:root {
  --color-bg: #f6f7f9;
  --color-surface: #ffffff;
  --color-text: #1f2523;
  --color-muted: #64706c;
  --color-border: #d8dedb;
  --color-accent: #1f6f5b;
  --color-accent-strong: #144d3f;
  --color-warm: #a94f2a;
  --shadow-card: 0 16px 36px rgba(20, 34, 30, 0.08);
  --content-width: 1080px;
  --post-width: 760px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-accent-strong);
}

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

.site-header,
.site-footer,
.section,
.intro {
  padding-inline: 24px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--content-width);
  margin: 0 auto;
  padding-block: 22px;
}

.site-title {
  color: var(--color-text);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 15px;
  font-weight: 650;
}

.site-nav a {
  color: var(--color-muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--color-text);
}

.intro {
  border-block: 1px solid var(--color-border);
  background: var(--color-surface);
}

.intro__content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding-block: 58px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--color-warm);
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
}

.intro h1 {
  max-width: 820px;
  margin: 0;
  font-size: 48px;
  line-height: 1.08;
}

.intro p:last-child {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--color-muted);
  font-size: 19px;
}

.section {
  max-width: calc(var(--content-width) + 48px);
  margin: 0 auto;
  padding-block: 42px 64px;
}

.section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.section__header h2 {
  margin: 0;
  font-size: 26px;
  line-height: 1.2;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.post-card {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.post-card__media {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #dde5e0;
}

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

.post-card__body {
  padding: 22px;
}

.post-card time,
.post__header time {
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 650;
}

.post-card h3 {
  margin: 8px 0 10px;
  font-size: 24px;
  line-height: 1.2;
}

.post-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}

.post-card h3 a:hover {
  color: var(--color-accent);
}

.post-card p {
  margin: 0 0 18px;
  color: var(--color-muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 3px 10px;
  background: #f9faf9;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 700;
}

.post {
  max-width: var(--post-width);
  margin: 0 auto;
  padding: 42px 24px 72px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 20px;
  font-size: 15px;
  font-weight: 700;
}

.post__header h1 {
  margin: 8px 0 12px;
  font-size: 44px;
  line-height: 1.1;
}

.post__header p {
  margin: 0 0 18px;
  color: var(--color-muted);
  font-size: 19px;
}

.post__cover {
  width: 100%;
  margin: 30px 0;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.post__content h2 {
  margin-top: 40px;
  font-size: 28px;
  line-height: 1.22;
}

.post__content h3 {
  margin-top: 30px;
  font-size: 22px;
  line-height: 1.28;
}

.post__content p,
.post__content ul,
.post__content ol,
.post__content pre,
.post__content blockquote {
  margin-block: 18px;
}

.post__content code {
  border-radius: 5px;
  padding: 0.12em 0.34em;
  background: #e9eeee;
  font-size: 0.92em;
}

.post__content pre {
  overflow-x: auto;
  border-radius: 8px;
  padding: 18px;
  background: #1f2523;
  color: #f8fbfa;
}

.post__content pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.post__content blockquote {
  margin-inline: 0;
  border-left: 4px solid var(--color-accent);
  padding: 8px 0 8px 18px;
  color: var(--color-muted);
}

.post__content table {
  width: 100%;
  border-collapse: collapse;
  margin-block: 24px;
  font-size: 15px;
}

.post__content th,
.post__content td {
  border: 1px solid var(--color-border);
  padding: 10px;
  text-align: left;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
}

.site-footer p {
  max-width: var(--content-width);
  margin: 0 auto;
  padding-block: 26px;
  font-size: 14px;
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .intro__content {
    padding-block: 42px;
  }

  .intro h1 {
    font-size: 36px;
  }

  .post__header h1 {
    font-size: 34px;
  }
}