:root {
  --ink: #171611;
  --muted: #5b5b52;
  --paper: #f8f7f1;
  --panel: #fffef8;
  --line: #d8d2c2;
  --charcoal: #232018;
  --ember: #d94a32;
  --moss: #4e6f49;
  --signal: #0e9a90;
  --gold: #e0b84b;
  --shadow: 0 18px 44px rgba(30, 26, 16, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(23, 22, 17, 0.05) 1px, transparent 1px) 0 0 / 36px 36px,
    linear-gradient(rgba(23, 22, 17, 0.04) 1px, transparent 1px) 0 0 / 36px 36px,
    var(--paper);
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", "Liberation Mono", Menlo, monospace;
  letter-spacing: 0;
}

a {
  color: inherit;
}

button,
select,
input {
  font: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 52px);
  background: rgba(248, 247, 241, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  color: #fffef8;
  background: var(--charcoal);
  border: 2px solid var(--ember);
  box-shadow: 4px 4px 0 var(--gold);
}

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

.nav a {
  padding: 8px 10px;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--ink);
  border-color: var(--ember);
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(340px, 1fr);
  grid-template-areas:
    "copy tool"
    "copy result"
    "board board";
  gap: 18px;
  align-items: start;
  padding: clamp(28px, 6vw, 70px) 0 30px;
}

.hero-copy {
  grid-area: copy;
  align-self: center;
  min-width: 0;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--ember);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 11ch;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.2rem, 9vw, 7.4rem);
  line-height: 0.86;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.8rem, 4vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.lede {
  max-width: 62ch;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.trust-strip span {
  padding: 8px 10px;
  color: var(--charcoal);
  background: #fff4cf;
  border: 1px solid #d6bd68;
}

.tool-panel,
.result-panel,
.voxel-board,
.fix-card,
.guide-block,
.link-list a,
details,
.table-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.tool-panel {
  grid-area: tool;
  display: grid;
  gap: 18px;
  padding: 20px;
}

.field-group label,
.field-grid label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
  text-transform: uppercase;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 5px;
  background: #ece6d6;
  border: 1px solid var(--line);
}

.segment {
  min-height: 44px;
  color: var(--muted);
  cursor: pointer;
  background: transparent;
  border: 0;
}

.segment.active {
  color: #fffef8;
  background: var(--charcoal);
  box-shadow: inset 0 -3px 0 var(--ember);
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

select {
  width: 100%;
  min-height: 48px;
  padding: 0 12px;
  color: var(--ink);
  background: #fffef8;
  border: 1px solid var(--line);
}

.switch-grid {
  display: grid;
  gap: 10px;
}

.switch-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  color: var(--muted);
}

.switch-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--ember);
}

.result-panel {
  grid-area: result;
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 22px;
  color: #fffef8;
  background:
    radial-gradient(circle at 88% 18%, rgba(14, 154, 144, 0.28), transparent 26%),
    linear-gradient(145deg, #242019, #161410);
  border-color: #383124;
}

.result-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 7px 9px;
  color: #fff0c8;
  border: 1px solid rgba(224, 184, 75, 0.5);
}

.status-dot {
  width: 9px;
  height: 9px;
  background: var(--gold);
  box-shadow: 0 0 18px var(--gold);
}

.result-panel h2 {
  font-size: clamp(1.55rem, 3vw, 2.7rem);
}

.result-panel p {
  margin: 0;
  color: #d8d0bc;
  line-height: 1.6;
}

.steps {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 22px;
  color: #f4e7c4;
  line-height: 1.55;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.primary-link,
.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 14px;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
}

.primary-link {
  color: #171611;
  background: var(--gold);
}

.copy-button {
  color: #fffef8;
  background: transparent;
  border-color: rgba(255, 254, 248, 0.36);
}

.voxel-board {
  position: relative;
  grid-area: board;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
  min-height: 146px;
  padding: 18px;
  overflow: hidden;
  background: #1e1b15;
  border-color: #342e22;
}

.scan-line {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(14, 154, 144, 0.18) 50%, transparent 100%);
  animation: scan 3.4s linear infinite;
}

.voxel-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(15, minmax(16px, 1fr));
  gap: 7px;
}

.voxel-grid span {
  display: block;
  aspect-ratio: 1;
  background: #3e382b;
  border: 1px solid #5b4a2d;
}

.voxel-grid span:nth-child(3n) {
  background: var(--moss);
}

.voxel-grid span:nth-child(5n) {
  background: var(--ember);
}

.voxel-grid span:nth-child(7n) {
  background: var(--signal);
}

.board-readout {
  position: relative;
  display: grid;
  gap: 6px;
  min-width: 160px;
  color: #fffef8;
  text-align: right;
}

.board-readout strong {
  color: var(--gold);
  text-transform: uppercase;
}

.board-readout span {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.1rem;
}

.band,
.guide-section,
.deep-guide,
.split-section,
.intent-table,
.faq {
  padding: clamp(36px, 7vw, 82px) 0;
}

.section-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 14px;
}

.guide-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.guide-block {
  display: grid;
  align-content: start;
  gap: 14px;
  min-width: 0;
  padding: 20px;
  box-shadow: none;
}

.guide-block h2 {
  font-size: clamp(1.45rem, 2.6vw, 2.3rem);
}

.guide-block p {
  margin: 0;
  color: var(--muted);
  line-height: 1.68;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.62;
}

.check-list strong {
  color: var(--ink);
}

.fix-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.fix-card {
  min-height: 190px;
  padding: 18px;
  border-top: 5px solid var(--ember);
}

.fix-card:nth-child(2) {
  border-top-color: var(--signal);
}

.fix-card:nth-child(3) {
  border-top-color: var(--gold);
}

.fix-card:nth-child(4) {
  border-top-color: var(--moss);
}

.fix-card p,
.split-section p,
details p,
.footer p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.split-section {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 26px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.split-section p {
  margin-top: 18px;
}

.link-list {
  display: grid;
  gap: 10px;
  padding: 12px;
}

.link-list a {
  display: grid;
  gap: 6px;
  padding: 16px;
  text-decoration: none;
  box-shadow: none;
}

.link-list a:hover,
.link-list a:focus-visible {
  border-color: var(--ember);
}

.link-list span {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
}

.table-wrap {
  overflow-x: auto;
  box-shadow: none;
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: var(--panel);
}

th,
td {
  padding: 15px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

th {
  color: #fffef8;
  background: var(--charcoal);
}

td {
  color: var(--muted);
}

td:first-child {
  color: var(--ink);
  font-weight: 800;
}

.faq {
  display: grid;
  gap: 10px;
}

details {
  padding: 18px;
  box-shadow: none;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

details p {
  margin-top: 12px;
}

.footer {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 26px 0 42px;
  border-top: 1px solid var(--line);
}

@keyframes scan {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(100%);
  }
}

@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
    grid-template-areas:
      "copy"
      "tool"
      "result"
      "board";
  }

  .split-section {
    grid-template-columns: 1fr;
  }

  .guide-grid,
  .guide-grid.three {
    grid-template-columns: 1fr;
  }

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

  .nav {
    justify-content: flex-end;
  }
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .field-grid,
  .fix-grid,
  .voxel-board {
    grid-template-columns: 1fr;
  }

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

  .voxel-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .board-readout {
    text-align: left;
  }

  h1 {
    max-width: 9ch;
  }
}