:root {
    --bg-primary: #303948;
    --bg-secondary: #1e2a32;
    --bg-tertiary: #25323d;
    --bg-card: #1f2b34;
    --text-light: #FFFFFF;
    --text-dim: #b0bec5;
    --text-muted: #8a9aa8;
    --accent: #3cbef2;
    --accent-dim: #2a8bb3;
    --border-color: #4a5a68;
    --border-light: #3e4d59;
    --success-bg: rgba(60, 190, 242, 0.08);
    --error-bg: rgba(255, 90, 90, 0.08);
    --error-text: #ff8a8a;
    --font-mono: 'Courier New', Courier, monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Lucida Console', 'Lucida Sans Typewriter', monaco, monospace;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.35);
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-light);
    font-family: var(--font-sans);
    line-height: 1.6;
    font-size: 16px;
    letter-spacing: 0.2px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.archive-header {
    background-color: var(--bg-secondary);
    border-bottom: 2px solid var(--accent);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background-color: rgba(30, 42, 50, 0.95);
    box-shadow: var(--shadow-sm);
}

.header-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 16px;
}

.site-logo {
    display: block;
    width: 165px;
    height: 60px;
    border: 1px solid var(--accent);
    padding: 4px;
    background-color: var(--bg-primary);
    transition: border-color var(--transition-fast);
    object-fit: contain;
}

.site-logo:hover {
    border-color: var(--text-light);
}

.est-badge {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    border: 1px solid var(--border-color);
    padding: 6px 10px;
    background-color: rgba(0, 0, 0, 0.2);
    letter-spacing: 0.5px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 6px 0;
    border-bottom: 1px solid transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    font-weight: 400;
}

.nav-link:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.hero {
    padding: 80px 0 64px;
    border-bottom: 1px solid var(--border-light);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 350;
    text-transform: uppercase;
    letter-spacing: 6px;
    margin-bottom: 24px;
    line-height: 1.2;
    word-break: break-word;
    text-shadow: 3px 3px 0 rgba(0, 0, 0, 0.3);
}

.accent {
    color: var(--accent);
    font-weight: 400;
}

.subhead {
    font-size: 1.25rem;
    max-width: 900px;
    color: var(--text-dim);
    line-height: 1.6;
    border-left: 3px solid var(--accent);
    padding-left: 24px;
}

section {
    padding: 70px 0;
    border-bottom: 1px solid var(--border-light);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    margin-bottom: 48px;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 12px;
    gap: 12px;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 350;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.section-archive-note {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.9rem;
    background-color: rgba(60, 190, 242, 0.1);
    padding: 6px 12px;
    border: 1px solid var(--border-light);
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
    margin-bottom: 24px;
}

.link-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 0;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
}

.link-card:hover {
    transform: translateY(-6px);
    box-shadow: 10px 10px 0 var(--accent);
    border-color: var(--accent);
}

.card-header {
    display: flex;
    justify-content: space-between;
    padding: 14px 18px;
    background-color: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.card-index {
    color: var(--accent);
    font-family: var(--font-mono);
    font-weight: bold;
}

.link-protocol {
    color: var(--text-muted);
    text-transform: uppercase;
}

.card-body {
    padding: 24px 18px;
    flex-grow: 1;
    display: flex;
    align-items: center;
    word-break: break-all;
    background-color: rgba(0, 0, 0, 0.1);
}

.link-url {
    word-break: break-all;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: underline dotted var(--accent);
    text-underline-offset: 5px;
    transition: color var(--transition-fast);
}

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

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background-color: rgba(0, 0, 0, 0.3);
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.link-latency {
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.latency-value {
    color: var(--accent);
    font-weight: bold;
}

.copy-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 6px 16px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    transition: all var(--transition-fast);
    text-transform: lowercase;
    letter-spacing: 0.5px;
}

.copy-btn:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

.disclaimer {
    margin-top: 32px;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: right;
    border-top: 1px dashed var(--border-light);
    padding-top: 20px;
    font-style: italic;
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.review-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-fast);
}

.review-card:hover {
    border-color: var(--accent-dim);
}

.review-card h3 {
    margin-bottom: 18px;
    color: var(--accent);
    font-size: 1.3rem;
    font-weight: 400;
    letter-spacing: 1px;
    border-bottom: 1px dashed var(--border-light);
    padding-bottom: 10px;
}

.review-card p {
    color: var(--text-dim);
    margin-bottom: 16px;
    font-size: 0.95rem;
    line-height: 1.7;
}

.review-card.full-width {
    grid-column: span 2;
    background-color: var(--bg-secondary);
}

.verify-section {
    background: linear-gradient(0deg, var(--bg-tertiary), var(--bg-primary));
}

.verify-card {
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    padding: 48px;
    max-width: 850px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
    transition: border-color var(--transition-base);
}

.verify-card:hover {
    border-color: var(--accent);
}

.verify-intro {
    margin-bottom: 28px;
    color: var(--text-dim);
    font-size: 1.05rem;
    line-height: 1.6;
}

.input-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.verify-input {
    flex: 1 1 300px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 16px 20px;
    color: var(--text-light);
    font-family: var(--font-mono);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.verify-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(60, 190, 242, 0.2);
}

.verify-input::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

.verify-button {
    background-color: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    padding: 16px 36px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all var(--transition-fast);
    font-weight: 600;
}

.verify-button:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
    box-shadow: 4px 4px 0 rgba(60, 190, 242, 0.3);
}

.verify-button:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 rgba(60, 190, 242, 0.3);
}

.validation-result {
    margin-top: 28px;
    padding: 18px 20px;
    display: none;
    word-break: break-word;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    border-left-width: 4px;
    border-left-style: solid;
}

.validation-result.success {
    display: block;
    background-color: var(--success-bg);
    border-left-color: var(--accent);
    color: var(--accent);
}

.validation-result.error {
    display: block;
    background-color: var(--error-bg);
    border-left-color: var(--error-text);
    color: var(--error-text);
}

.guide-section {
    background-color: var(--bg-tertiary);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.guide-item {
    background-color: var(--bg-card);
    padding: 28px;
    border-left: 4px solid var(--accent);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}

.guide-item:hover {
    transform: translateX(4px);
}

.guide-item h3 {
    color: var(--accent);
    margin-bottom: 14px;
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.5px;
}

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

.archive-footer {
    padding: 48px 0 40px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 2px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.footer-keywords {
    margin-top: 20px;
    font-size: 0.7rem;
    color: var(--border-light);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    word-spacing: 4px;
    opacity: 0.7;
}

.notification {
    position: fixed;
    top: 24px;
    right: 24px;
    background: var(--accent);
    color: var(--bg-primary);
    padding: 14px 28px;
    border: none;
    z-index: 10000;
    transform: translateX(150%);
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    font-weight: 600;
    font-family: var(--font-mono);
    max-width: 320px;
    word-break: break-word;
    box-shadow: var(--shadow-lg);
    border-radius: 0;
    font-size: 0.95rem;
}

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

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
        letter-spacing: 4px;
    }

    .hero {
        padding: 60px 0 48px;
    }

    .header-grid {
        flex-direction: column;
        align-items: flex-start;
    }

    .main-nav ul {
        gap: 20px;
        flex-wrap: wrap;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header {
        margin-bottom: 32px;
    }

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

    .review-card.full-width {
        grid-column: span 1;
    }

    .guide-grid {
        grid-template-columns: 1fr;
    }

    .verify-card {
        padding: 32px 24px;
    }

    .input-group {
        flex-direction: column;
    }

    .verify-button {
        width: 100%;
        padding: 14px;
    }

    section {
        padding: 50px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 1.8rem;
        letter-spacing: 3px;
    }

    .subhead {
        font-size: 1rem;
        padding-left: 16px;
    }

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

    .section-header h2 {
        font-size: 1.5rem;
    }

    .logo-area {
        flex-wrap: wrap;
    }

    .est-badge {
        font-size: 0.7rem;
    }

    .review-card {
        padding: 20px;
    }

    .guide-item {
        padding: 20px;
    }

    .verify-card {
        padding: 24px 16px;
    }

    .notification {
        top: 16px;
        right: 16px;
        left: 16px;
        max-width: none;
        text-align: center;
    }
}

@media (min-width: 1600px) {
    .container {
        max-width: 1400px;
    }
    
    .hero h1 {
        font-size: 3.8rem;
    }
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.stat-item {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--text-dim);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    background-color: rgba(0, 0, 0, 0.2);
}

.stat-value {
    color: var(--accent);
    font-weight: bold;
    margin-right: 6px;
    font-size: 1.1rem;
}

.section-intro {
    margin-bottom: 30px;
    color: var(--text-dim);
    font-size: 1.05rem;
    line-height: 1.6;
    max-width: 900px;
}

.link-status {
    color: #4ade80;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    margin-left: 8px;
}

.mirror-note {
    margin-top: 30px;
    padding: 20px;
    background-color: var(--bg-tertiary);
    border-left: 4px solid var(--accent);
    color: var(--text-dim);
    font-size: 0.95rem;
    line-height: 1.6;
}

.mirror-note p {
    margin: 0;
}

.mirror-note strong {
    color: var(--accent);
}

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.step-item {
    display: flex;
    gap: 20px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 0;
    transition: border-color var(--transition-fast);
}

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

.step-number {
    background-color: var(--accent);
    color: var(--bg-primary);
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: bold;
    padding: 20px;
    min-width: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--border-color);
}

.step-content {
    padding: 20px;
    flex: 1;
}

.step-content h3 {
    color: var(--accent);
    margin-bottom: 10px;
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.5px;
}

.step-content p {
    color: var(--text-dim);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

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

.security-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 25px;
    transition: border-color var(--transition-fast);
}

.security-card:hover {
    border-color: var(--accent);
}

.security-card h3 {
    color: var(--accent);
    margin-bottom: 15px;
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    border-bottom: 1px dashed var(--border-light);
    padding-bottom: 10px;
}

.security-card p {
    color: var(--text-dim);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 15px;
}

.security-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.security-list li {
    color: var(--text-dim);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 8px;
    padding-left: 24px;
    position: relative;
}

.security-list li:before {
    content: "→";
    color: var(--accent);
    position: absolute;
    left: 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.faq-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 20px;
    transition: border-color var(--transition-fast);
}

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

.faq-item h3 {
    color: var(--accent);
    margin-bottom: 12px;
    font-size: 1.1rem;
    font-weight: 400;
    line-height: 1.4;
}

.faq-item p {
    color: var(--text-dim);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.resource-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 20px;
    transition: all var(--transition-fast);
}

.resource-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: 5px 5px 0 var(--accent);
}

.resource-card h3 {
    color: var(--accent);
    margin-bottom: 12px;
    font-size: 1.1rem;
    font-weight: 400;
}

.resource-card p {
    color: var(--text-dim);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.updates-box {
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    padding: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.updates-box h3 {
    color: var(--accent);
    margin-bottom: 20px;
    font-size: 1.3rem;
    font-weight: 400;
    text-align: center;
    letter-spacing: 1px;
}

.update-feed {
    margin-bottom: 20px;
}

.update-item {
    display: flex;
    align-items: baseline;
    gap: 15px;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border-light);
    color: var(--text-dim);
    font-size: 0.95rem;
}

.update-item:last-child {
    border-bottom: none;
}

.update-time {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    min-width: 110px;
}

.update-note {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: center;
    margin-top: 15px;
    font-style: italic;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 30px;
    text-align: left;
}

.footer-section h4 {
    color: var(--accent);
    margin-bottom: 15px;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.footer-section p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
    margin: 0;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--accent);
}

.copyright {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
    color: var(--text-muted);
    font-size: 0.8rem;
}

@media (max-width: 1024px) {
    .resources-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .hero-stats {
        gap: 15px;
    }
    
    .stat-item {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    .security-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 25px;
        text-align: center;
    }
    
    .step-item {
        flex-direction: column;
    }
    
    .step-number {
        width: 100%;
        min-width: auto;
        padding: 12px;
        font-size: 1.2rem;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .update-item {
        flex-direction: column;
        gap: 5px;
    }
    
    .update-time {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 10px;
    }
    
    .stat-item {
        width: 100%;
    }
    
    .mirror-note {
        padding: 15px;
    }
    
    .security-card,
    .faq-item,
    .resource-card {
        padding: 15px;
    }
    
    .updates-box {
        padding: 20px;
    }
    
    .update-item {
        font-size: 0.85rem;
    }
}