* {
    box-sizing: border-box;
}

body.custom-site-body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Microsoft YaHei", sans-serif;
    color: #111827;
    background: #f6f8fb;
}

a {
    text-decoration: none;
}

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

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: rgba(15, 23, 42, 0.94);
    backdrop-filter: blur(12px);
}

.site-header__inner {
    max-width: 1200px;
    height: 76px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-logo {
    color: #fff;
    font-size: 22px;
    font-weight: 800;
}

.site-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.site-menu {
    list-style: none;
    display: flex;
    gap: 32px;
    margin: 0;
    padding: 0;
}

.site-menu a {
    color: rgba(255, 255, 255, 0.86);
    font-size: 15px;
    font-weight: 600;
}

.site-menu a:hover {
    color: #fff;
}

.site-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 700;
}

.site-btn--primary {
    background: #2563eb;
    color: #fff;
}

.site-btn--light {
    background: #fff;
    color: #2563eb;
}

/* Footer */
.site-footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 70px 0 26px;
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
}

.site-footer h3,
.site-footer h4 {
    color: #fff;
    margin-top: 0;
}

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

.site-footer li {
    margin-bottom: 10px;
}

.site-footer a {
    color: #cbd5e1;
}

.site-footer a:hover {
    color: #fff;
}

.site-footer__bottom {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 14px;
    color: #94a3b8;
}

/* Card */
.post-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.post-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.08);
}

.post-card__thumb {
    display: block;
    height: 220px;
    background: #e5e7eb;
}

.post-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-card__empty {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
}

.post-card__body {
    padding: 24px;
}

.post-card__body h3 {
    margin: 0 0 12px;
}

.post-card__body a {
    color: #111827;
}

.post-card__body p {
    color: #6b7280;
    line-height: 1.7;
}

/* Mobile */
@media (max-width: 900px) {
    .site-header__inner {
        height: auto;
        padding: 18px 24px;
        flex-direction: column;
        gap: 16px;
    }

    .site-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .post-grid,
    .site-footer__grid {
        grid-template-columns: 1fr;
    }
}