:root {
  color-scheme: light;
  --bg: #f6f8fc;
  --surface: #ffffff;
  --surface-soft: #f0f5ff;
  --text: #101828;
  --muted: #5f6b7a;
  --line: #d9e1ee;
  --blue: #1557ff;
  --blue-dark: #0d3ed7;
  --violet: #7c3cff;
  --teal: #0ea5b7;
  --green: #16a365;
  --amber: #f59e0b;
  --red: #ef4444;
  --shadow: 0 18px 50px rgba(16, 24, 40, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(217, 225, 238, 0.85);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  color: var(--blue);
  border: 1px solid rgba(21, 87, 255, 0.24);
  border-radius: 8px;
  background: #fff;
}

.brand-mark svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  line-height: 1.1;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 26px;
  color: #334155;
  font-size: 14px;
}

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

.nav-cta,
.button {
  border: 0;
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  cursor: pointer;
}

.nav-cta {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 10px 24px rgba(21, 87, 255, 0.22);
}

.button.primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 12px 28px rgba(21, 87, 255, 0.24);
}

.button.primary:hover,
.nav-cta:hover {
  background: var(--blue-dark);
}

.button.secondary {
  color: var(--blue);
  background: #fff;
  border: 1px solid rgba(21, 87, 255, 0.22);
}

.button.tertiary {
  color: #344054;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(217, 225, 238, 0.9);
}

.button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.hero-section {
  position: relative;
  min-height: min(760px, calc(100vh - 48px));
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: clamp(56px, 7vw, 96px) clamp(18px, 5vw, 72px);
  background: #edf3ff;
}

.hero-visual {
  position: absolute;
  inset: 34px max(-150px, -7vw) auto auto;
  width: min(980px, 78vw);
  max-height: calc(100% - 50px);
  object-fit: contain;
  object-position: right top;
  filter: drop-shadow(0 24px 60px rgba(16, 24, 40, 0.18));
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, #f7fbff 0%, rgba(247, 251, 255, 0.98) 34%, rgba(247, 251, 255, 0.72) 56%, rgba(247, 251, 255, 0.16) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0) 72%, var(--bg) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 690px;
  padding-block: clamp(8px, 3vw, 44px);
}

.product-line,
.section-kicker {
  margin: 0 0 13px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  max-width: 670px;
  font-size: clamp(38px, 5.2vw, 70px);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-copy {
  margin: 24px 0 0;
  max-width: 620px;
  color: #344054;
  font-size: clamp(17px, 1.5vw, 21px);
}

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

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 640px;
  margin: 34px 0 0;
}

.hero-metrics div {
  min-height: 88px;
  padding: 16px;
  border: 1px solid rgba(217, 225, 238, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.hero-metrics dt {
  margin: 0 0 6px;
  color: #111827;
  font-size: 14px;
  font-weight: 800;
}

.hero-metrics dd {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.demo-result-panel {
  max-width: 640px;
  margin-top: 14px;
  padding: 18px;
  border: 1px solid rgba(21, 87, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 16px 36px rgba(16, 24, 40, 0.08);
}

.demo-panel-header,
.demo-winner,
.demo-ranking li,
.demo-failures li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.demo-label {
  margin: 0 0 3px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.demo-panel-header h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.15;
}

.demo-status {
  flex: 0 0 auto;
  padding: 7px 10px;
  border-radius: 8px;
  color: #1849b9;
  background: #edf3ff;
  font-size: 12px;
  font-weight: 900;
}

.demo-status[data-mode="running"] {
  color: #92400e;
  background: #fff7ed;
}

.demo-status[data-mode="error"] {
  color: #b42318;
  background: #fff1f0;
}

.demo-hint {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.demo-output {
  margin-top: 16px;
}

.demo-winner {
  padding: 14px;
  border: 1px solid rgba(22, 163, 101, 0.24);
  border-radius: 8px;
  background: #f2fbf7;
}

.demo-winner .winner-mark {
  width: 38px;
  height: 38px;
}

.demo-winner div {
  flex: 1;
}

.demo-winner strong,
.demo-winner span {
  display: block;
}

.demo-winner span {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.demo-grid h3 {
  margin: 0 0 8px;
  font-size: 13px;
}

.demo-ranking,
.demo-failures {
  display: grid;
  gap: 7px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.demo-ranking li,
.demo-failures li {
  min-height: 34px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: #344054;
  font-size: 12px;
}

.demo-ranking strong,
.demo-failures strong {
  color: #111827;
}

.section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(56px, 7vw, 88px) 0;
}

.section.band {
  width: 100%;
  padding-inline: max(18px, calc((100% - 1180px) / 2));
  background: #fff;
  border-block: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 30px;
}

.section-heading.compact {
  display: block;
  max-width: 760px;
}

.section-heading h2,
.product-copy h2,
.boundary-section h2,
.final-cta h2 {
  margin: 0;
  font-size: clamp(28px, 3.2vw, 44px);
  line-height: 1.12;
  letter-spacing: 0;
}

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

.value-card,
.scenario-grid article,
.product-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 10px 28px rgba(16, 24, 40, 0.05);
}

.value-card {
  min-height: 238px;
  padding: 24px;
}

.icon-chip {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 28px;
  border-radius: 8px;
  color: #fff;
  font-size: 20px;
  font-weight: 900;
}

.icon-chip.blue {
  background: var(--blue);
}

.icon-chip.violet {
  background: var(--violet);
}

.icon-chip.green {
  background: var(--green);
}

.value-card h3,
.scenario-grid h3 {
  margin: 0 0 10px;
  font-size: 20px;
  letter-spacing: 0;
}

.value-card p,
.scenario-grid p,
.product-copy p {
  margin: 0;
  color: var(--muted);
}

.workflow-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  list-style: none;
  padding: 0;
  margin: 34px 0 0;
}

.workflow-list li {
  min-height: 178px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
}

.workflow-list span {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 18px;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  font-weight: 800;
}

.workflow-list strong {
  display: block;
  margin-bottom: 8px;
}

.workflow-list p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.product-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.75fr);
  gap: 28px;
  align-items: center;
}

.product-copy p {
  max-width: 650px;
  margin-top: 18px;
}

.check-list,
.boundary-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.check-list li,
.boundary-list li {
  position: relative;
  padding-left: 28px;
  color: #344054;
}

.check-list li::before,
.boundary-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--green);
  font-weight: 900;
}

.product-panel {
  padding: 22px;
  box-shadow: var(--shadow);
}

.panel-header,
.winner-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.panel-header span {
  color: var(--violet);
  font-size: 12px;
  font-weight: 800;
}

.winner-row {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid rgba(21, 87, 255, 0.22);
  border-radius: 8px;
  background: #f7faff;
}

.winner-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  font-weight: 900;
}

.winner-row div:nth-child(2) {
  flex: 1;
}

.winner-row strong,
.winner-row span {
  display: block;
}

.winner-row span {
  color: var(--muted);
  font-size: 13px;
}

.winner-row b {
  color: var(--green);
  font-size: 28px;
}

.signal-stack {
  display: grid;
  gap: 12px;
  margin-top: 20px;
  color: #344054;
  font-size: 14px;
}

.dot {
  width: 9px;
  height: 9px;
  display: inline-block;
  margin-right: 8px;
  border-radius: 999px;
  vertical-align: 1px;
}

.green-dot {
  background: var(--green);
}

.comparison-table {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.table-row {
  display: grid;
  grid-template-columns: minmax(160px, 0.75fr) minmax(220px, 1fr) minmax(280px, 1.25fr);
  gap: 18px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

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

.table-head {
  color: #111827;
  background: var(--surface-soft);
  font-weight: 800;
}

.table-row span {
  min-width: 0;
}

.scenario-grid article {
  min-height: 178px;
  padding: 24px;
}

.boundary-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
  gap: 28px;
  align-items: start;
}

.boundary-list {
  margin-top: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.final-cta {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto 56px;
  padding: clamp(34px, 6vw, 58px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-radius: 8px;
  background: #0f172a;
  color: #fff;
}

.final-cta h2 {
  max-width: 780px;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero-section {
    min-height: auto;
    padding-top: 46px;
    padding-bottom: 0;
  }

  .hero-visual {
    position: relative;
    inset: auto;
    order: 2;
    width: min(100%, 760px);
    margin-top: 26px;
  }

  .hero-overlay {
    background: linear-gradient(180deg, #f7fbff 0%, #edf3ff 82%, var(--bg) 100%);
  }

  .hero-content {
    max-width: none;
  }

  .section-heading,
  .product-section,
  .boundary-section {
    grid-template-columns: 1fr;
  }

  .value-grid,
  .workflow-list,
  .scenario-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .table-row {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .final-cta {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 12px 16px;
  }

  .brand small,
  .nav-cta {
    display: none;
  }

  .hero-section {
    padding-inline: 18px;
  }

  h1 {
    font-size: 36px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .hero-metrics,
  .value-grid,
  .workflow-list,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

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

  .demo-panel-header,
  .demo-winner {
    align-items: flex-start;
    flex-direction: column;
  }

  .section {
    width: min(100% - 28px, 1180px);
  }

  .winner-row {
    align-items: flex-start;
    flex-direction: column;
  }
}