/* Candaigo品牌样式 - SEO静态页面 */

:root {
    --primary-color: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #818CF8;
    --secondary-color: #10B981;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-light: #94A3B8;
    --bg-white: #FFFFFF;
    --bg-gray: #F8FAFC;
    --bg-dark: #0F172A;
    --border-color: #E2E8F0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-gray);
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #8B5CF6 100%);
    color: white;
    padding: 20px 0;
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    color: white;
}

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

.nav-links {
    display: flex;
    gap: 24px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
    display: block;
    padding: 8px 0;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* 下拉菜单样式 */
.nav-item-dropdown {
    position: relative;
    display: inline-block;
}

.dropbtn {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
}

.arrow {
    font-size: 10px;
    transition: transform 0.3s;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: white;
    min-width: 160px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    border-radius: 8px;
    padding: 8px 0;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 10px;
}

/* 下拉菜单小箭头 */
.dropdown-content::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid white;
}

.dropdown-content li {
    list-style: none;
}

.dropdown-content a {
    color: var(--text-primary) !important;
    padding: 10px 20px;
    text-decoration: none;
    display: block;
    font-size: 14px;
    white-space: nowrap;
}

.dropdown-content a:hover {
    background-color: #F1F5F9;
    opacity: 1;
}

.nav-item-dropdown:hover .dropdown-content {
    display: block;
    animation: fadeIn 0.2s ease-out;
}

.nav-item-dropdown:hover .arrow {
    transform: rotate(180deg);
}

.nav-cta {
    background-color: white;
    color: var(--primary-color) !important;
    padding: 8px 20px !important;
    border-radius: 20px;
    font-weight: 600 !important;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s !important;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    opacity: 1 !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Main Content */
.main-content {
    padding: 40px 0;
    min-height: calc(100vh - 200px);
}

.page-title {
    font-size: 32px;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.page-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Cards */
.card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
    transition: box-shadow 0.2s, transform 0.2s;
}

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

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.card-content {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Grid Layout */
.grid {
    display: grid;
    gap: 24px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.grid-5 {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

/* Tags */
.tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    margin-right: 8px;
    margin-bottom: 8px;
}

.tag-primary {
    background-color: #EEF2FF;
    color: var(--primary-color);
}

.tag-success {
    background-color: #D1FAE5;
    color: #065F46;
}

.tag-warning {
    background-color: #FEF3C7;
    color: #92400E;
}

.tag-info {
    background-color: #DBEAFE;
    color: #1E40AF;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--bg-gray);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
}

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

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

/* Breadcrumb */
.breadcrumb {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb-separator {
    color: var(--text-light);
}

/* Lists */
.info-list {
    list-style: none;
    margin: 16px 0;
}

.info-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
}

.info-list li:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 500;
    color: var(--text-secondary);
}

.info-value {
    color: var(--text-primary);
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 40px 0;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
}

.footer-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

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

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    margin-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    font-size: 14px;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #8B5CF6 100%);
    color: white;
    padding: 48px 24px;
    border-radius: 12px;
    text-align: center;
    margin: 40px 0;
}

.cta-section h2 {
    font-size: 28px;
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 16px;
    margin-bottom: 24px;
    opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .header-content {
        flex-direction: column;
        gap: 16px;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .page-title {
        font-size: 24px;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.p-1 { padding: 8px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }
.p-4 { padding: 32px; }