:root {
  color-scheme: light;
  --ink: #13201f;
  --muted: #60706d;
  --paper: #f5f7fb;
  --panel: #ffffff;
  --panel-soft: #edf4f2;
  --line: #ccd9d5;
  --graphite: #172221;
  --emerald: #0f8f6f;
  --cyan: #1688a8;
  --blue: #3268ad;
  --amber: #b77818;
  --rose: #ad4b63;
  --shadow: 0 18px 50px rgba(23, 34, 33, 0.13);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.22em;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid rgba(204, 217, 213, 0.82);
  background: rgba(245, 247, 251, 0.92);
  backdrop-filter: blur(16px);
}

.brand,
.site-header nav {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand {
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 8px;
  background: var(--graphite);
  color: #f7fbfa;
  font-size: 0.78rem;
  letter-spacing: 0;
}

.site-header nav {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-header nav a {
  color: #31413f;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.site-header nav a:hover {
  color: var(--emerald);
}

.hero {
  position: relative;
  display: grid;
  min-height: 64vh;
  overflow: hidden;
  background: var(--graphite);
  isolation: isolate;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  object-fit: cover;
  object-position: 57% center;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(13, 21, 20, 0.92) 0%, rgba(13, 21, 20, 0.66) 38%, rgba(13, 21, 20, 0.16) 72%),
    linear-gradient(180deg, rgba(13, 21, 20, 0.1) 0%, rgba(13, 21, 20, 0.7) 100%);
  z-index: 1;
}

.hero-branding {
  position: absolute;
  z-index: 3;
  inset: 0;
  pointer-events: none;
}

.hero-badge,
.hero-watermark {
  position: absolute;
  right: clamp(20px, 4vw, 64px);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 11px 18px;
  border: 1px solid rgba(235, 246, 243, 0.5);
  border-radius: 999px;
  background: rgba(9, 20, 19, 0.62);
  color: #f7fbfa;
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(14px);
  font-weight: 850;
}

.hero-badge {
  top: clamp(24px, 5vw, 64px);
  font-size: 1.03rem;
}

.hero-watermark {
  bottom: clamp(24px, 5vw, 58px);
  color: #e3f5f1;
  font-size: 1rem;
}

.badge-icon,
.watermark-icon {
  position: relative;
  display: inline-block;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
}

.badge-icon::before {
  position: absolute;
  inset: 1px 3px 2px;
  border: 3px solid #67e6c5;
  border-top-width: 4px;
  border-radius: 4px 4px 8px 8px;
  content: "";
  transform: perspective(20px) rotateX(-10deg);
}

.badge-icon::after {
  position: absolute;
  top: 5px;
  left: 7px;
  width: 7px;
  height: 4px;
  border-bottom: 3px solid #67e6c5;
  border-left: 3px solid #67e6c5;
  content: "";
  transform: rotate(-45deg);
}

.watermark-icon {
  border: 3px solid #67e6c5;
  border-radius: 4px;
  transform: rotate(45deg);
}

.watermark-icon::after {
  position: absolute;
  inset: 4px;
  border: 2px solid rgba(103, 230, 197, 0.74);
  border-radius: 2px;
  content: "";
}

.hero-copy {
  position: relative;
  z-index: 2;
  align-self: center;
  width: min(860px, 100%);
  padding: clamp(56px, 7vw, 96px) clamp(20px, 6vw, 72px) clamp(42px, 6vw, 64px);
  color: #f6fbfa;
}

.eyebrow,
.section-kicker,
.stack-label {
  margin: 0;
  color: #177d68;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #66e5c4;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: 4.35rem;
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: 3rem;
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.08rem;
  line-height: 1.22;
}

.hero-lede {
  max-width: 700px;
  color: #d7e4e1;
  font-size: 1.18rem;
}

.hero-actions,
.architecture-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button,
.architecture-links a {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 8px;
  font-weight: 850;
  text-decoration: none;
}

.button.primary,
.architecture-links a:first-child {
  background: #67e6c5;
  color: #09201b;
}

.button.secondary,
.architecture-links a:last-child {
  border: 1px solid rgba(247, 251, 250, 0.38);
  background: rgba(247, 251, 250, 0.08);
  color: #f7fbfa;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border-bottom: 1px solid var(--line);
  background: var(--line);
}

.signal-strip article {
  min-height: 132px;
  padding: 26px clamp(18px, 3vw, 34px);
  background: #ffffff;
}

.signal-strip strong,
.signal-strip span {
  display: block;
}

.signal-strip strong {
  margin-bottom: 8px;
  color: #0d2721;
  font-size: 1rem;
}

.signal-strip span {
  color: var(--muted);
  font-size: 0.95rem;
}

.section {
  padding: clamp(68px, 9vw, 116px) clamp(20px, 5vw, 72px);
}

.section-heading,
.intro {
  display: grid;
  grid-template-columns: minmax(240px, 0.9fr) minmax(0, 1.35fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: start;
}

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

.section-heading h2,
.intro h2 {
  max-width: 720px;
}

.intro-copy {
  display: grid;
  gap: 18px;
  color: #344441;
  font-size: 1.12rem;
}

.intro-copy p {
  margin-bottom: 0;
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.stack-card,
.evidence-panel {
  min-height: 250px;
  padding: 26px;
  border: 1px solid var(--line);
  border-top: 6px solid var(--emerald);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 10px 32px rgba(23, 34, 33, 0.06);
}

.stack-card p,
.evidence-panel p {
  margin-bottom: 0;
  color: var(--muted);
}

.accent-emerald {
  border-top-color: var(--emerald);
}

.accent-cyan {
  border-top-color: var(--cyan);
}

.accent-blue {
  border-top-color: var(--blue);
}

.accent-amber {
  border-top-color: var(--amber);
}

.accent-graphite {
  border-top-color: var(--graphite);
}

.accent-rose {
  border-top-color: var(--rose);
}

.technical-depth {
  background: #edf4f2;
}

.technical-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.technical-grid article {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 12px 34px rgba(23, 34, 33, 0.06);
}

.technical-grid p {
  color: var(--muted);
}

.technical-grid ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.technical-grid li {
  position: relative;
  padding-left: 22px;
  color: #31413f;
}

.technical-grid li::before {
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--emerald);
  content: "";
}

.proof {
  background: #ffffff;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.proof-card {
  min-height: 260px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbfa;
}

.proof-index {
  display: grid;
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
  place-items: center;
  border-radius: 8px;
  background: #14201f;
  color: #67e6c5;
  font-weight: 900;
}

.proof-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.artifact-wall {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1.1fr 0.95fr;
  gap: 18px;
  margin-top: 28px;
  padding: 28px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(20, 32, 31, 0.96), rgba(20, 44, 40, 0.9)),
    #14201f;
  color: #f7fbfa;
  overflow: hidden;
}

.artifact-wall::before {
  position: absolute;
  inset: 28px;
  border: 1px dashed rgba(103, 230, 197, 0.22);
  content: "";
  pointer-events: none;
}

.mock-window {
  position: relative;
  z-index: 1;
  min-height: 210px;
  padding: 18px;
  border: 1px solid rgba(221, 238, 234, 0.22);
  border-radius: 8px;
  background: rgba(247, 251, 250, 0.08);
  backdrop-filter: blur(10px);
}

.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
}

.mock-titlebar span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #67e6c5;
}

.mock-titlebar span:nth-child(2) {
  background: #70bbda;
}

.mock-titlebar span:nth-child(3) {
  background: #c98b2e;
}

.mock-titlebar strong {
  margin-left: auto;
  color: #d3e2df;
  font-size: 0.82rem;
}

.mock-lines {
  display: grid;
  gap: 14px;
}

.mock-lines span {
  display: block;
  width: var(--w);
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(90deg, #67e6c5, rgba(112, 187, 218, 0.42));
}

.mini-flow {
  display: grid;
  grid-template-columns: 1fr 40px 1fr 40px 1fr;
  gap: 8px;
  align-items: center;
}

.mini-flow i {
  display: grid;
  min-height: 62px;
  place-items: center;
  border: 1px solid rgba(103, 230, 197, 0.32);
  border-radius: 8px;
  color: #e8f6f3;
  font-style: normal;
  font-weight: 800;
  text-align: center;
}

.mini-flow b {
  height: 2px;
  background: linear-gradient(90deg, #67e6c5, #c98b2e);
}

.cert-chip {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 120px;
  padding: 18px;
  border: 1px solid rgba(103, 230, 197, 0.26);
  border-radius: 8px;
  background: rgba(9, 25, 23, 0.52);
}

.cert-chip em {
  position: relative;
  display: block;
  flex: 0 0 auto;
  width: 54px;
  height: 66px;
  border: 3px solid #67e6c5;
  border-radius: 8px;
  font-style: normal;
}

.cert-chip em::after {
  position: absolute;
  left: 14px;
  bottom: -14px;
  width: 24px;
  height: 24px;
  border: 3px solid #c98b2e;
  border-radius: 999px;
  background: #14201f;
  content: "";
}

.cert-chip strong,
.cert-chip span {
  display: block;
}

.cert-chip span {
  color: #c1d1cd;
}

.architecture {
  background: #101b1a;
  color: #f7fbfa;
}

.architecture .section-kicker {
  color: #62dfc0;
}

.architecture .section-heading h2 {
  color: #f7fbfa;
}

.flow {
  display: grid;
  grid-template-columns: 1.05fr 52px 1.15fr 52px 1.08fr 52px 1.08fr;
  align-items: stretch;
  gap: 0;
}

.flow-column {
  display: grid;
  align-content: start;
  min-height: 250px;
  padding: 24px;
  border: 1px solid rgba(159, 191, 184, 0.32);
  border-radius: 8px;
  background: rgba(247, 251, 250, 0.07);
  box-shadow: var(--shadow);
}

.flow-column span {
  margin-bottom: 10px;
  color: #70e7c8;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.flow-column strong {
  margin-bottom: 10px;
  color: #ffffff;
  font-size: 1.18rem;
}

.flow-column p {
  margin-bottom: 0;
  color: #c1d1cd;
}

.flow-column.split {
  gap: 14px;
  align-content: stretch;
}

.flow-column.split div {
  padding: 18px;
  border: 1px solid rgba(159, 191, 184, 0.22);
  border-radius: 8px;
  background: rgba(9, 25, 23, 0.52);
}

.flow-connector {
  position: relative;
  min-height: 4px;
}

.flow-connector::before {
  position: absolute;
  top: 50%;
  left: 8px;
  right: 8px;
  height: 2px;
  background: linear-gradient(90deg, #62dfc0, #70bbda, #c98b2e);
  content: "";
}

.flow-connector::after {
  position: absolute;
  top: calc(50% - 5px);
  right: 4px;
  width: 10px;
  height: 10px;
  border-top: 2px solid #c98b2e;
  border-right: 2px solid #c98b2e;
  content: "";
  transform: rotate(45deg);
}

.architecture-links a:last-child {
  border-color: rgba(247, 251, 250, 0.28);
}

.decisions {
  background: #f8fbfa;
}

.decision-list {
  display: grid;
  gap: 16px;
}

.decision-list article {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 20px;
  align-items: stretch;
}

.decision-list article > span {
  display: grid;
  min-height: 100%;
  place-items: center;
  border: 1px solid rgba(15, 143, 111, 0.24);
  border-radius: 8px;
  background: #14201f;
  color: #67e6c5;
  font-weight: 900;
}

.decision-list article > div {
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.decision-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.evidence-layout {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 18px;
}

.evidence-panel {
  border-top-color: var(--cyan);
}

.timeline {
  background: #eaf1ef;
}

.timeline-list {
  display: grid;
  gap: 18px;
  max-width: 980px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline-list li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.timeline-list li > span {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border: 1px solid rgba(15, 143, 111, 0.28);
  border-radius: 8px;
  background: #ffffff;
  color: #0f7059;
  font-weight: 900;
}

.timeline-list div {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.timeline-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.impact {
  background: #ffffff;
}

.impact-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.impact-panel div {
  padding: 24px;
  background: #f8fbfa;
}

.impact-panel p {
  margin-bottom: 0;
  color: var(--muted);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 30px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  background: #ffffff;
  color: var(--muted);
}

.site-footer p {
  margin-bottom: 0;
}

.site-footer a {
  color: #0f7059;
  font-weight: 800;
}

.doc-page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px clamp(20px, 5vw, 44px) 96px;
}

.doc-hero {
  margin-bottom: 46px;
}

.doc-hero h1 {
  max-width: 920px;
  color: var(--ink);
}

.doc-hero p:last-child {
  max-width: 790px;
  color: var(--muted);
  font-size: 1.15rem;
}

.doc-section {
  margin-top: 36px;
}

.doc-section h2 {
  font-size: 1.75rem;
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.doc-grid article,
.quote-panel {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.doc-grid p,
.quote-panel p {
  margin-bottom: 0;
  color: var(--muted);
}

.doc-diagram {
  display: grid;
  grid-template-columns: 1fr 48px 1fr 1fr 48px 1fr 48px 1fr;
  gap: 10px;
  align-items: center;
  padding: 24px;
  border-radius: 8px;
  background: #101b1a;
  color: #f7fbfa;
}

.doc-diagram div {
  display: grid;
  min-height: 86px;
  place-items: center;
  padding: 16px;
  border: 1px solid rgba(103, 230, 197, 0.26);
  border-radius: 8px;
  background: rgba(247, 251, 250, 0.07);
  font-weight: 850;
  text-align: center;
}

.doc-diagram span {
  height: 2px;
  background: linear-gradient(90deg, #67e6c5, #70bbda);
}

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

.comparison-table [role="row"] {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr 1.2fr;
  gap: 1px;
}

.comparison-table [role="row"] > * {
  padding: 18px;
  background: #ffffff;
}

.comparison-table [role="row"]:first-child > * {
  background: #14201f;
  color: #f7fbfa;
}

@media (max-width: 1080px) {
  .signal-strip,
  .stack-grid,
  .evidence-layout,
  .proof-grid,
  .technical-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .artifact-wall,
  .impact-panel {
    grid-template-columns: 1fr;
  }

  .flow {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .flow-connector {
    display: none;
  }
}

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

  .site-header nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: auto;
  }

  .hero-copy {
    padding-top: 74px;
  }

  .hero-media {
    opacity: 0.62;
    object-position: 62% center;
  }

  .hero-badge,
  .hero-watermark {
    right: 20px;
    gap: 9px;
    padding: 8px 12px;
    font-size: 0.82rem;
  }

  .hero-badge {
    top: 16px;
  }

  .hero-watermark {
    top: 58px;
    bottom: auto;
  }

  .badge-icon,
  .watermark-icon {
    width: 16px;
    height: 16px;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.1rem;
  }

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

  .signal-strip,
  .stack-grid,
  .evidence-layout,
  .proof-grid,
  .technical-grid,
  .doc-grid {
    grid-template-columns: 1fr;
  }

  .stack-card,
  .evidence-panel {
    min-height: auto;
  }

  .timeline-list li {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .decision-list article {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .decision-list article > span {
    min-height: 48px;
    width: 54px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .artifact-wall {
    padding: 20px;
  }

  .mini-flow {
    grid-template-columns: 1fr;
  }

  .mini-flow b {
    width: 2px;
    height: 24px;
    margin: 0 auto;
  }

  .doc-page {
    padding-top: 48px;
  }

  .doc-diagram,
  .comparison-table [role="row"] {
    grid-template-columns: 1fr;
  }

  .doc-diagram span {
    width: 2px;
    height: 28px;
    margin: 0 auto;
  }
}

@media (max-width: 420px) {
  .hero-actions,
  .architecture-links {
    display: grid;
  }

  .button,
  .architecture-links a {
    width: 100%;
  }

  h1 {
    font-size: 2.5rem;
  }
}