:root {
  --sp-bg: #0a0a0b;
  --sp-panel: #121214;
  --sp-line: rgba(255, 255, 255, .13);
  --sp-copy: #f2f2f1;
  --sp-soft: #cacacd;
  --sp-muted: #8e8e93;
  --sp-accent: #e5e5e6;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--sp-bg); scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 78% 8%, rgba(255,255,255,.045), transparent 31rem),
    radial-gradient(circle at 14% 46%, rgba(255,255,255,.025), transparent 34rem),
    var(--sp-bg);
  color: var(--sp-copy);
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.sample-shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.sample-header { border-bottom: 1px solid var(--sp-line); }
.sample-header .sample-shell {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.sample-brand { display: inline-flex; align-items: center; }
.sample-brand img { display: block; width: 144px; height: auto; }
.sample-header span {
  color: var(--sp-muted);
  font: 600 10px/1.2 "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.sample-hero { padding: clamp(70px, 10vw, 132px) 0 clamp(62px, 8vw, 100px); }
.sample-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  gap: clamp(38px, 7vw, 100px);
  align-items: end;
}
.sample-kicker, .sample-order, .field-label {
  margin: 0;
  color: var(--sp-muted);
  font: 650 10px/1.3 "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.sample-kicker { margin-bottom: 20px; color: var(--sp-soft); }
.sample-hero h1 {
  max-width: 840px;
  margin: 0;
  font: 560 clamp(46px, 6.7vw, 84px)/.97 Fraunces, Georgia, serif;
  letter-spacing: -.045em;
}
.sample-intro p { margin: 0; color: var(--sp-soft); font-size: clamp(16px, 1.8vw, 20px); line-height: 1.6; }
.sample-intro .sample-boundary { margin-top: 20px; color: var(--sp-muted); font: 500 11px/1.55 "IBM Plex Mono", monospace; }

.sample-business, .sample-plan, .sample-proof, .sample-action { border-top: 1px solid var(--sp-line); }
.sample-business, .sample-plan, .sample-proof { padding: clamp(56px, 8vw, 96px) 0; }
.sample-order { margin-bottom: 34px; color: var(--sp-soft); }
.business-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr 1.2fr 1.2fr;
  border: 1px solid var(--sp-line);
  border-radius: 22px;
  overflow: hidden;
  background: rgba(255,255,255,.018);
}
.business-grid > div { min-height: 250px; padding: 28px; }
.business-grid > div + div { border-left: 1px solid var(--sp-line); }
.business-grid h2 {
  margin: 15px 0 0;
  font: 560 clamp(28px, 3vw, 42px)/1 Fraunces, Georgia, serif;
  letter-spacing: -.035em;
}
.business-fact p:last-child {
  margin: 16px 0 0;
  color: var(--sp-soft);
  font-size: 15px;
  line-height: 1.6;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 7vw, 94px);
  align-items: end;
  margin-bottom: 44px;
}
.section-heading h2, .sample-action h2, .proof-record h2 {
  margin: 0;
  font: 560 clamp(36px, 5vw, 62px)/1 Fraunces, Georgia, serif;
  letter-spacing: -.04em;
}
.section-heading > p {
  margin: 0;
  color: var(--sp-soft);
  font-size: 17px;
  line-height: 1.65;
}
.storyboard {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  border: 1px solid var(--sp-line);
  border-radius: 22px;
  overflow: hidden;
  list-style: none;
  background: rgba(255,255,255,.018);
}
.storyboard li { min-height: 290px; display: flex; flex-direction: column; justify-content: space-between; gap: 48px; padding: 26px; }
.storyboard li + li { border-left: 1px solid var(--sp-line); }
.beat-time { color: var(--sp-copy); font: 600 12px/1 "IBM Plex Mono", monospace; }
.storyboard h3 { margin: 0; font: 560 24px/1.08 Fraunces, Georgia, serif; letter-spacing: -.025em; }
.storyboard p { margin: 13px 0 0; color: var(--sp-muted); font-size: 13.5px; line-height: 1.55; }
.proof-guard { margin-top: 22px; padding: 22px 26px; border-left: 2px solid var(--sp-accent); background: rgba(255,255,255,.022); }
.proof-guard p:last-child { margin: 9px 0 0; color: var(--sp-soft); font-size: 14px; line-height: 1.55; }

.proof-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr); gap: clamp(34px, 6vw, 76px); align-items: start; }
.proof-video video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--sp-line);
  border-radius: 18px;
  background: #050506;
  box-shadow: 0 35px 90px -42px #000;
}
.proof-video > p { margin: 13px 0 0; color: var(--sp-muted); font: 500 10.5px/1.5 "IBM Plex Mono", monospace; }
.proof-record h2 { margin-top: 14px; }
.proof-record dl { margin: 28px 0 0; border-top: 1px solid var(--sp-line); }
.proof-record dl div { display: grid; grid-template-columns: 1fr 1.35fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--sp-line); }
.proof-record dt { color: var(--sp-muted); font-size: 12px; }
.proof-record dd { margin: 0; color: var(--sp-soft); font: 500 11.5px/1.45 "IBM Plex Mono", monospace; overflow-wrap: anywhere; }
.format-disclosure { margin: 22px 0 0; color: var(--sp-muted); font-size: 12px; line-height: 1.6; }
.proof-record-link { display: inline-block; margin-top: 18px; padding-bottom: 3px; border-bottom: 1px solid rgba(255,255,255,.35); color: var(--sp-copy); font-size: 12px; font-weight: 650; text-decoration: none; }

.sample-action { padding: clamp(58px, 8vw, 92px) 0; background: rgba(255,255,255,.025); }
.action-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .62fr); gap: clamp(38px, 7vw, 100px); align-items: center; }
.sample-action .sample-order { margin-bottom: 18px; }
.sample-action p:last-child { max-width: 680px; margin: 20px 0 0; color: var(--sp-soft); font-size: 16px; line-height: 1.6; }
.sample-cta {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-radius: 15px;
  padding: 0 22px;
  background: var(--sp-accent);
  color: #101011;
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
  transition: transform .15s, filter .15s;
}
.sample-cta:hover { transform: translateY(-2px); filter: brightness(1.06); }

.sample-footer { padding: 28px 0; border-top: 1px solid var(--sp-line); }
.sample-footer .sample-shell { display: flex; justify-content: space-between; gap: 20px; color: #707075; font-size: 11px; }

@media (max-width: 900px) {
  .sample-hero-grid, .section-heading, .proof-grid, .action-grid { grid-template-columns: 1fr; }
  .business-grid, .storyboard { grid-template-columns: 1fr 1fr; }
  .business-grid > div + div, .storyboard li + li { border-left: 0; }
  .business-grid > div:nth-child(even), .storyboard li:nth-child(even) { border-left: 1px solid var(--sp-line); }
  .business-grid > div:nth-child(n+3), .storyboard li:nth-child(n+3) { border-top: 1px solid var(--sp-line); }
  .business-grid > div { min-height: 210px; }
  .storyboard li { min-height: 250px; }
}

@media (max-width: 560px) {
  .sample-shell { width: min(100% - 24px, 1160px); }
  .sample-header .sample-shell { min-height: 66px; }
  .sample-brand img { width: 126px; }
  .sample-header span { display: none; }
  .sample-hero { padding-top: 54px; }
  .sample-hero h1 { font-size: clamp(40px, 13vw, 58px); }
  .business-grid, .storyboard { grid-template-columns: 1fr; border-radius: 16px; }
  .business-grid > div, .storyboard li { min-height: 0; }
  .business-grid > div + div, .storyboard li + li,
  .business-grid > div:nth-child(even), .storyboard li:nth-child(even) { border-left: 0; border-top: 1px solid var(--sp-line); }
  .storyboard li { gap: 38px; }
  .proof-video video { border-radius: 12px; }
  .proof-record dl div { grid-template-columns: 1fr; gap: 5px; }
  .sample-footer .sample-shell { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .001ms !important; }
}