/* ============================
   全局重置与基础变量
   ============================ */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-accent: #06b6d4;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-wechat: #07c160;

    --bg-base: #ffffff;
    --bg-alt: #f8fafc;
    --bg-dark: #0f172a;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --text-white: #ffffff;

    --border-color: #e2e8f0;
    --border-light: #f1f5f9;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 48px rgba(0,0,0,0.15);

    --header-height: 72px;
    --container-max: 1200px;

    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    background: var(--bg-base);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* ============================
   容器
   ============================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================
   头部导航
   ============================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
    font-weight: 800;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.logo-text {
    letter-spacing: 0.5px;
}

.nav {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 15px;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover {
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.06);
}

.nav-link.active {
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.1);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cart-btn {
    position: relative;
    width: 44px;
    height: 44px;
    border: none;
    background: rgba(37, 99, 235, 0.08);
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    transition: var(--transition);
}

.cart-btn:hover {
    background: rgba(37, 99, 235, 0.15);
    transform: scale(1.05);
}

.cart-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 20px;
    height: 20px;
    background: var(--color-danger);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
    border: 2px solid #fff;
}

.cart-badge:empty,
.cart-badge[data-count="0"] {
    display: none;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================
   Hero区域
   ============================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
    background: var(--bg-dark);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(37, 99, 235, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.08) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    filter: blur(40px);
}

.hero-glow::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
    top: 30%;
    left: 30%;
    filter: blur(30px);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 100px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 28px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(135deg, #60a5fa 0%, #22d3ee 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-num {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 8px;
}

/* ============================
   按钮
   ============================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    line-height: 1;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
}

.hero .btn-outline {
    color: #fff;
}

.section .btn-outline {
    background: #fff;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.section .btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-block {
    width: 100%;
}

.btn-buy {
    background: var(--gradient-primary);
    color: #fff;
    padding: 10px 24px;
    font-size: 14px;
    border-radius: 8px;
}

.btn-buy:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
}

.btn-buy-sm {
    background: var(--color-primary);
    color: #fff;
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 8px;
}

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

/* ============================
   通用Section
   ============================ */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================
   服务卡片
   ============================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--color-primary);
    transition: var(--transition);
}

.service-icon svg {
    width: 28px;
    height: 28px;
}

.service-card:hover .service-icon {
    background: var(--gradient-primary);
    color: #fff;
}

.service-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.service-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    margin-bottom: 24px;
}

.service-features li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.service-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    flex-shrink: 0;
}

.service-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
}

.service-price {
    display: flex;
    align-items: baseline;
    gap: 2px;
}

.price-symbol {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
}

.price-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-primary);
}

.price-unit {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-left: 2px;
}

/* ============================
   产品卡片
   ============================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.product-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.product-img {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-img svg {
    width: 80px;
    height: 80px;
    transition: var(--transition);
}

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

.product-info {
    padding: 24px;
}

.product-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.product-spec {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

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

.product-price {
    display: flex;
    align-items: baseline;
    gap: 2px;
}

.product-price .price-num {
    font-size: 24px;
}

/* 分类筛选标签 */
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
}

.category-tab {
    padding: 10px 24px;
    border: 2px solid var(--border-color);
    background: #fff;
    color: var(--text-secondary);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.category-tab:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.category-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* 产品图片容器 */
.product-img-wrap {
    height: 220px;
    position: relative;
    overflow: hidden;
    background: #f8f9fb;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img-real {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 20px;
    transition: transform 0.4s ease;
    box-sizing: border-box;
}

.product-card:hover .product-img-real {
    transform: scale(1.08);
}

/* 产品角标 */
.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: var(--color-danger);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    border-radius: 100px;
    z-index: 2;
    letter-spacing: 0.5px;
}

/* 产品型号 */
.product-model {
    display: inline-block;
    font-size: 12px;
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.08);
    padding: 3px 10px;
    border-radius: 4px;
    margin-bottom: 8px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* 产品筛选隐藏 */
.product-card.hidden {
    display: none;
}

/* ============================
   关于我们
   ============================ */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-text h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-text p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.tag {
    padding: 6px 16px;
    background: rgba(37, 99, 235, 0.06);
    color: var(--color-primary);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid rgba(37, 99, 235, 0.12);
}

.about-scope {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.about-scope h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-light);
}

.scope-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.scope-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}

.scope-icon {
    width: 20px;
    height: 20px;
    background: var(--color-success);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    flex-shrink: 0;
}

/* ============================
   联系我们
   ============================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.contact-card-icon {
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-card-icon svg {
    width: 24px;
    height: 24px;
}

.contact-card-body h4 {
    font-size: 14px;
    color: var(--text-tertiary);
    font-weight: 500;
    margin-bottom: 4px;
}

.contact-card-body p {
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 600;
}

/* ============================
   表单
   ============================ */
.contact-form-wrap {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.form-hint {
    font-size: 14px;
    color: var(--text-tertiary);
    margin-bottom: 28px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.required {
    color: var(--color-danger);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition);
    background: #fff;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

.form-success {
    display: none;
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(16, 185, 129, 0.08);
    color: var(--color-success);
    border-radius: 8px;
    font-size: 14px;
    text-align: center;
}

.form-success.show {
    display: block;
}

/* ============================
   页脚
   ============================ */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.5);
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a,
.footer-links li {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

/* ============================
   购物车侧边栏
   ============================ */
.cart-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 2000;
}

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

.cart-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 420px;
    max-width: 100%;
    height: 100vh;
    background: #fff;
    z-index: 2001;
    transform: translateX(100%);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.15);
}

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

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

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

.cart-close {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-alt);
    border-radius: 50%;
    font-size: 22px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.cart-close:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

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

.cart-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-tertiary);
    gap: 16px;
}

.cart-empty p {
    font-size: 15px;
}

.cart-item {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-light);
}

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

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.cart-item-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
}

.cart-item-ctrl {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
}

.qty-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--border-color);
    background: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.qty-num {
    font-size: 14px;
    font-weight: 600;
    min-width: 24px;
    text-align: center;
}

.cart-item-remove {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition);
}

.cart-item-remove:hover {
    color: var(--color-danger);
}

.cart-footer {
    padding: 24px;
    border-top: 1px solid var(--border-color);
}

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

.cart-total span:first-child {
    font-size: 15px;
    color: var(--text-secondary);
}

.cart-total-price {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-primary);
}

/* ============================
   弹窗
   ============================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: #fff;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.show .modal {
    transform: scale(1);
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border-color);
}

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

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-alt);
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.modal-body {
    padding: 28px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    padding: 20px 28px;
    border-top: 1px solid var(--border-color);
}

.modal-footer .btn {
    flex: 1;
}

/* 订单项列表 */
.order-items {
    background: var(--bg-alt);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
}

.order-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
}

.order-item-name {
    color: var(--text-secondary);
    flex: 1;
}

.order-item-qty {
    color: var(--text-tertiary);
    margin: 0 12px;
}

.order-item-price {
    font-weight: 600;
    color: var(--text-primary);
}

/* 订单汇总 */
.order-summary {
    margin-bottom: 20px;
}

.order-summary-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.order-summary-total {
    padding-top: 12px;
    border-top: 1px solid var(--border-light);
    margin-top: 4px;
}

.order-summary-total span:first-child {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.order-total-price {
    font-size: 24px;
    font-weight: 800;
    color: var(--color-primary);
}

/* 支付方式 */
.pay-method {
    margin-top: 8px;
}

.pay-method-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.pay-method-selected {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(7, 193, 96, 0.06);
    border: 1px solid rgba(7, 193, 96, 0.2);
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

/* 支付处理中 */
.paying-content {
    text-align: center;
    padding: 20px;
}

.paying-spinner {
    width: 56px;
    height: 56px;
    border: 4px solid var(--border-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    margin: 0 auto 24px;
    animation: spin 0.8s linear infinite;
}

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

.paying-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.paying-content p {
    font-size: 14px;
    color: var(--text-tertiary);
}

/* ============================
   Toast提示
   ============================ */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    background: var(--text-primary);
    color: #fff;
    padding: 12px 28px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    z-index: 4000;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    white-space: nowrap;
}

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

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

.toast.error {
    background: var(--color-danger);
}

/* ============================
   产品双按钮布局
   ============================ */
.product-actions {
    display: flex;
    gap: 10px;
    margin-top: 14px;
}

.product-actions .btn {
    flex: 1;
    padding: 10px 14px;
    font-size: 14px;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-weight: 600;
}

.btn-cart-sm {
    background: #fff;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary) !important;
}

.btn-cart-sm:hover {
    background: rgba(37, 99, 235, 0.06);
}

/* ============================
   收货地址表单
   ============================ */
.address-section {
    background: var(--bg-alt);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border-light);
}

.address-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-light);
}

.address-section-title svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

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

.address-section .form-group:last-child {
    margin-bottom: 0;
}

/* 省/市并排布局 */
.form-row {
    display: flex;
    gap: 12px;
}

.form-group-half {
    flex: 1;
}

/* 下拉选择框样式 */
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-primary);
    background: #fff;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
    transition: var(--transition);
}

.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group select:invalid {
    color: var(--text-tertiary);
}

/* ============================
   快递查询
   ============================ */
.tracking {
    background: var(--bg-alt);
}

.tracking-wrap {
    max-width: 860px;
    margin: 0 auto;
}

.tracking-search {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-sm);
}

.tracking-form {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 20px;
    align-items: end;
}

.tracking-form .form-group {
    margin-bottom: 0;
}

.tracking-btn {
    height: 48px;
    padding: 0 32px;
    white-space: nowrap;
}

/* 查询结果区域 */
.tracking-results {
    min-height: 200px;
}

.tracking-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
    color: var(--text-tertiary);
    text-align: center;
    gap: 16px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.tracking-empty p {
    font-size: 15px;
}

/* 单个订单物流卡片 */
.track-order-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.track-order-card:hover {
    box-shadow: var(--shadow-md);
}

.track-order-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px;
    background: linear-gradient(135deg, #f0f7ff 0%, #f8f9fb 100%);
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
    gap: 12px;
}

.track-order-no {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.track-order-no span {
    color: var(--text-tertiary);
    font-weight: 500;
    font-size: 13px;
}

.track-status {
    padding: 5px 14px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
}

.track-status.delivered {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.track-status.shipping {
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
}

.track-status.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

/* 订单商品概要 */
.track-order-goods {
    padding: 20px 28px;
    border-bottom: 1px solid var(--border-light);
}

.track-goods-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-tertiary);
    margin-bottom: 10px;
}

.track-goods-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.track-goods-item {
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--bg-alt);
    padding: 5px 12px;
    border-radius: 6px;
}

.track-order-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    padding: 16px 28px;
    border-bottom: 1px solid var(--border-light);
    font-size: 13px;
    color: var(--text-secondary);
}

.track-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.track-meta-item strong {
    color: var(--text-tertiary);
    font-weight: 500;
}

/* 未支付提示 */
.track-unpaid-tip {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 28px;
    padding: 14px 18px;
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: #92400e;
}

.track-unpaid-actions {
    margin: 12px 28px 0;
}

.track-continue-pay-btn {
    width: 100%;
    padding: 12px 0;
    background: linear-gradient(135deg, #07c160, #06ad56);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.track-continue-pay-btn:hover {
    opacity: 0.9;
}

/* 物流时间线 */
.track-timeline {
    padding: 28px;
    position: relative;
}

.track-timeline-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.track-timeline-title svg {
    color: var(--color-primary);
}

.track-timeline-list {
    position: relative;
    padding-left: 32px;
}

.track-timeline-list::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border-color);
}

.track-node {
    position: relative;
    padding-bottom: 28px;
}

.track-node:last-child {
    padding-bottom: 0;
}

.track-node::before {
    content: '';
    position: absolute;
    left: -28px;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--border-color);
    z-index: 1;
    transition: var(--transition);
}

.track-node.active::before {
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.track-node.delivered::before {
    background: var(--color-success);
    border-color: var(--color-success);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
}

.track-node-content {
    padding-left: 4px;
}

.track-node-time {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
    font-weight: 500;
}

.track-node-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.track-node.active .track-node-desc {
    color: var(--text-primary);
    font-weight: 600;
}

.track-node.delivered .track-node-desc {
    color: var(--color-success);
    font-weight: 600;
}

/* 查询中loading */
.tracking-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
    gap: 16px;
    color: var(--text-tertiary);
}

.tracking-loading .paying-spinner {
    margin: 0;
}

.tracking-loading p {
    font-size: 14px;
}

/* 无结果 */
.tracking-none {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
    text-align: center;
    gap: 12px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.tracking-none svg {
    color: var(--text-tertiary);
}

.tracking-none p {
    font-size: 15px;
    color: var(--text-secondary);
}

.tracking-none .tracking-none-hint {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* ============================
   响应式
   ============================ */
@media (max-width: 1024px) {
    .services-grid,
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

    .hero-title {
        font-size: 44px;
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

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

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

    .hero-actions {
        flex-direction: column;
        width: 100%;
        max-width: 280px;
        margin: 0 auto 48px;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-num {
        font-size: 28px;
    }

    .section {
        padding: 64px 0;
    }

    .section-title {
        font-size: 28px;
    }

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

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

    .cart-sidebar {
        width: 100%;
    }

    .modal {
        max-width: 100%;
    }

    .container {
        padding: 0 16px;
    }

    .contact-form-wrap {
        padding: 24px;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .product-actions {
        flex-direction: column;
        gap: 8px;
    }

    .address-section {
        padding: 16px;
    }

    .category-tabs {
        gap: 8px;
        margin-bottom: 28px;
    }

    .category-tab {
        padding: 8px 16px;
        font-size: 13px;
    }

    .tracking-form {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .tracking-btn {
        width: 100%;
    }

    .tracking-search {
        padding: 24px 20px;
    }

    .track-order-header,
    .track-order-goods,
    .track-order-meta,
    .track-timeline {
        padding-left: 20px;
        padding-right: 20px;
    }

    .track-order-meta {
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 26px;
    }

    .hero-stats {
        gap: 16px;
    }

    .stat-num {
        font-size: 24px;
    }

    .service-card,
    .contact-form-wrap {
        padding: 24px 20px;
    }

    .section-title {
        font-size: 24px;
    }
}