/* ten_cubed landing — design tokens from design.pen */
:root {
  --surface: #FFFFFF;
  --surface-alt: #F5F5F5;
  --ink: #000000;
  --ink-2: #333333;
  --ink-muted: #666666;
  --accent: #00FF00;
  --border-subtle: #CCCCCC;
  --font-head: "Geist", system-ui, sans-serif;
  --font-body: "Geist", system-ui, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --pad-x: 120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
mark {
  background: var(--accent);
  color: var(--ink);
  padding: 0 0.18em 0.04em;
}

.icon { width: 26px; height: 26px; flex: none; }
.icon-sm { width: 22px; height: 22px; }
.icon-xs { width: 12px; height: 12px; }

/* ============ NAV ============ */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px var(--pad-x);
  border-bottom: 1px solid var(--ink);
  position: relative;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 14px; height: 14px;
  background: var(--accent);
  border: 1px solid var(--ink);
  display: inline-block;
}
.logo-mark-sm { width: 10px; height: 10px; }
.wordmark { font-family: var(--font-mono); font-size: 18px; font-weight: 700; }
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.5px;
  color: var(--ink-2);
}
.nav-links a:hover { color: var(--ink); box-shadow: 0 2px 0 var(--accent); }
.nav-toggle, .menu-btn { display: none; }
.menu-btn { cursor: pointer; }
.menu-btn svg { width: 22px; height: 22px; display: block; }

/* ============ HERO ============ */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  padding: 96px var(--pad-x) 72px;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--ink);
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border: 1px solid var(--ink);
  flex: none;
}
.headline {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: clamp(32px, 6.2vw, 76px);
  font-weight: 700;
  letter-spacing: -0.026em;
  line-height: 1.05;
}
.headline mark { padding: 0 0.2em 0.06em; }
.hero-sub {
  max-width: 640px;
  color: var(--ink-2);
  font-size: 18px;
  line-height: 1.6;
}
.hero-ctas { display: flex; gap: 16px; align-items: center; }
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 16px 32px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.5px;
  transition: transform 0.1s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: var(--accent); font-weight: 700; }
.btn-primary:hover { background: var(--ink-2); }
.btn-secondary { border: 1px solid var(--ink); color: var(--ink); }
.btn-secondary:hover { background: var(--surface-alt); }
.trust-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--ink-muted);
}
.trust-group { display: inline-flex; gap: 14px; align-items: center; white-space: nowrap; }
.sep { color: var(--border-subtle); letter-spacing: 0; }

/* ============ DIAGRAM ============ */
.diagram-section { padding: 24px var(--pad-x) 80px; }
.network-diagram {
  border: 1px solid var(--ink);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.diagram-header {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--ink-muted);
}
.diagram-row { display: flex; align-items: center; gap: 16px; }
.panel {
  flex: 1 1 0;
  min-width: 0;
  border: 1px solid var(--ink);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}
.panel-cap {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--ink-muted);
}
.panel-num { font-family: var(--font-mono); font-size: 36px; font-weight: 700; line-height: 1; }
.panel-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.5px;
  color: var(--ink-2);
}
.connector {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: none;
  color: var(--ink);
}
.connector i { width: 8px; height: 1px; background: var(--ink); }
.connector .arrow { font-size: 12px; line-height: 1; }
.you-node {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 1.5px solid var(--ink);
  display: block;
}
.dots-d1 {
  display: grid;
  grid-template-columns: repeat(5, 12px);
  gap: 4px;
}
.dots-d1 i {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--ink);
}
.dots-d2, .dots-d3 {
  display: grid;
  grid-template-columns: repeat(10, 6px);
  gap: 3px;
}
.dots-d2 i, .dots-d3 i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ink);
}
.dots-d3 i {
  background: #FFFFFF;
  border: 1px solid var(--ink);
  width: 6px; height: 6px;
  box-sizing: border-box;
}
.d3-note {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-muted);
}
.diagram-sum {
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
}

/* ============ STATS STRIP ============ */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.stat {
  padding: 40px 48px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.stat + .stat { border-left: 1px solid var(--ink); }
.stat-num { font-family: var(--font-mono); font-size: 52px; font-weight: 700; line-height: 1; }
.stat-label { font-family: var(--font-mono); font-size: 12px; letter-spacing: 1px; }
.stat-desc { color: var(--ink-muted); font-size: 14px; line-height: 1.5; }

/* ============ SECTIONS (shared) ============ */
.section {
  display: flex;
  flex-direction: column;
  gap: 56px;
  padding: 88px var(--pad-x);
  align-items: center;
}
.section-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}
.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--ink-muted);
}
.kicker-accent { color: var(--accent); }
.section-head h2 {
  font-family: var(--font-head);
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.023em;
  line-height: 1.2;
}

/* ============ HOW IT WORKS / BENEFITS cards ============ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  width: 100%;
}
.rule-card, .benefit-card {
  border: 1px solid var(--border-subtle);
  padding: 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}
.rule-top {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.rule-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--ink-muted);
}
.rule-card h3, .benefit-card h3 {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.rule-card p, .benefit-card p {
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.6;
}
.benefits { border-top: 1px solid var(--ink); }
.benefit-card { background: var(--surface-alt); }
.icon-chip {
  display: inline-flex;
  padding: 10px;
  background: var(--accent);
  border: 1px solid var(--ink);
}

/* ============ TRADE-OFFS ============ */
.tradeoffs-panel {
  width: 100%;
  border: 1px solid var(--ink);
}
.trade-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 16px 28px;
  border-bottom: 1px solid var(--ink);
  font-family: var(--font-mono);
}
.trade-kicker { font-size: 12px; font-weight: 700; letter-spacing: 2px; }
.trade-note { font-size: 11px; letter-spacing: 1px; color: var(--ink-muted); }
.trade-row { display: grid; grid-template-columns: 1fr 1fr; }
.trade-cell {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.trade-cell + .trade-cell { border-left: 1px solid var(--ink); }
.trade-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--ink-muted);
}
.trade-cell h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.trade-cell p { color: var(--ink-2); font-size: 15px; line-height: 1.6; }

/* ============ CODE SECTION ============ */
.code-section {
  background: var(--ink);
  display: flex;
  align-items: center;
  gap: 64px;
  padding: 88px var(--pad-x);
}
.code-copy {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.code-copy h2 {
  color: #FFFFFF;
  font-family: var(--font-head);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
}
.code-copy > p { color: #B3B3B3; font-size: 16px; line-height: 1.6; }
.code-points { display: flex; flex-direction: column; gap: 12px; }
.code-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #E5E5E5;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.5px;
}
.point-mark { width: 8px; height: 8px; background: var(--accent); flex: none; }
.code-window {
  width: 620px;
  max-width: 100%;
  flex: none;
  background: #0A0A0A;
  border: 1px solid #333333;
}
.code-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-bottom: 1px solid #333333;
  font-family: var(--font-mono);
}
.file-name { color: var(--accent); font-size: 12px; }
.file-meta { color: #666666; font-size: 11px; }
.code-body {
  display: flex;
  gap: 16px;
  padding: 20px;
  overflow-x: auto;
}
.code-body pre {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
}
.line-numbers { color: #444444; text-align: right; user-select: none; }
.sql-code { color: #D6FFD6; }
.sql-code code { font-family: inherit; }

/* ============ SHOWCASE ============ */
.showcase { background: var(--surface-alt); }
.showcase-card {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 56px;
  padding: 40px;
}
.browser-mockup {
  width: 560px;
  max-width: 100%;
  flex: none;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}
.browser-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: #EDEDED;
  border-bottom: 1px solid var(--border-subtle);
}
.browser-dots { display: flex; gap: 6px; }
.browser-dots i {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #D6D6D6;
}
.url-pill {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  background: #FFFFFF;
  border-radius: 4px;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #666666;
}
.url-pill .icon-xs { width: 10px; height: 10px; color: #999999; }
.bc-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: #FFFFFF;
}
.bc-logo { color: #3E5641; font-family: Georgia, "Times New Roman", serif; font-size: 15px; font-weight: 700; }
.bc-nav-right { display: flex; align-items: center; gap: 14px; }
.bc-signin { color: #6B6B60; font-size: 10px; }
.bc-join {
  background: #7A9367;
  color: #FFFFFF;
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 10px;
  font-weight: 700;
}
.bc-hero {
  background: #F1EEE5;
  padding: 32px 40px 36px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.bc-head {
  color: #2E3A2F;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.25;
}
.bc-sub { color: #6B6B60; font-size: 11px; line-height: 1.55; max-width: 380px; }
.bc-cta {
  background: #7A9367;
  color: #FFFFFF;
  border-radius: 22px;
  padding: 9px 18px;
  font-size: 11px;
  font-weight: 700;
}
.bc-shelf {
  background: #F1EEE5;
  padding: 0 40px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.shelf-row { display: flex; gap: 10px; }
.cover {
  width: 58px; height: 84px;
  background: var(--c);
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}
.cover::after { content: ""; display: block; height: 26px; background: var(--b); }
.case-copy {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 22px;
}
.case-copy h3 {
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.15;
}
.case-copy > p { color: var(--ink-2); font-size: 15px; line-height: 1.6; }
.case-points { display: flex; flex-direction: column; gap: 12px; width: 100%; }
.case-points li {
  display: flex;
  gap: 12px;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.4;
}
.point-sq { width: 8px; height: 8px; background: var(--accent); flex: none; margin-top: 5px; }
.case-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
}
.case-link:hover { box-shadow: 0 2px 0 var(--accent); }
.case-link .icon-xs { width: 14px; height: 14px; }

/* ============ CLOSING ============ */
.closing {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding: 104px var(--pad-x);
  text-align: center;
}
.close-head {
  font-family: var(--font-head);
  font-size: clamp(36px, 4.6vw, 60px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
}
.close-sub {
  max-width: 560px;
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.6;
}
.close-ctas { display: flex; gap: 16px; }

/* ============ FOOTER ============ */
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 24px var(--pad-x);
  border-top: 1px solid var(--ink);
}
.foot-left { display: flex; align-items: center; gap: 10px; }
.foot-wordmark { font-family: var(--font-mono); font-size: 13px; font-weight: 700; }
.foot-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--ink-muted);
}

/* ============================================================
   MOBILE — mirrors the 390px mobile frame
   ============================================================ */
@media (max-width: 900px) {
  :root { --pad-x: 20px; }

  /* Nav: hamburger menu */
  .nav { padding: 14px var(--pad-x); }
  .wordmark { font-size: 16px; }
  .logo-mark { width: 12px; height: 12px; }
  .menu-btn { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 10;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--ink);
  }
  .nav-toggle:checked ~ .nav-links { display: flex; }
  .nav-links a {
    padding: 16px var(--pad-x);
    border-top: 1px solid var(--border-subtle);
  }
  .nav-links a:hover { box-shadow: none; background: var(--surface-alt); }

  /* Hero: left-aligned, stacked CTAs */
  .hero {
    align-items: flex-start;
    text-align: left;
    gap: 24px;
    padding: 56px var(--pad-x) 48px;
  }
  .hero-badge { font-size: 10px; letter-spacing: 0.5px; padding: 7px 12px; gap: 8px; }
  .badge-dot { width: 7px; height: 7px; }
  .headline { align-items: flex-start; }
  .hero-sub { font-size: 16px; }
  .hero-ctas { flex-direction: column; align-items: stretch; width: 100%; gap: 12px; }
  .trust-strip { justify-content: flex-start; font-size: 11px; }
  .sep-desktop { display: none; }

  /* Diagram: vertical stack */
  .diagram-section { padding: 8px var(--pad-x) 56px; }
  .network-diagram { gap: 18px; padding: 18px; }
  .diagram-header { flex-direction: column; gap: 3px; font-size: 10px; }
  .diagram-row { flex-direction: column; align-items: stretch; gap: 0; }
  .connector {
    flex-direction: column;
    padding: 8px 0;
    gap: 3px;
    align-self: center;
  }
  .connector i { width: 1px; height: 6px; }
  .connector .arrow { font-size: 10px; transform: rotate(90deg); }
  .diagram-sum { text-align: left; font-size: 10px; letter-spacing: 0.5px; }

  /* Stats: stacked */
  .stats-strip { grid-template-columns: 1fr; }
  .stat { padding: 28px var(--pad-x); gap: 8px; }
  .stat + .stat { border-left: none; border-top: 1px solid var(--ink); }
  .stat-num { font-size: 44px; }

  /* Sections: left-aligned, stacked cards */
  .section { gap: 36px; padding: 56px var(--pad-x); align-items: stretch; }
  .section-head { align-items: flex-start; text-align: left; gap: 12px; }
  .kicker { font-size: 11px; }
  .card-grid { grid-template-columns: 1fr; gap: 16px; }
  .rule-card, .benefit-card { padding: 24px; gap: 14px; }
  .rule-card h3, .benefit-card h3 { font-size: 21px; }
  .icon-chip { padding: 8px; }

  /* Trade-offs: stacked */
  .trade-head { flex-direction: column; align-items: flex-start; gap: 4px; padding: 14px 20px; }
  .trade-row { grid-template-columns: 1fr; }
  .trade-cell { padding: 20px; gap: 10px; }
  .trade-cell + .trade-cell { border-left: none; border-top: 1px solid var(--ink); }
  .trade-cell h3 { font-size: 19px; }

  /* Code section: stacked */
  .code-section { flex-direction: column; align-items: stretch; gap: 32px; padding: 56px var(--pad-x); }
  .code-copy { gap: 18px; }
  .code-copy > p { font-size: 15px; }
  .code-points li { font-size: 11px; }
  .code-window { width: 100%; }
  .code-bar { padding: 10px 14px; }
  .file-name { font-size: 11px; }
  .file-meta { font-size: 10px; }
  .code-body { gap: 12px; padding: 14px; }
  .code-body pre { font-size: 10px; }

  /* Showcase: stacked card */
  .showcase-card { flex-direction: column; align-items: stretch; gap: 24px; padding: 16px; }
  .browser-mockup { width: 100%; }
  .bc-nav { padding: 12px 16px; }
  .bc-hero { padding: 24px 20px 28px; }
  .bc-shelf { padding: 0 20px 24px; }
  .case-copy { padding: 4px 4px 8px; gap: 16px; }
  .case-copy h3 { font-size: 24px; }
  .case-points li { gap: 10px; }

  /* Closing */
  .closing { align-items: flex-start; text-align: left; gap: 22px; padding: 72px var(--pad-x); }
  .close-sub { font-size: 16px; }
  .close-ctas { flex-direction: column; align-items: stretch; width: 100%; }

  /* Footer */
  .footer { flex-direction: column; align-items: flex-start; padding: 24px var(--pad-x); }
  .foot-meta { font-size: 10px; }
}