:root {
  --color-primary: #150f23;
  --color-ink-deep: #1f1633;
  --color-on-primary: #ffffff;
  --color-accent-lime: #c2ef4e;
  --color-accent-pink: #fa7faa;
  --color-accent-violet: #6a5fc1;
  --color-accent-violet-deep: #422082;
  --color-accent-violet-mid: #79628c;
  --color-surface-canvas-dark: #1f1633;
  --color-surface-canvas-light: #ffffff;
  --color-surface-night: #150f23;
  --color-surface-press-light: #f0f0f0;
  --color-hairline-violet: #362d59;
  --color-hairline-cool: #cfcfdb;
  --color-hairline-cloud: #e5e7eb;
  --color-ink: #1f1633;
  --color-on-dark-muted: #bdb8c0;
  --color-on-dark-faint: #3f3849;
  --color-ring-focus: #9dc1f5;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 10px;
  --rounded-xl: 12px;
  --rounded-xxl: 18px;
  --rounded-full: 9999px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-section: 96px;
  --font-display: "Sentri Display", Rubik, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: Rubik, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-code: Monaco, Menlo, "Ubuntu Mono", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", monospace;
}

* { box-sizing: border-box; }
html { background: var(--color-surface-canvas-dark); }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-on-primary);
  background:
    radial-gradient(1px 1px at 12% 18%, rgba(255,255,255,0.35), transparent),
    radial-gradient(1px 1px at 28% 62%, rgba(255,255,255,0.2), transparent),
    radial-gradient(1px 1px at 61% 24%, rgba(255,255,255,0.28), transparent),
    radial-gradient(1px 1px at 81% 71%, rgba(255,255,255,0.18), transparent),
    radial-gradient(1px 1px at 44% 88%, rgba(255,255,255,0.22), transparent),
    var(--color-surface-canvas-dark);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
}
a { color: var(--color-on-primary); text-decoration: underline; }
a:hover { color: var(--color-accent-lime); }
.wrap { max-width: 1152px; margin: 0 auto; padding: 0 24px; }

.header {
  padding: 16px 0;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.logo {
  color: var(--color-on-primary);
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.02em;
}
.logo:hover { color: var(--color-accent-lime); }
.nav { display: flex; flex-wrap: wrap; gap: 4px 20px; flex: 1; }
.nav a { color: var(--color-on-dark-muted); text-decoration: none; font-size: 16px; }
.nav a.on { color: var(--color-on-primary); }
.back { margin-left: auto; font-size: 12px; color: var(--color-on-dark-muted); text-decoration: none; text-transform: uppercase; letter-spacing: 0.2px; }

.eyebrow {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.2px;
  text-transform: uppercase;
  color: var(--color-accent-lime);
  display: block;
  margin-bottom: 16px;
}

.hero { padding: 96px 0 80px; position: relative; overflow: hidden; }
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 88px);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 24px;
  max-width: 14ch;
}
.lime {
  display: inline-block;
  background: var(--color-accent-lime);
  color: var(--color-ink-deep);
  border-radius: var(--rounded-xs);
  padding: 0 12px;
  line-height: 1.1;
}
.hero p {
  margin: 0 0 28px;
  color: var(--color-on-dark-muted);
  max-width: 38em;
  font-size: 16px;
  font-weight: 400;
  line-height: 2;
}
.mascot {
  position: absolute;
  width: 72px;
  height: 72px;
  border-radius: 40% 60% 50% 50%;
  background: var(--color-accent-pink);
  border: 3px solid var(--color-on-primary);
  right: 12%;
  top: 28%;
  transform: rotate(-12deg);
}
.mascot:after {
  content: "";
  position: absolute;
  width: 48px;
  height: 48px;
  background: var(--color-accent-lime);
  border: 3px solid var(--color-on-primary);
  border-radius: 50%;
  left: -40px;
  bottom: -28px;
}

.btn, form button {
  display: inline-flex;
  align-items: center;
  padding: 12px 16px;
  border: none;
  background: var(--color-on-primary);
  color: var(--color-ink-deep);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.2px;
  text-transform: uppercase;
  border-radius: var(--rounded-md);
  cursor: pointer;
  text-decoration: none;
  box-shadow: rgb(21, 15, 35) 0 0 8px 6px;
}
.btn:hover, form button:hover { background: var(--color-surface-press-light); color: #1a1a1a; }
.btn-ghost {
  background: var(--color-on-dark-faint);
  color: var(--color-on-primary);
  box-shadow: none;
  border-radius: var(--rounded-xl);
  padding: 8px 16px;
}
.btn-ghost:hover { color: var(--color-on-primary); }
.btn-primary-light {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: none;
}

.section { padding: var(--space-section) 0; }
.section h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 500;
  line-height: 1.1;
  margin: 0 0 32px;
}
.light {
  background: var(--color-surface-canvas-light);
  color: var(--color-ink-deep);
}
.light h2, .light h3 { color: var(--color-ink-deep); }
.light p, .light .muted { color: #4a4458; }
.light a { color: var(--color-ink-deep); }
.muted { color: var(--color-on-dark-muted); font-weight: 400; line-height: 2; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.card {
  background: var(--color-ink-deep);
  border: 1px solid var(--color-hairline-violet);
  border-radius: var(--rounded-xxl);
  padding: 32px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 500;
}
.card p { margin: 0; color: var(--color-on-dark-muted); font-weight: 400; line-height: 2; }
.card-violet {
  background: var(--color-accent-violet-deep);
  border: none;
}
.light .card {
  background: var(--color-surface-canvas-light);
  border: 1px solid var(--color-hairline-cloud);
  border-radius: var(--rounded-xl);
  box-shadow: rgba(0,0,0,0.1) 0 10px 15px -3px;
}
.light .card p { color: #4a4458; }
.card-featured {
  background: var(--color-surface-night);
  color: var(--color-on-primary);
  border: none;
}
.card-featured p { color: var(--color-on-dark-muted); }

.list { list-style: none; margin: 0; padding: 0; }
.list li { border-bottom: 1px solid var(--color-hairline-violet); padding: 16px 0; }
.light .list li { border-bottom-color: var(--color-hairline-cloud); }
.list .date { color: var(--color-on-dark-muted); font-size: 13px; margin-right: 12px; font-family: var(--font-code); }

.ph {
  background: var(--color-surface-night);
  color: var(--color-on-dark-muted);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-xxl);
}
.light .ph { background: var(--color-hairline-cloud); color: #6b6574; }

.code {
  background: var(--color-surface-night);
  border-radius: var(--rounded-md);
  padding: 16px;
  font-family: var(--font-code);
  font-size: 16px;
  color: var(--color-on-primary);
}
.code .lime-t { color: var(--color-accent-lime); }

form label { display: block; margin: 0 0 4px; font-size: 14px; text-transform: uppercase; letter-spacing: 0.2px; }
form input, form textarea {
  width: 100%;
  max-width: 480px;
  padding: 8px 12px;
  border: 1px solid var(--color-hairline-cool);
  background: var(--color-surface-canvas-light);
  color: var(--color-ink-deep);
  font: inherit;
  margin-bottom: 12px;
  border-radius: var(--rounded-sm);
}
form input:focus, form textarea:focus {
  outline: none;
  box-shadow: rgba(0,0,0,0.15) 0 2px 10px inset;
}
form textarea { min-height: 120px; }

.squiggle {
  height: 18px;
  background:
    radial-gradient(circle at 8px 8px, var(--color-accent-lime) 4px, transparent 5px) 0 0 / 28px 18px;
}

.footer {
  background: var(--color-surface-canvas-light);
  color: var(--color-ink-deep);
  padding: 32px 24px 48px;
  font-size: 14px;
  font-weight: 400;
}
.footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; }
.footer h4 {
  margin: 0 0 12px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.25px;
  text-transform: uppercase;
}
.footer a { color: var(--color-ink-deep); display: block; margin-bottom: 8px; text-decoration: none; }
.footer p { margin: 0 0 4px; }
.footer-bottom { grid-column: 1 / -1; margin-top: 16px; color: #6b6574; }

@media (max-width: 1024px) {
  .grid, .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-2, .footer .wrap { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .grid, .grid-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 40px; }
  .nav { display: none; }
  .mascot { display: none; }
}

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