/* ============================================
   熊猫牧场 - 餐饮食材供应链平台
   全局样式
   ============================================ */

/* CSS 变量 */
:root {
    --primary: #FFC107;
    --primary-dark: #FFA000;
    --primary-darker: #F57F17;
    --primary-light: #FFECB3;
    --primary-lighter: #FFF8E1;
    --accent: #4CAF50;
    --accent-dark: #388E3C;
    --dark: #1a1a1a;
    --gray-900: #212121;
    --gray-800: #333333;
    --gray-700: #424242;
    --gray-600: #616161;
    --gray-500: #757575;
    --gray-400: #9E9E9E;
    --gray-300: #E0E0E0;
    --gray-200: #EEEEEE;
    --gray-100: #F5F5F5;
    --gray-50: #FAFAFA;
    --white: #FFFFFF;
    --bg: #f8f9fa;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--gray-900);
    background: var(--white);
    line-height: 1.7;
    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(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 30px rgba(0,0,0,0.1);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo-img {
    height: 46px;
    width: auto;
    border-radius: 50%;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-size: 20px;
    font-weight: 900;
    color: var(--dark);
    line-height: 1.2;
}

.logo-slogan {
    font-size: 10px;
    font-weight: 500;
    color: var(--gray-500);
    letter-spacing: 1px;
    line-height: 1.2;
}

.nav-menu {
    display: flex;
    gap: 4px;
    align-items: center;
}

.nav-link {
    padding: 8px 14px;
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-darker);
    background: var(--primary-lighter);
}

.nav-link.active {
    color: var(--primary-darker);
    font-weight: 700;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-900);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn .arrow {
    transition: transform 0.3s;
}

.btn:hover .arrow {
    transform: translateX(4px);
}

.btn-primary {
    background: var(--primary);
    color: var(--gray-900);
    box-shadow: 0 4px 14px rgba(255, 193, 7, 0.35);
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 6px 20px rgba(255, 193, 7, 0.45);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-darker);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--gray-900);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 17px;
}

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

/* ============================================
   Hero 区域
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #FFF8E1 0%, #ffffff 50%, #E8F5E9 100%);
    z-index: -2;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 5%;
    right: -8%;
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, rgba(255,193,7,0.12) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: 5%;
    left: -8%;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(76,175,80,0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding-top: 40px;
    padding-bottom: 80px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,193,7,0.4);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-darker);
    margin-bottom: 24px;
    animation: fadeInDown 0.8s ease;
}

.hero-title {
    font-size: 3.6rem;
    font-weight: 900;
    line-height: 1.2;
    color: var(--dark);
    margin-bottom: 24px;
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 28px;
    max-width: 540px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-tag {
    padding: 8px 16px;
    background: rgba(255,255,255,0.9);
    border: 1px solid var(--gray-200);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.hero-tag:hover {
    border-color: var(--primary);
    color: var(--primary-darker);
    transform: translateY(-2px);
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-notice {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: rgba(255,255,255,0.9);
    border-radius: 100px;
    border: 1px solid rgba(255,193,7,0.3);
    box-shadow: var(--shadow-sm);
    animation: fadeInUp 0.8s ease 0.5s both;
}

.notice-label {
    padding: 4px 10px;
    background: var(--primary);
    color: var(--gray-900);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
}

.notice-text {
    font-size: 13px;
    color: var(--gray-700);
    font-weight: 500;
}

/* Hero 视觉 */
.hero-visual {
    position: relative;
    height: 520px;
    animation: fadeIn 1s ease 0.3s both;
}

.hero-circle {
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    flex-direction: column;
}

.main-circle {
    width: 340px;
    height: 340px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    box-shadow: 0 25px 70px rgba(255,193,7,0.35);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float 4s ease-in-out infinite;
    overflow: hidden;
}

.hero-logo {
    width: 180px;
    height: 180px;
    object-fit: contain;
    margin-bottom: 8px;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.1));
}

.circle-label {
    font-size: 22px;
    font-weight: 900;
    color: var(--gray-900);
    letter-spacing: 3px;
}

.small-circle {
    width: 76px;
    height: 76px;
    background: white;
    box-shadow: var(--shadow-lg);
    font-size: 34px;
}

.small-circle.c1 { top: 5%; left: 12%; animation: floatSmall 3s ease-in-out infinite; }
.small-circle.c2 { top: 10%; right: 8%; animation: floatSmall 3.5s ease-in-out infinite 0.5s; }
.small-circle.c3 { top: 40%; left: 0%; animation: floatSmall 3.2s ease-in-out infinite 0.3s; }
.small-circle.c4 { bottom: 12%; left: 8%; animation: floatSmall 3.8s ease-in-out infinite 0.7s; }
.small-circle.c5 { bottom: 18%; right: 12%; animation: floatSmall 3.4s ease-in-out infinite 0.2s; }
.small-circle.c6 { top: 42%; right: 0%; animation: floatSmall 3.6s ease-in-out infinite 0.9s; }

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    z-index: 1;
}

.hero-wave svg {
    width: 100%;
    height: 80px;
    display: block;
}

/* ============================================
   数据统计
   ============================================ */
.stats-section {
    padding: 60px 0;
    background: var(--bg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-item {
    text-align: center;
    padding: 32px 16px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid transparent;
}

.stat-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--primary-darker);
    line-height: 1.2;
    margin-bottom: 8px;
}

.stat-suffix {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-600);
}

.stat-label {
    font-size: 15px;
    color: var(--gray-600);
    font-weight: 500;
}

/* ============================================
   通用 Section Header
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-tag {
    display: inline-block;
    padding: 6px 18px;
    background: var(--primary-lighter);
    color: var(--primary-darker);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-600);
}

/* ============================================
   产品分类 Categories Section
   ============================================ */
.categories-section {
    padding: 80px 0;
    background: var(--white);
}

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

.category-card {
    background: white;
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--gray-100);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.category-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--cat-color, var(--primary));
    transform: translateY(-6px);
}

.category-card:hover .category-icon {
    transform: scale(1.1) rotate(5deg);
    background: var(--cat-color, var(--primary));
    color: white;
}

.category-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-lighter);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 16px;
    transition: var(--transition);
}

.category-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 6px;
}

.category-card p {
    font-size: 12px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ============================================
   关于我们
   ============================================ */
.about-section {
    padding: 80px 0;
    background: var(--bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-heading {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 20px;
}

.about-text p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-highlights {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.highlight-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: white;
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
    transition: var(--transition);
}

.highlight-item:hover {
    background: var(--primary-lighter);
    transform: translateX(4px);
}

.highlight-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.highlight-text h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.highlight-text p {
    font-size: 14px;
    color: var(--gray-600);
    margin: 0;
}

/* 关于我们卡片 */
.about-visual {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: 90px;
}

.about-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 24px;
    padding: 36px;
    color: var(--gray-900);
    box-shadow: 0 20px 50px rgba(255,193,7,0.25);
}

.about-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    margin-bottom: 24px;
}

.card-avatar-img {
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.3);
    border-radius: 50%;
    padding: 4px;
    object-fit: contain;
    flex-shrink: 0;
}

.about-card-header h4 {
    font-size: 20px;
    font-weight: 900;
    margin-bottom: 4px;
}

.about-card-header p {
    font-size: 14px;
    opacity: 0.7;
    margin: 0;
}

.about-card-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

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

.card-stat-num {
    display: block;
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 4px;
}

.card-stat-label {
    font-size: 13px;
    opacity: 0.8;
}

.about-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.about-card-tags span {
    padding: 6px 14px;
    background: rgba(255,255,255,0.3);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
}

/* 小程序卡片 */
.mini-program-card {
    background: white;
    border-radius: 24px;
    padding: 28px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 24px;
    border: 2px solid var(--gray-100);
}

.mini-program-info {
    flex: 1;
}

.mini-program-info h4 {
    font-size: 18px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.mini-program-info p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
    margin: 0;
}

.mini-program-qr {
    width: 110px;
    height: 110px;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.mini-program-qr img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ============================================
   产品中心
   ============================================ */
.products-section {
    padding: 80px 0;
    background: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.product-card {
    background: white;
    border-radius: var(--radius);
    padding: 28px 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 2px solid var(--gray-100);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--card-color, var(--primary));
    transform: scaleX(0);
    transition: transform 0.3s;
    transform-origin: left;
}

.product-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
    border-color: var(--card-color, var(--primary));
}

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

.product-icon {
    font-size: 42px;
    margin-bottom: 16px;
}

.product-name {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 10px;
}

.product-desc {
    font-size: 13px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
}

.product-list {
    margin-bottom: 20px;
}

.product-list li {
    font-size: 13px;
    color: var(--gray-700);
    padding: 5px 0;
    padding-left: 22px;
    position: relative;
}

.product-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--card-color, var(--primary));
    font-weight: 700;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--card-color, var(--primary-darker));
    transition: var(--transition);
    margin-top: auto;
}

.product-link:hover {
    gap: 12px;
}

/* ============================================
   核心优势
   ============================================ */
.advantages-section {
    padding: 80px 0;
    background: var(--bg);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.advantage-card {
    text-align: center;
    padding: 40px 24px;
    border-radius: var(--radius);
    background: white;
    transition: var(--transition);
    border: 2px solid transparent;
    box-shadow: var(--shadow-sm);
}

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

.advantage-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
    transition: transform 0.3s;
}

.advantage-card:hover .advantage-icon {
    transform: scale(1.15) rotate(5deg);
}

.advantage-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 12px;
}

.advantage-desc {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.8;
}

.advantage-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(255,193,7,0.25);
}

.adv-stat {
    text-align: center;
    color: var(--gray-900);
}

.adv-stat-number {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 8px;
}

.adv-stat-number span {
    font-size: 1.5rem;
    font-weight: 700;
}

.adv-stat-label {
    font-size: 15px;
    font-weight: 600;
    opacity: 0.8;
}

/* ============================================
   合作伙伴
   ============================================ */
.partners-section {
    padding: 80px 0;
    background: var(--white);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.partner-card {
    background: white;
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 2px solid var(--gray-100);
}

.partner-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
    transform: translateY(-4px);
}

.partner-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.partner-info h4 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.partner-info p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
}

/* 合作品牌 */
.brand-partners {
    background: var(--bg);
    border-radius: 24px;
    padding: 40px;
}

.brand-partners-title {
    text-align: center;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 28px;
}

.brand-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.brand-logo {
    padding: 14px 28px;
    background: white;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-700);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 2px solid transparent;
}

.brand-logo:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* ============================================
   CTA 区域
   ============================================ */
.cta-section {
    padding: 60px 0;
    background: var(--bg);
}

.cta-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 24px;
    padding: 48px 56px;
    color: var(--gray-900);
    box-shadow: 0 20px 50px rgba(255,193,7,0.3);
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '🐼';
    position: absolute;
    right: 40px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 180px;
    opacity: 0.08;
}

.cta-title {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 8px;
}

.cta-desc {
    font-size: 15px;
    font-weight: 500;
    opacity: 0.85;
}

.cta-box .btn-primary {
    background: var(--gray-900);
    color: white;
    box-shadow: 0 4px 14px rgba(0,0,0,0.2);
    flex-shrink: 0;
    z-index: 1;
}

.cta-box .btn-primary:hover {
    background: var(--gray-800);
}

/* ============================================
   联系我们
   ============================================ */
.contact-section {
    padding: 80px 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 22px;
    background: var(--bg);
    border-radius: var(--radius);
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--primary-lighter);
}

.contact-item.mini-program-contact {
    align-items: center;
    flex-wrap: wrap;
}

.contact-icon {
    font-size: 26px;
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.contact-item h4 {
    font-size: 15px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 15px;
    color: var(--gray-600);
}

.contact-qr {
    width: 90px;
    height: 90px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-left: auto;
}

.contact-qr img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 联系表单 */
.contact-form-wrapper {
    background: var(--bg);
    border-radius: 24px;
    padding: 40px;
}

.form-title {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 4px;
}

.form-subtitle {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 28px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: 10px;
    font-size: 15px;
    font-family: inherit;
    color: var(--gray-900);
    background: white;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255,193,7,0.15);
}

.form-group textarea {
    resize: vertical;
}

.form-success {
    display: none;
    text-align: center;
    padding: 16px;
    margin-top: 16px;
    background: var(--primary-lighter);
    color: var(--primary-darker);
    border-radius: 10px;
    font-weight: 700;
    font-size: 15px;
}

.form-success.show {
    display: block;
    animation: fadeInUp 0.4s ease;
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: var(--dark);
    color: var(--gray-400);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo-img {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: contain;
}

.footer-logo-name {
    display: block;
    font-size: 20px;
    font-weight: 900;
    color: white;
    line-height: 1.2;
}

.footer-logo-slogan {
    display: block;
    font-size: 11px;
    color: var(--gray-500);
    letter-spacing: 1px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    max-width: 320px;
}

.footer-col h4 {
    color: white;
    font-size: 16px;
    font-weight: 800;
    margin-bottom: 16px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul li a {
    font-size: 14px;
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--primary);
    padding-left: 4px;
}

.footer-contact li {
    font-size: 14px;
    color: var(--gray-400);
    line-height: 2;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--gray-500);
}

/* ============================================
   回到顶部
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--gray-900);
    border: none;
    border-radius: 50%;
    font-size: 22px;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* ============================================
   动画
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

@keyframes float {
    0%, 100% { transform: translate(-50%, -50%) translateY(0); }
    50% { transform: translate(-50%, -50%) translateY(-20px); }
}

@keyframes floatSmall {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* 滚动进入动画 */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

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

@media (max-width: 1024px) {
    .hero-title { font-size: 3rem; }
    .section-title { font-size: 2rem; }
    
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        transition: transform 0.3s;
        align-items: stretch;
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .nav-link {
        text-align: center;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title { font-size: 2.4rem; }
    .hero-desc { margin: 0 auto 28px; }
    .hero-tags { justify-content: center; }
    .hero-actions { justify-content: center; flex-wrap: wrap; }
    .hero-notice { margin: 0 auto; }
    
    .hero-visual {
        height: 380px;
    }
    
    .main-circle {
        width: 260px;
        height: 260px;
    }
    
    .hero-logo {
        width: 140px;
        height: 140px;
    }
    
    .small-circle {
        width: 56px;
        height: 56px;
        font-size: 28px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-number { font-size: 1.8rem; }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-visual {
        position: static;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .advantage-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 28px;
    }
    
    .adv-stat-number { font-size: 2.2rem; }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-box {
        flex-direction: column;
        text-align: center;
        padding: 36px 28px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .mini-program-card {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title { font-size: 1.7rem; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-title { font-size: 1.9rem; }
    .stat-number { font-size: 1.6rem; }
    .advantage-stats { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .product-card { padding: 24px; }
    .categories-grid { grid-template-columns: repeat(2, 1fr); }
    .category-card { padding: 20px 12px; }
    .category-icon { width: 52px; height: 52px; font-size: 24px; }
    .category-card h3 { font-size: 14px; }
    .category-card p { display: none; }
}