:root {
  --dp-ink: #090b0a;
  --dp-paper: #f2f0e8;
  --dp-card: #faf9f4;
  --dp-muted: #696c67;
  --dp-line: rgba(9, 11, 10, 0.14);
  --dp-lime: #d9ff20;
  --dp-radius: 24px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--dp-ink);
  color: var(--dp-paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button, summary { font: inherit; }

.dp-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding: 10px max(18px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(9, 11, 10, 0.92);
  backdrop-filter: blur(16px);
}

.dp-brand {
  flex: 0 0 auto;
  color: var(--dp-paper);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.dp-tabs {
  display: flex;
  gap: 6px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.dp-tabs::-webkit-scrollbar { display: none; }

.dp-tabs a {
  flex: 0 0 auto;
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  color: #b9bcb7;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.dp-tabs a:hover,
.dp-tabs a[aria-current],
.dp-nav a[aria-current="page"] {
  border-color: var(--dp-lime);
  background: var(--dp-lime);
  color: var(--dp-ink);
}

.dp-free {
  flex: 0 0 auto;
  color: #8b8e89;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.09em;
}

.dp-main {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

.dp-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  margin-bottom: 28px;
}

.dp-kicker {
  margin: 0 0 12px;
  color: var(--dp-lime);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.dp-intro h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.45rem, 5vw, 4.8rem);
  line-height: 0.92;
  letter-spacing: -0.065em;
}

.dp-intro > p:not(.dp-kicker) {
  max-width: 720px;
  margin: 0;
  color: #b9bcb7;
  font-size: clamp(0.95rem, 1.6vw, 1.12rem);
  line-height: 1.55;
}

.dp-intro > p:not(.dp-kicker) strong { color: var(--dp-paper); }

.dp-intro > small {
  max-width: 720px;
  color: #8b8e89;
  font-size: 0.82rem;
  line-height: 1.5;
}

.dp-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.dp-card {
  overflow: hidden;
  border: 1px solid var(--dp-line);
  border-radius: var(--dp-radius);
  background: var(--dp-paper);
  color: var(--dp-ink);
}

.dp-card > header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 20px 20px 14px;
}

.dp-card > header span {
  color: #858982;
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.dp-card h2 {
  margin: 0;
  font-size: clamp(1.25rem, 2.4vw, 1.8rem);
  line-height: 1;
  letter-spacing: -0.035em;
}

.dp-card > header button {
  min-width: 76px;
  padding: 10px 13px;
  border: 1px solid var(--dp-ink);
  border-radius: 999px;
  background: var(--dp-ink);
  color: var(--dp-paper);
  cursor: pointer;
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.07em;
}

.dp-card > header button:hover,
.dp-card > header button.is-copied {
  border-color: var(--dp-lime);
  background: var(--dp-lime);
  color: var(--dp-ink);
}

.dp-card > p {
  min-height: 46px;
  margin: 0;
  padding: 0 20px 18px;
  color: var(--dp-muted);
  line-height: 1.45;
}

.dp-card details { border-top: 1px solid var(--dp-line); }

.dp-card summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.dp-card summary::-webkit-details-marker { display: none; }
.dp-card summary::after { content: "+"; font-size: 1.1rem; }
.dp-card details[open] summary::after { content: "-"; }

.dp-card pre {
  max-height: 24rem;
  margin: 0;
  padding: 18px 20px 22px;
  overflow: auto;
  border-top: 1px solid var(--dp-line);
  background: var(--dp-card);
  color: #252824;
  font-family: inherit;
  font-size: 0.86rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.dp-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 22px 0 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #777a76;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.dp-toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  padding: 13px 16px;
  border-radius: 999px;
  background: var(--dp-lime);
  color: var(--dp-ink);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.dp-toast.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 760px) {
  .dp-topbar { align-items: flex-start; flex-wrap: wrap; padding-inline: 14px; }
  .dp-brand { padding-top: 9px; }
  .dp-tabs { order: 3; width: 100%; padding-bottom: 2px; }
  .dp-free { display: none; }
  .dp-main { width: min(100% - 24px, 620px); padding: 32px 0 56px; }
  .dp-intro { grid-template-columns: 1fr; gap: 10px; margin-bottom: 24px; }
  .dp-intro h1 { font-size: clamp(2.35rem, 12vw, 3.7rem); }
  .dp-grid { grid-template-columns: 1fr; gap: 12px; }
  .dp-card > header { grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }
  .dp-card > header button { grid-column: auto; width: auto; }
  .dp-card > p { min-height: 0; }
  .dp-footer { width: calc(100% - 24px); flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .dp-toast { transition: none; }
}