/* style.css */
:root {
    --primary-bg: #FFFFFF;
    --secondary-bg: #F8FAFC;
    --surface: #FFFFFF;
    --text-primary: #303948;
    --text-secondary: #6B7280;
    --accent: #3cbef2;
    --accent-hover: #2aa8d9;
    --success: #00a859;
    --error: #ff3366;
    --border: #E5E7EB;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.02), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.04);
    --radius: 12px;
    --radius-sm: 8px;
    --font-main: 'Inter', -apple-system, sans-serif;
    --font-display: 'Space Grotesk', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.03;
    pointer-events: none;
    z-index: -1;
}

.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-badge {
    background: var(--accent);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-family: var(--font-display);
}

.main-nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}

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

.header-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

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

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-section {
    padding: 5rem 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

.title-line.accent {
    color: var(--accent);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

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

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

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--accent);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-visual {
    position: relative;
}

.visual-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    transform: rotate(45deg);
}

.grid-item {
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--accent), transparent 70%);
    border-radius: var(--radius);
    opacity: 0.3;
}

.section {
    padding: 5rem 0;
}

.alt-section {
    background: var(--secondary-bg);
    border-radius: var(--radius);
    margin: 2rem 0;
    padding: 5rem 2rem;
}

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

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.title-decor {
    color: var(--accent);
    opacity: 0.5;
}

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

.links-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.link-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.link-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.link-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.link-url {
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    color: var(--text-primary);
    padding: 1rem;
    background: var(--secondary-bg);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
    word-break: break-all;
}

.link-url:hover {
    background: rgba(60, 190, 242, 0.05);
}

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

.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.copy-btn:hover {
    background: var(--secondary-bg);
}

.access-btn {
    background: var(--accent);
    color: white;
    text-decoration: none;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
    transition: background 0.2s;
}

.access-btn:hover {
    background: var(--accent-hover);
}

.verification-container {
    max-width: 600px;
    margin: 0 auto;
}

.verification-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.verification-visual {
    height: 4px;
    background: linear-gradient(90deg, var(--accent), transparent);
    border-radius: 2px;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.scan-line {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    animation: scan 3s ease-in-out infinite;
}

@keyframes scan {
    0% { left: -100%; }
    100% { left: 100%; }
}

.verification-input {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.validator-input {
    flex: 1;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.validator-input:focus {
    outline: none;
    border-color: var(--accent);
}

.validate-btn {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0 2rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.validate-btn:hover {
    background: var(--accent-hover);
}

.validation-result {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--radius-sm);
    display: none;
    font-weight: 500;
}

.validation-result.success {
    display: block;
    background: rgba(0, 168, 89, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.validation-result.error {
    display: block;
    background: rgba(255, 51, 102, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

.verification-info {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.protocol-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.protocol-card {
    text-align: center;
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: transform 0.3s ease;
}

.protocol-card:hover {
    transform: translateY(-5px);
}

.protocol-icon {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.protocol-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.protocol-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.main-footer {
    border-top: 1px solid var(--border);
    padding: 3rem 0;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-meta {
    text-align: right;
}

.footer-disclaimer {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    z-index: 10000;
    transform: translateX(150%);
    transition: transform 0.3s ease;
    font-weight: 500;
    box-shadow: var(--shadow);
}

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

@media (max-width: 768px) {
    .hero-section {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 3rem 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .main-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 2rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .verification-input {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-meta {
        text-align: center;
    }
    
    .header-inner {
        padding: 0 1rem;
    }
    
    .content-wrapper {
        padding: 0 1rem;
    }
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.primary-btn, .secondary-btn {
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.95rem;
}

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

.primary-btn:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
}

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

.secondary-btn:hover {
    background: rgba(60, 190, 242, 0.1);
    transform: translateY(-2px);
}

.visual-label {
    position: absolute;
    bottom: -30px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.section-meta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 1rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.link-info {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.info-tag {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.625rem;
    background: rgba(60, 190, 242, 0.08);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--accent);
}

.link-priority {
    padding: 0.25rem 0.75rem;
    background: rgba(48, 57, 72, 0.08);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.section-footer {
    margin-top: 3rem;
    padding: 1.5rem;
    background: var(--secondary-bg);
    border-radius: var(--radius);
    text-align: center;
}

.footer-note {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.review-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2.5rem;
    border: 1px solid var(--border);
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.review-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.review-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.review-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.meta-item {
    padding: 0.375rem 0.875rem;
    background: var(--secondary-bg);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.review-body {
    line-height: 1.7;
}

.review-body p {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.feature-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--secondary-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.feature-icon {
    width: 32px;
    height: 32px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.subsection-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2.5rem 0;
}

.comparison-item {
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.comparison-item.positive {
    border-color: var(--success);
    background: rgba(0, 168, 89, 0.05);
}

.comparison-item.consideration {
    border-color: var(--text-secondary);
    background: rgba(107, 114, 128, 0.05);
}

.comparison-item h5 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.comparison-item ul {
    padding-left: 1.25rem;
    color: var(--text-secondary);
}

.comparison-item li {
    margin-bottom: 0.5rem;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.security-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.25rem;
    background: var(--secondary-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.security-level {
    padding: 0.375rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.security-level.high {
    background: rgba(0, 168, 89, 0.15);
    color: var(--success);
}

.security-level.medium {
    background: rgba(255, 193, 7, 0.15);
    color: #d4a017;
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.step-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.step-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

.step-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: rgba(60, 190, 242, 0.1);
    line-height: 1;
}

.step-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.step-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.step-list {
    padding-left: 1.25rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.step-list li {
    margin-bottom: 0.375rem;
}

.seo-content {
    margin: 4rem 0;
    padding: 3rem;
    background: var(--secondary-bg);
    border-radius: var(--radius);
}

.seo-section {
    max-width: 800px;
    margin: 0 auto;
}

.seo-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    text-align: center;
}

.seo-content p {
    margin-bottom: 1.25rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.footer-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.keyword {
    padding: 0.25rem 0.75rem;
    background: rgba(60, 190, 242, 0.1);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--accent);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    justify-content: center;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--accent);
}

.scan-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
}

.pattern-line {
    position: absolute;
    height: 1px;
    background: var(--accent);
    width: 100%;
}

.pattern-line:nth-child(1) { top: 25%; }
.pattern-line:nth-child(2) { top: 50%; }
.pattern-line:nth-child(3) { top: 75%; }

@media (max-width: 768px) {
    .hero-cta {
        flex-direction: column;
    }
    
    .review-card {
        padding: 1.5rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .guide-steps {
        grid-template-columns: 1fr;
    }
    
    .seo-content {
        padding: 1.5rem;
    }
    
    .footer-keywords {
        justify-content: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

.mirror-notice {
    background: rgba(60, 190, 242, 0.05);
    border: 1px solid rgba(60, 190, 242, 0.2);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-top: 2rem;
}

.notice-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.notice-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.tip {
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.verification-features {
    margin-top: 3rem;
}

.features-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.platform-evolution {
    margin-top: 4rem;
}

.evolution-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-primary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent);
    opacity: 0.3;
}

.timeline-item {
    display: flex;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-date {
    width: 60px;
    font-weight: 600;
    color: var(--accent);
    font-family: var(--font-display);
    flex-shrink: 0;
}

.timeline-content {
    flex: 1;
    padding-left: 2rem;
}

.timeline-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.features-overview {
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.feature-card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.feature-list li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
}

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

.safety-tips {
    margin-top: 3rem;
}

.tips-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-primary);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.tip-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.tip-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.security-compliance {
    margin-top: 3rem;
    padding: 2rem;
    background: rgba(60, 190, 242, 0.05);
    border-radius: var(--radius);
}

.compliance-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--text-primary);
}

.compliance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

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

.compliance-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.compliance-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.faq-item {
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: var(--surface);
    border: none;
    text-align: left;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s;
}

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

.faq-icon {
    font-size: 1.5rem;
    color: var(--accent);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
    padding: 1.5rem;
    max-height: 500px;
}

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

.seo-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .notice-tips {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-date {
        width: 40px;
    }
    
    .timeline-content {
        padding-left: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .compliance-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-question {
        font-size: 1rem;
        padding: 1rem;
    }
}