:root {
    --sde-bg: #f8f9fa;
    --sde-text: #2d3436;
    --sde-accent: #00b894;
    --sde-accent-dark: #00896e;
    --sde-header-bg: #1e272e;
    --sde-card-bg: #ffffff;
    --sde-muted: #636e72;
    --sde-border: #dfe6e9;
}
.sde-body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--sde-bg);
    color: var(--sde-text);
    line-height: 1.7;
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: 100vh;
}
.sde-header {
    background: var(--sde-header-bg);
    padding: 1rem 2rem;
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,.15);
    position: sticky;
    top: 0;
    z-index: 50;
}
.sde-nav { display: flex; justify-content: flex-end; }
.sde-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.sde-nav-item { margin: 0; }
.sde-nav-link {
    color: rgba(255,255,255,.85);
    text-decoration: none;
    font-size: .9rem;
    letter-spacing: .03em;
    padding: .4rem 0;
    border-bottom: 2px solid transparent;
    transition: color .2s, border-color .2s;
}
.sde-nav-link:hover {
    color: var(--sde-accent);
    border-bottom-color: var(--sde-accent);
}
.sde-main-article {
    max-width: 960px;
    margin: 0 auto;
    padding: 3rem 2rem;
    display: grid;
    gap: 3rem;
}
.sde-hero-section {
    text-align: center;
    padding: 3rem 1rem;
    background: linear-gradient(135deg, var(--sde-header-bg), #2d3436);
    color: #fff;
    border-radius: 12px;
    margin: -1rem -1rem 0;
}
.sde-hero-title {
    font-size: 2.4rem;
    font-weight: 700;
    margin: 0 0 .75rem;
    letter-spacing: -.02em;
}
.sde-hero-subtitle {
    font-size: 1.15rem;
    color: var(--sde-accent);
    font-weight: 600;
    margin: 0 0 .5rem;
}
.sde-hero-text {
    color: rgba(255,255,255,.75);
    max-width: 600px;
    margin: .5rem auto 0;
    font-size: .95rem;
}
.sde-cities-list, .sde-blog-list, .sde-section {
    display: grid;
    gap: 1rem;
}
.sde-heading {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sde-text);
    border-left: 4px solid var(--sde-accent);
    padding-left: 1rem;
    margin: 0;
}
.sde-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}
.sde-list-item {
    background: var(--sde-card-bg);
    border-radius: 8px;
    border: 1px solid var(--sde-border);
    transition: transform .2s, box-shadow .2s;
}
.sde-list-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,.08);
}
.sde-link {
    display: block;
    padding: 1.25rem;
    color: var(--sde-text);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
}
.sde-link:hover { color: var(--sde-accent-dark); }
.sde-link::after { content: ' →'; color: var(--sde-accent); }
.sde-footer {
    background: var(--sde-header-bg);
    color: rgba(255,255,255,.6);
    padding: 2rem;
    text-align: center;
    font-size: .85rem;
    margin-top: 2rem;
}
article p { margin: 0 0 1rem; color: #444; }
article h2 { font-size: 1.4rem; margin: 2rem 0 1rem; color: var(--sde-text); }
article h3 { font-size: 1.15rem; margin: 1.5rem 0 .75rem; }
@media (max-width: 640px) {
    .sde-header { grid-template-columns: 1fr; text-align: center; padding: 1rem; }
    .sde-nav { justify-content: center; }
    .sde-nav-list { gap: .75rem; justify-content: center; }
    .sde-hero-title { font-size: 1.8rem; }
    .sde-main-article { padding: 2rem 1rem; }
    .sde-list { grid-template-columns: 1fr; }
}