/**
 * Studio Template Generator - Frontend Styles
 * 科技感设计风格
 * 主色调: #6366f1 (indigo) + #0ea5e9 (cyan)
 */

/* ========================================
   CSS 变量
   ======================================== */
:root {
    --stg-primary: #6366f1;
    --stg-secondary: #0ea5e9;
    --stg-primary-light: #818cf8;
    --stg-primary-dark: #4f46e5;
    --stg-secondary-light: #38bdf8;
    --stg-secondary-dark: #0284c7;
    --stg-gradient: linear-gradient(135deg, #6366f1 0%, #0ea5e9 100%);
    --stg-gradient-hover: linear-gradient(135deg, #4f46e5 0%, #0284c7 100%);
    
    --stg-text-primary: #1e293b;
    --stg-text-secondary: #64748b;
    --stg-text-muted: #94a3b8;
    
    --stg-bg-primary: #ffffff;
    --stg-bg-secondary: #f8fafc;
    --stg-bg-tertiary: #f1f5f9;
    
    --stg-border-color: #e2e8f0;
    --stg-border-radius-sm: 8px;
    --stg-border-radius: 12px;
    --stg-border-radius-lg: 16px;
    --stg-border-radius-xl: 24px;
    
    --stg-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --stg-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --stg-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --stg-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --stg-transition: all 0.3s ease;
}

/* ========================================
   基础重置
   ======================================== */
.stg-template * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.stg-template {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--stg-text-primary);
    line-height: 1.6;
    background: var(--stg-bg-primary);
}

/* ========================================
   导航栏
   ======================================== */
.stg-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--stg-border-color);
    transition: var(--stg-transition);
}

.stg-navbar.scrolled {
    box-shadow: var(--stg-shadow);
}

.stg-navbar-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stg-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-weight: 700;
    font-size: 20px;
    color: var(--stg-text-primary);
}

.stg-logo-icon {
    width: 36px;
    height: 36px;
    background: var(--stg-gradient);
    border-radius: var(--stg-border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.stg-nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.stg-nav-item {
    position: relative;
}

.stg-nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    text-decoration: none;
    color: var(--stg-text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--stg-border-radius-sm);
    transition: var(--stg-transition);
}

.stg-nav-link:hover {
    color: var(--stg-primary);
    background: var(--stg-bg-tertiary);
}

.stg-nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ========================================
   按钮
   ======================================== */
.stg-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--stg-border-radius-sm);
    cursor: pointer;
    transition: var(--stg-transition);
}

.stg-btn-primary {
    background: var(--stg-gradient);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.stg-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.5);
}

.stg-btn-secondary {
    background: var(--stg-bg-tertiary);
    color: var(--stg-text-primary);
}

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

.stg-btn-outline {
    background: transparent;
    color: var(--stg-primary);
    border: 1px solid var(--stg-primary);
}

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

.stg-btn-lg {
    padding: 14px 28px;
    font-size: 16px;
    border-radius: var(--stg-border-radius);
}

.stg-btn-xl {
    padding: 18px 36px;
    font-size: 18px;
    border-radius: var(--stg-border-radius);
}

/* ========================================
   Hero 区域
   ======================================== */
.stg-hero {
    padding: 120px 24px 80px;
    background: linear-gradient(180deg, var(--stg-bg-secondary) 0%, var(--stg-bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

.stg-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 600px;
    background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.stg-hero-inner {
    max-width: 1280px;
    margin: 0 auto;
    text-align: center;
    position: relative;
}

.stg-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--stg-bg-primary);
    border: 1px solid var(--stg-border-color);
    border-radius: 100px;
    font-size: 13px;
    color: var(--stg-text-secondary);
    margin-bottom: 24px;
}

.stg-hero-badge-dot {
    width: 6px;
    height: 6px;
    background: var(--stg-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.stg-hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--stg-text-primary) 0%, var(--stg-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stg-hero-subtitle {
    font-size: 20px;
    color: var(--stg-text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.stg-hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
}

.stg-hero-image {
    max-width: 1000px;
    margin: 0 auto;
    border-radius: var(--stg-border-radius-lg);
    box-shadow: var(--stg-shadow-xl);
    overflow: hidden;
    background: var(--stg-bg-primary);
    border: 1px solid var(--stg-border-color);
}

.stg-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   文章统计栏
   ======================================== */
.stg-stats-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-top: 48px;
    padding: 20px 32px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--stg-border-color);
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(99, 102, 241, 0.12);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.stg-stats-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 8px 16px;
    border-radius: 12px;
    transition: var(--stg-transition);
}

.stg-stats-card:hover {
    background: var(--stg-bg-tertiary);
}

.stg-stats-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stg-stats-total .stg-stats-icon {
    background: linear-gradient(135deg, #6366f1 0%, #0ea5e9 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.stg-stats-today .stg-stats-icon {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.stg-stats-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stg-stats-number {
    font-size: 28px;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--stg-primary) 0%, var(--stg-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stg-stats-today .stg-stats-number {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stg-stats-label {
    font-size: 13px;
    color: var(--stg-text-secondary);
    font-weight: 500;
}

.stg-stats-divider {
    width: 1px;
    height: 48px;
    background: linear-gradient(180deg, transparent 0%, var(--stg-border-color) 50%, transparent 100%);
}

/* 响应式 */
@media (max-width: 768px) {
    .stg-stats-bar {
        flex-direction: column;
        gap: 16px;
        padding: 20px 24px;
        margin-top: 32px;
    }
    
    .stg-stats-divider {
        width: 100%;
        height: 1px;
        background: linear-gradient(90deg, transparent 0%, var(--stg-border-color) 50%, transparent 100%);
    }
    
    .stg-stats-card {
        width: 100%;
        justify-content: center;
    }
    
    .stg-stats-number {
        font-size: 24px;
    }
}

/* ========================================
   功能展示
   ======================================== */
.stg-features {
    padding: 100px 24px;
    background: var(--stg-bg-primary);
}

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

.stg-section-tag {
    display: inline-block;
    padding: 6px 12px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    color: var(--stg-primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
}

.stg-section-title {
    font-size: 40px;
    font-weight: 700;
    color: var(--stg-text-primary);
    margin-bottom: 16px;
}

.stg-section-subtitle {
    font-size: 18px;
    color: var(--stg-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.stg-features-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stg-feature-card {
    padding: 32px;
    background: var(--stg-bg-primary);
    border: 1px solid var(--stg-border-color);
    border-radius: var(--stg-border-radius-lg);
    transition: var(--stg-transition);
}

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

.stg-feature-icon {
    width: 48px;
    height: 48px;
    background: var(--stg-gradient);
    border-radius: var(--stg-border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.stg-feature-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--stg-text-primary);
    margin-bottom: 12px;
}

.stg-feature-description {
    font-size: 14px;
    color: var(--stg-text-secondary);
    line-height: 1.7;
}

/* ========================================
   产品/案例展示
   ======================================== */
.stg-products {
    padding: 100px 24px;
    background: var(--stg-bg-secondary);
}

.stg-products-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stg-product-card {
    background: var(--stg-bg-primary);
    border-radius: var(--stg-border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--stg-border-color);
    transition: var(--stg-transition);
}

.stg-product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--stg-shadow-xl);
}

.stg-product-image {
    aspect-ratio: 16/10;
    background: var(--stg-bg-tertiary);
    overflow: hidden;
}

.stg-product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.stg-product-content {
    padding: 24px;
}

.stg-product-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--stg-text-primary);
    margin-bottom: 8px;
}

.stg-product-excerpt {
    font-size: 14px;
    color: var(--stg-text-secondary);
    margin-bottom: 16px;
}

.stg-product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--stg-primary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
}

.stg-product-link:hover {
    text-decoration: underline;
}

/* ========================================
   更新日志
   ======================================== */
.stg-changelog {
    padding: 100px 24px;
    background: var(--stg-bg-primary);
}

.stg-changelog-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
}

.stg-changelog-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.stg-changelog-nav {
    background: var(--stg-bg-secondary);
    border-radius: var(--stg-border-radius-lg);
    padding: 24px;
    border: 1px solid var(--stg-border-color);
}

.stg-changelog-nav-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--stg-text-primary);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--stg-border-color);
}

.stg-changelog-year {
    margin-bottom: 16px;
}

.stg-changelog-year-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    cursor: pointer;
    font-weight: 500;
    color: var(--stg-text-primary);
}

.stg-changelog-year-header:hover {
    color: var(--stg-primary);
}

.stg-changelog-months {
    padding-left: 16px;
    margin-top: 8px;
}

.stg-changelog-month-link {
    display: block;
    padding: 6px 12px;
    color: var(--stg-text-secondary);
    text-decoration: none;
    font-size: 13px;
    border-radius: var(--stg-border-radius-sm);
    transition: var(--stg-transition);
}

.stg-changelog-month-link:hover,
.stg-changelog-month-link.active {
    background: var(--stg-bg-tertiary);
    color: var(--stg-primary);
}

.stg-changelog-content {
    min-height: 500px;
}

.stg-changelog-item {
    background: var(--stg-bg-primary);
    border: 1px solid var(--stg-border-color);
    border-radius: var(--stg-border-radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    transition: var(--stg-transition);
}

.stg-changelog-item:hover {
    border-color: var(--stg-primary);
    box-shadow: var(--stg-shadow);
}

.stg-changelog-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.stg-changelog-date {
    font-size: 14px;
    color: var(--stg-text-secondary);
}

.stg-changelog-version {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    background: var(--stg-gradient);
    color: white;
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
}

.stg-changelog-version.beta {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
}

.stg-changelog-version.hotfix {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.stg-changelog-body {
    font-size: 14px;
    color: var(--stg-text-secondary);
    line-height: 1.8;
}

.stg-changelog-body ul {
    list-style: none;
    padding: 0;
}

.stg-changelog-body li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.stg-changelog-body li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--stg-primary);
}

/* ========================================
   价格方案
   ======================================== */
.stg-pricing {
    padding: 100px 24px;
    background: var(--stg-bg-secondary);
}

.stg-pricing-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.stg-pricing-card {
    background: var(--stg-bg-primary);
    border-radius: var(--stg-border-radius-lg);
    padding: 32px;
    border: 1px solid var(--stg-border-color);
    transition: var(--stg-transition);
    position: relative;
}

.stg-pricing-card.featured {
    border-color: var(--stg-primary);
    box-shadow: var(--stg-shadow-xl);
    transform: scale(1.05);
    z-index: 1;
}

.stg-pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--stg-gradient);
    color: white;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 16px;
    border-radius: 100px;
}

.stg-pricing-header {
    text-align: center;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--stg-border-color);
}

.stg-pricing-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--stg-text-primary);
    margin-bottom: 8px;
}

.stg-pricing-description {
    font-size: 14px;
    color: var(--stg-text-secondary);
    margin-bottom: 16px;
}

.stg-pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.stg-pricing-amount {
    font-size: 48px;
    font-weight: 800;
    background: var(--stg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stg-pricing-period {
    font-size: 16px;
    color: var(--stg-text-secondary);
}

.stg-pricing-features {
    margin-bottom: 32px;
}

.stg-pricing-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 14px;
    color: var(--stg-text-secondary);
}

.stg-pricing-feature-icon {
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--stg-primary);
    font-size: 12px;
}

.stg-pricing-cta {
    text-align: center;
}

.stg-pricing-cta .stg-btn {
    width: 100%;
}

/* ========================================
   下载中心
   ======================================== */
.stg-downloads {
    padding: 100px 24px;
    background: var(--stg-bg-primary);
}

.stg-downloads-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stg-download-card {
    background: var(--stg-bg-primary);
    border: 1px solid var(--stg-border-color);
    border-radius: var(--stg-border-radius-lg);
    padding: 32px;
    transition: var(--stg-transition);
    display: flex;
    flex-direction: column;
}

.stg-download-card:hover {
    border-color: var(--stg-primary);
    box-shadow: var(--stg-shadow-lg);
    transform: translateY(-4px);
}

.stg-download-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.stg-download-icon {
    width: 56px;
    height: 56px;
    background: var(--stg-gradient);
    border-radius: var(--stg-border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
}

.stg-download-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--stg-text-primary);
    margin-bottom: 4px;
}

.stg-download-version {
    font-size: 13px;
    color: var(--stg-text-muted);
}

.stg-download-description {
    font-size: 14px;
    color: var(--stg-text-secondary);
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: 24px;
}

.stg-download-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-top: 20px;
    border-top: 1px solid var(--stg-border-color);
    margin-top: auto;
}

.stg-download-stats {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--stg-text-muted);
}

.stg-download-actions {
    display: flex;
    gap: 12px;
    margin-left: auto;
}

/* ========================================
   Footer
   ======================================== */
.stg-footer {
    background: var(--stg-text-primary);
    color: rgba(255, 255, 255, 0.7);
    padding: 80px 24px 40px;
}

.stg-footer-inner {
    max-width: 1280px;
    margin: 0 auto;
}

.stg-footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 48px;
    margin-bottom: 48px;
}

.stg-footer-brand {
    max-width: 300px;
}

.stg-footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: white;
    font-weight: 700;
    font-size: 20px;
    margin-bottom: 16px;
}

.stg-footer-description {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 24px;
}

.stg-footer-social {
    display: flex;
    gap: 12px;
}

.stg-social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--stg-border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--stg-transition);
}

.stg-social-link:hover {
    background: var(--stg-primary);
}

.stg-footer-column h4 {
    color: white;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stg-footer-links {
    list-style: none;
}

.stg-footer-links li {
    margin-bottom: 12px;
}

.stg-footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: var(--stg-transition);
}

.stg-footer-links a:hover {
    color: white;
}

.stg-footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
}

.stg-footer-copyright {
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .stg-features-grid,
    .stg-products-grid,
    .stg-pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stg-pricing-card.featured {
        transform: scale(1);
    }
    
    .stg-changelog-container {
        grid-template-columns: 1fr;
    }
    
    .stg-changelog-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .stg-hero-title {
        font-size: 36px;
    }
    
    .stg-hero-subtitle {
        font-size: 16px;
    }
    
    .stg-section-title {
        font-size: 28px;
    }
    
    .stg-features-grid,
    .stg-products-grid,
    .stg-pricing-grid,
    .stg-downloads-grid {
        grid-template-columns: 1fr;
    }
    
    .stg-footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .stg-nav-menu {
        display: none;
    }
    
    .stg-hero-actions {
        flex-direction: column;
    }
}

/* ========================================
   动画
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stg-animate-fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

.stg-animate-delay-1 { animation-delay: 0.1s; }
.stg-animate-delay-2 { animation-delay: 0.2s; }
.stg-animate-delay-3 { animation-delay: 0.3s; }
.stg-animate-delay-4 { animation-delay: 0.4s; }

/* 滚动显示动画 */
.stg-scroll-show {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.stg-scroll-show.visible {
    opacity: 1;
    transform: translateY(0);
}