/* SPDX-License-Identifier: Apache-2.0 */

:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #56616f;
  --line: #d8dee8;
  --panel: #f7f9fc;
  --panel-strong: #eef3f8;
  --accent: #166c7d;
  --accent-strong: #0f4e5b;
  --ok: #227447;
  --warn-bg: #fff6e6;
  --warn-line: #e8c574;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.55;
  background: #ffffff;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

code,
pre {
  font-family:
    "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 16px max(24px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}

.brand,
.nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid #9fc3cb;
  background: #e7f4f6;
  color: var(--accent-strong);
  font-size: 0.78rem;
}

.nav {
  gap: 20px;
  font-size: 0.94rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent-strong);
}

.hero,
.section {
  width: min(var(--max), calc(100vw - 48px));
  margin-inline: auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 48px;
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: 80px 0 64px;
}

.hero h1,
.section h2 {
  margin: 0;
  line-height: 1.04;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 760px;
  font-size: 5.5rem;
}

.section h2 {
  font-size: 3.1rem;
}

.hero-lede,
.section-heading p,
.content-stack p,
.split p {
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-lede {
  max-width: 680px;
  margin: 24px 0 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  background: #ffffff;
}

.button.primary {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
  color: #ffffff;
}

.hero-panel,
.board-card,
.command-grid > div,
.proof-grid article {
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.hero-panel {
  padding: 24px;
  box-shadow: 0 22px 60px rgba(30, 45, 70, 0.12);
}

.panel-topline,
.evidence-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px 16px;
}

.panel-topline {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.evidence-grid {
  padding: 16px;
  border: 1px solid #c9d7e3;
  background: #ffffff;
  font-family:
    "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.86rem;
}

.evidence-grid span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.evidence-grid strong {
  color: var(--ok);
  font-weight: 800;
}

.hero-panel p {
  margin: 18px 0 0;
  color: var(--muted);
}

.section {
  padding: 76px 0;
  border-top: 1px solid var(--line);
}

.two-column,
.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  gap: 42px;
}

.content-stack > *:first-child {
  margin-top: 0;
}

.plain-list {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.plain-list li {
  position: relative;
  padding-left: 22px;
}

.plain-list li::before {
  position: absolute;
  left: 0;
  color: var(--accent);
  content: "/";
  font-weight: 800;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 32px;
}

.proof-grid,
.command-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.proof-grid article,
.command-grid > div {
  padding: 22px;
}

.proof-grid h3,
.command-grid h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.proof-grid p {
  margin: 0;
  color: var(--muted);
}

.flow {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow li {
  position: relative;
  display: grid;
  min-height: 76px;
  align-items: center;
  padding: 12px;
  border: 1px solid #b9ccd9;
  background: var(--panel-strong);
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 800;
  text-align: center;
}

.flow li:not(:last-child)::after {
  position: absolute;
  right: -10px;
  z-index: 1;
  color: var(--accent);
  content: ">";
  font-weight: 900;
}

.board-card {
  padding: 24px;
}

.board-card dl {
  display: grid;
  gap: 16px;
  margin: 0;
}

.board-card div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
}

.board-card dt {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.board-card dd {
  margin: 0;
  font-weight: 750;
}

.caution {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  gap: 42px;
  padding: 32px;
  border: 1px solid var(--warn-line);
  background: var(--warn-bg);
}

.command-grid pre {
  min-width: 0;
  margin: 0;
  padding: 14px;
  overflow-x: auto;
  border: 1px solid #cad7e2;
  background: #ffffff;
  font-size: 0.88rem;
}

.command-grid code {
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.resource-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.resource-list a {
  display: flex;
  min-width: 0;
  min-height: 74px;
  align-items: center;
  padding: 16px;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--accent-strong);
  font-weight: 800;
  text-decoration: none;
}

.resource-list a:hover {
  border-color: #9fc3cb;
  background: #f4fbfc;
}

.site-footer {
  width: min(var(--max), calc(100vw - 48px));
  margin: 0 auto;
  padding: 36px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  font-weight: 800;
}

.footer-meta a {
  color: var(--accent-strong);
}

.site-footer p {
  max-width: 760px;
  margin: 12px 0 0;
}

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  .hero,
  .two-column,
  .split,
  .caution {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
  }

  .hero h1 {
    font-size: 4.2rem;
  }

  .section h2 {
    font-size: 2.7rem;
  }

  .proof-grid,
  .command-grid,
  .resource-list {
    grid-template-columns: 1fr;
  }

  .flow {
    grid-template-columns: 1fr;
  }

  .flow li {
    min-height: 58px;
    text-align: left;
  }

  .flow li:not(:last-child)::after {
    right: auto;
    bottom: -17px;
    left: 16px;
    transform: rotate(90deg);
  }
}

@media (max-width: 560px) {
  .hero,
  .section,
  .site-footer {
    width: min(100vw - 32px, var(--max));
  }

  .hero h1 {
    font-size: 2.6rem;
  }

  .section h2 {
    font-size: 2.1rem;
  }

  .actions,
  .button {
    width: 100%;
  }

  .caution {
    padding: 24px;
  }

  .board-card div,
  .panel-topline,
  .evidence-grid {
    grid-template-columns: 1fr;
  }
}