/* ============================================================
   弘康健康官网 - 样式表
   设计方向：现代中式简约，健康绿 + 暖白，端庄可信
   ============================================================ */

/* --- CSS 变量 --- */
:root {
    /* 主色调 - 健康绿 */
    --primary: #2D8B6E;
    --primary-light: #3BA884;
    --primary-dark: #1F6B52;
    --primary-bg: #F0F8F4;

    /* 辅助色 */
    --accent: #C8963E;
    --accent-light: #E8C876;

    /* 中性色 - 融合 Notion 暖灰 + Airbnb 近黑 */
    --text-primary: #222222;
    --text-secondary: #615d59;
    --text-muted: #6a6a6a;
    --bg-white: #FFFFFF;
    --bg-warm: #F6F5F4;
    --bg-gray: #F5F5F0;
    --border: rgba(0, 0, 0, 0.08);
    --border-light: rgba(0, 0, 0, 0.06);

    /* 阴影 - Notion 多层柔和阴影体系 */
    --shadow-card: rgba(0,0,0,0.03) 0px 0px 0px 1px, rgba(0,0,0,0.04) 0px 2px 8px, rgba(0,0,0,0.05) 0px 6px 16px;
    --shadow-hover: rgba(0,0,0,0.04) 0px 0px 0px 1px, rgba(0,0,0,0.06) 0px 4px 12px, rgba(0,0,0,0.08) 0px 10px 28px, rgba(0,0,0,0.05) 0px 20px 48px;

    /* 字体 */
    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Noto Serif SC', 'SimSun', 'STSong', serif;

    /* 间距 */
    --container: 1200px;
    --section-padding: 100px;
    --header-height: 72px;
}

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

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

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-white);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- 导航栏 --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    z-index: 1000;
    transition: box-shadow 0.3s ease, background 0.3s ease;
}

.header.scrolled {
    box-shadow: rgba(0, 0, 0, 0.04) 0px 2px 8px, rgba(0, 0, 0, 0.03) 0px 0px 0px 1px;
    background: rgba(255, 255, 255, 0.95);
}

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

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

.logo-img {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    object-fit: contain;
}

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

.logo-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
    font-family: var(--font-serif);
    letter-spacing: -0.01em;
}

.logo-subtitle {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    font-weight: 400;
}

.nav-list {
    display: flex;
    gap: 2px;
}

.nav-link {
    display: inline-block;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 10px;
    transition: all 0.25s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-dark);
    background: rgba(45, 139, 110, 0.06);
}

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

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* --- Hero 主视觉 --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--header-height);
    overflow: hidden;
    background: linear-gradient(170deg, #F6F5F4 0%, #F0F8F4 40%, #E8F4ED 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-pattern {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(45, 139, 110, 0.06) 0%, transparent 70%);
}

.hero-pattern::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(200, 150, 62, 0.04) 0%, transparent 70%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    color: var(--primary-dark);
    border-radius: 9999px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.04em;
    border: 1px solid rgba(45, 139, 110, 0.12);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.title-line {
    display: block;
}

.title-line.accent {
    color: var(--primary);
}

.hero-desc {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
    border: none;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: rgba(45, 139, 110, 0.2) 0px 4px 16px;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: rgba(45, 139, 110, 0.3) 0px 8px 28px;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.7);
    color: var(--primary-dark);
    border: 1px solid rgba(45, 139, 110, 0.2);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: rgba(45, 139, 110, 0.06);
    transform: translateY(-2px);
    border-color: var(--primary);
}

.hero-visual {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 18px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.hero-card:hover {
    transform: translateX(8px);
    border-color: rgba(45, 139, 110, 0.2);
    box-shadow: rgba(0,0,0,0.04) 0px 4px 12px, rgba(0,0,0,0.03) 0px 8px 24px;
    background: rgba(255, 255, 255, 0.9);
}

.hero-card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(45, 139, 110, 0.08);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hero-card-icon svg {
    width: 32px;
    height: 32px;
}

.hero-card h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    letter-spacing: -0.01em;
}

.hero-card p {
    font-size: 13px;
    color: var(--text-muted);
}

/* --- 通用 Section --- */
.section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 5px 18px;
    background: rgba(45, 139, 110, 0.07);
    color: var(--primary-dark);
    border-radius: 9999px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 38px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.75;
}

/* --- 企业简介 --- */
.about {
    background: var(--bg-white);
}

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

/* --- 企业简介图片卡片 --- */
.about-image {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.about-image-card {
    position: relative;
    width: 100%;
    max-width: 480px;
    border-radius: 24px;
    overflow: hidden;
    background: #ffffff;
    box-shadow:
        rgba(0, 0, 0, 0.03) 0px 0px 0px 1px,
        rgba(0, 0, 0, 0.04) 0px 2px 8px,
        rgba(0, 0, 0, 0.06) 0px 6px 20px,
        rgba(0, 0, 0, 0.04) 0px 16px 48px;
    transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.about-image-card:hover {
    transform: translateY(-4px);
    box-shadow:
        rgba(0, 0, 0, 0.04) 0px 0px 0px 1px,
        rgba(0, 0, 0, 0.06) 0px 4px 12px,
        rgba(0, 0, 0, 0.08) 0px 10px 28px,
        rgba(0, 0, 0, 0.06) 0px 20px 56px;
}

.about-hero-image {
    width: 100%;
    height: auto;
    aspect-ratio: 4/3;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.about-image-card:hover .about-hero-image {
    transform: scale(1.03);
}

.about-image-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 9999px;
    letter-spacing: 0.04em;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.about-image-caption {
    position: absolute;
    bottom: 16px;
    left: 16px;
    right: 16px;
}

.about-image-caption span {
    display: inline-block;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 500;
    padding: 5px 14px;
    border-radius: 9999px;
    letter-spacing: 0.02em;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.about-lead {
    font-size: 18px;
    line-height: 1.95;
    color: var(--text-primary);
    margin-bottom: 18px;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.about-content p {
    font-size: 15px;
    line-height: 1.95;
    color: var(--text-secondary);
    margin-bottom: 14px;
}

.about-content strong {
    color: var(--primary-dark);
    font-weight: 600;
}

.highlight {
    color: var(--primary-dark);
    font-weight: 600;
    background: rgba(45, 139, 110, 0.06);
    padding: 2px 8px;
    border-radius: 6px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 36px;
    padding-top: 32px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.stat-item {
    text-align: center;
    background: #F8FAF5;
    border: 1px solid rgba(45, 139, 110, 0.08);
    border-radius: 16px;
    padding: 20px 14px;
    transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.stat-item:hover {
    background: #ffffff;
    border-color: rgba(45, 139, 110, 0.2);
    box-shadow:
        rgba(0, 0, 0, 0.02) 0px 2px 6px,
        rgba(0, 0, 0, 0.04) 0px 6px 16px;
    transform: translateY(-2px);
}

.stat-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
}

/* --- 健立方品牌 --- */
.brand {
    background: var(--bg-warm);
}

.brand-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.brand-card {
    background: var(--bg-white);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 20px;
    padding: 40px 28px;
    text-align: center;
    transition: all 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
    position: relative;
    overflow: hidden;
}

.brand-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

.brand-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(45, 139, 110, 0.15);
}

.brand-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    background: rgba(45, 139, 110, 0.07);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.brand-icon svg {
    width: 40px;
    height: 40px;
}

.brand-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.brand-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
}

/* --- 核心产品 --- */
.product {
    background: linear-gradient(180deg, var(--bg-white) 0%, #F8FAF5 50%, var(--bg-white) 100%);
    position: relative;
    overflow: hidden;
}

.product::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -80px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(45, 139, 110, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.product::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -60px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(200, 150, 62, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.product-image-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* --- Notion+Airbnb 融合产品图卡片 --- */
.product-image-card {
    position: relative;
    width: 100%;
    max-width: 420px;
    border-radius: 24px;
    overflow: hidden;
    background: #ffffff;
    box-shadow:
        rgba(0, 0, 0, 0.03) 0px 0px 0px 1px,
        rgba(0, 0, 0, 0.04) 0px 2px 8px,
        rgba(0, 0, 0, 0.06) 0px 6px 20px,
        rgba(0, 0, 0, 0.04) 0px 16px 48px;
    transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.product-image-card:hover {
    transform: translateY(-4px);
    box-shadow:
        rgba(0, 0, 0, 0.04) 0px 0px 0px 1px,
        rgba(0, 0, 0, 0.06) 0px 4px 12px,
        rgba(0, 0, 0, 0.08) 0px 10px 28px,
        rgba(0, 0, 0, 0.06) 0px 20px 56px;
}

.product-hero-image {
    width: 100%;
    height: auto;
    aspect-ratio: 4/5;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.product-image-card:hover .product-hero-image {
    transform: scale(1.03);
}

.product-image-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 9999px;
    letter-spacing: 0.04em;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.product-image-overlay {
    position: absolute;
    bottom: 16px;
    left: 16px;
    right: 16px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.overlay-tag {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    color: var(--text-primary);
    font-size: 11px;
    font-weight: 500;
    padding: 5px 12px;
    border-radius: 9999px;
    letter-spacing: 0.02em;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* --- 产品信息区优化 --- */
.product-info h3 {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.product-info > p {
    font-size: 16px;
    color: #615d59;
    line-height: 1.85;
    margin-bottom: 32px;
}

.product-features {
    display: grid;
    gap: 18px;
}

.product-features li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 14px 16px;
    border-radius: 14px;
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.product-features li:hover {
    border-color: rgba(45, 139, 110, 0.2);
    background: #F8FAF5;
    box-shadow:
        rgba(0, 0, 0, 0.02) 0px 2px 6px,
        rgba(0, 0, 0, 0.03) 0px 4px 12px;
    transform: translateX(4px);
}

.feature-icon {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: var(--primary-bg);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
}

.product-features li strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: #222222;
    margin-bottom: 3px;
    letter-spacing: -0.01em;
}

.product-features li span {
    font-size: 13px;
    color: #6a6a6a;
    line-height: 1.6;
}

/* --- 服务体系 --- */
.service {
    background: var(--bg-warm);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg-white);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.service-card:hover {
    border-color: rgba(45, 139, 110, 0.2);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.service-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.service-num {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.25;
    line-height: 1;
}

.service-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.service-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    padding-left: 48px;
}

/* --- 企业文化 --- */
.culture {
    background: var(--bg-white);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.culture-card {
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.culture-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.culture-card.primary {
    grid-column: 1 / -1;
}

.culture-card.primary .culture-card-inner {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff;
}

.culture-card.primary .culture-label {
    color: rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.18);
}

.culture-card.primary h3 {
    color: #fff;
    font-size: 28px;
}

.culture-card.primary p {
    color: rgba(255, 255, 255, 0.85);
}

.culture-card-inner {
    background: var(--bg-warm);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 20px;
    padding: 36px;
    height: 100%;
}

.culture-label {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(45, 139, 110, 0.08);
    color: var(--primary-dark);
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}

.culture-card h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.6;
}

.culture-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
}

/* --- 联系我们 --- */
.contact {
    background: var(--bg-warm);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 40px;
    align-items: start;
}

.contact-info {
    display: grid;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(45, 139, 110, 0.07);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 14px;
    color: var(--text-muted);
}

.contact-qr {
    text-align: center;
    background: var(--bg-white);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 20px;
    padding: 32px;
    box-shadow: var(--shadow-card);
}

.qr-placeholder {
    width: 160px;
    height: 160px;
    margin: 0 auto 16px;
    color: var(--primary);
    opacity: 0.6;
}

.qr-illustration {
    width: 100%;
    height: 100%;
}

.qr-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 12px;
}

.contact-qr p {
    font-size: 13px;
    color: var(--text-muted);
}

/* --- 页脚 --- */
.footer {
    background: #1a1a1a;
    color: rgba(255, 255, 255, 0.65);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    font-family: var(--font-serif);
}

.footer-logo-img {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    object-fit: contain;
}

.footer-brand p {
    font-size: 13px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.5);
}

.footer-links h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-links ul {
    display: grid;
    gap: 10px;
}

.footer-links a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
    transition: color 0.25s ease;
}

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

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
    margin-bottom: 8px;
}

.footer-beian {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
}

.footer-beian a {
    color: rgba(255, 255, 255, 0.3);
    transition: color 0.25s ease;
}

.footer-beian a:hover {
    color: rgba(255, 255, 255, 0.6);
}

.beian-divider {
    margin: 0 8px;
    opacity: 0.3;
}

/* --- 响应式 --- */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-visual {
        flex-direction: row;
        justify-content: center;
    }

    .hero-card {
        flex: 1;
        max-width: 220px;
        flex-direction: column;
        text-align: center;
    }

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

    .product-showcase {
        grid-template-columns: 1fr;
    }

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

    .brand-showcase {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
        --header-height: 64px;
    }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-light);
        padding: 16px 24px;
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.3s ease;
        pointer-events: none;
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-list {
        flex-direction: column;
        gap: 8px;
    }

    .nav-link {
        width: 100%;
        padding: 12px 16px;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-visual {
        flex-direction: column;
    }

    .hero-card {
        max-width: none;
        flex-direction: row;
        text-align: left;
    }

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

    .about-stats {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .service-grid,
    .culture-grid {
        grid-template-columns: 1fr;
    }

    .culture-card.primary {
        grid-column: 1;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .contact-qr {
        order: -1;
    }

    .brand-showcase {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 30px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

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

    .culture-card.primary h3 {
        font-size: 22px;
    }
}

/* --- 动画 --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}