/* 全局样式 */
:root {
    --primary-color: #e74c3c;
    --secondary-color: #2c3e50;
    --accent-color: #f1c40f;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

/* 导航栏样式 */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo span {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* 主要内容区域 */
.main-content {
    margin-top: 80px;
    padding: 2rem 1rem;
}

/* 英雄区域 */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    min-height: 60vh;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.hero-icon {
    font-size: 4rem;
    margin-bottom: 2rem;
    color: var(--white);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
    margin: 0.5rem;
}

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

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

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 特色区域样式 */
.features-section {
    padding: 5rem 2rem;
    background-color: var(--light-bg);
}

.features-section h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* 入驻区域样式 */
.join-section {
    padding: 5rem 2rem;
}

.join-section h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.join-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.join-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.join-text ul {
    list-style: none;
    margin-bottom: 2rem;
}

.join-text li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.join-text i {
    color: var(--primary-color);
}

.info-card {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.info-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.info-card ol {
    list-style: none;
    counter-reset: step-counter;
}

.info-card li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.info-card li i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* 页脚样式 */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    padding: 3rem 2rem 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.social-links a {
    color: var(--white);
    font-size: 1.5rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--accent-color);
}

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

.icp {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.icp a {
    color: var(--white);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.icp img {
    max-width: 20px;
    max-height: 20px;
    width: auto;
    height: auto;
    vertical-align: middle;
    display: inline-block;
}

/* 二维码弹窗 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    position: relative;
    max-width: 90%;
    width: 300px;
}

.close {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

.qrcode-container {
    margin-top: 1.5rem;
}

.qrcode-container img {
    width: 200px;
    height: 200px;
    margin-bottom: 1rem;
}

.qrcode-container p {
    color: var(--text-color);
    font-size: 1.1rem;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow);
    }
    .nav-menu.show {
        display: flex;
    }
    .nav-menu li {
        margin: 0.5rem 0;
    }
    .hero-content h1 {
        font-size: 2rem;
    }
    .hero-content p {
        font-size: 1rem;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .social-links {
        justify-content: center;
    }
}

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

.feature-card {
    animation: fadeIn 0.5s ease-out;
}

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

@media (hover: none) {
    .feature-card:hover {
        transform: none;
    }
    .nav-menu a:active {
        color: var(--primary-color);
    }
    .join-button:active {
        background: #c0392b;
    }
}