:root {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --card: #161b22;
  --card-hover: #1c2330;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent-2: #7ee787;
  --accent-3: #d2a8ff;
  --radius: 14px;
  --maxw: 1000px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC",
    "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --bg-soft: #ffffff;
    --card: #ffffff;
    --card-hover: #f3f5f8;
    --border: #d0d7de;
    --text: #1f2328;
    --muted: #59636e;
    --accent: #0969da;
    --accent-2: #1a7f37;
    --accent-3: #8250df;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
}

.brand:hover {
  text-decoration: none;
}

.brand .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.nav a {
  color: var(--muted);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lang-select {
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 8px;
  cursor: pointer;
}

.lang-select:hover {
  border-color: var(--accent);
  background: var(--card-hover);
}

/* Hero */
.hero {
  padding: 72px 0 40px;
  text-align: center;
}

.hero .eyebrow {
  display: inline-block;
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.hero h1 .grad {
  background: linear-gradient(120deg, var(--accent), var(--accent-3), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  max-width: 640px;
  margin: 0 auto 22px;
  color: var(--muted);
  font-size: 17px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
}

.btn:hover {
  text-decoration: none;
  background: var(--card-hover);
  border-color: var(--accent);
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn.primary:hover {
  background: color-mix(in srgb, var(--accent) 88%, #000);
}

/* Section */
.section {
  padding: 28px 0 56px;
}

.section-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 20px;
}

.section-title h2 {
  font-size: 22px;
  margin: 0;
}

.section-title span {
  color: var(--muted);
  font-size: 14px;
}

/* Project grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--card-hover);
}

.card .top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.card h3 {
  margin: 0;
  font-size: 18px;
}

.card h3 a {
  color: var(--text);
}

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

.card .desc {
  color: var(--muted);
  font-size: 14px;
  flex: 1;
  margin: 0 0 16px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 9px;
}

.card .links {
  display: flex;
  gap: 14px;
  font-size: 14px;
  font-weight: 600;
}

/* Status pill */
.status {
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}

.status.dev {
  color: var(--accent-3);
  background: color-mix(in srgb, var(--accent-3) 16%, transparent);
}

.status.active {
  color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 16%, transparent);
}

.status.wip {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
}

/* Project detail */
.detail {
  padding: 48px 0 64px;
}

.back {
  display: inline-block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 22px;
}

.detail h1 {
  font-size: clamp(26px, 4vw, 38px);
  margin: 0 0 10px;
  letter-spacing: -0.02em;
}

.detail .lead {
  color: var(--muted);
  font-size: 17px;
  max-width: 720px;
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 22px 0 8px;
}

.detail-meta .links {
  display: flex;
  gap: 12px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
  margin-top: 22px;
}

.panel h2 {
  font-size: 18px;
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.panel h3 {
  font-size: 15px;
  margin: 20px 0 8px;
}

.panel ul {
  margin: 0;
  padding-left: 20px;
}

.panel li {
  margin: 6px 0;
}

.kv {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.kv th,
.kv td {
  text-align: left;
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.kv th {
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

.kv td code {
  font-family: var(--mono);
  font-size: 13px;
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: color-mix(in srgb, var(--muted) 16%, transparent);
  border-radius: 6px;
  padding: 1px 6px;
}

pre {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  overflow-x: auto;
  font-size: 13px;
}

pre code {
  background: none;
  padding: 0;
}

.note {
  border-left: 3px solid var(--accent-3);
  background: color-mix(in srgb, var(--accent-3) 10%, transparent);
  border-radius: 0 10px 10px 0;
  padding: 12px 16px;
  color: var(--muted);
  font-size: 14px;
  margin: 16px 0 0;
}

/* Rendered README */
.readme {
  margin-top: 18px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
  overflow-wrap: anywhere;
}

.readme h1,
.readme h2,
.readme h3,
.readme h4,
.readme h5,
.readme h6 {
  line-height: 1.3;
  margin: 22px 0 10px;
}

.readme h1 { font-size: 24px; }
.readme h2 {
  font-size: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}
.readme h3 { font-size: 16px; }
.readme h4 { font-size: 14px; }

.readme p { margin: 10px 0; }

.readme ul,
.readme ol { padding-left: 22px; }

.readme li { margin: 5px 0; }

.readme li.task {
  list-style: none;
  margin-left: -18px;
}

.readme blockquote {
  border-left: 3px solid var(--border);
  margin: 12px 0;
  padding: 2px 14px;
  color: var(--muted);
}

.readme hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 20px 0;
}

.readme table {
  border-collapse: collapse;
  width: 100%;
  margin: 14px 0;
  font-size: 14px;
  display: block;
  overflow-x: auto;
}

.readme th,
.readme td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
}

.readme th { background: var(--bg-soft); }

.readme img { max-width: 100%; height: auto; }

.readme pre {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  overflow-x: auto;
}

.readme pre code {
  background: none;
  padding: 0;
}

.readme-status {
  color: var(--muted);
  font-style: italic;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
}

@media (max-width: 640px) {
  .nav {
    display: none;
  }
  .hero {
    padding: 48px 0 28px;
  }
}