:root {
  --bg: #f7f8fc;
  --card: #ffffff;
  --text: #1b2130;
  --muted: #5c667a;
  --line: #e6e9f0;
  --accent: #2563eb;
  --shadow: 0 20px 50px rgba(21, 28, 47, 0.07);
  --radius: 24px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: linear-gradient(180deg, #f8faff 0%, #f6f7fb 100%);
  color: var(--text);
  font: 16px/1.65 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}
.stack { padding: 28px 0 72px; }
.page-top { padding-top: 32px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: rgba(247, 248, 252, 0.8);
  border-bottom: 1px solid rgba(230, 233, 240, 0.7);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.nav a {
  color: var(--muted);
  font-weight: 600;
}
.nav a.active, .nav a:hover { color: var(--text); }

.hero {
  padding: 42px 0 10px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
}
.hero h1 {
  font-size: clamp(2.2rem, 4vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin: 8px 0 16px;
}
.eyebrow {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 12px;
}
.lead {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 62ch;
}
.hero-card,
.sidebar-card,
.author-box,
.featured-card,
.card,
.simple-page {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-card {
  padding: 24px;
}
.hero-card ul {
  margin: 12px 0 0;
  padding-left: 18px;
}
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
}
.section-head h2, .section-head h1 { margin: 0; }
.more-link { color: var(--accent); font-weight: 700; }
.muted { color: var(--muted); }

.featured-card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  overflow: hidden;
}
.featured-media img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
}
.featured-body {
  padding: 28px;
}
.featured-body h2 {
  margin: 8px 0 12px;
  font-size: clamp(1.7rem, 2.2vw, 2.6rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.card {
  overflow: hidden;
}
.card-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.card-body {
  padding: 18px 18px 20px;
}
.card-body h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  line-height: 1.24;
  letter-spacing: -0.02em;
}
.card-body p { margin: 0 0 14px; color: var(--muted); }

.meta-line {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.95rem;
}
.meta-top { margin-bottom: 12px; }

.article-page {
  padding: 36px 0 72px;
}
.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 28px;
}
.article-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin: 0 0 12px;
}
.article-excerpt {
  font-size: 1.12rem;
  color: var(--muted);
  margin: 0 0 18px;
}
.article-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 24px;
  object-fit: cover;
  border: 1px solid var(--line);
  background: #eef3ff;
}
.article-content {
  margin-top: 22px;
  font-size: 1.06rem;
}
.article-content p { margin: 0 0 1rem; }
.sidebar {
  position: sticky;
  top: 94px;
  align-self: start;
  display: grid;
  gap: 16px;
}
.sidebar-card {
  padding: 20px;
}
.related-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0 0 0 16px;
}
.source-link {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 18px;
}

.simple-page {
  padding: 28px;
}

.author-box { padding: 28px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  background: var(--accent);
  color: white;
  border-radius: 999px;
  font-weight: 700;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(255,255,255,0.55);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 24px;
  padding: 40px 0 20px;
}
.footer-title {
  font-weight: 800;
  margin-bottom: 10px;
}
.footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding: 18px 0 30px;
  color: var(--muted);
}

@media (max-width: 1024px) {
  .hero-grid,
  .featured-card,
  .article-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .sidebar { position: static; }
}

@media (max-width: 720px) {
  .header-inner,
  .section-head,
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .cards { grid-template-columns: 1fr; }
  .featured-body, .simple-page, .author-box { padding: 20px; }
}

.native-ad {
  margin: 28px 0;
}
.native-ad__label {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  background: #eef4ff;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.native-ad-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.native-ad__card {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.native-ad__card--bottom {
  grid-template-columns: 1fr;
}
.native-ad__image {
  width: 100%;
  height: 100%;
  min-height: 160px;
  object-fit: cover;
  background: #eef3ff;
}
.native-ad__image--bottom {
  aspect-ratio: 16 / 9;
  min-height: 0;
}
.native-ad__body {
  padding: 18px 18px 18px 0;
}
.native-ad__card--bottom .native-ad__body {
  padding: 0 18px 18px;
}
.native-ad__title {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.native-ad__description {
  margin: 0 0 14px;
  color: var(--muted);
}
.native-ad__cta {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
}

.admin-page .section-head {
  margin-bottom: 24px;
}
.admin-panel,
.admin-ad-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.admin-panel {
  padding: 24px;
}
.admin-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.admin-grid--settings {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.admin-grid label,
.admin-grid .admin-switch {
  display: grid;
  gap: 8px;
}
.admin-grid input,
.admin-grid textarea,
.admin-grid select {
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--text);
  font: inherit;
}
.admin-grid textarea {
  min-height: 120px;
  resize: vertical;
}
.admin-switch {
  align-items: center;
  grid-template-columns: auto 1fr;
}
.admin-switch input {
  width: 18px;
  height: 18px;
  min-height: 18px;
  padding: 0;
}
.admin-actions {
  display: flex;
  gap: 12px;
  margin: 24px 0 18px;
  flex-wrap: wrap;
}
.button-secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
}
.button-danger {
  background: #fff1f2;
  color: #be123c;
  border: 1px solid #fecdd3;
}
.admin-message {
  margin-bottom: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  font-weight: 600;
}
.admin-message--ok {
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}
.admin-message--error {
  background: #fff1f2;
  color: #be123c;
  border: 1px solid #fecdd3;
}
.admin-ads {
  display: grid;
  gap: 18px;
}
.admin-ad-card {
  padding: 20px;
}
.admin-ad-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

@media (max-width: 1024px) {
  .native-ad-grid,
  .admin-grid--settings,
  .admin-grid {
    grid-template-columns: 1fr 1fr;
  }
  .native-ad__card {
    grid-template-columns: 1fr;
  }
  .native-ad__body {
    padding: 0 18px 18px;
  }
}

@media (max-width: 720px) {
  .native-ad-grid,
  .admin-grid--settings,
  .admin-grid {
    grid-template-columns: 1fr;
  }
}