/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    --green: #1a5632;
    --green-dark: #0f3a20;
    --green-light: #2a7a4a;
    --gold: #c8a44e;
    --gold-light: #e0c06a;
    --white: #ffffff;
    --gray-50: #f8f9fa;
    --gray-100: #f0f1f3;
    --gray-200: #e0e2e6;
    --gray-600: #6b7280;
    --gray-800: #1f2937;
    --font-en: 'Inter', sans-serif;
    --font-zh-title: 'Noto Serif SC', serif;
    --font-zh-body: 'Noto Sans SC', sans-serif;
    --nav-height: 70px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-zh-body), var(--font-en);
    color: var(--gray-800);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
}

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

.section {
    padding: 100px 0;
}

.section-title {
    font-family: var(--font-zh-title);
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--green);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--gold);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background var(--transition), box-shadow var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: var(--green-dark);
    box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-family: var(--font-zh-title);
    font-weight: 700;
    font-size: 1.15rem;
    white-space: nowrap;
}

.nav-logo img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 36px;
}

.nav-links a {
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 6px 0;
    position: relative;
    transition: opacity var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: width var(--transition);
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-toggle {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.3);
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
    font-family: var(--font-en);
}

.lang-toggle:hover {
    background: rgba(255,255,255,0.25);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    flex-direction: column;
    gap: 5px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    background: url('../images/hero/team-group.png') center/cover no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(15, 58, 32, 0.85) 0%,
        rgba(26, 86, 50, 0.75) 50%,
        rgba(15, 58, 32, 0.80) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 0 24px;
}

.hero-content h1 {
    font-family: var(--font-zh-title);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 0.05em;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 8px;
    font-weight: 400;
}

.hero-tagline {
    font-size: 1.1rem;
    opacity: 0.8;
    margin-bottom: 40px;
    font-style: italic;
}

.hero-cta {
    display: inline-block;
    padding: 14px 40px;
    border: 2px solid var(--gold);
    color: var(--gold);
    border-radius: 30px;
    font-weight: 600;
    font-size: 1rem;
    transition: background var(--transition), color var(--transition);
}

.hero-cta:hover {
    background: var(--gold);
    color: var(--green-dark);
}

.hero-cta-signup {
    background: var(--gold);
    color: var(--green-dark);
    margin-left: 16px;
}

.hero-cta-signup:hover {
    background: var(--gold-light);
}

.nav-signup {
    background: var(--gold) !important;
    color: var(--green-dark) !important;
    padding: 6px 18px !important;
    border-radius: 20px;
    font-weight: 600 !important;
    transition: background var(--transition);
}

.nav-signup:hover {
    background: var(--gold-light) !important;
}

.nav-signup::after {
    display: none !important;
}

/* ========================================
   About Section
   ======================================== */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1rem;
    color: var(--gray-800);
    line-height: 1.9;
}

.about-image img {
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

/* ========================================
   Timeline
   ======================================== */
.achievements {
    background: var(--gray-50);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto 80px;
    padding-left: 60px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--green), var(--gold));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

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

.timeline-marker {
    position: absolute;
    left: -60px;
    top: 0;
    width: 42px;
    height: 42px;
    background: var(--green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    font-family: var(--font-en);
    box-shadow: 0 0 0 4px var(--gray-50), 0 2px 8px rgba(0,0,0,0.15);
}

.timeline-content {
    background: var(--white);
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.timeline-content h3 {
    font-family: var(--font-zh-title);
    font-size: 1.35rem;
    color: var(--green);
    margin-bottom: 14px;
}

.timeline-content p {
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 20px;
    color: var(--gray-800);
}

.timeline-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.stat {
    background: var(--gray-50);
    padding: 14px 22px;
    border-radius: 10px;
    text-align: center;
    min-width: 100px;
    border: 1px solid var(--gray-200);
}

.stat.highlight {
    background: linear-gradient(135deg, var(--green), var(--green-light));
    border-color: transparent;
}

.stat.highlight .stat-value {
    color: var(--white);
    font-size: 1.6rem;
}

.stat.highlight .stat-label {
    color: rgba(255,255,255,0.9);
}

.stat-value {
    display: block;
    font-family: var(--font-en);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--green);
    margin-bottom: 4px;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-600);
}

/* ========================================
   Gallery
   ======================================== */
.gallery-title {
    font-family: var(--font-zh-title);
    font-size: 1.5rem;
    text-align: center;
    color: var(--green);
    margin-bottom: 36px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.gallery-item {
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 3/2;
    position: relative;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0);
    transition: background var(--transition);
    pointer-events: none;
}

.gallery-item:hover::after {
    background: rgba(0,0,0,0.1);
}

/* ========================================
   Lightbox
   ======================================== */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0,0,0,0.92);
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox-content img.loaded {
    opacity: 1;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    font-size: 2rem;
    padding: 12px;
    opacity: 0.7;
    transition: opacity var(--transition);
    z-index: 10;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    opacity: 1;
}

.lightbox-close {
    top: 20px;
    right: 24px;
    font-size: 2.5rem;
}

.lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

/* ========================================
   Merchandise
   ======================================== */
.merch {
    background: var(--white);
}

.merch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 28px;
    margin-bottom: 60px;
}

.merch-card {
    background: var(--white);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border: 1px solid var(--gray-200);
    transition: transform var(--transition), box-shadow var(--transition);
}

.merch-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 36px rgba(0,0,0,0.12);
}

.merch-image {
    aspect-ratio: 1;
    overflow: hidden;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
}

.merch-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.merch-zoomable {
    cursor: zoom-in;
    position: relative;
}

.merch-zoomable::after {
    content: '🔍';
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 1.2rem;
    background: rgba(255,255,255,0.85);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.merch-zoomable:hover::after {
    opacity: 1;
}

/* Merch Zoom Overlay */
.merch-zoom-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2500;
    background: rgba(0,0,0,0.88);
    cursor: zoom-out;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.merch-zoom-overlay.active {
    display: flex;
}

.merch-zoom-overlay img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
}

.merch-sticker-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    padding: 4px;
}

.merch-sticker-grid img {
    aspect-ratio: 1;
    object-fit: contain;
    border-radius: 6px;
}

.merch-dual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    padding: 4px;
}

.merch-dual img {
    border-radius: 6px;
    object-fit: cover;
    height: 100%;
}

.merch-placeholder {
    background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
}

.placeholder-icon {
    font-size: 4rem;
}

.merch-info {
    padding: 18px 20px;
}

.merch-info h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--gray-800);
}

.merch-price {
    font-family: var(--font-en);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--green);
}

.size-chart-link {
    display: inline-block;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--gold);
    border-bottom: 1px dashed var(--gold);
    transition: color var(--transition);
}

.size-chart-link:hover {
    color: var(--green);
}

/* Purchase Section */
.merch-purchase {
    text-align: center;
    padding: 48px 32px;
    background: var(--gray-50);
    border-radius: 16px;
    border: 1px solid var(--gray-200);
}

.merch-purchase p {
    font-size: 1.1rem;
    margin-bottom: 24px;
    color: var(--gray-800);
}

.qr-code {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.qr-code img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.qr-code span {
    font-size: 0.9rem;
    color: var(--gray-600);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--green-dark);
    color: var(--white);
    padding: 48px 0 32px;
}

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

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.footer-logo img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.footer-name {
    font-family: var(--font-zh-title);
    font-size: 1.2rem;
    font-weight: 700;
}

.footer-org {
    font-size: 0.85rem;
    opacity: 0.8;
}

.footer-tagline {
    font-style: italic;
    opacity: 0.7;
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.footer-copy {
    font-size: 0.8rem;
    opacity: 0.5;
    font-family: var(--font-en);
}

/* ========================================
   Cart Button (Nav)
   ======================================== */
.cart-btn {
    position: relative;
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
}

.cart-badge {
    position: absolute;
    top: -6px;
    right: -8px;
    background: var(--gold);
    color: var(--green-dark);
    font-size: 0.7rem;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    font-family: var(--font-en);
}

/* Add to Cart Button */
.add-to-cart-btn {
    display: block;
    width: 100%;
    margin-top: 12px;
    padding: 10px;
    background: var(--green);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
    font-family: var(--font-zh-body), var(--font-en);
}

.add-to-cart-btn:hover {
    background: var(--green-light);
}

/* Cart Notification Toast */
.cart-notification {
    position: fixed;
    top: 90px;
    right: 24px;
    background: var(--green);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 3000;
    transform: translateX(120%);
    transition: transform 0.3s ease;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

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

/* ========================================
   Cart Drawer
   ======================================== */
.cart-drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 2500;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.cart-drawer.open ~ .cart-drawer-overlay,
.cart-drawer.open + .cart-drawer-overlay {
    opacity: 1;
    pointer-events: all;
}

/* Fix: overlay is before drawer in DOM, so use :has or JS.
   We'll rely on the drawer.open class propagation via sibling.
   Actually the overlay is before the drawer - let's use body class approach in JS instead.
   For now, we handle this via the .open class on drawer with general sibling. */

.cart-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 380px;
    max-width: 90vw;
    height: 100vh;
    background: var(--white);
    z-index: 2600;
    transform: translateX(100%);
    transition: transform var(--transition);
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 24px rgba(0,0,0,0.15);
}

.cart-drawer.open {
    transform: translateX(0);
}

.cart-drawer.open ~ .cart-drawer-overlay {
    opacity: 1;
    pointer-events: all;
}

.cart-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
}

.cart-drawer-header h3 {
    font-family: var(--font-zh-title);
    font-size: 1.2rem;
    color: var(--green);
}

.cart-drawer-close {
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--gray-600);
    line-height: 1;
}

.cart-drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px 24px;
}

.cart-empty {
    text-align: center;
    color: var(--gray-600);
    padding: 40px 0;
}

.cart-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--gray-100);
}

.cart-item-name {
    font-weight: 500;
    font-size: 0.95rem;
    display: block;
    margin-bottom: 2px;
}

.cart-item-price {
    font-family: var(--font-en);
    color: var(--green);
    font-weight: 600;
    font-size: 0.9rem;
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.cart-qty-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--gray-200);
    background: var(--white);
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}

.cart-qty-btn:hover {
    background: var(--gray-100);
}

.cart-qty {
    font-family: var(--font-en);
    font-weight: 600;
    min-width: 20px;
    text-align: center;
}

.cart-remove-btn {
    background: none;
    border: none;
    color: var(--gray-600);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 4px;
    margin-left: 4px;
    transition: color var(--transition);
}

.cart-remove-btn:hover {
    color: #e53e3e;
}

.cart-drawer-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--gray-200);
}

.cart-total-row {
    display: flex;
    justify-content: space-between;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.cart-total-row span:last-child {
    font-family: var(--font-en);
    color: var(--green);
}

.cart-checkout-btn {
    display: none;
    width: 100%;
    padding: 14px;
    background: var(--green);
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
    font-family: var(--font-zh-body), var(--font-en);
}

.cart-checkout-btn:hover {
    background: var(--green-light);
}

/* ========================================
   Modal (Size Selector & Checkout)
   ======================================== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 3000;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal-overlay.active {
    display: flex;
}

.modal-box {
    background: var(--white);
    border-radius: 16px;
    padding: 32px;
    max-width: 420px;
    width: 100%;
    text-align: center;
    position: relative;
    box-shadow: 0 16px 48px rgba(0,0,0,0.2);
}

.modal-box h4 {
    font-family: var(--font-zh-title);
    font-size: 1.2rem;
    color: var(--green);
    margin-bottom: 20px;
}

.variant-options {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.variant-btn {
    min-width: 52px;
    padding: 12px 20px;
    border-radius: 10px;
    border: 2px solid var(--gray-200);
    background: var(--white);
    font-family: var(--font-zh-body), var(--font-en);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
}

.variant-btn:hover {
    border-color: var(--green);
    background: rgba(26,86,50,0.05);
}

.modal-cancel {
    background: none;
    border: none;
    color: var(--gray-600);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 8px 16px;
}

.modal-close-btn {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--gray-600);
    line-height: 1;
}

/* ========================================
   Checkout Modal
   ======================================== */
.checkout-box {
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    text-align: left;
}

.checkout-box h3 {
    font-family: var(--font-zh-title);
    font-size: 1.3rem;
    color: var(--green);
    margin-bottom: 20px;
    text-align: center;
}

.checkout-summary {
    background: var(--gray-50);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 24px;
}

.checkout-line {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 0.9rem;
}

.checkout-total {
    border-top: 1px solid var(--gray-200);
    margin-top: 8px;
    padding-top: 10px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--green);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: var(--font-zh-body), var(--font-en);
    transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--green);
}

.payment-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 20px 0;
}

.payment-option {
    background: var(--gray-50);
    border-radius: 10px;
    padding: 16px;
    text-align: center;
    border: 1px solid var(--gray-200);
}

.payment-option h5 {
    font-family: var(--font-en);
    font-size: 1rem;
    font-weight: 700;
    color: var(--green);
    margin-bottom: 8px;
}

.payment-option p {
    font-size: 0.85rem;
    color: var(--gray-800);
    margin-bottom: 4px;
    word-break: break-all;
}

.payment-qr {
    width: 120px;
    margin: 8px auto 0;
    border-radius: 8px;
}

.checkout-note {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin-bottom: 20px;
    line-height: 1.6;
}

.checkout-submit-btn {
    display: block;
    width: 100%;
    padding: 14px;
    background: var(--green);
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
    font-family: var(--font-zh-body), var(--font-en);
}

.checkout-submit-btn:hover {
    background: var(--green-light);
}

.checkout-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.checkout-success {
    text-align: center;
    padding: 20px 0;
}

.success-icon {
    width: 64px;
    height: 64px;
    background: var(--green);
    color: var(--white);
    border-radius: 50%;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.checkout-success h4 {
    font-family: var(--font-zh-title);
    color: var(--green);
    margin-bottom: 12px;
}

.checkout-success p {
    color: var(--gray-600);
    margin-bottom: 24px;
    font-size: 0.95rem;
}

/* ========================================
   Scroll Animations
   ======================================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    :root {
        --nav-height: 60px;
    }

    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--green-dark);
        flex-direction: column;
        align-items: center;
        padding: 24px 0;
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        transition: transform var(--transition), opacity var(--transition);
        pointer-events: none;
    }

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

    .nav-links a {
        padding: 14px 0;
        font-size: 1.1rem;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 64px 0;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-image {
        order: -1;
    }

    .timeline {
        padding-left: 50px;
    }

    .timeline::before {
        left: 15px;
    }

    .timeline-marker {
        left: -50px;
        width: 34px;
        height: 34px;
        font-size: 0.65rem;
    }

    .timeline-content {
        padding: 22px;
    }

    .timeline-stats {
        gap: 10px;
    }

    .stat {
        padding: 10px 14px;
        min-width: 80px;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 8px;
    }

    .merch-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 16px;
    }

    .lightbox-prev {
        left: 8px;
    }

    .lightbox-next {
        right: 8px;
    }

    .footer-logo {
        flex-direction: column;
        text-align: center;
    }

    .cart-drawer {
        width: 100%;
        max-width: 100vw;
    }

    .payment-info {
        grid-template-columns: 1fr;
    }

    .hero-cta-signup {
        margin-left: 0;
        margin-top: 12px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

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

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

    .timeline-stats {
        flex-direction: column;
    }

    .stat {
        min-width: auto;
    }
}