styles.css

/* =========================================================
   Checkmate — site styles
   Palette: warm paper, deep ink, single anime-red accent.
   ========================================================= */

:root {
  --paper:      #f5f1e8;
  --paper-2:    #efe9dc;
  --ink:        #1a1714;
  --ink-soft:   #4a443c;
  --ink-mute:   #8a8275;
  --rule:       #d8d0c0;
  --rule-soft:  #e6dfd0;
  --accent:     #c8402d;   /* anime red */
  --accent-2:   #2b4a3f;   /* deep green */
  --ghost-r:    #d94a3a;
  --ghost-g:    #3f8b5f;
  --code-bg:    #211e1a;
  --code-fg:    #ece5d8;

  --radius:     10px;
  --radius-lg:  16px;
  --max:        1120px;

  --font-serif: "Fraunces", Georgia, serif;
  --font-sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono:  "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* subtle paper texture via repeating grid, echoing the X-sheet */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(26,23,20,.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(26,23,20,.025) 1px, transparent 1px);
  background-size: 32px 32px;
  z-index: 0;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin: 0;
  color: var(--ink);
}

h1 em, h2 em {
  font-style: italic;
  font-weight: 600;
  color: var(--accent);
}

p { margin: 0; }

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(26,23,20,.06);
  padding: 1px 6px;
  border-radius: 4px;
}

kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 2px 7px;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ============ NAV ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245,241,232,.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--rule-soft);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}
.brand-mark { display: inline-flex; color: var(--ink); }
.brand-name {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 26px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
}
.nav-links a {
  position: relative;
  padding: 4px 0;
  transition: color .15s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1.5px;
  background: var(--accent);
  transition: right .2s ease;
}
.nav-links a:hover::after { right: 0; }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}
.ghost-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
}
.ghost-link:hover { color: var(--accent); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 1.6px;
  background: var(--ink);
  margin: 4px 0;
  transition: transform .2s;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, color .15s ease;
  border: 1.5px solid transparent;
  white-space: nowrap;
}
.btn-dark {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn-dark:hover { background: #000; transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: var(--paper); }

.btn-lg { padding: 13px 24px; font-size: 15px; }

/* ============ HERO ============ */
.hero {
  position: relative;
  padding: 72px 0 0;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 60px;
  align-items: center;
  padding-bottom: 72px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 22px;
}
.eyebrow .dot {
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(200,64,45,.15);
}

.hero h1 {
  font-size: clamp(38px, 5.6vw, 68px);
  line-height: 1.02;
  font-weight: 800;
  margin-bottom: 22px;
}

.lede {
  font-size: 18px;
  color: var(--ink-soft);
  max-width: 520px;
  margin-bottom: 32px;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}
.cta-row.center { justify-content: center; }

.hero-badges {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--ink-mute);
}
.hero-badges li {
  padding: 5px 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: rgba(255,255,255,.4);
}
.hero-badges strong { color: var(--ink); font-weight: 600; }

/* Hero visual: window mock */
.hero-visual { position: relative; }

.window {
  background: #fbf8f1;
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  box-shadow:
    0 1px 0 rgba(255,255,255,.6) inset,
    0 20px 40px -20px rgba(26,23,20,.28),
    0 4px 12px -6px rgba(26,23,20,.14);
  overflow: hidden;
  transform: rotate(-.6deg);
  transition: transform .4s ease;
}
.hero-visual:hover .window { transform: rotate(0deg); }

.window-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule-soft);
  background: var(--paper-2);
}
.window-bar span {
  width: 10px; height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot-r { background: #e26c5b; }
.dot-y { background: #e6b04b; }
.dot-g { background: #6fb07a; }
.window-title {
  width: auto !important;
  height: auto !important;
  border-radius: 0 !important;
  background: none !important;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-mute);
}

.window-body {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  min-height: 300px;
}

.canvas-preview {
  position: relative;
  background: #fff;
  border-right: 1px solid var(--rule-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.ball-svg { width: 100%; height: auto; }

.ball { fill: var(--ink); }
.ghost-1 { fill: var(--ghost-r); opacity: .18; }
.ghost-2 { fill: var(--ghost-r); opacity: .30; }
.ghost-3 { fill: var(--ghost-r); opacity: .48; }
.ghost-4 { fill: var(--ghost-g); opacity: .35; }
.live { fill: var(--accent); }

.ball-frames .ball { animation: ballPulse 2.4s ease-in-out infinite; }
.ball-frames .ghost-1 { animation-delay: 0s; }
.ball-frames .ghost-2 { animation-delay: .12s; }
.ball-frames .ghost-3 { animation-delay: .24s; }
.ball-frames .ghost-4 { animation-delay: .36s; }
.ball-frames .live    { animation-delay: .48s; }

@keyframes ballPulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.06); }
}

.canvas-tag {
  position: absolute;
  bottom: 10px; left: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  padding: 2px 7px;
  border-radius: 4px;
}

.xshet-mini {
  background: var(--paper-2);
  padding: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-soft);
}
.xshet-head, .xshet-rows .row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 4px;
  padding: 3px 4px;
}
.xshet-head {
  color: var(--ink-mute);
  border-bottom: 1px solid var(--rule);
  margin-bottom: 4px;
  font-weight: 500;
}
.xshet-rows .row span { color: var(--ink-soft); }
.xshet-rows .row.on span { color: var(--accent); font-weight: 600; }
.xshet-rows .row .hold { color: var(--ink-mute); }

.hero-rule {
  height: 1px;
  background: var(--rule);
  max-width: var(--max);
  margin: 0 auto;
}

/* ============ SECTIONS ============ */
.section { padding: 92px 0; position: relative; z-index: 1; }
.section-alt {
  background: var(--paper-2);
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
}

.section-head {
  max-width: 720px;
  margin-bottom: 52px;
}
.kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800;
  margin-bottom: 14px;
}
.section-sub {
  font-size: 17px;
  color: var(--ink-soft);
}

/* ============ WHY / COMPARE ============ */
.compare {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 56px;
}
.compare-card {
  padding: 22px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: rgba(255,255,255,.4);
}
.compare-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
  font-weight: 600;
}
.compare-tag {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}
.compare-card.highlight {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -22px rgba(26,23,20,.4);
}
.compare-card.highlight h3 { color: var(--paper); }
.compare-card.highlight .compare-tag { color: rgba(245,241,232,.75); }

.pullquote {
  margin: 0;
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.pullquote p {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 34px);
  font-style: italic;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.3;
}

/* ============ FEATURES ============ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--rule-soft);
  border: 1px solid var(--rule-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.feature {
  background: var(--paper-2);
  padding: 30px 26px;
  transition: background .2s ease;
}
.section-alt .feature { background: var(--paper); }
.feature:hover { background: var(--paper-2); }
.section-alt .feature:hover { background: #fff; }

.feature-icon {
  width: 40px; height: 40px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 18px;
  background: rgba(255,255,255,.5);
}
.feature-icon svg { width: 22px; height: 22px; }

.feature h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature p {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* ============ X-SHEET SECTION ============ */
.xshet-section { padding: 100px 0; }

.xshet-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.xshet-copy h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 800;
  margin: 12px 0 20px;
}
.xshet-copy p {
  font-size: 16.5px;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.tick-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.tick-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: var(--ink-soft);
}
.tick-list .num,
.tick-list .ln,
.tick-list .tk {
  font-family: var(--font-mono);
  font-size: 13px;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-2);
  color: var(--accent);
  font-weight: 600;
  flex-shrink: 0;
}

.xshet-panel {
  background: #fbf8f1;
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px -24px rgba(26,23,20,.28);
  overflow: hidden;
}

.panel-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule-soft);
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  font-weight: 500;
}
.panel-hint {
  color: var(--ink-mute);
  font-weight: 400;
  font-size: 11px;
}

.xshet-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 12px;
}
.xshet-table th,
.xshet-table td {
  padding: 0;
  text-align: center;
  border-bottom: 1px solid var(--rule-soft);
  height: 22px;
}
.xshet-table th {
  color: var(--ink-mute);
  font-weight: 500;
  padding: 8px 0;
  background: var(--paper-2);
  border-bottom: 1px solid var(--rule);
}
.xshet-table th:first-child,
.xshet-table td:first-child {
  text-align: right;
  padding-right: 12px;
  color: var(--ink-mute);
  border-right: 1px solid var(--rule-soft);
  width: 60px;
}
.xshet-table td.cell {
  cursor: pointer;
  position: relative;
  color: var(--ink-soft);
  transition: background .12s;
}
.xshet-table td.cell:hover { background: rgba(200,64,45,.06); }
.xshet-table td.cell.start { color: var(--ink); font-weight: 600; }
.xshet-table td.cell.held  { color: var(--ink-mute); }
.xshet-table td.cell.end   { color: var(--accent); font-weight: 600; }
.xshet-table tr.active td { background: rgba(200,64,45,.08); }
.xshet-table tr.active td:first-child { color: var(--accent); font-weight: 600; }

.panel-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--rule-soft);
  background: var(--paper-2);
  font-size: 12px;
}
.chip {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border: 1px solid var(--rule);
  border-radius: 5px;
  background: var(--paper);
  color: var(--ink-soft);
  cursor: pointer;
  transition: all .15s ease;
}
.chip:hover { border-color: var(--ink-soft); color: var(--ink); }
.chip.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.panel-foot-note {
  margin-left: auto;
  color: var(--ink-mute);
  font-family: var(--font-mono);
  font-size: 11px;
}
.panel-foot-note strong { color: var(--ink); }

/* ============ QUICK START ============ */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
  display: grid;
  gap: 4px;
}
.steps li {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 15.5px;
  color: var(--ink-soft);
  align-items: baseline;
}
.steps li:last-child { border-bottom: none; }
.steps em { color: var(--accent); font-style: italic; }
.step-n {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 20px;
  color: var(--accent);
  min-width: 28px;
  line-height: 1;
}
.steps kbd { margin: 0 3px; }
.steps strong { color: var(--ink); }

.install-card {
  background: #fbf8f1;
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 20px 40px -28px rgba(26,23,20,.28);
}
.install-head { margin-bottom: 16px; }
.kicker-inline {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
}

.code-block {
  background: var(--code-bg);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
}
.code-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.code-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: rgba(236,229,216,.5);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.copy-btn {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: rgba(236,229,216,.7);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  padding: 3px 9px;
  border-radius: 4px;
  cursor: pointer;
  transition: all .15s;
}
.copy-btn:hover { color: var(--code-fg); background: rgba(255,255,255,.1); }
.copy-btn.copied { color: #8fd8a5; border-color: rgba(143,216,165,.3); }

.code-block pre {
  margin: 0;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--code-fg);
  overflow-x: auto;
}
.code-block code { background: none; padding: 0; color: inherit; font-size: inherit; }
.c-prompt { color: var(--accent); user-select: none; }

.install-note {
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.55;
  margin-bottom: 16px;
}
.install-note strong { color: var(--ink); }

.install-alt {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 11.5px;
}
.alt-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-right: 4px;
}
.install-alt code {
  font-size: 11px;
  background: var(--paper-2);
  border: 1px solid var(--rule-soft);
  padding: 3px 8px;
  color: var(--ink-soft);
}

/* ============ SHORTCUTS ============ */
.shortcut-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 32px;
}
.shortcut-group h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
}
.sc-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 0;
  font-size: 13.5px;
  color: var(--ink-soft);
  flex-wrap: wrap;
}
.sc-row span { flex: 1 1 100%; margin-bottom: 4px; }
.sc-row kbd { font-size: 10.5px; }

.undo-note {
  text-align: center;
  font-size: 14px;
  color: var(--ink-mute);
  font-style: italic;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}

/* ============ BUILT ============ */
.built-grid {
  grid-template-columns: 1fr 1.1fr;
  margin-bottom: 48px;
}

.tree-card {
  background: var(--code-bg);
  border-radius: var(--radius-lg);
  padding: 24px;
  overflow-x: auto;
  box-shadow: 0 20px 40px -28px rgba(26,23,20,.4);
}
.tree {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--code-fg);
  white-space: pre;
}
.tree-c { color: rgba(236,229,216,.45); }

.decision-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}
.decision-list li { padding-left: 20px; position: relative; }
.decision-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}
.decision-list h4 {
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-sans);
  letter-spacing: -.005em;
  margin-bottom: 4px;
}
.decision-list p {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--rule);
}
.stack-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-right: 10px;
}
.pill {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 5px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink-soft);
}

/* ============ LIMITS ============ */
.limits {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 40px;
}
.limits li {
  padding: 18px 0 18px 28px;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 15px;
  color: var(--ink-soft);
  position: relative;
  line-height: 1.55;
}
.limits li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ============ ROADMAP ============ */
.roadmap {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.roadmap li {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 15px;
  color: var(--ink-soft);
  transition: background .15s;
}
.roadmap li:hover { background: rgba(255,255,255,.5); }
.rm-status {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  min-width: 66px;
  color: var(--ink-mute);
}
.roadmap li.done { color: var(--ink-mute); }
.roadmap li.done .rm-status { color: var(--accent-2); }
.roadmap li.done::after { content: "✓"; color: var(--accent-2); margin-left: auto; font-weight: 700; }
.roadmap li.next { color: var(--ink); font-weight: 500; }
.roadmap li.next .rm-status { color: var(--accent); }
.roadmap li.next::after { content: "→"; color: var(--accent); margin-left: auto; font-weight: 700; }

/* ============ CONTRIBUTE ============ */
.contrib-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.contrib {
  padding: 24px 22px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: rgba(255,255,255,.4);
  transition: all .2s ease;
}
.contrib:hover {
  border-color: var(--ink);
  transform: translateY(-3px);
  box-shadow: 0 16px 30px -20px rgba(26,23,20,.3);
}
.contrib h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.contrib p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.55;
}
.contrib code { font-size: 12.5px; }

.contrib-note {
  font-size: 14px;
  color: var(--ink-mute);
  text-align: center;
}

/* ============ CTA ============ */
.cta-section {
  padding: 100px 0;
  background: var(--ink);
  color: var(--paper);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(245,241,232,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(245,241,232,.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.cta-inner {
  text-align: center;
  position: relative;
}
.cta-section h2 {
  font-size: clamp(30px, 4.4vw, 54px);
  font-weight: 800;
  color: var(--paper);
  margin-bottom: 32px;
  font-style: italic;
}
.cta-section .btn-dark {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.cta-section .btn-dark:hover { background: #fff; }
.cta-section .btn-outline {
  color: var(--paper);
  border-color: rgba(245,241,232,.4);
}
.cta-section .btn-outline:hover {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.license {
  margin-top: 36px;
  font-size: 13px;
  color: rgba(245,241,232,.5);
  font-family: var(--font-mono);
}

/* ============ FOOTER ============ */
.footer {
  background: var(--ink);
  color: rgba(245,241,232,.6);
  padding: 56px 0 40px;
  border-top: 1px solid rgba(245,241,232,.08);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: 40px;
  align-items: start;
}
.footer-brand {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--paper);
}
.footer-brand .brand-mark { color: var(--paper); margin-top: 2px; }
.footer-brand strong {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 18px;
  display: block;
  letter-spacing: -.02em;
}
.footer-brand p {
  font-size: 13px;
  color: rgba(245,241,232,.5);
  margin-top: 4px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
}
.footer-links a { color: rgba(245,241,232,.7); transition: color .15s; }
.footer-links a:hover { color: var(--paper); }

.footer-thanks {
  font-size: 13px;
  line-height: 1.65;
  color: rgba(245,241,232,.5);
  max-width: 400px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 960px) {
  .hero-grid,
  .xshet-grid,
  .two-col,
  .built-grid { grid-template-columns: 1fr; gap: 44px; }

  .compare,
  .feature-grid,
  .shortcut-grid,
  .contrib-grid { grid-template-columns: repeat(2, 1fr); }

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

  .footer-inner { grid-template-columns: 1fr 1fr; }

  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0; right: 0;
    background: var(--paper);
    padding: 20px 28px;
    border-bottom: 1px solid var(--rule);
    gap: 16px;
  }
  .menu-toggle { display: block; }
}

@media (max-width: 600px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .compare,
  .feature-grid,
  .shortcut-grid,
  .contrib-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .window-body { grid-template-columns: 1fr; }
  .canvas-preview { border-right: none; border-bottom: 1px solid var(--rule-soft); }
  .ghost-link { display: none; }
}

/* ============ MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  html { scroll-behavior: auto; }
}