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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

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

/* 导航栏样式 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled .nav-logo span {
    color: #2c5aa0;
}

.navbar.scrolled .nav-link {
    color: #333;
}

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

.nav-logo span {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

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

.nav-link:hover,
.nav-link.active {
    color: #ffd700;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ffd700;
    transition: width 0.3s ease;
}

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

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

.btn-primary {
    background: linear-gradient(135deg, #ff6b6b, #ffa500);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
}

/* 主要banner区域 */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 120px 0 80px;
    color: white;
    overflow: hidden;
    position: relative;
}

.hero-section::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="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)" /></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    background: linear-gradient(135deg, #fff, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.8;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b6b, #ffa500);
    color: white;
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 107, 107, 0.4);
}

/* 3D视觉效果 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
    position: relative;
}

.visual-container {
    position: relative;
    width: 300px;
    height: 300px;
}

.platform {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 280px;
    height: 50px;
    perspective: 1000px;
}

.platform-surface {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    border-radius: 50%;
    transform: rotateX(75deg);
    box-shadow: 0 0 50px rgba(79, 172, 254, 0.3);
    animation: platformFloat 3s ease-in-out infinite;
}

.central-character {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
}

.character-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    animation: characterBounce 2s ease-in-out infinite;
}

.character-avatar i {
    font-size: 2rem;
    color: white;
}

.floating-element {
    position: absolute;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ff9a9e, #fecfef);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(255, 154, 158, 0.3);
    animation: float 4s ease-in-out infinite;
}

.floating-element i {
    font-size: 1.5rem;
    color: white;
}

.element-1 {
    top: 20px;
    left: 20px;
    animation-delay: 0s;
}

.element-2 {
    top: 20px;
    right: 20px;
    animation-delay: 1s;
}

.element-3 {
    bottom: 80px;
    left: 20px;
    animation-delay: 2s;
}

.element-4 {
    bottom: 80px;
    right: 20px;
    animation-delay: 3s;
}

/* 产品分类 */
.product-categories {
    padding: 80px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.category-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.category-card:hover .category-icon {
    transform: scale(1.1);
}

.category-icon i {
    font-size: 2rem;
    color: white;
}

.category-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2d3748;
}

.category-card p {
    color: #718096;
    line-height: 1.8;
}

/* 热门产品和编程展示 */
.featured-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

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

.popular-products h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.product-list {
    margin-bottom: 2rem;
}

.product-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.product-item:hover {
    transform: translateX(10px);
}

.product-item i {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.view-more-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 1rem 2rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.view-more-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* 编程视觉效果 */
.coding-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.code-window {
    background: #1a1a1a;
    border-radius: 15px;
    padding: 0;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    width: 350px;
}

.window-header {
    background: #2d2d2d;
    padding: 1rem;
    display: flex;
    align-items: center;
}

.window-controls {
    display: flex;
    gap: 0.5rem;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.red {
    background: #ff5f56;
}

.control.yellow {
    background: #ffbd2e;
}

.control.green {
    background: #27ca3f;
}

.code-content {
    padding: 1.5rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.code-line {
    margin-bottom: 0.5rem;
}

.code-line.indent {
    padding-left: 2rem;
}

.keyword {
    color: #ff79c6;
}

.function {
    color: #50fa7b;
}

.comment {
    color: #6272a4;
}

.variable {
    color: #8be9fd;
}

.method {
    color: #50fa7b;
}

.string {
    color: #f1fa8c;
}

.programmer-avatar {
    position: absolute;
    bottom: -20px;
    right: -20px;
}

.avatar-circle {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    border: 4px solid rgba(255, 255, 255, 0.2);
}

.avatar-circle i {
    font-size: 2.5rem;
    color: white;
}

/* 热门推荐 */
.recommendations {
    padding: 80px 0;
    background: white;
}

.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.recommendation-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.recommendation-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.card-image {
    position: relative;
    background: linear-gradient(135deg, #667eea, #764ba2);
    padding: 3rem 2rem;
    text-align: center;
    color: white;
}

.service-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.service-icon i {
    font-size: 2rem;
}

.service-badge {
    background: rgba(255, 255, 255, 0.9);
    color: #667eea;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    display: inline-block;
}

.card-content {
    padding: 2rem;
}

.card-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2d3748;
}

.card-content p {
    color: #718096;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.learn-more {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.learn-more:hover {
    color: #764ba2;
}

.rating {
    color: #ffd700;
}

/* 页脚 */
.footer {
    background: #2d3748;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #ffd700;
}

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

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

.footer-section ul li a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ffd700;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: #667eea;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #ffd700;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #4a5568;
    color: #a0aec0;
}

/* 动画效果 */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes characterBounce {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
    }
}

@keyframes platformFloat {
    0%, 100% {
        transform: rotateX(75deg) translateY(0px);
    }
    50% {
        transform: rotateX(75deg) translateY(-10px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .featured-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .recommendations-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .code-window {
        width: 280px;
    }
    
    .visual-container {
        width: 250px;
        height: 250px;
    }
}

/* JavaScript 相关样式 */

/* 移动端导航切换 */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #fff;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(44, 90, 160, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: left 0.3s ease;
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu .nav-link {
        padding: 1rem 2rem;
        font-size: 1.1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        width: 100%;
        text-align: center;
    }
}

/* 模态框样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #fff;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(-50px);
    transition: transform 0.3s ease;
}

.modal-overlay.show .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: 1.5rem 2rem 1rem;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    justify-content: between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: #333;
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #6c757d;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: #f8f9fa;
    color: #333;
}

.modal-body {
    padding: 1rem 2rem 2rem;
}

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

.consult-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.consult-form input,
.consult-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 0.9rem;
    transition: border-color 0.2s ease;
}

.consult-form input:focus,
.consult-form textarea:focus {
    outline: none;
    border-color: #2c5aa0;
}

.consult-form input.error,
.consult-form textarea.error {
    border-color: #dc3545;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

.modal-cancel {
    padding: 0.75rem 1.5rem;
    background: #f8f9fa;
    color: #6c757d;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-cancel:hover {
    background: #e9ecef;
    color: #495057;
}

/* 消息提示样式 */
.message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #fff;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 1rem 1.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 400px;
    z-index: 1001;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.message.show {
    transform: translateX(0);
}

.message-success {
    border-left: 4px solid #28a745;
}

.message-error {
    border-left: 4px solid #dc3545;
}

.message-info {
    border-left: 4px solid #17a2b8;
}

.message-success i {
    color: #28a745;
}

.message-error i {
    color: #dc3545;
}

.message-info i {
    color: #17a2b8;
}

.message button {
    background: none;
    border: none;
    color: #6c757d;
    cursor: pointer;
    padding: 0;
    margin-left: auto;
    font-size: 0.9rem;
}

.message button:hover {
    color: #495057;
}

/* 用户菜单样式 */
.user-menu {
    position: absolute;
    background: #fff;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 0.5rem 0;
    min-width: 150px;
    z-index: 1000;
}

.user-menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: #333;
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.user-menu a:hover {
    background: #f8f9fa;
}

/* 页面加载器 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

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

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #2c5aa0;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 动画效果 */
.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

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

/* 浮动元素动画 */
.floating-element {
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* 保存草稿提示 */
.save-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #28a745;
    color: #fff;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(100px);
    transition: transform 0.3s ease;
    z-index: 1000;
}

.save-indicator.show {
    transform: translateY(0);
}

/* 恢复草稿按钮 */
.restore-draft-btn {
    margin-bottom: 1rem;
    background: #17a2b8;
    color: #fff;
    border: 1px solid #17a2b8;
}

.restore-draft-btn:hover {
    background: #138496;
    border-color: #117a8b;
}

/* 结果计数 */
.results-count {
    margin: 1rem 0;
    color: #6c757d;
    font-size: 0.9rem;
}

/* 密码强度指示器 */
.password-strength {
    margin-top: 0.5rem;
}

.strength-progress {
    height: 4px;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.strength-progress.weak {
    background: #dc3545;
}

.strength-progress.medium {
    background: #ffc107;
}

.strength-progress.strong {
    background: #28a745;
}

.strength-text {
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: block;
}

.strength-text.weak {
    color: #dc3545;
}

.strength-text.medium {
    color: #ffc107;
}

.strength-text.strong {
    color: #28a745;
}

.strength-feedback {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0;
    font-size: 0.8rem;
    color: #6c757d;
}

.strength-feedback li {
    margin-bottom: 0.25rem;
}

/* 响应式优化 */
@media (max-width: 576px) {
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .modal-header,
    .modal-body {
        padding: 1rem;
    }
    
    .message {
        right: 10px;
        left: 10px;
        max-width: none;
    }
    
    .save-indicator {
        right: 10px;
        bottom: 10px;
    }
}