:root {
    color-scheme: light;
    --color-bg: #ffffff;
    --color-surface: #f8f9fa;
    --color-surface-alt: #eef4ff;
    --color-border: #e9ecef;
    --color-text: #1a1a2e;
    --color-text-secondary: #6c757d;
    --color-text-muted: #6c757d;
    --color-primary: #0d6efd;
    --color-primary-hover: #0b5ed7;
    --color-accent: #25d366;
    --color-danger: #c81e1e;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1120px;
    --radius: 12px;
    --shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font);
    color: var(--color-text);
    background:
        radial-gradient(circle at top right, rgba(37, 211, 102, 0.12), transparent 24%),
        linear-gradient(180deg, #ffffff 0%, #f7fbff 52%, #ffffff 100%);
    line-height: 1.65;
}

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

a:hover {
    text-decoration: underline;
}

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

.container {
    width: min(var(--max-width), calc(100% - 40px));
    margin: 0 auto;
}

.nav {
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    padding: 0 24px;
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    line-height: 0;
}

.nav-logo img {
    display: block;
    height: 36px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

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

.nav-lang {
    display: flex;
    gap: 6px;
    margin-left: 12px;
}

.nav-lang a {
    font-size: 0.8rem;
    padding: 4px 8px;
    border-radius: 6px;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.nav-lang a:hover,
.nav-lang a.active {
    background: var(--color-surface);
    text-decoration: none;
    color: var(--color-text);
}

.hero {
    padding: 72px 0 40px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
    gap: 28px;
    align-items: stretch;
}

.hero-copy,
.hero-panel,
.card,
.article-shell,
.related-card {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(22, 32, 51, 0.08);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero-copy {
    padding: 40px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-radius: 999px;
    padding: 8px 14px;
    background: var(--color-surface-alt);
    color: var(--color-primary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero h1,
.article-header h1 {
    margin: 18px 0 14px;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.08;
}

.hero p {
    margin: 0;
    font-size: 1.05rem;
    color: var(--color-text-muted);
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.95rem;
}

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

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

.btn-secondary {
    border: 1px solid var(--color-border);
    color: var(--color-text);
    background: #ffffff;
}

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

.hero-panel {
    overflow: hidden;
}

.hero-panel img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.section {
    padding: 18px 0 54px;
}

.section-title {
    margin: 0 0 10px;
    font-size: 1.75rem;
}

.section-subtitle {
    margin: 0 0 28px;
    max-width: 720px;
    color: var(--color-text-muted);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.card {
    overflow: hidden;
}

.card-image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #e7eefc;
}

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

.card-body {
    padding: 22px;
}

.card-meta,
.article-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    color: var(--color-text-muted);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card h2,
.card h3,
.related-card h3 {
    margin: 12px 0 10px;
    font-size: 1.2rem;
    line-height: 1.3;
}

.card p,
.related-card p,
.lead-list li,
.article-summary {
    color: var(--color-text-muted);
}

.card-link {
    display: inline-flex;
    margin-top: 12px;
    font-weight: 700;
}

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 24px;
    padding: 44px 0 60px;
}

.article-shell {
    padding: 34px;
}

.article-header {
    margin-bottom: 24px;
}

.article-summary {
    font-size: 1.06rem;
    margin: 14px 0 0;
}

.article-cover {
    margin: 24px 0 30px;
    border-radius: 16px;
    overflow: hidden;
}

.article-content h2 {
    font-size: 1.55rem;
    margin: 34px 0 12px;
}

.article-content p {
    margin: 0 0 16px;
}

.article-content ul {
    margin: 0 0 20px;
    padding-left: 20px;
}

.article-content li {
    margin-bottom: 10px;
}

.article-callout,
.article-warning,
.article-geo {
    border-radius: 16px;
    padding: 18px 20px;
    margin: 24px 0;
}

.article-callout {
    background: #edf4ff;
    border: 1px solid #cfe0ff;
}

.article-warning {
    background: #fff1f1;
    border: 1px solid #ffd5d5;
}

.article-warning strong {
    color: var(--color-danger);
}

.article-geo {
    background: #effcf4;
    border: 1px solid #cdeed8;
}

.sidebar-stack {
    display: grid;
    gap: 18px;
}

.sidebar-card {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(22, 32, 51, 0.08);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
}

.sidebar-card h3 {
    margin: 0 0 10px;
    font-size: 1rem;
}

.sidebar-card ul {
    margin: 0;
    padding-left: 18px;
}

.sidebar-card li {
    margin-bottom: 10px;
}

.sidebar-card p,
.sidebar-card li,
.sidebar-card a {
    color: var(--color-text-muted);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.related-card {
    padding: 20px;
}

.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 56px 24px 32px;
}

.footer-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.footer h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-secondary);
    margin-bottom: 14px;
}

.footer p {
    margin: 0;
    color: var(--color-text-secondary);
}

.footer ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer ul li {
    margin-bottom: 8px;
}

.footer ul a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.footer ul a:hover {
    color: var(--color-text);
}

.footer-copy {
    text-align: center;
    font-size: 0.82rem;
    color: var(--color-text-secondary);
}

@media (max-width: 980px) {
    .hero-grid,
    .article-layout,
    .blog-grid,
    .related-grid {
        grid-template-columns: 1fr;
    }

    .hero-panel img {
        aspect-ratio: 16 / 10;
    }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }

    .hero-copy,
    .article-shell,
    .sidebar-card,
    .related-card {
        padding: 22px;
    }

    .container {
        width: min(var(--max-width), calc(100% - 24px));
    }
}