/* Feedgo - 智能配方系统样式表 */

/* CSS变量定义 */
:root {
    /* 主色调 - 专业蓝绿色系 */
    --primary-50: #f0fdfa;
    --primary-100: #ccfbf1;
    --primary-200: #99f6e4;
    --primary-300: #5eead4;
    --primary-400: #2dd4bf;
    --primary-500: #14b8a6;
    --primary-600: #0d9488;
    --primary-700: #0f766e;
    --primary-800: #115e59;
    --primary-900: #134e4a;

    /* 辅助色 */
    --secondary-50: #eff6ff;
    --secondary-100: #dbeafe;
    --secondary-500: #3b82f6;
    --secondary-600: #2563eb;
    --secondary-700: #1d4ed8;

    /* 中性色 */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* 功能色 */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* 字体大小 */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--gray-900);
    background-color: var(--gray-50);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 滚动进度指示器 */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gray-200);
    z-index: 1001;
}

.scroll-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    width: 0%;
    transition: width 0.1s ease;
}

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: inherit;
}

.logo-icon {
    width: 3rem;
    height: 3rem;
    background: transparent;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.logo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

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

.logo-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    min-width: 0;
}

.logo-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.1;
    margin: 0;
    padding: 0;
}

.logo-subtitle {
    font-size: 0.875rem;
    color: var(--primary-600);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    line-height: 1.2;
    margin: 0;
    padding: 0;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-600);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-600);
    transition: width 0.2s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

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

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--gray-600);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-white {
    background: white;
    color: var(--primary-600);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-1px);
}

.btn-outline-white {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline-white:hover {
    background: white;
    color: var(--primary-600);
}

.full-width {
    width: 100%;
}

/* 移动端菜单 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--gray-600);
    transition: all 0.3s ease;
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-content {
    position: absolute;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 300px;
    height: 100%;
    background: white;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    padding: 2rem;
    overflow-y: auto;
}

.mobile-menu.active .mobile-menu-content {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--gray-600);
    cursor: pointer;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.mobile-menu-links a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.mobile-menu-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* 英雄区域 */
.hero {
    padding: 8rem 0 6rem;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--secondary-50) 100%);
    position: relative;
    overflow: hidden;
}

.hero::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="%23e5e7eb" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-600);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 1px solid var(--primary-200);
    box-shadow: var(--shadow-sm);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--primary-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-600);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: 0.5rem;
}

/* 通用区域样式 */
.features,
.demo,
.testimonials,
.cta {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* 特色功能 */
.features {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary-600);
    font-size: 1.25rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.feature-desc {
    color: var(--gray-600);
    line-height: 1.7;
}

/* 产品演示 */
.demo {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--primary-50) 100%);
}

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

.demo-text h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.demo-text p {
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.demo-features {
    list-style: none;
    margin-bottom: 2rem;
}

.demo-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--gray-700);
}

.demo-features li::before {
    content: '✓';
    width: 1.25rem;
    height: 1.25rem;
    background: var(--primary-500);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

.demo-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.demo-visual {
    position: relative;
}

.demo-mockup {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.demo-header {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.demo-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.demo-title {
    font-weight: 600;
    font-size: 0.875rem;
}

.demo-content-area {
    padding: 1.5rem;
}

.demo-chart {
    height: 8rem;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.chart-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-700);
    font-weight: 600;
}

.demo-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.demo-metric {
    background: var(--gray-50);
    padding: 1rem;
    border-radius: var(--radius-lg);
    text-align: center;
}

.demo-metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-600);
}

.demo-metric-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

/* 客户案例 */
.testimonials {
    background: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.testimonial-card {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 3rem;
    color: var(--primary-300);
    font-weight: 700;
}

.testimonial-content {
    margin-bottom: 1.5rem;
    color: var(--gray-700);
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
}

.testimonial-info h4 {
    font-weight: 600;
    color: var(--gray-900);
}

.testimonial-info p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.testimonials-cta {
    text-align: center;
}

/* CTA区域 */
.cta {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.cta-subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 页脚 */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 4rem 0 2rem;
}

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

.footer-section h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

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

.social-links a {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    text-decoration: none;
    transition: all 0.2s ease;
}

.social-links a:hover {
    background: var(--primary-600);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 2rem;
    text-align: center;
    color: var(--gray-400);
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--gray-500);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.modal-body {
    padding: 1.5rem;
}

/* 表单样式 */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--gray-700);
    font-size: 0.875rem;
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(14, 184, 166, 0.1);
}

.auth-divider {
    text-align: center;
    position: relative;
    margin: 1rem 0;
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gray-200);
}

.auth-divider span {
    background: white;
    padding: 0 1rem;
    color: var(--gray-500);
    font-size: 0.875rem;
}

.auth-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* 复选框样式 */
.checkbox-group {
    margin: 1rem 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--gray-600);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--gray-300);
    border-radius: 4px;
    margin-right: 0.75rem;
    margin-top: 2px;
    flex-shrink: 0;
    position: relative;
    transition: all 0.2s ease;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background-color: var(--primary-600);
    border-color: var(--primary-600);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-label:hover .checkmark {
    border-color: var(--primary-400);
}

.checkbox-label .link {
    color: var(--primary-600);
    text-decoration: none;
    font-weight: 500;
}

.checkbox-label .link:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

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

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

    .demo-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

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

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

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

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }
.mt-6 { margin-top: 1.5rem; }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.grid { display: grid; }

/* 页面头部按钮样式 */
.header-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.header-actions .btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    min-width: 160px;
    text-align: center;
}

.header-actions .btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 响应式按钮排列 */
@media (max-width: 480px) {
    .header-actions {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    .header-actions .btn {
        width: 100%;
        max-width: 280px;
    }
}