/* ===== CSS Variables (Material Design 3 Color Palette) ===== */
:root {
    /* Primary Colors */
    --primary: #1976D2;
    --primary-dark: #1565C0;
    --primary-light: #42A5F5;
    
    /* Secondary Colors */
    --secondary: #FF6F00;
    --secondary-dark: #E65100;
    --secondary-light: #FF9800;
    
    /* Surface Colors */
    --surface: #FFFFFF;
    --surface-variant: #F5F5F5;
    --background: #FAFAFA;
    
    /* Text Colors */
    --on-primary: #FFFFFF;
    --on-secondary: #FFFFFF;
    --on-surface: #212121;
    --on-surface-variant: #757575;
    
    /* Accent Colors */
    --success: #4CAF50;
    --error: #F44336;
    --warning: #FFC107;
    
    /* Shadows */
    --shadow-1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-2: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --shadow-3: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
    --shadow-4: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Cultural Palette */
    --china-red: #D32F2F;
    --china-gold: #F9A825;
    --china-ink: #1E2A38;
    --india-saffron: #FF6F00;
    --india-green: #2E7D32;
    --lotus-pink: #F06292;
    --midnight-indigo: #283593;
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background);
    color: var(--on-surface);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== Navigation Bar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--primary);
    color: var(--on-primary);
    box-shadow: var(--shadow-2);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    gap: var(--spacing-md);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 500;
    flex-shrink: 0;
}

.nav-brand .material-icons {
    font-size: 28px;
}

.brand-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    justify-content: center;
}

.brand-text {
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.2;
}

.brand-tagline {
    font-size: 0.75rem;
    font-weight: 400;
    opacity: 0.9;
    letter-spacing: 0.5px;
    line-height: 1;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--on-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
    align-items: center;
}

.nav-link {
    color: var(--on-primary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    font-weight: 500;
    display: flex;
    align-items: center;
    height: 40px;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* ===== Navigation Support Button ===== */
.nav-support-item {
    display: flex;
    align-items: center;
}

.nav-support-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--china-red), var(--lotus-pink));
    color: var(--on-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: 'Roboto', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(211, 47, 47, 0.3);
    animation: navHeartbeat 2s ease-in-out infinite;
    height: 40px;
    white-space: nowrap;
}

@keyframes navHeartbeat {
    0%, 100% {
        transform: scale(1);
    }
    10%, 30% {
        transform: scale(1.05);
    }
    20%, 40% {
        transform: scale(1);
    }
}

.nav-support-btn:hover {
    background: linear-gradient(135deg, var(--lotus-pink), var(--china-red));
    box-shadow: 0 4px 12px rgba(211, 47, 47, 0.4);
    transform: translateY(-1px) scale(1.02);
    animation: none;
}

.nav-support-btn .material-icons {
    font-size: 20px;
}

.support-text {
    font-weight: 600;
}

/* ===== Language Switch Button ===== */
.lang-switch-item {
    display: flex;
    align-items: center;
}

.lang-switch-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 8px 16px;
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--on-primary);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: 'Roboto', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    height: 40px;
    white-space: nowrap;
}

.lang-switch-btn:hover {
    background-color: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
}

.lang-switch-btn .material-icons {
    font-size: 20px;
}

.lang-text {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
}

/* ===== Hero Section ===== */
.hero {
    margin-top: 64px;
    background-image: linear-gradient(135deg, rgba(211, 47, 47, 0.85) 0%, rgba(255, 111, 0, 0.82) 38%, rgba(21, 101, 192, 0.82) 100%), url('https://v2.cri.cn/M00/8B/FD/rBABCWbRLqKAbxlLAAAAAAAAAAA67275.500x281.1');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    color: var(--on-primary);
    padding: var(--spacing-xxl) var(--spacing-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

/* Welcome Banner */
.welcome-banner {
    display: inline-block;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.85) 100%);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(255, 255, 255, 0.3);
    animation: welcomePulse 2s ease-in-out infinite, fadeInDown 0.6s ease-out;
    backdrop-filter: blur(10px);
}

.welcome-text {
    font-size: 1.3rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--china-red) 0%, var(--india-saffron) 50%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.5px;
    display: inline-block;
}

@keyframes welcomePulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(255, 255, 255, 0.3);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2), 0 0 0 2px rgba(255, 255, 255, 0.5);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.35) 0, rgba(255, 255, 255, 0) 55%),
                      radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.22) 0, rgba(255, 255, 255, 0) 50%),
                      repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.08) 0, rgba(255, 255, 255, 0.08) 2px, transparent 2px, transparent 12px);
    opacity: 0.55;
    pointer-events: none;
    z-index: 0;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(30, 42, 56, 0.35) 100%);
    pointer-events: none;
    z-index: 0;
}

.hero-motifs {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
}

.hero-motif {
    position: absolute;
    opacity: 0.32;
    filter: blur(0);
    animation: float 14s ease-in-out infinite;
}

.motif-lantern {
    width: 170px;
    height: 170px;
    top: -50px;
    left: 6%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.6), rgba(211, 47, 47, 0.75));
    border-radius: 45% 55% 50% 60%;
    box-shadow: 0 25px 60px rgba(211, 47, 47, 0.35);
}

.motif-lotus {
    width: 240px;
    height: 240px;
    bottom: -100px;
    right: -60px;
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.5), rgba(240, 98, 146, 0.65));
    border-radius: 50%;
    box-shadow: 0 30px 70px rgba(240, 98, 146, 0.3);
    animation-duration: 18s;
}

.motif-kite {
    width: 180px;
    height: 180px;
    top: 25%;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    background: linear-gradient(135deg, rgba(249, 168, 37, 0.85), rgba(25, 118, 210, 0.6));
    clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
    box-shadow: 0 20px 50px rgba(249, 168, 37, 0.28);
    animation-duration: 16s;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.85;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xxl);
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

.stat-card {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 200px;
}

.stat-icon {
    font-size: 48px;
    opacity: 0.9;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-1);
}

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

.btn-primary {
    background-color: var(--secondary);
    color: var(--on-secondary);
}

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

.btn-secondary {
    background-color: var(--surface);
    color: var(--primary);
}

.btn-secondary:hover {
    background-color: var(--surface-variant);
}

.btn-link {
    background-color: transparent;
    color: var(--primary);
    box-shadow: none;
}

.btn-link:hover {
    background-color: rgba(25, 118, 210, 0.08);
}

/* ===== Culture Bridge Section ===== */
@supports not (aspect-ratio: 4 / 3) {
    .culture-card-media {
        height: 240px;
    }
}

.culture-section {
    position: relative;
    background: linear-gradient(120deg, rgba(211, 47, 47, 0.95) 0%, rgba(255, 111, 0, 0.92) 45%, rgba(40, 53, 147, 0.9) 100%);
    color: var(--surface);
    overflow: hidden;
}

.culture-section .container {
    position: relative;
    z-index: 2;
}

.culture-section .section-title {
    color: var(--surface);
}

.culture-intro {
    max-width: 720px;
    margin: 0 auto var(--spacing-xl);
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.culture-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--surface);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(6px);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.culture-card-media {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
}

.culture-card-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(22, 30, 42, 0.55) 100%);
    opacity: 0.75;
    pointer-events: none;
}

.culture-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transform: scale(1.02);
    transition: transform var(--transition-slow), filter var(--transition-fast);
    filter: saturate(1.05);
}

.culture-card:hover .culture-card-media img {
    transform: scale(1.08);
    filter: saturate(1.18);
}

.culture-card-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.culture-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.culture-card:hover::after {
    opacity: 1;
}

.culture-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 32px rgba(0, 0, 0, 0.2);
}

.culture-card-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: -36px 0 var(--spacing-md);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
    transition: transform var(--transition-fast);
}

.culture-card:hover .culture-card-icon {
    transform: translateY(-4px);
}

.culture-card-icon .material-icons {
    color: var(--surface);
}

.culture-card-title {
    font-size: 1.35rem;
    margin-bottom: var(--spacing-sm);
    color: #FFFFFF;
}

.culture-card-text {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
}

.culture-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    justify-content: center;
}

.culture-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    font-size: 0.9rem;
    letter-spacing: 0.3px;
    color: rgba(255, 255, 255, 0.9);
    transition: transform var(--transition-fast), background var(--transition-fast);
}

.culture-chip:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.22);
}

.culture-journey {
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.18);
}

.culture-journey-title {
    font-size: 1.75rem;
    color: #FFFFFF;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.culture-journey-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

.culture-journey-step {
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    min-height: 220px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.culture-journey-step h4 {
    color: #FFFFFF;
    font-size: 1.2rem;
}

.culture-journey-step p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
}

.culture-journey-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #FFFFFF;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.culture-ornament {
    position: absolute;
    pointer-events: none;
    filter: blur(0);
    opacity: 0.4;
    mix-blend-mode: screen;
}

.culture-ornament-left {
    width: 320px;
    height: 320px;
    background: radial-gradient(circle at 30% 30%, rgba(240, 98, 146, 0.7), rgba(211, 47, 47, 0.1));
    top: -120px;
    left: -80px;
    animation: float 18s ease-in-out infinite;
}

.culture-ornament-right {
    width: 360px;
    height: 360px;
    background: radial-gradient(circle at 70% 70%, rgba(255, 213, 79, 0.6), rgba(25, 118, 210, 0.15));
    bottom: -140px;
    right: -100px;
    animation: float 22s ease-in-out infinite;
}

/* ===== City Gallery Section ===== */
.gallery-section {
    position: relative;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 243, 224, 0.95) 55%, rgba(255, 233, 204, 0.9) 100%);
    overflow: hidden;
}

.gallery-section .container {
    position: relative;
    z-index: 2;
}

.gallery-section .section-title {
    color: var(--china-ink);
}

.gallery-intro {
    max-width: 780px;
    margin: 0 auto var(--spacing-xl);
    text-align: center;
    font-size: 1.05rem;
    line-height: 1.8;
    color: rgba(30, 42, 56, 0.8);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    grid-auto-rows: 220px;
    gap: var(--spacing-lg);
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 18px 36px rgba(30, 42, 56, 0.16);
    background-color: #fff;
    isolation: isolate;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.gallery-item::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(14, 25, 34, 0) 0%, rgba(14, 25, 34, 0.6) 100%);
    opacity: 0.9;
    pointer-events: none;
}

.gallery-caption {
    position: absolute;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    color: #fff;
    font-size: 0.95rem;
    line-height: 1.6;
    text-shadow: 0 8px 18px rgba(0, 0, 0, 0.35);
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-item-wide {
    grid-column: span 2;
}

.gallery-item-tall {
    grid-row: span 2;
}

.gallery-knot {
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 213, 79, 0.55), rgba(255, 87, 34, 0.1));
    filter: blur(0);
    opacity: 0.55;
    pointer-events: none;
}

.gallery-knot-left {
    top: -140px;
    left: -120px;
}

.gallery-knot-right {
    bottom: -160px;
    right: -100px;
    background: radial-gradient(circle at 70% 70%, rgba(244, 143, 177, 0.55), rgba(156, 39, 176, 0.15));
}

/* ===== Sections ===== */
.section {
    padding: var(--spacing-xxl) var(--spacing-md);
}

.section-alt {
    background-color: var(--surface-variant);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--primary);
}

.title-icon {
    font-size: 2.5rem;
}

.subsection-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-dark);
}

/* ===== Cards ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}


.culture-section .card {
    background: rgba(255, 255, 255, 0.08);
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(6px);
}

.card.elevated {
    box-shadow: var(--shadow-1);
}

.card.elevated:hover {
    box-shadow: var(--shadow-3);
    transform: translateY(-4px);
}

.card-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.card-icon .material-icons {
    font-size: 32px;
    color: var(--on-primary);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary-dark);
}

.card-text {
    color: var(--on-surface-variant);
    line-height: 1.6;
}

/* ===== Comparison Table ===== */
.comparison-section {
    margin-top: var(--spacing-xxl);
}

.table-container {
    overflow-x: auto;
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--surface-variant);
}

.comparison-table thead {
    background-color: var(--primary);
    color: var(--on-primary);
}

.comparison-table th {
    font-weight: 600;
}

.comparison-table tbody tr:hover {
    background-color: var(--surface-variant);
}

.highlight-col {
    background-color: rgba(25, 118, 210, 0.08);
    font-weight: 500;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-success {
    background-color: var(--success);
    color: white;
}

.badge-error {
    background-color: var(--error);
    color: white;
}

/* ===== Eligibility Section ===== */
.eligibility-checklist {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.checklist-card,
.requirements-card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-1);
}

.checklist-title,
.requirements-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary);
}

.checklist {
    list-style: none;
}

.checklist li {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--surface-variant);
    border-radius: var(--radius-md);
}

.check-icon {
    color: var(--success);
    flex-shrink: 0;
}

.check-content {
    flex: 1;
}

.info-box {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: #E3F2FD;
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
}

.info-box .material-icons {
    color: var(--primary);
}

/* ===== Document Section ===== */
.document-section {
    margin-top: var(--spacing-xl);
}

.document-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.doc-category {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-1);
}

.doc-category-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary-dark);
}

.doc-list {
    list-style: none;
}

.doc-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm);
}

.doc-list .material-icons {
    color: var(--primary);
    font-size: 20px;
    margin-top: 2px;
}

/* ===== Timeline ===== */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.timeline-marker {
    position: absolute;
    left: -40px;
    width: 32px;
    height: 32px;
    background-color: var(--primary);
    color: var(--on-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    box-shadow: var(--shadow-2);
}

.timeline-content {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-1);
}

.timeline-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary-dark);
}

.timeline-content ul {
    margin-left: var(--spacing-lg);
    margin-top: var(--spacing-sm);
}

.timeline-content li {
    margin-bottom: var(--spacing-sm);
}

/* ===== Costs & Timeline Section ===== */
.cost-timeline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
}

.cost-breakdown,
.timeline-info {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-1);
}

.cost-table {
    margin-bottom: var(--spacing-md);
}

.cost-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--surface-variant);
}

.cost-row.total {
    background-color: var(--surface-variant);
    font-weight: 600;
    border-bottom: none;
}

.cost-value {
    color: var(--primary);
    font-weight: 600;
}

.cost-note {
    font-size: 0.875rem;
    color: var(--on-surface-variant);
    font-style: italic;
}

.timeline-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.time-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--surface-variant);
    border-radius: var(--radius-md);
}

.time-icon {
    font-size: 48px;
    color: var(--primary);
}

.time-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

.time-label {
    font-size: 1rem;
    color: var(--on-surface-variant);
}

/* ===== Resources Section ===== */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.resource-card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-1);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.resource-card:hover {
    box-shadow: var(--shadow-3);
    transform: translateY(-4px);
}

.resource-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.resource-icon .material-icons {
    font-size: 28px;
    color: var(--on-secondary);
}

.resource-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

.resource-desc {
    color: var(--on-surface-variant);
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.resource-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: gap var(--transition-fast);
}

.resource-link:hover {
    gap: var(--spacing-sm);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--primary-dark);
    color: var(--on-primary);
    padding: var(--spacing-xl) var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-text {
    opacity: 0.9;
    line-height: 1.6;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0.8;
}

/* ===== Floating Action Button (FAB) ===== */
.fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
    color: var(--on-secondary);
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    z-index: 999;
}

.fab:hover {
    box-shadow: var(--shadow-4);
    transform: scale(1.1);
}

.fab.active {
    transform: rotate(45deg);
}

.fab .material-icons {
    font-size: 24px;
}

.fab-menu {
    position: fixed;
    bottom: 90px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
    z-index: 998;
}

.fab-menu.active {
    opacity: 1;
    pointer-events: all;
}

.fab-action {
    width: 48px;
    height: 48px;
    background-color: var(--surface);
    color: var(--primary);
    border-radius: 50%;
    box-shadow: var(--shadow-2);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

.fab-action:hover {
    box-shadow: var(--shadow-3);
    transform: scale(1.1);
}

.fab-action::before {
    content: attr(data-tooltip);
    position: absolute;
    right: 60px;
    background-color: var(--on-surface);
    color: var(--surface);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    font-size: 0.875rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.fab-action:hover::before {
    opacity: 1;
}

/* ===== Animations ===== */
@keyframes float {
    0% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-12px) scale(1.03);
    }
    100% {
        transform: translateY(0) scale(1);
    }
}

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

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-menu {
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background-color: var(--primary);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-2);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-support-item {
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-sm);
        border-top: 1px solid rgba(255, 255, 255, 0.2);
    }

    .nav-support-btn {
        width: 100%;
        justify-content: center;
    }

    .lang-switch-item {
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-sm);
        border-top: 1px solid rgba(255, 255, 255, 0.2);
    }

    .lang-switch-btn {
        width: 100%;
        justify-content: center;
    }

    .brand-tagline {
        font-size: 0.65rem;
    }

    .welcome-banner {
        padding: var(--spacing-xs) var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .welcome-text {
        font-size: 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .card-grid,
    .eligibility-checklist,
    .document-grid,
    .cost-timeline-grid,
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: column;
    }
    
    .stat-card {
        width: 100%;
    }

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

    .culture-journey {
        padding: var(--spacing-lg);
    }

    .culture-journey-grid {
        grid-template-columns: 1fr;
    }

    .culture-ornament {
        display: none;
    }

    .culture-intro {
        text-align: left;
    }

    .culture-card-icon {
        margin-top: -24px;
    }

    .culture-card {
        gap: var(--spacing-md);
    }

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

    .gallery-item {
        min-height: 240px;
    }

    .gallery-item-wide,
    .gallery-item-tall {
        grid-column: span 1;
        grid-row: span 1;
    }

    .gallery-caption {
        bottom: var(--spacing-md);
        left: var(--spacing-md);
        right: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .culture-chip {
        width: 100%;
    }

    .culture-chips {
        justify-content: center;
    }
}

/* ===== 独立浮动支持按钮 ===== */
.floating-support-btn {
    position: fixed;
    bottom: 100px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--china-red), var(--lotus-pink));
    color: var(--on-primary);
    border: none;
    border-radius: 28px;
    box-shadow: 0 4px 16px rgba(211, 47, 47, 0.4);
    cursor: pointer;
    font-family: 'Roboto', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    z-index: 997;
    opacity: 0;
    pointer-events: none;
    animation: floatPulse 2s ease-in-out infinite;
}

@keyframes floatPulse {
    0%, 100% {
        transform: translateY(0) scale(1);
        box-shadow: 0 4px 16px rgba(211, 47, 47, 0.4);
    }
    50% {
        transform: translateY(-4px) scale(1.02);
        box-shadow: 0 8px 24px rgba(211, 47, 47, 0.5);
    }
}

.floating-support-btn.visible {
    opacity: 1;
    pointer-events: all;
}

.floating-support-btn:hover {
    background: linear-gradient(135deg, var(--lotus-pink), var(--china-red));
    box-shadow: 0 8px 24px rgba(211, 47, 47, 0.6);
    transform: translateY(-4px) scale(1.05);
    animation: none;
}

.floating-support-btn .material-icons {
    font-size: 24px;
}

.floating-support-text {
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* ===== Support Modal (混淆命名避免广告拦截) ===== */
.user-feedback-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.user-feedback-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.appreciation-container {
    background-color: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-4);
    max-width: 420px;
    width: 90%;
    max-height: 85vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-normal);
    position: relative;
}

.user-feedback-overlay.active .appreciation-container {
    transform: scale(1) translateY(0);
}

.appreciation-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--on-primary);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.appreciation-title {
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.close-appreciation {
    background: none;
    border: none;
    color: var(--on-primary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.close-appreciation:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.appreciation-body {
    padding: var(--spacing-xl);
    text-align: center;
}

.appreciation-message {
    font-size: 1rem;
    color: var(--on-surface-variant);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.qr-display-area {
    background: linear-gradient(135deg, #f5f5f5, #ffffff);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.qr-display-area::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

.qr-image-wrapper {
    position: relative;
    display: inline-block;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.qr-code-img {
    display: block;
    width: 100%;
    max-width: 280px;
    height: auto;
    border-radius: var(--radius-md);
}

.appreciation-note {
    font-size: 0.875rem;
    color: var(--on-surface-variant);
    font-style: italic;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.appreciation-note .material-icons {
    font-size: 18px;
    color: var(--china-red);
}

/* FAB 按钮添加 - 混淆命名 */
.user-action-btn {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--china-red), var(--lotus-pink));
    color: var(--on-primary);
    border-radius: 50%;
    box-shadow: var(--shadow-2);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
    animation: heartbeat 2s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    10%, 30% {
        transform: scale(1.1);
    }
    20%, 40% {
        transform: scale(1);
    }
}

.user-action-btn:hover {
    box-shadow: var(--shadow-3);
    transform: scale(1.15);
    animation: none;
}

.user-action-btn .material-icons {
    font-size: 24px;
}

/* 响应式调整 */
@media (max-width: 480px) {
    .appreciation-container {
        width: 95%;
        max-width: none;
    }

    .appreciation-header {
        padding: var(--spacing-md);
    }

    .appreciation-title {
        font-size: 1.25rem;
    }

    .appreciation-body {
        padding: var(--spacing-lg);
    }

    .qr-code-img {
        max-width: 240px;
    }

    .floating-support-btn {
        bottom: 80px;
        right: 16px;
        padding: 10px 16px;
        font-size: 0.875rem;
    }

    .floating-support-btn .material-icons {
        font-size: 20px;
    }
}