/* 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: #f5f5f5;
}

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

/* 导航栏样式 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: #4a90e2;
}

.logo i {
    margin-right: 10px;
    font-size: 28px;
}

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

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #4a90e2;
}

.nav-links a.nav-auth-logout {
    color: #e65100;
}

.nav-links a.nav-auth-logout:hover {
    color: #bf360c;
}

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

.donate-btn {
    background-color: #ff6b6b;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.donate-btn:hover {
    background-color: #ff5252;
    transform: translateY(-2px);
}

.download-btn.navbar-btn {
    background-color: #4a90e2;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.download-btn.navbar-btn:hover {
    background-color: #357abd;
    transform: translateY(-2px);
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 120px 0 80px;
    margin-top: 70px;
}

.hero .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.primary-btn, .secondary-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.primary-btn {
    background-color: #fff;
    color: #667eea;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.secondary-btn {
    background-color: rgba(255, 255, 255, 0.2);
    color: #fff;
    border: 2px solid #fff;
}

.secondary-btn:hover {
    background-color: #fff;
    color: #667eea;
    transform: translateY(-2px);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image i {
    font-size: 180px;
    opacity: 0.8;
}

/* 功能特性样式 */
.features {
    padding: 80px 0;
    background-color: #fff;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.feature-category {
    margin-bottom: 60px;
}

.category-title {
    font-size: 28px;
    margin-bottom: 30px;
    color: #4a90e2;
    display: flex;
    align-items: center;
    gap: 10px;
}

.features-subcategory {
    margin-bottom: 40px;
}

.subcategory-title {
    font-size: 20px;
    margin-bottom: 20px;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.features-grid.security-grid {
    justify-items: center;
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
}

.feature-card {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e0e0e0;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: #4a90e2;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 40px;
    color: #fff;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* 下载区域样式 */
.download {
    padding: 80px 0;
    background-color: #f5f5f5;
}

.download h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 15px;
    color: #333;
}

.download p {
    text-align: center;
    font-size: 18px;
    margin-bottom: 60px;
    color: #666;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.download-card {
    background-color: #fff;
    padding: 40px 20px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    border-color: #4a90e2;
}

.download-card i {
    font-size: 60px;
    margin-bottom: 20px;
    color: #667eea;
}

.download-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.download-btn {
    background-color: #4a90e2;
    color: #fff;
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
    margin: 0 auto;
}

.download-btn:hover {
    background-color: #357abd;
    transform: translateY(-2px);
}

/* 使用指南样式 */
.guide {
    padding: 80px 0;
    background-color: #fff;
}

.guide h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.guide-steps {
    max-width: 800px;
    margin: 0 auto;
}

.guide-step {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    margin-bottom: 50px;
    padding-bottom: 50px;
    border-bottom: 1px solid #e0e0e0;
}

.guide-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: #333;
}

.step-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

/* 登录页面样式 */
.login-section {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.login-card {
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 40px;
    max-width: 450px;
    margin: 0 auto;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #666;
    font-weight: 500;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: 15px;
    color: #999;
    font-size: 16px;
}

.input-wrapper input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.input-wrapper input:focus {
    outline: none;
    border-color: #4a90e2;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.verification-code {
    display: flex;
    gap: 15px;
    align-items: center;
}

.verification-code .input-wrapper {
    flex: 1;
}

.send-code-btn {
    background-color: #4a90e2;
    color: #fff;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.send-code-btn:hover {
    background-color: #357abd;
}

.send-code-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.login-btn {
    width: 100%;
    background-color: #4a90e2;
    color: #fff;
    border: none;
    padding: 15px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.login-btn:hover {
    background-color: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(74, 144, 226, 0.3);
}

.login-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.login-error {
    color: #d93025;
    font-size: 14px;
    line-height: 1.5;
    margin: 0 0 16px;
    min-height: 21px;
    white-space: pre-wrap;
    word-break: break-word;
}

.login-footer {
    text-align: center;
    color: #666;
}

.login-footer a {
    color: #4a90e2;
    text-decoration: none;
    font-weight: 500;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* 订阅页面样式 */
.subscribe-section {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.subscribe-header {
    text-align: center;
    margin-bottom: 60px;
}

.subscribe-header h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: #333;
}

.subscribe-header p {
    font-size: 18px;
    color: #666;
}

.subscription-plans {
    display: flex;
    justify-content: center;
    margin-bottom: 80px;
}

.plan-card {
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 40px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.plan-card {
    position: relative;
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 40px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

/* 免费版样式 */
.plan-card.free-plan {
    border-color: #4caf50;
    background-color: #f9fff9;
}

.plan-card.free-plan .plan-header h3 {
    color: #4caf50;
}

.plan-card.free-plan .price {
    color: #4caf50;
}

.plan-card.free-plan .subscribe-btn {
    background-color: #4caf50;
}

.plan-card.free-plan .subscribe-btn:hover {
    background-color: #43a047;
}

/* 付费版样式 */
.plan-card.premium-plan {
    border-color: #4a90e2;
    background-color: #f5f7ff;
    transform: scale(1.05);
    z-index: 10;
}

.plan-card.premium-plan .plan-header h3 {
    color: #4a90e2;
}

.plan-card.premium-plan .price {
    color: #4a90e2;
}

/* 鼠标悬停效果 */
.plan-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.plan-card.premium-plan:hover {
    transform: translateY(-10px) scale(1.05);
}

.plan-header h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 30px;
}

.plan-price .price {
    font-size: 48px;
    font-weight: bold;
    color: #4a90e2;
}

.plan-price .unit {
    font-size: 18px;
    color: #666;
    margin-left: 5px;
}

.plan-features {
    margin-bottom: 40px;
}

.plan-features .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.plan-features .feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 8px;
    font-size: 14px;
    color: #666;
    transition: all 0.3s ease;
}

.plan-features .feature-item:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
}

.plan-features .feature-item i {
    color: #4caf50;
    font-size: 16px;
    flex-shrink: 0;
}

.plan-features ul {
    list-style: none;
    padding: 0;
}

.plan-features li {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: #666;
    font-size: 16px;
}

.plan-features li i {
    color: #4caf50;
    margin-right: 10px;
    font-size: 18px;
}

/* 限制功能样式 */
.plan-features .limited-feature {
    opacity: 0.5;
}

.plan-features .limited-feature i {
    color: #ff9800;
}

.plan-features .limited-feature:before {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background-color: #ff9800;
    opacity: 0.3;
}

.subscribe-btn {
    background-color: #4a90e2;
    color: #fff;
    border: none;
    padding: 15px 40px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.subscribe-btn:hover {
    background-color: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(74, 144, 226, 0.3);
}

.subscribe-status {
    color: #2e7d32;
    font-size: 14px;
    line-height: 1.5;
    margin: 0 0 16px;
    min-height: 21px;
}

.subscribe-status--error {
    color: #d93025;
}

.subscribe-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* 后续更新样式 */
.future-updates {
    margin-top: 30px;
    padding: 20px;
    background-color: #f0f7ff;
    border-radius: 10px;
    border: 1px solid #e0e7ff;
}

.future-updates h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #4a90e2;
    display: flex;
    align-items: center;
    gap: 10px;
}

.future-updates p {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
}

.updates-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.updates-list span {
    background-color: #e6f0ff;
    color: #4a90e2;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.updates-list span:hover {
    background-color: #4a90e2;
    color: #fff;
    transform: translateY(-2px);
}

/* 邀请好友活动样式 */
.invite-section {
    margin: 60px 0;
}

.invite-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 15px;
    padding: 40px;
    display: flex;
    align-items: center;
    gap: 30px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.invite-icon {
    font-size: 80px;
    opacity: 0.8;
    flex-shrink: 0;
}

.invite-content {
    flex: 1;
}

.invite-content h3 {
    font-size: 28px;
    margin-bottom: 15px;
    color: #fff;
}

.invite-main-text {
    font-size: 18px;
    margin-bottom: 25px;
    line-height: 1.6;
}

.invite-main-text .highlight {
    font-weight: bold;
    color: #ffd700;
    font-size: 20px;
}

.invite-duration {
    font-size: 16px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
}

.invite-duration i {
    color: #ffd700;
    font-size: 18px;
}

.invite-duration .highlight {
    font-weight: bold;
    color: #ffd700;
    font-size: 18px;
}

.invite-rules {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
}

.invite-rules li {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: 16px;
}

.invite-rules li i {
    color: #ffd700;
    margin-right: 12px;
    font-size: 18px;
}

.invite-btn {
    background-color: #fff;
    color: #667eea;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.invite-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.subscribe-benefits {
    text-align: center;
}

.subscribe-benefits h3 {
    font-size: 28px;
    margin-bottom: 40px;
    color: #333;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

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

.benefit-item i {
    font-size: 48px;
    color: #4a90e2;
    margin-bottom: 20px;
}

.benefit-item h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.benefit-item p {
    color: #666;
    line-height: 1.6;
}

/* 页脚样式 */
.footer {
    background-color: #1a1a1a;
    color: #ffffff;
    padding: 40px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    margin-bottom: 30px;
    align-items: start;
}

/* 左侧logo区域 */
.footer-section:first-child {
    display: flex;
    flex-direction: column;
}

.footer-section:first-child .logo {
    margin-bottom: 15px;
}

.footer-section:first-child .logo span {
    color: #ffffff;
    font-size: 24px;
    font-weight: bold;
}

.footer-section:first-child .logo i {
    color: #4a90e2;
    font-size: 28px;
}

.footer-section:first-child p {
    color: #cccccc;
    font-size: 14px;
    line-height: 1.5;
    margin: 0;
}

/* 中间和右侧区域 */
.footer-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #ffffff;
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: #cccccc;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 14px;
}

.footer-section ul li a:hover {
    color: #4a90e2;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333333;
    color: #666666;
    font-size: 12px;
    margin-top: 20px;
}

.copyright {
    margin-top: 8px;
}

.copyright a {
    color: #666666;
    text-decoration: none;
}

.copyright a:hover {
    color: #4a90e2;
}

/* 响应式页脚 */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .footer-section:first-child {
        align-items: center;
    }
}

/* 更新日志样式 */
.changelog-section {
    padding: 80px 0;
    background-color: #fff;
}

.changelog-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
    color: #333;
}

.admin-controls {
    text-align: right;
    margin-bottom: 30px;
}

.admin-btn {
    background-color: #4a90e2;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.admin-btn:hover {
    background-color: #357abd;
    transform: translateY(-2px);
}

.changelog-content {
    max-width: 800px;
    margin: 0 auto;
}

.changelog-item {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    border: 1px solid #e0e0e0;
    transition: all 0.3s ease;
}

.changelog-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: #4a90e2;
}

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

.changelog-header h3 {
    font-size: 24px;
    color: #4a90e2;
    margin: 0;
}

.changelog-date {
    background-color: #e6f0ff;
    color: #4a90e2;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.changelog-details h4 {
    font-size: 18px;
    color: #333;
    margin: 20px 0 10px;
}

.changelog-details ul {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
}

.changelog-details li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 8px;
    color: #666;
    line-height: 1.6;
}

.changelog-details li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #4a90e2;
    font-weight: bold;
    font-size: 18px;
}

/* 回到顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: #4a90e2;
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 999;
}

.back-to-top:hover {
    background-color: #357abd;
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image i {
        font-size: 150px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .features h2, .download h2, .guide h2 {
        font-size: 28px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .guide-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .primary-btn, .secondary-btn {
        width: 100%;
        justify-content: center;
    }
}