/* ==================== SumatraPDF 官方网站全局样式 ==================== */

/* CSS Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 品牌色 - 黑黄配色 */
    --primary: rgba(255, 240, 0, 1);
    --primary-dark: rgba(230, 216, 0, 1);
    --primary-light: rgba(255, 240, 0, 0.1);
    --accent: #ffeb3b;
    --accent-dark: #ffc107;
    --bg: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-dark: #111111;
    --text-primary: #111111;
    --text-secondary: #555555;
    --text-light: #888888;
    --border: #e0e0e0;
    --border-dark: #ccc;
    
    /* 尺寸 */
    --container: 1200px;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* 容器 */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg);
    border-bottom: 2px solid var(--primary);
    box-shadow: var(--shadow);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #111;
    font-size: 18px;
    font-weight: 700;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: #000;
}

.logo-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: block;
    line-height: 1.2;
}

.nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 8px 16px;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.nav a:hover,
.nav a.active {
    color: var(--text-primary);
    background: rgba(255, 240, 0, 0.2);
}

.nav-cta {
    margin-left: 12px;
    background: var(--primary) !important;
    color: #111 !important;
    font-weight: 600;
}

.nav-cta:hover {
    background: var(--primary-dark) !important;
}

/* 汉堡菜单（移动端） */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    margin: 5px 0;
    border-radius: 2px;
    transition: 0.3s;
}

/* Hero 区域 */
.hero {
    background: linear-gradient(135deg, #111111 0%, #222222 50%, #111111 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::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='%23ffff00' 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 {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 1.2rem;
    color: #888;
    max-width: 680px;
    margin: 0 auto 32px;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.badge {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: #111;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 240, 0, 0.4);
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.2);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* 通用区块 */
.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--bg-secondary);
}

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

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto;
}

/* 功能卡片网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s;
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 240, 0, 0.15);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
    color: var(--primary-dark);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 对比表格 */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.compare-table th,
.compare-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.compare-table th {
    background: var(--bg-dark);
    color: var(--primary);
    font-weight: 600;
}

.compare-table tr:last-child td {
    border-bottom: none;
}

.compare-table tr:hover td {
    background: var(--bg-secondary);
}

.compare-table .check {
    color: var(--accent);
    font-weight: 700;
}

.compare-table .cross {
    color: var(--text-light);
}

/* 版本卡片 */
.version-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.version-card {
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    position: relative;
    transition: all 0.3s;
}

.version-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.version-card.recommended {
    border-color: var(--primary);
}

.version-card.recommended::before {
    content: '推荐版本';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #111;
    padding: 4px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

.version-badge {
    display: inline-block;
    background: rgba(255, 240, 0, 0.15);
    color: #111;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.version-card h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.version-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.version-size {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.version-size small {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.version-note {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 24px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #111;
    padding: 12px 32px;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
}

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

/* FAQ 手风琴 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: var(--bg);
    border: none;
    padding: 20px 24px;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s;
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question i {
    transition: transform 0.3s;
    color: var(--text-secondary);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 24px 20px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.faq-item.active .faq-answer {
    display: block;
}

/* 新闻列表 */
.news-list {
    max-width: 900px;
    margin: 0 auto;
}

.news-item {
    display: flex;
    gap: 24px;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
    transition: all 0.3s;
}

.news-item:hover {
    background: rgba(255, 240, 0, 0.05);
    margin: 0 -20px;
    padding: 24px 20px;
    border-radius: var(--radius);
}

.news-date {
    flex-shrink: 0;
    width: 80px;
    text-align: center;
    padding: 12px;
    background: var(--primary);
    border-radius: var(--radius);
}

.news-date .day {
    font-size: 1.75rem;
    font-weight: 700;
    color: #111;
    line-height: 1;
}

.news-date .month {
    font-size: 0.8rem;
    color: #111;
    text-transform: uppercase;
}

.news-content h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.news-content h3 a {
    color: var(--text-primary);
    text-decoration: none;
}

.news-content h3 a:hover {
    color: var(--primary-dark);
}

.news-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.news-tag {
    display: inline-block;
    background: var(--primary);
    color: #111;
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-top: 12px;
    font-weight: 600;
}

.news-tag.tag-announcement {
    background: #ff5722;
    color: white;
}

.news-tag.tag-update {
    background: #4caf50;
    color: white;
}

.news-tag.tag-security {
    background: #f44336;
    color: white;
}

.news-tag.tag-tips {
    background: #2196f3;
    color: white;
}

/* 新闻卡片网格 */
.news-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.news-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s;
}

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

.news-card-image {
    height: 180px;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #333 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: var(--primary);
}

.news-card-body {
    padding: 24px;
}

.news-card-body h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-card-body h3 a {
    color: var(--text-primary);
    text-decoration: none;
}

.news-card-body h3 a:hover {
    color: var(--primary-dark);
}

.news-card-body p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.news-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-light);
}

.news-card-meta i {
    margin-right: 4px;
}

/* 文档列表 */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.doc-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-decoration: none;
    transition: all 0.3s;
}

.doc-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.doc-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 240, 0, 0.15);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 20px;
    color: var(--primary-dark);
}

.doc-card h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.doc-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: #888;
    padding: 60px 0 30px;
}

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

.footer-brand p {
    margin-top: 16px;
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer h4 {
    color: var(--primary);
    font-size: 1rem;
    margin-bottom: 20px;
}

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

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

.footer-links a {
    color: #888;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: #888;
    text-decoration: none;
}

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

/* 面包屑导航 */
.breadcrumb {
    padding: 24px 0;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--primary-dark);
}

.breadcrumb span {
    color: var(--text-light);
    margin: 0 8px;
}

/* 页面标题区 */
.page-hero {
    background: linear-gradient(135deg, #111111 0%, #222222 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 1.1rem;
    color: #888;
}

/* 快捷键表格 */
.shortcuts-table {
    width: 100%;
    border-collapse: collapse;
}

.shortcuts-table th,
.shortcuts-table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    text-align: left;
}

.shortcuts-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

.shortcuts-table tr:hover td {
    background: var(--bg-secondary);
}

.key {
    display: inline-block;
    background: var(--bg-dark);
    color: var(--primary);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: "Consolas", monospace;
}

/* 弹窗遮罩 */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg);
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 600px;
    width: 90%;
    position: relative;
    text-align: center;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    transition: background 0.2s;
}

.modal-close:hover {
    background: var(--bg-secondary);
}

.modal h2 {
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.modal > p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.qr-codes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

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

.qr-box {
    background: white;
    padding: 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    display: inline-block;
    margin-bottom: 12px;
}

.qr-box img {
    width: 160px;
    height: 160px;
    display: block;
}

.qr-item h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.qr-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 联系表单 */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-info h3 {
    font-size: 1.25rem;
    margin-bottom: 20px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background: rgba(255, 240, 0, 0.15);
    color: var(--primary-dark);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.contact-form {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: var(--radius-lg);
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 统计数字 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.stat-item {
    text-align: center;
    padding: 32px 16px;
    background: var(--bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-dark);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 新闻过滤器 */
.news-filters {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    padding: 8px 20px;
    border: 1px solid var(--border);
    background: var(--bg);
    border-radius: 50px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #111;
    font-weight: 600;
}

/* 新闻详情页 */
.news-detail {
    max-width: 800px;
    margin: 0 auto;
}

.news-detail-header {
    margin-bottom: 32px;
}

.news-detail-header .news-tag {
    margin-bottom: 16px;
}

.news-detail-header h1 {
    font-size: 2rem;
    margin-bottom: 16px;
    line-height: 1.4;
}

.news-meta {
    display: flex;
    gap: 24px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.news-meta i {
    margin-right: 6px;
}

.news-detail-content {
    font-size: 1.05rem;
    line-height: 1.8;
}

.news-detail-content p {
    margin-bottom: 16px;
}

.news-detail-content h2 {
    font-size: 1.5rem;
    margin: 32px 0 16px;
}

.news-detail-content ul,
.news-detail-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

.news-detail-content li {
    margin-bottom: 8px;
}

.news-detail-content code {
    background: var(--bg-secondary);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: "Consolas", monospace;
}

.news-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.news-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
}

.news-nav a:hover {
    color: var(--primary-dark);
}

.news-nav .prev i,
.news-nav .next i {
    margin-right: 8px;
}

/* 响应式 */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 20px;
        border-bottom: 2px solid var(--primary);
        box-shadow: var(--shadow);
    }
    
    .nav.active {
        display: flex;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .contact-section {
        grid-template-columns: 1fr;
    }
    
    .news-item {
        flex-direction: column;
        gap: 16px;
    }
    
    .news-meta {
        flex-direction: column;
        gap: 8px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-badges {
        flex-direction: column;
        gap: 12px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .version-grid {
        grid-template-columns: 1fr;
    }
    
    .qr-codes {
        grid-template-columns: 1fr;
    }
}