:root {
  --bg: #f7f7f5;
  --bg-elev: #ffffff;
  --ink: #0a0a0a;
  --ink-2: #2a2a2a;
  --muted: #5c5c5c;
  --line: #d8d8d4;
  --line-strong: #111111;
  --chip: #efefeb;
  --code-bg: #111111;
  --code-fg: #f2f2ee;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.04), 0 12px 32px rgba(0, 0, 0, 0.05);
  --radius: 14px;
  --max: 1120px;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 1px 1px, rgba(0, 0, 0, 0.06) 1px, transparent 0) 0 0 / 22px 22px,
    var(--bg);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.55;
  letter-spacing: -0.011em;
}

a {
  color: inherit;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}

/* Header */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 247, 245, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.brand-mark {
  width: 32px;
  height: 30px;
  object-fit: contain;
}

.brand span {
  font-size: 17px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  font-size: 14px;
  color: var(--ink-2);
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-links a.btn-solid {
  color: #fff;
}

.nav-links a.btn-solid:hover {
  color: #fff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 560;
  font-size: 14px;
  line-height: 1;
  padding: 11px 16px;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-solid {
  background: var(--ink);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--ink);
}

/* Hero */
.hero {
  padding: 84px 0 72px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--bg-elev);
  border-radius: 999px;
  padding: 6px 10px 6px 8px;
  margin: 0 0 22px;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink);
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 0.95;
  letter-spacing: -0.055em;
  font-weight: 650;
  max-width: 14ch;
}

.hero h1 em {
  font-style: normal;
  display: block;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: -0.04em;
}

.lede {
  max-width: 58ch;
  color: var(--ink-2);
  margin: 0 0 28px;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 42px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
}

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel-pad {
  padding: 22px;
}

.kicker {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.hierarchy {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 13px;
}

.chip {
  background: var(--chip);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
}

.arrow {
  color: var(--muted);
}

.note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.code-panel {
  background: var(--code-bg);
  color: var(--code-fg);
  overflow: hidden;
}

.code-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid #2a2a2a;
  font-family: var(--mono);
  font-size: 12px;
  color: #bdbdb5;
}

.ex {
  margin-top: 4px;
}

.ex-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.ex-tab {
  font-family: inherit;
  font-size: 13px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--ink-2);
  cursor: pointer;
}

.ex-tab.is-on {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.ex-pane[hidden] {
  display: none;
}

.code-panel pre {
  margin: 0;
  padding: 18px 16px 20px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
}

.code-panel code {
  font-family: inherit;
}

.trust-strip {
  border-block: 1px solid var(--line);
  background: var(--bg-elev);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 18px 0;
}

.trust-grid span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.35;
  text-align: center;
}

.trust-grid span + span {
  border-left: 1px solid var(--line);
}

/* Sections */
section {
  padding: 28px 0 8px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 22px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.section-head p {
  margin: 0;
  max-width: 42ch;
  color: var(--muted);
  font-size: 15px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 18px 18px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  letter-spacing: -0.03em;
}

.card p,
.card li {
  color: var(--ink-2);
  font-size: 14.5px;
}

.card ul {
  margin: 0;
  padding-left: 18px;
}

.card li + li {
  margin-top: 6px;
}

.mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 12px;
}

/* Table */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}

th,
td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 560;
  background: #f3f3ef;
}

tr:last-child td {
  border-bottom: 0;
}

td:first-child {
  font-weight: 560;
  white-space: nowrap;
}

/* Interfaces */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.list-block {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.list-block ol,
.list-block ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.list-block li + li {
  margin-top: 8px;
}

/* CTA */
.cta {
  margin: 48px 0 20px;
  background: var(--ink);
  color: #f6f6f2;
  border-radius: 20px;
  padding: 36px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.cta h2 {
  margin: 0 0 8px;
  letter-spacing: -0.04em;
  font-size: 32px;
}

.cta p {
  margin: 0;
  color: #c9c9c2;
  max-width: 52ch;
}

.cta .btn-solid {
  background: #fff;
  color: #111;
}

.cta .btn-ghost {
  border-color: #444;
  color: #fff;
}

.cta-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

/* Footer */
footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 13.5px;
}

.foot {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.foot a {
  color: var(--ink-2);
  text-decoration: none;
}

.foot a:hover {
  text-decoration: underline;
}

.foot-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Mobile */
.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  font-family: inherit;
  font-size: 13px;
}

@media (max-width: 860px) {
  .hero-grid,
  .cards,
  .split,
  .cta {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .trust-grid span:nth-child(3) {
    border-left: 0;
  }

  .menu-btn {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 16px;
    gap: 12px;
  }

  .nav-links.open {
    display: flex;
  }
}