* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

:root {
    --primary-bg: #FFFFFF;
    --secondary-bg: #F8FAFC;
    --text-primary: #303948;
    --text-secondary: #4B5563;
    --text-muted: #6B7280;
    --accent: #3CBEF2;
    --accent-hover: #2AA8DC;
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    --border: #E5E7EB;
    --border-light: #F0F0F0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.06);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.08);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    font-weight: 400;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

.header {
    text-align: center;
    padding: 72px 0 56px;
    position: relative;
    background: linear-gradient(135deg, #FFFFFF 0%, #F8FAFC 100%);
    border-bottom: 1px solid var(--border-light);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3CBEF2, #2AA8DC, #3CBEF2);
    background-size: 200% 100%;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.logo-container {
    margin-bottom: 32px;
    position: relative;
    display: inline-block;
}

.logo {
    width: 165px;
    height: 60px;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(60, 190, 242, 0.1));
    transition: var(--transition);
}

.logo:hover {
    filter: drop-shadow(0 6px 12px rgba(60, 190, 242, 0.2));
    transform: translateY(-1px);
}

.main-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto;
    font-weight: 400;
    opacity: 0.9;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 48px;
    padding: 64px 0;
}

.main-content {
    display: flex;
    flex-direction: column;
    gap: 64px;
}

.sidebar {
    position: sticky;
    top: 32px;
    height: fit-content;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.verification-section {
    background: var(--secondary-bg);
    padding: 48px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.verification-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
}

.verification-section h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.verification-box {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.verification-input {
    padding: 20px 28px;
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    font-size: 1.0625rem;
    font-family: var(--font-primary);
    background: var(--primary-bg);
    color: var(--text-primary);
    transition: var(--transition);
    width: 100%;
}

.verification-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(60, 190, 242, 0.15);
    transform: translateY(-1px);
}

.verification-input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.verify-btn {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: white;
    border: none;
    padding: 20px 36px;
    border-radius: var(--radius-lg);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    align-self: flex-start;
    min-width: 200px;
    position: relative;
    overflow: hidden;
}

.verify-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.7s;
}

.verify-btn:hover::before {
    left: 100%;
}

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

.verification-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
    padding-top: 40px;
    border-top: 1px solid var(--border-light);
}

.stat {
    text-align: center;
    position: relative;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 8px;
    line-height: 1;
}

.stat-label {
    font-size: 0.9375rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mirrors-section {
    padding: 48px;
    background: var(--primary-bg);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 20px;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.status-indicator {
    background: var(--success);
    color: white;
    padding: 10px 24px;
    border-radius: 100px;
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    box-shadow: var(--shadow-sm);
}

.mirrors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 28px;
    margin-top: 40px;
}

.mirror-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.mirror-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent);
    transform: scaleY(0);
    transition: transform 0.3s ease;
    transform-origin: top;
}

.mirror-card:hover::before {
    transform: scaleY(1);
}

.mirror-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.mirror-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.mirror-badge {
    background: rgba(60, 190, 242, 0.1);
    color: var(--accent);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

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

.link-url {
    font-family: 'Roboto Mono', monospace, sans-serif;
    font-size: 0.9375rem;
    background: var(--primary-bg);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin-bottom: 24px;
    cursor: pointer;
    transition: var(--transition);
    word-break: break-all;
    color: var(--text-primary);
    line-height: 1.5;
}

.link-url:hover {
    background: rgba(60, 190, 242, 0.03);
    border-color: var(--accent);
}

.mirror-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copy-btn {
    background: var(--primary-bg);
    color: var(--accent);
    border: 2px solid var(--accent);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-btn::before {
    content: '📋';
    font-size: 0.875rem;
}

.copy-btn:hover {
    background: var(--accent);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.verified-badge {
    color: var(--success);
    font-weight: 700;
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.verified-badge::before {
    content: '✓';
    font-size: 1.125rem;
}

.content-section {
    padding: 48px;
    background: var(--primary-bg);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

.content-section h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--border-light);
    position: relative;
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: var(--accent);
}

.content-block {
    margin-bottom: 48px;
}

.content-block h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    position: relative;
    padding-left: 28px;
}

.content-block h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(60, 190, 242, 0.1);
}

.content-block h4 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 32px 0 16px;
}

.content-block p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.0625rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin: 32px 0;
}

.feature {
    background: var(--secondary-bg);
    padding: 28px 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
}

.feature:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature h4 {
    color: var(--accent);
    font-size: 0.9375rem;
    margin: 0 0 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.feature p {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.feature-list {
    list-style: none;
    margin: 24px 0;
}

.feature-list li {
    padding: 16px 0 16px 48px;
    border-bottom: 1px solid var(--border-light);
    position: relative;
    color: var(--text-secondary);
    font-size: 1.0625rem;
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    background: rgba(60, 190, 242, 0.1);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.125rem;
}

.security-alert {
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.05) 0%, rgba(255, 152, 0, 0.02) 100%);
    border: 1px solid var(--warning);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin: 32px 0;
    position: relative;
    overflow: hidden;
}

.security-alert::before {
    content: '⚠️';
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 1.5rem;
    opacity: 0.2;
}

.security-alert h4 {
    color: var(--warning);
    margin-top: 0;
}

.cta-box {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: white;
    padding: 56px;
    border-radius: var(--radius-xl);
    text-align: center;
    margin-top: 64px;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.1;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 20px); }
}

.cta-box h3 {
    color: white;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.cta-box p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.primary-btn {
    background: white;
    color: var(--accent);
    border: none;
    padding: 20px 48px;
    border-radius: var(--radius-lg);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    min-width: 220px;
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-lg);
}

.primary-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.info-card {
    background: var(--secondary-bg);
    padding: 32px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.info-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 16px;
}

.info-card h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--accent);
}

.info-card ul {
    list-style: none;
}

.info-card li {
    padding: 14px 0;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    font-size: 1.0625rem;
    position: relative;
    padding-left: 32px;
}

.info-card li:last-child {
    border-bottom: none;
}

.info-card li::before {
    content: '→';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent);
    font-weight: bold;
    width: 20px;
    text-align: center;
}

.update-card {
    background: linear-gradient(135deg, var(--secondary-bg) 0%, #F0F4F8 100%);
    padding: 32px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.update-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.status-text {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    margin-bottom: 20px;
    font-size: 1.125rem;
}

.online-dot {
    width: 12px;
    height: 12px;
    background: var(--success);
    border-radius: 50%;
    display: inline-block;
    position: relative;
}

.online-dot::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--success);
    opacity: 0.2;
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.2; }
    100% { transform: translate(-50%, -50%) scale(2); opacity: 0; }
}

.date {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 8px;
}

.note {
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin-bottom: 24px;
}

.uptime-stats {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.uptime {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
}

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

.uptime-value {
    color: var(--success);
    font-weight: 700;
    font-size: 1.0625rem;
}

.keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.keyword {
    background: rgba(60, 190, 242, 0.08);
    color: var(--accent);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid transparent;
}

.keyword:hover {
    background: rgba(60, 190, 242, 0.15);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.footer {
    padding: 64px 0 48px;
    background: var(--secondary-bg);
    border-top: 1px solid var(--border);
    margin-top: 64px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.0625rem;
}

.copyright {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9375rem;
    padding-top: 32px;
    border-top: 1px solid var(--border-light);
}

.seo-note {
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 16px;
    opacity: 0.7;
}

.validation-result {
    margin-top: 20px;
    padding: 20px 24px;
    border-radius: var(--radius-md);
    display: none;
    font-weight: 600;
    font-size: 1.0625rem;
    position: relative;
    overflow: hidden;
}

.validation-result::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.validation-result.success {
    display: block;
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid var(--success);
    color: var(--success);
}

.validation-result.success::before {
    background: var(--success);
}

.validation-result.error {
    display: block;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid var(--error);
    color: var(--error);
}

.validation-result.error::before {
    background: var(--error);
}

.notification {
    position: fixed;
    top: 32px;
    right: 32px;
    background: var(--success);
    color: white;
    padding: 20px 32px;
    border-radius: var(--radius-md);
    z-index: 10000;
    transform: translateX(150%);
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    font-weight: 600;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 280px;
}

.notification::before {
    content: '✓';
    font-size: 1.25rem;
}

.notification.show {
    transform: translateX(0);
}

@media (max-width: 1200px) {
    .content-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .sidebar {
        position: static;
        order: -1;
    }
    
    .mirrors-grid {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .header {
        padding: 48px 0 40px;
    }
    
    .main-title {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1.125rem;
    }
    
    .content-grid {
        padding: 48px 0;
        gap: 32px;
    }
    
    .verification-section,
    .mirrors-section,
    .content-section {
        padding: 32px 24px;
    }
    
    .verification-section h2,
    .section-header h2,
    .content-section h2 {
        font-size: 1.875rem;
    }
    
    .content-block h3 {
        font-size: 1.5rem;
        padding-left: 24px;
    }
    
    .verification-stats {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .verify-btn {
        align-self: stretch;
        min-width: auto;
    }
    
    .mirrors-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .mirror-footer {
        flex-direction: column;
        gap: 20px;
        align-items: flex-start;
    }
    
    .cta-box {
        padding: 40px 24px;
    }
    
    .cta-box h3 {
        font-size: 1.875rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 40px 0 32px;
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .verification-section,
    .mirrors-section,
    .content-section {
        padding: 28px 20px;
        border-radius: var(--radius-lg);
    }
    
    .content-grid {
        padding: 40px 0;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .status-indicator {
        align-self: flex-start;
    }
    
    .verification-input {
        padding: 18px 24px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .content-block h3 {
        font-size: 1.375rem;
    }
    
    .content-block h4 {
        font-size: 1.25rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .notification {
        top: 20px;
        right: 20px;
        left: 20px;
        min-width: auto;
    }
}

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

/* Добавить в конец существующего CSS */

.breadcrumb {
    margin-top: 24px;
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.guide-section,
.security-section,
.comparison-section,
.faq-section,
.update-section {
    padding: 48px;
    background: var(--primary-bg);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    margin-top: 48px;
}

.guide-section h2,
.security-section h2,
.comparison-section h2,
.faq-section h2,
.update-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 20px;
}

.guide-section h2::after,
.security-section h2::after,
.comparison-section h2::after,
.faq-section h2::after,
.update-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent);
}

.step-container {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 32px;
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.step:hover {
    border-color: var(--accent);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.security-card {
    background: var(--secondary-bg);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.security-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 16px;
}

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

.comparison-table {
    overflow-x: auto;
    margin-top: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.comparison-table th {
    background: var(--secondary-bg);
    padding: 20px 24px;
    text-align: left;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
}

.comparison-table td {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
}

.comparison-table tr:hover td {
    background: rgba(60, 190, 242, 0.03);
}

.comparison-table td:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

.faq-container {
    margin-top: 32px;
}

.faq-item {
    padding: 28px;
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: 20px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--accent);
}

.faq-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.update-list {
    margin-top: 32px;
}

.update-item {
    padding: 28px;
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: 20px;
    border-left: 4px solid var(--accent);
}

.update-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.update-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.secondary-btn {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 18px 36px;
    border-radius: var(--radius-lg);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-left: 20px;
}

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

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    margin: 32px 0;
    padding-top: 32px;
    border-top: 1px solid var(--border-light);
}

.footer-links a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .guide-section,
    .security-section,
    .comparison-section,
    .faq-section,
    .update-section {
        padding: 32px 24px;
    }
    
    .step {
        flex-direction: column;
        gap: 20px;
        padding: 24px;
    }
    
    .step:hover {
        transform: translateY(-4px);
    }
    
    .security-grid {
        grid-template-columns: 1fr;
    }
    
    .secondary-btn {
        margin-left: 0;
        margin-top: 16px;
    }
    
    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .guide-section h2,
    .security-section h2,
    .comparison-section h2,
    .faq-section h2,
    .update-section h2 {
        font-size: 1.75rem;
    }
    
    .step-content h3 {
        font-size: 1.25rem;
    }
    
    .security-card,
    .faq-item,
    .update-item {
        padding: 24px;
    }
}

.breadcrumb {
    margin-top: 24px;
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.guide-section,
.security-section,
.comparison-section,
.faq-section,
.update-section {
    padding: 48px;
    background: var(--primary-bg);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    margin-top: 48px;
}

.guide-section h2,
.security-section h2,
.comparison-section h2,
.faq-section h2,
.update-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-light);
    position: relative;
}

.guide-section h2::after,
.security-section h2::after,
.comparison-section h2::after,
.faq-section h2::after,
.update-section h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent);
}

.step-container {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 28px;
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.step:hover {
    border-color: var(--accent);
    transform: translateX(4px);
}

.step-number {
    width: 52px;
    height: 52px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.375rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.3125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.0625rem;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.security-card {
    background: var(--secondary-bg);
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.security-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}

.security-card h4 {
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 16px;
}

.security-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.0625rem;
}

.comparison-table {
    overflow-x: auto;
    margin-top: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    -webkit-overflow-scrolling: touch;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.comparison-table th {
    background: var(--secondary-bg);
    padding: 18px 24px;
    text-align: left;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
    font-size: 1.0625rem;
}

.comparison-table td {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    font-size: 1.0625rem;
}

.comparison-table tr:hover td {
    background: rgba(60, 190, 242, 0.03);
}

.comparison-table td:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

.faq-container {
    margin-top: 32px;
}

.faq-item {
    padding: 28px;
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: 20px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--accent);
}

.faq-item h4 {
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.0625rem;
}

.update-list {
    margin-top: 32px;
}

.update-item {
    padding: 28px;
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: 20px;
    border-left: 4px solid var(--accent);
}

.update-item h4 {
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.update-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.0625rem;
}

.secondary-btn {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 18px 36px;
    border-radius: var(--radius-lg);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-left: 20px;
    display: inline-block;
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    transform: translateY(-2px);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    margin: 32px 0;
    padding-top: 32px;
    border-top: 1px solid var(--border-light);
}

.footer-links a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

@media (max-width: 1200px) {
    .guide-section,
    .security-section,
    .comparison-section,
    .faq-section,
    .update-section {
        padding: 40px 32px;
    }
}

@media (max-width: 768px) {
    .guide-section,
    .security-section,
    .comparison-section,
    .faq-section,
    .update-section {
        padding: 32px 24px;
        margin-top: 40px;
    }
    
    .guide-section h2,
    .security-section h2,
    .comparison-section h2,
    .faq-section h2,
    .update-section h2 {
        font-size: 1.75rem;
        margin-bottom: 32px;
    }
    
    .step {
        flex-direction: column;
        gap: 20px;
        padding: 24px;
    }
    
    .step:hover {
        transform: translateY(-3px);
    }
    
    .step-number {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
    
    .step-content h3 {
        font-size: 1.25rem;
    }
    
    .security-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .security-card,
    .faq-item,
    .update-item {
        padding: 24px;
    }
    
    .secondary-btn {
        margin-left: 0;
        margin-top: 16px;
        width: 100%;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
    
    .comparison-table {
        margin-left: -24px;
        margin-right: -24px;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    
    .comparison-table table {
        min-width: 500px;
    }
}

@media (max-width: 480px) {
    .guide-section h2,
    .security-section h2,
    .comparison-section h2,
    .faq-section h2,
    .update-section h2 {
        font-size: 1.5rem;
    }
    
    .step-content h3 {
        font-size: 1.1875rem;
    }
    
    .security-card h4,
    .faq-item h4,
    .update-item h4 {
        font-size: 1.125rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 14px 16px;
        font-size: 0.9375rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .step,
    .security-card,
    .faq-item,
    .secondary-btn {
        transition: none;
    }
    
    .step:hover,
    .security-card:hover,
    .secondary-btn:hover {
        transform: none;
    }
}

@media print {
    .guide-section,
    .security-section,
    .comparison-section,
    .faq-section,
    .update-section {
        border: 1px solid #ddd;
        box-shadow: none;
        page-break-inside: avoid;
    }
    
    .secondary-btn {
        display: none;
    }
}