/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 渐变主题色 */
:root {
    --primary-gradient: linear-gradient(135deg, #ff6b35 0%, #f7931e 50%, #4caf50 100%);
    --secondary-gradient: linear-gradient(135deg, #4caf50 0%, #8bc34a 100%);
    --orange: #ff6b35;
    --green: #4caf50;
    --dark: #2c3e50;
    --light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 1.8rem;
}

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

.nav-link {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link-login {
    background: var(--primary-gradient);
    color: var(--white);
    padding: 0.45rem 1.4rem;
    border-radius: 999px;
    box-shadow: var(--shadow);
    font-weight: 600;
}

.nav-link-login::after {
    display: none;
}

.nav-link-login:hover,
.nav-link-login:focus {
    color: var(--white);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.nav-link:hover:not(.nav-link-login) {
    color: var(--orange);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
}

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

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--dark);
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅 */
.hero {
    min-height: 100vh;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.2;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease 0.6s both;
}

.hero-placeholder {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-placeholder i {
    font-size: 4rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.hero-placeholder p {
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
}

/* 产品图片样式 */
.hero-product-image {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    background: transparent; /* 支持PNG透明背景 */
}

/* 图片优化样式 */
picture {
    display: block;
}

picture img {
    width: 100%;
    height: auto;
    transition: opacity 0.3s ease;
}

/* 图片加载状态 */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

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

.about-image img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.about-image img:hover {
    transform: translateY(-10px);
}

.product-image img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    border: 1px solid #eee;
}

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

/* APP截图样式 */
.app-screenshots {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.app-screenshot {
    width: 200px;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.app-screenshot:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

/* 章节标题 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: var(--light);
}

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

.about-text h3 {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}



.about-image {
    display: flex;
    justify-content: center;
}

.about-placeholder {
    background: var(--white);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.about-placeholder:hover {
    transform: translateY(-10px);
}

.about-placeholder i {
    font-size: 4rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.about-placeholder p {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
}

/* 产品与服务 */
.products {
    padding: 100px 0;
}

.product-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 6rem;
}

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

.product-item.reverse .product-content {
    direction: ltr;
}

.product-content h3 {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.product-content p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.product-features {
    list-style: none;
}

.product-features li {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: #555;
}

.product-features i {
    color: var(--green);
    margin-right: 1rem;
    font-size: 1.2rem;
}

.product-image {
    display: flex;
    justify-content: center;
}

.product-placeholder {
    background: var(--white);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    border: 1px solid #eee;
}

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

.product-placeholder i {
    font-size: 4rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.product-placeholder p {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
}

/* 效果展示 */
.demo {
    padding: 100px 0;
    background: var(--light);
}

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

.video-container {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.video-container:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.video-info {
    padding: 1.5rem;
    background: var(--white);
    border-bottom: 1px solid #eee;
}

.video-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.video-info p {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

.video-embed {
    position: relative;
    width: 100%;
    background: #000;
}

.video-embed iframe {
    display: block;
    width: 100%;
    height: 400px;
    border: none;
}

/* 服务对象 */
.services {
    padding: 100px 0;
    background: var(--light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid #f0f0f0;
    display: flex;
    flex-direction: column;
    position: relative;
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

/* 服务图标 */
.service-icon {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--white);
    z-index: 2;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

/* 不同服务对象的颜色主题 */
.service-card-1 .service-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.service-card-2 .service-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.service-card-3 .service-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.service-card-4 .service-icon {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.service-card-5 .service-icon {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.service-card-6 .service-icon {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
}

/* 图片展示区 */
.service-image {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
    background: #f5f5f5;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.service-card:hover .service-image img {
    transform: scale(1.1);
}

/* 服务内容 */
.service-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-content h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1.2rem;
    line-height: 1.3;
}

.service-description {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.service-description p {
    color: #555;
    line-height: 1.8;
    font-size: 1rem;
    margin: 0;
}

.service-description p strong {
    color: var(--dark);
    font-weight: 600;
    display: inline-block;
    min-width: 80px;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: var(--light);
}

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

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.so-easy-title {
    text-align: center;
    color: var(--dark);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.info-cards-container {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
}

.info-card {
    background: var(--white);
    border-radius: 15px;
    padding: 1.2rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    text-align: center;
    min-width: 180px;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.info-card-image {
    flex-shrink: 0;
    width: 120px;
    height: 180px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.info-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.info-card:hover .info-card-image img {
    transform: scale(1.1);
}

.info-card-content {
    flex: 1;
}

.info-card-content h4 {
    color: var(--dark);
    font-size: 1rem;
    margin-bottom: 0.3rem;
    font-weight: 600;
}

.info-card-content p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}



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

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

.contact-item i {
    font-size: 1.5rem;
    color: var(--orange);
    margin-top: 0.2rem;
}

.contact-item h4 {
    font-size: 1.2rem;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #666;
}

.contact-form {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    border: 2px solid #eee;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

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

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

/* 页脚 */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
    justify-content: center;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-section p {
    color: #bdc3c7;
    line-height: 1.6;
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--orange);
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: transform 0.3s ease;
}

.social-links a:hover {
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 2rem;
    text-align: center;
    color: #bdc3c7;
}

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

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

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }



    .product-item {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .demo-videos {
        grid-template-columns: 1fr;
    }
    
    .video-embed iframe {
        height: 300px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-info-cards {
        order: -1;
        margin-bottom: 2rem;
    }

    .so-easy-title {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .info-cards-container {
        flex-direction: column;
        gap: 1rem;
    }



    .info-card {
        padding: 0.8rem;
        text-align: center;
    }

    .info-card-image {
        width: 80px;
        height: 120px;
    }

    .info-card-content h4 {
        font-size: 0.9rem;
    }

    .info-card-content p {
        font-size: 0.85rem;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

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

    .nav-logo h2 {
        font-size: 1.5rem;
    }

    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

    .section-header h2 {
        font-size: 2.1rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    .about,
    .products,
    .demo,
    .services,
    .contact {
        padding: 70px 0;
    }

    .footer {
        padding: 50px 0 20px;
    }

    .footer-content {
        gap: 1.5rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .service-card {
        max-width: 100%;
    }

    .service-image {
        height: 240px;
    }

    .service-content {
        padding: 1.5rem;
    }

    .service-content h3 {
        font-size: 1.4rem;
    }

    .service-description {
        gap: 0.8rem;
    }

    .service-description p {
        font-size: 0.95rem;
        line-height: 1.7;
    }

    .service-description p strong {
        min-width: 70px;
    }

    .service-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        top: 1rem;
        right: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        max-width: 100%;
        padding: 0 1rem;
    }

    .login-hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .login-hero-content h1 {
        font-size: 2.4rem;
    }

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

    .login-hero-illustration {
        order: -1;
    }

    .support-card {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .login-interface {
        padding: 80px 0 60px;
    }

    .login-interface-grid {
        grid-template-columns: 1fr;
        gap: 1.6rem;
    }

    .interface-card {
        max-width: 420px;
        margin: 0 auto;
    }

    .interface-image img {
        height: 220px;
    }

    .interface-caption {
        padding: 1.3rem 1.4rem 1.6rem;
        text-align: left;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .login-main {
        padding-top: 90px;
    }

    .login-hero {
        padding: 100px 0 60px;
    }

    .login-hero-content h1 {
        font-size: 2rem;
    }

    .login-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .feature-card {
        padding: 2rem 1.5rem;
    }

    .support-card {
        padding: 2.2rem 1.5rem;
    }

    .interface-caption {
        padding: 1.3rem 1.4rem 1.5rem;
    }

    .interface-card {
        max-width: 100%;
    }

    .interface-image img {
        height: 200px;
    }

    .hero {
        padding: 110px 0 60px;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .about,
    .products,
    .demo,
    .services,
    .contact {
        padding: 60px 0;
    }

    .service-image {
        height: 200px;
    }

    .service-content {
        padding: 1.2rem;
    }

    .service-content h3 {
        font-size: 1.3rem;
    }

    .service-description {
        gap: 0.7rem;
    }

    .service-description p {
        font-size: 0.9rem;
        line-height: 1.7;
    }

    .service-description p strong {
        min-width: 60px;
        font-size: 0.9rem;
    }

    .service-icon {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
    }

    .section-header p {
        font-size: 0.95rem;
    }

    .app-step-card {
        gap: 1rem;
    }

    .app-step-summary {
        margin-top: 1.6rem;
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 版本信息样式 */
.version-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: #666;
}

.version-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.version-text span {
    font-weight: 500;
    color: #333;
}

@media (max-width: 768px) {
    .version-info {
        flex-direction: column;
        gap: 0.5rem;
        align-items: center;
    }
} 

.login-page {
    background: var(--light);
}

.login-main {
    padding-top: 110px;
}

.login-hero {
    background: var(--primary-gradient);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.login-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.05);
}

.login-hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.login-hero-content h1 {
    font-size: 3rem;
    color: var(--white);
    margin-bottom: 1.5rem;
}

.login-hero-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    color: var(--white);
    font-size: 0.85rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.login-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.login-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}

.login-hero-tip {
    margin-top: 1rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.login-hero-illustration picture,
.login-hero-illustration img {
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.login-features {
    padding: 100px 0;
    background: var(--white);
}

.login-interface {
    padding: 100px 0 80px;
    background: var(--light);
}

.login-interface-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2.5rem;
    align-items: stretch;
}

.interface-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #f0f0f0;
}

.interface-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.interface-image img {
    width: 100%;
    height: 280px;
    display: block;
    object-fit: cover;
}

.interface-caption {
    padding: 1.4rem 1.6rem 1.7rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.interface-caption h3 {
    font-size: 1.4rem;
    color: var(--dark);
    margin: 0;
}

.interface-caption p {
    color: #555;
    line-height: 1.7;
    margin: 0;
}

@media (max-width: 1180px) {
    .login-interface {
        padding: 90px 0 70px;
    }

    .login-interface-grid {
        grid-template-columns: minmax(0, 1fr);
        max-width: 820px;
        margin: 0 auto;
        gap: 2.2rem;
    }

    .interface-card {
        max-width: 620px;
        margin: 0 auto;
    }

    .interface-image img {
        height: 260px;
    }
}

@media (max-width: 900px) {
    .login-interface-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .interface-card {
        max-width: 100%;
    }

    .interface-image img {
        height: 240px;
    }
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--light);
    border-radius: 18px;
    padding: 2.5rem 2rem;
    text-align: left;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card i {
    font-size: 2rem;
    color: var(--orange);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.4rem;
    color: var(--dark);
    margin-bottom: 0.8rem;
}

.feature-card p {
    color: #555;
    line-height: 1.7;
}

.feature-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-hover);
}

.login-support {
    padding: 100px 0;
    background: var(--light);
}

.support-card {
    background: var(--white);
    border-radius: 24px;
    padding: 3rem;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
    box-shadow: var(--shadow);
    align-items: center;
}

.support-content h2 {
    font-size: 2.2rem;
    color: var(--dark);
    margin-bottom: 1rem;
}

.support-content p {
    color: #555;
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.support-list {
    list-style: none;
    display: grid;
    gap: 0.8rem;
    color: #444;
    font-size: 1rem;
}

.support-list li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.support-list i {
    color: var(--green);
    font-size: 1.1rem;
}

.support-cta {
    background: var(--primary-gradient);
    padding: 2.5rem;
    border-radius: 18px;
    color: var(--white);
    box-shadow: var(--shadow);
}

.support-cta h3 {
    font-size: 1.7rem;
    margin-bottom: 1rem;
}

.support-cta p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.support-cta .btn {
    background: var(--white);
    color: var(--orange);
    font-weight: 600;
}

.support-cta .btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}