:root {
  --ink: #172126;
  --muted: #5d6d74;
  --line: #d9e0e3;
  --panel: #f5f7f8;
  --paper: #ffffff;
  --teal: #007f78;
  --teal-dark: #005c58;
  --amber: #d99a1c;
  --oxide: #b85f38;
  --charcoal: #10191e;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
}

a {
  color: var(--teal-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--oxide);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  padding: 0 5vw;
  background: rgba(16, 25, 30, 0.96);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border: 3px solid var(--amber);
  border-left-color: var(--teal);
  transform: rotate(45deg);
}

.topbar nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-size: 14px;
}

.topbar a {
  color: #e7eff1;
  text-decoration: none;
}

.topbar a:hover {
  color: #fff;
}

.hero {
  position: relative;
  min-height: 620px;
  height: 74vh;
  max-height: 760px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--charcoal);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero::before {
  background: linear-gradient(90deg, rgba(10, 16, 19, 0.94) 0%, rgba(10, 16, 19, 0.84) 34%, rgba(10, 16, 19, 0.34) 66%, rgba(10, 16, 19, 0.12) 100%);
  z-index: 1;
}

.hero::after {
  background: linear-gradient(0deg, rgba(10, 16, 19, 0.72) 0%, rgba(10, 16, 19, 0.02) 42%);
  z-index: 2;
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
}

.hero-content {
  position: relative;
  z-index: 3;
  width: min(1180px, 90vw);
  margin: 0 auto;
  padding: 52px 0 42px;
  color: #fff;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  color: #d9eff0;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 3px;
  background: var(--amber);
}

.hero h1 {
  max-width: 780px;
  margin: 0 0 22px;
  font-size: 48px;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero .lede {
  max-width: 660px;
  margin: 0 0 30px;
  color: #e3ecef;
  font-size: 20px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 0 0 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  background: var(--amber);
  color: #151b1f;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(130px, 1fr));
  gap: 12px;
  width: min(780px, 100%);
}

.metric {
  min-height: 86px;
  padding: 15px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(10, 16, 19, 0.58);
}

.metric strong {
  display: block;
  color: #fff;
  font-size: 20px;
  line-height: 1.2;
}

.metric span {
  display: block;
  margin-top: 6px;
  color: #c7d6da;
  font-size: 13px;
  line-height: 1.35;
}

.intro-band {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 34px;
  width: min(1180px, 90vw);
  margin: 0 auto;
  padding: 44px 0;
}

.intro-grid p {
  margin: 0;
  font-size: 18px;
}

.quote-panel {
  padding: 22px;
  border-left: 5px solid var(--teal);
  background: #fff;
  box-shadow: 0 18px 40px rgba(20, 32, 38, 0.08);
}

.quote-panel strong {
  display: block;
  margin-bottom: 8px;
  color: var(--teal-dark);
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
  gap: 44px;
  width: min(1180px, 90vw);
  margin: 0 auto;
  padding: 52px 0 72px;
}

.toc {
  position: sticky;
  top: 88px;
  align-self: start;
  padding: 18px 0;
  border-top: 4px solid var(--amber);
}

.toc-title {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
}

.toc a {
  display: block;
  padding: 7px 0;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.35;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.toc a:hover {
  color: var(--teal-dark);
}

main {
  min-width: 0;
}

article h2 {
  margin: 54px 0 18px;
  padding-top: 8px;
  color: var(--ink);
  font-size: 31px;
  line-height: 1.2;
  letter-spacing: 0;
}

article h3 {
  margin: 34px 0 12px;
  color: #25343b;
  font-size: 23px;
  line-height: 1.3;
  letter-spacing: 0;
}

article p {
  margin: 0 0 18px;
}

article ul {
  margin: 0 0 24px;
  padding-left: 22px;
}

article li {
  margin: 7px 0;
}

article table {
  width: 100%;
  margin: 24px 0 30px;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.45;
}

article th,
article td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  vertical-align: top;
}

article th {
  background: #edf3f3;
  color: #203139;
  text-align: left;
}

article tr:nth-child(even) td {
  background: #fafbfb;
}

pre {
  overflow-x: auto;
  margin: 22px 0 28px;
  padding: 18px;
  border-left: 5px solid var(--teal);
  background: #111b20;
  color: #eaf2f3;
  border-radius: 0 8px 8px 0;
  font-size: 14px;
  line-height: 1.55;
}

code {
  font-family: Consolas, Monaco, "Courier New", monospace;
}

p code,
li code {
  padding: 2px 5px;
  background: #eef4f4;
  color: #14373a;
  border-radius: 4px;
}

.visual-block {
  margin: 42px 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.visual-block img {
  display: block;
  width: 100%;
  height: auto;
}

.visual-caption {
  padding: 14px 16px;
  color: var(--muted);
  font-size: 14px;
  border-top: 1px solid var(--line);
}

.cta-section {
  margin-top: 56px;
  padding: 32px;
  color: #fff;
  background: var(--charcoal);
  border-top: 6px solid var(--amber);
  border-radius: 8px;
}

.cta-section h2 {
  margin-top: 0;
  color: #fff;
}

.cta-section p {
  color: #dce6e8;
}

.cta-section .button {
  margin-top: 8px;
}

.footer {
  padding: 28px 5vw;
  color: #c8d3d7;
  background: var(--charcoal);
  font-size: 14px;
}

.footer a {
  color: #fff;
}

@media (max-width: 960px) {
  .topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .topbar nav {
    justify-content: flex-start;
  }

  .hero {
    align-items: flex-start;
    min-height: 640px;
    height: auto;
    max-height: none;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero .lede {
    font-size: 18px;
  }

  .hero-metrics,
  .intro-grid,
  .page-shell {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 20px;
    padding-bottom: 26px;
  }

  .toc-title {
    grid-column: 1 / -1;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15px;
  }

  .hero {
    min-height: 700px;
    max-height: none;
  }

  .hero::before {
    background: linear-gradient(90deg, rgba(10, 16, 19, 0.96), rgba(10, 16, 19, 0.76));
  }

  .hero img {
    object-position: 62% center;
  }

  .hero h1 {
    font-size: 31px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

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

  .hero-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  article h2 {
    font-size: 26px;
  }

  article h3 {
    font-size: 21px;
  }

  article table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .cta-section {
    padding: 24px;
  }
}