/* =============================================
   Firefox 官网模板 - 主样式文件
   遵循 Mozilla 设计规范，符合 Google SEO 标准
   ============================================= */

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

:root {
    --color-primary: #592acb;
    --color-primary-hover: #7542e5;
    --color-dark-bg: #20123a;
    --color-dark-bg-2: #1c1033;
    --color-purple-mid: #3d1a78;
    --color-light-bg: #f9f9fb;
    --color-white: #ffffff;
    --color-text-dark: #15141a;
    --color-text-mid: #5b5b66;
    --color-border: #e0e0e6;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-display: "Zilla Slab", Georgia, serif;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 24px rgba(0,0,0,0.12);
    --transition: 0.2s ease;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-text-dark);
    line-height: 1.6;
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* --- Container --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--color-white);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(89,42,203,0.4);
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
    border-radius: 40px;
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
    text-decoration: none;
}

.btn-text {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.btn-text:hover {
    color: var(--color-primary-hover);
}

.icon-download {
    font-size: 18px;
}

/* --- Typography Utilities --- */
.text-center { text-align: center; }

/* --- Light Background Sections --- */
.light-bg {
    background: var(--color-light-bg);
}

/* =============================================
   HEADER
   ============================================= */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-dark-bg-2);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding: 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 32px;
}

.logo a {
    display: flex;
    align-items: center;
}

.logo img {
    height: 34px;
    width: auto;
}

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

.main-nav ul li a {
    color: rgba(255,255,255,0.85);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all var(--transition);
}

.main-nav ul li a:hover,
.main-nav ul li a.active {
    color: var(--color-white);
    background: rgba(255,255,255,0.1);
    text-decoration: none;
}

.header-action .btn-primary {
    font-size: 14px;
    padding: 10px 20px;
}

/* =============================================
   BREADCRUMBS
   ============================================= */
.breadcrumbs {
    background: var(--color-light-bg);
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 13px;
    color: var(--color-text-mid);
}

.breadcrumbs a {
    color: var(--color-text-mid);
}

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

.breadcrumbs span {
    color: var(--color-text-dark);
}

/* =============================================
   HERO SECTION
   ============================================= */
.hero-section {
    background: var(--color-dark-bg);
    background-image: radial-gradient(ellipse at 60% 40%, #3d1a78 0%, #20123a 60%);
    color: var(--color-white);
    padding: 80px 0 100px;
    overflow: hidden;
    position: relative;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('../images/hero-bg-pattern.svg') no-repeat center bottom;
    background-size: cover;
    opacity: 0.15;
    pointer-events: none;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto 40px;
    color: rgba(255,255,255,0.85);
}

.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 60px;
}

.link-privacy {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    text-decoration: underline;
}

.link-privacy:hover {
    color: var(--color-white);
}

/* Hero Slider */
.hero-slider {
    display: flex;
    gap: 16px;
    justify-content: center;
    overflow: hidden;
    margin-top: 40px;
}

.slide-item {
    flex: 0 0 auto;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.slide-item img {
    width: 300px;
    height: 200px;
    object-fit: cover;
}

/* =============================================
   FEATURES GRID
   ============================================= */
.features-grid {
    padding: 80px 0;
    background: var(--color-dark-bg-2);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    color: var(--color-white);
    transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.feature-tag {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 12px;
}

.feature-card h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
}

.feature-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-privacy { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.icon-focus   { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.icon-choice  { background: linear-gradient(135deg, #f59e0b, #d97706); }
.icon-independent { background: linear-gradient(135deg, #10b981, #059669); }

/* =============================================
   SWITCH SECTION
   ============================================= */
.switch-section {
    padding: 100px 0;
    background: var(--color-dark-bg);
    color: var(--color-white);
}

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

.section-header h2 {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.15;
}

.section-header p {
    font-size: 18px;
    color: rgba(255,255,255,0.75);
    max-width: 560px;
    margin: 0 auto;
}

.steps-container {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 60px;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 32px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
}

.step-item.active {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
}

.step-num {
    font-size: 24px;
    font-weight: 700;
    color: rgba(255,255,255,0.4);
}

.step-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
}

.switch-image {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(0,0,0,0.4);
}

/* =============================================
   PRIVACY SECTION
   ============================================= */
.privacy-section {
    padding: 100px 0;
}

.privacy-image {
    max-width: 600px;
    margin: 0 auto 40px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.privacy-desc {
    font-size: 18px;
    color: var(--color-text-mid);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.7;
}

/* =============================================
   SYNC SECTION
   ============================================= */
.sync-section {
    padding: 100px 0;
    background: var(--color-white);
}

.sync-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.sync-content h2 {
    font-size: clamp(28px, 3vw, 40px);
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.sync-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text-mid);
}

.sync-content p {
    font-size: 16px;
    color: var(--color-text-mid);
    line-height: 1.7;
}

.sync-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

/* =============================================
   PRODUCTIVITY SECTION
   ============================================= */
.productivity-section {
    padding: 100px 0;
}

.productivity-section .section-header h2 {
    color: var(--color-text-dark);
}

.productivity-section .section-header p {
    color: var(--color-text-mid);
}

.prod-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 60px;
}

.prod-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 40px 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.prod-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text-dark);
}

.prod-card p {
    font-size: 15px;
    color: var(--color-text-mid);
    line-height: 1.7;
}

.prod-card ul {
    list-style: disc;
    padding-left: 20px;
}

.prod-card ul li {
    font-size: 15px;
    color: var(--color-text-mid);
    margin-bottom: 8px;
    line-height: 1.6;
}

/* =============================================
   BOTTOM CTA
   ============================================= */
.bottom-cta {
    padding: 100px 0;
    background: var(--color-dark-bg);
    color: var(--color-white);
}

.bottom-cta h2 {
    font-size: clamp(32px, 4vw, 56px);
    font-weight: 700;
    margin-bottom: 40px;
}

.cta-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 32px;
}

/* =============================================
   NEWS SECTION
   ============================================= */
.news-section {
    padding: 80px 0;
    background: var(--color-light-bg);
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--color-text-dark);
}

.news-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.news-item {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: transform var(--transition);
}

.news-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.news-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.4;
}

.news-item h4 a {
    color: var(--color-text-dark);
}

.news-item h4 a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.news-item time {
    font-size: 13px;
    color: var(--color-text-mid);
}

/* =============================================
   LIST PAGE
   ============================================= */
.page-content {
    min-height: 60vh;
}

.list-section {
    padding: 60px 0 80px;
}

.page-header {
    margin-bottom: 48px;
}

.page-title {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-dark);
}

.page-subtitle {
    font-size: 18px;
    color: var(--color-text-mid);
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.list-item {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}

.list-item:hover {
    box-shadow: var(--shadow-md);
}

.item-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.item-content {
    padding: 28px 32px 28px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
}

.item-title {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.3;
}

.item-title a {
    color: var(--color-text-dark);
}

.item-title a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.item-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--color-text-mid);
}

.item-desc {
    font-size: 15px;
    color: var(--color-text-mid);
    line-height: 1.7;
}

.btn-readmore {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    align-self: flex-start;
}

.btn-readmore:hover {
    color: var(--color-primary-hover);
    text-decoration: none;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 48px;
}

.pagination .page-current,
.pagination .page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
}

.pagination .page-current {
    background: var(--color-primary);
    color: var(--color-white);
}

.pagination .page-link {
    color: var(--color-text-dark);
    border: 1px solid var(--color-border);
}

.pagination .page-link:hover {
    background: var(--color-light-bg);
    text-decoration: none;
}

/* =============================================
   ARTICLE DETAIL PAGE
   ============================================= */
.article-detail {
    padding: 60px 0 80px;
}

.article-container {
    max-width: 860px;
}

.article-header {
    margin-bottom: 40px;
}

.article-title {
    font-size: clamp(26px, 4vw, 42px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--color-text-dark);
}

.article-meta {
    display: flex;
    gap: 24px;
    font-size: 14px;
    color: var(--color-text-mid);
    flex-wrap: wrap;
}

.article-featured-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 40px;
}

.article-featured-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.article-content {
    font-size: 17px;
    line-height: 1.8;
    color: var(--color-text-dark);
    margin-bottom: 40px;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 700;
    margin: 40px 0 16px;
}

.article-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 32px 0 12px;
}

.article-content p {
    margin-bottom: 20px;
}

.article-content ul, .article-content ol {
    padding-left: 24px;
    margin-bottom: 20px;
}

.article-content li {
    margin-bottom: 8px;
    list-style: disc;
}

.article-tags {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    padding: 20px 0;
    border-top: 1px solid var(--color-border);
    font-size: 14px;
}

.article-tags a {
    background: var(--color-light-bg);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--color-text-mid);
    border: 1px solid var(--color-border);
}

.article-tags a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    text-decoration: none;
}

/* Related Articles */
.related-articles {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid var(--color-border);
}

.related-articles h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 32px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.related-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: transform var(--transition);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.related-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.related-card h4 {
    padding: 16px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
}

.related-card a {
    color: var(--color-text-dark);
    display: block;
}

.related-card a:hover {
    text-decoration: none;
}

.related-card a:hover h4 {
    color: var(--color-primary);
}

/* =============================================
   DOWNLOAD PAGE
   ============================================= */
.download-page .download-hero {
    background: var(--color-dark-bg);
    background-image: radial-gradient(ellipse at 50% 30%, #3d1a78 0%, #20123a 70%);
    color: var(--color-white);
    padding: 80px 0 100px;
}

.hero-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 32px;
}

.main-download-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: 40px;
}

.download-meta {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
}

.link-advanced {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    text-decoration: underline;
}

.link-advanced:hover {
    color: var(--color-white);
}

.platforms-section {
    padding: 80px 0;
}

.platforms-section .section-header h2 {
    color: var(--color-text-dark);
}

.platforms-section .section-header p {
    color: var(--color-text-mid);
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-top: 48px;
}

.platform-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 32px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: transform var(--transition);
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.platform-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    border-radius: 12px;
    background: var(--color-light-bg);
}

.platform-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}

.special-editions {
    padding: 80px 0;
}

.special-editions .section-header h2 {
    color: var(--color-text-dark);
}

.editions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.edition-card {
    background: var(--color-light-bg);
    border-radius: var(--radius-md);
    padding: 40px 32px;
    border: 1px solid var(--color-border);
    transition: transform var(--transition);
}

.edition-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.edition-card img {
    width: 64px;
    height: 64px;
    margin-bottom: 24px;
}

.edition-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.edition-card p {
    font-size: 15px;
    color: var(--color-text-mid);
    line-height: 1.7;
    margin-bottom: 24px;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
}

.faq-section h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 48px;
    color: var(--color-text-dark);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.faq-item {
    padding: 28px 0;
    border-bottom: 1px solid var(--color-border);
}

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

.faq-item h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-dark);
}

.faq-item p {
    font-size: 16px;
    color: var(--color-text-mid);
    line-height: 1.7;
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
    background: var(--color-dark-bg-2);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-col h4 {
    color: var(--color-white);
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.65);
    font-size: 14px;
    transition: color var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-white);
    text-decoration: none;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 32px 0;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-logo img {
    filter: brightness(0) invert(1);
    opacity: 0.7;
}

.footer-legal p {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 8px;
}

.legal-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.legal-links li a {
    font-size: 12px;
    color: rgba(255,255,255,0.5);
}

.legal-links li a:hover {
    color: var(--color-white);
    text-decoration: none;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .platform-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .sync-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 0;
    }
    
    .main-nav {
        order: 3;
        width: 100%;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .list-item {
        grid-template-columns: 1fr;
    }
    
    .item-image img {
        height: 200px;
    }
    
    .item-content {
        padding: 20px;
    }
    
    .prod-grid {
        grid-template-columns: 1fr;
    }
    
    .editions-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-container {
        flex-direction: column;
    }
    
    .news-list {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .btn-large {
        padding: 14px 28px;
        font-size: 16px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* =============================================
   ACCESSIBILITY
   ============================================= */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* =============================================
   DATA PROTECT SECTION
   ============================================= */
.data-protect-section {
    padding: 80px 0;
    background: var(--color-white);
}

.data-protect-inner {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.data-protect-text h2 {
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text-dark);
}

.data-protect-text p {
    font-size: 17px;
    color: var(--color-text-mid);
    line-height: 1.7;
    margin-bottom: 24px;
}

/* =============================================
   MOBILE MENU TOGGLE
   ============================================= */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: all var(--transition);
}

/* Header scrolled state */
.site-header.scrolled {
    box-shadow: 0 2px 16px rgba(0,0,0,0.3);
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .main-nav {
        display: none;
        width: 100%;
        order: 4;
    }
    
    .main-nav.open {
        display: block;
    }
    
    .main-nav ul {
        flex-direction: column;
        padding: 8px 0 16px;
    }
}

/* =============================================
   PRINT STYLES
   ============================================= */
@media print {
    .site-header,
    .site-footer,
    .hero-slider,
    .bottom-cta {
        display: none;
    }
}