853, #fbbc05, #ea4335);
}

.platform-card h3 {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin: 0;
}

@media (max-width: 1200px) {
    .platforms-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 768px) {
    .platforms-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }

    .platform-icon {
        width: 70px;
        height: 70px;
    }

    .platform-icon img {
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .platforms-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .platform-icon {
        width: 60px;
        height: 60px;
    }

    .platform-icon img {
        width: 35px;
        height: 35px;
    }
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-secondary);
    border-radius: 1rem;
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

/* Pricing Section */
.pricing {
    padding: 5rem 0;
    background: #f5f5f7;
}

.kt-badge {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b6b, #feca57);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin-top: 3rem;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.pricing-card {
    padding: 3rem 2.5rem;
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card.basic {
    background: #4d7fff;
    color: white;
}

.pricing-card.professional {
    background: #ff5757;
    color: white;
}

.pricing-card.unlimited {
    background: #9b59ff;
    color: white;
}

.popular-badge {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background: #ffc107;
    color: #333;
    padding: 0.25rem 1.5rem;
    border-radius: 0 0 1rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.pricing-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
}

.pricing-subtitle {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
    font-weight: 400;
}

.price-wrapper {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.currency {
    font-size: 1.75rem;
    color: white;
    font-weight: 500;
}

.amount {
    font-size: 4rem;
    font-weight: 700;
    color: white;
    line-height: 1;
}

.period {
    font-size: 1rem;
    color: white;
    opacity: 0.9;
    margin-left: 0.25rem;
}

.pricing-features-wrapper {
    flex: 1;
}

.features-label {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: white;
    opacity: 0.9;
}

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

.pricing-features li {
    padding: 0.6rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: white;
}

.pricing-features .check {
    color: #4cff69;
    font-weight: 700;
    font-size: 1.125rem;
}

.pricing-features .cross {
    font-size: 0.9rem;
    opacity: 0.7;
}

.btn-select-plan {
    width: 100%;
    padding: 1.2rem;
    background: white;
    color: #4d7fff;
    border: none;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    text-decoration: none;
    display: block;
}

.btn-select-plan:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.btn-select-plan.btn-red {
    color: #ff5757;
}

.btn-select-plan.btn-purple {
    color: #9b59ff;
}

/* Download Section */
.download {
    padding: 5rem 0;
    background: var(--bg-primary);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 360px));
    gap: 2rem;
    margin-top: 3rem;
    justify-content: center;
    justify-items: center;
}

.download-card {
    background: var(--bg-secondary);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.download-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-icon.windows {
    color: #0078d4;
}

.download-icon.mac {
    color: #333333;
}

.download-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.download-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.download-btn {
    margin-bottom: 0.5rem;
}

.file-size {
    display: block;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
}

.download-notice {
    text-align: center;
    margin-top: 2rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 0.5rem;
}

/* Testimonials Section */
.testimonials {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: var(--bg-primary);
    border-radius: 1rem;
    padding: 2rem;
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.testimonial-rating {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.testimonial-content {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.author-info h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.author-info p {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* CTA Section */
.cta {
    padding: 5rem 0;
    background: var(--bg-primary);
    color: var(--text-primary);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.cta-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.cta-description code {
    background: var(--bg-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

.cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Footer */
.footer {
    background: var(--bg-tertiary);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

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

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--primary-color);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-column p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu,
    .nav-actions {
        display: none;
    }

    .nav-menu.mobile-active,
    .nav-actions.mobile-active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-actions {
        flex-direction: column;
    }

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

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .pricing-card.basic,
    .pricing-card.professional,
    .pricing-card.unlimited {
        border-radius: 1rem;
    }

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

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Core Advantages Section */
.core-advantages {
    padding: 80px 0;
    background: #f8f9fa;
}

/* Features Grid - 4 cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin: 60px 0;
}

.feature-card {
    padding: 35px 25px;
    border-radius: 20px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.feature-card.card-pink {
    background: linear-gradient(135deg, #fce7f3 0%, #fee5ff 100%);
}

.feature-card.card-yellow {
    background: linear-gradient(135deg, #fef3c7 0%, #fffbeb 100%);
}

.feature-card.card-mint {
    background: linear-gradient(135deg, #d1fae5 0%, #ecfdf5 100%);
}

.feature-card.card-orange {
    background: linear-gradient(135deg, #ff6b35 0%, #ff8f65 100%);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.feature-card.highlighted {
    color: white;
}

.feature-card.highlighted h3,
.feature-card.highlighted p {
    color: white;
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: #1a202c;
    line-height: 1.3;
}

.feature-card p {
    font-size: 0.9rem;
    color: #4a5568;
    line-height: 1.5;
}

.feature-card.highlighted h3 {
    color: white;
}

.feature-card.highlighted p {
    color: rgba(255,255,255,0.95);
}

/* Core Features Section */
.core-features-section {
    margin: 70px 0 50px;
}

.features-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    color: #1a202c;
}

.features-subtitle {
    text-align: center;
    color: #718096;
    margin-bottom: 45px;
    font-size: 1rem;
}

.core-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.core-feature-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.core-feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.feature-icon-wrapper {
    width: 45px;
    height: 45px;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.core-feature-card h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: #1a202c;
}

.core-feature-card p {
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 18px;
    font-size: 0.95rem;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: #6b7280;
    padding: 6px 14px;
    background: #f3f4f6;
    border-radius: 15px;
}

/* Usage Stats */
.usage-stats {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    border-radius: 24px;
    padding: 50px;
    margin-top: 50px;
    text-align: center;
    color: white;
}

.stats-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.stats-subtitle {
    font-size: 1.05rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

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

.stat-number {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 1rem;
    margin-bottom: 4px;
    opacity: 0.95;
}

.stat-desc {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* KT Details Section */
.kt-details {
    padding: 100px 0;
    background: var(--bg-primary);
}

.kt-details-header {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 60px;
}

.kt-details-header .badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.kt-details-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.kt-details-header p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    text-align: left;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
}

.kt-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
}

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

.stat-item .stat-value {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #ff5722, #ff7043);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

.stat-item .stat-label {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Global Enterprise Section */
.global-enterprise {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.global-enterprise .badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.global-enterprise h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: var(--text-primary);
}

.enterprise-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.enterprise-image {
    position: relative;
}

.mockup-container {
    width: 100%;
    max-width: 600px;
}

.mockup-window {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    overflow: hidden;
}

.window-header {
    background: #f3f4f6;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid #e5e7eb;
}

.window-controls {
    display: flex;
    gap: 8px;
}

.control-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: block;
}

.control-dot.red { background: #ef4444; }
.control-dot.yellow { background: #f59e0b; }
.control-dot.green { background: #10b981; }

.window-title {
    font-size: 0.9rem;
    color: #6b7280;
}

.window-content {
    display: flex;
    height: 400px;
    background: #fafafa;
}

.sidebar-mock {
    width: 80px;
    background: #fff;
    border-right: 1px solid #e5e7eb;
    padding: 20px 10px;
}

.sidebar-icons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

.sidebar-icons img {
    width: 35px;
    height: 35px;
    padding: 5px;
    border-radius: 8px;
    transition: background 0.3s;
}

.sidebar-icons img:hover {
    background: #f3f4f6;
}

.chat-mock {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.chat-header {
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e5e7eb;
}

.chat-messages {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 12px;
    position: relative;
}

.message.received {
    background: #667eea;
    color: white;
    align-self: flex-start;
}

.message.sent {
    background: #10b981;
    color: white;
    align-self: flex-end;
}

.message-label {
    font-size: 0.95rem;
}

.phone-mockup {
    width: 150px;
    background: #1f2937;
    border-left: 1px solid #e5e7eb;
    padding: 20px;
}

.phone-screen {
    background: white;
    border-radius: 12px;
    height: 100%;
    padding: 10px;
}

.phone-header {
    font-size: 0.8rem;
    color: #6b7280;
    text-align: center;
    padding: 5px;
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 10px;
}

.phone-content {
    height: calc(100% - 40px);
    background: #f9fafb;
    border-radius: 8px;
}

.enterprise-features {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.feature-item {
    display: flex;
    gap: 20px;
}

.feature-item .feature-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-radius: 15px;
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.feature-item p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Responsive adjustments for new sections */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .core-features {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .usage-stats {
        padding: 40px 25px;
    }

    .feature-card {
        padding: 30px 20px;
    }

    .core-feature-card {
        padding: 25px;
    }

    .kt-stats {
        flex-direction: column;
        gap: 40px;
    }

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

    .interface-badges {
        position: static;
        margin-top: 20px;
        flex-direction: row;
        flex-wrap: wrap;
    }
}

/* AI Feature Icons */
.ai-feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}


/* AI Features Section */
.ai-features {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.ai-features .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.ai-features .section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ai-features .section-subtitle {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 15px;
    font-weight: 500;
}

.ai-features .section-info {
    font-size: 1rem;
    color: var(--text-secondary);
    background: var(--bg-primary);
    padding: 15px 30px;
    border-radius: 30px;
    display: inline-block;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.ai-overview {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: 20px;
    margin-bottom: 60px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.ai-overview h3 {
    font-size: 1.75rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.ai-overview p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.ai-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 15px;
    margin-bottom: 60px;
    max-width: 960px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 15px;
}

.ai-feature-card {
    background: transparent;
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
    min-height: 220px;
}

.ai-feature-card:hover {
    transform: translateY(-2px);
}

.ai-feature-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: inline-block;
}

.ai-feature-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #2c3e50;
    text-align: left;
}

.ai-feature-card ul {
    list-style: none;
    padding: 0;
}

.ai-feature-card li {
    padding: 5px 0;
    color: #6b7280;
    font-size: 0.85rem;
    line-height: 1.4;
    position: relative;
    padding-left: 18px;
}

.ai-feature-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.ai-summary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 50px;
    border-radius: 20px;
    text-align: center;
}

.ai-summary h3 {
    font-size: 1.75rem;
    margin-bottom: 20px;
}

.ai-summary p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 15px;
}

.ai-summary strong {
    color: #fbbf24;
    font-weight: 600;
}


/* Responsive adjustments for AI features */
@media (max-width: 992px) {
    .ai-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .ai-features-grid {
        grid-template-columns: 1fr;
    }

    .ai-features .section-title {
        font-size: 1.75rem;
    }

    .ai-summary {
        padding: 30px;
    }
}/* 深色主题完整修复 */

/* 按钮修复 */
[data-theme="dark"] .btn-white {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .btn-white:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

[data-theme="dark"] .btn-outline-white {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--text-secondary);
}

[data-theme="dark"] .btn-outline-white:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

/* 价格卡片修复 */
[data-theme="dark"] .pricing-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .pricing-card:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-color);
}

[data-theme="dark"] .pricing-card .plan-title {
    color: var(--text-primary);
}

[data-theme="dark"] .pricing-card .plan-price {
    color: var(--primary-color);
}

[data-theme="dark"] .pricing-card .plan-features li {
    color: var(--text-secondary);
}

/* 功能卡片修复 */
[data-theme="dark"] .feature-card {
    background: var(--bg-secondary);
}

[data-theme="dark"] .feature-card:hover {
    background: var(--bg-tertiary);
}

/* 核心功能卡片修复 */
[data-theme="dark"] .core-feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .core-feature-card:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-color);
}

/* AI功能卡片修复 */
[data-theme="dark"] .ai-feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .ai-feature-card:hover {
    background: var(--bg-tertiary);
}

/* 评价卡片修复 */
[data-theme="dark"] .testimonial-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .testimonial-card:hover {
    background: var(--bg-tertiary);
}

/* 下载卡片修复 */
[data-theme="dark"] .download-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .download-card:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-color);
}

/* 平台卡片修复 */
[data-theme="dark"] .platform-card {
    background: var(--bg-secondary);
}

[data-theme="dark"] .platform-card:hover {
    background: var(--bg-tertiary);
}

/* 图标容器修复 */
[data-theme="dark"] .icon-wrapper {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .icon-bg {
    background: var(--bg-secondary);
}

/* Mockup窗口修复 */
[data-theme="dark"] .mockup-window {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .mockup-header {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .phone-screen {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .sidebar-mock {
    background: var(--bg-tertiary);
    border-right: 1px solid var(--border-color);
}

/* 章节背景修复 */
[data-theme="dark"] .section {
    background: var(--bg-primary);
}

[data-theme="dark"] .section:nth-child(even) {
    background: var(--bg-secondary);
}

/* 表单元素修复 */
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus {
    background: var(--bg-tertiary);
    border-color: var(--primary-color);
}

/* 弹窗修复 */
[data-theme="dark"] .modal-content {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-header {
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .modal-footer {
    border-top: 1px solid var(--border-color);
}

/* 下拉菜单修复 */
[data-theme="dark"] .dropdown-menu {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

/* 导航栏修复 */
[data-theme="dark"] .navbar {
    background: var(--bg-secondary);
}

[data-theme="dark"] .nav-link {
    color: var(--text-secondary);
}

[data-theme="dark"] .nav-link:hover {
    color: var(--text-primary);
}

/* 徽章和标签修复 */
[data-theme="dark"] .badge {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .tag {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* 统计卡片修复 */
[data-theme="dark"] .stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .stat-number {
    color: var(--primary-color);
}

/* 特征列表修复 */
[data-theme="dark"] .feature-list-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .feature-list-item:hover {
    background: var(--bg-tertiary);
}

/* 代码块修复 */
[data-theme="dark"] .code-block,
[data-theme="dark"] code {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* 表格修复 */
[data-theme="dark"] table {
    background: var(--bg-secondary);
}

[data-theme="dark"] th {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] td {
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] tr:hover {
    background: var(--bg-tertiary);
}

/* 其他白色背景元素修复 */
[data-theme="dark"] .bg-white,
[data-theme="dark"] .background-white {
    background: var(--bg-secondary) !important;
}

/* 确保所有卡片在深色模式下正确显示 */
[data-theme="dark"] [class*="card"] {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] [class*="card"]:hover {
    background: var(--bg-tertiary);
}

/* 修复可能遗漏的白色元素 */
[data-theme="dark"] *[style*="background: white"],
[data-theme="dark"] *[style*="background-color: white"],
[data-theme="dark"] *[style*="background:#fff"],
[data-theme="dark"] *[style*="background-color:#fff"] {
    background: var(--bg-secondary) !important;
}

/* 平台图标特殊修复 */
[data-theme="dark"] .platform-icon {
    background: var(--bg-tertiary) !important;
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .platform-icon.whatsapp,
[data-theme="dark"] .platform-icon.telegram,
[data-theme="dark"] .platform-icon.facebook,
[data-theme="dark"] .platform-icon.chatgpt,
[data-theme="dark"] .platform-icon.line,
[data-theme="dark"] .platform-icon.messenger,
[data-theme="dark"] .platform-icon.tiktok,
[data-theme="dark"] .platform-icon.skype,
[data-theme="dark"] .platform-icon.instagram,
[data-theme="dark"] .platform-icon.zalo,
[data-theme="dark"] .platform-icon.perplexity,
[data-theme="dark"] .platform-icon.google-voice,
[data-theme="dark"] .platform-icon.duck,
[data-theme="dark"] .platform-icon.chrome {
    opacity: 0.95;
}

/* 价格卡片按钮修复 */
[data-theme="dark"] .btn-select-plan {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .btn-select-plan:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
}

/* 窗口内容区域修复 */
[data-theme="dark"] .window-content {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .window-header {
    background: var(--bg-secondary);
}

/* 聊天消息修复 */
[data-theme="dark"] .message.received,
[data-theme="dark"] .message.sent {
    opacity: 0.9;
}

/* 特色卡片背景修复 */
[data-theme="dark"] .feature-card.card-pink,
[data-theme="dark"] .feature-card.card-yellow,
[data-theme="dark"] .feature-card.card-mint,
[data-theme="dark"] .feature-card.card-orange {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .feature-card.highlighted {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

/* AI功能卡片文字颜色修复 */
[data-theme="dark"] .ai-feature-card h4 {
    color: var(--text-primary);
}

[data-theme="dark"] .ai-feature-card li {
    color: var(--text-secondary);
}

/* 价格章节背景修复 */
[data-theme="dark"] .pricing {
    background: var(--bg-secondary);
}

/* 核心优势章节背景修复 */
[data-theme="dark"] .core-advantages {
    background: var(--bg-tertiary);
}

/* 全局企业章节背景修复 */
[data-theme="dark"] .global-enterprise {
    background: var(--bg-secondary);
}

/* AI功能章节背景修复 */
[data-theme="dark"] .ai-features {
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

/* AI概览卡片修复 */
[data-theme="dark"] .ai-overview {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

/* 使用统计卡片修复 */
[data-theme="dark"] .usage-stats {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0.95;
}

/* 特征标签修复 */
[data-theme="dark"] .feature-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

/* 聊天模拟区域修复 */
[data-theme="dark"] .chat-mock {
    background: var(--bg-tertiary);
}

/* 手机模拟区域修复 */
[data-theme="dark"] .phone-mockup {
    background: var(--bg-secondary);
}

[data-theme="dark"] .phone-content {
    background: var(--bg-tertiary);
}

/* 企业功能图标背景修复 */
[data-theme="dark"] .feature-item .feature-icon {
    background: var(--bg-secondary);
}

/* 浮动卡片修复 */
[data-theme="dark"] .floating-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.seo-panel .section-header {
    text-align: center;
    margin-bottom: 40px;
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.seo-card {
    background: var(--surface-strong);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
}

.seo-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.seo-card p,
.seo-card li {
    color: var(--text-secondary);
    line-height: 1.7;
}

.seo-card ul {
    padding-left: 18px;
    margin: 0;
}