/* ===== ABOUT PAGE ===== */
.about-hero {
    text-align: center;
    padding: 100px 20px 60px;
}

.about-hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.about-icon-wrapper {
    position: relative;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-hero-icon {
    width: 80px;
    height: 80px;
    object-fit: contain;
    filter: drop-shadow(0 4px 20px rgba(212, 168, 83, 0.2));
    animation: float 6s ease-in-out infinite;
}

.about-circle {
    position: absolute;
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.about-circle-1 {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    top: 15px;
    left: 0;
    animation-delay: 0s;
}

.about-circle-2 {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #8B5CF6, #A78BFA);
    top: 28px;
    left: 32px;
    animation-delay: -2s;
}

.about-circle-3 {
    width: 25px;
    height: 25px;
    background: linear-gradient(135deg, #A78BFA, #C4B5FD);
    top: 52px;
    left: 16px;
    animation-delay: -4s;
}

.about-title {
    font-size: 56px;
    font-weight: 900;
    margin: 0;
}

.about-title-gradient {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 30%, #EC4899 60%, #F472B6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-subtitle {
    font-size: 20px;
    color: #64748B;
    margin: 0;
}

.about-section {
    margin-bottom: 40px;
}

.about-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px;
    border: 1px solid #E2E8F0;
}

.about-card-primary {
    background: linear-gradient(135deg, rgba(99,102,241,0.05), rgba(139,92,246,0.05));
    border-color: rgba(99,102,241,0.1);
}

.about-card-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.about-icon-mission {
    background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(139,92,246,0.1));
}

.about-icon-contact {
    background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(251,146,60,0.1));
}

.about-card h2 {
    font-size: 24px;
    font-weight: 800;
    color: #1E293B;
    margin-bottom: 12px;
}

.about-card p {
    font-size: 16px;
    color: #64748B;
    line-height: 1.7;
    margin: 0;
}

.about-contact-links {
    display: flex;
    gap: 16px;
    margin-top: 20px;
}

.about-contact-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    color: #64748B;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.25s;
}

.about-contact-link:hover {
    background: #F1F5F9;
    border-color: #CBD5E1;
    color: #475569;
}

.about-features {
    margin-bottom: 40px;
}

.about-features-header {
    text-align: center;
    margin-bottom: 40px;
}

.about-features-header h2 {
    font-size: 32px;
    font-weight: 800;
    color: #1E293B;
    margin-bottom: 12px;
}

.about-features-header p {
    font-size: 16px;
    color: #64748B;
    margin: 0;
}

.about-features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.about-feature-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 32px;
    border: 1px solid var(--border-color);
    transition: all 0.25s;
}

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

.about-feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.about-feature-1 {
    background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(99,102,241,0.1));
    color: #3B82F6;
}

.about-feature-2 {
    background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(34,197,94,0.1));
    color: #10B981;
}

.about-feature-3 {
    background: linear-gradient(135deg, rgba(139,92,246,0.1), rgba(167,139,250,0.1));
    color: #8B5CF6;
}

.about-feature-4 {
    background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(251,146,60,0.1));
    color: #F59E0B;
}

.about-feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.about-feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

.about-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 40px;
    background: #fff;
    border-radius: 20px;
    border: 1px solid #E2E8F0;
    margin-bottom: 40px;
}

.about-stat-item {
    text-align: center;
    padding: 0 48px;
    flex: 1;
}

.about-stat-num {
    font-size: 40px;
    font-weight: 900;
    color: #1E293B;
    margin-bottom: 8px;
}

.about-stat-label {
    font-size: 14px;
    color: #64748B;
    font-weight: 500;
}

.about-stat-divider {
    width: 1px;
    height: 60px;
    background: #E2E8F0;
}

.about-desc {
    font-size: 16px;
    color: #94A3B8;
    margin: 0;
    max-width: 400px;
    text-align: center;
}

.about-intro {
    margin-bottom: 40px;
}

.about-intro-content {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 48px;
    border: 1px solid var(--border-color);
    display: flex;
    gap: 48px;
    align-items: flex-start;
}

.about-intro-text {
    flex: 1;
}

.about-intro-text h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.about-intro-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.about-intro-text p:last-child {
    margin-bottom: 0;
}

.about-intro-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    min-width: 240px;
}

.intro-stat {
    background: rgba(99, 102, 241, 0.05);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.intro-stat-num {
    font-size: 32px;
    font-weight: 900;
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.intro-stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.about-feature-5 {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(220, 38, 38, 0.1));
    color: #EF4444;
}

.about-feature-6 {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(37, 99, 235, 0.1));
    color: #3B82F6;
}

.about-workflow {
    margin-bottom: 40px;
}

.about-workflow-header {
    text-align: center;
    margin-bottom: 48px;
}

.about-workflow-header h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.about-workflow-header p {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
}

.about-workflow-steps {
    display: flex;
    justify-content: center;
    gap: 48px;
    position: relative;
}

.about-workflow-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 5%;
    right: 5%;
    height: 2px;
    background: linear-gradient(90deg, #6366F1, #8B5CF6, #EC4899);
}

.workflow-step {
    position: relative;
    text-align: center;
    max-width: 200px;
}

.step-number {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    color: #fff;
    z-index: 1;
}

.step-icon {
    width: 72px;
    height: 72px;
    background: var(--bg-card);
    border: 2px solid #6366F1;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.workflow-step h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.workflow-step p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.about-benefits {
    margin-bottom: 40px;
}

.about-benefits-header {
    text-align: center;
    margin-bottom: 40px;
}

.about-benefits-header h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
}

.about-benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.benefit-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 28px;
    border: 1px solid var(--border-color);
    transition: all 0.25s;
}

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

.benefit-icon {
    width: 52px;
    height: 52px;
    background: rgba(99, 102, 241, 0.08);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6366F1;
    margin-bottom: 16px;
}

.benefit-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.benefit-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.about-contact {
    margin-bottom: 40px;
}

.about-contact-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(139, 92, 246, 0.08));
    border-radius: 20px;
    padding: 48px;
    border: 1px solid rgba(99, 102, 241, 0.15);
    text-align: center;
}

.about-contact-icon {
    width: 72px;
    height: 72px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.about-contact-card h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.about-contact-card p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.about-contact-links {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.about-contact-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--bg-card);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.25s;
}

.about-contact-link:hover {
    background: #6366F1;
    color: #fff;
    border-color: #6366F1;
    transform: translateY(-2px);
}

@media (max-width: 1024px) {
    .about-intro-content {
        flex-direction: column;
        gap: 32px;
    }
    
    .about-intro-stats {
        min-width: auto;
    }
    
    .about-workflow-steps {
        gap: 24px;
    }
    
    .about-benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .about-intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-workflow-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .about-workflow-steps::before {
        display: none;
    }
    
    .about-benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .about-contact-links {
        flex-direction: column;
        align-items: center;
    }
    
    .about-contact-link {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }
}

.email-modal {
    max-width: 400px;
}

.email-modal-content {
    padding: 32px;
}

.email-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.email-text {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
    font-family: monospace;
}

.email-copy-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: #6366F1;
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s;
}

.email-copy-btn:hover {
    background: #4F46E5;
    transform: translateY(-2px);
}

.about-timeline {
    margin-bottom: 40px;
}

.about-timeline-header {
    text-align: center;
    margin-bottom: 48px;
}

.about-timeline-header h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.about-timeline-header p {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
}

.timeline-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 0;
}

.timeline-line-wrapper {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    transform: translateX(-50%);
    z-index: 0;
}

.timeline-line {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 0;
    background: linear-gradient(180deg, #6366F1, #8B5CF6, #EC4899);
    border-radius: 1px;
    transition: height 1.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.timeline-line.animated {
    height: 100%;
}

.timeline-line::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 10px;
    height: 10px;
    background: #EC4899;
    border-radius: 50%;
    box-shadow: 0 0 10px #EC4899, 0 0 20px #EC4899;
    animation: timelinePulse 2s ease-in-out infinite;
}

@keyframes timelinePulse {
    0%, 100% { transform: translateX(-50%) scale(1); opacity: 1; }
    50% { transform: translateX(-50%) scale(1.3); opacity: 0.7; }
}

.timeline-items {
    display: flex;
    flex-direction: column;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.timeline-item {
    position: relative;
    opacity: 0;
    transform: translateX(-50px) scale(0.95);
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    width: calc(50% - 20px);
}

.timeline-item:nth-child(odd) {
    margin-right: auto;
    align-items: flex-start;
}

.timeline-item:nth-child(even) {
    margin-left: auto;
    transform: translateX(50px) scale(0.95);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.timeline-item:nth-child(even).visible {
    transform: translateX(0) scale(1);
}

.timeline-item:nth-child(1) { transition-delay: 0.1s; }
.timeline-item:nth-child(2) { transition-delay: 0.25s; }
.timeline-item:nth-child(3) { transition-delay: 0.4s; }
.timeline-item:nth-child(4) { transition-delay: 0.55s; }
.timeline-item:nth-child(5) { transition-delay: 0.7s; }
.timeline-item:nth-child(6) { transition-delay: 0.85s; }
.timeline-item:nth-child(7) { transition-delay: 1.0s; }
.timeline-item:nth-child(8) { transition-delay: 1.15s; }
.timeline-item:nth-child(9) { transition-delay: 1.3s; }
.timeline-item:nth-child(10) { transition-delay: 1.45s; }

.timeline-dot-wrapper {
    position: absolute;
    top: 20px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-item:nth-child(odd) .timeline-dot-wrapper {
    right: -32px;
}

.timeline-item:nth-child(even) .timeline-dot-wrapper {
    left: -32px;
}

.timeline-dot {
    width: 12px;
    height: 12px;
    background: #6366F1;
    border-radius: 50%;
    border: 3px solid var(--bg-card);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

.timeline-dot::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50%;
    opacity: 0;
    transition: all 0.4s ease;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.5);
    box-shadow: 0 0 0 8px rgba(99, 102, 241, 0.2), 0 0 20px rgba(99, 102, 241, 0.4);
}

.timeline-item:hover .timeline-dot::before {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.5);
}

.timeline-content {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 28px;
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6366F1, #8B5CF6);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.timeline-item:hover .timeline-content {
    transform: translateY(-6px) perspective(800px) rotateX(2deg);
    box-shadow: var(--shadow-lg);
    border-color: rgba(99, 102, 241, 0.3);
}

.timeline-item:hover .timeline-content::before {
    transform: scaleX(1);
}

.timeline-content::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(99, 102, 241, 0.05) 0%, 
        transparent 50%,
        rgba(236, 72, 153, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.timeline-item:hover .timeline-content::after {
    opacity: 1;
}

.timeline-date {
    font-size: 14px;
    font-weight: 700;
    color: #6366F1;
    margin-bottom: 12px;
    letter-spacing: 1px;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.timeline-date::after {
    content: '';
    width: 20px;
    height: 2px;
    background: linear-gradient(90deg, #6366F1, transparent);
}

.timeline-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
    position: relative;
}

.timeline-title::first-letter {
    color: #6366F1;
}

.timeline-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
    position: relative;
}

.timeline-item[data-year="2026"] {
    width: 100%;
    margin: 0 auto;
    max-width: 500px;
}

.timeline-item[data-year="2026"] .timeline-dot-wrapper {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
}

.timeline-item[data-year="2026"] .timeline-dot {
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    width: 18px;
    height: 18px;
    top: 0;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.3), 0 0 15px rgba(99, 102, 241, 0.5);
    animation: milestonePulse 2.5s ease-in-out infinite;
}

@keyframes milestonePulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.3), 0 0 15px rgba(99, 102, 241, 0.5); }
    50% { box-shadow: 0 0 0 8px rgba(99, 102, 241, 0.2), 0 0 25px rgba(99, 102, 241, 0.6); }
}

.timeline-item[data-year="2026"] .timeline-content {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(139, 92, 246, 0.08));
    border-color: rgba(99, 102, 241, 0.2);
}

.timeline-item[data-year="2026"] .timeline-title {
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 24px;
}

.timeline-item[data-year="2026"] .timeline-date {
    font-size: 16px;
    color: #8B5CF6;
}

.timeline-float-icon {
    position: absolute;
    opacity: 0;
    animation: floatIcon 3s ease-in-out infinite;
}

@keyframes floatIcon {
    0%, 100% { opacity: 0; transform: translateY(0) scale(0.8); }
    20% { opacity: 0.6; }
    50% { opacity: 0.8; transform: translateY(-10px) scale(1); }
    80% { opacity: 0.6; }
}

@media (max-width: 768px) {
    .timeline-container {
        padding-left: 0;
    }
    
    .timeline-line-wrapper {
        left: 24px;
        transform: none;
    }
    
    .timeline-item {
        width: calc(100% - 50px);
        margin-left: 0 !important;
        margin-right: 0 !important;
        transform: translateX(50px) scale(0.95);
    }
    
    .timeline-item:nth-child(even) {
        transform: translateX(50px) scale(0.95);
    }
    
    .timeline-item.visible,
    .timeline-item:nth-child(even).visible {
        transform: translateX(0) scale(1);
    }
    
    .timeline-dot-wrapper {
        left: -32px !important;
        right: auto !important;
    }
    
    .timeline-item[data-year="2026"] {
        width: calc(100% - 50px);
    }
    
    .timeline-item[data-year="2026"] .timeline-dot-wrapper {
        left: -32px !important;
        transform: none;
    }
}


/* ===== ABOUT PAGE REDESIGN ===== */
:root {
    --about-bg-dark: #0A0A0A;
    --about-bg-light: #FAFAFA;
    --about-text-dark: #E5E5E5;
    --about-text-light: #1F2937;
    --about-card-bg-dark: rgba(255, 255, 255, 0.03);
    --about-card-bg-light: rgba(0, 0, 0, 0.02);
    --about-card-border-dark: rgba(255, 255, 255, 0.06);
    --about-card-border-light: rgba(0, 0, 0, 0.04);
    --about-header-bg-dark: rgba(10, 10, 10, 0.85);
    --about-header-bg-light: rgba(255, 255, 255, 0.85);
    --about-transition: color 0.4s ease, background-color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
    --about-glow: rgba(245, 158, 11, 0.4);
}

.about-dark {
    background-color: var(--about-bg-dark);
    color: var(--about-text-dark);
    transition: background-color 0.4s ease;
    overflow-x: hidden;
}

.about-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.about-particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: rgba(245, 158, 11, 0.3);
    border-radius: 50%;
    animation: floatParticle 15s infinite ease-in-out;
}

@keyframes floatParticle {
    0%, 100% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    50% {
        transform: translateY(50vh) scale(1);
        opacity: 0.4;
    }
    90% {
        opacity: 0.2;
    }
}

.about-dark .about-header,
.about-dark .mission-card,
.about-dark .section-card,
.about-dark .tech-terminal,
.about-dark .about-timeline-content,
.about-dark .contact-item {
    transition: var(--about-transition);
}

.about-dark .about-header {
    background: var(--about-header-bg-dark);
    border-bottom-color: rgba(255, 255, 255, 0.05);
}

.about-dark .about-header.scroll {
    background: rgba(15, 15, 15, 0.95);
}

.about-dark .about-logo {
    color: #E5E5E5;
}

.about-dark .about-nav a {
    color: #D1D5DB;
}

.about-dark .about-nav a:hover {
    color: #F59E0B;
}

.about-dark .about-my-link {
    color: #D1D5DB;
}

.about-dark .about-my-link:hover {
    color: #F59E0B;
}

.about-dark .about-theme-btn {
    border-color: rgba(255, 255, 255, 0.1);
    color: #9CA3AF;
}

.about-dark .about-theme-btn:hover {
    background: rgba(245, 158, 11, 0.1);
    color: #F59E0B;
    border-color: rgba(245, 158, 11, 0.3);
}

.about-dark .chapter-bg {
    background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 0% 100%, rgba(245, 158, 11, 0.1) 0%, transparent 50%),
                radial-gradient(ellipse at 100% 50%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
}

.about-dark .prologue-title {
    background: linear-gradient(135deg, #E5E5E5 0%, #9CA3AF 50%, #E5E5E5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-dark .prologue-subtitle {
    color: #9CA3AF;
    letter-spacing: 8px;
    text-transform: uppercase;
}

.about-dark .stat-num {
    color: #F59E0B;
    text-shadow: 0 0 40px rgba(245, 158, 11, 0.3);
}

.about-dark .stat-label {
    color: #6B7280;
    letter-spacing: 2px;
}

.about-dark .prologue-scroll-hint {
    color: #6B7280;
    animation: pulseGlow 2s ease-in-out infinite;
}

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

.about-dark .chapter-title {
    color: #FFFFFF;
    font-weight: 900;
    letter-spacing: -2px;
}

.about-dark .chapter-desc {
    color: #9CA3AF;
    font-style: italic;
}

.about-dark .mission-card {
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.about-dark .mission-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(245, 158, 11, 0.05), transparent);
    transition: left 0.6s ease;
}

.about-dark .mission-card:hover::before {
    left: 100%;
}

.about-dark .mission-card:hover {
    border-color: rgba(245, 158, 11, 0.3);
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.1);
    transform: translateY(-5px);
}

.about-dark .mission-card h3 {
    color: #E5E5E5;
}

.about-dark .mission-card p {
    color: #9CA3AF;
}

.about-dark .section-card {
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.about-dark .section-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.1);
    transform: translateY(-3px);
}

.about-dark .section-info h3 {
    color: #FFFFFF;
    letter-spacing: 1px;
}

.about-dark .section-info p {
    color: #9CA3AF;
}

.about-dark .tech-terminal {
    background: rgba(0, 0, 0, 0.7);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
}

.about-dark .terminal-header {
    background: rgba(0, 0, 0, 0.5);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

.about-dark .terminal-title {
    color: #9CA3AF;
    letter-spacing: 2px;
}

.about-dark .terminal-text {
    color: #D1D5DB;
    font-family: 'Fira Code', 'Consolas', monospace;
}

.about-dark .code-comment {
    color: #6B7280;
}

.about-dark .terminal-prompt {
    color: #34D399;
}

.about-dark .code-keyword {
    color: #F472B6;
    font-weight: 600;
}

.about-dark .code-punctuation {
    color: #9CA3AF;
}

.about-dark .terminal-cursor {
    color: #FBBF24;
}

.about-dark .timeline-hero {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
}

.about-dark .timeline-date-display {
    color: rgba(245, 158, 11, 0.2);
}

.about-dark .timeline-event-display {
    color: #E5E5E5;
}

.about-dark .timeline-content {
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.04);
}

.about-dark .timeline-title {
    color: #E5E5E5;
}

.about-dark .timeline-desc {
    color: #9CA3AF;
}

.about-dark .timeline-dot {
    border-color: #0F0F0F;
}

.about-dark .epilogue-title {
    color: rgba(245, 158, 11, 0.15);
}

.about-dark .epilogue-subtitle {
    color: #6B7280;
}

.about-dark .epilogue-footer {
    color: #6B7280;
}

.about-dark .epilogue-footer span:last-child {
    color: #F59E0B;
}

[data-theme="light"] .about-dark {
    background-color: var(--about-bg-light);
    color: var(--about-text-light);
    transition: background-color 0.3s ease;
}

[data-theme="light"] .about-header,
[data-theme="light"] .mission-card,
[data-theme="light"] .section-card,
[data-theme="light"] .tech-terminal,
[data-theme="light"] .timeline-content,
[data-theme="light"] .contact-item {
    transition: var(--about-transition);
}

[data-theme="light"] .about-header {
    background: var(--about-header-bg-light);
    border-bottom-color: rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .about-header.scroll {
    background: rgba(255, 255, 255, 0.95);
}

[data-theme="light"] .about-logo {
    color: #1F2937;
}

[data-theme="light"] .about-nav a {
    color: #374151;
}

[data-theme="light"] .about-nav a:hover {
    color: #D97706;
}

[data-theme="light"] .about-my-link {
    color: #374151;
}

[data-theme="light"] .about-my-link:hover {
    color: #D97706;
}

[data-theme="light"] .about-nav a::after {
    background: linear-gradient(90deg, #D97706, #6366F1);
}

[data-theme="light"] .about-theme-btn {
    border-color: rgba(0, 0, 0, 0.1);
    color: #6B7280;
}

[data-theme="light"] .about-theme-btn:hover {
    background: rgba(217, 119, 6, 0.1);
    color: #D97706;
    border-color: rgba(217, 119, 6, 0.3);
}

[data-theme="light"] .chapter-bg {
    background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 0% 100%, rgba(245, 158, 11, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 100% 50%, rgba(236, 72, 153, 0.04) 0%, transparent 50%);
}

[data-theme="light"] .prologue-title {
    background: linear-gradient(135deg, #1F2937 0%, #6B7280 50%, #1F2937 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="light"] .prologue-subtitle {
    color: #6B7280;
}

[data-theme="light"] .stat-num {
    color: #D97706;
}

[data-theme="light"] .stat-label {
    color: #9CA3AF;
}

[data-theme="light"] .prologue-scroll-hint {
    color: #9CA3AF;
}

[data-theme="light"] .chapter-title {
    color: #1F2937;
}

[data-theme="light"] .chapter-desc {
    color: #6B7280;
}

[data-theme="light"] .mission-card {
    background: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .mission-card h3 {
    color: #1F2937;
}

[data-theme="light"] .mission-card p {
    color: #6B7280;
}

[data-theme="light"] .section-card {
    background: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .section-info h3 {
    color: #1F2937;
}

[data-theme="light"] .section-info p {
    color: #6B7280;
}

[data-theme="light"] .tech-terminal {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .terminal-header {
    background: rgba(0, 0, 0, 0.05);
    border-bottom-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .terminal-title {
    color: #6B7280;
}

[data-theme="light"] .terminal-text {
    color: #4B5563;
}

[data-theme="light"] .code-comment {
    color: #9CA3AF;
}

[data-theme="light"] .about-timeline-hero {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(245, 158, 11, 0.03) 100%);
}

[data-theme="light"] .about-timeline-date-display {
    color: rgba(217, 119, 6, 0.25);
}

[data-theme="light"] .about-timeline-event-display {
    color: #1F2937;
}

[data-theme="light"] .about-timeline-content {
    background: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .about-timeline-title {
    color: #1F2937;
}

[data-theme="light"] .about-timeline-desc {
    color: #6B7280;
}

[data-theme="light"] .about-timeline-dot {
    border-color: #FAFAFA;
}

[data-theme="light"] .epilogue-title {
    color: rgba(217, 119, 6, 0.15);
}

[data-theme="light"] .epilogue-subtitle {
    color: #9CA3AF;
}

[data-theme="light"] .epilogue-footer {
    color: #9CA3AF;
}

[data-theme="light"] .epilogue-footer span:last-child {
    color: #D97706;
}

.about-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: color-mix(in srgb, var(--bg-body) 92%, transparent);
}

.about-header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 40px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 20px;
}

.about-logo {
    justify-self: start;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 700;
    font-family: inherit;
    text-decoration: none;
}

.about-logo img {
    filter: drop-shadow(0 0 10px rgba(245, 158, 11, 0.5));
}

.about-nav {
    justify-self: center;
    display: flex;
    gap: 30px;
}

.about-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    position: relative;
    transition: color 0.3s ease;
    line-height: 1.4;
    display: inline-flex;
    align-items: center;
}

.about-nav a:hover {
    color: #F59E0B;
}

.about-nav a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #F59E0B, #6366F1);
    transition: width 0.3s ease;
}

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

.header-right {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 14px;
}

.about-my-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    line-height: 1.4;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    padding: 2px 0;
}

.about-my-link:hover {
    color: #F59E0B;
}

.about-theme-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: all 0.3s ease;
}

.about-theme-btn:hover {
    background: rgba(245, 158, 11, 0.1);
    color: #F59E0B;
    border-color: rgba(245, 158, 11, 0.3);
}

.about-main {
    min-height: 100vh;
}

.chapter {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 40px 40px;
}

.chapter-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 0% 100%, rgba(245, 158, 11, 0.1) 0%, transparent 50%),
                radial-gradient(ellipse at 100% 50%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
}

.chapter-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
}

.chapter-wide {
    max-width: 1200px;
}

.chapter-header {
    margin-bottom: 60px;
}

.chapter-label {
    font-size: 14px;
    color: #F59E0B;
    font-weight: 600;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.chapter-title {
    font-size: 64px;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.1;
}

.chapter-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-top: 12px;
}

.prologue {
    justify-content: flex-start;
    flex-direction: column;
    padding-top: 150px;
}

.prologue-image {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.3;
}

.prologue-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(2px) brightness(0.7);
}

.prologue-text {
    text-align: center;
    animation: fadeInUp 1s ease;
}

.prologue-label {
    font-size: 16px;
    color: #F59E0B;
    font-weight: 600;
    letter-spacing: 4px;
    margin-bottom: 20px;
}

.prologue-title {
    font-size: 120px;
    font-weight: 900;
    color: var(--text-primary);
    margin: 0;
    line-height: 1;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 50%, var(--text-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

.prologue-subtitle {
    font-size: 24px;
    color: var(--text-secondary);
    margin-top: 20px;
    font-weight: 300;
    letter-spacing: 2px;
}

.prologue-decor {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 40px;
}

.decor-line {
    width: 80px;
    height: 1px;
    background: linear-gradient(90deg, transparent, #F59E0B);
}

.decor-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #F59E0B;
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
}

.prologue-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
}

.prologue-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.stat-num {
    font-size: 40px;
    font-weight: 800;
    color: #F59E0B;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.prologue-scroll-hint {
    position: absolute;
    bottom: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 14px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

.mission-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.mission-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.mission-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 16/9;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.mission-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.4s ease;
}

.mission-card:hover {
    background: var(--bg-card);
    border-color: color-mix(in srgb, #F59E0B 40%, transparent);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.mission-icon {
    margin-bottom: 20px;
    filter: drop-shadow(0 0 15px rgba(245, 158, 11, 0.3));
}

.mission-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 12px;
}

.mission-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

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

.section-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 24px;
    transition: all 0.4s ease;
}

.section-card:hover {
    background: var(--bg-card);
    border-color: color-mix(in srgb, #6366F1 40%, transparent);
    transform: translateX(8px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
}

.section-icon-wrap {
    width: 70px;
    height: 70px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.section-icon-1 { background: rgba(99, 102, 241, 0.15); color: #818CF8; }
.section-icon-2 { background: rgba(139, 92, 246, 0.15); color: #A78BFA; }
.section-icon-3 { background: rgba(236, 72, 153, 0.15); color: #F472B6; }
.section-icon-4 { background: rgba(245, 158, 11, 0.15); color: #FBBF24; }
.section-icon-5 { background: rgba(16, 185, 129, 0.15); color: #34D399; }
.section-icon-6 { background: rgba(59, 130, 246, 0.15); color: #60A5FA; }
.section-icon-7 { background: rgba(249, 115, 22, 0.15); color: #FB923C; }

.section-info h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 6px;
}

.section-info p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0 0 8px;
    line-height: 1.5;
}

.section-count {
    font-size: 12px;
    color: #F59E0B;
    font-weight: 600;
}

.tech-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.tech-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.tech-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 16/9;
}

.tech-terminal {
    background: #F8FAFC;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 16px;
    overflow: hidden;
    max-width: 700px;
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(15, 23, 42, 0.04);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot.red { background: #EF4444; }
.dot.yellow { background: #F59E0B; }
.dot.green { background: #10B981; }

.terminal-title {
    font-size: 13px;
    color: #334155;
    font-family: 'SF Mono', 'Monaco', monospace;
}

.terminal-body {
    padding: 24px;
    font-family: 'SF Mono', 'Monaco', monospace;
    font-size: 14px;
    line-height: 2;
}

.terminal-line {
    margin-bottom: 8px;
}

.terminal-prompt {
    color: #059669;
    margin-right: 8px;
}

.terminal-text {
    color: #1F2937;
}

.terminal-code {
    padding-left: 24px;
    margin-bottom: 16px;
}

.code-keyword {
    color: #DB2777;
    font-weight: 600;
}

.code-punctuation {
    color: #475569;
    margin: 0 4px;
}

.code-comment {
    color: #64748B;
    margin-left: 12px;
}

.terminal-cursor {
    display: inline-block;
    color: #D97706;
    animation: blink 1s step-end infinite;
}

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

.about-timeline-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.about-timeline-hero-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-timeline-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.about-timeline-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4/3;
}

.about-timeline-hero {
    position: relative;
    height: 200px;
    margin-bottom: 60px;
    border-radius: 16px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-timeline-scanline {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent, rgba(245, 158, 11, 0.8), transparent);
    animation: scanline 3s linear infinite;
}

@keyframes scanline {
    0% { top: -10%; }
    100% { top: 110%; }
}

.about-timeline-display {
    text-align: center;
}

.about-timeline-date-display {
    font-size: 72px;
    font-weight: 900;
    color: rgba(245, 158, 11, 0.3);
    margin-bottom: 8px;
}

.about-timeline-event-display {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}
.about-dark .about-timeline-event-display {
    color: #FFFFFF;
}

.about-timeline-status {
    font-size: 12px;
    color: #34D399;
    letter-spacing: 3px;
    font-weight: 600;
}

.about-timeline-list {
    position: relative;
    width: 100%;
    padding: 0;
}

.about-timeline-list::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, rgba(245, 158, 11, 0.6), rgba(245, 158, 11, 0.2), rgba(245, 158, 11, 0.05));
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.2);
}

.about-timeline-item {
    position: relative;
    padding-bottom: 60px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
}

.about-timeline-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.about-timeline-item:last-child {
    padding-bottom: 0;
}

.about-timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 15px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #F59E0B;
    border: 3px solid var(--bg-card);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.6), 0 0 40px rgba(245, 158, 11, 0.3);
    z-index: 2;
    transition: all 0.3s ease;
}
.about-dark .about-timeline-dot {
    border-color: #0A0A0A;
}

.about-timeline-item:hover .about-timeline-dot {
    transform: translateX(-50%) scale(1.3);
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.8), 0 0 60px rgba(245, 158, 11, 0.4);
}

.about-timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    width: calc(50% - 40px);
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    width: 12px;
    height: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transform: rotate(45deg);
}

.about-timeline-item:nth-child(odd) .about-timeline-content {
    margin-right: auto;
}

.about-timeline-item:nth-child(odd) .about-timeline-content::before {
    right: -6px;
    border-left: none;
    border-bottom: none;
}

.about-timeline-item:nth-child(even) .about-timeline-content {
    margin-left: auto;
}

.about-timeline-item:nth-child(even) .about-timeline-content::before {
    left: -6px;
    border-right: none;
    border-top: none;
}

.about-timeline-item:hover .about-timeline-content {
    border-color: rgba(245, 158, 11, 0.3);
    box-shadow: 0 15px 40px rgba(245, 158, 11, 0.1);
    transform: translateY(-5px);
}

.about-timeline-date {
    font-size: 12px;
    color: #F59E0B;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.about-timeline-title {
    font-size: 18px;
    font-weight: 700;
    color: #E5E5E5;
    margin-bottom: 8px;
}

.about-timeline-desc {
    font-size: 14px;
    color: #6B7280;
    line-height: 1.5;
}

.contact-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    max-width: 600px;
    margin: 0 auto;
}

.contact-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(245, 158, 11, 0.1) 50%, rgba(236, 72, 153, 0.08) 100%);
}

.contact-content {
    position: relative;
    z-index: 2;
    padding: 60px;
    text-align: center;
}

.contact-icon {
    margin-bottom: 30px;
    filter: drop-shadow(0 0 20px rgba(245, 158, 11, 0.4));
}

.contact-content h3 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 16px;
}

.contact-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0 0 40px;
}

.contact-info {
    display: flex;
    justify-content: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 24px;
}

.contact-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.contact-value {
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 500;
}

.contact-copy {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 8px;
    padding: 6px 16px;
    color: #F59E0B;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.contact-copy:hover {
    background: rgba(245, 158, 11, 0.25);
}

html[data-theme="light"] .contact-content h3 {
    color: #0F172A;
}
html[data-theme="light"] .contact-content p {
    color: #374151;
}
html[data-theme="light"] .contact-label {
    color: #4B5563;
}
html[data-theme="light"] .contact-value {
    color: #111827;
}
html[data-theme="light"] .contact-item {
    background: rgba(15, 23, 42, 0.06);
    border-color: rgba(15, 23, 42, 0.1);
}
html[data-theme="light"] .contact-copy {
    background: #D97706;
    border-color: #B45309;
    color: #FFFBEB;
    box-shadow: 0 2px 8px rgba(217, 119, 6, 0.25);
}
html[data-theme="light"] .contact-copy:hover {
    background: #B45309;
    border-color: #92400E;
}
html[data-theme="eye-care"] .contact-content h3 {
    color: #22493A;
}
html[data-theme="eye-care"] .contact-content p,
html[data-theme="eye-care"] .contact-label {
    color: #3C6B55;
}
html[data-theme="eye-care"] .contact-value {
    color: #1F4A38;
}
html[data-theme="warm"] .contact-content h3 {
    color: #3D2E14;
}
html[data-theme="warm"] .contact-content p,
html[data-theme="warm"] .contact-label {
    color: #5C4725;
}
html[data-theme="warm"] .contact-value {
    color: #4A3919;
}

.epilogue {
    min-height: 60vh;
    flex-direction: column;
    padding-bottom: 100px;
}

.epilogue-content {
    text-align: center;
}

.epilogue-title {
    font-size: 80px;
    font-weight: 900;
    color: rgba(245, 158, 11, 0.2);
    margin: 0;
}

.epilogue-subtitle {
    font-size: 20px;
    color: #4B5563;
    margin-top: 16px;
    letter-spacing: 3px;
}

.epilogue-line {
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(245, 158, 11, 0.5), transparent);
    margin: 40px auto;
}

.epilogue-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    font-size: 14px;
    color: #4B5563;
}

.epilogue-footer span:last-child {
    color: #F59E0B;
}

.chapter-enter {
    animation: chapterFadeIn 0.8s ease forwards;
}

@keyframes chapterFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .about-header-content {
        padding: 16px 20px;
        grid-template-columns: auto 1fr auto;
        gap: 12px;
    }
    
    .about-nav {
        gap: 12px;
    }
    
    .about-nav a {
        font-size: 12px;
    }
    
    .about-my-link {
        font-size: 12px;
    }
    
    .chapter {
        padding: 100px 20px 40px;
        min-height: auto;
    }
    
    .prologue-title {
        font-size: 64px;
    }
    
    .prologue-subtitle {
        font-size: 16px;
    }
    
    .prologue-stats {
        gap: 30px;
    }
    
    .stat-num {
        font-size: 28px;
    }
    
    .chapter-title {
        font-size: 40px;
    }
    
    .prologue-image {
        display: none;
    }
    
    .mission-container,
    .tech-container,
    .about-timeline-container {
        grid-template-columns: 1fr;
    }
    
    .about-timeline-hero-section {
        grid-template-columns: 1fr;
    }
    
    .mission-image,
    .tech-image,
    .about-timeline-image {
        order: -1;
    }
    
    .about-timeline-content {
        width: 100% !important;
    }
    
    .about-timeline-item:nth-child(odd) .about-timeline-content,
    .about-timeline-item:nth-child(even) .about-timeline-content {
        margin-left: 0 !important;
        margin-right: 0 !important;
    }
    
    .mission-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .sections-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .section-card {
        padding: 20px;
    }
    
    .tech-terminal {
        margin: 0 -20px;
        border-radius: 0;
    }
    
    .timeline-date-display {
        font-size: 48px;
    }
    
    .timeline-event-display {
        font-size: 20px;
    }
    
    .contact-content {
        padding: 40px 20px;
    }
    
    .contact-content h3 {
        font-size: 24px;
    }
    
    .epilogue-title {
        font-size: 48px;
    }
}


/* ===== ABOUT 页深色适配（严格对齐 mission-card / section-card 风格） ===== */
.about-dark .data-manager {
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.05);
    box-shadow: none;
}
.about-dark .data-manager::before {
    opacity: 0.7;
}
.about-dark .data-manager:hover {
    border-color: rgba(245, 158, 11, 0.3);
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.1);
}

/* ===== ABOUT 页浅色适配 ===== */
[data-theme="light"] .about-dark .data-manager {
    background: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.05);
    box-shadow: none;
}
[data-theme="light"] .about-dark .data-manager:hover {
    border-color: rgba(217, 119, 6, 0.3);
    box-shadow: 0 0 30px rgba(217, 119, 6, 0.08);
}

.data-manager-head {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}
.data-manager-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(139,92,246,0.12));
    color: var(--accent-color, #6366F1);
    flex-shrink: 0;
    transition: all 0.3s ease;
}
.about-dark .data-manager-icon {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(99, 102, 241, 0.15));
    color: #F59E0B;
}
[data-theme="light"] .about-dark .data-manager-icon {
    background: linear-gradient(135deg, rgba(217, 119, 6, 0.1), rgba(99, 102, 241, 0.1));
    color: #D97706;
}
.data-manager-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}
.about-dark .data-manager-title {
    color: #F5F5F5;
}
[data-theme="light"] .about-dark .data-manager-title {
    color: #1F2937;
}
.data-manager-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
    line-height: 1.6;
}
.about-dark .data-manager-sub {
    color: #9CA3AF;
}
[data-theme="light"] .about-dark .data-manager-sub {
    color: #6B7280;
}

.data-manager-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}
.data-stat {
    padding: 16px 18px;
    background: var(--bg-body);
    border-radius: 14px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}
.data-stat::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color, #6366F1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.data-stat:hover {
    transform: translateY(-3px);
    border-color: var(--accent-color, #6366F1);
    box-shadow: 0 8px 20px rgba(99,102,241,0.1);
}
.data-stat:hover::after { opacity: 1; }

.about-dark .data-stat {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.06);
}
.about-dark .data-stat:hover {
    border-color: rgba(245, 158, 11, 0.35);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.08);
}
.about-dark .data-stat::after {
    background: linear-gradient(90deg, #F59E0B, transparent);
}

[data-theme="light"] .about-dark .data-stat {
    background: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.06);
}
[data-theme="light"] .about-dark .data-stat:hover {
    border-color: rgba(217, 119, 6, 0.35);
    box-shadow: 0 8px 20px rgba(217, 119, 6, 0.08);
}
[data-theme="light"] .about-dark .data-stat::after {
    background: linear-gradient(90deg, #D97706, transparent);
}

.data-stat-label {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}
.about-dark .data-stat-label { color: #6B7280; }
[data-theme="light"] .about-dark .data-stat-label { color: #9CA3AF; }

.data-stat-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-color, #6366F1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.about-dark .data-stat-value {
    background: linear-gradient(135deg, #F59E0B, #FBBF24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
[data-theme="light"] .about-dark .data-stat-value {
    background: linear-gradient(135deg, #D97706, #F59E0B);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.data-manager-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    position: relative;
    z-index: 1;
}
.dm-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 18px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-primary);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    position: relative;
    overflow: hidden;
}
.dm-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
    opacity: 0;
    transition: opacity 0.25s ease;
}
.dm-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0,0,0,0.08);
}
.dm-btn:hover::after { opacity: 1; }

.about-dark .dm-btn {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
    color: #D1D5DB;
}
.about-dark .dm-btn:hover {
    border-color: rgba(245, 158, 11, 0.4);
    color: #F59E0B;
    background: rgba(245, 158, 11, 0.08);
}

[data-theme="light"] .about-dark .dm-btn {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.08);
    color: #374151;
}
[data-theme="light"] .about-dark .dm-btn:hover {
    border-color: rgba(217, 119, 6, 0.35);
    color: #D97706;
    background: rgba(217, 119, 6, 0.06);
}

.dm-btn.primary {
    background: linear-gradient(135deg, #10B981, #059669);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(16,185,129,0.28);
}
.dm-btn.primary:hover {
    color: #fff;
    filter: brightness(1.05);
    box-shadow: 0 6px 18px rgba(16,185,129,0.38);
}
.dm-btn.danger {
    background: linear-gradient(135deg, #F97316, #EF4444);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(249,115,22,0.28);
}
.dm-btn.danger:hover {
    color: #fff;
    filter: brightness(1.05);
    box-shadow: 0 6px 18px rgba(249,115,22,0.38);
}

.dm-import-input { display: none; }

/* ===== CSS Visual Replacements for External Images ===== */

.prologue-visual {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lamp-glow {
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,200,100,0.8) 0%, rgba(255,180,80,0.4) 40%, transparent 70%);
    border-radius: 50%;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

.lamp-shade {
    position: relative;
    width: 120px;
    height: 80px;
    background: linear-gradient(180deg, rgba(60,60,60,0.9) 0%, rgba(40,40,40,0.95) 100%);
    border-radius: 10px 10px 60px 60px;
    z-index: 2;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.lamp-shade::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 10px;
    background: rgba(255,200,100,0.6);
    border-radius: 0 0 40px 40px;
}

.lamp-base {
    position: absolute;
    bottom: 20%;
    width: 40px;
    height: 100px;
    background: linear-gradient(90deg, #8B7355, #A08060, #8B7355);
    border-radius: 4px;
    z-index: 1;
}

.study-visual {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding-bottom: 20px;
}

.desk-surface {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 60px;
    background: linear-gradient(180deg, #8B7355 0%, #6B5344 100%);
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.book-stack {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
}

.book {
    width: 80px;
    height: 10px;
    border-radius: 2px;
    margin-bottom: 3px;
}

.book-1 {
    background: linear-gradient(180deg, #6366F1, #4F46E5);
    width: 90px;
}

.book-2 {
    background: linear-gradient(180deg, #EC4899, #DB2777);
    width: 85px;
}

.book-3 {
    background: linear-gradient(180deg, #10B981, #059669);
    width: 80px;
}

.laptop-icon {
    position: relative;
    width: 100px;
    height: 60px;
    background: #1F2937;
    border-radius: 8px;
    margin-top: 30px;
    z-index: 2;
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.laptop-icon::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 20px;
    background: #0F172A;
    border-radius: 4px;
    border: 1px solid #374151;
}

.laptop-icon::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 12px;
    background: #374151;
    border-radius: 0 0 4px 4px;
}

.lamp-glow-small {
    position: absolute;
    top: 20%;
    right: 20%;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(255,200,100,0.4) 0%, transparent 70%);
    border-radius: 50%;
    animation: glowPulse 4s ease-in-out infinite;
}

.code-visual {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.code-screen {
    position: relative;
    width: 90%;
    height: 80%;
    background: #0F172A;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.code-line {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 16px;
    line-height: 1.6;
}

.code-keyword { color: #C678DD; }
.code-var { color: #E5C07B; }
.code-string { color: #98C379; }
.code-func { color: #61AFEF; }
.code-indent { display: inline-block; width: 2em; }

.code-cursor {
    display: inline-block;
    width: 8px;
    height: 20px;
    background: #E5C07B;
    animation: cursorBlink 1s step-end infinite;
    margin-left: 2px;
}

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

.neon-border {
    position: absolute;
    inset: -4px;
    border-radius: 16px;
    background: linear-gradient(135deg, #6366F1, #EC4899, #10B981);
    opacity: 0.5;
    filter: blur(8px);
    z-index: -1;
    animation: neonPulse 3s ease-in-out infinite;
}

@keyframes neonPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

.hourglass-visual {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hourglass-top,
.hourglass-bottom {
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50% 50% 0 0;
    position: relative;
}

.hourglass-bottom {
    border-radius: 0 0 50% 50%;
    margin-top: -2px;
}

.hourglass-neck {
    width: 12px;
    height: 20px;
    background: rgba(255,255,255,0.2);
    border-left: 2px solid rgba(255,255,255,0.3);
    border-right: 2px solid rgba(255,255,255,0.3);
}

.sand-flow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 4px;
    height: 30px;
    background: linear-gradient(180deg, #F59E0B 0%, transparent 100%);
    animation: sandFlow 2s linear infinite;
}

@keyframes sandFlow {
    0% { height: 0; opacity: 0; }
    10% { height: 30px; opacity: 1; }
    90% { height: 30px; opacity: 1; }
    100% { height: 0; opacity: 0; }
}

.sand-pile {
    position: absolute;
    bottom: 40%;
    width: 40px;
    height: 20px;
    background: #F59E0B;
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    animation: sandPileGrow 2s ease-in-out infinite;
}

@keyframes sandPileGrow {
    0%, 100% { width: 20px; height: 10px; }
    50% { width: 40px; height: 20px; }
}

[data-theme="light"] .code-screen {
    background: #1A1A1A;
}

[data-theme="light"] .hourglass-top,
[data-theme="light"] .hourglass-bottom {
    background: rgba(0,0,0,0.05);
    border-color: rgba(0,0,0,0.2);
}

[data-theme="light"] .hourglass-neck {
    background: rgba(0,0,0,0.1);
    border-color: rgba(0,0,0,0.2);
}