:root {
  --bg: #f4f6f1;
  --paper: #fffdfa;
  --ink: #17201c;
  --muted: #68746b;
  --line: #dce3d8;
  --green: #146b47;
  --green-2: #e4f4ec;
  --blue: #254f8e;
  --gold: #b88724;
  --danger: #a64735;
  --shadow: 0 18px 60px rgba(23, 32, 28, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
.button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  min-height: 40px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  cursor: pointer;
}

.button.primary,
button {
  background: var(--green);
  color: white;
  border-color: var(--green);
}

.button.secondary {
  background: transparent;
}

#app {
  display: grid;
  grid-template-columns: 276px minmax(0, 1fr);
  min-height: 100vh;
}

.rail {
  position: sticky;
  top: 0;
  height: 100vh;
  background: #111a16;
  color: white;
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: #b9e8ce;
  color: #0e2a1d;
  display: grid;
  place-items: center;
  font-weight: 900;
}

.brand small,
.panel-top span,
small {
  color: var(--muted);
}

.rail .brand small {
  color: #aebbb3;
  display: block;
  margin-top: 2px;
}

nav {
  display: grid;
  gap: 8px;
}

nav a {
  color: #d8e4dd;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
}

nav a:hover {
  background: rgba(255, 255, 255, 0.08);
}

.local-status {
  margin-top: auto;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 12px;
  color: #d8e4dd;
  font-size: 13px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.local-status span {
  width: 9px;
  height: 9px;
  border-radius: 99px;
  background: #61d99b;
}

main {
  padding: 28px;
}

.hero,
.section {
  max-width: 1180px;
  margin: 0 auto 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero {
  min-height: 620px;
  padding: 56px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 430px;
  align-items: center;
  gap: 44px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(42px, 6vw, 76px);
  line-height: 0.96;
  margin-bottom: 24px;
  max-width: 760px;
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.05;
  margin-bottom: 14px;
}

h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.lede,
.section-head p,
.card p,
.interaction-grid p,
.mock-detail p,
.acceptance p {
  color: var(--muted);
  line-height: 1.72;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: #f8faf5;
}

.panel-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 18px 0;
}

.metric-grid div {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.metric-grid strong {
  display: block;
  font-size: 34px;
  margin-top: 6px;
}

.secure-stack {
  display: grid;
  gap: 10px;
}

.secure-stack div {
  display: flex;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: white;
  color: #35423a;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 99px;
  flex: 0 0 auto;
}

.dot.safe {
  background: var(--green);
}

.dot.warn {
  background: var(--gold);
}

.section {
  padding: 44px;
}

.section-head {
  max-width: 780px;
  margin-bottom: 26px;
}

.cards {
  display: grid;
  gap: 16px;
}

.cards.three {
  grid-template-columns: repeat(3, 1fr);
}

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

.card,
.interaction-grid article,
.acceptance,
.mvp-grid > div {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcf8;
  padding: 20px;
}

.architecture {
  margin-top: 22px;
  display: grid;
  gap: 10px;
}

.layer {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  background: white;
}

.layer.external {
  border-color: #e2c886;
  background: #fff8e8;
}

.mock-app {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr) 250px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  min-height: 420px;
  background: #edf2ea;
}

.mock-sidebar {
  background: #16231d;
  color: white;
  padding: 18px;
  display: grid;
  align-content: start;
  gap: 10px;
}

.mock-sidebar span {
  color: #cdd8d0;
  border-radius: 8px;
  padding: 9px 10px;
  font-size: 13px;
}

.mock-sidebar .active {
  background: #d8f2e5;
  color: #143823;
  font-weight: 800;
}

.mock-content {
  padding: 20px;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

.toolbar strong {
  display: block;
  font-size: 20px;
}

.candidate-table {
  display: grid;
  gap: 8px;
}

.table-row {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) 70px 120px 110px;
  gap: 12px;
  align-items: center;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  font-size: 14px;
}

.table-row.head {
  background: transparent;
  color: var(--muted);
  border: 0;
  font-weight: 700;
}

.mock-detail {
  border-left: 1px solid var(--line);
  background: white;
  padding: 20px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--green-2);
  color: #174c33;
  font-size: 12px;
  font-weight: 800;
}

.interaction-grid,
.mvp-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.flow div {
  background: #eef7f1;
  border: 1px solid #c8dfd0;
  border-radius: 8px;
  padding: 16px;
  min-height: 110px;
}

.flow strong,
.flow span {
  display: block;
}

.flow span {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.55;
}

.connector-table {
  display: grid;
  gap: 8px;
}

.connector-row {
  display: grid;
  grid-template-columns: 160px 190px minmax(0, 1fr) 88px;
  gap: 14px;
  align-items: center;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
}

.connector-row.head {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-weight: 800;
}

.connector-row strong {
  color: var(--blue);
}

ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.8;
}

.acceptance {
  margin-top: 16px;
  background: #fff8e8;
}

@media (max-width: 1000px) {
  #app {
    grid-template-columns: 1fr;
  }

  .rail {
    position: relative;
    height: auto;
  }

  nav {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 34px;
  }

  .cards.three,
  .cards.two,
  .interaction-grid,
  .mvp-grid,
  .flow {
    grid-template-columns: 1fr;
  }

  .mock-app {
    grid-template-columns: 1fr;
  }

  .mock-detail {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 640px) {
  main {
    padding: 14px;
  }

  .section,
  .hero {
    padding: 24px;
  }

  nav {
    grid-template-columns: 1fr;
  }

  .layer,
  .toolbar {
    display: grid;
  }

  .table-row,
  .connector-row {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 38px;
  }
}