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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --accent: #10b981;
    --bg: #f8fafc;
    --bg-dark: #0f172a;
    --text: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --radius: 12px;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

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

/* 导航栏 */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 70px;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--secondary);
    font-size: 1.5rem;
    font-weight: 700;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* 英雄区 */
.hero {
    background: linear-gradient(135deg, var(--secondary) 0%, #1e293b 100%);
    color: var(--white);
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

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

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-light);
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
}

/* 功能特色 */
.features {
    padding: 80px 0;
    background: var(--white);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--secondary);
}

.section-desc {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.feature-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 30px;
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
    background: var(--white);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

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

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--secondary);
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 统计数据 */
.stats-section {
    background: var(--bg);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-card i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.stat-card .number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 5px;
}

.stat-card .label {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 快速开始 */
.quick-start {
    padding: 80px 0;
    background: var(--white);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.step {
    text-align: center;
    padding: 30px;
    border-radius: var(--radius);
    background: var(--bg);
    transition: var(--transition);
}

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

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.step h3 {
    margin-bottom: 10px;
    color: var(--secondary);
}

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

/* 页脚 */
.footer {
    background: var(--secondary);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-col p {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

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

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

.footer-col ul li a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

.footer-col ul li a:hover {
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    color: rgba(255,255,255,0.4);
    font-size: 0.85rem;
}

/* 管理后台登录 */
.admin-login-page {
    background: linear-gradient(135deg, var(--secondary), #1e293b);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-box {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.login-header h2 {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 5px;
}

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

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

.login-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text);
    font-size: 0.9rem;
}

.login-form label i {
    margin-right: 5px;
    color: var(--primary);
}

.login-form input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.btn-block {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 1rem;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
}

.login-footer a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.alert {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.alert-error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

/* 管理后台页面 */
.admin-page {
    background: var(--bg);
    padding-top: 70px;
}

.admin-nav {
    background: var(--secondary);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 60px;
}

.admin-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.admin-nav .logo {
    color: var(--white);
}

.admin-nav .logo i {
    color: var(--primary-light);
}

.admin-nav-right .btn {
    padding: 8px 20px;
    background: rgba(255,255,255,0.1);
    color: var(--white);
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.admin-nav-right .btn:hover {
    background: rgba(255,255,255,0.2);
}

.admin-content {
    padding: 40px 0;
}

.admin-content h1 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--secondary);
}

.admin-section {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

.admin-section h2 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-section h3 {
    font-size: 1.1rem;
    margin: 25px 0 15px;
    color: var(--secondary);
}

.admin-form {
    max-width: 800px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.85rem;
}

.btn-danger {
    background: #dc2626;
    color: var(--white);
}

.btn-danger:hover {
    background: #b91c1c;
}

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

.btn-success:hover {
    background: #059669;
}

.feature-list {
    margin-bottom: 20px;
}

.feature-item {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 15px;
}

/* 内页通用样式 */
.page-hero {
    background: linear-gradient(135deg, var(--secondary), #1e293b);
    color: var(--white);
    padding: 120px 0 60px;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 15px;
}

.page-hero p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: 60px 0;
}

/* 插件市场 */
.plugins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.plugin-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid transparent;
}

.plugin-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.plugin-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.plugin-header i {
    font-size: 2rem;
    color: var(--primary);
    width: 50px;
    height: 50px;
    background: var(--bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.plugin-header h3 {
    font-size: 1.1rem;
    color: var(--secondary);
}

.plugin-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.plugin-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #e2e8f0;
}

.plugin-meta span {
    font-size: 0.85rem;
    color: var(--text-light);
}

.plugin-meta .downloads i {
    margin-right: 5px;
}

/* 价格方案 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    align-items: start;
}

.pricing-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 35px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.05);
}

.pricing-card.featured .badge {
    position: absolute;
    top: 15px;
    right: -30px;
    background: var(--primary);
    color: var(--white);
    padding: 5px 40px;
    font-size: 0.8rem;
    transform: rotate(45deg);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.pricing-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--secondary);
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 20px;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-light);
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 25px;
}

.pricing-card ul li {
    padding: 8px 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.pricing-card ul li i {
    color: var(--accent);
    margin-right: 8px;
}

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

/* 帮助文档 */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.doc-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.doc-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.doc-card h3 {
    font-size: 1.1rem;
    color: var(--secondary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.doc-card h3 i {
    color: var(--primary);
}

.doc-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.doc-card a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
}

.doc-card a:hover {
    text-decoration: underline;
}

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

    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        gap: 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        margin: 0;
    }

    .nav-menu a {
        padding: 12px 0;
        border-bottom: 1px solid #e2e8f0;
    }

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

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

    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: none;
    }

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

    .page-hero h1 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .features-grid,
    .plugins-grid,
    .pricing-grid,
    .docs-grid {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: 1.6rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}