/* ============================================
   V2Ray.pw - Landing Page Styles
   ============================================ */

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

:root {
    /* Colors */
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;
    --secondary-color: #10B981;
    --accent-color: #F59E0B;
    --text-dark: #1F2937;
    --text-light: #6B7280;
    --bg-light: #F9FAFB;
    --bg-white: #FFFFFF;
    --border-color: #E5E7EB;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
}

/* === Header & Navigation === */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-icon {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background: var(--bg-light);
    color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* === Hero Section === */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-title .highlight {
    color: #FCD34D;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #FCD34D;
    display: block;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* === Buttons === */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    line-height: 1.5;
}

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

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

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-mega {
    padding: 1.25rem 2.5rem;
    font-size: 1.25rem;
}

/* Pulse Animation */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.pulse {
    animation: pulse 2s infinite;
}

.pulse:hover {
    animation: none;
}

/* === Sections === */
section {
    padding: var(--spacing-2xl) 0;
}

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

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* === Features Section === */
.features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    text-align: center;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.feature-title {
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.feature-text {
    color: var(--text-light);
    line-height: 1.7;
}

/* === Steps Section === */
.steps {
    display: flex;
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
    justify-content: center;
}

.step {
    flex: 1;
    min-width: 280px;
    max-width: 350px;
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
    box-shadow: var(--shadow-lg);
}

.step-title {
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.step-text {
    color: var(--text-light);
}

/* === CTA Sections === */
.cta-center {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.final-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-2xl) 0;
}

.cta-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: 1rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.cta-title {
    color: white;
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.cta-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

.cta-note {
    margin-top: var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* === Platforms Section === */
.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.platform-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.platform-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.platform-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.platform-name {
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.platform-text {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.platform-link {
    color: var(--primary-color);
    font-weight: 600;
}

/* === Keywords Section === */
.keywords-section {
    background: var(--bg-white);
}

.content-text {
    max-width: 900px;
    margin: 0 auto;
}

.content-text h3 {
    margin-top: var(--spacing-xl);
    color: var(--text-dark);
}

.content-text ul {
    margin: var(--spacing-md) 0;
}

.feature-list {
    list-style: none;
    padding-left: 0;
}

.feature-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-light);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

/* === FAQ Section === */
.faq-preview {
    background: var(--bg-light);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.faq-answer {
    color: var(--text-light);
    line-height: 1.7;
}

/* === Footer === */
.footer {
    background: var(--text-dark);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-title {
    color: white;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-heading {
    color: white;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

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

.footer-keywords {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
    line-height: 1.6;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* === Page Hero === */
.page-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.page-title {
    color: white;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

/* === Keys Page Specific === */
.keys-cta {
    padding: var(--spacing-2xl) 0;
}

.cta-card-large {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: var(--spacing-xl);
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
    text-align: center;
    border: 3px solid var(--primary-color);
}

.cta-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.cta-heading {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.cta-description {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.cta-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    justify-content: center;
}

.benefit-icon {
    color: var(--success-color);
    font-size: 1.2rem;
}

.benefit-text {
    color: var(--text-dark);
    font-size: 0.9rem;
}

/* === Step Guide === */
.steps-detailed {
    max-width: 900px;
    margin: 0 auto;
}

.step-detailed {
    background: white;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-color);
}

.step-header {
    margin-bottom: var(--spacing-md);
}

.step-num {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.step-heading {
    color: var(--text-dark);
    font-size: 1.5rem;
}

.step-desc {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

.step-code {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    font-family: 'Courier New', monospace;
    margin: var(--spacing-md) 0;
    overflow-x: auto;
}

.step-list {
    margin-left: var(--spacing-lg);
    color: var(--text-light);
}

.step-list li {
    margin-bottom: var(--spacing-xs);
}

.step-tip {
    background: #FEF3C7;
    border-left: 4px solid var(--warning-color);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    margin-top: var(--spacing-md);
    color: var(--text-dark);
}

/* === What You Get === */
.feature-card-icon {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

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

.feature-icon-large {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
    text-align: center;
}

/* === Config Types === */
.config-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.config-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.config-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-xl);
}

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

.config-name {
    color: var(--text-dark);
    font-size: 1.3rem;
}

.config-badge {
    background: var(--bg-light);
    color: var(--text-light);
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.8rem;
    font-weight: 600;
}

.config-badge.recommended {
    background: var(--success-color);
    color: white;
}

.config-description {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.config-features {
    list-style: none;
}

.config-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-light);
}

/* === Setup Page === */
.quick-links {
    background: var(--bg-light);
    padding: var(--spacing-lg) 0;
}

.quick-nav {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.quick-link {
    background: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 2rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    color: var(--text-dark);
    font-weight: 500;
}

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

.setup-section {
    padding: var(--spacing-2xl) 0;
}

.setup-section.alt {
    background: var(--bg-light);
}

.platform-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.platform-icon-big {
    font-size: 5rem;
}

.platform-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.platform-desc {
    color: var(--text-light);
    font-size: 1.1rem;
}

.setup-content {
    max-width: 900px;
    margin: 0 auto;
}

.setup-step {
    margin-bottom: var(--spacing-xl);
}

.setup-heading {
    color: var(--text-dark);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.setup-list {
    margin-left: var(--spacing-lg);
    color: var(--text-light);
}

.setup-list li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.setup-note {
    background: #EFF6FF;
    border-left: 4px solid var(--primary-color);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: 0.5rem;
    color: var(--text-dark);
}

.download-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    margin: var(--spacing-md) 0;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.download-info strong {
    display: block;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.download-version {
    color: var(--text-light);
    font-size: 0.9rem;
}

.code-box {
    background: var(--text-dark);
    color: #10B981;
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    font-family: 'Courier New', monospace;
    margin: var(--spacing-md) 0;
    overflow-x: auto;
}

.success-box {
    background: #D1FAE5;
    border-left: 4px solid var(--success-color);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    color: var(--text-dark);
    margin-top: var(--spacing-xl);
}

.modes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.mode-card {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    text-align: center;
}

.mode-name {
    color: var(--text-dark);
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.mode-desc {
    color: var(--text-light);
    font-size: 0.85rem;
}

.subheading {
    color: var(--text-dark);
    font-size: 1.1rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.app-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.app-name {
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.app-desc {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.app-note {
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 600;
}

/* === Tips Section === */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.tip-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all 0.3s ease;
}

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

.tip-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.tip-title {
    color: var(--text-dark);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.tip-text {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* === FAQ Page === */
.faq-categories {
    background: var(--bg-light);
    padding: var(--spacing-md) 0;
}

.category-nav {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.category-link {
    background: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 2rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    color: var(--text-dark);
}

.category-link:hover {
    background: var(--primary-color);
    color: white;
}

.faq-category-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
    color: var(--text-dark);
    text-align: center;
}

.faq-accordion {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item-detailed {
    background: white;
    margin-bottom: var(--spacing-md);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question-btn {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: white;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background 0.3s ease;
}

.faq-question-btn:hover {
    background: var(--bg-light);
}

.faq-q-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    transition: transform 0.3s ease;
}

.faq-item-detailed.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer-detailed {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-light);
    line-height: 1.7;
    display: none;
}

.faq-item-detailed.active .faq-answer-detailed {
    display: block;
}

.faq-answer-detailed h4 {
    color: var(--text-dark);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.faq-answer-detailed ul {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.faq-answer-detailed li {
    margin-bottom: var(--spacing-xs);
}

.faq-answer-detailed ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.cta-inline {
    margin: var(--spacing-md) 0;
}

.help-box {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: var(--spacing-xl);
    border-radius: 1rem;
    text-align: center;
    color: white;
}

.help-title {
    color: white;
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.help-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

/* === Responsive Design === */
@media (max-width: 768px) {
    /* Typography */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }
    
    .hero-title { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }
    .section-title { font-size: 1.75rem; }
    
    /* Navigation */
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    /* Hero */
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    /* Steps */
    .steps {
        flex-direction: column;
    }
    
    /* Platform Header */
    .platform-header {
        flex-direction: column;
        text-align: center;
    }
    
    /* Download Box */
    .download-box {
        flex-direction: column;
        text-align: center;
    }
    
    /* Grids */
    .features-grid,
    .platforms-grid,
    .config-types,
    .tips-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .btn-large {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .btn-mega {
        padding: 1rem 1.75rem;
        font-size: 1.1rem;
    }
    
    .cta-benefits {
        grid-template-columns: 1fr;
    }
}