:root {
  --paper: #f7faf8;
  --white: #ffffff;
  --ink: #0f1720;
  --panel: #17222c;
  --muted: #6f6860;
  --line: rgba(15, 23, 32, 0.12);
  --deep: #0f1720;
  --teal: #0f8f83;
  --mint: #21c7ba;
  --teal-soft: #e8faf4;
  --brass: #18d1c2;
  --accent: #7894a6;
  --radius-card: 8px;
  --max: 1160px;
  --shadow: 0 24px 70px rgba(15, 23, 32, 0.14);
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(180deg, #f7faf8 0%, #eef4f2 48%, #e4ecea 100%),
    var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  width: min(var(--max), calc(100% - 36px));
  margin: 18px auto 0;
  padding: 10px;
  border: 1px solid var(--line);
  background: rgba(247, 250, 248, 0.88);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links,
.hero-actions,
.principles,
.workflow-grid,
.pricing-section,
.site-footer {
  display: flex;
}

.brand {
  align-items: center;
  gap: 10px;
  font-weight: 780;
}

.brand-mark {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
}

.tr-logo-plate {
  fill: var(--deep);
  stroke: rgba(24, 209, 194, 0.78);
  stroke-width: 1.8;
}

.tr-logo-t,
.tr-logo-r,
.tr-logo-accent {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tr-logo-t {
  stroke: #f6f8f7;
  stroke-width: 5.2;
}

.tr-logo-r {
  stroke: var(--brass);
  stroke-width: 4.2;
}

.tr-logo-accent {
  stroke: var(--accent);
  stroke-width: 3.4;
}

.tr-logo-dot {
  fill: var(--mint);
}

.nav-links {
  justify-content: center;
  gap: 4px;
}

.nav-links a,
.nav-action {
  min-height: 42px;
  padding: 11px 13px;
  border-radius: var(--radius-card);
  color: #3b4844;
  font-size: 0.94rem;
}

.nav-action,
.button-primary {
  color: var(--white) !important;
  -webkit-text-fill-color: var(--white);
  background: var(--deep);
}

.mobile-menu {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.82fr);
  align-items: center;
  gap: 84px;
  width: min(var(--max), calc(100% - 36px));
  margin: 98px auto 78px;
  padding: 48px;
  border: 1px solid rgba(246, 248, 247, 0.12);
  background:
    linear-gradient(90deg, rgba(246, 248, 247, 0.04) 1px, transparent 1px),
    linear-gradient(180deg, rgba(246, 248, 247, 0.035) 1px, transparent 1px),
    linear-gradient(135deg, #0f1720 0%, #17222c 58%, #243433 100%);
  background-size:
    76px 76px,
    76px 76px,
    auto;
  color: #f6f8f7;
}

.hero-copy,
.decision-preview,
.workflow-section,
.guardrails-section,
.pricing-section {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--brass);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(4.1rem, 7vw, 5.6rem);
  line-height: 0.88;
  font-weight: 840;
}

h2 {
  margin-bottom: 18px;
  max-width: 840px;
  font-size: clamp(2.1rem, 4.4vw, 3.9rem);
  line-height: 0.96;
  font-weight: 780;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.12rem;
  line-height: 1.18;
}

.lead {
  max-width: 680px;
  margin-bottom: 16px;
  color: rgba(246, 248, 247, 0.9);
  font-size: clamp(1.3rem, 2.1vw, 1.64rem);
  line-height: 1.42;
}

.hero-subcopy,
.section-heading p,
.workflow-grid p,
.guardrail-list p,
.preview-row p,
.site-footer {
  color: var(--muted);
  line-height: 1.68;
}

.hero-subcopy {
  max-width: 610px;
  color: rgba(246, 248, 247, 0.7);
  font-size: 1.06rem;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  font-weight: 760;
}

.button-secondary {
  color: #f6f8f7;
  background: rgba(246, 248, 247, 0.08);
}

.decision-preview {
  padding: 30px;
  border: 1px solid rgba(246, 248, 247, 0.18);
  border-radius: var(--radius-card);
  background: #ffffff;
  color: var(--ink);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.32);
}

.preview-top,
.preview-row,
.pricing-section,
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.preview-top {
  align-items: center;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 0.9rem;
}

.preview-top strong {
  color: var(--accent);
}

.decision-preview h2 {
  max-width: 430px;
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.preview-row {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.preview-row span {
  flex: 0 0 126px;
  color: var(--ink);
  font-weight: 760;
}

.preview-row p {
  margin: 0;
}

.principles {
  width: min(var(--max), calc(100% - 36px));
  margin: 0 auto;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  justify-content: space-between;
  gap: 18px;
  color: #665f55;
  font-size: 0.95rem;
}

.workflow-section,
.guardrails-section,
.pricing-section {
  width: min(var(--max), calc(100% - 36px));
  margin: 118px auto 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 34px;
}

.section-heading p:last-child {
  margin-bottom: 10px;
  max-width: 640px;
  font-size: 1.02rem;
}

.workflow-grid {
  gap: 1px;
  padding: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.workflow-grid article {
  flex: 1 1 0;
  min-width: 0;
  padding: 28px;
  background: var(--white);
}

.workflow-grid span {
  display: block;
  margin-bottom: 44px;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 800;
}

.workflow-grid p {
  margin-bottom: 0;
  font-size: 0.98rem;
}

.guardrails-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(420px, 1fr);
  gap: 82px;
  align-items: start;
}

.guardrail-list {
  border-top: 1px solid var(--line);
}

.guardrail-list article {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.guardrail-list p {
  margin-bottom: 0;
}

.pricing-section {
  align-items: center;
  margin-bottom: 84px;
  padding: 42px;
  border: 1px solid var(--line);
  background: var(--white);
}

.pricing-section h2 {
  max-width: 760px;
  margin-bottom: 0;
  font-size: clamp(1.9rem, 3.8vw, 3.1rem);
}

.site-footer {
  align-items: center;
  width: min(var(--max), calc(100% - 36px));
  margin: 0 auto;
  padding: 30px 0 44px;
  border-top: 1px solid var(--line);
  font-size: 0.94rem;
}

.site-footer span:first-child {
  color: var(--ink);
  font-weight: 780;
}

@media (max-width: 860px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
  }

  .nav-links,
  .nav-action {
    display: none;
  }

  .mobile-menu {
    display: block;
    justify-self: end;
    position: relative;
  }

  .mobile-menu summary {
    display: grid;
    place-items: center;
    gap: 4px;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--white);
    cursor: pointer;
    list-style: none;
  }

  .mobile-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu summary span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--deep);
  }

  .mobile-menu div {
    position: absolute;
    right: 0;
    top: 54px;
    display: grid;
    min-width: 220px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .mobile-menu a {
    padding: 13px 12px;
    border-radius: var(--radius-card);
    color: var(--ink);
    font-weight: 720;
  }

  .hero,
  .guardrails-section,
  .pricing-section {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 42px;
    margin-top: 74px;
  }

  h1 {
    font-size: clamp(3.1rem, 13vw, 4.2rem);
  }

  h2 {
    font-size: clamp(2.2rem, 10vw, 3.3rem);
  }

  .principles,
  .workflow-grid,
  .pricing-section,
  .site-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .workflow-grid article,
  .pricing-section,
  .decision-preview {
    padding: 24px;
  }

  .preview-row {
    flex-direction: column;
    gap: 8px;
  }

  .preview-row span {
    flex: 0 0 auto;
  }

  .workflow-section,
  .guardrails-section,
  .pricing-section {
    margin-top: 82px;
  }
}

/* brand-direction-13-preview-v1: supplied logo board choice, blue-grey/off-white with bright teal signal. */
:root {
  --paper: #f7faf8;
  --white: #ffffff;
  --ink: #0f1720;
  --panel: #17222c;
  --muted: #5d6b74;
  --line: rgba(15, 23, 32, 0.12);
  --deep: #0f1720;
  --teal: #18d1c2;
  --mint: #21c7ba;
  --teal-soft: #e9fbf8;
  --brass: #18d1c2;
  --accent: #7894a6;
  --shadow: 0 24px 70px rgba(15, 23, 32, 0.14);
}

body {
  background:
    linear-gradient(112deg, rgba(24, 209, 194, 0.1), transparent 30%),
    linear-gradient(180deg, #f7faf8 0%, #eef4f2 48%, #e4ecea 100%),
    var(--paper);
}

.site-header {
  background: rgba(247, 250, 248, 0.9);
}

.tr-logo-plate {
  fill: var(--deep);
  stroke: rgba(24, 209, 194, 0.78);
}

.tr-logo-r {
  stroke: var(--teal);
}

.tr-logo-accent {
  stroke: var(--accent);
}

.tr-logo-dot {
  fill: var(--mint);
}

.hero {
  background:
    linear-gradient(90deg, rgba(215, 224, 229, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(215, 224, 229, 0.036) 1px, transparent 1px),
    radial-gradient(circle at 78% 16%, rgba(24, 209, 194, 0.16), transparent 32%),
    linear-gradient(135deg, #0b1118 0%, #122331 58%, #173f46 100%);
}

.eyebrow,
.workflow-grid span,
.preview-top strong {
  color: var(--teal);
}

.decision-preview,
.workflow-grid article,
.pricing-section {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(238, 244, 242, 0.76)),
    var(--paper);
}

.nav-action,
.button-primary {
  background: var(--deep);
  border-color: rgba(24, 209, 194, 0.46);
}