:root {
  color-scheme: light dark;
  --canvas: #f2f5f4;
  --canvas-strong: #e7edeb;
  --surface: rgba(252, 253, 252, 0.88);
  --surface-solid: #fbfcfb;
  --surface-muted: #e8efed;
  --ink: #102a2a;
  --ink-soft: #405655;
  --muted: #667977;
  --accent: #175f58;
  --accent-strong: #0c4a45;
  --accent-soft: #d8ebe6;
  --coral: #bd6f68;
  --line: rgba(20, 73, 68, 0.16);
  --line-strong: rgba(20, 73, 68, 0.30);
  --focus: #bd5148;
  --danger: #9a3b4f;
  --shadow: 0 32px 90px rgba(32, 73, 67, 0.15);
  --shadow-soft: 0 18px 48px rgba(32, 73, 67, 0.10);
  --radius-small: 10px;
  --radius-medium: 16px;
  --radius-large: 28px;
  --radius-shell: 34px;
  --content: 1180px;
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  --font-sans: "Avenir Next", "Segoe UI Variable", ui-sans-serif, system-ui, sans-serif;
  --font-display: "Avenir Next", "Segoe UI Variable", ui-sans-serif, system-ui, sans-serif;
}

:root[data-theme="dark"] {
  --canvas: #0c1716;
  --canvas-strong: #12211f;
  --surface: rgba(19, 35, 33, 0.90);
  --surface-solid: #142421;
  --surface-muted: #1b302c;
  --ink: #eef5f2;
  --ink-soft: #c5d5d1;
  --muted: #a8bbb6;
  --accent: #7bc0b3;
  --accent-strong: #a3d8ce;
  --accent-soft: #183e38;
  --coral: #e3a09a;
  --line: rgba(210, 239, 233, 0.14);
  --line-strong: rgba(210, 239, 233, 0.28);
  --focus: #ffaaa2;
  --danger: #ff9aad;
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.30);
  --shadow-soft: 0 18px 48px rgba(0, 0, 0, 0.22);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --canvas: #0c1716;
    --canvas-strong: #12211f;
    --surface: rgba(19, 35, 33, 0.90);
    --surface-solid: #142421;
    --surface-muted: #1b302c;
    --ink: #eef5f2;
    --ink-soft: #c5d5d1;
    --muted: #a8bbb6;
    --accent: #7bc0b3;
    --accent-strong: #a3d8ce;
    --accent-soft: #183e38;
    --coral: #e3a09a;
    --line: rgba(210, 239, 233, 0.14);
    --line-strong: rgba(210, 239, 233, 0.28);
    --focus: #ffaaa2;
    --danger: #ff9aad;
    --shadow: 0 32px 90px rgba(0, 0, 0, 0.30);
    --shadow-soft: 0 18px 48px rgba(0, 0, 0, 0.22);
  }
}

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

html { scroll-behavior: smooth; }

@view-transition { navigation: auto; }
::view-transition-old(root) { animation: 260ms var(--ease) both page-out; }
::view-transition-new(root) { animation: 520ms var(--ease) both page-in; }
@keyframes page-out { to { opacity: 0; transform: translateY(-8px) scale(0.995); } }
@keyframes page-in { from { opacity: 0; transform: translateY(12px) scale(0.995); } }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 86% 12%, color-mix(in srgb, var(--accent-soft) 72%, transparent), transparent 32rem),
    var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

body::after {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  content: "";
  opacity: 0.22;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.09'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

img { max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: 0.22em; text-decoration-thickness: 0.08em; }
button, summary { font: inherit; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

:target { scroll-margin-top: 7rem; }

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 30;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-small);
  background: var(--ink);
  color: var(--canvas);
  transform: translateY(-180%);
  transition: transform 220ms var(--ease);
}
.skip-link:focus { transform: translateY(0); }

.preview-bar {
  position: relative;
  z-index: 8;
  padding: 0.55rem 1rem;
  background: var(--accent-strong);
  color: var(--canvas);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.035em;
  text-align: center;
}

.site-header {
  position: sticky;
  top: 1rem;
  z-index: 20;
  width: min(calc(100% - 2rem), var(--content));
  margin: 1rem auto 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-solid) 84%, transparent);
  box-shadow: var(--shadow-soft), inset 0 1px color-mix(in srgb, var(--ink) 7%, transparent);
  backdrop-filter: blur(20px) saturate(130%);
  -webkit-backdrop-filter: blur(20px) saturate(130%);
}

.nav-shell {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 66px;
  padding: 0.45rem 0.55rem 0.45rem 0.7rem;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  text-decoration: none;
}
.brand img { width: 34px; height: 34px; border-radius: 9px; }

.desktop-nav { display: flex; justify-content: center; gap: 0.25rem; }
.desktop-nav a,
.locale-link,
.theme-toggle {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 280ms var(--ease), background-color 280ms var(--ease), transform 280ms var(--ease);
}
.desktop-nav a:hover,
.desktop-nav a[aria-current="page"],
.locale-link:hover { color: var(--ink); background: var(--surface-muted); }
.desktop-nav a:active,
.locale-link:active,
.theme-toggle:active { transform: scale(0.97); }

.nav-actions { display: flex; align-items: center; gap: 0.25rem; }
.theme-toggle {
  width: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.theme-toggle::before { content: "◐"; font-size: 1.15rem; }
.nav-menu { display: none; }

.shell { width: min(calc(100% - 2.5rem), var(--content)); margin-inline: auto; }

.hero {
  min-height: calc(100dvh - 108px);
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: clamp(1rem, 3vw, 2rem);
  margin-top: 1rem;
  padding: clamp(4rem, 9vw, 7rem) clamp(1.5rem, 5vw, 4rem) 0;
  overflow: hidden;
  border-radius: var(--radius-shell);
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent-soft) 72%, var(--surface-solid)), var(--canvas-strong));
  text-align: center;
}

.hero-copy { position: relative; z-index: 2; max-width: 900px; margin-inline: auto; }
.eyebrow {
  display: inline-flex;
  margin: 0 0 1.25rem;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, h3 { margin: 0; line-height: 1.06; text-wrap: balance; }
h1, h2 { font-family: var(--font-display); letter-spacing: -0.055em; }
h1 { max-width: 12ch; font-size: clamp(3.4rem, 7.2vw, 6.7rem); font-weight: 650; }
h2 { max-width: 13ch; font-size: clamp(2.5rem, 5vw, 4.7rem); font-weight: 650; }
h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); letter-spacing: -0.02em; }
.hero-copy h1, .hero-copy > p:not(.eyebrow) { margin-inline: auto; }
.hero-copy > p:not(.eyebrow) { max-width: 42rem; margin-top: 1.4rem; color: var(--ink-soft); font-size: clamp(1.05rem, 1.6vw, 1.25rem); }

.button-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.75rem; margin-top: 2rem; }
.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.38rem 0.4rem 0.38rem 1.2rem;
  border: 0;
  border-radius: 999px;
  background: var(--accent-strong);
  color: var(--canvas);
  font-weight: 750;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.2);
  transition: transform 420ms var(--ease), box-shadow 420ms var(--ease);
}
.button:hover { transform: translateY(-2px); box-shadow: 0 14px 30px color-mix(in srgb, var(--accent) 22%, transparent); }
.button:active { transform: scale(0.98); }
.button .button-mark {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--canvas) 14%, transparent);
  transition: transform 420ms var(--ease);
}
.button:hover .button-mark { transform: translate(2px, -1px); }
.button.secondary { background: var(--surface-muted); color: var(--ink); box-shadow: inset 0 0 0 1px var(--line); }

.hero-visual-shell {
  position: relative;
  width: min(100%, 720px);
  margin-inline: auto;
}
.cycle-stage {
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  min-height: clamp(180px, 20vw, 230px);
}
.hero-logo { display: block; width: min(34%, 132px); height: auto; filter: drop-shadow(0 22px 34px color-mix(in srgb, var(--accent-strong) 16%, transparent)); }
.hero-note {
  position: relative;
  z-index: 2;
  max-width: 26rem;
  margin: -1.5rem auto 2rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: color-mix(in srgb, var(--surface-solid) 92%, transparent);
  color: var(--ink-soft);
  box-shadow: var(--shadow-soft);
  font-size: 0.82rem;
  font-weight: 650;
  backdrop-filter: blur(12px);
}

.principles {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr 0.7fr;
  gap: 1px;
  margin-bottom: clamp(5rem, 10vw, 9rem);
  overflow: hidden;
  border-radius: var(--radius-large);
  background: var(--line);
  box-shadow: var(--shadow-soft);
}
.principle { min-height: 170px; padding: clamp(1.4rem, 3vw, 2.2rem); background: var(--surface-solid); }
.principle:first-child { background: var(--accent-strong); color: var(--canvas); }
.principle strong { display: block; max-width: 14ch; font-family: var(--font-display); font-size: clamp(1.5rem, 3vw, 2.35rem); line-height: 1.1; }
.principle span { display: block; margin-top: 0.75rem; color: var(--muted); }
.principle:first-child span { color: color-mix(in srgb, var(--canvas) 76%, transparent); }

.motion-rail { overflow: hidden; padding: clamp(1.4rem, 3vw, 2.2rem) 0; border-block: 1px solid var(--line); }
.motion-track { width: max-content; display: flex; align-items: center; animation: rail-slide 26s linear infinite; }
.motion-track span { display: inline-flex; align-items: center; gap: 2rem; padding-right: 2rem; color: var(--ink); font-size: clamp(1.45rem, 3vw, 2.7rem); font-weight: 650; letter-spacing: -0.04em; white-space: nowrap; }
.motion-track i { width: 9px; height: 9px; border-radius: 50%; background: var(--coral); }
@keyframes rail-slide { to { transform: translateX(-50%); } }

.section { padding-block: clamp(5rem, 10vw, 9rem); }
.section-heading { display: grid; gap: 1.25rem; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-heading p { max-width: 42rem; margin: 0; color: var(--ink-soft); font-size: 1.08rem; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}
.feature-shell {
  padding: 0.38rem;
  border-radius: var(--radius-large);
  background: color-mix(in srgb, var(--ink) 5%, transparent);
  box-shadow: inset 0 0 0 1px var(--line);
}
.feature-shell:nth-child(1) { grid-column: span 7; }
.feature-shell:nth-child(2) { grid-column: span 5; }
.feature-shell:nth-child(3) { grid-column: 3 / span 5; }
.feature-shell:nth-child(4) { grid-column: span 5; }
.feature {
  min-height: 270px;
  height: 100%;
  padding: clamp(1.5rem, 4vw, 2.8rem);
  border-radius: calc(var(--radius-large) - 6px);
  background: var(--surface-solid);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.5);
}
.feature-shell[data-motion-card] .feature { transform: translate3d(0, var(--card-shift, 0), 0); }
.feature-shell:nth-child(2) .feature { background: var(--accent-soft); }
.feature-shell:nth-child(3) .feature { background: color-mix(in srgb, var(--coral) 16%, var(--surface-solid)); }
.feature-index { color: var(--accent-strong); font-variant-numeric: tabular-nums; font-weight: 800; }
.feature h3 { margin-top: 3.6rem; }
.feature p { max-width: 31rem; margin: 0.8rem 0 0; color: var(--ink-soft); }

.privacy-manifesto {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 0.45fr);
  gap: clamp(2rem, 8vw, 8rem);
  padding: clamp(2rem, 6vw, 5rem);
  border-radius: var(--radius-shell);
  background: var(--accent-strong);
  color: var(--canvas);
}
.privacy-manifesto h2 { max-width: 12ch; }
.privacy-manifesto p { max-width: 38rem; color: color-mix(in srgb, var(--canvas) 76%, transparent); }
.privacy-manifesto > *, .manifesto-list { min-width: 0; }
.privacy-manifesto .button { max-width: 100%; white-space: normal; }
.manifesto-list { margin: 0; padding: 0; list-style: none; align-self: end; }
.manifesto-list li { padding: 1rem 0; border-bottom: 1px solid color-mix(in srgb, var(--canvas) 22%, transparent); font-weight: 700; }

.support-rail { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 1rem; }
.support-rail > * { padding: clamp(1.6rem, 4vw, 3.4rem); border-radius: var(--radius-large); }
.support-rail article { background: var(--surface-solid); box-shadow: var(--shadow-soft); }
.support-rail aside { background: var(--accent-soft); }
.support-rail p { color: var(--ink-soft); }

.page-hero { max-width: 900px; padding-block: clamp(5rem, 10vw, 9rem) clamp(3rem, 7vw, 6rem); }
.page-hero h1 { max-width: 12ch; font-size: clamp(3.2rem, 7vw, 6rem); }
.page-hero > p:last-child { max-width: 46rem; color: var(--ink-soft); font-size: 1.16rem; }

.prose-layout { display: grid; grid-template-columns: 230px minmax(0, 720px); gap: clamp(2rem, 7vw, 6rem); align-items: start; padding-bottom: 8rem; }
.toc { position: sticky; top: 7.5rem; padding: 1rem; border-radius: var(--radius-medium); background: var(--surface-muted); }
.toc strong { display: block; margin-bottom: 0.5rem; }
.toc a { display: block; min-height: 40px; padding: 0.45rem 0.25rem; color: var(--ink-soft); font-size: 0.9rem; text-decoration: none; }
.toc a:hover { color: var(--accent-strong); }
.prose { min-width: 0; }
.prose section { padding: 0 0 3rem; }
.prose h2 { max-width: none; font-family: var(--font-sans); font-size: clamp(1.55rem, 3vw, 2rem); letter-spacing: -0.025em; }
.prose h3 { margin-top: 2rem; }
.prose p, .prose li { color: var(--ink-soft); }
.prose ul { padding-left: 1.25rem; }
.prose a { color: var(--accent-strong); font-weight: 700; }
.review-note, .safety-note {
  margin: 0 0 2rem;
  padding: 1.1rem 1.2rem;
  border-left: 4px solid var(--coral);
  border-radius: 0 var(--radius-medium) var(--radius-medium) 0;
  background: color-mix(in srgb, var(--coral) 13%, var(--surface-solid));
  color: var(--ink-soft);
}
.safety-note { border-color: var(--accent); background: var(--accent-soft); }

.faq-list { display: grid; gap: 0.85rem; }
.faq-list details { border-radius: var(--radius-medium); background: var(--surface-solid); box-shadow: inset 0 0 0 1px var(--line); }
.faq-list summary { min-height: 56px; padding: 1rem 3rem 1rem 1.1rem; font-weight: 750; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { float: right; margin-right: -2rem; content: "+"; color: var(--accent-strong); font-size: 1.25rem; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: 0; padding: 0 1.1rem 1.2rem; color: var(--ink-soft); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; padding-bottom: 8rem; }
.contact-card { padding: clamp(1.5rem, 4vw, 3rem); border-radius: var(--radius-large); background: var(--surface-solid); box-shadow: var(--shadow-soft); }
.contact-card:nth-child(2) { background: var(--accent-soft); }
.contact-card a { display: inline-block; margin-top: 1rem; color: var(--accent-strong); font-size: 1.15rem; font-weight: 800; overflow-wrap: anywhere; }
.contact-status { display: inline-flex; margin-top: 1rem; padding: 0.7rem 0.9rem; border-radius: 999px; background: var(--surface-muted); color: var(--ink-soft); font-size: 0.9rem; font-weight: 750; }

.site-footer { padding: 2rem 0 3rem; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.8fr 0.8fr; gap: 2rem; }
.footer-grid p { max-width: 24rem; color: var(--muted); }
.footer-links { display: grid; align-content: start; gap: 0.45rem; }
.footer-links strong { margin-bottom: 0.4rem; }
.footer-links a { min-height: 34px; color: var(--ink-soft); text-decoration: none; }
.footer-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; margin-top: 2.5rem; color: var(--muted); font-size: 0.82rem; }

[data-reveal] { opacity: 0; transform: translateY(30px); }
[data-reveal][data-visible="true"] { opacity: 1; transform: translateY(0); transition: opacity 800ms var(--ease), transform 800ms var(--ease); }
:root[data-evidence="true"] .motion-track { animation: none; transform: translateX(0); }
:root[data-evidence="true"] [data-motion-card] .feature,
:root[data-evidence="true"] [data-scroll-hero] .hero-copy,
:root[data-evidence="true"] [data-scroll-hero] .hero-visual-shell { transform: none !important; opacity: 1 !important; }

@media (max-width: 900px) {
  .desktop-nav { display: none; }
  .nav-shell { grid-template-columns: auto 1fr auto; }
  .nav-actions { justify-self: end; }
  .nav-menu { display: block; position: relative; }
  .nav-menu summary { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; cursor: pointer; list-style: none; }
  .nav-menu summary::-webkit-details-marker { display: none; }
  .nav-menu summary::before { content: "≡"; font-size: 1.35rem; }
  .nav-menu[open] summary::before { content: "×"; }
  .mobile-panel { position: absolute; top: calc(100% + 0.8rem); right: 0; min-width: 230px; padding: 0.6rem; border: 1px solid var(--line); border-radius: var(--radius-medium); background: var(--surface-solid); box-shadow: var(--shadow); }
  .mobile-panel a { min-height: 46px; display: flex; align-items: center; padding: 0.65rem 0.8rem; border-radius: var(--radius-small); text-decoration: none; }
  .mobile-panel a:hover { background: var(--surface-muted); }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { padding-top: 2rem; }
  .hero-visual-shell { transform: none; }
  .principles { grid-template-columns: 1fr; }
  .feature-shell, .feature-shell:nth-child(1), .feature-shell:nth-child(2), .feature-shell:nth-child(3), .feature-shell:nth-child(4) { grid-column: 1 / -1; }
  .privacy-manifesto, .support-rail, .prose-layout, .contact-grid { grid-template-columns: 1fr; }
  .toc { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .shell { width: min(calc(100% - 2rem), var(--content)); }
  .site-header { width: calc(100% - 1rem); top: 0.5rem; }
  .nav-shell { gap: 0.35rem; padding-left: 0.5rem; }
  .brand span { font-size: 1.3rem; }
  .locale-link { padding-inline: 0.65rem; }
  h1 { font-size: clamp(3.15rem, 16vw, 4.8rem); }
  .hero { padding-block: 2rem 4.5rem; }
  .hero-copy > p:not(.eyebrow) { font-size: 1rem; }
  .button-row { align-items: stretch; flex-direction: column; }
  .button { justify-content: space-between; width: 100%; }
  .privacy-manifesto .button { padding-left: 0.9rem; }
  .privacy-manifesto .button .button-mark { flex: 0 0 38px; }
  .hero-note { position: static; max-width: none; margin-top: 0.6rem; }
  .principle { min-height: 140px; }
  .feature { min-height: auto; }
  .feature h3 { margin-top: 2rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > :first-child { grid-column: auto; }
}

@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; }
  [data-reveal] { opacity: 1; transform: none; }
  .motion-track { animation: none; }
  .feature-shell[data-motion-card] .feature, [data-scroll-hero] .hero-copy, [data-scroll-hero] .hero-visual-shell { transform: none !important; opacity: 1 !important; }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header, .hero-note { background: var(--surface-solid); backdrop-filter: none; -webkit-backdrop-filter: none; }
}

@media print {
  .preview-bar, .site-header, .toc, .site-footer { display: none; }
  body { background: #fff; color: #111; }
  .prose-layout { display: block; }
  .prose p, .prose li { color: #222; }
}