/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 */
    --color-primary: #2C3E50;
    --color-secondary: #D4AF37;
    --color-accent: #B76E79;
    
    /* 中性色 */
    --color-white: #FFFFFF;
    --color-black: #000000;
    --color-gray-50: #F8F9FA;
    --color-gray-100: #F1F3F4;
    --color-gray-200: #E8EAED;
    --color-gray-300: #DADCE0;
    --color-gray-400: #BDBDBD;
    --color-gray-500: #9E9E9E;
    --color-gray-600: #757575;
    --color-gray-700: #616161;
    --color-gray-800: #424242;
    --color-gray-900: #212121;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #2C3E50 0%, #34495E 100%);
    --gradient-gold: linear-gradient(135deg, #D4AF37 0%, #F4D03F 100%);
    --gradient-rose: linear-gradient(135deg, #B76E79 0%, #D48894 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

/* ===== 加载动画 ===== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loader-content {
    text-align: center;
}

.loader-logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.loader-bar {
    width: 200px;
    height: 3px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.loader-progress {
    width: 50%;
    height: 100%;
    background: var(--color-secondary);
    border-radius: var(--radius-full);
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(400%); }
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.logo-cn {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 2px;
}

.logo-en {
    font-size: 0.7rem;
    color: var(--color-gray-600);
    letter-spacing: 3px;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--color-gray-700);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-gray-700);
    margin: 5px 0;
    transition: all var(--transition-fast);
    border-radius: 2px;
}

/* ===== Hero 区 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.95) 0%, rgba(52, 73, 94, 0.9) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem;
    animation: fadeInUp 1s ease;
}

.hero-badge {
    display: inline-block;
    background: rgba(212, 175, 55, 0.2);
    color: var(--color-secondary);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.hero-title {
    font-size: 5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.5rem;
    letter-spacing: 10px;
}

.title-en {
    display: block;
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 8px;
    margin-top: 0.5rem;
    opacity: 0.9;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-white);
    font-weight: 300;
    margin-bottom: 1rem;
}

.hero-desc {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    letter-spacing: 3px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    font-size: 0.9rem;
    animation: bounce 2s infinite;
}

.scroll-indicator {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 15px;
    margin: 0 auto 0.5rem;
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 10px;
    background: var(--color-white);
    border-radius: 3px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(20px); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--color-secondary);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
    background: #C9A227;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
}

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

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

.btn-block {
    width: 100%;
}

/* ===== Section 通用样式 ===== */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-tag {
    display: inline-block;
    background: var(--color-gray-100);
    color: var(--color-primary);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 品牌故事 ===== */
.about {
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content .section-tag,
.about-content .section-title {
    text-align: left;
}

.about-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-gray-700);
    margin-bottom: 1.5rem;
}

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

.about-stats {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-gray-600);
}

.about-image {
    position: relative;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #2C3E50 0%, #34495E 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
}

.image-placeholder::after {
    content: '悦享欲 · 品牌故事';
    position: relative;
    z-index: 2;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(255,255,255,0.1) 0%, transparent 70%);
}

/* ===== 产品系列 ===== */
.products {
    background: var(--color-gray-50);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.product-card.featured {
    border: 2px solid var(--color-secondary);
}

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--color-secondary);
    color: var(--color-white);
    padding: 0.3rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 1;
}

.product-image {
    height: 250px;
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
}

.product-info {
    padding: 1.5rem;
}

.product-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.product-desc {
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

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

.product-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.product-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.product-link:hover {
    color: var(--color-secondary);
}

.products-cta {
    text-align: center;
}

/* ===== 品牌优势 ===== */
.features {
    background: var(--color-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 64px;
    height: 64px;
    color: var(--color-secondary);
}

.feature-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.feature-desc {
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ===== 用户评价 ===== */
.testimonials {
    background: var(--color-gray-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.testimonial-content {
    margin-bottom: 1.5rem;
}

.testimonial-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-gray-700);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-info {
    flex: 1;
}

.author-name {
    font-weight: 600;
    color: var(--color-primary);
}

.author-label {
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

/* ===== 健康知识 ===== */
.wiki-section {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.wiki-section .section-tag {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

.wiki-section .section-title,
.wiki-section .section-desc {
    color: var(--color-white);
}

.wiki-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.wiki-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.wiki-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.wiki-list {
    list-style: none;
    margin-bottom: 2rem;
}

.wiki-list li {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.wiki-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.wiki-stat {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
}

.wiki-stat .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.wiki-stat .stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ===== 联系我们 ===== */
.contact {
    background: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.contact-icon {
    font-size: 2rem;
}

.contact-label {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    margin-bottom: 0.25rem;
}

.contact-value {
    font-size: 1.05rem;
    color: var(--color-gray-800);
    font-weight: 500;
}

.contact-form {
    background: var(--color-gray-50);
    padding: 2rem;
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-input {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-secondary);
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: 3rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo {
    margin-bottom: 1rem;
}

.footer-logo .logo-cn {
    color: var(--color-white);
    font-size: 1.8rem;
}

.footer-logo .logo-en {
    color: var(--color-gray-400);
}

.footer-desc {
    color: var(--color-gray-400);
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-white);
}

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

.footer-list li {
    margin-bottom: 0.5rem;
}

.footer-list a {
    color: var(--color-gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-list a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
}

.footer-info {
    text-align: center;
}

.footer-info p {
    margin-bottom: 0.5rem;
    color: var(--color-gray-400);
    font-size: 0.9rem;
}

.footer-info .copyright {
    font-weight: 500;
}

.footer-info .icp a {
    color: var(--color-gray-400);
    text-decoration: none;
}

.footer-info .icp a:hover {
    color: var(--color-secondary);
}

.footer-note {
    font-style: italic;
    font-size: 0.85rem;
}

/* ===== 回到顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--color-secondary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

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

.back-to-top:hover {
    background: #C9A227;
    transform: translateY(-5px);
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--color-white);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-base);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 3rem;
        letter-spacing: 5px;
    }
    
    .title-en {
        font-size: 0.9rem;
        letter-spacing: 3px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-grid,
    .contact-grid,
    .wiki-content,
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        justify-content: space-around;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.8s ease;
}
: 2rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.8s ease;
}