/* Hallmark · genre: modern-minimal · macrostructure: Stat-Led · theme: Quiet
 * H4 knobs: number=mono-tabular · qualifier below · cta=outlined-pill
 * F3 knobs: columns=3 · rules=every-row · numbers=tabular
 * nav: N5 floating pill · footer: Ft2 inline rule · enrichment: none
 * motion: number-reveal · caret-blink (in-command only) · cta-hover-lift
 * inference: audience=多 agent 重度用户 · use=立即安装 · tone=utilitarian
 * contrast: pass (46–50) · nav/footer/hero: pass (51–55) · honest: pass (56)
 * chrome: pass (57) · tokens: pass (58) · responsive: pass (59) · icons: pass (60)
 * mobile: pass (36, 59, 61–69)
 */
@import url("tokens.css");
@import url("https://fonts.googleapis.com/css2?family=Geist:wght@400;700&family=Geist+Mono:wght@500&display=swap");

* { box-sizing: border-box; margin: 0; }

html { overflow-x: clip; }
body {
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  font-weight: 400;
}

.wrap { width: 100%; max-width: 66rem; margin-inline: auto; padding-inline: clamp(1rem, 4vw, 3rem); }

/* ---- N5 floating pill nav ------------------------------------------------ */
.nv {
  position: fixed;
  inset: var(--space-md) auto auto 50%;
  transform: translateX(-50%);
  z-index: var(--z-sticky);
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-2xs) var(--space-sm);
  background: color-mix(in oklch, var(--color-paper) 78%, transparent);
  backdrop-filter: blur(14px) saturate(120%);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 24px -12px color-mix(in oklab, var(--color-ink) 22%, transparent);
}
.nv__mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
  color: var(--color-ink);
  text-decoration: none;
  padding: var(--space-2xs) var(--space-2xs);
  white-space: nowrap;
}
.nv__links { display: flex; align-items: center; gap: var(--space-2xs); list-style: none; padding: 0; }
.nv__link {
  display: inline-block;
  padding: var(--space-2xs) var(--space-sm);
  min-height: 32px;
  font-size: var(--text-sm);
  color: var(--color-muted);
  text-decoration: none;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: color var(--dur-micro) var(--ease-out), background-color var(--dur-micro) var(--ease-out);
}
.nv__link:hover { color: var(--color-ink); background: var(--color-paper-2); }
.nv__link:active { transform: translateY(1px); }
.nv__link:focus-visible, .nv__mark:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }
@media (max-width: 39.99rem) { .nv__link--adapters { display: none; } }

/* ---- hero · H4 stat-led -------------------------------------------------- */
.hero { padding-block: var(--space-3xl) var(--space-4xl); } /* 54: sits into the page */
.hero__grid { display: grid; gap: var(--space-lg); }
@media (min-width: 40rem) {
  .hero__grid { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: end; gap: var(--space-xl); }
}
.figure {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--text-stat);
  line-height: 0.85;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
  min-width: 0;
}
.figure .unit { font-size: var(--text-xl); letter-spacing: 0; color: var(--color-neutral); margin-inline-start: var(--space-xs); }
.hero__right { display: grid; gap: var(--space-md); padding-block-end: var(--space-sm); }
.qualifier { font-size: var(--text-md); line-height: 1.3; letter-spacing: -0.01em; font-weight: 700; text-wrap: balance; }
.lede { max-width: 46ch; color: var(--color-muted); overflow-wrap: anywhere; }
.hero__cta { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-md); margin-block-start: var(--space-2xs); }

/* pills — genre canonical pair: ink-filled primary, outlined secondary */
.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  min-height: 44px;
  padding: var(--space-xs) var(--space-lg);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), transform 100ms var(--ease-out);
}
.pill--fill { background: var(--color-ink); color: var(--color-paper); border: var(--rule-hair) solid var(--color-ink); }
.pill--fill:hover { background: var(--color-ink-hover); }
.pill--line { background: transparent; color: var(--color-ink); border: var(--rule-hair) solid var(--color-ink); }
.pill--line:hover { background: var(--color-paper-2); }
.pill:active { transform: translateY(1px); }
.pill:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.pill[data-state="copied"] { background: var(--color-ink-hover); }
.pill:disabled, .copy:disabled { opacity: 0.55; cursor: not-allowed; }

/* typographic link · C3 */
.tlink {
  align-self: center;
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  white-space: nowrap;
  transition: text-decoration-thickness var(--dur-micro) var(--ease-out);
}
.tlink:hover { text-decoration-thickness: 2px; }
.tlink:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }

/* ---- S2 hanging section heads ------------------------------------------- */
.sec { padding-block: var(--space-3xl); }
.sec--tight { padding-block: var(--space-2xl); }
.head-hang { padding-block: 0 var(--space-lg); }
.head-hang h2 { font-size: var(--text-xl); letter-spacing: -0.02em; line-height: 1.15; font-weight: 700; }
.head-note { color: var(--color-muted); max-width: 60ch; margin-block-start: var(--space-2xs); }

/* ---- install · command block -------------------------------------------- */
.code {
  position: relative;
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.7;
  overflow-x: auto;
}
.code .p { color: var(--color-neutral); user-select: none; }
.code .c { color: var(--color-neutral); }
.code .caret { display: inline-block; width: 1ch; background: var(--color-ink); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.copy {
  position: absolute;
  inset: var(--space-xs) var(--space-xs) auto auto;
  min-height: 32px;
  padding: var(--space-3xs) var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-muted);
  background: var(--color-paper);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--dur-micro) var(--ease-out), border-color var(--dur-micro) var(--ease-out);
}
.copy:hover { color: var(--color-ink); border-color: var(--color-neutral); }
.copy:active { transform: translateY(1px); }
.copy:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.copy[data-state="copied"] { color: var(--color-ink); border-color: var(--color-ink); }
.install-note { margin-block-start: var(--space-sm); font-size: var(--text-sm); color: var(--color-muted); }
.install-note code { font-family: var(--font-mono); font-size: var(--text-xs); }

/* ---- how · command rows -------------------------------------------------- */
.rows { display: grid; gap: 0; border-block-start: var(--rule-hair) solid var(--color-rule); }
.row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2xs) var(--space-lg);
  padding-block: var(--space-md);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}
@media (min-width: 40rem) { .row { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); align-items: baseline; } }
.row__cmd { font-family: var(--font-mono); font-size: var(--text-sm); overflow-wrap: anywhere; min-width: 0; }
.row__cmd .flag { color: var(--color-neutral); }
.row__what { color: var(--color-muted); font-size: var(--text-sm); }

/* ---- adapters · F3 tabular spec sheet ------------------------------------ */
.spec { width: 100%; border-collapse: collapse; font-size: var(--text-sm); font-variant-numeric: tabular-nums; }
.spec th {
  text-align: start;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-neutral);
  padding-block: var(--space-2xs);
}
.spec th:not(:first-child), .spec td:not(:first-child) { padding-inline-start: var(--space-md); }
.spec td, .spec th { padding-block: var(--space-sm); border-block-end: var(--rule-hair) solid var(--color-rule); vertical-align: top; }
.spec td:first-child { font-family: var(--font-mono); font-weight: 500; }
.spec .muted { color: var(--color-muted); }
.spec-more { margin-block-start: var(--space-md); font-size: var(--text-sm); color: var(--color-muted); }
@media (max-width: 39.99rem) {
  .spec th { display: none; }
  .spec, .spec tbody, .spec tr, .spec td { display: block; width: 100%; }
  .spec tr { padding-block: var(--space-sm); border-block-end: var(--rule-hair) solid var(--color-rule); }
  .spec td { border: 0; padding-block: var(--space-3xs); }
  .spec td:not(:first-child) { padding-inline-start: 0; }
  .spec td::before {
    content: attr(data-label);
    display: inline-block;
    min-width: 6.5em;
    color: var(--color-neutral);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
}

/* ---- safety list ---------------------------------------------------------- */
.safety { display: grid; gap: var(--space-md); max-width: 60ch; }
.safety li { list-style: none; display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-3xs); }
@media (min-width: 40rem) { .safety li { grid-template-columns: minmax(0, 10rem) minmax(0, 1fr); } }
.safety b { font-weight: 700; }
.safety span { color: var(--color-muted); font-size: var(--text-sm); }

/* ---- CTA strip ------------------------------------------------------------ */
.strip { border-block: var(--rule-hair) solid var(--color-rule); padding-block: var(--space-2xl); }
.strip__in { display: grid; gap: var(--space-md); justify-items: start; }
.strip__line { font-size: var(--text-lg); letter-spacing: -0.015em; font-weight: 700; line-height: 1.2; text-wrap: balance; max-width: 30ch; }

/* ---- Ft2 inline rule footer ----------------------------------------------- */
.foot { padding-block: var(--space-xl) var(--space-2xl); }
.foot p {
  border-block-start: var(--rule-hair) solid var(--color-rule);
  padding-block-start: var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-muted);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs) var(--space-md);
}
.foot a { color: var(--color-muted); text-decoration: none; white-space: nowrap; }
.foot a:hover { color: var(--color-ink); text-decoration: underline; text-underline-offset: 3px; }
.foot a:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }

/* ---- number reveal -------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }
  .code .caret { animation: none; }
}