:root {
  --bg: #faf9f5;
  --surface: #ffffff;
  --fg: #1c1b18;
  --muted: #6f6c63;
  --line: #e5e1d6;
  --accent: #d97757;
  --accent-soft: rgba(217, 119, 87, 0.13);
  --code-bg: #1c1b19;
  --code-fg: #e8e6df;
  --radius: 14px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --sans: ui-sans-serif, -apple-system, "Segoe UI Variable Display", "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141413;
    --surface: #1c1b19;
    --fg: #e8e6df;
    --muted: #9c9a90;
    --line: #2b2a26;
    --accent: #e08a6d;
    --accent-soft: rgba(224, 138, 109, 0.15);
    --code-bg: #1f1e1b;
    --code-fg: #e8e6df;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: radial-gradient(
    1100px 480px at 50% -12%,
    var(--accent-soft),
    transparent 68%
  );
  background-repeat: no-repeat;
}

main.wrap {
  flex: 1 0 auto;
}

.wrap {
  width: 100%;
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1.4rem;
}

/* ---------- 顶栏 ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(250, 249, 245, 0.78);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
  border-bottom: 1px solid var(--line);
}

@media (prefers-color-scheme: dark) {
  .site-head {
    background: rgba(20, 20, 19, 0.78);
  }
}

.head-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 3.6rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  color: var(--fg);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

nav {
  display: flex;
  flex: none;
  gap: 1.4rem;
}

nav a {
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

nav a:hover {
  color: var(--fg);
}

/* ---------- 首页 / 列表页头部 ---------- */
.hero {
  padding: 3.9rem 0 3rem;
}

.hero.small {
  padding: 3.6rem 0 2.2rem;
}

.eyebrow {
  margin: 0 0 1.1rem;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.eyebrow a:hover {
  border-bottom-color: currentColor;
}

.hero h1 {
  margin: 0 0 1.2rem;
  max-width: 22ch;
  font-size: clamp(1.75rem, 7.2vw, 3.15rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.035em;
  overflow-wrap: break-word;
}

.hero.small h1 {
  margin-bottom: 0;
  font-size: clamp(1.8rem, 4.5vw, 2.4rem);
}

.lede {
  max-width: 52ch;
  margin: 0;
  color: var(--muted);
  font-size: 1.03rem;
}

.back {
  display: inline-block;
  margin-top: 1.8rem;
  padding-bottom: 2px;
  border-bottom: 1px solid currentColor;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  text-decoration: none;
}

/* ---------- 文章流 ---------- */
.feed {
  margin-bottom: 5rem;
  border-top: 1px solid var(--line);
}

.row {
  display: grid;
  grid-template-columns: 6.2rem 1fr 1.4rem;
  gap: 1.4rem;
  align-items: start;
  padding: 1.5rem 0.65rem;
  border-bottom: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  transition: background 0.35s var(--ease);
}

.row time {
  padding-top: 0.3rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.row h2 {
  margin: 0 0 0.35rem;
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  overflow-wrap: break-word;
  transition: color 0.25s var(--ease);
}

.row > div {
  min-width: 0;
}

.row p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.row .arrow {
  padding-top: 0.15rem;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.empty {
  padding: 2.4rem 0.65rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

.row:hover {
  background: var(--surface);
}

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

.row:hover .arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ---------- 文章页 ---------- */
.post {
  max-width: 42rem;
  padding: 4rem 0 2rem;
}

.post-head {
  margin-bottom: 2.6rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.post-head h1 {
  margin: 0.5rem 0 0;
  font-size: clamp(1.85rem, 4.5vw, 2.55rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.post-foot {
  display: flex;
  gap: 1.6rem;
  margin-top: 3rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
}

.post-foot a {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

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

/* ---------- 正文排版 ---------- */
.prose {
  max-width: 65ch;
  font-size: 1.02rem;
  line-height: 1.85;
}

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

.prose h2 {
  margin: 2.8rem 0 1rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.prose h3 {
  margin: 2rem 0 0.6rem;
  font-size: 1.12rem;
  letter-spacing: -0.01em;
}

.prose p {
  margin: 0 0 1.35rem;
}

.prose a {
  color: var(--fg);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease);
}

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

.prose strong {
  font-weight: 650;
}

.prose ul,
.prose ol {
  margin: 0 0 1.35rem;
  padding-left: 1.3rem;
}

.prose li {
  margin: 0.35rem 0;
}

.prose li::marker {
  color: var(--accent);
}

.prose code {
  padding: 0.15em 0.4em;
  border-radius: 5px;
  background: var(--accent-soft);
  font-family: var(--mono);
  font-size: 0.87em;
}

.prose pre {
  margin: 0 0 1.5rem;
  padding: 1.15rem 1.3rem;
  overflow-x: auto;
  scrollbar-width: thin;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code-bg);
  color: var(--code-fg);
  font-size: 0.86rem;
  line-height: 1.65;
}

.prose pre code {
  padding: 0;
  background: none;
  color: inherit;
  font-size: inherit;
}

.prose blockquote {
  margin: 0 0 1.5rem;
  padding: 0.15rem 0 0.15rem 1.2rem;
  border-left: 2px solid var(--accent);
  color: var(--muted);
  font-size: 1.04rem;
}

.prose blockquote strong {
  color: var(--fg);
}

.prose blockquote p:last-child {
  margin: 0;
}

.prose table {
  width: 100%;
  margin: 0 0 1.5rem;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.prose th {
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--fg);
  text-align: left;
  font-weight: 600;
}

.prose td {
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--line);
}

.prose img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.prose hr {
  margin: 2.5rem 0;
  border: 0;
  border-top: 1px solid var(--line);
}

/* ---------- 页脚 ---------- */
.site-foot {
  flex: none;
  margin-top: 2rem;
  border-top: 1px solid var(--line);
}

.site-foot .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 2rem;
  padding-bottom: 2rem;
  color: var(--muted);
  font-size: 0.82rem;
}

/* ---------- 通用 ---------- */
::selection {
  background: var(--accent-soft);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  top: 1rem;
  left: 1rem;
  z-index: 20;
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
}

@media (max-width: 600px) {
  .hero {
    padding: 3rem 0 2.2rem;
  }

  .row {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .row time {
    padding-top: 0;
  }

  .row .arrow {
    display: none;
  }

  .post {
    padding-top: 2.8rem;
  }

  .prose table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}