:root {
  --paper: #f7f8fa;
  --paper-2: #eef2f6;
  --silver: #d8dee8;
  --panel: rgba(255, 255, 255, 0.78);
  --panel-strong: #ffffff;
  --ink: #17202b;
  --text: #17202b;
  --muted: #637083;
  --cyan: #167ea3;
  --cyan-soft: #dff5fb;
  --green: #2f8b70;
  --amber: #b97b23;
  --coral: #cc5b5b;
  --violet: #8067c9;
  --line: rgba(23, 32, 43, 0.12);
  --shadow: 0 24px 70px rgba(45, 59, 76, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 16% 0%, rgba(22, 126, 163, 0.12), transparent 34rem),
    radial-gradient(circle at 90% 8%, rgba(128, 103, 201, 0.1), transparent 26rem),
    linear-gradient(180deg, #fbfcfd 0%, var(--paper) 44%, #edf2f7 100%);
  letter-spacing: 0;
}

body::before {
  position: fixed;
  inset: 0;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(23, 32, 43, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 32, 43, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

img {
  display: block;
  max-width: 100%;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 56px);
  border-bottom: 1px solid transparent;
  background: rgba(247, 248, 250, 0.76);
  backdrop-filter: blur(18px);
  transition: border-color 180ms ease, background 180ms ease;
}

.site-header.is-elevated {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.brand,
.site-footer span:first-child {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 760;
}

.brand-mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid rgba(101, 216, 255, 0.44);
  border-radius: 8px;
  color: var(--cyan);
  background: var(--cyan-soft);
}

.nav-links {
  display: flex;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover,
.header-cta:hover {
  color: var(--text);
}

.header-cta {
  min-width: max-content;
  padding: 10px 14px;
  border: 1px solid rgba(22, 126, 163, 0.24);
  border-radius: 8px;
  color: var(--cyan);
  font-size: 14px;
  background: rgba(255, 255, 255, 0.72);
}

.section-shell {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  min-height: calc(100vh - 72px);
  align-items: center;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: clamp(34px, 6vw, 76px);
  padding: 58px 0 44px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 760;
  line-height: 1.4;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 12px;
  font-size: clamp(56px, 9vw, 116px);
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4.2vw, 58px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
  line-height: 1.2;
}

.hero-line {
  max-width: 780px;
  margin-bottom: 20px;
  color: #243044;
  font-size: clamp(26px, 3.4vw, 45px);
  font-weight: 680;
  line-height: 1.04;
}

.hero-body,
.section-heading p,
.showcase-copy p,
.trust-copy p,
.split-section p,
.final-cta p,
.thesis-band p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.hero-body {
  max-width: 680px;
  margin-bottom: 28px;
}

.hero-actions,
.final-cta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 13px 18px;
  font-weight: 740;
}

.button-primary {
  color: #ffffff;
  background: var(--cyan);
  box-shadow: 0 16px 44px rgba(22, 126, 163, 0.18);
}

.button-secondary {
  border: 1px solid var(--line);
  color: #243044;
  background: rgba(255, 255, 255, 0.74);
}

.signal-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 34px 0 0;
}

.signal-row div,
.three-grid article,
.metric-grid article,
.roadmap article,
.boundary-panel,
.loop-grid div {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 12px 38px rgba(45, 59, 76, 0.08);
}

.signal-row div {
  padding: 14px;
}

.signal-row dt {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
}

.signal-row dd {
  margin: 0;
  font-size: 14px;
  font-weight: 720;
}

.hero-visual {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(22, 126, 163, 0.16);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: #667386;
  font-size: 12px;
}

.window-bar span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--silver);
}

.window-bar span:first-child {
  background: var(--coral);
}

.window-bar span:nth-child(2) {
  background: var(--amber);
}

.window-bar span:nth-child(3) {
  background: var(--green);
}

.window-bar strong {
  margin-left: 6px;
  font-weight: 680;
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.floating-proof {
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: min(320px, calc(100% - 36px));
  padding: 14px;
  border: 1px solid rgba(47, 139, 112, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
}

.floating-proof span {
  display: block;
  margin-bottom: 6px;
  color: var(--green);
  font-size: 12px;
  font-weight: 780;
  text-transform: uppercase;
}

.floating-proof strong {
  display: block;
  font-size: 14px;
  line-height: 1.45;
  color: #1f2c38;
}

.thesis-band,
.trust-section,
.split-section,
.final-cta {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: 76px 0;
}

.thesis-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.34);
}

.problem-grid,
.product-section,
.metrics-section,
.roadmap-section {
  padding: 104px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.narrow {
  max-width: 820px;
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.three-grid,
.metric-grid,
.roadmap {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.three-grid article,
.metric-grid article,
.roadmap article {
  min-height: 220px;
  padding: 24px;
}

.three-grid p,
.metric-grid p,
.roadmap p,
.loop-grid p {
  color: var(--muted);
  line-height: 1.6;
}

.card-index,
.roadmap span,
.metric-grid strong {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.loop-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.loop-grid div {
  min-height: 186px;
  padding: 18px;
}

.loop-grid span {
  display: block;
  margin-bottom: 16px;
  color: var(--cyan);
  font-weight: 800;
}

.showcase {
  padding: 94px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.46);
}

.showcase-grid {
  display: grid;
  align-items: center;
  grid-template-columns: 0.88fr 1.12fr;
  gap: clamp(34px, 6vw, 72px);
}

.check-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 24px;
  color: #dce6ef;
  color: #2a3746;
  line-height: 1.55;
}

.check-list li::before {
  position: absolute;
  left: 0;
  color: var(--green);
  content: "✓";
}

.image-stack {
  display: grid;
  gap: 16px;
}

.image-stack img {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  background: #ffffff;
}

.image-stack img:nth-child(2) {
  width: 78%;
  margin-left: auto;
}

.metric-grid article strong {
  margin-bottom: 18px;
  font-size: 28px;
  color: var(--green);
}

.boundary-panel {
  display: grid;
}

.boundary-row {
  display: grid;
  grid-template-columns: 0.5fr 1fr;
  gap: 18px;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.boundary-row:last-child {
  border-bottom: 0;
}

.boundary-row span {
  color: var(--muted);
}

.boundary-row strong {
  color: #1f2c38;
}

.audience-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.audience-cloud span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 14px;
  color: #e6eef6;
  background: rgba(255, 255, 255, 0.76);
}

.final-cta {
  margin-bottom: 72px;
  border: 1px solid rgba(101, 216, 255, 0.2);
  border-radius: 10px;
  padding: 38px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.86), rgba(223, 245, 251, 0.72));
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(20px, 4vw, 56px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 1040px) {
  .hero,
  .thesis-band,
  .showcase-grid,
  .trust-section,
  .split-section,
  .final-cta {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
  }

  .nav-links {
    display: none;
  }

  .header-cta {
    padding: 9px 12px;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 42px;
  }

  .signal-row,
  .three-grid,
  .metric-grid,
  .roadmap,
  .loop-grid {
    grid-template-columns: 1fr;
  }

  .problem-grid,
  .product-section,
  .metrics-section,
  .roadmap-section {
    padding: 72px 0;
  }

  .thesis-band,
  .trust-section,
  .split-section {
    padding: 58px 0;
  }

  .boundary-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .image-stack img:nth-child(2) {
    width: 100%;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 460px) {
  .section-shell {
    width: min(100% - 28px, 1160px);
  }

  .hero-actions .button,
  .final-cta .button {
    width: 100%;
  }

  h1 {
    font-size: 54px;
  }

  h2 {
    font-size: 34px;
  }

  .floating-proof {
    position: static;
    width: auto;
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 0;
  }
}