/**
 * 快连VPN官方网站 - 样式表
 * KuaiLian VPN Official Website Stylesheet
 */

/* ========================================
   CSS Variables & Design Tokens
   ======================================== */
:root {
    /* Primary Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    
    /* Secondary Colors */
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --bg-dark-light: #1e293b;
    
    /* Text Colors */
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    --text-white: #ffffff;
    
    /* Border & Shadow */
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: 1rem;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ========================================
   Accessibility
   ======================================== */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius);
    z-index: 9999;
    font-weight: 600;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

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

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

/* ========================================
   Layout & Container
   ======================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

@media (min-width: 640px) {
    :root { --container-padding: 1.5rem; }
}

@media (min-width: 1024px) {
    :root { --container-padding: 2rem; }
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: box-shadow var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-icon {
    font-size: 2rem;
    line-height: 1;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.logo-tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.nav-menu {
    display: none;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--space-2) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width var(--transition-fast);
}

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

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (min-width: 1024px) {
    .nav-menu {
        display: flex;
    }
    .mobile-menu-toggle {
        display: none;
    }
}

/* Mobile Menu */
@media (max-width: 1023px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--space-6);
        gap: 0;
        transform: translateX(100%);
        transition: transform var(--transition);
    }
    
    .nav-menu.active {
        transform: translateX(0);
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-link {
        display: block;
        padding: var(--space-4) 0;
        font-size: 1.125rem;
    }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

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

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: 1rem;
}

.btn-download {
    background: var(--primary);
    color: white;
    width: 100%;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-4) var(--space-6);
}

.btn-download:hover {
    background: var(--primary-dark);
}

.btn-download .version {
    font-size: 0.75rem;
    opacity: 0.8;
    font-weight: 400;
}

.btn-pricing {
    background: var(--gray-100);
    color: var(--text-primary);
    width: 100%;
    margin-top: auto;
}

.btn-pricing:hover {
    background: var(--gray-200);
}

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

.btn-popular:hover {
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-cta-primary {
    background: white;
    color: var(--primary);
    padding: var(--space-4) var(--space-10);
    font-size: 1.125rem;
    font-weight: 700;
}

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

.btn-cta-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
    padding: var(--space-4) var(--space-10);
    font-size: 1.125rem;
    font-weight: 600;
}

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

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    padding: calc(72px + var(--space-20)) 0 var(--space-20);
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
    overflow: hidden;
}

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

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-6);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.hero-title .highlight {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

.hero-desc {
    font-size: 1.0625rem;
    color: var(--text-muted);
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-unit {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--space-1);
}

/* Hero Visual - App Mockup */
.hero-visual {
    display: none;
    position: relative;
}

.app-mockup {
    width: 280px;
    background: var(--bg-dark);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform var(--transition);
}

.app-mockup:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
}

.app-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--gray-500);
}

.status-dot.connected {
    background: var(--success);
    animation: pulse 2s infinite;
}

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

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

.app-timer {
    font-size: 0.875rem;
    color: var(--text-light);
    font-family: monospace;
}

.speed-display {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.speed-item {
    text-align: center;
    padding: var(--space-4);
    background: var(--bg-dark-light);
    border-radius: var(--radius-lg);
}

.speed-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
    margin-bottom: var(--space-1);
}

.speed-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.speed-unit {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-left: 2px;
}

.server-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--bg-dark-light);
    border-radius: var(--radius-lg);
}

.server-flag {
    font-size: 1.5rem;
}

.server-name {
    font-size: 0.9375rem;
    color: white;
    font-weight: 500;
}

.server-ping {
    font-size: 0.75rem;
    color: var(--success);
    background: rgba(16, 185, 129, 0.2);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius);
}

.app-footer {
    margin-top: var(--space-6);
}

.disconnect-btn {
    width: 100%;
    padding: var(--space-3);
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: not-allowed;
}

/* Floating Elements */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.float-item {
    position: absolute;
    font-size: 2rem;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.float-1 { top: 10%; left: -20%; animation-delay: 0s; }
.float-2 { top: 30%; right: -15%; animation-delay: 1s; }
.float-3 { bottom: 20%; left: -10%; animation-delay: 2s; }
.float-4 { bottom: 40%; right: -20%; animation-delay: 3s; }

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

/* Hero Background */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    top: -200px;
    right: -200px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
    bottom: -100px;
    left: -100px;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
    top: 50%;
    right: 20%;
    opacity: 0.3;
}

/* Responsive Hero */
@media (min-width: 1024px) {
    .hero .container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-16);
        align-items: center;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-visual {
        display: block;
    }
    
    .hero-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-12);
}

.section-header.light {
    color: white;
}

.section-header.light .section-title,
.section-header.light .section-desc {
    color: white;
}

.section-tag {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    line-height: 1.2;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-muted);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
}

/* ========================================
   Download Section
   ======================================== */
.download-section {
    padding: var(--space-20) 0;
    background: var(--bg-secondary);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-6);
    max-width: 1000px;
    margin: 0 auto;
}

.download-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
    position: relative;
}

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

.download-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary), var(--shadow-lg);
}

.platform-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-gradient);
    color: white;
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}

.platform-icon-wrapper {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-6);
}

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

.platform-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.platform-desc {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
}

.platform-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.platform-features li {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    background: var(--gray-100);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius);
}

.download-note {
    text-align: center;
    margin-top: var(--space-8);
    padding: var(--space-6);
    background: rgba(99, 102, 241, 0.05);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
}

@media (min-width: 640px) {
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .download-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   Features Section
   ======================================== */
.features-section {
    padding: var(--space-20) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-6);
}

.feature-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

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

.feature-icon-wrapper {
    width: 64px;
    height: 64px;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
}

.feature-icon {
    width: 32px;
    height: 32px;
    color: white;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.feature-desc {
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.6;
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========================================
   Servers Section
   ======================================== */
.servers-section {
    padding: var(--space-20) 0;
    background: var(--bg-dark);
    color: white;
}

.servers-visual {
    display: grid;
    gap: var(--space-12);
    align-items: center;
}

.world-map {
    position: relative;
    height: 300px;
    background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.map-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.map-svg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    color: rgba(255, 255, 255, 0.2);
}

.server-node {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.node-pulse {
    width: 12px;
    height: 12px;
    background: var(--success);
    border-radius: 50%;
    position: relative;
}

.node-pulse::before,
.node-pulse::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: var(--success);
    border-radius: 50%;
    animation: nodePulse 2s infinite;
}

.node-pulse::after {
    animation-delay: 1s;
}

@keyframes nodePulse {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(3); opacity: 0; }
}

.node-label {
    font-size: 0.625rem;
    color: rgba(255, 255, 255, 0.7);
    white-space: nowrap;
}

/* Node Positions */
.node-us { top: 35%; left: 20%; }
.node-jp { top: 30%; right: 20%; }
.node-sg { top: 55%; right: 25%; }
.node-hk { top: 40%; right: 22%; }
.node-tw { top: 42%; right: 18%; }
.node-kr { top: 32%; right: 15%; }
.node-de { top: 25%; left: 48%; }
.node-uk { top: 20%; left: 42%; }

.servers-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.region-group {
    background: var(--bg-dark-light);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
}

.region-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: white;
}

.region-servers {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.server-tag {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius);
}

@media (min-width: 1024px) {
    .servers-visual {
        grid-template-columns: 1fr 1fr;
    }
    
    .world-map {
        height: 400px;
    }
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing-section {
    padding: var(--space-20) 0;
    background: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-6);
    max-width: 1000px;
    margin: 0 auto;
    align-items: start;
}

.pricing-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: all var(--transition);
}

.pricing-card:hover {
    box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary), var(--shadow-lg);
    position: relative;
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-gradient);
    color: white;
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--space-8);
    position: relative;
}

.pricing-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.pricing-price {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 2px;
    margin-bottom: var(--space-2);
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
}

.price-value {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.price-period {
    font-size: 1rem;
    color: var(--text-muted);
    align-self: flex-end;
    margin-bottom: var(--space-2);
}

.pricing-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--success);
    color: white;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-desc {
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.pricing-features {
    margin-bottom: var(--space-8);
    flex-grow: 1;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

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

.pricing-features li.disabled {
    color: var(--text-light);
}

.check-icon {
    color: var(--success);
    font-weight: 700;
}

.cross-icon {
    color: var(--gray-400);
    font-weight: 700;
}

@media (min-width: 768px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-card.popular {
        transform: scale(1.05);
    }
}

/* ========================================
   FAQ Section
   ======================================== */
.faq-section {
    padding: var(--space-20) 0;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    overflow: hidden;
    transition: all var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6);
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    background: white;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-q {
    color: var(--primary);
    font-weight: 700;
    flex-shrink: 0;
}

.faq-text {
    flex-grow: 1;
}

.faq-toggle {
    width: 24px;
    height: 24px;
    color: var(--primary);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.faq-question[aria-expanded="true"] .faq-toggle {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--space-6) var(--space-6);
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq-answer p {
    margin-bottom: var(--space-4);
}

.faq-answer ul,
.faq-answer ol {
    margin-left: var(--space-6);
    margin-bottom: var(--space-4);
}

.faq-answer li {
    margin-bottom: var(--space-2);
}

.faq-answer strong {
    color: var(--text-primary);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    padding: var(--space-20) 0;
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2rem;
    font-weight: 800;
    color: white;
    margin-bottom: var(--space-4);
}

.cta-desc {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

.cta-trust {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-8);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.trust-icon {
    font-size: 1.25rem;
}

@media (min-width: 768px) {
    .cta-title {
        font-size: 2.5rem;
    }
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

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

.footer-logo .logo-text {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-desc {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin-bottom: var(--space-6);
}

.footer-social {
    display: flex;
    gap: var(--space-4);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

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

.footer-social svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: white;
}

.footer-column ul li {
    margin-bottom: var(--space-3);
}

.footer-column ul li a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-8);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-disclaimer {
    margin-top: var(--space-2);
    font-size: 0.75rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 2fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   Animations & Utilities
   ======================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}