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

:root {
    --primary-blue: #4285F4;
    --primary-red: #EA4335;
    --primary-yellow: #FBBC04;
    --primary-green: #34A853;
    --text-dark: #202124;
    --text-gray: #5f6368;
    --bg-light: #f8f9fa;
    --border-color: #dadce0;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: white;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.main-nav {
    background: white;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    display: block;
    padding: 8px 16px;
    color: var(--text-gray);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s;
}

.nav-links a:hover {
    background: var(--bg-light);
    color: var(--text-dark);
}

.nav-links a.active {
    background: var(--primary-blue);
    color: white;
}

.hero-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f0fe 100%);
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: 24px;
    color: var(--primary-blue);
    margin-bottom: 12px;
    font-weight: 500;
}

.hero-description {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: #1a73e8;
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    padding: 14px 28px;
    background: white;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: white;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-item strong {
    font-size: 32px;
    color: var(--primary-blue);
    font-weight: 700;
}

.stat-item span {
    font-size: 14px;
    color: var(--text-gray);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.browser-mockup {
    width: 100%;
    max-width: 500px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    overflow: hidden;
}

.browser-header {
    background: #f1f3f4;
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.browser-dots {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.browser-tabs {
    margin-bottom: 8px;
}

.tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: white;
    border-radius: 8px 8px 0 0;
    font-size: 13px;
    color: var(--text-dark);
}

.browser-address {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: white;
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-gray);
}

.browser-content {
    padding: 40px 20px;
    min-height: 300px;
    background: white;
}

.content-placeholder {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.placeholder-line {
    height: 12px;
    background: var(--bg-light);
    border-radius: 6px;
}

.placeholder-line.short {
    width: 60%;
}

.placeholder-box {
    height: 200px;
    background: var(--bg-light);
    border-radius: 8px;
    margin-top: 16px;
}

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

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 48px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.feature-card {
    padding: 32px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s;
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    border-radius: 12px;
    margin-bottom: 20px;
    color: white;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.6;
}

.platforms-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.platform-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

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

.platform-icon {
    margin-bottom: 20px;
    color: var(--primary-blue);
}

.platform-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.platform-card p {
    color: var(--text-gray);
    margin-bottom: 20px;
}

.btn-download {
    width: 100%;
    padding: 12px 24px;
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-download:hover {
    background: #1a73e8;
}

.btn-download:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

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

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.review-card {
    background: white;
    padding: 28px;
    border-left: 4px solid var(--primary-blue);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.review-stars {
    color: var(--primary-yellow);
    font-size: 18px;
    margin-bottom: 16px;
}

.review-text {
    color: var(--text-gray);
    margin-bottom: 16px;
    line-height: 1.6;
}

.review-author strong {
    display: block;
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 4px;
}

.review-author span {
    color: var(--text-gray);
    font-size: 14px;
}

.faq-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.faq-list {
    max-width: 900px;
    margin: 48px auto 0;
}

.faq-item {
    background: white;
    margin-bottom: 16px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    cursor: pointer;
    transition: background 0.2s;
}

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

.faq-question h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-dark);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform 0.3s;
    color: var(--primary-blue);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-gray);
    line-height: 1.6;
}

.download-hero {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    color: white;
}

.download-hero-content {
    text-align: center;
}

.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: rgba(255,255,255,0.2);
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 20px;
}

.download-hero h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
}

.download-subtitle {
    font-size: 18px;
    opacity: 0.9;
}

.download-main-section {
    padding: 60px 0;
}

.download-primary {
    margin-bottom: 60px;
}

.platform-highlight {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.platform-highlight-header {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 40px;
    background: linear-gradient(135deg, #f8f9fa, #e8f0fe);
}

.platform-highlight-icon {
    color: var(--primary-blue);
}

.platform-highlight-info h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.platform-highlight-info p {
    color: var(--text-gray);
    margin-bottom: 12px;
}

.platform-tags {
    display: flex;
    gap: 8px;
}

.tag {
    padding: 4px 12px;
    background: var(--primary-blue);
    color: white;
    border-radius: 12px;
    font-size: 13px;
}

.platform-highlight-body {
    padding: 40px;
}

.download-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.info-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.info-item svg {
    flex-shrink: 0;
    color: var(--primary-blue);
    margin-top: 2px;
}

.info-item strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.info-item span {
    font-size: 14px;
    color: var(--text-gray);
}

.btn-download-large {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 32px;
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: var(--shadow);
}

.btn-download-large:hover {
    background: #1a73e8;
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-download-large:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.download-note {
    text-align: center;
    color: var(--text-gray);
    font-size: 14px;
    margin-top: 16px;
}

.download-other-platforms {
    margin-bottom: 60px;
}

.platforms-download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.platform-download-card {
    background: white;
    padding: 32px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.platform-download-icon {
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.platform-download-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
    text-align: center;
}

.platform-desc {
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 20px;
    font-size: 14px;
}

.platform-features {
    list-style: none;
    margin-bottom: 24px;
}

.platform-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    color: var(--text-gray);
    font-size: 14px;
}

.platform-features svg {
    color: var(--primary-green);
    flex-shrink: 0;
}

.btn-platform-download {
    width: 100%;
    padding: 12px 24px;
    background: white;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-platform-download:hover {
    background: var(--primary-blue);
    color: white;
}

.btn-platform-download:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.system-requirements-section {
    padding: 60px 0;
    background: var(--bg-light);
}

.requirements-tabs {
    max-width: 900px;
    margin: 32px auto 0;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.tabs-header {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    background: white;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-gray);
    transition: all 0.2s;
}

.tab-btn:hover {
    background: var(--bg-light);
}

.tab-btn.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.tabs-content {
    padding: 32px;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.requirements-table {
    width: 100%;
    border-collapse: collapse;
}

.requirements-table tr {
    border-bottom: 1px solid var(--border-color);
}

.requirements-table th {
    text-align: left;
    padding: 16px;
    font-weight: 600;
    color: var(--text-dark);
    width: 30%;
}

.requirements-table td {
    padding: 16px;
    color: var(--text-gray);
}

.installation-guide-section {
    padding: 60px 0;
}

.installation-steps {
    max-width: 900px;
    margin: 32px auto 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.step-card {
    display: flex;
    gap: 24px;
    padding: 28px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-blue);
    color: white;
    border-radius: 50%;
    font-size: 20px;
    font-weight: 700;
}

.step-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.step-content p {
    color: var(--text-gray);
    line-height: 1.6;
}

.security-notice-section {
    padding: 60px 0;
    background: var(--bg-light);
}

.security-notice {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    gap: 32px;
    padding: 40px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.security-icon {
    flex-shrink: 0;
    color: var(--primary-green);
}

.security-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.security-content p {
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 20px;
}

.security-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    list-style: none;
}

.security-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-gray);
}

.security-features svg {
    color: var(--primary-green);
    flex-shrink: 0;
}

.article-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
}

.article-sidebar {
    position: sticky;
    top: 84px;
    height: fit-content;
}

.toc-wrapper {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow);
}

.toc-wrapper h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.toc {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.toc-link {
    padding: 8px 12px;
    color: var(--text-gray);
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.2s;
}

.toc-link:hover {
    background: var(--bg-light);
    color: var(--text-dark);
}

.toc-link.active {
    background: var(--primary-blue);
    color: white;
}

.article-content {
    max-width: 800px;
}

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

.article-header h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

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

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-section {
    margin-bottom: 48px;
}

.article-section h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-blue);
}

.article-section h3 {
    font-size: 20px;
    font-weight: 600;
    margin: 24px 0 12px;
    color: var(--text-dark);
}

.article-section p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 16px;
}

.article-section ul,
.article-section ol {
    margin-bottom: 16px;
    padding-left: 24px;
    color: var(--text-gray);
}

.article-section li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.highlight-box {
    background: linear-gradient(135deg, #e8f0fe, #f8f9fa);
    padding: 24px;
    border-radius: 12px;
    border-left: 4px solid var(--primary-blue);
    margin: 24px 0;
}

.highlight-box h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.highlight-box ul {
    list-style: none;
    padding: 0;
}

.highlight-box li {
    padding: 8px 0;
    color: var(--text-gray);
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin: 24px 0;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.comparison-table thead {
    background: var(--primary-blue);
    color: white;
}

.comparison-table th {
    padding: 16px;
    text-align: left;
    font-weight: 600;
}

.comparison-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table tbody tr:hover {
    background: var(--bg-light);
}

.table-note {
    font-size: 14px;
    color: var(--text-gray);
    font-style: italic;
    margin-top: 12px;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.tip-card {
    background: white;
    padding: 24px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.tip-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.tip-card ul {
    list-style: none;
    padding: 0;
}

.tip-card li {
    padding: 8px 0;
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.6;
}

.updates-timeline {
    margin-top: 24px;
}

.update-item {
    position: relative;
    padding-left: 40px;
    padding-bottom: 32px;
    border-left: 2px solid var(--border-color);
}

.update-item:last-child {
    border-left-color: transparent;
}

.update-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    background: var(--primary-blue);
    border-radius: 50%;
}

.update-version {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 4px;
}

.update-date {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 12px;
}

.update-content ul {
    list-style: none;
    padding: 0;
}

.update-content li {
    padding: 6px 0;
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.6;
}

.cta-section {
    margin: 60px 0;
    padding: 48px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    border-radius: 16px;
    text-align: center;
    color: white;
}

.cta-content h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.cta-content p {
    font-size: 18px;
    margin-bottom: 28px;
    opacity: 0.9;
}

.btn-cta {
    display: inline-block;
    padding: 16px 40px;
    background: white;
    color: var(--primary-blue);
    text-decoration: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.3);
}

.main-footer {
    background: var(--text-dark);
    color: white;
    padding: 40px 0;
    margin-top: 80px;
}

.footer-content {
    text-align: center;
}

.footer-security {
    font-size: 15px;
    margin-bottom: 12px;
    opacity: 0.9;
}

.footer-copyright {
    font-size: 14px;
    opacity: 0.7;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
    }
    
    .article-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-text h1 {
        font-size: 36px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .features-grid,
    .platforms-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-highlight-header {
        flex-direction: column;
        text-align: center;
    }
    
    .download-info-grid {
        grid-template-columns: 1fr;
    }
    
    .platforms-download-grid {
        grid-template-columns: 1fr;
    }
    
    .tabs-header {
        flex-direction: column;
    }
    
    .security-notice {
        flex-direction: column;
    }
    
    .security-features {
        grid-template-columns: 1fr;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        gap: 4px;
    }
    
    .nav-links a {
        padding: 6px 12px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .article-header h1 {
        font-size: 28px;
    }
    
    .cta-content h2 {
        font-size: 24px;
    }
}