/* 全局样式和变量 */
:root {
    --primary-color: #2196F3;
    --secondary-color: #4CAF50;
    --text-color: #333333;
    --light-text: #666666;
    --background-color: #ffffff;
    --light-background: #f5f5f5;
    --border-color: #e0e0e0;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

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

/* 通用样式 */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    line-height: 1.2;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
}

.btn-primary:hover {
    background-color: #1976D2;
    color: white;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
    border: none;
}

.btn-secondary:hover {
    background-color: #388E3C;
    color: white;
    transform: translateY(-2px);
}

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

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

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--light-text);
    font-size: 1.1rem;
}

/* 导航栏样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: white;
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 1rem 0;
}

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

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

.logo h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin: 0;
}

.logo p {
    font-size: 0.9rem;
    color: var(--light-text);
    margin: 0;
}

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

nav a {
    color: var(--text-color);
    font-weight: 500;
}

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

.btn-contact {
    background-color: var(--primary-color);
    color: white !important;
    padding: 8px 16px;
    border-radius: 4px;
}

.btn-contact:hover {
    background-color: #1976D2;
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 首页横幅样式 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

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

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.hero-qrcode-container {
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
    animation: float 3s ease-in-out infinite;
    margin: 0 auto;
    max-width: 500px;
    width: 100%;
}

.hero-qrcode-centered {
    display: flex;
    justify-content: center;
    align-items: center;
    transform: none;
}

.hero-qrcode-centered .qrcode-overlay {
    padding: 30px;
    gap: 30px;
    width: 100%;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    position: relative;
    overflow: hidden;
    animation: pulse-border 3s infinite;
}

.hero-qrcode-centered .qrcode-overlay::before {
    content: "";
    position: absolute;
    top: -30px;
    right: -30px;
    width: 120px;
    height: 120px;
    background: var(--primary-color);
    opacity: 0.1;
    border-radius: 50%;
    z-index: 0;
}

.hero-qrcode-centered .qrcode-overlay::after {
    content: "";
    position: absolute;
    bottom: -20px;
    left: -20px;
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    opacity: 0.1;
    border-radius: 50%;
    z-index: 0;
}

@keyframes pulse-border {
    0% {
        box-shadow: 0 0 0 0 rgba(var(--primary-rgb, 74, 144, 226), 0.4), 0 15px 35px rgba(0, 0, 0, 0.1);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(var(--primary-rgb, 74, 144, 226), 0), 0 15px 35px rgba(0, 0, 0, 0.1);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(var(--primary-rgb, 74, 144, 226), 0), 0 15px 35px rgba(0, 0, 0, 0.1);
    }
}

.hero-qrcode-centered .hero-qrcode-img {
    width: 180px;
    height: 180px;
}

.hero-qrcode-centered .qrcode-text h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.hero-qrcode-centered .qrcode-text p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.hero-qrcode-centered .qrcode-badge {
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: 500;
}

@keyframes float {
    0% {
        transform: rotate(5deg) translateY(0px);
    }
    50% {
        transform: rotate(3deg) translateY(-10px);
    }
    100% {
        transform: rotate(5deg) translateY(0px);
    }
}

.hero-qrcode-container:hover {
    transform: rotate(0) scale(1.05);
    animation-play-state: paused;
}

.qrcode-badge {
    background: var(--primary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: 5px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(var(--primary-rgb), 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(var(--primary-rgb), 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(var(--primary-rgb), 0);
    }
}

.qrcode-overlay {
    background: white;
    padding: 25px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 25px;
    border: 3px solid var(--primary-color);
    position: relative;
    overflow: hidden;
    max-width: 100%;
}

.qrcode-overlay:before {
    content: "";
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100px;
    height: 100px;
    background: var(--primary-color);
    transform: rotate(45deg);
    z-index: -1;
}

.hero-qrcode-img {
    width: 150px;
    height: 150px;
    border-radius: 10px;
    border: 2px solid var(--primary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.hero-qrcode-centered .qrcode-overlay {
    animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
    0% {
        box-shadow: 0 0 0 0 rgba(var(--primary-rgb, 74, 144, 226), 0.7), 0 15px 35px rgba(0, 0, 0, 0.2);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(var(--primary-rgb, 74, 144, 226), 0), 0 15px 35px rgba(0, 0, 0, 0.2);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(var(--primary-rgb, 74, 144, 226), 0), 0 15px 35px rgba(0, 0, 0, 0.2);
    }
}

.qrcode-text {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.qrcode-text h4 {
    font-size: 1.1rem;
    margin: 0;
    color: var(--text-color);
}

.qrcode-text p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--light-text);
}

.qrcode-badge {
    background: var(--primary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: 5px;
}

.qrcode-badge i {
    font-size: 0.9rem;
}

/* 服务介绍样式 */
.services {
    padding: 80px 0;
    background-color: var(--light-background);
}

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

.service-item {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-item h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
}

.service-item p {
    color: var(--light-text);
}

/* 案例展示样式 */
.cases {
    padding: 80px 0;
}

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

.case-item {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.case-image img {
    width: 100%;
    /* height: 200px; */
    object-fit: cover;
}

.case-content {
    padding: 1.5rem;
}

.case-content h3 {
    margin-bottom: 0.5rem;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.case-tags span {
    background: var(--light-background);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--light-text);
}

/* 产品特点样式 */
.features {
    padding: 80px 0;
    background-color: var(--light-background);
}

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

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.feature-content h3 {
    margin-bottom: 0.5rem;
}

/* 新增产品特点图片样式 */
.feature-image-container {
    display: flex;
    justify-content: center;
    margin: 2rem 0;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-image-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.feature-description {
    text-align: center;
    margin-top: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.feature-description p {
    font-size: 1.1rem;
    color: var(--light-text);
    line-height: 1.8;
}

/* 关于我们样式 */
.about {
    padding: 80px 0;
}

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

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.about-list {
    list-style: none;
    margin-top: 1.5rem;
}

.about-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.about-list i {
    color: var(--secondary-color);
}

/* 联系我们样式 */
.contact {
    padding: 80px 0;
    background-color: var(--light-background);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

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

.contact-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.contact-detail h3 {
    margin-bottom: 0.5rem;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    margin-bottom: 1.5rem;
    text-align: center;
}

/* 美化联系我们部分 */
.contact-content.centered {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 0;
}

.contact-qrcode-premium {
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 500px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-qrcode-premium:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.contact-qrcode-premium h3 {
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.8rem;
    font-weight: 600;
    color: #333;
    position: relative;
    padding-bottom: 1rem;
}

.contact-qrcode-premium h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
}

.qrcode-container {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.qrcode-img {
    width: 220px;
    height: 220px;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.qrcode-img:hover {
    transform: scale(1.02);
}

.qrcode-tips {
    text-align: left;
    margin-top: 2rem;
    background: rgba(255, 255, 255, 0.7);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.03);
}

.qrcode-tips p {
    margin-bottom: 1rem;
    color: #555;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.05rem;
    transition: transform 0.2s ease;
}

.qrcode-tips p:hover {
    transform: translateX(5px);
}

.qrcode-tips i {
    color: var(--primary-color);
    font-size: 1.2rem;
    width: 25px;
    height: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--primary-rgb), 0.1);
    border-radius: 50%;
    padding: 5px;
}

/* 全局美化提升档次 */
:root {
    --primary-rgb: 0, 123, 255;
    --secondary-rgb: 108, 117, 125;
}

.section-header h2 {
    position: relative;
    padding-bottom: 1rem;
}

.section-header h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
}

.btn {
    border-radius: 30px;
    padding: 0.8rem 1.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    border: none;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), #495057);
    border: none;
}

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

.btn-outline:hover {
    background: rgba(var(--primary-rgb), 0.1);
}

/* 美化服务项目卡片 */
.service-item, .feature-item, .case-item {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 12px;
    overflow: hidden;
}

.service-item:hover, .feature-item:hover, .case-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* 美化图标 */
.service-icon, .feature-icon, .contact-icon {
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1), rgba(var(--secondary-rgb), 0.1));
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.service-icon i, .feature-icon i, .contact-icon i {
    font-size: 2rem;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.service-item:hover .service-icon,
.feature-item:hover .feature-icon {
    transform: rotateY(180deg);
}

.service-item:hover .service-icon i,
.feature-item:hover .feature-icon i {
    transform: rotateY(180deg);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-block {
    width: 100%;
}

/* 页脚样式 */
footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-logo h2 {
    color: white;
    margin-bottom: 0.5rem;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-link-group h3 {
    color: white;
    margin-bottom: 1rem;
}

.footer-link-group ul {
    list-style: none;
}

.footer-link-group ul li {
    margin-bottom: 0.5rem;
}

.footer-link-group a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-link-group a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
}

.qrcode {
    text-align: center;
}

.qrcode img {
    width: 120px;
    height: 120px;
    margin-bottom: 0.5rem;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
}

/* 功能特点详细样式 */
.features-detailed {
    margin-top: 4rem;
}

.features-subtitle {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.feature-section {
    margin-bottom: 4rem;
}

.feature-section-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.feature-section-title i {
    color: var(--primary-color);
    font-size: 1.8rem;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.feature-card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1), rgba(var(--secondary-rgb), 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-card-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.feature-card h5 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-card ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.feature-card ul li {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--light-text);
}

.feature-card ul li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

.feature-cta {
    text-align: center;
    margin-top: 4rem;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.feature-cta p {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.feature-cta .btn {
    margin: 0 0.5rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content h2 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow);
    }

    nav ul.active {
        display: flex;
    }

    .hero .container,
    .about-content,
    .contact-content,
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero {
        padding: 100px 0 40px;
    }

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

    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        padding: 1rem;
    }
    
    .hero-qrcode-container {
        margin-top: 20px;
        transform: none;
        animation: none;
    }
    
    .qrcode-overlay {
        flex-direction: column;
        text-align: center;
        padding: 20px;
        gap: 15px;
    }
    
    .hero-qrcode-centered .hero-qrcode-img {
        width: 160px;
        height: 160px;
        margin: 0 auto;
    }
    
    .hero-qrcode-centered .qrcode-text {
        align-items: center;
    }
    
    .hero-qrcode-centered .qrcode-text h4 {
        font-size: 1.3rem;
    }
    
    .hero-qrcode-centered .qrcode-text p {
        font-size: 1rem;
    }
    
    .hero-qrcode-centered .qrcode-badge {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .hero-qrcode-centered .hero-qrcode-img {
        width: 140px;
        height: 140px;
    }
    
    .qrcode-overlay {
        padding: 15px;
    }
    
    .hero-qrcode-centered .qrcode-text h4 {
        font-size: 1.2rem;
    }
    
    .hero-qrcode-centered .qrcode-badge {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .section-header h2 {
        font-size: 2rem;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* 占位图样式 */
.placeholder-img {
    background-color: #e0e0e0;
    min-height: 100px;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate {
    animation: fadeIn 0.6s ease-out forwards;
}