:root {
    --ink-blue: #1e3a5f;
    --retro-red: #8B0000;
    --caramel-brown: #8B4513;
    --cream-white: #F5F5DC;
    --dark-gold: #B8860B;
    --light-gold: #DAA520;
    --dark-brown: #3D2914;
    --warm-gray: #8B8B8B;
    --paper-bg: #FAF8F5;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--dark-brown);
    background-color: var(--paper-bg);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Noto Serif SC', serif;
    color: var(--ink-blue);
}

.fixed-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, var(--ink-blue) 0%, #152a45 100%);
    border-bottom: 2px solid var(--dark-gold);
    box-shadow: 0 4px 20px rgba(30, 58, 95, 0.4);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--cream-white);
    letter-spacing: 0.1em;
}

.logo-sub {
    font-size: 0.6rem;
    color: var(--light-gold);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.8;
}

.nav-buttons {
    display: flex;
    gap: 1.5rem;
}

.nav-btn {
    padding: 0.6rem 1.5rem;
    text-decoration: none;
    color: var(--cream-white);
    font-weight: 500;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
    letter-spacing: 0.05em;
}

.nav-btn:hover {
    background: rgba(218, 165, 32, 0.2);
    border-color: var(--dark-gold);
    color: var(--light-gold);
}

.nav-btn.active {
    background: linear-gradient(135deg, rgba(218, 165, 32, 0.3) 0%, rgba(184, 134, 11, 0.2) 100%);
    border-color: var(--dark-gold);
    color: var(--light-gold);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.nav-btn-back {
    font-size: 0.9rem;
    padding: 0.6rem 1.2rem;
    border: 1px solid rgba(184, 134, 11, 0.5);
}

.main-content {
    padding-top: 90px;
    min-height: calc(100vh - 90px);
    min-height: calc(100dvh - 90px);
}

.hero-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 4rem 3rem;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-left, .hero-right {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.poster-container {
    cursor: pointer;
    transition: transform 0.3s ease;
}

.poster-container:hover {
    transform: scale(1.02);
}

.poster-frame {
    border: 8px solid var(--caramel-brown);
    border-radius: 12px;
    box-shadow: 
        0 8px 32px rgba(139, 69, 19, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.1);
    position: relative;
    background: linear-gradient(135deg, #2c1810 0%, #1a0f0a 100%);
    padding: 12px;
}

.poster-content {
    position: relative;
    border: 3px solid var(--dark-gold);
    border-radius: 6px;
    overflow: hidden;
}

.russian-ornament {
    position: absolute;
    width: 40px;
    height: 40px;
    opacity: 0.6;
    z-index: 10;
}

.russian-ornament.top-left {
    top: 10px;
    left: 10px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cpath d='M0 0 L20 10 L20 0 L40 0' fill='none' stroke='%23B8860B' stroke-width='1.5'/%3E%3Cpath d='M0 0 L10 20 L0 20 L0 40' fill='none' stroke='%23B8860B' stroke-width='1.5'/%3E%3Ccircle cx='10' cy='10' r='3' fill='%238B0000'/%3E%3C/svg%3E") no-repeat;
}

.russian-ornament.top-right {
    top: 10px;
    right: 10px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cpath d='M40 0 L20 10 L20 0 L0 0' fill='none' stroke='%23B8860B' stroke-width='1.5'/%3E%3Cpath d='M40 0 L30 20 L40 20 L40 40' fill='none' stroke='%23B8860B' stroke-width='1.5'/%3E%3Ccircle cx='30' cy='10' r='3' fill='%238B0000'/%3E%3C/svg%3E") no-repeat;
}

.russian-ornament.bottom-left {
    bottom: 10px;
    left: 10px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cpath d='M0 40 L20 30 L20 40 L40 40' fill='none' stroke='%23B8860B' stroke-width='1.5'/%3E%3Cpath d='M0 40 L10 20 L0 20 L0 0' fill='none' stroke='%23B8860B' stroke-width='1.5'/%3E%3Ccircle cx='10' cy='30' r='3' fill='%238B0000'/%3E%3C/svg%3E") no-repeat;
}

.russian-ornament.bottom-right {
    bottom: 10px;
    right: 10px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cpath d='M40 40 L20 30 L20 40 L0 40' fill='none' stroke='%23B8860B' stroke-width='1.5'/%3E%3Cpath d='M40 40 L30 20 L40 20 L40 0' fill='none' stroke='%23B8860B' stroke-width='1.5'/%3E%3Ccircle cx='30' cy='30' r='3' fill='%238B0000'/%3E%3C/svg%3E") no-repeat;
}

.poster-image img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    display: block;
}

.poster-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    padding: 1.5rem;
    text-align: center;
}

.poster-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(184, 134, 11, 0.8);
    color: var(--cream-white);
    border-radius: 20px;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
}

.poster-title {
    margin-top: 1.5rem;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.4rem;
    color: var(--ink-blue);
    letter-spacing: 0.2em;
    text-align: center;
}

.video-container {
    cursor: pointer;
    transition: transform 0.3s ease;
}

.video-container:hover {
    transform: scale(1.02);
}

.video-frame {
    border: 8px solid var(--caramel-brown);
    border-radius: 12px;
    box-shadow: 
        0 8px 32px rgba(139, 69, 19, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.1);
    position: relative;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 12px;
}

.video-content {
    position: relative;
    border: 3px solid var(--dark-gold);
    border-radius: 6px;
    overflow: hidden;
    height: 450px;
}

.video-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(30, 58, 95, 0.9) 0%, rgba(26, 33, 62, 0.95) 100%);
}

.video-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--retro-red) 0%, #6b0000 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cream-white);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 20px rgba(139, 0, 0, 0.4);
    transition: transform 0.3s ease;
}

.video-placeholder:hover .video-icon {
    transform: scale(1.1);
}

.video-info {
    text-align: center;
}

.video-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    color: var(--cream-white);
    margin-bottom: 0.5rem;
}

.video-duration {
    font-size: 0.9rem;
    color: var(--light-gold);
}

.video-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
    padding: 1rem;
}

.video-badge {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    background: rgba(139, 0, 0, 0.8);
    color: var(--cream-white);
    border-radius: 15px;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.shanghai-silhouette {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100%25' height='80' viewBox='0 0 800 80'%3E%3Cpath d='M0 80 L0 60 L20 60 L25 30 L35 30 L40 50 L50 50 L55 20 L65 20 L70 40 L80 40 L85 25 L95 25 L100 45 L110 45 L115 35 L125 35 L130 55 L140 55 L145 45 L155 45 L160 60 L170 60 L175 40 L185 40 L190 55 L200 55 L205 35 L215 35 L220 50 L230 50 L235 60 L800 60 L800 80 Z' fill='%231e3a5f' opacity='0.4'/%3E%3C/svg%3E") no-repeat bottom center;
    background-size: cover;
}

.video-desc {
    margin-top: 1.5rem;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
    color: var(--caramel-brown);
    text-align: center;
    letter-spacing: 0.1em;
}

.gallery-section {
    padding: 3rem 3rem;
    background: linear-gradient(180deg, var(--paper-bg) 0%, #F0EDE5 100%);
}

.section-title {
    text-align: center;
    font-size: 1.8rem;
    color: var(--ink-blue);
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.title-line {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--dark-gold), transparent);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.gallery-card {
    background: var(--cream-white);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(184, 134, 11, 0.3);
    box-shadow: 
        0 4px 16px rgba(139, 69, 19, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
}

.gallery-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(139, 69, 19, 0.2);
}

.card-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-card:hover .card-image img {
    transform: scale(1.05);
}

.card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(30, 58, 95, 0.8));
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-card:hover .card-overlay {
    opacity: 1;
}

.overlay-text {
    color: var(--cream-white);
    font-size: 0.9rem;
    letter-spacing: 0.1em;
}

.card-info {
    padding: 1.2rem;
}

.card-info h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.2rem;
    color: var(--ink-blue);
    margin-bottom: 0.5rem;
}

.card-info p {
    font-size: 0.9rem;
    color: var(--warm-gray);
}

.feature-section {
    padding: 3rem 3rem;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--cream-white);
    border: 1px solid rgba(184, 134, 11, 0.2);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: 
        0 2px 12px rgba(139, 69, 19, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-3px);
    border-color: var(--dark-gold);
    box-shadow: 0 4px 16px rgba(184, 134, 11, 0.15);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h4 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
    color: var(--ink-blue);
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--warm-gray);
    line-height: 1.5;
}

.footer-section {
    background: linear-gradient(135deg, var(--ink-blue) 0%, #152a45 100%);
    margin-top: 4rem;
    border-top: 2px solid var(--dark-gold);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left {
    display: flex;
    flex-direction: column;
}

.footer-logo {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.4rem;
    color: var(--cream-white);
    margin-bottom: 0.5rem;
}

.footer-desc {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.05em;
}

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

.footer-contact, .footer-email {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.3rem;
}

.footer-bottom {
    background: rgba(0, 0, 0, 0.2);
    padding: 1.2rem;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal-content {
    position: relative;
    background: var(--cream-white);
    border: 4px solid var(--caramel-brown);
    border-radius: 12px;
    max-width: 900px;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--retro-red);
    color: var(--cream-white);
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: #6b0000;
    transform: rotate(90deg);
}

.modal-body {
    padding: 1rem;
}

.modal-image {
    width: 100%;
    height: auto;
    max-height: 70vh;
    object-fit: contain;
}

.modal-caption {
    text-align: center;
    padding: 1rem;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.2rem;
    color: var(--ink-blue);
    letter-spacing: 0.1em;
}

.modal-video {
    width: 100%;
    height: 450px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--ink-blue) 0%, #152a45 100%);
    border-radius: 8px;
}

.video-play-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--retro-red);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cream-white);
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.video-text {
    color: var(--cream-white);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.video-hint {
    color: var(--light-gold);
    font-size: 0.95rem;
    font-family: 'Noto Serif SC', serif;
}

.map-main {
    padding-top: 90px;
    min-height: calc(100vh - 90px);
    min-height: calc(100dvh - 90px);
    background: linear-gradient(135deg, #F5F5DC 0%, #FAF8F5 100%);
}

.map-page-header,
.video-page-header {
    text-align: center;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, var(--cream-white) 0%, #FAF8F5 100%);
    border-bottom: 1px solid rgba(184, 134, 11, 0.2);
}

.page-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2rem;
    color: var(--ink-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.title-decoration {
    color: var(--dark-gold);
    font-size: 1.5rem;
}

.page-subtitle {
    font-size: 1rem;
    color: var(--warm-gray);
    letter-spacing: 0.1em;
}

.map-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    padding: 2rem 3rem;
    max-width: 1500px;
    margin: 0 auto;
}

.map-left {
    display: flex;
    flex-direction: column;
}

.map-wrapper {
    flex: 1;
}

.map-frame {
    background: linear-gradient(135deg, #8B7355 0%, #6B5344 100%);
    border-radius: 16px;
    padding: 8px;
    box-shadow: 
        0 8px 32px rgba(139, 69, 19, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.1);
    border: 2px solid var(--caramel-brown);
}

.map-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1rem;
    background: linear-gradient(135deg, var(--ink-blue) 0%, #152a45 100%);
    border-radius: 8px 8px 0 0;
}

.map-title {
    font-family: 'Noto Serif SC', serif;
    color: var(--cream-white);
    font-size: 1rem;
    letter-spacing: 0.1em;
}

.map-controls {
    display: flex;
    gap: 0.5rem;
}

.control-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: var(--cream-white);
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.control-btn:hover {
    background: rgba(218, 165, 32, 0.3);
}

.amap-container {
    height: 500px;
    background: linear-gradient(135deg, #E8E4D9 0%, #D4C4B0 100%);
    position: relative;
    border-radius: 0 0 8px 8px;
    overflow: hidden;
}

.amap-container .amap-ui-control,
.amap-container .amap-toolbar,
.amap-container .amap-geolocation-con,
.amap-container .amap-scale,
.amap-container .amap-controlbar,
.amap-container .amap-copyright,
.amap-container .amap-logo {
    z-index: 1 !important;
}

.map-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--ink-blue);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(30, 58, 95, 0.2);
    border-top-color: var(--ink-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.map-marker {
    position: absolute;
    cursor: pointer;
    z-index: 10;
}

.map-marker .marker-pin {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 3px solid var(--cream-white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.moscow-marker {
    top: 30%;
    left: 65%;
}

.moscow-marker .marker-pin {
    background: var(--retro-red);
}

.shanghai-marker {
    top: 45%;
    left: 15%;
}

.shanghai-marker .marker-pin {
    background: var(--ink-blue);
}

.marker-label {
    position: absolute;
    top: 25px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(30, 58, 95, 0.9);
    color: var(--cream-white);
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
    font-size: 0.8rem;
    white-space: nowrap;
    border: 1px solid var(--dark-gold);
}

.route-line {
    position: absolute;
    top: 40%;
    left: 10%;
    width: 80%;
    height: 30%;
}

.map-right {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.points-panel {
    background: var(--cream-white);
    border: 1px solid rgba(184, 134, 11, 0.3);
    border-radius: 12px;
    box-shadow: 
        0 4px 16px rgba(139, 69, 19, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.2rem;
    background: linear-gradient(135deg, var(--ink-blue) 0%, #152a45 100%);
    border-radius: 12px 12px 0 0;
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--cream-white);
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
}

.panel-icon {
    font-size: 1.2rem;
}

.collapse-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--cream-white);
    font-size: 0.8rem;
    padding: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.collapse-btn:hover {
    background: rgba(218, 165, 32, 0.3);
}

.panel-content {
    padding: 1rem;
    max-height: 600px;
    overflow-y: auto;
    transition: max-height 0.3s ease;
}

.panel-content.collapsed {
    max-height: 0;
    padding: 0;
    overflow: hidden;
}

.route-section {
    margin-bottom: 1.5rem;
    border-bottom: 1px dashed rgba(184, 134, 11, 0.3);
    padding-bottom: 1.5rem;
}

.route-section:last-child {
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 0;
}

.route-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.route-icon {
    font-size: 1.1rem;
}

.route-name {
    font-family: 'Noto Serif SC', serif;
    font-size: 1rem;
    color: var(--ink-blue);
    font-weight: 600;
}

.point-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.point-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem;
    background: rgba(30, 58, 95, 0.03);
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.point-item:hover {
    background: rgba(30, 58, 95, 0.08);
    border-color: rgba(184, 134, 11, 0.3);
}

.point-item.active {
    background: rgba(30, 58, 95, 0.12);
    border-color: var(--dark-gold);
}

.point-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--ink-blue);
    color: var(--cream-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
}

.point-item.active .point-number {
    background: var(--retro-red);
}

.point-info h4 {
    font-family: 'Noto Serif SC', serif;
    font-size: 0.95rem;
    color: var(--ink-blue);
    margin-bottom: 0.2rem;
}

.point-info p {
    font-size: 0.8rem;
    color: var(--warm-gray);
}

.point-arrow {
    margin-left: auto;
    color: var(--dark-gold);
    font-size: 1rem;
}

.info-card {
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.05) 0%, rgba(139, 69, 19, 0.05) 100%);
    border: 1px solid rgba(139, 0, 0, 0.2);
    border-radius: 12px;
    overflow: hidden;
}

.card-header {
    padding: 1rem;
    background: linear-gradient(135deg, var(--retro-red) 0%, #6b0000 100%);
}

.card-header h4 {
    color: var(--cream-white);
    font-family: 'Noto Serif SC', serif;
    font-size: 1rem;
    letter-spacing: 0.05em;
}

.card-body {
    padding: 1.2rem;
}

.tip-item {
    font-size: 0.9rem;
    color: var(--dark-brown);
    padding: 0.4rem 0;
    border-bottom: 1px dashed rgba(139, 69, 19, 0.2);
}

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

.route-distance {
    font-size: 0.85rem;
    color: var(--warm-gray);
    margin-left: auto;
}

.detail-panel {
    background: var(--cream-white);
    border: 1px solid rgba(184, 134, 11, 0.3);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(139, 69, 19, 0.1);
    overflow: hidden;
}

.detail-panel[hidden] {
    display: none !important;
}

.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.2rem;
    background: linear-gradient(135deg, var(--ink-blue) 0%, #152a45 100%);
}

.detail-title {
    color: var(--cream-white);
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
    margin: 0;
}

.detail-geo {
    margin-left: auto;
    color: var(--light-gold);
    font-family: 'Noto Serif SC', serif;
    font-size: 0.9rem;
    padding: 0.2rem 0.7rem;
    border: 1px solid rgba(218, 165, 32, 0.4);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    white-space: nowrap;
    cursor: pointer;
}

.detail-geo:hover {
    background: rgba(218, 165, 32, 0.2);
    color: var(--cream-white);
    border-color: var(--dark-gold);
}

.detail-close {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--cream-white);
    font-size: 1.2rem;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.detail-close:hover {
    background: rgba(218, 165, 32, 0.3);
}

.detail-body {
    padding: 1rem;
}

.detail-placeholder {
    text-align: center;
    padding: 2rem;
    color: var(--warm-gray);
}

.placeholder-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.detail-image {
    margin-bottom: 1rem;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(184, 134, 11, 0.2);
}

.detail-image img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.detail-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-item {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 0.5rem;
    row-gap: 0.3rem;
    align-items: baseline;
    padding-bottom: 1rem;
    border-bottom: 1px dashed rgba(184, 134, 11, 0.2);
}

.info-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.info-icon {
    font-size: 1rem;
    grid-column: 1;
}

.info-label {
    font-family: 'Noto Serif SC', serif;
    font-size: 0.9rem;
    color: var(--ink-blue);
    font-weight: 600;
    grid-column: 2;
}

.info-content {
    grid-column: 1 / -1;
    font-size: 0.85rem;
    color: var(--dark-brown);
    line-height: 1.6;
    margin: 0;
}

/* ===== 首页 ===== */

.home-body {
    margin: 0;
    padding: 0;
    background: #0d0d0d;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.home-wrapper {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

.home-poster-area {
    flex: 1;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0d0d0d;
}

.home-poster-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
}

.home-entry-area {
    display: flex;
    flex-shrink: 0;
    height: 100px;
    border-top: 2px solid var(--dark-gold);
}

.home-entry-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.2rem;
    text-decoration: none;
    transition: filter 0.2s ease;
}

.home-entry-video {
    background: linear-gradient(135deg, var(--retro-red) 0%, #6b0000 100%);
    border-right: 1px solid rgba(184, 134, 11, 0.4);
}

.home-entry-video:hover { filter: brightness(1.15); }

.home-entry-map {
    background: linear-gradient(135deg, var(--ink-blue) 0%, #152a45 100%);
}

.home-entry-map:hover { filter: brightness(1.15); }

.home-entry-icon {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1;
}

.home-entry-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.home-entry-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--cream-white);
    letter-spacing: 0.1em;
}

.home-entry-sub {
    font-size: 0.72rem;
    color: var(--light-gold);
    letter-spacing: 0.2em;
    opacity: 0.9;
}

.home-poster-fallback {
    display: none;
    position: absolute;
    inset: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    background: linear-gradient(135deg, #0d0d0d 0%, #1a1a2e 50%, #0d0d0d 100%);
}

.home-poster-fallback.visible {
    display: flex;
}

.fallback-ornament {
    color: var(--dark-gold);
    font-size: 2rem;
    opacity: 0.6;
}

.fallback-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.2rem;
    color: var(--cream-white);
    letter-spacing: 0.15em;
    text-align: center;
    text-shadow: 0 2px 20px rgba(184, 134, 11, 0.4);
}

.fallback-sub {
    font-size: 0.95rem;
    color: var(--light-gold);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    opacity: 0.8;
}


/* ===== 视频页 ===== */

.video-body {
    background: var(--paper-bg);
}

.video-main {
    padding-top: 90px;
    min-height: calc(100vh - 90px);
    min-height: calc(100dvh - 90px);
}

.video-player-section {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 2rem 3rem;
}

.lang-toggle-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    justify-content: center;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.7rem 2rem;
    border: 2px solid rgba(184, 134, 11, 0.4);
    border-radius: 8px;
    background: var(--cream-white);
    color: var(--ink-blue);
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.05em;
}

.lang-btn:hover {
    border-color: var(--dark-gold);
    background: rgba(218, 165, 32, 0.1);
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--ink-blue) 0%, #152a45 100%);
    color: var(--cream-white);
    border-color: var(--dark-gold);
    box-shadow: 0 4px 16px rgba(30, 58, 95, 0.3);
}

.lang-flag {
    font-size: 1.2rem;
}

.video-player-wrap {
    background: #000;
    border: 3px solid var(--caramel-brown);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(139, 69, 19, 0.3);
}

.video-player-wrap video {
    width: 100%;
    display: block;
    max-height: 60vh;
}

.video-lang-label {
    text-align: center;
    margin-top: 1rem;
    font-family: 'Noto Serif SC', serif;
    font-size: 0.95rem;
    color: var(--warm-gray);
    letter-spacing: 0.1em;
}

@media (max-width: 1200px) {
    .hero-section {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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

    .map-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 0.8rem;
        padding: 0.8rem;
    }

    .nav-buttons {
        flex-wrap: wrap;
        justify-content: center;
    }

    /* 导航栏在窄屏变成两行，给主体加上更大的顶部内边距避免被遮挡 */
    .map-main,
    .video-main,
    .home-main {
        padding-top: 110px;
    }

    .hero-section {
        padding: 2rem 1rem;
    }

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

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

    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

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

    .map-container {
        padding: 1rem;
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .map-page-header,
    .video-page-header {
        padding: 1.5rem 1rem;
    }

    .page-title {
        font-size: 1.5rem;
    }

    .amap-container {
        height: 350px;
    }

    .map-right {
        gap: 1rem;
    }

    .panel-content {
        max-height: none;
        padding: 0.8rem;
    }

    /* 详情面板嵌在被点击的列表项之下，不再悬浮 */
    .point-list .detail-panel {
        margin: -0.2rem 0 0.4rem 0;
        border-radius: 8px;
        border: 1px solid var(--dark-gold);
        animation: detailSlideDown 0.25s ease;
    }

    .point-list .detail-header {
        padding: 0.7rem 1rem;
        border-radius: 8px 8px 0 0;
    }

    .point-list .detail-title {
        font-size: 1rem;
    }

    .point-list .detail-body {
        padding: 0.8rem;
    }

    .point-list .detail-image img {
        height: 180px;
    }

    @keyframes detailSlideDown {
        from { opacity: 0; transform: translateY(-8px); }
        to   { opacity: 1; transform: translateY(0); }
    }

    .poster-image img,
    .video-content {
        height: 300px;
    }
}


/* ============================================================
   移动端优化（站点为移动端设计，覆盖桌面默认样式）
   ============================================================ */
@media (max-width: 900px) {
    html, body {
        overflow-x: hidden;
    }

    body {
        -webkit-text-size-adjust: 100%;
        text-size-adjust: 100%;
    }

    /* ---------- 顶部固定导航：单行紧凑布局 ---------- */
    .fixed-header {
        border-bottom-width: 1px;
    }

    .nav-container {
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
        padding: 0.45rem 0.75rem;
        max-width: 100%;
    }

    .logo-section {
        min-width: 0;
        flex-shrink: 1;
    }

    .logo-text {
        font-size: 0.9rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .logo-sub {
        display: none;
    }

    .nav-buttons {
        flex-wrap: nowrap;
        gap: 0.35rem;
        margin-left: auto;
        flex-shrink: 0;
        justify-content: flex-end;
    }

    .nav-btn {
        padding: 0.4rem 0.65rem;
        font-size: 0.72rem;
        border-radius: 6px;
        letter-spacing: 0;
        white-space: nowrap;
    }

    /* ---------- 主体内边距匹配新头部高度 ---------- */
    .map-main,
    .video-main,
    .home-main,
    .main-content {
        padding-top: 52px;
        min-height: calc(100vh - 52px);
        min-height: calc(100dvh - 52px);
    }

    /* ---------- 页面标题区 ---------- */
    .map-page-header,
    .video-page-header {
        padding: 1rem 0.8rem 0.8rem;
    }

    .page-title {
        font-size: 1.25rem;
        gap: 0.5rem;
        margin-bottom: 0.25rem;
    }

    .title-decoration {
        font-size: 1rem;
    }

    .page-subtitle {
        font-size: 0.8rem;
        letter-spacing: 0.05em;
    }

    /* ---------- 首页 ---------- */
    .home-body {
        height: 100vh;
        height: 100dvh;
    }

    .home-wrapper {
        height: 100vh;
        height: 100dvh;
    }

    .home-entry-area {
        height: 88px;
    }

    .home-entry-btn {
        gap: 0.6rem;
        padding: 0 0.5rem;
    }

    .home-entry-icon {
        font-size: 1.5rem;
    }

    .home-entry-title {
        font-size: 1rem;
        letter-spacing: 0.05em;
    }

    .home-entry-sub {
        font-size: 0.6rem;
        letter-spacing: 0.1em;
    }

    .fallback-title {
        font-size: 1.4rem;
    }

    .fallback-sub {
        font-size: 0.75rem;
        letter-spacing: 0.2em;
    }

    /* ---------- 视频页 ---------- */
    .video-player-section {
        padding: 0.8rem 0.6rem 1.5rem;
    }

    .lang-toggle-bar {
        gap: 0.4rem;
        margin-bottom: 0.8rem;
        flex-wrap: wrap;
    }

    .lang-btn {
        flex: 1 1 auto;
        min-width: 0;
        padding: 0.5rem 0.6rem;
        font-size: 0.78rem;
        gap: 0.3rem;
        border-width: 1px;
        justify-content: center;
    }

    .lang-flag {
        font-size: 1rem;
    }

    .video-player-wrap {
        border-width: 2px;
        border-radius: 8px;
    }

    .video-player-wrap video {
        max-height: none;
        width: 100%;
        height: auto;
    }

    .video-lang-label {
        margin-top: 0.6rem;
        font-size: 0.85rem;
    }

    /* ---------- 地图页 ---------- */
    .map-container {
        display: block;
        padding: 0.6rem;
        gap: 0;
        max-width: 100%;
    }

    .map-left {
        margin-bottom: 0.8rem;
    }

    .map-frame {
        padding: 4px;
        border-radius: 10px;
        border-width: 1px;
    }

    .map-header-bar {
        padding: 0.5rem 0.6rem;
    }

    .map-title {
        font-size: 0.85rem;
        letter-spacing: 0.05em;
    }

    .map-controls {
        gap: 0.3rem;
    }

    .control-btn {
        width: 28px;
        height: 28px;
        font-size: 0.85rem;
    }

    .amap-container {
        height: 55vh;
        height: 55dvh;
        min-height: 320px;
        border-radius: 0 0 6px 6px;
    }

    .map-right {
        gap: 0.8rem;
    }

    /* ---------- 站点面板 ---------- */
    .points-panel {
        border-radius: 10px;
    }

    .panel-header {
        padding: 0.7rem 0.9rem;
        border-radius: 10px 10px 0 0;
    }

    .panel-title {
        font-size: 0.95rem;
        gap: 0.5rem;
    }

    .panel-icon {
        font-size: 1rem;
    }

    .panel-content {
        padding: 0.7rem;
        max-height: none;
    }

    .route-section {
        margin-bottom: 1rem;
        padding-bottom: 1rem;
    }

    .route-header {
        margin-bottom: 0.6rem;
        gap: 0.4rem;
    }

    .route-name {
        font-size: 0.9rem;
    }

    .point-list {
        gap: 0.5rem;
    }

    .point-item {
        padding: 0.6rem;
        gap: 0.6rem;
        border-radius: 8px;
    }

    .point-number {
        width: 26px;
        height: 26px;
        font-size: 0.8rem;
        flex-shrink: 0;
    }

    .point-info {
        min-width: 0;
        flex: 1;
    }

    .point-info h4 {
        font-size: 0.9rem;
    }

    .point-info p {
        font-size: 0.72rem;
    }

    .point-arrow {
        font-size: 0.9rem;
    }

    /* ---------- 详情面板（嵌入列表项之下） ---------- */
    .point-list .detail-panel {
        margin: -0.1rem 0 0.3rem 0;
        border-radius: 8px;
        border: 1px solid var(--dark-gold);
        animation: detailSlideDown 0.25s ease;
    }

    .detail-header {
        padding: 0.6rem 0.8rem;
        gap: 0.5rem;
        border-radius: 8px 8px 0 0;
    }

    .detail-title {
        font-size: 0.95rem;
        flex: 1;
        min-width: 0;
    }

    .detail-geo {
        font-size: 0.78rem;
        padding: 0.2rem 0.6rem;
        flex-shrink: 0;
    }

    .detail-body {
        padding: 0.7rem;
    }

    .detail-image img {
        height: 160px;
    }

    .detail-info {
        gap: 0.7rem;
    }

    .info-item {
        padding-bottom: 0.7rem;
        column-gap: 0.4rem;
    }

    .info-label {
        font-size: 0.85rem;
    }

    .info-content {
        font-size: 0.8rem;
        line-height: 1.55;
    }

    @keyframes detailSlideDown {
        from { opacity: 0; transform: translateY(-8px); }
        to   { opacity: 1; transform: translateY(0); }
    }

    /* ---------- 页脚 ---------- */
    .footer-section {
        margin-top: 1.5rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 0.6rem;
        padding: 1.2rem 1rem;
        text-align: center;
    }

    .footer-logo {
        font-size: 1.05rem;
    }

    .footer-desc {
        font-size: 0.8rem;
    }

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

    .footer-bottom {
        padding: 0.8rem;
    }

    .footer-bottom p {
        font-size: 0.75rem;
    }
}

/* 极窄屏幕进一步精简（如 iPhone SE 等 ≤ 380px） */
@media (max-width: 380px) {
    .logo-text {
        font-size: 0.85rem;
    }

    .nav-btn {
        padding: 0.35rem 0.5rem;
        font-size: 0.68rem;
    }

    .nav-buttons {
        gap: 0.25rem;
    }

    .home-entry-title {
        font-size: 0.9rem;
    }

    .home-entry-icon {
        font-size: 1.3rem;
    }

    .lang-btn {
        font-size: 0.72rem;
        padding: 0.45rem 0.4rem;
    }
}

.map-chooser-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 3000;
    align-items: flex-end;
    justify-content: center;
}

.map-chooser-overlay:not([hidden]) {
    display: flex;
}

.map-chooser-content {
    width: 100%;
    max-width: 420px;
    background: var(--cream-white);
    border-radius: 16px 16px 0 0;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.3);
    animation: chooserSlideUp 0.25s ease;
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.map-chooser-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.2rem;
    border-bottom: 1px solid rgba(184, 134, 11, 0.2);
}

.map-chooser-header h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
    color: var(--ink-blue);
    margin: 0;
}

.map-chooser-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(139, 0, 0, 0.1);
    color: var(--retro-red);
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.map-chooser-close:hover {
    background: var(--retro-red);
    color: var(--cream-white);
}

.map-chooser-body {
    padding: 0.8rem 1rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.map-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1rem;
    background: rgba(30, 58, 95, 0.03);
    border: 1px solid rgba(184, 134, 11, 0.2);
    border-radius: 10px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    cursor: pointer;
}

.map-option:hover {
    background: rgba(30, 58, 95, 0.08);
    border-color: var(--dark-gold);
}

.map-option:active {
    background: rgba(30, 58, 95, 0.12);
    transform: scale(0.98);
}

.map-option-text {
    flex: 1;
    min-width: 0;
}

.map-option-name {
    font-family: 'Noto Serif SC', serif;
    font-size: 1rem;
    color: var(--ink-blue);
    font-weight: 600;
}

.map-option-recommend {
    font-size: 0.72rem;
    color: var(--cream-white);
    background: var(--retro-red);
    padding: 0.15rem 0.5rem;
    border-radius: 8px;
    flex-shrink: 0;
    letter-spacing: 0.05em;
}

@keyframes chooserSlideUp {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}

@media (min-width: 769px) {
    .map-chooser-overlay {
        align-items: center;
    }

    .map-chooser-content {
        border-radius: 16px;
        animation: chooserFadeIn 0.2s ease;
    }

    @keyframes chooserFadeIn {
        from { opacity: 0; transform: scale(0.95); }
        to   { opacity: 1; transform: scale(1); }
    }
}

@media (max-width: 900px) {
    .map-chooser-content {
        max-width: 100%;
        border-radius: 16px 16px 0 0;
    }

    .map-option {
        padding: 0.75rem 0.8rem;
        gap: 0.7rem;
    }

    .map-option-name {
        font-size: 0.95rem;
    }
}