/* Inspiral Climb public portal. System fonts only; no third-party CDNs. */
:root {
  color-scheme: light dark;
  --paper: #eef1ee;
  --paper-2: #e3e8e3;
  --surface: #f7f8f6;
  --ink: #171c19;
  --ink-soft: #5c655e;
  --line: #c9d1cb;
  --accent: #2c4a3e;
  --accent-2: #3d5f50;
  --accent-ink: #f3f7f4;
  --shadow: 0 28px 64px -36px rgb(23 28 25 / 0.42);
  --sans: "Avenir Next", "Hiragino Sans", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", ui-sans-serif, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --radius: 12px;
  --radius-sm: 8px;
  --max: 1180px;
  --nav: 64px;
  --z-grain: 6;
  --z-nav: 10;
  --z-skip: 20;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #141714;
    --paper-2: #1b201c;
    --surface: #1e2420;
    --ink: #e7ebe7;
    --ink-soft: #9aa39a;
    --line: #2c342f;
    --accent: #8fad97;
    --accent-2: #a4c0ab;
    --accent-ink: #141714;
    --shadow: 0 28px 64px -32px rgb(0 0 0 / 0.55);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: var(--z-grain);
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: var(--z-skip);
  background: var(--ink);
  color: var(--paper);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}
.skip:focus { top: 12px; }

.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  height: var(--nav);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}
@supports (backdrop-filter: blur(16px)) {
  .nav { backdrop-filter: blur(16px); }
}
@media (prefers-reduced-transparency: reduce) {
  .nav { background: var(--paper); backdrop-filter: none; }
}
.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--nav);
  flex-wrap: nowrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -0.04em;
  color: var(--ink);
}
.brand:hover { color: var(--ink); }
.brand-mark { width: 32px; height: 32px; flex: none; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--ink-soft);
  font-size: 14px;
  white-space: nowrap;
}
.nav-links a[aria-current="page"] { color: var(--ink); font-weight: 600; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .2s cubic-bezier(0.16, 1, 0.3, 1), background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover { color: inherit; }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-2); color: var(--accent-ink); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { background: var(--surface); color: var(--ink); }

.hero {
  display: grid;
  grid-template-columns: minmax(18rem, 34rem) minmax(0, 1fr);
  align-items: stretch;
  height: min(36rem, calc(100dvh - var(--nav)));
}
.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 3rem 0 3.25rem;
  width: min(34rem, calc(100% - 40px));
  margin-left: max(20px, calc((100vw - var(--max)) / 2));
}
.eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
h1, h2, h3 {
  font-family: var(--sans);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.12;
  text-wrap: balance;
}
.hero h1 { font-size: clamp(2.15rem, 4.6vw, 3.6rem); margin: 0 0 16px; padding-bottom: 4px; }
#product, #open, #company, #start, #main { scroll-margin-top: calc(var(--nav) + 16px); }
.hero h1 em {
  font-style: italic;
  font-weight: 650;
  color: var(--accent);
}
.lede {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 42ch;
  margin: 0 0 22px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-visual {
  margin: 0;
  min-height: 22rem;
  overflow: hidden;
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.band { padding: 5.5rem 0 6.5rem; }
.sec-title { font-size: clamp(1.7rem, 3.2vw, 2.5rem); margin: 0 0 10px; }
.sec-lead { color: var(--ink-soft); max-width: 42ch; margin: 0 0 2rem; }

.pillars {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  grid-template-areas:
    "routes routes climbs"
    "community feed video";
  gap: 12px;
}
.pillar {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.35rem 1.4rem 1.5rem;
  min-height: 10.5rem;
}
.pillar h3 { margin: 0 0 8px; font-size: 1.2rem; }
.pillar p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }
#routes { grid-area: routes; padding: 0; overflow: hidden; justify-content: stretch; }
#routes img { width: 100%; height: 168px; object-fit: cover; flex: none; }
#routes .pillar-body { padding: 1.2rem 1.35rem 1.4rem; }
#climbs { grid-area: climbs; }
#community-routes { grid-area: community; }
#feed { grid-area: feed; }
#video {
  grid-area: video;
  background: var(--accent);
  color: var(--accent-ink);
}
#video p { color: color-mix(in srgb, var(--accent-ink) 78%, transparent); }

.bleed { margin: 0; }
.bleed img {
  width: 100%;
  height: min(28rem, 52vw);
  object-fit: cover;
}

.start-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.start-list li {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 38rem);
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}
.start-list li:last-child { border-bottom: 1px solid var(--line); }
.start-index {
  font-family: var(--mono);
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-top: 0.35rem;
}
.start-list h3 { margin: 0 0 6px; font-size: 1.35rem; }
.start-list p { margin: 0; color: var(--ink-soft); }

.open {
  background: var(--paper-2);
  border-radius: 16px;
  padding: 2.4rem;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: center;
}
.open h2 { margin: 0 0 10px; font-size: clamp(1.55rem, 3vw, 2.1rem); }
.open p { margin: 0 0 12px; color: var(--ink-soft); }
.search {
  display: flex;
  gap: 8px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 6px 6px 16px;
}
.search code {
  flex: 1;
  font: 650 15px/1.4 var(--sans);
  color: var(--ink);
  padding: 6px 4px;
}
.search .btn { background: var(--accent); color: var(--accent-ink); }
.search .btn[data-copied="true"] { background: #315c49; color: #f3f7f4; }
.hint { font-size: 13px; color: var(--ink-soft); margin: 12px 0 0; }

.company {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  padding-top: 0.5rem;
}
.company dt {
  color: var(--ink-soft);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 16px;
}
.company dt:first-child { margin-top: 0; }
.company dd { margin: 4px 0 0; font-size: 1.05rem; }
.legal-note { color: var(--ink-soft); font-size: 0.95rem; margin: 0; max-width: 46ch; }

.doc { padding: 3rem 0 5rem; }
.doc-card { max-width: 46rem; }
.doc-card h1 { font-size: clamp(2rem, 4vw, 2.8rem); margin: 0 0 8px; padding-bottom: 4px; }
.doc-meta { color: var(--ink-soft); margin: 0 0 1.6rem; }
.doc-card h2 { font-size: 1.25rem; margin: 2rem 0 8px; }
.doc-card p, .doc-card li { color: var(--ink-soft); }
.doc-card .table-wrap { overflow-x: auto; }
.doc-card table { width: 100%; min-width: 36rem; border-collapse: collapse; font-size: 14px; }
.doc-card th, .doc-card td { border-bottom: 1px solid var(--line); text-align: left; padding: 10px 8px; vertical-align: top; }
.doc-card th { color: var(--ink); }

.footer {
  padding: 2rem 0 2.4rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13px;
}
.footer-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-filings { margin-top: 14px; }
.filings { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.filings a { text-decoration: underline; text-underline-offset: 3px; color: var(--ink); }
.badge { display: inline-flex; align-items: center; gap: 6px; }

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    height: auto;
  }
  .hero-visual { min-height: 16rem; height: 18rem; order: -1; }
  .hero-copy {
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
    padding: 1.6rem 0 2.4rem;
    justify-content: flex-start;
  }
  .pillars, .open, .company { grid-template-columns: 1fr; }
  .pillars { grid-template-areas: "routes" "climbs" "community" "feed" "video"; }
  #routes img { height: 180px; }
  .start-list li { grid-template-columns: 3.2rem minmax(0, 1fr); }
  .nav-links { gap: 14px; font-size: 13px; }
  .open, .doc-card { padding-left: 0; padding-right: 0; }
  .open { padding: 1.5rem; }
}

@media (max-width: 640px) {
  .wrap { width: min(var(--max), calc(100% - 28px)); }
  .nav-links { display: none; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn, .search .btn { width: 100%; }
  .search { flex-direction: column; align-items: stretch; border-radius: var(--radius); padding: 10px; }
  .lede { max-width: 100%; }
}

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