/* ===========================
   星脉联盟 Starnex - 主样式文件
   =========================== */

/* 1. 全局样式 */
:root {
    --primary-color: #e91e63;
    --secondary-color: #d4668d;
    --accent-color: #d4a574;
    --dark-color: #5d1f34;
    --light-color: #fdf5f7;
    --gradient-primary: linear-gradient(135deg, #ffc0d3 0%, #e91e63 50%, #d4a574 100%);
    --gradient-secondary: linear-gradient(135deg, #ffb3c6 0%, #ff6b9d 100%);
    --gradient-gold: linear-gradient(135deg, #f5d9b8 0%, #d4a574 50%, #c49060 100%);
    --shadow-sm: 0 2px 4px rgba(233, 30, 99, 0.08);
    --shadow-md: 0 4px 6px rgba(233, 30, 99, 0.15);
    --shadow-lg: 0 10px 15px rgba(233, 30, 99, 0.2);
    --shadow-xl: 0 20px 25px rgba(233, 30, 99, 0.25);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--dark-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 2. 导航栏样式 */
.navbar {
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98) !important;
    box-shadow: var(--shadow-md);
}

.brand-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-decoration: none;
}

.brand-logo-img {
    height: 50px;
    width: auto;
    transition: all 0.3s ease;
}

.brand-logo-img:hover {
    transform: scale(1.05);
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
}

.brand-subtitle {
    font-size: 0.75rem;
    color: #64748b;
    letter-spacing: 2px;
}

.nav-link {
    color: var(--dark-color);
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.btn-join {
    background: var(--gradient-primary);
    color: white !important;
    border-radius: 25px;
    padding: 0.625rem 1.5rem !important;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-join::after {
    display: none;
}

/* 3. 英雄区域样式 */
.hero-section {
    position: relative;
    background: linear-gradient(135deg, #ffc0d3 0%, #e91e63 50%, #d4a574 100%);
    color: white;
    padding-top: 80px;
    overflow: hidden;
}

.hero-overlay {
    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 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,133.3C672,139,768,181,864,181.3C960,181,1056,139,1152,122.7C1248,107,1344,117,1392,122.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: bottom;
    opacity: 0.3;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, #ffeaa7 0%, #fdcb6e 50%, #d4a574 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons .btn {
    padding: 0.875rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 160px;
}

.hero-buttons .btn-primary {
    background: white;
    color: var(--primary-color);
    border: none;
}

.hero-buttons .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.hero-buttons .btn-outline-light:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
}

.hero-image img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: white;
    opacity: 0.7;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* 4. 统计数据区域 */
.stats-section {
    margin-top: -60px;
    position: relative;
    z-index: 10;
}

.stat-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.stat-icon {
    font-size: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #64748b;
    font-size: 1rem;
    margin: 0;
}

/* 5. 章节标题样式 */
.section-header {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #64748b;
}

/* 6. 功能特性卡片 */
.features-section {
    padding: 5rem 0;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    height: 100%;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

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

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.feature-description {
    color: #64748b;
    line-height: 1.8;
    margin: 0;
}

/* 7. 会员卡片样式 */
.membership-section {
    padding: 5rem 0;
    background: var(--light-color);
}

.membership-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    height: 100%;
    position: relative;
    border: 3px solid transparent;
}

.membership-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.membership-card.featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-xl);
}

.membership-card.premium {
    border-color: #e91e63;
}

.membership-card.elite {
    border-color: #d4a574;
    background: linear-gradient(135deg, #ffeaa7 0%, #ffffff 100%);
}

.membership-badge {
    position: absolute;
    top: -15px;
    right: 20px;
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.membership-badge.popular {
    background: var(--gradient-secondary);
}

.membership-badge.vip {
    background: linear-gradient(135deg, #e91e63 0%, #c2185b 100%);
}

.membership-badge.partner {
    background: var(--gradient-gold);
}

.membership-name {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    margin-top: 1rem;
}

.membership-price {
    margin-bottom: 2rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
}

.price-unit {
    font-size: 1rem;
    color: #64748b;
    margin-left: 0.5rem;
}

.membership-benefits {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.membership-benefits li {
    padding: 0.75rem 0;
    color: #475569;
    display: flex;
    align-items: flex-start;
}

.membership-benefits li i {
    color: #10b981;
    margin-right: 0.75rem;
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.btn-membership {
    width: 100%;
    padding: 0.875rem;
    border-radius: 30px;
    font-weight: 600;
    background: var(--gradient-primary);
    color: white;
    border: none;
    transition: all 0.3s ease;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-membership:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

/* 8. 活动区域样式 */
.activities-section {
    padding: 5rem 0;
}

.activity-list {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.activity-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-item:hover {
    background: var(--light-color);
    border-radius: 10px;
}

.activity-date {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
}

.date-day {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.date-month {
    font-size: 0.875rem;
}

.activity-info h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.activity-info p {
    color: #64748b;
    margin-bottom: 0.25rem;
}

.activity-info i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

/* 9. 二维码区域 */
.qr-section {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
}

.qr-code-container {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 15px;
    display: inline-block;
}

.qr-code-image {
    width: 250px;
    height: 250px;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
}

.qr-placeholder {
    width: 250px;
    height: 250px;
    background: white;
    border: 3px dashed #cbd5e1;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.qr-placeholder i {
    font-size: 4rem;
    color: #cbd5e1;
}

.qr-placeholder p {
    color: #64748b;
    margin: 0;
    text-align: center;
}

.qr-tips {
    color: #64748b;
}

.qr-tips i {
    color: var(--primary-color);
}

/* 10. CTA 区域 */
.cta-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #ffc0d3 0%, #e91e63 50%, #d4a574 100%);
    color: white;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-description {
    font-size: 1.2rem;
    opacity: 0.95;
}

.btn-cta {
    background: white;
    color: var(--primary-color);
    padding: 1rem 3rem;
    border-radius: 30px;
    font-weight: 600;
    border: none;
    transition: all 0.3s ease;
    height: 56px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 180px;
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    color: var(--primary-color);
}

/* 11. 联系区域 */
.contact-section {
    padding: 5rem 0;
    background: var(--light-color);
}

.contact-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all 0.3s ease;
    height: 100%;
}

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

.contact-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-card h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-card p {
    color: #64748b;
    margin-bottom: 0.5rem;
}

/* 12. 页脚样式 */
.footer {
    background: #1e293b;
    color: #94a3b8;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

.footer-brand .brand-name {
    font-size: 1.5rem;
}

.footer-brand .brand-subtitle {
    font-size: 0.875rem;
    color: #64748b;
}

.footer-description {
    line-height: 1.8;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #334155;
    border-radius: 50%;
    color: white;
    margin-right: 0.5rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-title {
    color: white;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.qr-mini {
    text-align: center;
}

.qr-mini-image {
    width: 100px;
    height: 100px;
    border-radius: 10px;
    margin: 0 auto;
    display: block;
    box-shadow: var(--shadow-sm);
}

.qr-mini-placeholder {
    width: 100px;
    height: 100px;
    background: #334155;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.qr-mini-placeholder i {
    font-size: 2rem;
    color: #64748b;
}

.footer-divider {
    border-color: #334155;
    margin: 2rem 0;
}

.copyright {
    margin: 0;
    font-size: 0.875rem;
}

/* 13. Join 页面样式 */
.page-header {
    background: linear-gradient(135deg, #ffc0d3 0%, #e91e63 50%, #d4a574 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.2rem;
    opacity: 0.95;
}

.membership-comparison {
    background: var(--light-color);
}

.membership-table {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.membership-table thead {
    background: var(--light-color);
}

.membership-table th {
    padding: 1.5rem;
    border: none;
    font-weight: 600;
}

.membership-table td {
    padding: 1.25rem 1.5rem;
    vertical-align: middle;
}

.membership-table .btn {
    height: 40px;
    min-width: 120px;
    font-size: 0.9375rem;
}

.feature-column {
    min-width: 200px;
    font-weight: 600;
}

.plan-header {
    padding: 1rem;
    border-radius: 10px;
}

.plan-header.starter {
    background: linear-gradient(135deg, #ffe0ec 0%, #ffffff 100%);
}

.plan-header.premium {
    background: linear-gradient(135deg, #ffc0d3 0%, #ffffff 100%);
}

.plan-header.vip {
    background: linear-gradient(135deg, #ffb3c6 0%, #ffffff 100%);
}

.plan-header.elite {
    background: linear-gradient(135deg, #ffeaa7 0%, #ffffff 100%);
}

.plan-header h5 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.plan-header .price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

/* 14. 流程步骤 */
.process-step {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    height: 100%;
    position: relative;
}

.process-step:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.step-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin: 1.5rem 0 1rem;
}

.process-step h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.process-step p {
    color: #64748b;
    margin: 0;
}

/* 15. 二维码申请区域 */
.qr-application-section {
    background: white;
}

.qr-features {
    margin-top: 2rem;
}

.qr-feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
}

.qr-feature-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.qr-code-large {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 15px;
}

.qr-code-large-image {
    width: 300px;
    height: 300px;
    border-radius: 15px;
    margin: 0 auto;
    display: block;
    box-shadow: var(--shadow-md);
    border: 3px solid white;
}

.qr-placeholder-large {
    width: 300px;
    height: 300px;
    background: white;
    border: 4px dashed #cbd5e1;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.qr-placeholder-large i {
    font-size: 5rem;
    color: #cbd5e1;
}

.qr-placeholder-large p {
    color: #64748b;
    margin: 0;
    font-weight: 600;
}

.qr-note {
    color: #64748b;
    font-size: 0.95rem;
}

.qr-note i {
    color: var(--primary-color);
}

/* 16. FAQ 区域 */
.faq-section .accordion-item {
    border: none;
    margin-bottom: 1rem;
    border-radius: 10px !important;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-section .accordion-button {
    background: white;
    color: var(--dark-color);
    font-weight: 600;
    padding: 1.25rem 1.5rem;
}

.faq-section .accordion-button:not(.collapsed) {
    background: linear-gradient(135deg, #ffc0d3 0%, #e91e63 100%);
    color: white;
}

.faq-section .accordion-button:focus {
    box-shadow: none;
}

.faq-section .accordion-body {
    padding: 1.5rem;
    background: white;
    color: #64748b;
    line-height: 1.8;
}

/* 17. 联系 CTA */
.contact-cta-section {
    background: var(--light-color);
}

.contact-cta-section h2 {
    font-size: 2rem;
    font-weight: 700;
}

.btn-contact {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.875rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 140px;
}

.btn-contact:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: white;
}

/* 18. 模态框样式 */
.modal-content {
    border-radius: 20px;
    border: none;
}

.modal-header {
    background: linear-gradient(135deg, #ffc0d3 0%, #e91e63 100%);
    color: white;
    border-radius: 20px 20px 0 0;
    padding: 1.5rem;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid #e2e8f0;
}

.modal-footer .btn {
    min-width: 100px;
    height: 44px;
}

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-control,
.form-select {
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.1);
}

/* 19. 响应式设计 */
@media (max-width: 991.98px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .page-title {
        font-size: 2.5rem;
    }
    
    .membership-table {
        font-size: 0.875rem;
    }
}

@media (max-width: 767.98px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .cta-title {
        font-size: 1.75rem;
    }
    
    .membership-table th,
    .membership-table td {
        padding: 0.75rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .qr-code-large-image {
        width: 250px;
        height: 250px;
    }
    
    .qr-code-image {
        width: 200px;
        height: 200px;
    }
    
    .brand-logo-img {
        height: 40px;
    }
}

/* 20. 工具类 */
.bg-gradient-primary {
    background: linear-gradient(135deg, #ffc0d3 0%, #e91e63 50%, #d4a574 100%);
}

.text-gradient-primary {
    background: linear-gradient(135deg, #ffc0d3 0%, #e91e63 50%, #d4a574 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 按钮统一规范 */
.btn {
    transition: all 0.3s ease;
    font-weight: 600;
    border: none;
}

.btn-sm {
    height: 36px;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-md, .btn {
    height: 44px;
    padding: 0.625rem 1.5rem;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-lg {
    height: 50px;
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-xl {
    height: 56px;
    padding: 1rem 2.5rem;
    font-size: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

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

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

/* 返回顶部按钮 */
.btn-back-to-top {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.btn-back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* 21. 动画优化 */
[data-aos] {
    pointer-events: auto;
}

.aos-animate {
    pointer-events: auto;
}