:root {
  --obsidian: #0a0a0b;
  --crisp: #fafafa;
  --viridian: #ff2d87;
  --steel: #8e8e93;
  --hairline: #ececec;
  --ink: #f2eef0;
  --muted: #8d7c85;
  --surface: #161114;
  --border: #2b1f25;
  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "Courier New", Courier, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--crisp);
  color: var(--obsidian);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

::selection {
  background: var(--viridian);
  color: var(--obsidian);
}

.topbar {
  position: fixed;
  left: 0;
  right: 0;
  top: 16px;
  z-index: 50;
  display: flex;
  justify-content: center;
  padding: 0 16px;
  pointer-events: none;
}

.nav-shell {
  pointer-events: auto;
  width: min(960px, 100%);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  border: 1px solid rgba(10, 10, 11, 0.1);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
  border-radius: 999px;
  padding: 8px 10px 8px 12px;
  box-shadow: 0 14px 48px rgba(0, 0, 0, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: max-content;
}

.brand-mark {
  width: 28px;
  height: 28px;
  display: block;
  flex: 0 0 auto;
}

.brand-word {
  display: inline-flex;
  align-items: baseline;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.brand-word .brand-v {
  height: 0.73em;
  width: auto;
  margin-right: -0.05em;
  transform: translateY(0.012em);
}

.brand-word .brand-dot {
  display: inline-block;
  width: 0.16em;
  height: 0.16em;
  margin-left: 0.1em;
  background: currentColor;
}

.built-for {
  justify-self: center;
  margin: 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: rgba(10, 10, 11, 0.48);
  font-size: 13px;
}

.built-for strong {
  color: var(--obsidian);
  font-weight: 500;
}

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-radius: 999px;
  background: var(--obsidian);
  color: var(--crisp);
  padding: 9px 13px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.live-pill span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--viridian);
  box-shadow: 0 0 0 0 rgba(255, 45, 135, 0.65);
  animation: live-pulse 1.4s infinite;
}

.section {
  position: relative;
  padding: 88px 24px;
}

.hero {
  display: grid;
  place-items: center;
  overflow: hidden;
  padding-top: 150px;
  padding-bottom: 24px;
}

.grid-noise {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(circle, rgba(10, 10, 11, 0.065) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse at center, black 34%, transparent 74%);
}

.hero-inner {
  width: min(1050px, 100%);
  text-align: center;
}

.section-tag,
.mono-label {
  margin: 0;
  color: var(--viridian);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 18px auto 0;
  max-width: 900px;
  font-size: clamp(38px, 6.5vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.04em;
  font-weight: 300;
  overflow-wrap: anywhere;
}

.hero h1 [data-clinic] {
  color: var(--viridian);
  font-weight: 400;
}

.hero-copy {
  margin: 26px auto 0;
  max-width: 620px;
  color: var(--steel);
  font-size: 17px;
  line-height: 1.65;
}

.roi-section {
  max-width: 1240px;
  margin: 0 auto;
  padding-top: 24px;
}

.roi-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: 22px;
  align-items: stretch;
}

.panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  padding: 22px;
  box-shadow: 0 28px 90px -48px rgba(0, 0, 0, 0.8);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(105deg, transparent 42%, rgba(255, 45, 135, 0.06), transparent 58%);
  transform: translateX(-100%);
  animation: scan 7s ease-in-out infinite;
}

.panel > * {
  position: relative;
  z-index: 1;
}

.input-panel {
  display: grid;
  gap: 18px;
}

.slider-field {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.slider-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.slider-label span {
  color: var(--muted);
  font-size: 13px;
}

.slider-label strong {
  font-family: var(--font-mono);
  color: var(--ink);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--viridian);
  min-height: 44px;
}

.output-panel {
  display: grid;
  align-content: center;
}

.impact-header {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(180px, 0.75fr);
  gap: 20px;
  align-items: end;
}

.roi-total {
  display: block;
  margin: 14px 0 24px;
  color: var(--viridian);
  font-family: var(--font-mono);
  font-size: clamp(44px, 7vw, 78px);
  line-height: 1;
  letter-spacing: -0.05em;
  transition: text-shadow 180ms ease;
}

.roi-monthly {
  display: block;
  margin: 14px 0 24px;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1;
  letter-spacing: -0.04em;
  transition: text-shadow 180ms ease;
}

.roi-total.flash,
.roi-monthly.flash {
  text-shadow: 0 0 34px rgba(255, 45, 135, 0.35);
}

.breakdown {
  border-top: 1px solid var(--border);
}

.breakdown p {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin: 0;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
}

.breakdown strong {
  color: var(--ink);
  text-align: right;
  font-family: var(--font-mono);
}

.formula-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.formula-grid article {
  border: 1px solid rgba(10, 10, 11, 0.1);
  background: rgba(255, 255, 255, 0.92);
  padding: 20px;
  box-shadow: 0 18px 50px rgba(10, 10, 11, 0.06);
}

.formula-grid h3 {
  margin: 12px 0 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--obsidian);
}

.formula-grid p {
  min-height: 58px;
  margin: 12px 0 0;
  border-top: 1px solid rgba(10, 10, 11, 0.08);
  border-bottom: 1px solid rgba(10, 10, 11, 0.08);
  color: rgba(10, 10, 11, 0.72);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.55;
  padding: 12px 0;
}

.formula-grid strong {
  display: block;
  margin-top: 14px;
  color: var(--obsidian);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.formula-grid small {
  display: block;
  margin-top: 8px;
  color: rgba(10, 10, 11, 0.62);
  font-size: 12.5px;
}

.assumptions {
  margin-top: 18px;
  padding: 16px 18px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  border: 1px solid var(--hairline);
  background: rgba(255, 255, 255, 0.68);
  color: rgba(10, 10, 11, 0.66);
  font-size: 13px;
}

.assumptions span {
  color: var(--obsidian);
  font-weight: 700;
}

.assumptions p {
  margin: 0;
}

.cta-section {
  max-width: 1240px;
  margin: 0 auto;
  padding-bottom: 140px;
}

.cta-card {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  padding: 56px 32px;
  text-align: center;
  box-shadow: 0 28px 90px -48px rgba(0, 0, 0, 0.8);
}

.cta-card h2 {
  margin: 16px auto 0;
  max-width: 720px;
  font-size: clamp(30px, 4.5vw, 52px);
  line-height: 1.04;
  letter-spacing: -0.04em;
  font-weight: 300;
  overflow-wrap: anywhere;
}

.cta-card h2 [data-clinic] {
  color: var(--viridian);
}

.cta-copy {
  margin: 22px auto 30px;
  max-width: 560px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.cta-total {
  color: var(--viridian);
  font-family: var(--font-mono);
}

.cta-note {
  margin: 26px 0 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  padding: 13px 20px;
  color: inherit;
  cursor: pointer;
  transition: transform 160ms ease, filter 160ms ease;
}

.button.primary {
  background: var(--viridian);
  color: var(--obsidian);
  font-weight: 600;
}

.button.compact {
  min-height: 38px;
  padding: 9px 13px;
  font-size: 13px;
}

.button:hover {
  filter: brightness(1.04);
}

.button:active {
  transform: scale(0.98);
}

.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 12px 16px;
  background: rgba(10, 10, 11, 0.92);
  backdrop-filter: blur(14px);
  color: var(--crisp);
  transform: translateY(0);
  transition: transform 240ms ease;
}

.sticky-cta.hidden {
  transform: translateY(110%);
  pointer-events: none;
}

.sticky-cta p {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  min-width: 0;
}

.sticky-cta strong {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

@keyframes live-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 45, 135, 0.65); }
  70% { box-shadow: 0 0 0 9px rgba(255, 45, 135, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 45, 135, 0); }
}

@keyframes scan {
  0%, 45% { transform: translateX(-110%); }
  70%, 100% { transform: translateX(110%); }
}

@media (max-width: 980px) {
  .roi-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .section {
    padding: 70px 16px;
  }

  .hero {
    padding-top: 130px;
  }

  .nav-shell {
    grid-template-columns: auto 1fr;
  }

  .nav-shell .live-pill {
    display: none;
  }

  .built-for {
    justify-self: end;
    text-align: right;
  }

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

  .panel {
    padding: 16px;
  }

  .impact-header {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .cta-card {
    padding: 40px 20px;
  }

  .sticky-cta {
    gap: 12px;
  }

  .sticky-cta .mono-label {
    display: none;
  }
}

@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;
  }
}