:root {
  --ink: #1c2b33;
  --muted: #5f6670;
  --paper: #f7f8fa;
  --white: #ffffff;
  --line: #dfe3e8;
  --accent: #0866ff;
  --accent-dark: #0057d9;
  --accent-soft: #e7f0ff;
  --accent-pale: #eef4ff;
  --warm: #0866ff;
  --shadow: 0 24px 70px rgba(17, 27, 54, 0.1);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 85% 5%, rgba(8, 102, 255, 0.11), transparent 28rem),
    var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.section-shell,
.site-header {
  width: min(1160px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(16, 34, 36, 0.1);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 750;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 18px;
  height: 18px;
  border: 5px solid var(--accent);
  border-radius: 50% 50% 50% 12%;
  transform: rotate(-45deg);
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

nav a {
  transition: color 160ms ease;
}

nav a:hover {
  color: var(--accent-dark);
}

.nav-paper {
  color: var(--ink);
}

.hero {
  padding-block: 112px 70px;
  text-align: center;
}

.eyebrow,
.section-number {
  margin: 0 0 18px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 980px;
  margin: 0 auto 28px;
  font-size: clamp(48px, 7.2vw, 92px);
  font-weight: 630;
  letter-spacing: -0.065em;
  line-height: 0.98;
}

h1 em {
  color: var(--accent);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
}

.lede {
  max-width: 710px;
  margin: 0 auto 34px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 44px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 750;
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  object-fit: contain;
}

.button-primary {
  background: var(--ink);
  color: var(--white);
}

.button-primary:hover {
  background: var(--accent-dark);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.68);
}

.button-secondary:hover {
  border-color: var(--accent);
}

.authors {
  max-width: 800px;
  margin: 0 auto;
  color: #344854;
  font-size: 13px;
  line-height: 1.7;
}

.authors span {
  display: block;
  color: var(--muted);
}

.hero-figure {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.hero-figure img {
  width: 100%;
}

.caption,
figcaption {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.hero-figure .caption {
  padding: 18px 24px;
  border-top: 1px solid var(--line);
}

.caption b,
figcaption b {
  color: var(--ink);
}

.summary {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 80px;
  padding-block: 150px;
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 640;
  letter-spacing: -0.055em;
  line-height: 1.03;
}

.summary-copy {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-content: end;
  color: var(--muted);
  font-size: 17px;
}

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

.method {
  padding-block: 120px;
  border-radius: 34px;
  background: var(--ink);
  color: var(--white);
}

.method > * {
  width: min(100% - 96px, 970px);
  margin-inline: auto;
}

.method .section-number {
  color: #87b5ff;
}

.section-heading {
  max-width: 760px;
  text-align: center;
}

.section-heading > p:last-child {
  max-width: 650px;
  margin: 0 auto 56px;
  color: #b7c5c5;
  font-size: 17px;
}

.feature-figure {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: var(--white);
}

.feature-figure img {
  width: 100%;
}

.feature-figure figcaption {
  padding: 18px 22px;
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: #9dafaf;
}

.feature-figure figcaption span {
  display: block;
  margin-bottom: 2px;
  color: var(--white);
  font-weight: 750;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 54px;
  background: rgba(255, 255, 255, 0.14);
}

.steps article {
  padding: 25px 28px 10px;
  background: var(--ink);
}

.steps article > span {
  display: inline-grid;
  width: 30px;
  height: 30px;
  margin-bottom: 26px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 50%;
  color: #87b5ff;
  font-size: 12px;
  font-weight: 800;
}

.steps h3 {
  margin-bottom: 7px;
  font-size: 18px;
}

.steps p {
  color: #aebcbc;
  font-size: 14px;
}

.streaming {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 72px;
  align-items: center;
  padding-block: 160px;
}

.streaming-copy > p:not(.section-number) {
  color: var(--muted);
  font-size: 17px;
}

.streaming-copy em {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
}

.compare-key {
  display: grid;
  gap: 10px;
  margin-top: 30px;
  color: #415456;
  font-size: 13px;
}

.compare-key span {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.dot-muted {
  background: #9daaaa;
}

.dot-light {
  background: #83bbb7;
}

.dot-accent {
  background: var(--warm);
}

.compact-figure {
  border-color: var(--line);
  box-shadow: var(--shadow);
}

.compact-figure figcaption {
  background: var(--white);
  color: var(--muted);
}

.compact-figure figcaption span {
  color: var(--ink);
}

.results {
  padding-block: 110px 140px;
  border-top: 1px solid var(--line);
}

.results-heading > p:last-child {
  color: var(--muted);
}

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

.metric {
  min-height: 270px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.metric-primary {
  border-color: transparent;
  background: var(--accent);
  color: var(--white);
}

.metric-value {
  margin-bottom: 32px;
  font-size: clamp(42px, 5vw, 66px);
  font-weight: 680;
  letter-spacing: -0.06em;
  line-height: 1;
}

.metric-value span {
  font-size: 0.46em;
  letter-spacing: -0.03em;
}

.metric h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.metric > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
}

.metric-primary > p:last-child {
  color: rgba(255, 255, 255, 0.78);
}

.results-figure {
  overflow: hidden;
  margin: 68px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.results-figure img {
  width: 100%;
}

.results-figure figcaption {
  padding: 18px 24px;
  border-top: 1px solid var(--line);
}

.takeaway {
  padding-block: 125px;
  border-radius: 34px;
  background: var(--accent-pale);
  text-align: center;
}

.takeaway h2 {
  max-width: 900px;
  margin: 0 auto 36px;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: -0.045em;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  padding-block: 40px;
  color: var(--muted);
  font-size: 13px;
}

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

@media (max-width: 850px) {
  .summary,
  .streaming {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .summary-copy {
    grid-template-columns: 1fr 1fr;
  }

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

  .metric {
    min-height: 0;
  }
}

@media (max-width: 620px) {
  .section-shell,
  .site-header {
    width: min(100% - 28px, 1160px);
  }

  .site-header {
    height: 68px;
  }

  nav a:not(.nav-paper) {
    display: none;
  }

  .hero {
    padding-block: 76px 48px;
  }

  h1 {
    font-size: 49px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .summary {
    padding-block: 105px;
  }

  .summary-copy,
  .steps {
    grid-template-columns: 1fr;
  }

  .method {
    padding-block: 84px;
    border-radius: 24px;
  }

  .method > * {
    width: min(100% - 32px, 970px);
  }

  .steps {
    gap: 0;
    background: transparent;
  }

  .steps article {
    border-top: 1px solid rgba(255, 255, 255, 0.14);
  }

  .streaming {
    padding-block: 105px;
  }

  .results {
    padding-block: 90px 105px;
  }

  .takeaway {
    padding: 88px 22px;
    border-radius: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}