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

:root {
    --container: 1180px;
    --primary-blue: #0066cc;
    --dark-blue: #003d99;
    --light-blue: #e6f0ff;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --border-light: #ddd;
    --border-lighter: #eee;
    --success-green: #00b341;
    --warning-orange: #ff9500;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    background-color: #f9f9f9;
    line-height: 1.6;
}

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

.image-box,
.route-media,
.station-media,
.preview-frame {
    overflow: visible;
    line-height: 0;
}

.image-box img,
.route-media img,
.station-media img,
.preview-frame img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.container {
    width: min(100% - 32px, var(--container));
    margin-inline: auto;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    background: white;
    border-bottom: 1px solid var(--border-lighter);
    z-index: 100;
    padding: 16px 0;
}

.header-container {
    width: min(100% - 32px, var(--container));
    margin-inline: auto;
    display: flex;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-blue);
}

/* PC Route Navigation */
.route-nav-pc {
    position: fixed;
    right: 32px;
    top: 120px;
    z-index: 90;
}

.route-nav-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.route-point {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
}

.route-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-light);
    border: 2px solid white;
    transition: all 0.3s ease;
}

.route-point.active .route-dot {
    background: var(--primary-blue);
    box-shadow: 0 0 8px rgba(0, 102, 204, 0.5);
}

.route-label {
    font-size: 12px;
    color: var(--text-light);
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.route-point:hover .route-label {
    opacity: 1;
}

.route-point.active .route-label {
    opacity: 1;
    color: var(--primary-blue);
}

.route-line {
    width: 2px;
    height: 12px;
    background: linear-gradient(to bottom, var(--border-light), transparent);
}

/* Mobile Route Navigation */
.route-nav-mobile {
    display: none;
}

@media (max-width: 768px) {
    .route-nav-pc {
        display: none;
    }

    .route-nav-mobile {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: white;
        border-top: 1px solid var(--border-lighter);
        z-index: 100;
    }

    .mobile-point {
        flex: 1;
        padding: 12px;
        text-align: center;
        color: var(--text-light);
        text-decoration: none;
        font-size: 12px;
        border-right: 1px solid var(--border-lighter);
        transition: all 0.3s ease;
    }

    .mobile-point:last-child {
        border-right: none;
    }

    .mobile-point.active {
        color: var(--primary-blue);
        background: var(--light-blue);
        font-weight: 600;
    }
}

/* Sections */
.section {
    padding: 40px 0;
    background: white;
    margin-bottom: 1px solid var(--border-lighter);
}

.section h2 {
    font-size: 24px;
    margin-bottom: 28px;
    color: var(--text-dark);
    font-weight: 600;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

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

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

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

.btn-secondary:hover {
    background: var(--light-blue);
}

/* Hero Section */
.hero {
    padding: 50px 0;
    background: linear-gradient(135deg, rgba(230, 240, 255, 0.5) 0%, rgba(255, 255, 255, 0.5) 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: center;
    margin-bottom: 36px;
}

.hero-content {
    padding: 0;
}

.route-tag {
    display: inline-block;
    font-size: 11px;
    color: var(--primary-blue);
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.hero h1 {
    font-size: 28px;
    line-height: 1.4;
    margin-bottom: 16px;
    color: var(--text-dark);
    font-weight: 600;
}

.hero-desc {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.security-notice {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    background: rgba(255, 149, 0, 0.1);
    padding: 10px 12px;
    border-left: 3px solid var(--warning-orange);
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-dark);
    line-height: 1.5;
}

.notice-icon {
    font-size: 16px;
    flex-shrink: 0;
}

/* Hero Card */
.hero-card {
    padding: 0;
}

.station-card {
    background: white;
    border: 1px solid var(--border-lighter);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.station-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.station-card.large {
    position: relative;
}

.route-media {
    width: 100%;
    max-height: 300px;
    overflow: hidden;
}

.station-image {
    width: 100%;
    height: auto;
}

.station-nodes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    padding: 12px;
    background: var(--light-blue);
}

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

.node-label {
    display: inline-block;
    padding: 6px 12px;
    background: white;
    border: 1px solid var(--primary-blue);
    border-radius: 4px;
    font-size: 11px;
    color: var(--primary-blue);
    font-weight: 500;
}

/* Route Preview */
.route-preview {
    background: var(--light-blue);
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
}

.route-preview-scroll {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-width: fit-content;
}

.preview-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    flex-shrink: 0;
}

.preview-point {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-blue);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
}

.preview-text {
    font-size: 11px;
    color: var(--text-dark);
    white-space: nowrap;
}

.preview-arrow {
    color: var(--primary-blue);
    font-size: 14px;
    flex-shrink: 0;
}

/* Station Grid */
.station-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    align-items: flex-start;
}

.station-panel {
    background: white;
    border: 1px solid var(--border-lighter);
    border-radius: 8px;
    padding: 18px;
}

.station-info {
    display: flex;
    flex-direction: column;
}

.info-number {
    font-size: 11px;
    color: var(--primary-blue);
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.info-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.station-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 6px 12px;
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.tab-btn.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.tab-content {
    min-height: 100px;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.tab-pane p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.7;
}

.station-image-box {
    padding: 0;
    max-height: 280px;
    overflow: hidden;
}

/* Transfer Center */
.transfer-center {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    margin-bottom: 28px;
}

.center-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-blue);
}

.function-hub {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    position: relative;
    width: 100%;
    max-width: 400px;
}

.function-hub::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-light), transparent);
    z-index: 0;
}

.function-hub::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--border-light), transparent);
    z-index: 0;
}

.function-node {
    position: relative;
    z-index: 1;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 11px;
    text-align: center;
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.3;
}

.function-node:hover {
    border-color: var(--primary-blue);
    box-shadow: 0 0 10px rgba(0, 102, 204, 0.15);
}

.function-node.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
    box-shadow: 0 0 15px rgba(0, 102, 204, 0.25);
}

.node-text {
    display: block;
}

.function-content {
    width: 100%;
    background: white;
    border: 1px solid var(--border-lighter);
    border-radius: 8px;
    padding: 20px;
    min-height: 140px;
}

.function-item {
    display: none;
}

.function-item.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.function-item h3 {
    font-size: 15px;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 600;
}

.function-item p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* Security Station */
.security-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 28px;
    align-items: flex-start;
}

.security-gates {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.gate-btn {
    padding: 9px 12px;
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    text-align: left;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    line-height: 1.3;
}

.gate-btn:hover {
    border-color: var(--primary-blue);
    background: var(--light-blue);
}

.gate-btn.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.gate-icon {
    font-size: 14px;
    flex-shrink: 0;
}

.security-explanation {
    background: white;
    border: 1px solid var(--border-lighter);
    border-radius: 8px;
    padding: 18px;
    min-height: 240px;
}

.explanation-item {
    display: none;
}

.explanation-item.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.explanation-item h3 {
    font-size: 14px;
    margin-bottom: 10px;
    color: var(--text-dark);
    font-weight: 600;
}

.explanation-item p {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 8px;
    line-height: 1.6;
}

.explanation-item strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* Network Tracks */
.tracks-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 28px;
}

.track-item {
    background: white;
    border: 1px solid var(--border-lighter);
    border-radius: 8px;
    padding: 16px;
    transition: all 0.3s ease;
}

.track-item:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.track-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    gap: 12px;
}

.track-item h3 {
    font-size: 14px;
    color: var(--text-dark);
    font-weight: 600;
    margin: 0;
}

.track-status {
    font-size: 11px;
    background: rgba(255, 149, 0, 0.1);
    color: var(--warning-orange);
    padding: 3px 8px;
    border-radius: 3px;
    font-weight: 500;
    white-space: nowrap;
}

.track-description {
    font-size: 13px;
    color: var(--text-light);
    margin: 0;
    line-height: 1.6;
}

/* Carousel */
.preview-carousel {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 28px;
    min-height: 500px;
}

.carousel-main {
    flex: 1;
    max-width: 300px;
    height: 540px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-frame {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    width: 100%;
}

.preview-frame img {
    width: 100%;
    height: 100%;
}

.preview-frame.small {
    width: 100px;
    height: 200px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.carousel-side {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: white;
    border: 1px solid var(--border-light);
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.carousel-btn:hover {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.carousel-btn.prev {
    left: 0;
}

.carousel-btn.next {
    right: 0;
}

@media (max-width: 1024px) {
    .carousel-side {
        display: none;
    }
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 6px;
    flex-wrap: wrap;
}

.dot {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    background: white;
    border: 1px solid var(--border-light);
    cursor: pointer;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.dot:hover {
    border-color: var(--primary-blue);
}

.dot.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

/* Scene Routes */
.scene-grid {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 28px;
}

.scene-selector {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.scene-route {
    padding: 9px 12px;
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    text-align: left;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 12px;
    color: var(--text-dark);
    line-height: 1.4;
}

.scene-route:hover {
    border-color: var(--primary-blue);
    background: var(--light-blue);
}

.scene-route.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.scene-content {
    background: white;
    border: 1px solid var(--border-lighter);
    border-radius: 8px;
    padding: 18px;
    min-height: 160px;
}

.scene-item {
    display: none;
}

.scene-item.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.scene-item h3 {
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 600;
}

.scene-item p {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 6px;
    line-height: 1.6;
}

.scene-item strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* Checkpoint Board */
.checkpoint-board {
    background: white;
    border: 1px solid var(--border-lighter);
    border-radius: 8px;
    padding: 28px;
}

.checkpoint-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.checkpoint-item {
    padding: 12px;
    background: white;
    border: 2px solid var(--border-light);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 12px;
    color: var(--text-dark);
}

.checkpoint-item:hover {
    border-color: var(--primary-blue);
    background: var(--light-blue);
}

.checkpoint-item.checked {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: white;
}

.checkpoint-item.checked .check-icon {
    content: '✓';
}

.check-icon {
    font-size: 16px;
    font-weight: 600;
}

.checkpoint-item.checked .check-icon::before {
    content: '✓';
}

.check-label {
    display: block;
    text-align: center;
    line-height: 1.3;
}

.checkpoint-message {
    text-align: center;
    font-size: 13px;
    color: var(--text-light);
    padding: 12px;
    background: var(--light-blue);
    border-radius: 4px;
    animation: fadeIn 0.3s ease;
}

/* FAQ Grid */
.faq-grid {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 28px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.faq-question {
    padding: 9px 12px;
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    text-align: left;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    min-height: 44px;
    line-height: 1.3;
}

.faq-question:hover {
    border-color: var(--primary-blue);
    background: var(--light-blue);
}

.faq-question.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.faq-num {
    font-weight: 600;
    flex-shrink: 0;
    font-size: 11px;
}

.faq-text {
    flex: 1;
}

.faq-answers {
    background: white;
    border: 1px solid var(--border-lighter);
    border-radius: 8px;
    padding: 18px;
    min-height: 320px;
}

.faq-answer {
    display: none;
}

.faq-answer.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.faq-answer h3 {
    font-size: 14px;
    margin-bottom: 10px;
    color: var(--text-dark);
    font-weight: 600;
}

.faq-answer p {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 8px;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #f5f5f5;
    border-top: 1px solid var(--border-lighter);
    padding: 32px 0 16px;
    margin-top: 40px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--border-lighter);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-blue);
}

.footer-logo-img {
    width: 28px;
    height: 28px;
}

.footer-nav {
    display: flex;
    gap: 24px;
}

.footer-nav a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s ease;
}

.footer-nav a:hover {
    color: var(--primary-blue);
}

.footer-content {
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 12px;
}

.footer-notice {
    background: rgba(255, 149, 0, 0.1);
    padding: 10px 12px;
    border-left: 3px solid var(--warning-orange);
    border-radius: 4px;
    margin-bottom: 12px;
}

.footer-notice p {
    font-size: 12px;
    color: var(--text-dark);
    line-height: 1.5;
    margin: 0;
}

.footer-bottom {
    font-size: 11px;
    color: var(--text-light);
    line-height: 1.6;
}

.footer-bottom p {
    margin-bottom: 6px;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-blue);
    color: white;
    border: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    z-index: 89;
    transition: all 0.3s ease;
}

.back-to-top:hover {
    background: var(--dark-blue);
    transform: translateY(-4px);
}

.back-to-top.show {
    display: flex;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 200;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    margin: auto;
    max-width: 90%;
    max-height: 90%;
    display: block;
    padding: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    object-fit: contain;
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    color: white;
    cursor: pointer;
    z-index: 201;
}

.modal-close:hover {
    color: #bbb;
}

/* Responsive Design */
@media (max-width: 768px) {
    .route-nav-pc {
        display: none;
    }

    body {
        padding-bottom: 60px;
    }

    .section {
        padding: 28px 0;
    }

    .section h2 {
        font-size: 20px;
        margin-bottom: 18px;
    }

    .hero {
        padding: 36px 0;
    }

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

    .hero h1 {
        font-size: 22px;
    }

    .hero-desc {
        font-size: 13px;
        margin-bottom: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 8px;
    }

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

    .station-info {
        order: 2;
    }

    .station-image-box {
        order: 1;
    }

    .transfer-center {
        gap: 16px;
        margin-bottom: 20px;
    }

    .function-hub {
        max-width: 100%;
    }

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

    .security-gates {
        flex-direction: row;
        overflow-x: auto;
        gap: 4px;
    }

    .gate-btn {
        flex-shrink: 0;
        min-width: 55px;
        padding: 8px 10px;
    }

    .preview-carousel {
        flex-direction: column;
        min-height: auto;
        gap: 12px;
    }

    .carousel-main {
        max-width: 100%;
    }

    .preview-frame {
        max-width: 240px;
        height: auto;
        aspect-ratio: 360 / 640;
    }

    .carousel-side {
        flex-direction: row;
        justify-content: center;
    }

    .preview-frame.small {
        width: 80px;
        height: 160px;
    }

    .carousel-btn {
        display: none;
    }

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

    .scene-selector {
        flex-direction: row;
        overflow-x: auto;
        gap: 4px;
    }

    .scene-route {
        flex-shrink: 0;
        min-width: 80px;
        padding: 8px 10px;
    }

    .checkpoint-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .faq-list {
        max-height: 350px;
        overflow-y: auto;
    }

    .route-preview-scroll {
        justify-content: flex-start;
        gap: 4px;
    }

    .preview-item {
        flex-shrink: 0;
    }

    .footer-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        margin-bottom: 20px;
        padding-bottom: 20px;
    }

    .footer-nav {
        flex-wrap: wrap;
        gap: 12px;
    }

    .back-to-top {
        width: 36px;
        height: 36px;
        bottom: 80px;
        right: 12px;
    }
}

@media (max-width: 480px) {
    .container {
        width: 100%;
        padding: 0 12px;
    }

    .hero h1 {
        font-size: 19px;
    }

    .section h2 {
        font-size: 18px;
        margin-bottom: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 8px;
    }

    .btn {
        width: 100%;
        text-align: center;
        padding: 10px 16px;
        font-size: 13px;
    }

    .station-tabs {
        flex-direction: row;
        overflow-x: auto;
        gap: 4px;
    }

    .tab-btn {
        flex-shrink: 0;
        min-width: 70px;
    }

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

    .station-nodes {
        grid-template-columns: 1fr 1fr;
    }

    .checkpoint-item {
        padding: 10px;
        font-size: 11px;
    }

    .carousel-dots {
        gap: 4px;
    }

    .dot {
        width: 24px;
        height: 24px;
        font-size: 10px;
    }

    .faq-num {
        display: none;
    }

    .faq-question {
        padding: 8px 10px;
    }
}