/* 全局样式 */
:root {
    --primary-color: #42a5ff; /* 亮蓝色 */
    --secondary-color: #64b5f6;
    --accent-color: #1976d2;
    --text-color: #333;
    --light-text: #666;
    --bg-color: #fff;
    --light-bg: #f5f8ff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--text-color);
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* 头部导航 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 15px 0;
}

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

.logo h1 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 5px;
}

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

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a:hover::after {
    width: 100%;
}

/* 英雄区域 */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f8ff 0%, #e8f0fe 100%);
}

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

.hero-content {
    flex: 1;
    padding-right: 50px;
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

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

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--light-text);
}

/* 功能特点 */
.features {
    padding: 100px 0;
    background-color: var(--bg-color);
}

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

.contact-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 30px;
}

.contact-card {
    background-color: var(--bg-color);
    border-radius: 10px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-10px);
}

.contact-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.contact-card p {
    color: var(--light-text);
    margin-bottom: 20px;
    min-height: 50px;
}

.contact-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.contact-btn:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.feature-card p {
    color: var(--light-text);
}

/* 产品优势 */
.advantages {
    padding: 100px 0;
    background-color: #f0f7ff;
}

.advantage-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.advantage-item {
    display: flex;
    align-items: center;
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    border-left: 5px solid var(--primary-color);
}

.advantage-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.2;
    margin-right: 30px;
    min-width: 80px;
    text-align: center;
}

.advantage-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.advantage-content p {
    color: var(--light-text);
}

/* 支持平台 */
.platforms {
    padding: 100px 0;
    background-color: var(--bg-color);
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.platform-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.platform-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.platform-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.platform-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.download-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--text-color);
    padding: 8px 20px;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
}

/* 联系我们和价格方案 */
.contact, #pricing {
    padding: 100px 0;
    background-color: #f0f7ff;
}

/* 价格方案 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.pricing-card {
    background-color: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.pricing-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    position: relative;
    z-index: 1;
    box-shadow: 0 10px 30px rgba(33, 150, 243, 0.2);
}

.pricing-card.featured::before {
    content: "推荐";
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 5px 15px;
    font-size: 0.8rem;
    border-radius: 20px;
    font-weight: bold;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-header {
    padding: 30px 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    background-color: #f8faff;
    position: relative;
}

.pricing-header::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--border-color);
    border-radius: 3px;
}

.pricing-card.featured .pricing-header {
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f0fe 100%);
}

.pricing-card.featured .pricing-header::after {
    background-color: var(--primary-color);
    width: 80px;
}

.pricing-header h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.pricing-price {
    margin: 25px 0;
    position: relative;
    display: inline-block;
}

.pricing-price .price {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-color);
    display: inline-block;
    position: relative;
}

.pricing-price .price::before {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 8px;
    background-color: rgba(33, 150, 243, 0.1);
    z-index: -1;
    border-radius: 4px;
}

.pricing-card.featured .pricing-price .price::before {
    background-color: rgba(33, 150, 243, 0.2);
}

.pricing-price .period {
    font-size: 1rem;
    color: var(--light-text);
    margin-left: 5px;
}

.pricing-users {
    font-size: 0.9rem;
    color: var(--light-text);
    margin-top: 10px;
}

.pricing-features {
    padding: 25px 20px;
    flex-grow: 1;
}

.pricing-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pricing-features ul li {
    padding: 12px 0;
    border-bottom: 1px dashed var(--border-color);
    color: var(--text-color);
    display: flex;
    align-items: center;
    font-size: 0.95rem;
}

.pricing-features ul li:last-child {
    border-bottom: none;
}

.pricing-features ul li i {
    color: var(--primary-color);
    margin-right: 12px;
    font-size: 1rem;
    background-color: rgba(33, 150, 243, 0.1);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-card.featured .pricing-features ul li i {
    background-color: rgba(33, 150, 243, 0.2);
}

.pricing-card .btn {
    margin: 0 20px 30px;
    padding: 12px 0;
    width: calc(100% - 40px);
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.pricing-card.featured .btn {
    box-shadow: 0 8px 15px rgba(33, 150, 243, 0.2);
}

.pricing-custom {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 25px 0;
    position: relative;
}

.pricing-custom i {
    font-size: 3.2rem;
    color: var(--primary-color);
    margin-bottom: 18px;
    background-color: rgba(33, 150, 243, 0.1);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(33, 150, 243, 0.1);
}

.pricing-custom p {
    font-size: 1.2rem;
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding-bottom: 10px;
}

.pricing-custom p::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* 购买流程样式 */
.purchase-process {
    margin: 60px 0;
    text-align: center;
}

.process-title {
    font-size: 28px;
    font-weight: 600;
    color: #333;
    margin-bottom: 50px;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 8.33%;
    right: 8.33%;
    height: 2px;
    background: linear-gradient(to right, var(--primary-color), #e0e0e0);
    z-index: 1;
}

.process-step {
    flex: 1;
    max-width: 180px;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
    position: relative;
    z-index: 3;
}

.step-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

.step-icon i {
    font-size: 32px;
    color: var(--primary-color);
}

.step-content h4 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
}

.step-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
    margin: 0;
}

.process-step:hover .step-icon {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.process-step:hover .step-icon i {
    color: white;
}

/* 购买流程响应式设计 */
@media (max-width: 1024px) {
    .process-steps {
        flex-wrap: wrap;
        gap: 40px;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .process-step {
        flex: 0 0 calc(33.333% - 27px);
        max-width: none;
    }
}

@media (max-width: 768px) {
    .process-step {
        flex: 0 0 calc(50% - 20px);
    }
    
    .process-title {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .process-step {
        flex: 0 0 100%;
    }
    
    .purchase-process {
        margin: 40px 0;
    }
    
    .process-title {
        font-size: 20px;
        margin-bottom: 30px;
    }
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.contact-item {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    border-top: 5px solid var(--primary-color);
}

.contact-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact-item h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.contact-item p {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.2rem;
}

.contact-form {
    background-color: white;
    border-radius: 10px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--primary-color);
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

/* 页脚 */
footer {
    background-color: #f0f5ff;
    color: var(--text-color);
    padding: 80px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.footer-logo h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.footer-logo p {
    color: var(--light-text);
}

.footer-links {
    display: flex;
    gap: 50px;
    flex-wrap: wrap;
}

.footer-link-group h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.footer-link-group ul li {
    margin-bottom: 10px;
}

.footer-link-group ul li a {
    color: var(--light-text);
    transition: all 0.3s ease;
}

.footer-link-group ul li a:hover {
    color: var(--text-color);
    padding-left: 5px;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    text-align: center;
    font-size: 13px;
    color: #666;
}

.footer-logo-small {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.footer-logo-small img {
    width: 24px;
    height: 24px;
    margin-right: 10px;
}

.footer-logo-small span {
    color: var(--text-color);
    font-size: 16px;
    font-weight: 500;
}

.footer-links-small {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
}

.footer-links-small a {
    color: var(--light-text);
    font-size: 14px;
    transition: color 0.3s;
}

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

.footer-copyright p {
    color: var(--light-text);
    font-size: 12px;
    margin-bottom: 10px;
}

.footer-icp {
    margin-bottom: 15px;
    font-size: 12px;
}

.footer-icp a {
    color: var(--light-text);
    font-size: 12px;
    margin: 0 5px;
    transition: color 0.3s;
    display: inline-flex;
    align-items: center;
}

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

.footer-social a {
    color: var(--light-text);
    font-size: 12px;
    margin: 0 5px;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
    }

    .hero-content {
        padding-right: 0;
        margin-bottom: 50px;
        text-align: center;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-logo {
        margin-bottom: 30px;
    }

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

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }

    .logo {
        margin-bottom: 20px;
        text-align: center;
    }

    nav ul {
        justify-content: center;
    }

    nav ul li {
        margin: 0 15px;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero h2 {
        font-size: 2.5rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-links-small {
        flex-direction: column;
        gap: 10px;
    }

    .footer-icp {
        margin-bottom: 20px;
    }

    .footer-social a {
        margin: 0 10px;
    }
}

@media (max-width: 992px) {
    .contact-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .feature-grid,
    .platform-grid,
    .contact-info,
    .pricing-grid,
    .contact-cards {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-10px);
    }

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

    .hero p {
        font-size: 1rem;
    }

    .footer-links {
        flex-direction: column;
    }
}

.btn-start {
    background: linear-gradient(90deg, #16c0a0 0%, #2de2e6 100%) !important;
    color: #fff !important;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 8px;
    padding: 10px 28px;
    min-width: unset;
    text-align: center;
    box-shadow: 0 4px 16px rgba(44, 213, 196, 0.10);
    border: none;
    transition: filter 0.2s;
}
.btn-start:hover {
    filter: brightness(1.08);
}