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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang TC", "Microsoft JhengHei", "Heiti TC", "Noto Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: #333;
    line-height: 1.6;
    background: #f8fafc;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.section-header p {
    font-size: 16px;
    color: #666;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    padding: 15px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
}

.logo-icon {
    font-size: 26px;
}

.logo-text {
    font-size: 20px;
    color: #1a1a2e;
}

.nav-links {
    display: flex;
    gap: 35px;
}

.nav-links a {
    color: #555;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #00a600;
}

.nav-cart {
    position: relative;
}

.cart-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #00a600;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.cart-btn:hover {
    background: #008800;
    transform: translateY(-2px);
}

.cart-count {
    background: #fff;
    color: #00a600;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
}

/* Hero */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 18px;
    opacity: 0.95;
    margin-bottom: 35px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s;
}

.btn-primary {
    background: #00a600;
    color: #fff;
}

.btn-primary:hover {
    background: #008800;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 166, 0, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
}

.btn-full {
    width: 100%;
}

/* Features Bar */
.features-bar {
    background: #fff;
    padding: 30px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    margin-bottom: 60px;
}

.features-bar-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-bar-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 10px;
}

.feature-bar-icon {
    font-size: 32px;
}

.feature-bar-item strong {
    display: block;
    font-size: 15px;
    color: #1a1a2e;
}

.feature-bar-item span {
    font-size: 13px;
    color: #666;
}

/* Products Section */
.products-section {
    padding: 60px 0 100px;
}

.products-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    border: 2px solid #e0e0e0;
    background: #fff;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-btn:hover {
    border-color: #00a600;
    color: #00a600;
}

.filter-btn.active {
    background: #00a600;
    border-color: #00a600;
    color: #fff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.product-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.product-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #ff4757;
    color: #fff;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    z-index: 1;
}

.product-image {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 70px;
    background: linear-gradient(135deg, #f8fafc 0%, #e8ecf0 100%);
}

.product-info {
    padding: 20px;
}

.product-category {
    font-size: 12px;
    color: #00a600;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product-name {
    font-size: 17px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 8px 0;
}

.product-desc {
    font-size: 13px;
    color: #888;
    margin-bottom: 12px;
    line-height: 1.5;
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 15px;
}

.price-current {
    font-size: 22px;
    font-weight: 700;
    color: #ff4757;
}

.price-original {
    font-size: 14px;
    color: #aaa;
    text-decoration: line-through;
}

.btn-add-cart {
    width: 100%;
    padding: 12px;
    background: #1a1a2e;
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-add-cart:hover {
    background: #00a600;
}

/* About Section */
.about-section {
    padding: 80px 0;
    background: #fff;
}

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

.about-text h2 {
    font-size: 32px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 25px;
}

.about-text p {
    font-size: 16px;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-image-placeholder {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    height: 350px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.about-image-placeholder span {
    font-size: 80px;
    margin-bottom: 20px;
}

.about-image-placeholder p {
    font-size: 20px;
    font-weight: 600;
}

/* Contact Section */
.contact-section {
    padding: 80px 0;
    background: #f8fafc;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.contact-icon {
    font-size: 28px;
}

.contact-item strong {
    display: block;
    font-size: 14px;
    color: #1a1a2e;
    margin-bottom: 3px;
}

.contact-item p {
    font-size: 14px;
    color: #666;
}

.contact-form {
    background: #fff;
    padding: 35px;
    border-radius: 16px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.05);
}

.contact-form h3 {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 25px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e8e8e8;
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00a600;
}

/* Cart Sidebar */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    max-width: 100vw;
    height: 100vh;
    background: #fff;
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.15);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    transition: right 0.3s ease;
}

.cart-sidebar.open {
    right: 0;
}

.cart-sidebar-header {
    padding: 20px 25px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-sidebar-header h3 {
    font-size: 18px;
    font-weight: 700;
}

.cart-close {
    width: 36px;
    height: 36px;
    border: none;
    background: #f5f5f5;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s;
}

.cart-close:hover {
    background: #ff4757;
    color: #fff;
}

.cart-sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.cart-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #999;
}

.cart-empty span {
    font-size: 60px;
    margin-bottom: 15px;
}

.cart-empty p {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.cart-empty small {
    font-size: 14px;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.cart-item {
    display: grid;
    grid-template-columns: 60px 1fr auto auto auto;
    gap: 12px;
    align-items: center;
    padding: 15px;
    background: #f8fafc;
    border-radius: 12px;
}

.cart-item-image {
    width: 60px;
    height: 60px;
    background: #fff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}

.cart-item-info h4 {
    font-size: 14px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 3px;
}

.cart-item-price {
    font-size: 13px;
    color: #888;
}

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

.cart-item-quantity button {
    width: 28px;
    height: 28px;
    border: 1px solid #ddd;
    background: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.2s;
}

.cart-item-quantity button:hover {
    background: #00a600;
    color: #fff;
    border-color: #00a600;
}

.cart-item-quantity span {
    font-size: 14px;
    font-weight: 600;
    min-width: 20px;
    text-align: center;
}

.cart-item-total {
    font-size: 14px;
    font-weight: 700;
    color: #ff4757;
    min-width: 80px;
    text-align: right;
}

.cart-item-remove {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: #999;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.2s;
}

.cart-item-remove:hover {
    color: #ff4757;
}

.cart-sidebar-footer {
    padding: 20px;
    border-top: 1px solid #eee;
    background: #fff;
}

.cart-summary {
    margin-bottom: 20px;
}

.cart-summary-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
    color: #666;
}

.cart-summary-total {
    border-top: 2px solid #eee;
    margin-top: 10px;
    padding-top: 15px;
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
}

.cart-summary-total span:last-child {
    color: #ff4757;
}

.btn-checkout {
    margin-bottom: 10px;
}

.btn-clear {
    width: 100%;
    padding: 12px;
    background: transparent;
    border: 2px solid #ddd;
    color: #666;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-clear:hover {
    border-color: #ff4757;
    color: #ff4757;
}

.cart-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.cart-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal.open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #fff;
    border-radius: 20px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-header {
    padding: 25px 30px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 1;
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 700;
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: #f5f5f5;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s;
}

.modal-close:hover {
    background: #ff4757;
    color: #fff;
}

.checkout-section {
    padding: 25px 30px;
    border-bottom: 1px solid #eee;
}

.checkout-section h4 {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 20px;
}

.payment-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.payment-option {
    display: block;
    cursor: pointer;
}

.payment-option input {
    display: none;
}

.payment-option-content {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    border: 2px solid #e8e8e8;
    border-radius: 12px;
    transition: all 0.3s;
}

.payment-option input:checked + .payment-option-content {
    border-color: #00a600;
    background: rgba(0, 166, 0, 0.05);
}

.payment-option-content .payment-icon {
    font-size: 24px;
}

.payment-option-content .payment-name {
    font-size: 14px;
    font-weight: 500;
}

.checkout-items {
    margin-bottom: 20px;
}

.checkout-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    font-size: 14px;
    color: #555;
    border-bottom: 1px dashed #eee;
}

.checkout-totals {
    background: #f8fafc;
    padding: 15px;
    border-radius: 10px;
}

.checkout-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
    color: #666;
}

.checkout-total {
    border-top: 2px solid #ddd;
    margin-top: 10px;
    padding-top: 15px;
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
}

.checkout-total span:last-child {
    color: #ff4757;
}

.checkout-notice {
    padding: 15px 30px;
    background: #fff8e1;
    font-size: 13px;
    color: #666;
}

.checkout-summary {
    border-bottom: none;
}

.checkout-summary .btn {
    margin: 0 30px 25px;
}

.success-content {
    text-align: center;
    padding: 40px;
}

.success-icon {
    font-size: 70px;
    margin-bottom: 20px;
}

.success-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.success-content p {
    font-size: 15px;
    color: #666;
    margin-bottom: 10px;
}

.order-info {
    background: #f8fafc;
    padding: 20px;
    border-radius: 12px;
    margin: 25px 0;
}

.order-info p {
    font-size: 14px;
}

.order-info p:last-child {
    font-size: 22px;
    font-weight: 700;
    color: #00a600;
}

/* Notification */
.notification {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: #1a1a2e;
    color: #fff;
    padding: 15px 30px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    z-index: 4000;
    opacity: 0;
    transition: all 0.3s;
}

.notification.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Footer */
.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand .logo-text {
    color: #fff;
}

.footer-brand p {
    margin-top: 15px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-bottom: 12px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #00a600;
}

.footer-contact p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 25px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 5px;
}

/* Responsive */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .about-content {
        grid-template-columns: 1fr;
    }

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

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

    .hero h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .product-image {
        height: 120px;
        font-size: 50px;
    }

    .product-info {
        padding: 15px;
    }

    .product-name {
        font-size: 15px;
    }

    .price-current {
        font-size: 18px;
    }

    .cart-sidebar {
        width: 100%;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .section-header h2 {
        font-size: 26px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

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

    .features-bar-grid {
        grid-template-columns: 1fr;
    }

    .filter-btn {
        padding: 8px 18px;
        font-size: 13px;
    }

    .cart-item {
        grid-template-columns: 50px 1fr;
        gap: 10px;
    }

    .cart-item-quantity,
    .cart-item-total {
        grid-column: 2;
    }

    .cart-item-remove {
        position: absolute;
        top: 10px;
        right: 10px;
    }
}