@font-face {
  font-family: "Inter";
  src: url("/fonts/inter-latin-variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg: #0a0a0a;
  --bg-raised: #171717;
  --panel: #171717;
  --panel-soft: #111111;
  --line: #262626;
  --line-strong: rgba(39, 128, 255, 0.56);
  --text: #fafafa;
  --muted: #a1a1aa;
  --blue: #2780ff;
  --blue-cta: #1767d1;
  --cyan: #2780ff;
  --green: #22c55e;
  --yellow: #f97316;
  --red: #ef4444;
  --max: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding-bottom: 104px;
  background: radial-gradient(circle at 12% 4%, rgba(39, 128, 255, 0.15), transparent 30rem), var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(105deg, rgba(39, 128, 255, 0.03), transparent 35%);
}

img, video { max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible, video:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 4px;
}
.wrap { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.section { padding: 94px 0 0; }
.section-tight { padding-top: 66px; }

.topbar {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 22px;
  border-bottom: 1px solid var(--line);
}
.c2c-logo { min-height: 44px; display: inline-flex; align-items: center; flex: 0 0 auto; }
.c2c-logo img { display: block; width: 158px; height: auto; }
.brand-divider { width: 1px; height: 28px; background: var(--line); }
.client-brand { display: inline-flex; align-items: center; gap: 10px; min-width: 0; }
.client-brand img { display: block; max-width: 170px; max-height: 38px; object-fit: contain; object-position: left center; }
.client-brand.logo-plate {
  min-height: 46px;
  padding: 5px 9px;
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 9px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
}
.client-brand.logo-plate img { max-height: 36px; }
.client-wordmark { font-size: 15px; font-weight: 900; letter-spacing: 0.09em; text-transform: uppercase; }
.case-meta { margin-left: auto; color: var(--muted); font-size: 11px; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; white-space: nowrap; }

.hero-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 36px 0 34px;
  text-align: center;
}
.hero-stage > * { min-width: 0; }
.hero-copy { width: 100%; max-width: 1040px; }
.kicker, .section-kicker, .proof-label {
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.hero-stage .kicker { color: var(--cyan); font-size: 16px; font-weight: 750; letter-spacing: -0.01em; line-height: 1.4; text-transform: none; }
.section-kicker { color: var(--yellow); }
h1 {
  max-width: 1040px;
  margin: 14px auto 16px;
  font-size: clamp(40px, 4.5vw, 60px);
  line-height: 0.99;
  letter-spacing: -0.057em;
  text-wrap: balance;
}
h1 .accent { color: var(--cyan); }
.lede { max-width: 900px; margin: 0 auto; color: var(--muted); font-size: clamp(17px, 1.65vw, 21px); text-wrap: pretty; }
.hero-actions, .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.hero-actions { justify-content: center; }
.btn {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 12px;
  font: inherit;
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms var(--ease), background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: var(--blue-cta); box-shadow: 0 10px 24px rgba(39, 128, 255, 0.18); }
.btn-primary:hover { background: #0f55b4; box-shadow: 0 12px 30px rgba(39, 128, 255, 0.24); }
.btn-secondary { color: var(--text); background: rgba(242, 246, 250, 0.04); border-color: var(--line); }
.btn-secondary:hover { background: rgba(242, 246, 250, 0.08); border-color: var(--line-strong); }
.btn svg { width: 18px; height: 18px; }

.metric-ribbon {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.metric { padding: 26px 28px; position: relative; }
.metric + .metric { border-left: 1px solid var(--line); }
.metric strong { display: block; font-size: clamp(26px, 3vw, 38px); line-height: 1; letter-spacing: -0.04em; }
.metric span { display: block; max-width: 280px; margin-top: 9px; color: var(--muted); font-size: 14px; }
.metric small { display: inline-block; margin-top: 11px; color: var(--yellow); font-size: 12px; font-weight: 800; letter-spacing: 0.02em; }

.video-shell {
  margin-top: 38px;
  padding: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 26px;
  background: var(--panel-soft);
  overflow: hidden;
}
.hero-stage .video-shell { width: 100%; max-width: 600px; margin-top: 22px; text-align: left; }
.video-shell video { display: block; width: 100%; aspect-ratio: 16 / 9; border-radius: 18px; background: #030507; object-fit: contain; }
.video-caption { display: flex; align-items: center; gap: 10px; padding: 14px 10px 5px; color: var(--muted); font-size: 13px; }
.video-caption::before { content: ""; width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: var(--green); }

.section-heading { max-width: 880px; margin-bottom: 36px; }
h2 { margin: 12px 0 16px; font-size: clamp(34px, 4.8vw, 58px); line-height: 1.03; letter-spacing: -0.045em; text-wrap: balance; }
.section-heading p, .intro { max-width: 800px; margin: 0; color: var(--muted); font-size: 19px; }
h3 { margin: 0; font-size: 22px; line-height: 1.15; letter-spacing: -0.025em; }

.problem-band {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.6fr);
  gap: 36px;
  padding: 42px;
  border-top: 1px solid rgba(239, 68, 68, 0.34);
  border-bottom: 1px solid rgba(239, 68, 68, 0.2);
  background: linear-gradient(90deg, rgba(239, 68, 68, 0.06), transparent 58%);
}
.problem-band h2 { margin-top: 0; }
.problem-band p { margin: 0; color: var(--muted); font-size: 18px; }
.problem-list { display: grid; gap: 14px; align-content: center; }
.problem-list span { display: flex; gap: 11px; align-items: flex-start; color: var(--muted); font-size: 14px; }
.problem-list span::before { content: ""; width: 9px; height: 9px; margin-top: 0.46em; flex: 0 0 auto; border-radius: 2px; background: var(--red); }

.evidence-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.evidence-grid figure { margin: 0; min-width: 0; overflow: hidden; border: 1px solid var(--line); background: var(--panel-soft); }
.evidence-grid figure:first-child { grid-column: 1 / -1; }
.evidence-grid img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; background: #0a0a0a; }
.evidence-grid figcaption { min-height: 62px; padding: 15px 17px; border-top: 1px solid var(--line); color: #dfe8f1; font-size: 13px; line-height: 1.45; }

.system-rail { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding-top: 12px; }
.system-rail::before { content: ""; position: absolute; top: 45px; left: 7%; right: 7%; height: 2px; background: linear-gradient(90deg, var(--blue), var(--blue), var(--yellow), var(--green)); opacity: 0.76; }
.rail-step { min-width: 0; padding: 17px 14px 18px; border: 1px solid var(--line); background: rgba(10, 16, 23, 0.94); position: relative; }
.rail-number { width: 32px; height: 32px; display: grid; place-items: center; position: relative; z-index: 1; margin-bottom: 36px; border: 1px solid var(--line-strong); border-radius: 50%; background: var(--bg-raised); color: var(--cyan); font-size: 11px; font-weight: 900; }
.rail-step b { display: block; font-size: 14px; }
.rail-step span { display: block; margin-top: 7px; color: var(--muted); font-size: 12px; line-height: 1.4; }
.rail-step small { display: block; margin-top: 14px; color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: 0.04em; }
.system-note { margin-top: 18px; color: var(--yellow); font-size: 12px; font-weight: 800; text-align: center; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.plain-panel { padding: 30px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.plain-panel p { margin: 10px 0 0; color: var(--muted); }
.plain-panel ul { margin: 20px 0 0; padding: 0; list-style: none; display: grid; gap: 11px; }
.plain-panel li { position: relative; padding-left: 21px; color: var(--muted); }
.plain-panel li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 8px; height: 8px; border-radius: 2px; background: var(--blue); }
.plain-panel.verified { border-top-color: rgba(34, 197, 94, 0.45); }
.plain-panel.verified li::before { background: var(--green); }
.plain-panel.boundary { border-top-color: rgba(249, 115, 22, 0.45); }
.plain-panel.boundary li::before { background: var(--yellow); }

.bar-chart { display: grid; gap: 18px; }
.bar-row { display: grid; grid-template-columns: 160px 1fr 126px; gap: 18px; align-items: center; }
.bar-row > span { color: var(--muted); font-size: 14px; }
.bar-track { height: 24px; position: relative; border: 1px solid var(--line); background: #0a0a0a; overflow: hidden; }
.bar-fill { display: block; width: var(--bar, 50%); height: 100%; background: linear-gradient(90deg, #1769dc, var(--blue)); transform-origin: left; animation: bar-grow 900ms var(--ease) both; }
.bar-fill.green { background: linear-gradient(90deg, #1f9e62, var(--green)); }
.bar-fill.yellow { background: linear-gradient(90deg, #c4580b, var(--yellow)); }
.bar-row strong { text-align: right; font-variant-numeric: tabular-nums; }
@keyframes bar-grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.proof-equation { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: stretch; gap: 14px; }
.equation-piece { display: grid; align-content: center; min-height: 160px; padding: 24px; border: 1px solid var(--line); background: var(--panel-soft); }
.equation-piece strong { display: block; font-size: clamp(34px, 4.3vw, 56px); line-height: 1; letter-spacing: -0.045em; }
.equation-piece span { display: block; margin-top: 9px; color: var(--muted); font-size: 13px; }
.equation-piece.negative strong { color: var(--red); }
.equation-piece.positive strong { color: var(--green); }
.operator { display: grid; place-items: center; color: var(--cyan); font-size: 28px; font-weight: 900; }

details { border-bottom: 1px solid var(--line); }
summary { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; list-style: none; font-size: 19px; font-weight: 800; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--cyan); font-size: 28px; font-weight: 500; }
details[open] summary::after { content: "−"; }
details p { max-width: 800px; margin: -3px 0 24px; color: var(--muted); font-size: 17px; }

.final-cta { margin: 102px 0 0; padding: 54px; border: 1px solid var(--line-strong); background: radial-gradient(circle at 84% 18%, rgba(39, 128, 255, 0.18), transparent 35%), var(--panel-soft); text-align: center; }
.final-cta h2 { max-width: 900px; margin: 0 auto; }
.final-cta p { max-width: 720px; margin: 18px auto 0; color: var(--muted); font-size: 18px; }
.final-cta .actions { justify-content: center; }

.more-cases { padding: 98px 0 80px; }
.more-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 28px; }
.more-heading h2 { margin-bottom: 0; }
.more-heading p { max-width: 380px; margin: 0; color: var(--muted); }
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.case-card { min-height: 320px; position: relative; display: flex; align-items: end; overflow: hidden; border: 1px solid var(--line); background: #111; text-decoration: none; isolation: isolate; }
.case-card-bg { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: contain; opacity: 0.3; transition: transform 500ms var(--ease), opacity 500ms ease; }
.case-card::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(to top, rgba(7, 7, 7, 0.99) 14%, rgba(7, 7, 7, 0.76) 56%, rgba(7, 7, 7, 0.32)); }
.case-card:hover .case-card-bg { transform: scale(1.025); opacity: 0.42; }
.case-card-brand { position: absolute; top: 24px; left: 24px; right: 24px; z-index: 1; min-height: 42px; display: flex; align-items: center; gap: 12px; }
.case-card-brand img { display: block; width: auto; max-width: 210px; max-height: 44px; object-fit: contain; object-position: left center; }
.case-card-brand.logo-plate {
  right: auto;
  min-height: 0;
  max-width: calc(100% - 48px);
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}
.case-card-brand.logo-plate img { max-width: 230px; max-height: 48px; }
.case-card-brand .case-card-wordmark { color: #fff; font-size: 17px; font-weight: 900; letter-spacing: 0.08em; text-transform: uppercase; }
.case-card-copy { width: 100%; padding: 30px 24px 24px; }
.case-card-copy small { color: var(--cyan); font-size: 12px; font-weight: 800; }
.case-card-copy strong { display: block; max-width: 520px; margin-top: 7px; font-size: clamp(27px, 3vw, 36px); line-height: 1.02; letter-spacing: -0.04em; text-wrap: balance; }
.case-card-copy span { display: inline-flex; margin-top: 16px; color: var(--yellow); font-size: 13px; font-weight: 800; }

.footer { min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); color: #778696; font-size: 12px; }
.footer img { width: 142px; opacity: 0.7; }

.sticky-cta {
  position: fixed;
  left: 50%;
  bottom: 18px;
  z-index: 50;
  width: min(760px, calc(100% - 28px));
  min-height: 72px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  align-items: center;
  padding: 10px 10px 10px 20px;
  border: 1px solid rgba(111, 189, 255, 0.42);
  border-radius: 18px;
  background: rgba(10, 10, 10, 0.98);
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.52);
  visibility: hidden;
  opacity: 0;
  transform: translate(-50%, 30px) scale(0.97);
  pointer-events: none;
  transition: opacity 260ms ease, transform 420ms var(--ease);
}
.sticky-cta.is-visible { visibility: visible; opacity: 1; transform: translate(-50%, 0) scale(1); pointer-events: auto; }
.sticky-copy strong { display: block; font-size: 14px; }
.sticky-copy span { display: block; margin-top: 2px; color: var(--muted); font-size: 11px; }
.sticky-cta .btn { min-height: 50px; padding-inline: 18px; font-size: 13px; }

.js [data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity 600ms ease, transform 680ms var(--ease); }
.js [data-reveal].is-revealed { opacity: 1; transform: translateY(0); }

@media (max-width: 920px) {
  .hero-stage { padding-top: 34px; }
  .problem-band { grid-template-columns: 1fr; }
  .system-rail { grid-template-columns: repeat(3, 1fr); }
  .system-rail::before { display: none; }
  .rail-number { margin-bottom: 20px; }
}

@media (max-width: 700px) {
  body { padding-bottom: 138px; }
  .wrap { width: min(var(--max), calc(100% - 28px)); }
  .topbar { min-height: 74px; gap: 13px; }
  .c2c-logo img { width: 126px; }
  .client-brand img { max-width: 118px; max-height: 30px; }
  .client-brand.logo-plate { min-height: 40px; padding: 4px 7px; }
  .client-brand.logo-plate img { max-width: 112px; max-height: 30px; }
  .client-wordmark { font-size: 11px; }
  .case-meta { display: none; }
  h1 { letter-spacing: -0.045em; }
  .hero-stage .kicker { font-size: 15px; line-height: 1.45; letter-spacing: -0.01em; }
  .hero-actions { width: 100%; flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .metric-ribbon { grid-template-columns: 1fr; }
  .metric { padding: 20px 4px; }
  .metric + .metric { border-left: 0; border-top: 1px solid var(--line); }
  .evidence-grid { grid-template-columns: 1fr; }
  .evidence-grid figure:first-child { grid-column: auto; }
  .problem-band { padding: 30px 20px; }
  .system-rail { grid-template-columns: 1fr 1fr; }
  .split, .case-grid { grid-template-columns: 1fr; }
  .proof-equation { grid-template-columns: 1fr; }
  .operator { min-height: 26px; }
  .bar-row { grid-template-columns: 1fr; gap: 8px; }
  .bar-row strong { text-align: left; }
  .more-heading { align-items: flex-start; flex-direction: column; }
  .final-cta { padding: 38px 22px; }
  .sticky-cta { grid-template-columns: 1fr 1fr; padding: 10px; }
  .sticky-copy { grid-column: 1 / -1; padding: 2px 4px; }
  .sticky-cta .btn { width: 100%; padding-inline: 10px; }
  .footer { flex-direction: column; justify-content: center; padding: 28px 0; text-align: center; }
}

@media (max-width: 460px) {
  .brand-divider { display: none; }
  .client-brand { margin-left: auto; }
  .hero-stage { padding-top: 28px; }
  .hero-actions, .actions { flex-direction: column; }
  .hero-actions .btn, .actions .btn { width: 100%; }
  .system-rail { grid-template-columns: 1fr; }
  .case-card { min-height: 250px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
}