/* ABTIDE Full Website Styles */

:root {
    /* 品牌色 - 微调 */
    --brand-red: #E60012;
    --brand-red-dark: #A01830;
    --brand-red-light: #E85D75;
    --brand-gold: #C9A962;
    --brand-gold-light: #D4B978;
    
    /* 深色背景 - Navy替代纯黑 */
    --bg-navy: #0A1628;
    --bg-navy-light: #1A2A42;
    
    /* 中性色 */
    --text-primary: #1D1D1F;
    --text-secondary: #6E6E73;
    --text-tertiary: #86868B;
    --bg-white: #FFFFFF;
    --bg-gray: #F8F8F8;
    --bg-dark: #0A1628;
    --border-light: #E8E8E8;
    
    /* 字体 - 现代无衬线，国际化风格 */
    --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    
    /* 间距系统 - 增加呼吸感 */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 32px;
    --space-lg: 64px;
    --space-xl: 100px;
    --space-2xl: 160px;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-display);
    color: var(--text-primary);
    background: var(--bg-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -moz-font-smoothing: always;
    font-smooth: always;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

/* 标题同样使用无衬线字体，更现代 */
h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    gap: 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.nav-logo img {
    height: 52px;
    width: auto;
}

.nav-logo-text {
    display: none;
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
    flex-shrink: 0;
}

.nav-links > li {
    position: relative;
    flex-shrink: 0;
    white-space: nowrap;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s;
    opacity: 0.8;
    padding: 8px 16px;
    border-radius: 8px;
}

.nav-links a:hover {
    color: #E60012;
    opacity: 1;
    background: rgba(230, 0, 18, 0.08);
}

/* 下拉菜单 */
.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border-radius: 12px;
    padding: 12px 0;
    min-width: 220px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s;
    margin-top: 10px;
}

.dropdown a {
    display: block;
    padding: 12px 24px;
    font-size: 14px;
    opacity: 1;
    text-decoration: none;
    transition: all 0.3s;
}

.dropdown a:hover {
    background: rgba(230, 0, 18, 0.08);
    color: #E60012;
}

.btn-buy {
    padding: 10px 24px;
    background: var(--brand-red);
    color: white !important;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-buy:hover {
    background: var(--brand-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(230, 0, 18, 0.3);
}

/* 导航栏联系我们按钮 */
.nav-contact-btn {
    padding: 10px 24px;
    background: var(--brand-red);
    color: white;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
}

.nav-contact-btn:hover {
    background: var(--brand-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(230, 0, 18, 0.3);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    min-height: 100dvh;
    min-height: calc(100vh - 1px);
    background: linear-gradient(180deg, #FAFAFA 0%, #FFFFFF 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 40px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.lab-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0.1;
}

.molecule {
    position: absolute;
    width: 300px;
    height: 300px;
    border: 2px solid var(--brand-red);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

.molecule:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.molecule:nth-child(2) {
    top: 60%;
    right: 10%;
    animation-delay: -7s;
}

.molecule:nth-child(3) {
    bottom: 10%;
    left: 30%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.hero-content {
    text-align: center;
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.canada-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 0, 0, 0.08);
    color: var(--canada-red);
    padding: 10px 20px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 72px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 22px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.btn {
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--brand-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(230, 0, 18, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-light);
}

.btn-secondary:hover {
    border-color: #E60012;
    color: #E60012;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
}

.social-proof {
    display: flex;
    gap: 32px;
    margin-top: 32px;
    font-size: 15px;
    color: rgba(255,255,255,0.9);
    flex-wrap: wrap;
    justify-content: center;
}

.social-proof span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 56px;
    font-weight: 800;
    color: #E60012;
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* Sections通用 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header.light {
    color: white;
}

.eyebrow {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #E60012;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
    color: #1a1a2e;
}

.section-header p {
    font-size: 20px;
    color: #666;
}

/* 个性化推荐 */
.quiz-section {
    padding: var(--space-2xl) 0;
    background: linear-gradient(135deg, #1D1D1F 0%, #2D2D2F 100%);
    color: white;
}

.quiz-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.quiz-text .eyebrow {
    color: var(--brand-red-light);
}

.quiz-text h2 {
    font-size: 48px;
    font-weight: 700;
    margin: 16px 0;
}

.quiz-text p {
    font-size: 20px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
}

.quiz-features {
    list-style: none;
    margin-bottom: 40px;
}

.quiz-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 17px;
    color: rgba(255,255,255,0.9);
}

.quiz-features li span {
    color: #10B981;
    font-weight: 700;
}

.quiz-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
}

.quiz-icon {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--brand-red) 0%, var(--brand-red-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    box-shadow: 0 40px 80px rgba(230,0,18,0.3);
    animation: float 3s ease-in-out infinite;
}

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

.quiz-stats {
    display: flex;
    gap: 48px;
}

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

.quiz-stat .num {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--brand-red-light);
}

.quiz-stat .label {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-top: 4px;
}

@media (max-width: 768px) {
    .quiz-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .quiz-text h2 {
        font-size: 36px;
    }
    
    .quiz-icon {
        width: 150px;
        height: 150px;
        font-size: 60px;
    }
}

/* 核心技术 */
.tech-section {
    padding: 120px 0;
    background: var(--bg-white);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.tech-card {
    background: var(--bg-gray);
    border-radius: 24px;
    padding: 48px;
    transition: all 0.3s;
}

.tech-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.tech-icon {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    margin-bottom: 24px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.tech-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.tech-card p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.learn-more {
    color: #E60012;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
}

.learn-more:hover {
    background: rgba(230, 0, 18, 0.08);
    border-radius: 6px;
}

/* 产品系列 */
.products-section {
    padding: 120px 0;
    background: var(--bg-dark);
    color: white;
}

.products-showcase {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.product-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.product-item.reverse {
    direction: rtl;
}

.product-item.reverse > * {
    direction: ltr;
}

.product-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, rgba(230,0,18,0.2) 0%, rgba(230,0,18,0.05) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 160px;
    border: 2px solid rgba(230,0,18,0.3);
}

.product-image.featured {
    background: linear-gradient(135deg, var(--brand-red) 0%, var(--brand-red-dark) 100%);
    box-shadow: 0 40px 80px rgba(230,0,18,0.4);
}

/* 产品图片样式 */
.product-image-img {
    width: 400px;
    height: 400px;
    object-fit: contain;
    border-radius: 20px;
    transition: transform 0.3s ease;
}

.product-image-img:hover {
    transform: scale(1.05);
}

.product-image-img.featured {
    box-shadow: 0 40px 80px rgba(230,0,18,0.3);
}

.product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--brand-red);
    color: white;
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
}

.product-badge.hot {
    background: linear-gradient(135deg, #FF6B35 0%, #FF4500 100%);
    top: 60px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.product-info {
    max-width: 500px;
}

.product-category {
    display: inline-block;
    color: #E60012;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.product-info h3 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.product-desc {
    font-size: 18px;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 24px;
}

.product-features {
    list-style: none;
    margin-bottom: 32px;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 16px;
    color: rgba(255,255,255,0.9);
}

.product-features li span {
    color: #E60012;
    font-weight: 700;
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
    border-color: #E60012;
    background: var(--brand-red);
}

/* 科研预览 */
.research-preview {
    padding: 120px 0;
    background: var(--bg-white);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.research-card {
    background: var(--bg-gray);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s;
}

.research-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(0,0,0,0.1);
}

.research-card.large {
    grid-column: span 2;
    grid-row: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.research-image {
    height: 200px;
    background: linear-gradient(135deg, #e8e8ed 0%, #f5f5f7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
}

.research-card.large .research-image {
    height: 100%;
}

.research-content {
    padding: 32px;
}

.research-content h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.research-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.research-content a {
    color: #E60012;
    text-decoration: none;
    font-weight: 600;
}

/* 作者背书 */
.author-section {
    padding: 120px 0;
    background: var(--bg-gray);
}

.author-content {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 80px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.author-image {
    position: relative;
}

.author-photo {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #e8e8ed 0%, #f5f5f7 100%);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 160px;
}

.author-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--brand-red);
    color: white;
    padding: 20px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 16px 32px rgba(230,0,18,0.3);
}

.author-badge span:first-child {
    display: block;
    font-size: 32px;
    font-weight: 800;
}

.author-badge span:last-child {
    font-size: 13px;
    opacity: 0.9;
}

.author-info h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
}

.author-title {
    font-size: 20px;
    color: #E60012;
    font-weight: 600;
    margin-bottom: 32px;
}

.author-books {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.book-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: white;
    padding: 20px 24px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.book-icon {
    font-size: 32px;
}

.book-info h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 4px;
}

.book-info p {
    font-size: 14px;
    color: var(--text-secondary);
}

.author-desc {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.author-stats {
    display: flex;
    gap: 32px;
    margin: 24px 0;
    padding: 20px 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

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

.author-stat .stat-num {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: #E60012;
}

.author-stat .stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.author-quote {
    background: linear-gradient(135deg, #FFF5F5 0%, #FFFFFF 100%);
    border-left: 4px solid var(--brand-red);
    padding: 20px 24px;
    margin: 24px 0;
    border-radius: 0 12px 12px 0;
    position: relative;
}

.author-quote p {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.6;
    font-style: italic;
}

.quote-mark {
    font-size: 32px;
    color: #E60012;
    line-height: 1;
    opacity: 0.5;
}

/* FAQ区域 */
.faq-section {
    padding: var(--space-2xl) 0;
    background: var(--bg-white);
}

.faq-grid {
    max-width: 900px;
    margin: 60px auto 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-gray);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 28px;
    cursor: pointer;
    user-select: none;
}

.faq-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.faq-question h3 {
    flex: 1;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.faq-toggle {
    font-size: 24px;
    color: #E60012;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 28px 24px 68px;
}

.faq-answer p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-secondary);
}

.faq-answer strong {
    color: #E60012;
    font-weight: 600;
}

/* CTA区域 */
.cta-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: #1a1a2e;
    text-align: center;
}

.cta-section h2 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-section > p {
    font-size: 20px;
    color: #555;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
}

.btn-white {
    background: #E60012;
    color: white;
}

.btn-white:hover {
    background: #a01830;
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    color: #E60012;
    border: 2px solid #E60012;
}

.btn-outline-white:hover {
    background: rgba(255,255,255,0.1);
    border-color: white;
}

.trust-signals {
    display: flex;
    justify-content: center;
    gap: 40px;
    font-size: 15px;
    opacity: 0.9;
}

/* 页脚 */
footer {
    background: var(--bg-dark);
    color: white;
}

.footer-main {
    padding: 80px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 60px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-brand .logo-section {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-brand img {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1);
}

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

.footer-brand .logo-text .en {
    font-size: 28px;
    font-weight: 800;
    color: white;
    letter-spacing: -0.5px;
    line-height: 1;
}

.footer-brand .logo-text .cn {
    font-size: 14px;
    color: #86868B;
    letter-spacing: 0.1em;
    margin-top: 4px;
}

.footer-brand p {
    font-size: 15px;
    color: #86868B;
    line-height: 1.7;
    margin-bottom: 24px;
}

.footer-canada {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--canada-red);
    font-weight: 600;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

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

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

.footer-column a {
    color: #86868B;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 30px 0;
}

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

.footer-bottom p {
    font-size: 13px;
    color: #86868B;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: #86868B;
    text-decoration: none;
    font-size: 13px;
}

/* 弹窗 */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: white;
    border-radius: 24px;
    padding: 48px;
    max-width: 480px;
    width: 100%;
    text-align: center;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-gray);
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.modal > p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.qr-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 32px;
    background: var(--bg-gray);
    padding: 6px;
    border-radius: 12px;
}

.qr-tab {
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s;
    border: none;
    background: transparent;
}

.qr-tab.active {
    background: white;
    color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.qr-display {
    width: 200px;
    height: 200px;
    background: var(--bg-gray);
    border-radius: 16px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.qr-hint {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* 响应式 */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 56px;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-item {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-item.reverse {
        direction: ltr;
    }
    
    .research-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .research-card.large {
        grid-column: span 2;
        grid-row: span 1;
        grid-template-columns: 1fr;
    }
    
    .author-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .author-image {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 40px;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .stat-number {
        font-size: 40px;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .product-image {
        width: 280px;
        height: 280px;
        font-size: 100px;
    }
    
    .product-info h3 {
        font-size: 32px;
    }
    
    .research-grid {
        grid-template-columns: 1fr;
    }
    
    .research-card.large {
        grid-column: span 1;
    }
    
    .cta-section h2 {
        font-size: 36px;
    }
    
    .trust-signals {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom .container {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .social-proof {
        flex-direction: column;
        gap: 12px;
        font-size: 14px;
    }

    .faq-grid {
        padding: 0 16px;
    }

    .faq-question {
        padding: 20px;
    }

    .faq-question h3 {
        font-size: 16px;
    }

    .faq-item.active .faq-answer {
        padding: 0 20px 20px 56px;
    }

    .author-stats {
        flex-direction: column;
        gap: 16px;
    }
}

/* 用户真实评价区域 */
.reviews-section {
    padding: var(--space-2xl) 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%) !important;
    color: white !important;
    overflow: hidden;
}

.rating-summary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.big-rating {
    font-size: 64px;
    font-weight: 700;
    color: #E60012;
    line-height: 1;
}

.stars {
    font-size: 24px;
    letter-spacing: 4px;
}

.rating-count {
    color: var(--text-secondary);
    font-size: 16px;
}

.reviews-marquee {
    margin-top: 60px;
    position: relative;
    width: 100%;
    overflow: hidden;
}

.reviews-marquee::before,
.reviews-marquee::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 150px;
    z-index: 2;
    pointer-events: none;
}

.reviews-marquee::before {
    left: 0;
    background: linear-gradient(90deg, var(--bg-gray) 0%, transparent 100%);
}

.reviews-marquee::after {
    right: 0;
    background: linear-gradient(270deg, var(--bg-white) 0%, transparent 100%);
}

.reviews-track {
    display: flex;
    gap: 24px;
    animation: scroll-reviews 40s linear infinite;
    width: max-content;
}

.reviews-track:hover {
    animation-play-state: paused;
}

@keyframes scroll-reviews {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.review-card {
    background: rgba(0,0,0,0.3) !important;
    border-radius: 20px;
    padding: 28px;
    width: 380px;
    flex-shrink: 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.review-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

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

.reviewer-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-red-light) 0%, var(--brand-red) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.reviewer-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.reviewer-name {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
}

.verified-badge {
    font-size: 12px;
    color: #10B981;
    font-weight: 500;
}

.review-rating {
    font-size: 14px;
    letter-spacing: 2px;
}

.review-product {
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--bg-gray);
    padding: 6px 12px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 16px;
}

.review-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.review-date {
    font-size: 13px;
    color: var(--text-tertiary);
}

.reviews-cta {
    text-align: center;
    margin-top: 48px;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .review-card {
        width: 320px;
        padding: 20px;
    }
    
    .big-rating {
        font-size: 48px;
    }
    
    .reviews-marquee::before,
    .reviews-marquee::after {
        width: 60px;
    }
}
/* ========================================
   性能优化 & 用户体验增强
   ======================================== */

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 56px;
    height: 56px;
    background: var(--brand-red);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(230, 0, 18, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top:hover {
    background: var(--brand-red-dark);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(230, 0, 18, 0.4);
}

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

/* 页面加载器 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #F5F5F7;
    border-top-color: #E60012;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

.page-loader p {
    color: var(--text-secondary);
    font-size: 14px;
}

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

/* ========================================
   移动端优化
   ======================================== */

@media (max-width: 768px) {
    /* 导航栏移动端优化 */
    .navbar {
        height: 60px;
    }
    
    .nav-container {
        padding: 0 20px;
        height: 60px;
    }
    
    .nav-logo img {
        height: 40px;
    }
    
    .nav-links {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        transition: left 0.3s ease;
        overflow-y: auto;
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links > li {
        width: 100%;
        border-bottom: 1px solid var(--border-light);
    }
    
    .nav-links a {
        display: block;
        padding: 16px 0;
        font-size: 16px;
    }
    
    .has-dropdown .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 20px;
        margin-top: 0;
        display: none;
    }
    
    .has-dropdown.active .dropdown {
        display: block;
    }
    
    .btn-buy {
        display: inline-block;
    }
    
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        background: none;
        border: none;
        cursor: pointer;
        color: var(--text-primary);
        width: 44px;
        height: 44px;
        transition: color 0.3s;
    }
    
    .mobile-menu-btn:hover {
        color: #E60012;
    }
    
    /* Hero区域移动端 */
    .hero {
        min-height: 80vh;
        min-height: 80dvh;
        padding: 100px 20px 60px;
    }
    
    .hero h1 {
        font-size: 32px;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .social-proof {
        flex-direction: column;
        gap: 12px;
    }
    
    /* 按钮触摸优化 */
    .btn, .nav-links a, .faq-question {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 移除hover效果，改为active */
    .product-card:hover {
        transform: none;
    }
    
    .product-card:active {
        transform: scale(0.98);
    }
    
    .tech-card:hover {
        transform: none;
    }
    
    .tech-card:active {
        transform: scale(0.98);
    }
    
    /* 返回顶部按钮移动端 */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    /* 产品展示移动端 */
    .product-item {
        flex-direction: column !important;
    }
    
    .product-item.reverse {
        flex-direction: column !important;
    }
    
    .product-visual,
    .product-info {
        width: 100%;
    }
    
    /* 容器内边距 */
    .container {
        padding: 0 20px;
    }
    
    section {
        padding: 60px 0;
    }
    
    /* 字体大小调整 */
    h2 {
        font-size: 32px;
    }
    
    h3 {
        font-size: 24px;
    }
    
    /* FAQ移动端 */
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    /* 评价卡片移动端 */
    .review-card {
        width: 280px;
        padding: 20px;
    }
    
    /* 模态框移动端 */
    .modal {
        width: 90%;
        max-width: 400px;
        margin: 20px;
    }
}

/* 小屏幕优化 (iPhone SE等) */
@media (max-width: 375px) {
    .hero h1 {
        font-size: 28px;
    }
    
    .nav-logo img {
        height: 36px;
    }
    
    .back-to-top {
        bottom: 16px;
        right: 16px;
        width: 44px;
        height: 44px;
    }
}

/* 平板优化 */
@media (min-width: 769px) and (max-width: 1024px) {
    .nav-container {
        padding: 0 30px;
    }
    
    .container {
        padding: 0 40px;
    }
    
    .hero-stats {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .products-showcase {
        padding: 0 20px;
    }
}

/* 大屏幕优化 */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
    
    .nav-container {
        max-width: 1400px;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .nav-logo img {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .mobile-menu-btn,
    .back-to-top,
    .page-loader,
    footer {
        display: none;
    }
    
    .hero {
        page-break-after: always;
    }
}

/* 暗色模式支持（可选） */
@media (prefers-color-scheme: dark) {
    /* 如需支持暗色模式，在此添加样式 */
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   FAQ搜索功能
   ======================================== */

.faq-search-box {
    max-width: 600px;
    margin: 0 auto 40px;
    position: relative;
}

.faq-search-input {
    width: 100%;
    padding: 16px 24px;
    font-size: 16px;
    border: 2px solid var(--border-light);
    border-radius: 50px;
    background: white;
    transition: all 0.3s ease;
    outline: none;
}

.faq-search-input:focus {
    border-color: #E60012;
    box-shadow: 0 4px 12px rgba(230, 0, 18, 0.1);
}

.faq-search-input::placeholder {
    color: var(--text-tertiary);
}

.faq-search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    margin-top: 8px;
    max-height: 400px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.faq-search-results.active {
    display: block;
}

.faq-search-result-item {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: background 0.2s;
}

.faq-search-result-item:last-child {
    border-bottom: none;
}

.faq-search-result-item:hover {
    background: var(--bg-gray);
}

.faq-search-result-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.faq-search-result-preview {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.faq-search-highlight {
    background: rgba(230, 0, 18, 0.1);
    color: #E60012;
    font-weight: 600;
    padding: 2px 4px;
    border-radius: 3px;
}

.faq-search-no-results {
    padding: 24px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

/* FAQ项高亮 */
.faq-item.highlight {
    animation: highlightFade 2s ease;
    border: 2px solid var(--brand-red);
}

@keyframes highlightFade {
    0% {
        background: rgba(230, 0, 18, 0.1);
    }
    100% {
        background: transparent;
    }
}

/* 面包屑导航 */
@media (max-width: 576px) {
    /* 导航栏优化 */
    .nav-container {
        padding: 0 16px;
        height: 60px;
    }
    
    .nav-logo img {
        height: 40px;
    }
    
    .nav-links {
        display: none; /* 隐藏桌面导航 */
    }
    
    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        font-size: 24px;
        cursor: pointer;
        padding: 8px;
    }
    
    /* Hero区域优化 */
    .home-hero {
        padding: 80px 20px 60px;
        min-height: auto;
    }
    
    .home-hero h1 {
        font-size: 32px;
        letter-spacing: -1px;
        line-height: 1.2;
        margin-bottom: 16px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        line-height: 1.6;
        margin-bottom: 32px;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 12px;
        margin-bottom: 40px;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 14px 28px;
        font-size: 15px;
        width: 100%;
        max-width: 280px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    /* 页面头部优化 */
    .page-hero {
        padding: 80px 20px 40px;
        min-height: auto;
    }
    
    .page-hero h1 {
        font-size: 36px;
    }
    
    .page-hero .subtitle {
        font-size: 16px;
    }
    
    /* 产品网格优化 */
    .series-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 16px;
    }
    
    .series-card {
        border-radius: 16px;
    }
    
    .series-image {
        height: 280px;
    }
    
    .series-content {
        padding: 20px;
    }
    
    .series-content h3 {
        font-size: 22px;
    }
    
    /* 面包屑优化 */
    .content-section {
        padding: 40px 16px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .section-header p {
        font-size: 15px;
    }
    
    /* 产品详情页优化 */
    .product-hero-container {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 0 16px;
    }
    
    .product-gallery {
        padding: 20px;
    }
    
    .main-image-container {
        padding: 16px;
    }
    
    .product-info h1 {
        font-size: 28px;
    }
    
    .product-detail {
        padding: 24px;
    }
    
    /* 页脚优化 */
    footer {
        padding: 40px 16px;
    }
    
    footer .container div {
        flex-direction: column;
        gap: 16px;
    }
}

/* 小屏幕: 576px - 768px (大手机/小平板) */
@media (min-width: 576px) and (max-width: 768px) {
    .nav-container {
        padding: 0 24px;
    }
    
    .home-hero h1 {
        font-size: 42px;
    }
    
    .series-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .page-hero h1 {
        font-size: 42px;
    }
    
    .product-hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* 中等屏幕: 768px - 992px (平板) */
@media (min-width: 768px) and (max-width: 992px) {
    .nav-container {
        padding: 0 32px;
    }
    
    .home-hero h1 {
        font-size: 48px;
    }
    
    .series-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .series-image {
        height: 360px;
    }
    
    .product-hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

/* 大屏幕: 992px - 1200px (小桌面) */
@media (min-width: 992px) and (max-width: 1200px) {
    .series-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    
    .nav-container {
        padding: 0 40px;
    }
}

/* 超大屏幕: > 1400px (大桌面) */
@media (min-width: 1400px) {
    .nav-container,
    .container {
        max-width: 1400px;
    }
}

/* 横屏手机优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .home-hero {
        min-height: auto;
        padding: 60px 20px 40px;
    }
    
    .home-hero h1 {
        font-size: 28px;
    }
    
    .hero-stats {
        flex-direction: row;
        gap: 40px;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .btn-primary:hover,
    .btn-secondary:hover {
        transform: none;
    }
    
    .series-card:hover {
        transform: none;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    img {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* ============================================
   Focus 状态样式 - 无障碍 (WCAG 2.2)
   ============================================ */

/* 基础 Focus 样式 */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid #E60012;
    outline-offset: 2px;
    border-radius: 4px;
}

/* 按钮 Focus 样式 */
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-buy:focus-visible {
    outline: 3px solid #E60012;
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(230, 0, 18, 0.2);
}

/* 导航链接 Focus 样式 */
.nav-links a:focus-visible {
    outline: 2px solid #E60012;
    outline-offset: 4px;
    border-radius: 2px;
}

/* 下拉菜单项 Focus 样式 */
.dropdown a:focus-visible {
    outline: 2px solid #E60012;
    outline-offset: -2px;
    background: rgba(230, 0, 18, 0.1);
}

/* 卡片 Focus 样式 */
.series-card:focus-visible,
.product-card:focus-visible,
.featured-card:focus-visible {
    outline: 3px solid #E60012;
    outline-offset: 4px;
    box-shadow: 0 0 0 6px rgba(230, 0, 18, 0.15);
}

/* 表单输入 Focus 样式 */
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid #E60012;
    outline-offset: 0;
    border-color: #E60012;
    box-shadow: 0 0 0 3px rgba(230, 0, 18, 0.1);
}

/* 面包屑链接 Focus 样式 */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #E60012;
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    font-weight: 600;
    z-index: 10000;
    border-radius: 0 0 4px 0;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
    outline: none;
}

/* 减少动画偏好支持 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .home-hero::before {
        animation: none !important;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .btn-primary {
        border: 2px solid white;
    }
    
    button:focus-visible {
        outline-width: 4px;
    }
}

/* ============================================
   微交互优化 - Micro-interactions
   ============================================ */

/* 按钮点击反馈 */
.btn-primary:active,
.btn-secondary:active,
.btn-buy:active {
    transform: scale(0.97);
    transition: transform 0.1s ease;
}

/* 导航链接下划线动画 */
.nav-links > li > a {
    position: relative;
}

.nav-links > li > a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #E60012;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links > li > a:hover::after,
.nav-links > li > a:focus-visible::after {
    width: 100%;
}

/* 当前页面导航高亮 */
.nav-links > li > a[aria-current="page"]::after,
.nav-links > li > a[style*="color: #E60012"]::after {
    width: 100%;
}

/* 卡片图片缩放动画 */
.series-card .series-image img,
.product-card .product-image img,
.featured-card .featured-image img {
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.series-card:hover .series-image img,
.product-card:hover .product-image img,
.featured-card:hover .featured-image img {
    transform: scale(1.05);
}

/* 卡片悬浮效果 */
.series-card,
.product-card,
.featured-card {
    transition: 
        transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
        box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.series-card:hover,
.product-card:hover,
.featured-card:hover {
    transform: translateY(-8px);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.1),
        0 8px 16px rgba(0, 0, 0, 0.05);
}

/* 按钮悬浮效果 */
.btn-primary {
    transition: 
        background-color 0.3s ease,
        transform 0.2s ease,
        box-shadow 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #ff1a2e 0%, #E60012 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(230, 0, 18, 0.35);
}

.btn-secondary {
    transition: 
        background-color 0.3s ease,
        border-color 0.3s ease,
        transform 0.2s ease;
}

.btn-secondary:hover {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-2px);
}

/* 链接悬浮效果 */
a:not(.btn-primary):not(.btn-secondary):not(.btn-buy) {
    transition: color 0.2s ease;
}

/* 下拉菜单动画 */
.dropdown {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: 
        opacity 0.2s ease,
        visibility 0.2s ease,
        transform 0.2s ease;
}

.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 下拉菜单项悬浮 */
.dropdown a {
    transition: 
        background-color 0.2s ease,
        color 0.2s ease,
        padding-left 0.2s ease;
}

.dropdown a:hover {
    background: rgba(230, 0, 18, 0.05);
    color: #E60012;
    padding-left: 24px;
}

/* 面包屑链接悬浮 */
.stat-number {
    transition: transform 0.3s ease;
}

.stat:hover .stat-number {
    transform: scale(1.1);
}

/* 产品标签悬浮 */
.product-tag,
.series-badge {
    transition: 
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.series-card:hover .series-badge,
.product-card:hover .product-tag {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(230, 0, 18, 0.3);
}

/* 输入框焦点动画 */
input,
textarea,
select {
    transition: 
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

/* 页面加载渐入动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* 延迟动画类 */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* 滚动显示动画 */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.animate-slide-left {
    animation: slideInLeft 0.6s ease-out forwards;
}

.animate-slide-right {
    animation: slideInRight 0.6s ease-out forwards;
}

/* 脉冲动画（用于重要提示） */
@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(230, 0, 18, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(230, 0, 18, 0);
    }
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* 骨架屏加载动画 */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* ============================================
   产品推荐模块 - Product Recommendations (Merged)
   ============================================ */

.recommendations-section {
    padding: 80px 40px;
    background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
    border-top: 1px solid #e9ecef;
}

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

.recommendations-header {
    text-align: center;
    margin-bottom: 48px;
}

.recommendations-header .eyebrow {
    font-size: 13px;
    font-weight: 600;
    color: #E60012;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 12px;
    display: block;
}

.recommendations-header h2 {
    font-size: 36px;
    font-weight: 300;
    color: #1a1a2e;
    margin-bottom: 12px;
}

.recommendations-header p {
    font-size: 17px;
    color: #6E6E73;
}

.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.recommendation-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: block;
}

.recommendation-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12);
}

/* 产品图片区域 - 白色背景，无其他颜色 */
.recommendation-image {
    height: 280px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    overflow: hidden;
}

.recommendation-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.recommendation-card:hover .recommendation-image img {
    transform: scale(1.05);
}

.recommendation-content {
    padding: 24px;
}

.recommendation-badge {
    display: inline-block;
    background: linear-gradient(135deg, #E60012 0%, #ff4757 100%);
    color: white;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.recommendation-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 10px;
    line-height: 1.3;
}

.recommendation-content p {
    font-size: 15px;
    color: #6E6E73;
    line-height: 1.6;
    margin-bottom: 12px;
}

.recommendation-price {
    font-size: 24px;
    font-weight: 700;
    color: #E60012;
    margin-bottom: 16px;
}

.recommendation-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.recommendation-benefits span {
    background: #f5f5f5;
    padding: 6px 12px;
    border-radius: 100px;
    font-size: 13px;
    color: #555;
}

.recommendation-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #E60012;
    font-size: 15px;
    font-weight: 600;
    transition: gap 0.2s ease;
}

.recommendation-card:hover .recommendation-arrow {
    gap: 10px;
}

/* 搭配提示 */
.recommendation-note {
    background: white;
    border-radius: 16px;
    padding: 24px 28px;
    margin-top: 40px;
    border-left: 4px solid #E60012;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.recommendation-note p {
    margin: 0;
    color: #555;
    font-size: 16px;
    line-height: 1.6;
}

/* 响应式 */
@media (max-width: 992px) {
    .recommendations-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .recommendation-image {
        height: 240px;
    }
}

@media (max-width: 576px) {
    .recommendations-section {
        padding: 60px 16px;
    }
    
    .recommendations-header h2 {
        font-size: 28px;
    }
    
    .recommendations-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .recommendation-image {
        height: 220px;
        padding: 20px;
    }
    
    .recommendation-content {
        padding: 20px;
    }
    
    .recommendation-content h3 {
        font-size: 18px;
    }
}




/* ============================================
   面包屑导航 - 统一样式（无!important）
   ============================================ */

/* 基础样式 */
.breadcrumb {
    background: #f8f8f8;
    padding: 16px 40px;
    border-bottom: 1px solid #e8e8e8;
    position: relative;
    z-index: 10;
    width: 100%;
    margin: 0;
}

.breadcrumb-content {
    max-width: 1200px;
    margin: 0 auto;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s;
}

.breadcrumb a:hover {
    color: #E60012;
}

.breadcrumb-separator {
    margin: 0 8px;
    color: #999;
    display: inline;
    font-weight: normal;
}

.breadcrumb-current {
    color: #1a1a2e;
    font-weight: 500;
}

/* 深色面包屑（用于Hero区后） */
.breadcrumb-dark {
    background: #1a1a2e;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.breadcrumb-dark .breadcrumb-content {
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb-dark a {
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb-dark a:hover {
    color: #fff;
}

.breadcrumb-dark .breadcrumb-current {
    color: #fff;
    font-weight: 500;
}

.breadcrumb-dark .breadcrumb-separator {
    color: rgba(255, 255, 255, 0.4);
    display: inline;
}

/* Hero区后的面包屑样式 */
.page-hero ~ .breadcrumb,
.brand-hero ~ .breadcrumb,

.page-hero ~ .breadcrumb .breadcrumb-content,
.brand-hero ~ .breadcrumb .breadcrumb-content,

.page-hero ~ .breadcrumb a,
.brand-hero ~ .breadcrumb a,

.page-hero ~ .breadcrumb a:hover,
.brand-hero ~ .breadcrumb a:hover,

.page-hero ~ .breadcrumb .breadcrumb-current,
.brand-hero ~ .breadcrumb .breadcrumb-current,

.page-hero ~ .breadcrumb .breadcrumb-separator,
.brand-hero ~ .breadcrumb .breadcrumb-separator,

/* 响应式 */
@media (max-width: 768px) {
    .breadcrumb {
        padding: 12px 20px;
    }
    
    .breadcrumb-content {
        font-size: 13px;
    }
    
    .breadcrumb-separator {
        margin: 0 6px;
    }
}

/* 移动端导航增强 */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        display: none;
        z-index: 999;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .nav-links li:last-child {
        border-bottom: none;
    }
    
    .nav-links > li > a {
        padding: 16px 12px;
        display: block;
        font-size: 16px;
    }
    
    .nav-links .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 20px;
        margin-top: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-links .has-dropdown.active .dropdown {
        max-height: 500px;
    }
    
    .nav-links .dropdown a {
        padding: 12px;
        font-size: 14px;
        border-left: 2px solid #f0f0f0;
    }
    
    .mobile-menu-btn.active {
        color: #E60012;
    }
}

/* ========== Windows/Chrome 跨浏览器优化 ========== */
/* 改善emoji在Windows Chrome中的显示 */
.emoji, [class*="emoji"], .scenario-emoji, .explore-icon, .feature-icon {
    font-family: "Segoe UI Emoji", "Segoe UI Symbol", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
    text-shadow: none;
    -webkit-text-shadow: none;
}

/* 改善所有图标的渲染 */
.icon, [class*="icon"] {
    display: inline-block;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 强制图片边框统一 */
img {
    border-radius: inherit;
}

/* 改善按钮在Windows上的渲染 */
button, .btn {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 改善输入框在Windows上的渲染 */
input, textarea, select {
    font-family: inherit;
    -webkit-font-smoothing: antialiased;
}