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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-color: #f8fafc;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --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: 8px;
    --radius-lg: 12px;
}

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

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

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.logo i {
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.nav-auth {
    display: flex;
    align-items: center;
    gap: 15px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    border: 2px solid transparent;
}

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

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

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

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

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 6px 16px;
    font-size: 0.875rem;
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 20px 60px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: -1;
}

.hero-bg::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 {
    text-align: center;
    color: var(--white);
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    padding: 10px 20px;
    border-radius: 30px;
    backdrop-filter: blur(10px);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

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

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

.hero .btn-outline {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

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

.section-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-color);
}

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

.features {
    padding: 80px 0;
    background: var(--white);
}

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

.feature-card {
    text-align: center;
    padding: 40px 30px;
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

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

.packages {
    padding: 80px 0;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.package-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.package-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    padding: 30px;
    text-align: center;
}

.package-header h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.package-desc {
    opacity: 0.9;
    font-size: 0.95rem;
}

.package-price {
    text-align: center;
    padding: 30px;
    border-bottom: 1px solid var(--border-color);
}

.currency {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.package-features {
    list-style: none;
    padding: 30px;
}

.package-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    color: var(--text-color);
}

.package-features li i {
    color: var(--success-color);
}

.package-card .btn {
    margin: 0 30px 30px;
    width: calc(100% - 60px);
}

.about-preview {
    padding: 80px 0;
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: var(--bg-color);
    border-radius: var(--radius-lg);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-light);
}

.footer {
    background: #1e293b;
    color: #cbd5e1;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h3 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.footer-info p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-links h4 {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    color: #cbd5e1;
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #334155;
}

.footer-bottom a {
    color: #cbd5e1;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: var(--white);
}

.footer-simple {
    padding: 30px 0;
    text-align: center;
}

.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.auth-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 20px 40px;
}

.auth-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 450px;
}

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

.auth-header h2 {
    font-size: 1.75rem;
    margin-bottom: 10px;
}

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

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

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

.input-icon {
    position: relative;
}

.input-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

.input-icon input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.input-icon input::placeholder {
    padding-left: 5px;
}

.input-icon input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-light);
}

.checkbox-label input {
    width: 18px;
    height: 18px;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

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

.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 120px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.page-header p {
    opacity: 0.9;
    font-size: 1.1rem;
}

.packages-page {
    background: var(--bg-color);
}

.service-guarantee {
    padding: 80px 0;
    background: var(--white);
}

.guarantee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.guarantee-item {
    text-align: center;
    padding: 30px;
}

.guarantee-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.guarantee-item h4 {
    margin-bottom: 10px;
}

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

.buy-section {
    padding: 60px 0;
}

.buy-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.order-summary {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow);
}

.order-summary h3 {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.order-package h4 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.order-desc {
    color: var(--text-light);
    margin-bottom: 15px;
}

.order-price {
    display: flex;
    align-items: baseline;
    gap: 5px;
    margin-bottom: 10px;
}

.order-price .label {
    color: var(--text-light);
}

.order-price .price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.order-duration {
    color: var(--text-light);
}

.order-features {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.order-features h4 {
    margin-bottom: 15px;
}

.order-features ul {
    list-style: none;
}

.order-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-color);
}

.order-features li i {
    color: var(--success-color);
}

.payment-form {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow);
}

.payment-form h3 {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.payment-methods {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.payment-method {
    flex: 1;
    min-width: 120px;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    text-align: center;
    transition: all 0.3s;
}

.payment-method:hover {
    border-color: var(--primary-color);
}

.payment-method.active {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.payment-method input {
    display: none;
}

.payment-method i {
    font-size: 2rem;
    margin-bottom: 8px;
    display: block;
}

.payment-method span {
    font-size: 0.9rem;
}

.payment-method .fa-alipay {
    color: #1677ff;
}

.payment-method .fa-weixin {
    color: #07c160;
}

.payment-method .fa-university {
    color: var(--text-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.order-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.total-price {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

.orders-section {
    padding: 60px 0;
}

.orders-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow);
}

.orders-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.tab-btn {
    padding: 10px 20px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-light);
    border-radius: var(--radius);
    transition: all 0.3s;
}

.tab-btn:hover {
    color: var(--primary-color);
}

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

.orders-list {
    min-height: 300px;
}

.order-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 15px;
    overflow: hidden;
}

.order-header {
    display: flex;
    justify-content: space-between;
    padding: 15px 20px;
    background: var(--bg-color);
    font-size: 0.9rem;
    color: var(--text-light);
}

.order-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.order-info h4 {
    margin-bottom: 5px;
}

.order-amount {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.order-status {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.status-pending {
    background: #fef3c7;
    color: #d97706;
}

.status-paid {
    background: #d1fae5;
    color: #059669;
}

.status-cancelled {
    background: #fee2e2;
    color: #dc2626;
}

.status-completed {
    background: #dbeafe;
    color: #2563eb;
}

.order-actions {
    display: flex;
    gap: 10px;
    padding: 0 20px 20px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.page-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background: var(--white);
    cursor: pointer;
    border-radius: var(--radius);
    transition: all 0.3s;
}

.page-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.page-ellipsis {
    padding: 8px 12px;
}

.user-center {
    padding: 60px 0;
}

.user-center-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 30px;
}

.user-sidebar {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow);
    height: fit-content;
}

.user-avatar {
    text-align: center;
    margin-bottom: 30px;
}

.user-avatar i {
    font-size: 5rem;
    color: var(--primary-color);
}

.user-nav {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.user-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    color: var(--text-color);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.3s;
}

.user-nav-item:hover {
    background: var(--bg-color);
}

.user-nav-item.active {
    background: var(--primary-color);
    color: var(--white);
}

.user-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-content h3 {
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.user-form {
    max-width: 600px;
}

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

.about-section {
    padding: 60px 0;
}

.about-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.about-intro h2 {
    margin-bottom: 20px;
}

.about-intro p {
    color: var(--text-light);
    line-height: 1.8;
}

.business-scope {
    margin-bottom: 60px;
}

.business-scope h2 {
    text-align: center;
    margin-bottom: 40px;
}

.scope-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.scope-item {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
}

.scope-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.scope-item h4 {
    margin-bottom: 10px;
}

.scope-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.company-values {
    margin-bottom: 60px;
}

.company-values h2 {
    text-align: center;
    margin-bottom: 40px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.value-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.value-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-icon i {
    font-size: 2rem;
    color: var(--white);
}

.value-card h4 {
    margin-bottom: 10px;
}

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

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

.company-info h2 {
    margin-bottom: 30px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.info-item {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: var(--bg-color);
    border-radius: var(--radius);
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 5px;
}

.info-item h4 {
    margin-bottom: 5px;
}

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

.contact-section {
    padding: 60px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
}

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

.contact-info h2 {
    margin-bottom: 30px;
}

.contact-items {
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.25rem;
    color: var(--white);
}

.contact-detail h4 {
    margin-bottom: 5px;
}

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

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

.social-links h4 {
    margin-bottom: 15px;
}

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

.social-icon {
    width: 45px;
    height: 45px;
    background: var(--bg-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s;
}

.social-icon:hover {
    background: var(--primary-color);
    color: var(--white);
}

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

.contact-form-container h2 {
    margin-bottom: 30px;
}

.map-section {
    padding: 60px 0;
    background: var(--bg-color);
}

.map-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.map-placeholder {
    height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
}

.map-placeholder i {
    font-size: 4rem;
    margin-bottom: 20px;
}

.error-section {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 70px;
}

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

.error-content i {
    font-size: 5rem;
    color: var(--danger-color);
    margin-bottom: 20px;
}

.error-content h1 {
    margin-bottom: 15px;
}

.error-content p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.toast {
    position: fixed;
    top: 90px;
    right: 20px;
    padding: 15px 25px;
    border-radius: var(--radius);
    color: var(--white);
    font-weight: 500;
    z-index: 9999;
    animation: slideIn 0.3s ease;
}

.toast.success {
    background: var(--success-color);
}

.toast.error {
    background: var(--danger-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .buy-container {
        grid-template-columns: 1fr;
    }

    .user-center-container {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
    }

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

    .mobile-menu-btn {
        display: block;
    }

    .nav-auth {
        display: none;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-features {
        flex-direction: column;
        align-items: center;
    }

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

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

    .payment-methods {
        flex-direction: column;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }
}