/* ---------- Tokens (Remote ARM brand: #fafaf9 bg / #1d4ed8 accent) ---------- */
:root {
  --bg: #fafaf9;
  --bg-soft: #f1f1ee;
  --surface: #ffffff;
  --surface-2: #eeeeec;
  --ink: #1c1c1e;
  --ink-2: #6d6d72;
  --ink-3: #9a9a9e;
  --rule: rgba(0, 0, 0, 0.10);
  --rule-strong: rgba(0, 0, 0, 0.16);
  --accent: #1d4ed8;
  --accent-soft: rgba(29, 78, 216, 0.09);
  --accent-ink: #ffffff;
  --terminal-bg: #0e1116;
  --terminal-ink: #e6e8eb;
  --terminal-muted: #7c8593;
  --good: #1f8a4c;

  --radius-control: 14px;
  --radius-tile: 20px;
  --radius-card: 24px;
  --radius-major: 28px;

  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  --serif: "Instrument Serif", Georgia, "Times New Roman", serif;

  --wrap: 1120px;
  --nav-h: 84px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
code { font-family: var(--mono); }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  z-index: 999;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 18px;
  border-radius: var(--radius-control);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.15s ease, background-color 0.15s ease, opacity 0.15s ease;
}
.btn:active { transform: scale(0.97); }

.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #000; }

.btn-primary-inverse { background: #fff; color: var(--ink); }
.btn-primary-inverse:hover { background: #eaeaea; }

.btn-secondary { background: var(--surface-2); color: var(--ink); }
.btn-secondary:hover { background: #e4e4e1; }

.btn-ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn-ghost:hover { background: var(--surface-2); }

.btn-lg { height: 48px; padding: 0 22px; font-size: 15px; }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
}

.nav-inner {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
}
.brand-mark { width: 26px; height: 26px; color: var(--ink); flex-shrink: 0; }
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: -0.01em; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-2);
}
.nav-links a:hover { color: var(--ink); }

.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-github { padding: 0 14px; }
.nav-github span { display: inline; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--rule);
  background: var(--surface);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  margin: 0 auto;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 24px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
}
.mobile-menu a {
  padding: 12px 4px;
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid var(--rule);
}
.mobile-menu .btn { margin-top: 12px; justify-content: center; }
.mobile-menu.open { display: flex; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: calc(var(--nav-h) + 96px);
  padding-bottom: 64px;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-soft) 0%, var(--bg) 55%);
}

.hero-glow {
  position: absolute;
  top: -220px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 620px;
  background: radial-gradient(closest-side, var(--accent-soft), transparent 70%);
  filter: blur(10px);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  text-align: center;
  max-width: 780px;
}

.hero-title {
  margin: 0 0 20px;
  font-size: clamp(34px, 5.6vw, 60px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.hero-sub {
  margin: 0 auto 32px;
  max-width: 560px;
  font-size: 17px;
  color: var(--ink-2);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Marquee */
.marquee-mask {
  position: relative;
  margin-top: 88px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee { width: 100%; }
.marquee-track {
  display: flex;
  align-items: center;
  gap: 28px;
  width: max-content;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--ink-3);
  animation: marquee 28s linear infinite;
}
.marquee-track span:nth-child(odd) { color: var(--ink-3); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-tight { padding-top: 0; }

.section-title {
  margin: 0 0 12px;
  text-align: center;
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.section-sub {
  margin: 0 0 48px;
  text-align: center;
  font-size: 16px;
  color: var(--ink-2);
}

.section-title-left {
  margin: 0 0 18px;
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* ---------- Cards / tiles ---------- */
.card {
  background: var(--surface-2);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--rule);
}

.tile {
  height: 180px;
  position: relative;
  background: var(--bg);
}
.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  filter: blur(30px);
  opacity: 0.55;
}
.tile-a::before { background: radial-gradient(circle at 30% 30%, #1d4ed8, transparent 60%), radial-gradient(circle at 75% 70%, #60a5fa, transparent 55%); }
.tile-b::before { background: radial-gradient(circle at 70% 25%, #7c6cf0, transparent 60%), radial-gradient(circle at 25% 75%, #1d4ed8, transparent 55%); }
.tile-c::before { background: radial-gradient(circle at 25% 70%, #14b8a6, transparent 60%), radial-gradient(circle at 75% 25%, #1d4ed8, transparent 55%); }
.tile-d::before { background: radial-gradient(circle at 60% 60%, #f59e0b, transparent 60%), radial-gradient(circle at 20% 20%, #1d4ed8, transparent 55%); }
.tile-e::before { background: radial-gradient(circle at 30% 60%, #1d4ed8, transparent 60%), radial-gradient(circle at 80% 30%, #14b8a6, transparent 55%); }
.tile-f::before { background: radial-gradient(circle at 70% 70%, #7c6cf0, transparent 60%), radial-gradient(circle at 20% 20%, #1d4ed8, transparent 55%); }
.tile-g::before { background: radial-gradient(circle at 25% 30%, #f59e0b, transparent 60%), radial-gradient(circle at 75% 75%, #1d4ed8, transparent 55%); }
.tile-h::before { background: radial-gradient(circle at 65% 30%, #14b8a6, transparent 60%), radial-gradient(circle at 25% 80%, #7c6cf0, transparent 55%); }

.card-body { padding: 20px; background: var(--surface); }
.card-body h3 { margin: 0 0 8px; font-size: 16px; font-weight: 700; }
.card-body p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.55; }
.card-body code {
  font-size: 12.5px;
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 5px;
}

/* Carousel */
.carousel-mask { overflow: hidden; }
.carousel {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(300px, 1fr);
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px var(--nav-h) 4px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  scrollbar-width: none;
}
.carousel::-webkit-scrollbar { display: none; }
.carousel .card { scroll-snap-align: start; }

.dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 20px;
}
.dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rule-strong);
  transition: background 0.2s ease, transform 0.2s ease;
}
.dots span.active { background: var(--ink); transform: scale(1.3); }

/* 2x2 grid */
.grid-2x2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.fineprint {
  text-align: center;
  color: var(--ink-2);
  font-size: 14px;
}
.fineprint strong { color: var(--ink); }

/* ---------- API section ---------- */
.api-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.api-desc { color: var(--ink-2); font-size: 15.5px; line-height: 1.65; margin: 0 0 24px; }

.route-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.route-badges code {
  font-size: 12.5px;
  background: var(--surface-2);
  border: 1px solid var(--rule);
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--ink-2);
}

.code-card {
  background: var(--terminal-bg);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: 0 20px 60px -20px rgba(14, 17, 22, 0.45);
}
.code-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.dots-3 { display: flex; gap: 6px; }
.dots-3 span { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,0.15); }
.copy-btn {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  border: 1px solid rgba(255,255,255,0.12);
  background: transparent;
  color: var(--terminal-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.copy-btn:hover { color: #fff; border-color: rgba(255,255,255,0.3); }
.copy-btn.copied { color: #4ade80; border-color: rgba(74,222,128,0.4); }

.code-block {
  margin: 0;
  padding: 20px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.75;
  color: var(--terminal-ink);
  white-space: pre-wrap;
  word-break: break-word;
}
.tok-muted { color: var(--terminal-muted); }
.tok-str { color: #7dd3fc; }

/* ---------- Install / pricing-style ---------- */
.pricing {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.plan-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-card);
  padding: 28px;
  display: flex;
  flex-direction: column;
}
.plan-card-dark { background: var(--ink); color: #fff; border-color: var(--ink); }
.plan-card-dark .plan-desc,
.plan-card-dark .plan-list li { color: rgba(255,255,255,0.72); }
.plan-card-dark .plan-eyebrow { color: rgba(255,255,255,0.55); }

.plan-eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 14px;
  display: block;
}
.plan-desc { margin: 0 0 20px; font-size: 15px; color: var(--ink-2); }
.plan-desc-inline { margin: 4px 0 0; font-size: 14px; color: var(--ink-2); }

.plan-list { list-style: none; margin: 0 0 28px; padding: 0; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.plan-list li {
  font-size: 14px;
  color: var(--ink-2);
  padding-left: 22px;
  position: relative;
}
.plan-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 12px;
  height: 8px;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  opacity: 0.55;
}

.plan-btn { justify-content: center; width: 100%; }

.custom-banner {
  background: var(--surface-2);
  border-radius: var(--radius-card);
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.custom-banner .plan-eyebrow { margin-bottom: 4px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: 20px 0;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--ink-3);
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after { content: "–"; }
.faq-answer {
  padding-top: 12px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.65;
  max-width: 620px;
}

/* ---------- Closing ---------- */
.closing {
  padding: 140px 0 150px;
  text-align: center;
  background: var(--bg-soft);
}
.closing-line {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(32px, 6vw, 56px);
  margin: 0 0 36px;
  color: var(--ink);
}

/* ---------- Footer ---------- */
.footer { padding: 64px 0 28px; border-top: 1px solid var(--rule); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
}
.footer-brand .brand { margin-bottom: 10px; }
.footer-tagline { color: var(--ink-2); font-size: 14px; margin: 0 0 16px; }
.footer-social { display: inline-flex; color: var(--ink-2); }
.footer-social:hover { color: var(--ink); }

.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 { margin: 0 0 4px; font-size: 13px; color: var(--ink-3); font-weight: 600; }
.footer-col a, .footer-static { font-size: 14px; color: var(--ink-2); }
.footer-col a:hover { color: var(--ink); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--ink-3);
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .api-grid { grid-template-columns: 1fr; gap: 36px; }
  .grid-2x2 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav-links, .nav-actions { display: none; }
  .nav-toggle { display: flex; }
  .hero { padding-top: calc(var(--nav-h) + 56px); }
  .grid-2x2 { grid-template-columns: 1fr; }
  .pricing { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 72px 0; }
  .closing { padding: 96px 0 108px; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
}