*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  color-scheme: light;
  --bg: #f7f8f8;
  --ink: #0b0d0f;
  --text: #535b64;
  --muted: #858c94;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-solid: #ffffff;
  --line: rgba(11, 13, 15, 0.1);
  --line-strong: rgba(11, 13, 15, 0.18);
  --accent: #b85b3b;
  --accent-soft: rgba(184, 91, 59, 0.12);
  --glow: rgba(184, 91, 59, 0.28);
  --radius: 14px;
  --font: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
  --max-w: 1180px;
  --transition: 180ms ease;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background: var(--bg);
}

body {
  min-width: 320px;
  min-height: 100dvh;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -20%, rgba(184, 91, 59, 0.13), transparent 34rem),
    linear-gradient(180deg, #fbfbfb 0%, var(--bg) 42%, #eef0f1 100%);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: "kern", "liga", "calt";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button,
input {
  font: inherit;
}

button {
  border: 0;
  background: none;
  cursor: pointer;
}

.container {
  width: min(100% - 48px, var(--max-w));
  margin-inline: auto;
}

.section {
  padding: 124px 0;
  scroll-margin-top: 88px;
}

.narrow {
  max-width: 920px;
}

.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  padding: 0 24px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(11, 13, 15, 0.08);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.nav.scrolled,
.nav.menu-open {
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: rgba(11, 13, 15, 0.1);
  box-shadow: 0 18px 48px rgba(11, 13, 15, 0.08);
}

.nav-inner {
  width: min(100%, var(--max-w));
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 auto;
}

.brand,
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 800;
}

.brand img,
.footer-brand img {
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: #58616a;
  font-size: 15px;
  font-weight: 760;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-links .nav-cta {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border: 1px solid rgba(11, 13, 15, 0.9);
  border-radius: 999px;
  color: #fff;
  background: var(--ink);
  box-shadow: 0 12px 36px rgba(11, 13, 15, 0.16);
}

.nav-hamburger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.68);
}

.nav-hamburger span {
  width: 16px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.nav-mobile-menu {
  display: none;
}

.btn {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: var(--ink);
  box-shadow: 0 18px 44px rgba(11, 13, 15, 0.18);
}

.hero {
  position: relative;
  min-height: 100dvh;
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

#signal-canvas {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  opacity: 1;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 50% 48%, rgba(255, 255, 255, 0.08), transparent 24rem),
    linear-gradient(180deg, rgba(247, 248, 248, 0.06), rgba(247, 248, 248, 0.5) 78%, var(--bg));
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: -1;
  width: min(96vw, 1120px);
  height: min(54vw, 520px);
  transform: translate(-50%, -50%);
  border-radius: 999px;
  background:
    linear-gradient(90deg, transparent 5%, rgba(255,255,255,0.2) 24%, rgba(255,255,255,0.32) 52%, rgba(255,255,255,0.18) 80%, transparent 96%),
    radial-gradient(ellipse at 42% 48%, rgba(184, 91, 59, 0.1), transparent 54%),
    radial-gradient(ellipse at 62% 52%, rgba(11, 13, 15, 0.032), transparent 64%);
  filter: blur(18px);
  opacity: 0.76;
  animation: signalBreathe 7s ease-in-out infinite;
  pointer-events: none;
}

.hero-noise {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(11, 13, 15, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 13, 15, 0.025) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 50%, rgba(0,0,0,0.9), transparent 72%);
  pointer-events: none;
}

.hero-inner {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 20px;
  padding: 92px 0 72px;
  text-align: center;
}

.hero-kicker,
.micro-label {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 980px;
  color: var(--ink);
  font-size: clamp(58px, 8.4vw, 120px);
  font-weight: 860;
  letter-spacing: 0;
  line-height: 0.9;
  text-wrap: balance;
}

.hero-sub {
  max-width: 760px;
  color: #39414a;
  font-size: clamp(18px, 1.55vw, 21px);
  line-height: 1.48;
  text-wrap: balance;
}

h2 {
  color: var(--ink);
  font-size: clamp(38px, 4.9vw, 72px);
  font-weight: 850;
  letter-spacing: 0;
  line-height: 0.98;
  text-wrap: balance;
}

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

.problem-copy {
  display: grid;
  gap: 22px;
  max-width: 700px;
  margin-top: 38px;
}

.problem-copy p,
.evidence-copy p,
.operator-copy p,
.verification-copy p,
.report-heading p,
.cta-shell p {
  color: var(--text);
  font-size: clamp(17px, 1.45vw, 20px);
  line-height: 1.58;
}

.problem-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  max-width: 900px;
  margin-top: 34px;
  margin-inline: auto;
}

.problem-chips span,
.problem-chips strong {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 15px;
  border: 1px solid rgba(11, 13, 15, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: #4f5962;
  font-size: 14px;
  font-weight: 720;
  box-shadow: 0 14px 34px rgba(11, 13, 15, 0.05);
}

.problem-chips strong {
  flex-basis: 100%;
  justify-content: center;
  justify-self: center;
  max-width: max-content;
  margin-inline: auto;
  border-color: rgba(184, 91, 59, 0.24);
  background: rgba(184, 91, 59, 0.1);
  color: var(--accent);
  text-align: center;
}

.solution {
  padding-top: 108px;
  padding-bottom: 118px;
}

.solution-shell {
  max-width: 1040px;
  padding: 72px 0 78px;
  border-top: 1px solid rgba(11, 13, 15, 0.12);
  border-bottom: 1px solid rgba(11, 13, 15, 0.12);
  text-align: center;
}

.solution-shell h2 {
  margin-inline: auto;
  max-width: 900px;
}

.solution-shell p {
  max-width: 760px;
  margin: 26px auto 0;
  color: var(--text);
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.55;
}

.evidence {
  padding-top: 76px;
}

.evidence-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.68fr);
  gap: 58px;
  align-items: center;
}

.verification-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.68fr) minmax(0, 1.12fr);
  gap: 58px;
  align-items: center;
}

.evidence-copy,
.verification-copy,
.operator-copy {
  display: grid;
  gap: 24px;
}

.evidence-visual,
.workspace-frame,
.bug-frame,
.report-window {
  margin: 0;
}

.evidence-visual img,
.workspace-frame img,
.bug-frame img,
.report-window img {
  width: 100%;
  height: auto;
  border: 1px solid rgba(11, 13, 15, 0.1);
  border-radius: var(--radius);
  background: var(--surface-solid);
  box-shadow: 0 38px 94px rgba(11, 13, 15, 0.13);
}

.evidence-visual figcaption {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
}

.operator {
  padding-top: 86px;
}

.operator-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.74fr) minmax(0, 1.08fr);
  gap: 58px;
  align-items: center;
}

.verification {
  padding-top: 86px;
}

.report {
  padding-top: 92px;
}

.report-stack {
  display: grid;
  gap: 42px;
}

.report-heading {
  max-width: 840px;
}

.report-heading p {
  max-width: 720px;
  margin-top: 22px;
}

.report-window {
  height: min(760px, 58vw);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  background: var(--surface-solid);
  box-shadow: 0 42px 110px rgba(11, 13, 15, 0.12);
}

.report-window img {
  height: 100%;
  object-fit: cover;
  object-position: 50% 0%;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.answers {
  padding-top: 54px;
  padding-bottom: 58px;
}

.answers-grid {
  display: grid;
  grid-template-columns: minmax(170px, 0.34fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  max-width: 980px;
}

.answers-heading {
  display: grid;
  gap: 10px;
}

.answers-heading h2 {
  font-size: clamp(24px, 2.45vw, 34px);
  line-height: 1.04;
  letter-spacing: 0;
}

.answers-heading p {
  max-width: 340px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.answer-list {
  display: grid;
  border-top: 1px solid rgba(11, 13, 15, 0.1);
}

.answer-item {
  border-bottom: 1px solid rgba(11, 13, 15, 0.1);
}

.answer-item summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 60px;
  padding: 18px 42px 17px 0;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
  font-size: clamp(16px, 1.35vw, 18px);
  font-weight: 830;
  line-height: 1.22;
  -webkit-appearance: none;
  appearance: none;
}

.answer-item summary::marker {
  content: "";
  font-size: 0;
}

.answer-item summary::-webkit-details-marker {
  display: none;
}

.answer-item summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 0;
  width: 26px;
  height: 26px;
  border: 1px solid rgba(11, 13, 15, 0.12);
  border-radius: 999px;
  color: rgba(11, 13, 15, 0.54);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  line-height: 24px;
  text-align: center;
  transition: border-color 180ms ease, color 180ms ease, transform 180ms ease;
  transform: translateY(-50%);
}

.answer-item[open] summary {
  padding-bottom: 10px;
}

.answer-item[open] summary::after {
  content: "-";
  border-color: rgba(178, 77, 44, 0.38);
  color: var(--accent);
  transform: translateY(-50%) rotate(180deg);
}

.answer-item summary:hover::after {
  border-color: rgba(178, 77, 44, 0.34);
  color: var(--accent);
}

.answer-item summary:focus-visible {
  outline: 2px solid rgba(178, 77, 44, 0.38);
  outline-offset: 5px;
  border-radius: 8px;
}

.answer-item p {
  max-width: 760px;
  margin: 0 0 6px;
  padding: 0 54px 22px 15px;
  border-left: 2px solid rgba(178, 77, 44, 0.2);
  color: rgba(57, 65, 74, 0.86);
  font-size: 15px;
  line-height: 1.64;
}

.final-cta {
  padding-top: 94px;
  padding-bottom: 122px;
}

.cta-shell {
  display: grid;
  gap: 24px;
  max-width: 900px;
  padding: 54px;
  border: 1px solid rgba(11, 13, 15, 0.11);
  border-radius: calc(var(--radius) + 6px);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.82), rgba(255,255,255,0.56)),
    var(--surface);
  box-shadow: 0 34px 96px rgba(11, 13, 15, 0.1);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.cta-form {
  max-width: 660px;
  margin-top: 10px;
}

.cta-form label {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 740;
}

.form-row {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  gap: 10px;
}

.cta-input {
  min-height: 52px;
  min-width: 0;
  padding: 0 16px;
  border: 1px solid rgba(11, 13, 15, 0.16);
  border-radius: 999px;
  outline: 0;
  color: var(--ink);
  background: #fff;
}

.cta-input::placeholder {
  color: #7d858d;
}

.cta-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(184, 91, 59, 0.14);
}

.footer {
  padding: 32px 0 42px;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  display: flex;
  gap: 22px;
}

.footer-links a {
  color: var(--muted);
  font-size: 13px;
  font-weight: 680;
}

.footer-links a:hover {
  color: var(--ink);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 760ms ease, transform 760ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes signalBreathe {
  0%, 100% {
    transform: translate(-50%, -50%) scaleX(0.985) scaleY(0.96);
    opacity: 0.68;
  }
  50% {
    transform: translate(-50%, -50%) scaleX(1.02) scaleY(1.04);
    opacity: 0.9;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 980px) {
  .evidence-grid,
  .operator-layout,
  .verification-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .operator-copy,
  .evidence-copy {
    order: -1;
  }

  .report-window {
    height: 600px;
  }

  .answers-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .answers-heading {
    position: static;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 32px, var(--max-w));
  }

  .nav {
    padding: 0 16px;
  }

  .nav-inner {
    height: 64px;
  }

  .nav-links > a {
    display: none;
  }

  .nav-links .nav-cta {
    display: none;
  }

  .nav-hamburger {
    display: inline-flex;
  }

  .nav-mobile-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    z-index: 49;
    flex-direction: column;
    gap: 10px;
    padding: 16px 24px 20px;
    border-bottom: 1px solid var(--line);
    background: rgba(247, 248, 248, 0.95);
    box-shadow: 0 18px 52px rgba(11, 13, 15, 0.1);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
  }

  .nav-mobile-menu.open {
    display: flex;
  }

  .nav-mobile-menu a {
    padding: 8px 0;
    color: var(--ink);
    font-weight: 760;
  }

  .section {
    padding: 82px 0;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-inner {
    min-height: 100dvh;
    align-content: center;
    padding: 72px 0 24vh;
  }

  .hero h1 {
    font-size: clamp(48px, 16vw, 72px);
  }

  #signal-canvas {
    inset: auto 0 0;
    height: 42dvh;
    opacity: 0.88;
  }

  .hero::before {
    background:
      radial-gradient(ellipse at 50% 74%, rgba(255, 255, 255, 0.08), transparent 18rem),
      linear-gradient(180deg, rgba(247, 248, 248, 0.12), rgba(247, 248, 248, 0.34) 68%, var(--bg));
  }

  .hero::after {
    top: 80%;
    width: 116vw;
    height: 30dvh;
    filter: blur(16px);
    opacity: 0.62;
  }

  .hero-noise {
    mask-image: radial-gradient(circle at 50% 72%, rgba(0,0,0,0.82), transparent 62%);
  }

  .problem-chips {
    margin-top: 30px;
  }

  .problem-chips span,
  .problem-chips strong {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .solution {
    padding-top: 80px;
    padding-bottom: 84px;
  }

  .solution-shell {
    padding: 56px 0 60px;
    text-align: left;
  }

  .report-window {
    height: 440px;
  }

  .answers {
    padding-top: 42px;
    padding-bottom: 46px;
  }

  .answer-item summary {
    min-height: 56px;
    padding: 17px 38px 14px 0;
    font-size: 16px;
  }

  .answer-item p {
    padding-right: 8px;
    padding-bottom: 20px;
    padding-left: 13px;
    font-size: 14px;
    line-height: 1.62;
  }

  .cta-shell {
    padding: 28px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-row .btn {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}