* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --primary: #e65100;
    --primary-dark: #bf360c;
    --secondary: #00c853;
    --accent: #ffab00;
    --text: #202124;
    --text-light: #5f6368;
    --bg: #ffffff;
    --bg-light: #fff8e1;
    --border: #ffe0b2;
    --shadow: 0 1px 2px 0 rgba(230,81,0,0.2), 0 1px 3px 1px rgba(230,81,0,0.15);
    --shadow-lg: 0 4px 8px 3px rgba(230,81,0,0.15), 0 1px 1px 0 rgba(230,81,0,0.1);
    --radius: 8px;
    --radius-lg: 16px;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

/* Header */
.header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}
.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    font-weight: 700;
}
.nav {
    display: flex;
    gap: 32px;
}
.nav a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}
.nav a:hover {
    color: var(--primary);
}
.lang-switcher {
    display: flex;
    gap: 8px;
    align-items: center;
}
.lang-switcher a {
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-light);
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}
.lang-switcher a:hover {
    color: var(--primary);
    background: var(--bg-light);
}
.lang-switcher a.active {
    color: var(--primary);
    background: var(--bg-light);
}

/* Article */
.article {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px 24px;
}
.article-header {
    text-align: center;
    margin-bottom: 48px;
}
.article-meta {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
}
.category {
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}
.date {
    color: var(--text-light);
    font-size: 14px;
}
.article h1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
}
.article-subtitle {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Article Content */
.article-content h2 {
    font-size: 28px;
    font-weight: 700;
    margin: 48px 0 24px;
    color: var(--text);
}
.article-content h3 {
    font-size: 22px;
    font-weight: 600;
    margin: 32px 0 16px;
    color: var(--text);
}
.article-content h4 {
    font-size: 18px;
    font-weight: 600;
    margin: 24px 0 12px;
    color: var(--text);
}
.article-content p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 16px;
    color: var(--text);
}
.article-content ul, .article-content ol {
    margin: 16px 0;
    padding-left: 24px;
}
.article-content li {
    margin-bottom: 8px;
    line-height: 1.6;
}
.article-content strong {
    color: var(--primary-dark);
    font-weight: 600;
}

/* Tables */
.comparison-table, .summary-table {
    margin: 24px 0;
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}
th {
    background: var(--primary);
    color: white;
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
}
td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
tr:hover {
    background: var(--bg-light);
}
tr.highlight {
    background: var(--bg-light);
    border-left: 3px solid var(--primary);
}
tr.highlight td {
    font-weight: 500;
}

/* Ticket Example */
.ticket-example {
    background: #f8f9fa;
    border-radius: var(--radius);
    padding: 24px;
    margin: 24px 0;
    border-left: 3px solid var(--primary);
}
.ticket-example pre {
    background: white;
    padding: 16px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.4;
    overflow-x: auto;
    margin: 16px 0;
}

/* Data Box */
.data-box {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 24px 0;
}
.data-box ul {
    list-style: none;
    padding: 0;
}
.data-box li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}
.data-box li:last-child {
    border-bottom: none;
}

/* Recommendation */
.recommendation {
    background: linear-gradient(135deg, var(--bg-light) 0%, #ffffff 100%);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 24px 0;
}
.recommendation p {
    margin-bottom: 12px;
}
.recommendation p:last-child {
    margin-bottom: 0;
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

/* Article Card */
.article-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}
.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.article-card .article-image {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0;
    margin: 0;
}
.article-card .article-image .image-title {
    color: white;
    font-weight: 700;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.8);
    background: rgba(0,0,0,0.6);
    padding: 8px 16px;
    border-radius: 4px;
    display: inline-block;
}
.article-card .article-content {
    padding: 20px;
}
.article-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.3;
}
.article-card h3 a {
    color: var(--text);
    text-decoration: none;
}
.article-card h3 a:hover {
    color: var(--primary);
}
.article-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.5;
    margin-bottom: 12px;
}
.article-card .article-meta {
    display: flex;
    gap: 8px;
    align-items: center;
}
.article-card .tag {
    background: var(--bg-light);
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}
.article-card .date {
    color: var(--text-light);
    font-size: 12px;
}

/* Category Section */
.category-section {
    margin-bottom: 48px;
}
.category-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text);
}

/* Articles Inner */
.articles-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 24px;
}
.articles-inner h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}
.articles-inner > p {
    color: var(--text-light);
    margin-bottom: 32px;
}
.article-image {
    width: 100%;
    height: 400px;
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-lg);
    margin: 24px 0;
}
.article-image-caption {
    text-align: center;
    color: var(--text-light);
    font-size: 14px;
    margin-top: -16px;
    margin-bottom: 24px;
}

/* Quick Summary */
.quick-summary {
    background: var(--primary);
    color: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 24px 0;
}
.quick-summary h3 {
    color: white;
    margin-top: 0;
}
.quick-summary ul {
    list-style: none;
    padding: 0;
}
.quick-summary li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}
.quick-summary li:last-child {
    border-bottom: none;
}

/* Tags */
.article-footer {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.article-footer p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 16px;
}
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag {
    background: var(--bg-light);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

/* Footer */
.footer {
    background: var(--text);
    color: white;
    padding: 48px 24px;
    text-align: center;
}
.footer p {
    opacity: 0.7;
    font-size: 14px;
}

@media (max-width: 768px) {
    .article h1 { font-size: 28px; }
    .article-content h2 { font-size: 24px; }
    .nav { display: none; }
    .article { padding: 24px 16px; }
    .article-image { height: 250px; }
}