:root {
  color-scheme: light;
  --accent: #2dbf8d;
  --accent-deep: #147a5b;
  --accent-soft: #e3f7ef;
  --canvas: #f6f8f7;
  --surface: #ffffff;
  --surface-muted: #f0f3f1;
  --text: #202522;
  --text-soft: #69716c;
  --line: #dfe5e1;
  --line-strong: #cbd4ce;
  --shadow: 0 16px 50px rgba(25, 42, 34, 0.07);
  --radius: 14px;
  --shell: 1120px;
  font-family:
    Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--canvas);
  color: var(--text);
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--canvas);
  color: var(--text);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.shell {
  width: min(var(--shell), calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  background: color-mix(in srgb, var(--canvas) 90%, transparent);
  backdrop-filter: blur(18px);
}

.site-header__inner {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 11px;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
}

.brand span {
  display: grid;
  gap: 1px;
}

.brand strong {
  font-size: 15px;
  letter-spacing: -0.02em;
}

.brand small,
.eyebrow {
  color: var(--accent-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.site-nav {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  white-space: nowrap;
}

.site-nav a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  border-radius: 9px;
  color: var(--text-soft);
  font-size: 13px;
  font-weight: 600;
}

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

.site-nav .site-nav__tool {
  min-width: 112px;
  justify-content: center;
  margin-left: 6px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text);
}

.site-main {
  min-height: calc(100vh - 160px);
}

.hero {
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-color: var(--canvas);
  background-size: 56px 56px;
}

.hero__inner {
  padding-block: clamp(72px, 11vw, 132px);
}

.eyebrow {
  margin: 0 0 18px;
  text-transform: uppercase;
}

.hero h1,
.page-heading h1,
.article-header h1 {
  margin: 0;
  font-size: clamp(42px, 7vw, 78px);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 1.04;
}

.hero__description {
  max-width: 600px;
  margin: 24px 0 0;
  color: var(--text-soft);
  font-size: clamp(16px, 2vw, 19px);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-width: 132px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--surface);
  font-size: 13px;
  font-weight: 700;
}

.button:hover {
  border-color: var(--text-soft);
}

.button--primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #102019;
}

.article-section,
.listing-page {
  padding-block: 64px 88px;
}

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

.section-heading .eyebrow {
  margin-bottom: 7px;
}

.section-heading h2 {
  margin: 0;
  font-size: 30px;
  letter-spacing: -0.035em;
}

.section-heading > a {
  min-width: 92px;
  color: var(--text-soft);
  font-size: 13px;
  text-align: right;
}

.section-heading > a:hover,
.article-card__read:hover {
  color: var(--accent-deep);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.article-card {
  display: flex;
  min-height: 230px;
  min-width: 0;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.article-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.article-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.article-card__meta > span {
  color: var(--accent-deep);
  font-weight: 700;
}

.article-card h3 {
  margin: 30px 0 0;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.04em;
  line-height: 1.2;
}

.article-card h3 a {
  overflow-wrap: anywhere;
}

.article-card > p {
  margin: 13px 0 0;
  color: var(--text-soft);
  font-size: 14px;
}

.article-card footer {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-top: auto;
  padding-top: 32px;
}

.tag-list {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-list a,
.tag-list > span {
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--text-soft);
  font-size: 11px;
}

.tag-list a:hover {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.article-card__read {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 700;
}

.pagination {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin-top: 34px;
}

.pagination a,
.pagination span {
  display: inline-flex;
  min-width: 38px;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding-inline: 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  color: var(--text-soft);
  font-size: 12px;
}

.pagination .current {
  border-color: var(--accent);
  background: var(--accent);
  color: #102019;
}

.page-heading {
  max-width: 760px;
  margin-bottom: 36px;
  padding-block: 38px 10px;
}

.page-heading h1 {
  font-size: clamp(40px, 6vw, 66px);
}

.page-heading > p:last-child {
  margin: 16px 0 0;
  color: var(--text-soft);
}

.archive-list {
  border-top: 1px solid var(--line-strong);
}

.archive-row {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr) minmax(100px, auto);
  align-items: center;
  gap: 22px;
  min-height: 82px;
  padding-block: 14px;
  border-bottom: 1px solid var(--line);
}

.archive-row time {
  color: var(--text-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.archive-row h2 {
  min-width: 0;
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.025em;
}

.archive-row h2 a {
  overflow-wrap: anywhere;
}

.archive-row h2 a:hover {
  color: var(--accent-deep);
}

.archive-row .tag-list {
  justify-content: flex-end;
}

.tag-directory {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.tag-directory a {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

.tag-directory a:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
}

.tag-directory small {
  color: var(--text-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.article-page {
  max-width: 860px;
  padding-block: 70px 100px;
}

.article-header {
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.article-back {
  display: inline-block;
  margin-bottom: 38px;
  color: var(--text-soft);
  font-size: 13px;
}

.article-back:hover {
  color: var(--accent-deep);
}

.article-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 15px;
  color: var(--text-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.article-header h1 {
  font-size: clamp(38px, 6vw, 64px);
  overflow-wrap: anywhere;
}

.article-header__tags {
  margin-top: 22px;
}

.article-content {
  padding-block: 42px;
  font-size: 16px;
  line-height: 1.85;
}

.article-content > :first-child {
  margin-top: 0;
}

.article-content > :last-child {
  margin-bottom: 0;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
  margin: 2em 0 0.7em;
  letter-spacing: -0.035em;
  line-height: 1.3;
}

.article-content h2 {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-size: 27px;
}

.article-content h3 {
  font-size: 21px;
}

.article-content p,
.article-content ul,
.article-content ol {
  margin: 1.1em 0;
}

.article-content a {
  color: var(--accent-deep);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
  text-underline-offset: 3px;
}

.article-content blockquote {
  margin: 1.6em 0;
  padding: 2px 0 2px 18px;
  border-left: 3px solid var(--accent);
  color: var(--text-soft);
}

.article-content code {
  padding: 2px 5px;
  border-radius: 5px;
  background: var(--surface-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
}

.article-content pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #19211d;
  color: #edf5f0;
  line-height: 1.65;
}

.article-content pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.article-content table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

.article-content th,
.article-content td {
  padding: 9px 12px;
  border: 1px solid var(--line);
  text-align: left;
}

.article-content img {
  height: auto;
  border-radius: 10px;
}

.post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.post-nav a {
  display: grid;
  min-height: 92px;
  align-content: center;
  gap: 5px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.post-nav a:last-child {
  text-align: right;
}

.post-nav a:hover {
  border-color: var(--line-strong);
}

.post-nav span {
  color: var(--text-soft);
  font-size: 11px;
}

.post-nav strong {
  overflow-wrap: anywhere;
  font-size: 14px;
}

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

.site-footer__inner {
  display: grid;
  min-height: 88px;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  color: var(--text-soft);
  font-size: 12px;
}

.site-footer nav {
  display: flex;
  justify-content: flex-end;
  gap: 16px;
}

.site-footer a:hover {
  color: var(--accent-deep);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --accent: #40d09d;
    --accent-deep: #70ddb5;
    --accent-soft: #173d30;
    --canvas: #111613;
    --surface: #171d19;
    --surface-muted: #202823;
    --text: #ecf1ee;
    --text-soft: #9aa69f;
    --line: #29342e;
    --line-strong: #3a4840;
    --shadow: 0 18px 54px rgba(0, 0, 0, 0.28);
  }

  .button--primary,
  .pagination .current {
    color: #0b1b14;
  }

  .article-content pre {
    border-color: #344139;
    background: #0a0f0c;
  }
}

@media (max-width: 760px) {
  .shell {
    width: min(100% - 28px, var(--shell));
  }

  .site-header__inner {
    min-height: 64px;
    gap: 14px;
  }

  .brand small {
    display: none;
  }

  .site-nav {
    justify-content: flex-start;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav a {
    padding-inline: 9px;
  }

  .site-nav a:nth-child(3),
  .site-nav a:nth-child(4) {
    display: none;
  }

  .site-nav .site-nav__tool {
    min-width: 96px;
    margin-left: 0;
  }

  .hero__inner {
    padding-block: 70px 84px;
  }

  .hero h1 {
    font-size: clamp(40px, 13vw, 62px);
  }

  .article-section,
  .listing-page {
    padding-block: 46px 68px;
  }

  .article-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .archive-row {
    grid-template-columns: 90px minmax(0, 1fr);
    gap: 12px;
  }

  .archive-row .tag-list {
    display: none;
  }

  .tag-directory {
    grid-template-columns: 1fr;
  }

  .article-page {
    padding-block: 46px 74px;
  }

  .post-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .post-nav > span {
    display: none;
  }

  .post-nav a:last-child {
    text-align: left;
  }

  .site-footer__inner {
    min-height: 112px;
    grid-template-columns: 1fr auto;
  }

  .site-footer__inner > span:nth-child(2) {
    display: none;
  }
}