:root {
  --color-primary: #000000;
  --color-on-primary: #ffffff;
  --color-ink: #000000;
  --color-ink-deep: #090909;
  --color-charcoal: #525252;
  --color-body: #737373;
  --color-mute: #a3a3a3;
  --color-canvas: #ffffff;
  --color-surface-soft: #fafafa;
  --color-surface-card: #ffffff;
  --color-hairline: #e5e5e5;
  --color-hairline-strong: #d4d4d4;
  --color-on-dark: #ffffff;
  --color-on-dark-mute: rgba(255,255,255,0.7);
  --color-surface-dark: #171717;
  --color-focus-ring: rgba(59,130,246,0.5);
  --color-terminal-red: #ff5f56;
  --color-terminal-yellow: #ffbd2e;
  --color-terminal-green: #27c93f;

  --rounded-none: 0px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-full: 9999px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-section: 88px;

  --font-display: "SF Pro Rounded", Nunito, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: ui-sans-serif, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-canvas);
  font-size: 16px;
  line-height: 1.5;
}
a { color: var(--color-ink); text-decoration: underline; }
a:hover { color: var(--color-charcoal); }

.wrap { max-width: 720px; margin: 0 auto; padding: 0 24px; }
.wrap-wide { max-width: 960px; margin: 0 auto; padding: 0 24px; }

.header {
  background: var(--color-canvas);
  height: 56px;
}
.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  height: 56px;
}
.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  color: var(--color-ink);
  text-decoration: none;
}
.logo:hover { text-decoration: none; }
.logo .llama { margin-right: 6px; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 16px; flex: 1; }
.nav a { color: var(--color-ink); text-decoration: none; font-size: 14px; font-weight: 500; }
.nav a.on { text-decoration: underline; }
.back { margin-left: auto; font-size: 12px; color: var(--color-body); text-decoration: none; }

.hero {
  padding: 64px 0 24px;
  text-align: center;
}
.hero .llama {
  font-size: 48px;
  line-height: 1;
  margin-bottom: 16px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 500;
  line-height: 1.11;
  margin: 0 auto 16px;
  max-width: 18ch;
}
.hero p {
  margin: 0 auto 24px;
  color: var(--color-body);
  max-width: 36em;
  font-size: 16px;
}
.hero.page { text-align: left; padding: 48px 0 0; }
.hero.page h1 { margin-left: 0; }

.snippet {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--color-surface-soft);
  border-radius: var(--rounded-full);
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 16px;
  min-height: 48px;
  color: var(--color-ink);
}

.section { padding: 88px 0 0; }
.section:last-of-type { padding-bottom: 88px; }
.section h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.33;
  margin: 0 0 16px;
}
.muted { color: var(--color-body); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

.card {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: 32px;
}
.card h3 { margin: 0 0 8px; font-size: 20px; font-weight: 500; }
.card p { margin: 0; color: var(--color-charcoal); font-size: 14px; }
.card.dark {
  background: var(--color-surface-dark);
  color: #fff;
  border: 0;
}
.card.dark p { color: var(--color-on-dark-mute); }
.card.dark h3 { color: #fff; }

.terminal {
  background: #fff;
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 14px;
  text-align: left;
}
.lights { display: flex; gap: 6px; margin-bottom: 12px; }
.lights i {
  width: 12px;
  height: 12px;
  border-radius: 9999px;
  display: block;
}
.lights .r { background: var(--color-terminal-red); }
.lights .y { background: var(--color-terminal-yellow); }
.lights .g { background: var(--color-terminal-green); }
.terminal .cmt { color: var(--color-mute); }

.list { list-style: none; margin: 0; padding: 0; }
.list li { border-bottom: 1px solid var(--color-hairline); padding: 16px 0; }
.list .date { color: var(--color-body); font-size: 14px; margin-right: 12px; }

.ph {
  background: var(--color-surface-soft);
  color: var(--color-mute);
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-lg);
}

.btn, button, .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 20px;
  height: 36px;
  border: 0;
  border-radius: var(--rounded-full);
  cursor: pointer;
  text-decoration: none;
}
.btn:hover, .btn-primary:hover { text-decoration: none; color: #fff; }
.btn-secondary {
  background: #fff;
  color: var(--color-ink);
  border: 1px solid var(--color-hairline-strong);
}
.btn-secondary:hover { color: var(--color-ink); }
.btn-on-dark {
  background: #fff;
  color: #000;
}
.btn-on-dark:hover { color: #000; }

form label { display: block; margin: 0 0 4px; font-size: 14px; font-weight: 500; }
form input, form textarea {
  width: 100%;
  max-width: 480px;
  padding: 8px 16px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-full);
  font: inherit;
  margin-bottom: 12px;
  height: 40px;
}
form textarea { border-radius: 12px; height: auto; min-height: 88px; }
form input:focus, form textarea:focus {
  outline: none;
  border-color: var(--color-ink);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

.footer {
  border-top: 1px solid var(--color-hairline);
  padding: 32px 24px 48px;
  color: var(--color-body);
  font-size: 12px;
  text-align: center;
}
.footer a { color: var(--color-body); margin: 0 8px; text-decoration: none; }

@media (max-width: 720px) {
  .grid, .grid-2 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
  .nav { display: none; }
  .section { padding-top: 48px; }
}

.ph { overflow: hidden; }
.ph img { width: 100%; height: 100%; object-fit: cover; display: block; }