:root {
  --ink: #1f2a20;
  --muted: #68755f;
  --paper: #f4ecd8;
  --surface: #fff9e8;
  --moss: #3f6f32;
  --moss-dark: #25451f;
  --dirt: #7d5732;
  --gold: #d7a646;
  --water: #72b7c9;
  --line: rgba(31, 42, 32, 0.16);
  --shadow: 0 22px 50px rgba(40, 54, 33, 0.16);
  --radius: 10px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(31, 42, 32, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(31, 42, 32, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 8% 10%, rgba(114, 183, 201, 0.32), transparent 30%),
    radial-gradient(circle at 92% 4%, rgba(215, 166, 70, 0.28), transparent 26%),
    linear-gradient(135deg, #ecdfbd, #fbf6e4 44%, #d9e8c6);
  background-size: 28px 28px, 28px 28px, auto, auto, auto;
  font-family: "Trebuchet MS", "Lucida Sans Unicode", sans-serif;
  line-height: 1.5;
}

a {
  color: var(--moss-dark);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(244, 236, 216, 0.82);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav {
  align-items: center;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--max);
  padding: 15px 22px;
}

.brand {
  align-items: center;
  color: var(--ink);
  display: inline-flex;
  gap: 10px;
  font-weight: 900;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  background: linear-gradient(135deg, var(--moss), var(--dirt));
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(31, 42, 32, 0.18);
  color: #fff;
  display: inline-flex;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.nav-links {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

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

.page-shell {
  margin: 0 auto;
  max-width: var(--max);
  padding: 30px 22px 56px;
}

.hero {
  align-items: end;
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 360px);
  margin: 24px 0 24px;
}

.eyebrow {
  color: var(--dirt);
  font-size: 0.84rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 5.2rem);
  letter-spacing: -0.06em;
  line-height: 0.9;
  margin: 0 0 18px;
  max-width: 850px;
  text-wrap: balance;
}

.hero p {
  color: var(--muted);
  font-size: 1.08rem;
  margin: 0;
  max-width: 720px;
}

.hero-actions,
.actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.btn {
  align-items: center;
  border: 2px solid var(--ink);
  border-radius: 0;
  box-shadow: 4px 4px 0 rgba(31, 42, 32, 0.18);
  display: inline-flex;
  font-weight: 900;
  justify-content: center;
  min-height: 44px;
  padding: 10px 15px;
  text-decoration: none;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.btn:hover {
  box-shadow: 2px 2px 0 rgba(31, 42, 32, 0.18);
  transform: translate(2px, 2px);
}

.btn-primary {
  background: var(--moss);
  color: #fff;
}

.btn-secondary {
  background: var(--gold);
  color: var(--ink);
}

.btn-ghost {
  background: var(--surface);
  color: var(--ink);
}

.hero-card,
.panel,
.content-page {
  background: rgba(255, 249, 232, 0.9);
  border: 2px solid rgba(31, 42, 32, 0.18);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 20px;
}

.hero-card strong {
  display: block;
  font-size: 1.15rem;
  margin: 14px 0 8px;
}

.mini-grid {
  display: grid;
  gap: 3px;
  grid-template-columns: repeat(5, 22px);
}

.mini-grid i,
.mini-grid b {
  border: 1px solid rgba(31, 42, 32, 0.28);
  display: block;
  height: 22px;
  width: 22px;
}

.mini-grid i {
  background: rgba(114, 183, 201, 0.14);
}

.mini-grid b {
  background: var(--moss);
}

.tool-grid {
  align-items: start;
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(300px, 390px) minmax(0, 1fr);
}

.controls {
  padding: 18px;
}

.panel-heading,
.preview-topbar {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

.panel-heading {
  border-bottom: 2px solid var(--line);
  font-weight: 900;
  margin: -2px -2px 18px;
  padding: 14px 16px;
}

.panel-heading small {
  background: var(--ink);
  color: #fff;
  padding: 4px 8px;
}

.control {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.control-row {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

label {
  font-weight: 900;
}

output,
.status,
.preview-topbar span,
.control small {
  color: var(--muted);
  font-size: 0.92rem;
}

input[type="range"] {
  accent-color: var(--moss);
  width: 100%;
}

select,
textarea {
  background: #fffdf4;
  border: 2px solid rgba(31, 42, 32, 0.18);
  color: var(--ink);
  padding: 10px 11px;
  width: 100%;
}

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

.toggle-row {
  align-items: center;
  background: rgba(63, 111, 50, 0.08);
  border: 2px dashed rgba(63, 111, 50, 0.24);
  display: flex;
  gap: 9px;
  min-height: 44px;
  padding: 9px 10px;
}

.quick-buttons {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 2px;
}

.quick-buttons button {
  background: #fffdf4;
  border: 2px solid rgba(31, 42, 32, 0.2);
  color: var(--ink);
  font-weight: 900;
  min-height: 38px;
}

.status {
  margin: 12px 0 0;
}

.preview-panel {
  overflow: hidden;
}

.preview-topbar {
  border-bottom: 2px solid var(--line);
  padding: 15px 16px;
}

.preview-topbar strong {
  display: block;
  font-size: 1.05rem;
}

.material-badge {
  border: 2px solid rgba(31, 42, 32, 0.22);
  color: #fff;
  font-weight: 900;
  padding: 6px 10px;
}

.grid-stage {
  background:
    linear-gradient(45deg, rgba(31, 42, 32, 0.05) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(31, 42, 32, 0.05) 25%, transparent 25%),
    #efe3c4;
  background-size: 18px 18px;
  overflow: auto;
  padding: 18px;
  width: 100%;
}

.circle-grid {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(var(--columns), var(--cell));
  width: max-content;
}

.tile {
  background: rgba(255, 253, 244, 0.76);
  border: 1px solid rgba(31, 42, 32, 0.08);
  height: var(--cell);
  width: var(--cell);
}

.tile.is-block {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.16), transparent 45%),
    var(--block);
  border-color: var(--block-dark);
  box-shadow: inset -2px -2px 0 rgba(0, 0, 0, 0.16);
}

.circle-grid.show-axes .axis-x:not(.is-block),
.circle-grid.show-axes .axis-y:not(.is-block) {
  background: rgba(215, 166, 70, 0.26);
}

.circle-grid.show-axes .axis-x.is-block,
.circle-grid.show-axes .axis-y.is-block {
  outline: 2px solid rgba(215, 166, 70, 0.74);
  outline-offset: -2px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stats-grid div {
  border-right: 2px solid var(--line);
  border-top: 2px solid var(--line);
  padding: 13px 14px;
}

.stats-grid div:last-child {
  border-right: 0;
}

.stats-grid span {
  color: var(--muted);
  display: block;
  font-size: 0.84rem;
  font-weight: 800;
}

.stats-grid strong {
  display: block;
  font-size: 1.45rem;
  line-height: 1.1;
  margin-top: 3px;
}

.blueprint-output {
  border: 0;
  border-top: 2px solid var(--line);
  display: block;
  font-family: "Consolas", "Courier New", monospace;
  font-size: 0.82rem;
  min-height: 170px;
  resize: vertical;
}

.seo-section,
.content-page {
  margin-top: 24px;
  padding: 26px;
}

.seo-section h2,
.content-page h1 {
  font-size: clamp(1.65rem, 3vw, 2.7rem);
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0 0 14px;
}

.seo-section p,
.content-page p,
.content-page li {
  color: var(--muted);
}

.feature-grid,
.faq-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 18px;
}

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

.feature,
.faq-item {
  background: rgba(255, 249, 232, 0.72);
  border: 2px solid rgba(31, 42, 32, 0.12);
  padding: 17px;
}

.feature h3,
.faq-item h3 {
  margin: 0 0 8px;
}

.feature p,
.faq-item p {
  margin: 0;
}

.content-page {
  max-width: 820px;
}

.content-page h2 {
  margin-top: 28px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 22px 34px;
}

.footer-inner {
  align-items: center;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--max);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (max-width: 900px) {
  .hero,
  .tool-grid,
  .feature-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .hero-card {
    max-width: 420px;
  }
}

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

  .page-shell {
    padding-inline: 14px;
  }

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

  .stats-grid div {
    border-right: 0;
  }

  .hero-actions,
  .actions {
    align-items: stretch;
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}