/* 自定义字体 */
@font-face {
    font-family: 'BrandFont';
    src: url('../fonts/brand-font.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* 基础变量 */
:root {
    --primary-color: #0056ff;
    --secondary-color: #3176ff;
    --accent-color: #1a5cff;
    --bg-light: #f3f5f8;
    --bg-lighter: #ffffff;
    --text-dark: #111827;
    --text-gray: #6b7280;
    --card-bg: #ffffff;
    --card-border: rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 动态背景 */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, var(--bg-light) 0%, #e8edf5 50%, var(--bg-light) 100%);
    overflow: hidden;
    animation: bgGradientShift 15s ease infinite;
}

@keyframes bgGradientShift {
    0%, 100% {
        background: linear-gradient(135deg, var(--bg-light) 0%, #e8edf5 50%, var(--bg-light) 100%);
    }
    50% {
        background: linear-gradient(135deg, #e8edf5 0%, var(--bg-light) 50%, #e8edf5 100%);
    }
}

.bg-animation::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 86, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}


/* 渐变光球 */
.bg-gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

.bg-gradient-orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary-color), transparent);
    top: -10%;
    left: -10%;
    animation: float1 20s infinite;
}

.bg-gradient-orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--secondary-color), transparent);
    top: 50%;
    right: -10%;
    animation: float2 25s infinite;
}

.bg-gradient-orb-3 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, var(--accent-color), transparent);
    bottom: -10%;
    left: 30%;
    animation: float3 30s infinite;
}

@keyframes float1 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(100px, 100px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 150px) scale(0.9);
    }
}

@keyframes float2 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(-150px, -100px) scale(1.2);
    }
    66% {
        transform: translate(-80px, 80px) scale(0.8);
    }
}

@keyframes float3 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(120px, -120px) scale(0.9);
    }
    66% {
        transform: translate(-100px, -80px) scale(1.1);
    }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.navbar.scrolled {
    padding: 15px 0;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

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

.nav-brand {
    font-size: 24px;
    font-weight: 700;
}

.brand-logo {
    display: block;
    text-decoration: none;
}

.brand-logo img {
    height: 40px;
    width: auto;
    display: block;
    transition: var(--transition);
}

.brand-logo:hover img {
    opacity: 0.8;
}

.brand-name {
    text-decoration: none;
    font-family: 'BrandFont', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', sans-serif;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-dark);
    cursor: pointer;
    padding: 5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

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

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

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

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

/* 页面区域 */
.page-section {
    min-height: calc(100vh - 200px);
    padding-top: 120px;
}

/* Hero区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 0 50px;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.company-name {
    font-family: 'BrandFont', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', sans-serif;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--primary-color));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientFlow 3s ease infinite;
}

@keyframes gradientFlow {
    0%, 100% {
        background-position: 0% center;
    }
    50% {
        background-position: 100% center;
    }
}

.hero-slogan {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--primary-color);
    animation: fadeInUp 1s ease 0.2s backwards;
    min-height: 48px;
}

.hero-slogan::after {
    content: '|';
    animation: blink 0.8s infinite;
    margin-left: 2px;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

.hero-description {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 1s ease 0.6s backwards;
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 16px 40px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
    z-index: -1;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff;
    box-shadow:
        0 6px 20px rgba(0, 86, 255, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    border: 2px solid transparent;
    animation: buttonPulse 2s ease-in-out infinite;
}

@keyframes buttonPulse {
    0%, 100% {
        box-shadow:
            0 6px 20px rgba(0, 86, 255, 0.25),
            inset 0 1px 0 rgba(255, 255, 255, 0.3);
    }
    50% {
        box-shadow:
            0 8px 30px rgba(0, 86, 255, 0.4),
            inset 0 1px 0 rgba(255, 255, 255, 0.4);
    }
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        0 8px 28px rgba(0, 86, 255, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow:
        0 4px 12px rgba(0, 86, 255, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    background: #ffffff;
    backdrop-filter: blur(10px);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 86, 255, 0.15);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: #ffffff;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 86, 255, 0.25);
}

.btn-secondary:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: 0 4px 12px rgba(0, 86, 255, 0.2);
}

/* 通用区域样式 */
section {
    padding: 80px 0;
}

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

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 0 auto;
    border-radius: 2px;
}

/* 关于我们 */
.about {
    background: rgba(255, 255, 255, 0.02);
}

/* 关于我们横幅 */
.about-hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 120px;
}

.about-hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.about-hero-date {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.about-hero-slogan {
    margin-top: 40px;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.slogan-highlight {
    font-size: 32px;
    font-weight: 600;
    color: var(--primary-color);
    display: inline-block;
    padding: 15px 40px;
    border: 2px solid var(--primary-color);
    border-radius: 50px;
    background: rgba(0, 212, 255, 0.05);
    backdrop-filter: blur(10px);
}

/* 公司简介 */
.about-intro {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.02);
}

.about-intro-content {
    display: grid;
    gap: 50px;
}

.intro-main {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.intro-main p {
    font-size: 18px;
    color: var(--text-dark);
    line-height: 2;
}

.intro-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.intro-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 40px 30px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.intro-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.intro-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.intro-card p {
    color: var(--text-gray);
    font-size: 16px;
    line-height: 1.8;
}

/* 核心优势 */
.about-features {
    padding: 80px 0;
    background: #ffffff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.about-content {
    display: grid;
    gap: 60px;
}

.about-text {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.8;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1));
    border-radius: 50%;
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-gray);
    font-size: 16px;
}

/* 产品服务 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 40px 30px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(123, 47, 247, 0.05));
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 40px rgba(0, 86, 255, 0.15);
}

.product-card:hover::before {
    opacity: 1;
}

.product-card.featured {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-dark);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.product-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1));
    border-radius: 20px;
    color: var(--primary-color);
    transition: var(--transition);
}

.product-card:hover .product-icon {
    transform: scale(1.1) rotate(5deg);
}

.product-title {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.product-description {
    color: var(--text-gray);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-features {
    list-style: none;
    margin-top: 20px;
}

.product-features li {
    color: var(--text-gray);
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 联系我们 */
.contact {
    background: rgba(255, 255, 255, 0.02);
}

.contact-content {
    display: block;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 30px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.contact-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.contact-qrcode {
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.contact-qrcode .contact-icon {
    margin-bottom: 10px;
}

.contact-qrcode .contact-details {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qrcode-hint {
    color: var(--text-gray);
    font-size: 14px;
    margin-bottom: 15px;
}

.qrcode-image {
    width: 200px;
    height: auto;
    border-radius: 12px;
    margin-top: 15px;
    border: 2px solid var(--card-border);
    transition: var(--transition);
}

.qrcode-image:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.contact-id {
    color: var(--text-gray);
    font-size: 14px;
    margin-top: 5px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1));
    border-radius: 12px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.contact-details p {
    color: var(--text-gray);
    font-size: 16px;
    line-height: 1.6;
}

.contact-details strong {
    color: var(--text-dark);
}

.phone-link {
    color: inherit;
    text-decoration: none;
}

.contact-clickable {
    cursor: pointer;
}

.contact-clickable:hover {
    border-color: var(--secondary-color);
}

/* 二维码模态框 */
.qrcode-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    animation: fadeIn 0.3s ease;
}

.qrcode-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.qrcode-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.qrcode-modal-content {
    position: relative;
    background: var(--card-bg);
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    padding: 40px;
    max-width: 400px;
    text-align: center;
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.3);
    animation: scaleIn 0.3s ease;
    z-index: 1;
}

.qrcode-modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--card-border);
    border-radius: 50%;
    color: var(--text-dark);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qrcode-modal-close:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: rotate(90deg);
}

.qrcode-modal-content h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.qrcode-modal-content img {
    width: 280px;
    height: auto;
    border-radius: 12px;
    border: 2px solid var(--card-border);
    margin: 20px 0;
}

.qrcode-modal-content p {
    color: var(--text-gray);
    font-size: 14px;
    margin-top: 15px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* 页脚 */
.footer {
    background: #ffffff;
    border-top: 1px solid var(--card-border);
    padding: 40px 0 20px;
    margin-top: 80px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--card-border);
}

.footer-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.footer-links {
    display: flex;
    gap: 30px;
}

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

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

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

.footer-bottom p {
    color: var(--text-gray);
    font-size: 14px;
    margin-bottom: 15px;
}

.footer-filing {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 15px;
}

.filing-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-gray);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
    padding: 5px 10px;
    border-radius: 6px;
}

.filing-link:hover {
    color: var(--primary-color);
    background: rgba(0, 212, 255, 0.05);
}

.filing-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-slogan {
        font-size: 24px;
    }

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

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

    .slogan-highlight {
        font-size: 24px;
        padding: 12px 30px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .intro-details {
        grid-template-columns: 1fr;
    }

    .products-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    /* 移动端禁用虚化效果以提升性能 */
    .navbar {
        backdrop-filter: none;
        background: rgba(255, 255, 255, 1);
    }

    .navbar.scrolled {
        backdrop-filter: none;
        background: rgba(255, 255, 255, 1);
    }

    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: rgba(255, 255, 255, 1);
        backdrop-filter: none;
        padding: 20px;
        gap: 0;
        transition: var(--transition);
        border-bottom: 1px solid var(--card-border);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
        padding: 15px 0;
        border-bottom: 1px solid var(--card-border);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

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

    .hero-slogan {
        font-size: 20px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    section {
        padding: 60px 0;
    }

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

    .about-hero-title {
        font-size: 28px;
    }

    .about-hero-date {
        font-size: 16px;
    }

    .slogan-highlight {
        font-size: 20px;
        padding: 10px 25px;
    }

    .intro-main p {
        font-size: 16px;
    }

    .intro-card {
        padding: 30px 20px;
    }

    .about-text p {
        font-size: 16px;
    }

    .feature-card,
    .product-card {
        padding: 30px 20px;
    }

    /* 产品卡片3列布局优化 */
    .product-card {
        padding: 15px 10px;
    }

    .product-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 12px;
    }

    .product-title {
        font-size: 14px;
        margin-bottom: 8px;
    }

    .product-description {
        font-size: 11px;
        line-height: 1.4;
        margin-bottom: 12px;
    }

    .product-features {
        gap: 6px;
    }

    .product-features li {
        font-size: 10px;
    }

    .featured-badge {
        font-size: 10px;
        padding: 3px 8px;
        top: 8px;
        right: 8px;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .qrcode-image {
        width: 180px;
    }

    .contact-form-wrapper {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

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

    .hero-slogan {
        font-size: 18px;
    }

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

    .about-hero-title {
        font-size: 24px;
    }

    .about-hero-date {
        font-size: 14px;
    }

    .slogan-highlight {
        font-size: 18px;
        padding: 8px 20px;
    }

    .intro-main p {
        font-size: 15px;
    }

    .intro-card {
        padding: 25px 15px;
    }

    .intro-card h3 {
        font-size: 20px;
    }

    .product-icon,
    .feature-icon {
        width: 60px;
        height: 60px;
    }

    .product-icon svg,
    .feature-icon svg {
        width: 32px;
        height: 32px;
    }

    .qrcode-image {
        width: 150px;
    }

    .contact-icon {
        width: 50px;
        height: 50px;
    }

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