:root {
  --paper: #f7f5ef;
  --ink: #17201d;
  --muted: #5c6863;
  --line: #cbd2cd;
  --accent: #176b56;
  --accent-strong: #0d4c3c;
  --accent-soft: #dceee7;
  --card: #ffffff;
  --shadow: 0 20px 60px rgba(20, 42, 35, 0.12);
}

body[data-theme="quiet"] {
  --paper: #f5f3f8;
  --ink: #211b2a;
  --muted: #665f70;
  --line: #d4cedb;
  --accent: #7257a6;
  --accent-strong: #4f397a;
  --accent-soft: #e9e1f6;
}

body[data-theme="signal"] {
  --paper: #f7f4ef;
  --ink: #27201c;
  --muted: #6d625c;
  --line: #ded1c7;
  --accent: #b4572d;
  --accent-strong: #7d361b;
  --accent-soft: #f5dfd4;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 4%, var(--accent-soft), transparent 34rem),
    var(--paper);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

button,
input,
select {
  font: inherit;
}

.skip-link {
  position: fixed;
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  z-index: 20;
  transform: translateY(-200%);
  background: var(--ink);
  color: var(--paper);
  padding: 0.7rem 1rem;
  border-radius: 0.6rem;
}

.skip-link:focus {
  transform: none;
}

.shell {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  border-block-end: 1px solid var(--line);
  position: sticky;
  inset-block-start: 0;
  z-index: 10;
}

.header-row {
  min-height: 4.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  color: var(--ink);
  font-weight: 760;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.language-picker {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.language-picker select {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 0.65rem;
  padding: 0.5rem 0.65rem;
}

.prototype-banner {
  background: var(--ink);
  color: var(--paper);
  padding-block: 0.72rem;
  font-size: 0.92rem;
  font-weight: 680;
  text-align: start;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(17rem, 0.65fr);
  gap: clamp(2rem, 8vw, 7rem);
  align-items: center;
  min-height: 41rem;
  padding-block: clamp(3rem, 8vw, 7rem);
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 0.83rem;
  font-weight: 780;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.availability {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-block-end: 0.9rem;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.35rem 0.72rem;
  font-size: 0.82rem;
}

.availability::before {
  content: "";
  inline-size: 0.55rem;
  block-size: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
}

h1,
h2 {
  letter-spacing: -0.035em;
  line-height: 1.06;
}

h1 {
  max-width: 13ch;
  margin-block: 0.6rem 1.4rem;
  font-size: clamp(2.8rem, 7vw, 6.2rem);
}

h2 {
  margin-block: 0 1rem;
  font-size: clamp(1.7rem, 3.2vw, 2.6rem);
}

.summary {
  max-width: 44rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.promise-list,
.feature-list {
  list-style: none;
  padding: 0;
  margin-block: 1.6rem;
  display: grid;
  gap: 0.75rem;
}

.promise-list li,
.feature-list li {
  position: relative;
  padding-inline-start: 1.65rem;
}

.promise-list li::before,
.feature-list li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block-start: 0.62em;
  inline-size: 0.55rem;
  block-size: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
}

.primary-button {
  border: 0;
  border-radius: 0.85rem;
  background: var(--accent);
  color: #fff;
  padding: 0.9rem 1.2rem;
  font-weight: 760;
  cursor: pointer;
  box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 28%, transparent);
}

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

.primary-button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 55%, white);
  outline-offset: 3px;
}

.fine-print,
.context {
  color: var(--muted);
  font-size: 0.9rem;
}

.concept-card {
  position: relative;
  min-height: 24rem;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.concept-orbit {
  position: absolute;
  inline-size: min(100%, 24rem);
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 44% 56% 62% 38%;
  background: linear-gradient(145deg, var(--accent-soft), var(--card));
  box-shadow: var(--shadow);
  transform: rotate(-8deg);
}

.concept-panel {
  position: relative;
  inline-size: min(82%, 19rem);
  min-height: 12rem;
  display: grid;
  place-items: center;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  background: color-mix(in srgb, var(--card) 92%, transparent);
  color: var(--accent-strong);
  font-weight: 780;
  text-align: center;
  box-shadow: var(--shadow);
}

.section-band {
  background: color-mix(in srgb, var(--card) 72%, var(--paper));
  border-block: 1px solid var(--line);
  padding-block: clamp(3rem, 7vw, 5rem);
}

.two-column,
.form-grid,
.survey-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 7vw, 6rem);
  align-items: start;
}

.offer-section {
  padding-block: clamp(3rem, 7vw, 5.5rem);
}

.price-card {
  margin-block-start: 1.5rem;
  max-width: 44rem;
  border: 1px solid var(--line);
  border-inline-start: 0.45rem solid var(--accent);
  border-radius: 1.25rem;
  background: var(--card);
  padding: clamp(1.4rem, 4vw, 2.5rem);
  box-shadow: var(--shadow);
}

.price-label {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.price {
  display: block;
  margin-block: 0.3rem 0.7rem;
  font-size: clamp(2rem, 5vw, 3.8rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.form-grid,
.survey-layout {
  padding-block: clamp(3rem, 7vw, 5rem);
}

.lab-form {
  display: grid;
  gap: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--card);
  padding: clamp(1.25rem, 4vw, 2rem);
  box-shadow: var(--shadow);
}

.lab-form label,
.survey-question legend {
  font-weight: 720;
}

.lab-form input[type="email"],
.lab-form select {
  inline-size: 100%;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: var(--paper);
  color: var(--ink);
  padding: 0.8rem 0.9rem;
}

.check-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.check-row input {
  margin-block-start: 0.28rem;
  inline-size: 1rem;
  block-size: 1rem;
  accent-color: var(--accent);
}

.survey-question {
  border: 0;
  padding: 0;
  margin: 0 0 1.2rem;
}

.survey-question legend {
  margin-block-end: 0.5rem;
}

.form-status {
  min-height: 1.4rem;
  margin: 0;
  color: var(--accent-strong);
  font-weight: 680;
}

.site-footer {
  border-block-start: 1px solid var(--line);
  padding-block: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

[hidden] {
  display: none !important;
}

@media (max-width: 760px) {
  .hero,
  .two-column,
  .form-grid,
  .survey-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .concept-card {
    min-height: 18rem;
  }

  h1 {
    max-width: none;
  }
}

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


.footer-stack {
  display: grid;
  gap: 0.75rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
}

.footer-links a {
  color: var(--accent-strong);
  font-weight: 680;
}

.legal-page {
  min-height: 100vh;
}

.legal-shell {
  width: min(760px, calc(100% - 2rem));
  margin-inline: auto;
  padding-block: clamp(2rem, 7vw, 5rem);
}

.legal-card {
  border: 1px solid var(--line);
  border-inline-start: 0.4rem solid var(--accent);
  border-radius: 1.2rem;
  background: var(--card);
  padding: clamp(1.3rem, 5vw, 2.5rem);
  box-shadow: var(--shadow);
}

.legal-back {
  display: inline-block;
  margin-block-end: 1.2rem;
  color: var(--accent-strong);
  font-weight: 720;
}

.legal-body {
  white-space: pre-line;
}