/* ==================== 基础变量 ==================== */
:root {
    --primary: #e67e22;
    --primary-dark: #d35400;
    --primary-light: #f39c12;
    --secondary: #c0392b;
    --accent: #e74c3c;
    --dark: #2c3e50;
    --gray: #7f8c8d;
    --light: #f5f5f5;
    --white: #ffffff;
    --shadow: 0 4px 15px rgba(0,0,0,0.1);
    --radius: 16px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background: #fafafa;
}

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

img {
    width: 100%;
    display: block;
}

button {
    cursor: pointer;
    border: none;
    font-family: inherit;
}

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

/* ==================== 公告栏 ==================== */
.announcement-bar {
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    color: white;
    padding: 6px 0;
    text-align: center;
    font-size: 13px;
}

.announcement-bar i {
    margin-right: 8px;
}

/* ==================== 导航栏 ==================== */
.navbar {
    background: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 50px;
    width: auto;
}

.logo:hover {
    opacity: 0.85;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-weight: 600;
    font-size: 20px;
    color: var(--dark);
    transition: var(--transition);
    padding: 8px 20px;
    border-radius: 6px;
}

.nav-links a:hover,
.nav-links a.active {
    background: rgba(230, 126, 34, 0.12);
    color: var(--primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-btn, .cart-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: var(--transition);
}

.user-btn {
    background: var(--light);
    color: var(--dark);
}

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

.cart-btn {
    background: var(--primary);
    color: white;
    position: relative;
}

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

.cart-count {
    background: var(--accent);
    color: white;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 10px;
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--light);
    font-size: 18px;
}

/* ==================== 轮播图区域 ==================== */
.hero-section {
    position: relative;
    margin: 20px;
}

.carousel-container {
    position: relative;
    width: 100%;
    height: 670px;
    overflow: hidden;
    border-radius: var(--radius);
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 40px;
}

.carousel-overlay h1 {
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 16px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    letter-spacing: 4px;
}

.hero-subtitle {
    font-size: 20px;
    opacity: 0.95;
    margin-bottom: 24px;
}

.cta-btn {
    background: white;
    color: var(--primary);
    padding: 14px 36px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition);
}

.indicator.active {
    background: white;
    width: 30px;
    border-radius: 5px;
}

.carousel-prev, .carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255,255,255,0.9);
    color: var(--primary);
    font-size: 18px;
    box-shadow: var(--shadow);
    z-index: 10;
    transition: var(--transition);
}

.carousel-prev:hover, .carousel-next:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev { left: 20px; }
.carousel-next { right: 20px; }

/* ==================== 服务保障 ==================== */
.service-bar {
    background: white;
    padding: 30px 0;
    margin: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.service-bar .container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.service-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 0 24px;
    border-right: 1px solid #eee;
}

.service-item:last-child {
    border-right: none;
}

.service-item i {
    font-size: 36px !important;
    color: var(--primary) !important;
    flex-shrink: 0;
    display: inline-block !important;
    width: 40px;
    height: 40px;
    text-align: center;
    line-height: 40px;
}

.service-item:nth-child(2) i {
    font-size: 38px !important;
}

.service-item h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 2px;
}

.service-item p {
    font-size: 13px;
    color: var(--gray);
}

/* ==================== 分类区域 ==================== */
.categories-section {
    padding: 40px 0;
    margin: 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 30px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.section-header h2 i {
    color: var(--primary);
    margin-right: 8px;
}

.section-header p {
    font-size: 15px;
    color: var(--gray);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 20px;
}

.category-card {
    background: white;
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.15);
}

.category-card.featured {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
}

.category-card.featured h3,
.category-card.featured p {
    color: white;
}

.category-icon {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    margin: 0 auto 14px;
    overflow: hidden;
    border: 3px solid #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.category-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-card h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.category-card p {
    font-size: 12px;
    color: var(--gray);
}

.featured-tag {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 10px;
}

/* ==================== 商品区域 ==================== */
.products-section {
    padding: 40px 0;
    margin: 20px;
}

.tab-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.tab-btn {
    padding: 8px 20px;
    border-radius: 20px;
    background: white;
    color: var(--gray);
    font-weight: 500;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(230,126,34,0.2);
}

.product-image {
    position: relative;
    height: 160px;
    overflow: hidden;
}

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

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-tags {
    position: absolute;
    top: 10px;
    left: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
    color: white;
}

.badge.hot { background: #e74c3c; }
.badge.new { background: #e67e22; }
.badge.recommend { background: #f39c12; }

.product-quick-actions {
    position: absolute;
    bottom: 10px;
    right: 10px;
    display: flex;
    gap: 8px;
    opacity: 0;
    transform: translateY(10px);
    transition: var(--transition);
}

.product-card:hover .product-quick-actions {
    opacity: 1;
    transform: translateY(0);
}

.quick-action-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: white;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.quick-action-btn:hover {
    background: var(--primary);
    color: white;
}

.quick-view-btn {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    padding: 8px 20px;
    background: rgba(255,255,255,0.95);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .quick-view-btn {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.quick-view-btn:hover {
    background: var(--primary);
    color: white;
}

.product-info {
    padding: 16px;
}

.product-info h4 {
    font-size: 16px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-desc {
    font-size: 13px;
    color: #7f8c8d;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.price-current {
    font-size: 24px;
    font-weight: 900;
    color: #e74c3c;
}

.price-symbol {
    font-size: 16px;
    font-weight: 800;
    color: #e74c3c;
}

.price-original {
    font-size: 13px;
    color: #bbb;
    text-decoration: line-through;
    font-weight: 400;
}

.product-sales {
    font-size: 12px;
    color: var(--gray);
}

.product-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px dashed #eee;
}

.product-meta .sales {
    font-size: 12px;
    color: #999;
}

.product-meta .rating {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: #f39c12;
}

.add-cart-btn {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    font-weight: 700;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 12px;
    opacity: 0;
    transform: translateY(10px);
    transition: var(--transition);
}

.product-card:hover .add-cart-btn {
    opacity: 1;
    transform: translateY(0);
}

.add-cart-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.load-more {
    text-align: center;
    margin-top: 30px;
}

.load-more-btn {
    padding: 12px 40px;
    border-radius: 8px;
    background: white;
    color: var(--primary);
    font-weight: 600;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.load-more-btn:hover {
    background: var(--primary);
    color: white;
}

/* ==================== 促销活动区域 ==================== */
.promotions-section {
    padding: 40px 0;
    margin: 20px;
}

.promotions-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 20px;
}

.promo-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.promo-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(230,126,34,0.2);
}

.promo-large {
    grid-row: span 2;
}

.promo-image {
    height: 180px;
    position: relative;
    overflow: hidden;
}

.promo-large .promo-image {
    height: 100%;
    min-height: 380px;
}

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

.promo-card:hover .promo-image img {
    transform: scale(1.1);
}

.promo-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.promo-tag {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    background: var(--accent);
    color: white;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.promo-tag.new {
    background: var(--primary);
}

.promo-tag.vip {
    background: var(--primary-light);
}

.promo-tag.group {
    background: #9b59b6;
}

.promo-content h3 {
    font-size: 24px;
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.promo-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 6px;
}

.promo-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.countdown {
    display: flex;
    gap: 8px;
    margin: 12px 0;
}

.time-box {
    display: flex;
    align-items: baseline;
    gap: 2px;
    background: var(--dark);
    color: white;
    padding: 6px 10px;
    border-radius: 4px;
}

.time-num {
    font-size: 18px;
    font-weight: 700;
}

.time-label {
    font-size: 12px;
}

.promo-btn {
    padding: 10px 20px;
    border-radius: 6px;
    background: var(--primary);
    color: white;
    font-weight: 600;
    font-size: 14px;
    margin-top: 10px;
    transition: var(--transition);
}

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

/* ==================== 优惠券区域 ==================== */
.coupon-section {
    background: linear-gradient(135deg, #fff9f0 0%, #fff 100%);
    padding: 35px;
    margin-top: 30px;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(230,126,34,0.1);
    border: 2px solid rgba(230,126,34,0.15);
}

.coupon-section h3 {
    font-size: 24px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
}

.coupon-section h3 i {
    color: var(--primary);
    margin-right: 10px;
}

.coupon-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.coupon-item {
    display: flex;
    border: 2px dashed var(--primary);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    background: white;
}

.coupon-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(230,126,34,0.25);
}

.coupon-left {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: 18px 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 110px;
    position: relative;
}

.coupon-left::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 50%;
}

.coupon-value {
    font-size: 28px;
    font-weight: 800;
}

.coupon-condition {
    font-size: 12px;
    opacity: 0.9;
}

.coupon-right {
    padding: 12px;
    flex: 1;
}

.coupon-right h5 {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.coupon-right p {
    font-size: 12px;
    color: var(--gray);
    margin-bottom: 8px;
}

.coupon-btn {
    padding: 8px 16px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    font-size: 13px;
    font-weight: 700;
    transition: var(--transition);
}

.coupon-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    transform: scale(1.05);
}

.coupon-btn.claimed {
    background: #bbb;
    cursor: not-allowed;
}

/* ==================== 精选推荐 ==================== */
.recommend-section {
    padding: 50px 0;
    margin: 20px;
}

.recommend-section .section-header h2 {
    font-size: 32px;
    font-weight: 800;
}

.recommend-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin: 20px 0;
}

.recommend-tab {
    padding: 10px 24px;
    border-radius: 25px;
    background: white;
    color: var(--gray);
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.recommend-tab:hover,
.recommend-tab.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.recommend-scroll {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.recommend-item {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: var(--transition);
    cursor: pointer;
}

.recommend-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(230,126,34,0.2);
}

.recommend-item img {
    height: 180px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.recommend-info {
    padding: 16px;
}

.recommend-info h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.recommend-price {
    font-size: 20px;
    font-weight: 800;
    color: var(--accent);
}

.about-logo-title {
    width: 200px;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    margin-bottom: 16px;
    display: block;
}

.recommend-price small {
    font-size: 13px;
    color: #999;
    text-decoration: line-through;
    margin-left: 6px;
    font-weight: 500;
}

/* ==================== 关于我们 ==================== */
.about-section {
    background: linear-gradient(180deg, #fff 0%, #fff9f0 100%);
    padding: 70px 0;
    margin: 40px 0 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content h2 {
    font-size: 38px;
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 24px;
    letter-spacing: 3px;
    position: relative;
    padding-bottom: 16px;
}

.about-content h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 2px;
}

.about-content p {
    font-size: 16px;
    color: #555;
    line-height: 2;
    margin-bottom: 20px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(230,126,34,0.15);
}

.feature-item i {
    font-size: 28px;
    color: var(--primary);
    flex-shrink: 0;
}

.feature-item span {
    font-size: 15px;
    font-weight: 700;
    color: var(--dark);
}

.about-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--dark);
    color: white;
    padding: 50px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 16px;
    text-align: center;
}

.footer-logo i {
    font-size: 26px;
}

.footer-logo-img {
    height: 70px;
    width: auto;
    border-radius: 6px;
}

.footer-col p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
    text-align: center;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

.social-links a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 18px;
    color: rgba(255,255,255,0.7);
}

.contact-info i {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 16px;
}

.payment-methods {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: 28px;
}

.payment-methods i {
    color: rgba(255,255,255,0.5);
}

/* ==================== 悬浮购物车 ==================== */
.floating-cart {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 15px rgba(39,174,96,0.4);
    cursor: pointer;
    z-index: 90;
    transition: var(--transition);
}

.floating-cart:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(39,174,96,0.5);
}

.floating-cart-count {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--accent);
    color: white;
    font-size: 12px;
    font-weight: 700;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==================== 回到顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: white;
    color: var(--primary);
    font-size: 18px;
    box-shadow: var(--shadow);
    cursor: pointer;
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary);
    color: white;
}

/* ==================== 购物车侧边栏 ==================== */
.cart-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.cart-sidebar {
    position: fixed;
    top: 0;
    right: -420px;
    width: 420px;
    height: 100vh;
    background: white;
    box-shadow: -5px 0 20px rgba(0,0,0,0.2);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: right 0.3s ease;
}

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

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

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

.cart-header h3 i {
    color: var(--primary);
    margin-right: 8px;
}

.close-cart {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--light);
    font-size: 18px;
    transition: var(--transition);
}

.close-cart:hover {
    background: var(--accent);
    color: white;
}

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

.cart-empty {
    text-align: center;
    padding: 60px 20px;
}

.cart-empty i {
    font-size: 64px;
    color: var(--light);
    margin-bottom: 16px;
}

.cart-empty p {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 20px;
}

.cart-empty button {
    padding: 10px 30px;
    border-radius: 6px;
    background: var(--primary);
    color: white;
    font-weight: 600;
    transition: var(--transition);
}

.cart-empty button:hover {
    background: var(--primary-dark);
}

/* ==================== 购物车项 ==================== */
.cart-item {
    display: flex;
    gap: 12px;
    padding: 16px;
    background: #fafafa;
    border-radius: 12px;
    margin-bottom: 12px;
    position: relative;
}

.cart-item img {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    object-fit: cover;
}

.cart-item-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.cart-item-info h5 {
    font-size: 14px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cart-item-info .item-price {
    font-size: 16px;
    font-weight: 800;
    color: #e74c3c;
    margin-bottom: 8px;
}

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

.qty-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: white;
    border: 1px solid #ddd;
    font-size: 16px;
    font-weight: 700;
    color: #666;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.item-qty span {
    font-size: 15px;
    font-weight: 700;
    min-width: 24px;
    text-align: center;
}

.remove-item {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #fee;
    color: #e74c3c;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.remove-item:hover {
    background: #e74c3c;
    color: white;
}

.cart-footer {
    padding: 20px;
    border-top: 1px solid #eee;
    background: var(--light);
}

.cart-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.cart-total-label {
    font-size: 14px;
    color: var(--gray);
}

.cart-total-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
}

.checkout-btn {
    width: 100%;
    padding: 14px;
    border-radius: 8px;
    background: var(--primary);
    color: white;
    font-size: 16px;
    font-weight: 700;
    transition: var(--transition);
}

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

/* ==================== 快速购买弹窗 ==================== */
.quick-buy-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.quick-buy-modal.open {
    opacity: 1;
    visibility: visible;
}

.quick-buy-content {
    background: white;
    border-radius: var(--radius);
    padding: 30px;
    width: 400px;
    max-width: 90%;
    position: relative;
}

.close-quick-buy {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--light);
    font-size: 18px;
    transition: var(--transition);
}

.close-quick-buy:hover {
    background: var(--accent);
    color: white;
}

.quick-buy-product {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.quick-buy-product img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    object-fit: cover;
}

.quick-buy-product-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.quick-buy-product-info .product-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
}

.quick-buy-product-info .product-price small {
    font-size: 14px;
    font-weight: normal;
    color: var(--gray);
    text-decoration: line-through;
    margin-left: 8px;
}

.quick-buy-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.quick-buy-now,
.quick-buy-cart {
    padding: 14px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
}

.quick-buy-now {
    background: var(--accent);
    color: white;
}

.quick-buy-now:hover {
    background: #c0392b;
}

.quick-buy-cart {
    background: var(--primary);
    color: white;
}

.quick-buy-cart:hover {
    background: var(--primary-dark);
}

/* ==================== Toast提示 ==================== */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--dark);
    color: white;
    padding: 14px 28px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow);
    z-index: 3000;
    opacity: 0;
    transition: var(--transition);
}

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

.toast i {
    font-size: 18px;
    color: var(--primary-light);
}

/* ==================== 弹窗 ==================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal-dialog {
    background: white;
    border-radius: var(--radius);
    width: 500px;
    max-width: 90%;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal.open .modal-dialog {
    transform: scale(1);
}

.modal-dialog.modal-sm {
    width: 400px;
}

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

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

.modal-header h3 i {
    color: var(--primary);
    margin-right: 8px;
}

.close-modal {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--light);
    font-size: 18px;
    transition: var(--transition);
}

.close-modal:hover {
    background: var(--accent);
    color: white;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

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

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

.form-item label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark);
    margin-bottom: 8px;
}

.form-item input,
.form-item select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 14px;
    transition: var(--transition);
}

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

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input {
    width: auto;
}

.checkbox-label span {
    font-size: 14px;
    color: var(--gray);
}

.login-divider {
    text-align: center;
    margin: 20px 0;
    position: relative;
}

.login-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e5e7eb;
}

.login-divider span {
    background: white;
    padding: 0 16px;
    position: relative;
    color: var(--gray);
    font-size: 13px;
}

.login-quick {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.quick-login-btn {
    padding: 12px;
    border-radius: 8px;
    background: var(--light);
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
}

.quick-login-btn:hover {
    background: var(--primary);
    color: white;
}

.quick-login-btn i {
    margin-right: 6px;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

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

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

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

.btn-secondary:hover {
    background: #bdc3c7;
}

/* ==================== 管理员工具栏 ==================== */
.admin-toolbar {
    background: var(--dark);
    color: white;
    padding: 10px 0;
}

.admin-toolbar .container {
    display: flex;
    align-items: center;
    gap: 16px;
}

.admin-toolbar strong {
    color: var(--primary-light);
}

.admin-toolbar-link {
    color: var(--primary-light);
    font-weight: 500;
    margin-left: auto;
}

.admin-toolbar-link:hover {
    color: white;
}

.admin-toolbar button {
    background: transparent;
    color: rgba(255,255,255,0.7);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 13px;
    transition: var(--transition);
}

.admin-toolbar button:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .recommend-scroll {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .categories-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .promotions-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .promo-large {
        grid-column: span 2;
    }
    
    .coupon-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .recommend-scroll {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar-content {
        flex-wrap: nowrap;
        gap: 10px;
    }
    
    .logo img {
        height: 36px;
        max-width: 120px;
    }
    
    .nav-actions {
        gap: 10px;
    }
    
    .user-btn, .cart-btn {
        padding: 6px 10px;
        font-size: 12px;
    }
    
    .user-btn span {
        display: none;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .carousel-container {
        height: 300px;
    }
    
    .carousel-overlay h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .service-bar .container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-item {
        border-right: none;
        border-bottom: 1px solid #eee;
        padding: 16px 0;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .promotions-grid {
        grid-template-columns: 1fr;
    }
    
    .promo-large {
        grid-column: span 1;
    }
    
    .coupon-list {
        grid-template-columns: 1fr;
    }
    
    .recommend-scroll {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .about-content h2 {
        font-size: 28px;
    }
    
    .about-content p {
        font-size: 14px;
    }
    
    .about-logo-title {
        width: 160px;
        height: auto;
    }
    
    .footer {
        padding: 30px 0 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: center;
    }
    
    .footer-col {
        padding: 0 10px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        padding-bottom: 20px;
    }
    
    .footer-col:last-child {
        border-bottom: none;
    }
    
    .footer-logo-img {
        height: 50px;
    }
    
    .footer-logo {
        margin-bottom: 12px;
    }
    
    .footer-bottom {
        padding-top: 20px;
    }
    
    .cart-sidebar {
        width: 100%;
        right: -100%;
    }
    
    .hero-section,
    .categories-section,
    .products-section,
    .promotions-section,
    .recommend-section {
        margin: 12px;
    }
    
    .service-bar {
        margin: 12px;
    }
}