/* Deducktive site. One stylesheet, no external requests.
   Palette sampled from the app icon (see site/README.md, "Palette"). */

/* Nunito, for headings, buttons and the wordmark. SIL Open Font License 1.1 (fonts/OFL.txt).
   Latin letters only, weights 600 to 900. Body text uses the visitor's system font. */
@font-face {
  font-family: "Nunito";
  font-style: normal;
  font-weight: 600 900;
  font-display: swap;
  src: url("fonts/nunito-latin-wght.woff2") format("woff2");
}

/* ---------- tokens ----------
   Values follow design/DESIGN_SPEC.md section 4.1 (the palette taken from the app icon).
   The spec name is given where the site token maps to one. */
:root {
  color-scheme: light dark;

  /* brand */
  --duck: #FDC837;            /* duck: the art and the answer highlight bar only */
  --amber: #EE9A14;           /* amber, panelAmber: decorative fills, never text */
  --amber-top: #F6AA1E;       /* top of the icon background */
  --amber-low: #E88C10;       /* bottom of the icon background */
  --brand: #A85005;           /* panelOrange (dark value, used in both themes so body text on it clears 5:1) */
  --indigo-panel: #2A2746;    /* panelIndigo */
  --lilac: #C9C6E8;           /* panelLilac */

  /* page */
  --canvas: #FBFAF7;          /* canvas */
  --ink: #1F1D33;             /* ink */
  --ink2: #47455E;            /* ink2 */
  --accent: #964700;          /* brandDeep: orange that is dark enough for text */
  --link: #44426F;            /* pond */
  --line: rgba(31, 29, 51, 0.14);
  --line-strong: #8A8799;     /* borderStrong */
  --focus: #44426F;

  --btn: #44426F;             /* pond */
  --btn-hover: #322E4B;       /* pondPressed */
  --on-btn: #FFFFFF;          /* onPond */
  --chip: #EE9A14;            /* numbered dots: amber fill, ink text */
  --on-chip: #1F1D33;

  /* glass */
  --glass-bg: rgba(255, 255, 255, 0.62);
  --glass-solid: #FFFFFF;     /* surface */
  --glass-line: rgba(255, 255, 255, 0.90);
  --glass-shine: rgba(255, 255, 255, 0.95);
  --glass-shadow: 0 22px 56px rgba(31, 29, 51, 0.10), 0 2px 8px rgba(31, 29, 51, 0.06);
  --glass-blur: blur(22px) saturate(1.5);
  --bar-bg: rgba(255, 255, 255, 0.80);
  --bar-solid: #FFFFFF;

  /* paper: the opaque surface used inside the product mock-ups (surface, never glass) */
  --paper: #FFFFFF;
  --paper-solid: #FFFFFF;
  --paper-ink: #1F1D33;
  --paper-ink2: #47455E;
  --paper-line: rgba(31, 29, 51, 0.14);
  --sunken: #F3F1EC;          /* sunken */
  --mark: #FFF3CC;            /* duckSoft */

  /* meaning. Warnings never borrow the brand orange or amber. */
  --stop: #A0222F;            /* danger */
  --stop-soft: #FBE7E8;       /* dangerSoft */
  --caution: #5F5200;         /* caution */
  --caution-soft: #FCF6BE;    /* cautionSoft */
  --caution-edge: #C9B100;    /* cautionEdge */
  --yes: #22693F;             /* safe */
  --yes-soft: #E3F1E7;        /* safeSoft */
  --no: #A0222F;
  --no-soft: #FBE7E8;

  --blob-a: rgba(238, 154, 20, 0.22);
  --blob-b: rgba(201, 198, 232, 0.60);
  --blob-c: rgba(184, 87, 4, 0.12);

  --r-xl: 40px;
  --r-lg: 28px;
  --r-md: 20px;
  --r-sm: 14px;

  --f-text: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --f-round: "Nunito", ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #161426;
    --ink: #F4F1EA;
    --ink2: #C5C3D6;
    --accent: #F4A55B;        /* brandDeep (dark) */
    --link: #B8B4EE;          /* pond (dark) */
    --line: rgba(255, 255, 255, 0.14);
    --line-strong: #8683A6;
    --focus: #B8B4EE;

    --btn: #B8B4EE;
    --btn-hover: #CAC7F5;
    --on-btn: #18162C;
    --chip: #DE8A10;
    --on-chip: #1F1D33;

    --glass-bg: rgba(255, 255, 255, 0.07);
    --glass-solid: #211E3A;   /* surface (dark) */
    --glass-line: rgba(255, 255, 255, 0.14);
    --glass-shine: rgba(255, 255, 255, 0.20);
    --glass-sheen: rgba(255, 255, 255, 0.07);
    --glass-shadow: 0 22px 56px rgba(0, 0, 0, 0.38), 0 2px 8px rgba(0, 0, 0, 0.25);
    --bar-bg: rgba(33, 30, 58, 0.80);
    --bar-solid: #211E3A;

    --paper: #2B2849;         /* raised */
    --paper-solid: #2B2849;
    --paper-ink: #F4F1EA;
    --paper-ink2: #C5C3D6;
    --paper-line: rgba(255, 255, 255, 0.12);
    --sunken: #1A1830;
    --mark: #40341A;          /* duckSoft (dark) */

    --stop: #DC4A58;          /* stopFill */
    --stop-soft: #421D29;
    --caution: #E9D84A;
    --caution-soft: #35320F;
    --caution-edge: #A99A00;
    --yes: #7CCF9B;
    --yes-soft: #17352B;
    --no: #F59AA2;            /* danger (dark) */
    --no-soft: #421D29;

    --blob-a: rgba(238, 154, 20, 0.08);
    --blob-b: rgba(179, 175, 221, 0.10);
    --blob-c: rgba(184, 87, 4, 0.10);
  }
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 104px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--f-text);
  font-size: 1.1875rem;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg { max-width: 100%; }
img { height: auto; display: block; }
h1, h2, h3, h4 { font-family: var(--f-round); color: var(--ink); margin: 0; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: var(--link); text-underline-offset: 3px; text-decoration-thickness: 1.5px; }
strong, b { font-weight: 650; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 10px; }

.vh { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.nw { white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -90px; z-index: 60; background: var(--btn); color: var(--on-btn); padding: 14px 22px; border-radius: 999px; font-weight: 600; text-decoration: none; }
.skip:focus { top: 14px; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.i { width: 22px; height: 22px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.i.fill { fill: currentColor; stroke: none; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
.narrow { max-width: 820px; }

/* ---------- glass ---------- */
.glass {
  position: relative;
  background-color: var(--glass-bg);
  background-image: linear-gradient(135deg, var(--glass-sheen, rgba(255, 255, 255, 0.22)), rgba(255, 255, 255, 0) 42%);
  border: 1px solid var(--glass-line);
  box-shadow: inset 0 1px 0 var(--glass-shine), var(--glass-shadow);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass { background-color: var(--glass-solid); background-image: none; }
  .bar.glass { background-color: var(--bar-solid); }
}
@media (prefers-reduced-transparency: reduce) {
  .glass { background-color: var(--glass-solid); background-image: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .bar.glass { background-color: var(--bar-solid); }
  .paper { background-color: var(--paper-solid); }
}

/* paper: mock-up surfaces. Always near opaque, so the words stay easy to read. */
.paper {
  --ink: var(--paper-ink);
  --ink2: var(--paper-ink2);
  --line: var(--paper-line);
  color: var(--ink);
  background-color: var(--paper);
  border: 1px solid var(--glass-line);
}

/* ---------- colour fields ----------
   The four art panels of the spec: amber, indigo, lilac and orange. */
.sheet { margin: 0 clamp(8px, 1.2vw, 16px); border-radius: clamp(26px, 3.6vw, 48px); overflow: clip; }
.field { position: relative; isolation: isolate; }

/* amber: the icon's own background */
.field-sun {
  --ink: #1F1D33;
  --ink2: #1F1D33;
  --accent: #1F1D33;
  --link: #1F1D33;
  --focus: #1F1D33;
  --glass-bg: rgba(255, 250, 240, 0.62);
  --glass-solid: #FFE6B8;
  --glass-line: rgba(255, 255, 255, 0.70);
  --glass-shadow: 0 22px 56px rgba(120, 52, 0, 0.22), 0 2px 8px rgba(120, 52, 0, 0.10);
  color: var(--ink);
  background:
    radial-gradient(46% 60% at 2% 104%, rgba(220, 116, 16, 0.95) 0%, rgba(220, 116, 16, 0) 72%),
    linear-gradient(172deg, #F6AA1E 0%, #EE9A14 46%, #E88C10 100%);
}

/* lilac */
.field-dawn {
  --ink2: #3D3B55;
  --accent: #1F1D33;
  --line: rgba(31, 29, 51, 0.18);
  --glass-bg: rgba(255, 255, 255, 0.52);
  --glass-solid: #ECEBF6;
  --glass-line: rgba(255, 255, 255, 0.80);
  --glass-shadow: 0 22px 56px rgba(42, 39, 70, 0.16), 0 2px 8px rgba(42, 39, 70, 0.08);
  background:
    radial-gradient(38% 44% at 96% 4%, rgba(238, 154, 20, 0.42) 0%, rgba(238, 154, 20, 0) 70%),
    radial-gradient(44% 50% at 0% 100%, rgba(255, 255, 255, 0.50) 0%, rgba(255, 255, 255, 0) 70%),
    linear-gradient(180deg, #D3D0EE 0%, #C9C6E8 100%);
}

/* indigo */
.field-night {
  --ink: #F4F1EA;
  --ink2: #DDDBEA;
  --accent: #F4A55B;
  --link: #CAC7F5;
  --line: rgba(255, 255, 255, 0.16);
  --line-strong: #A6A1C4;
  --focus: #CAC7F5;
  --btn: #B8B4EE;
  --btn-hover: #CAC7F5;
  --on-btn: #18162C;
  --glass-bg: rgba(52, 48, 90, 0.56);
  --glass-solid: #37345E;
  --glass-line: rgba(255, 255, 255, 0.20);
  --glass-shine: rgba(255, 255, 255, 0.30);
  --glass-sheen: rgba(255, 255, 255, 0.05);
  --glass-shadow: 0 24px 60px rgba(12, 10, 28, 0.40), 0 2px 8px rgba(12, 10, 28, 0.25);
  color: var(--ink);
  background:
    radial-gradient(44% 52% at 92% 4%, rgba(238, 154, 20, 0.26) 0%, rgba(238, 154, 20, 0) 70%),
    radial-gradient(40% 50% at 0% 100%, rgba(103, 99, 138, 0.60) 0%, rgba(103, 99, 138, 0) 70%),
    linear-gradient(165deg, #343058 0%, #2A2746 48%, #221F3A 100%);
}

/* orange: the warm brand colour */
.field-ember {
  --ink: #FFFFFF;
  --ink2: #FFFFFF;
  --accent: #FFFFFF;
  --link: #FFFFFF;
  --focus: #FFFFFF;
  --btn: #FFFFFF;
  --btn-hover: #FFF3E2;
  --on-btn: #5A2A00;
  --line: rgba(255, 255, 255, 0.26);
  --glass-bg: rgba(88, 40, 0, 0.32);
  --glass-blur: blur(22px) saturate(1.05);
  --glass-solid: #8F4300;
  --glass-line: rgba(255, 255, 255, 0.28);
  --glass-shine: rgba(255, 255, 255, 0.36);
  --glass-sheen: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 22px 56px rgba(70, 30, 0, 0.30);
  color: var(--ink);
  background:
    radial-gradient(50% 80% at 0% 100%, rgba(132, 62, 0, 0.90) 0%, rgba(132, 62, 0, 0) 70%),
    linear-gradient(160deg, #A85005 0%, #964700 100%);
}

/* soft colour behind the glass on the plain sections */
.field-plain::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(34% 22% at 92% 24%, var(--blob-a) 0%, transparent 70%),
    radial-gradient(36% 26% at 4% 52%, var(--blob-b) 0%, transparent 70%),
    radial-gradient(34% 18% at 86% 80%, var(--blob-c) 0%, transparent 70%);
}

@media (prefers-color-scheme: dark) {
  .field-sun {
    --ink: #F4F1EA;
    --ink2: #E4E1EE;
    --accent: #F4A55B;
    --link: #B8B4EE;
    --focus: #B8B4EE;
    --glass-bg: rgba(38, 35, 66, 0.58);
    --glass-solid: #2B2849;
    --glass-line: rgba(255, 255, 255, 0.16);
    --glass-shadow: 0 22px 56px rgba(0, 0, 0, 0.40);
    background:
      radial-gradient(46% 58% at 80% 34%, rgba(222, 138, 16, 0.55) 0%, rgba(222, 138, 16, 0) 70%),
      radial-gradient(40% 50% at 2% 100%, rgba(168, 80, 5, 0.42) 0%, rgba(168, 80, 5, 0) 72%),
      linear-gradient(172deg, #211E3A 0%, #161426 55%, #2A1A12 100%);
  }
  .field-dawn {
    --ink2: #C5C3D6;
    --accent: #F4A55B;
    --line: rgba(255, 255, 255, 0.14);
    --glass-bg: rgba(255, 255, 255, 0.07);
    --glass-solid: #332F5C;
    --glass-line: rgba(255, 255, 255, 0.14);
    --glass-shadow: 0 22px 56px rgba(0, 0, 0, 0.38), 0 2px 8px rgba(0, 0, 0, 0.25);
    background:
      radial-gradient(38% 44% at 96% 4%, rgba(222, 138, 16, 0.22) 0%, rgba(222, 138, 16, 0) 70%),
      radial-gradient(44% 50% at 0% 100%, rgba(179, 175, 221, 0.20) 0%, rgba(179, 175, 221, 0) 70%),
      linear-gradient(180deg, #2C2950 0%, #25224A 100%);
  }
  .field-night {
    --glass-bg: rgba(255, 255, 255, 0.07);
    --glass-solid: #2B2849;
    --glass-line: rgba(255, 255, 255, 0.14);
    --glass-shine: rgba(255, 255, 255, 0.20);
    --glass-sheen: rgba(255, 255, 255, 0.07);
    background:
      radial-gradient(44% 52% at 92% 4%, rgba(222, 138, 16, 0.18) 0%, rgba(222, 138, 16, 0) 70%),
      radial-gradient(40% 50% at 0% 100%, rgba(103, 99, 138, 0.40) 0%, rgba(103, 99, 138, 0) 70%),
      linear-gradient(165deg, #2C2950 0%, #211E3A 55%, #1A1830 100%);
  }
  .field-ember {
    --glass-bg: rgba(60, 26, 0, 0.34);
    --glass-solid: #7E3B03;
    background:
      radial-gradient(50% 80% at 0% 100%, rgba(120, 56, 2, 0.90) 0%, rgba(120, 56, 2, 0) 70%),
      linear-gradient(160deg, #A04C05 0%, #8A4104 100%);
  }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 56px; padding: 0 30px; border-radius: 999px; border: 0;
  font-family: var(--f-round); font-weight: 650; font-size: 1.125rem; line-height: 1.2;
  text-decoration: none; white-space: nowrap;
  transition: background-color 140ms ease-out, transform 140ms ease-out, box-shadow 140ms ease-out;
}
.btn-primary { background: var(--btn); color: var(--on-btn); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.16), 0 10px 24px rgba(31, 29, 51, 0.22); }
.btn-primary:hover { background: var(--btn-hover); }
.btn-glass { color: var(--ink); }
.btn-glass:hover { background-color: var(--glass-solid); }
.btn-sm { min-height: 48px; padding: 0 22px; font-size: 1.0625rem; }
.btn:focus-visible { border-radius: 999px; }
@media (prefers-reduced-motion: no-preference) { .btn:hover { transform: translateY(-1px); } }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 30; padding: 14px clamp(16px, 2.4vw, 32px) 0; margin-bottom: -78px; pointer-events: none; }
.bar {
  --ink: var(--bar-ink, #1F1D33);
  pointer-events: auto;
  max-width: 1180px; margin: 0 auto; min-height: 64px; padding: 0 10px 0 14px; border-radius: 999px;
  display: flex; align-items: center; gap: 20px;
  background-color: var(--bar-bg);
  --glass-shadow: 0 10px 30px rgba(36, 31, 59, 0.14), 0 1px 3px rgba(36, 31, 59, 0.08);
}
.wordmark { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding-right: 8px; font-family: var(--f-round); font-weight: 800; font-size: 1.375rem; letter-spacing: -0.01em; color: var(--ink); text-decoration: none; }
.wordmark picture, .hero-art picture { display: contents; }
.wordmark img { width: 44px; height: 44px; }
.site-nav { margin-left: auto; }
.bar > .btn { margin-left: auto; }
.site-nav + .btn { margin-left: 0; }
.site-nav ul { display: flex; gap: 2px; }
.site-nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 13px; border-radius: 999px; color: var(--ink); font-family: var(--f-round); font-size: 1.0625rem; font-weight: 700; text-decoration: none; }
.site-nav a:hover { background: var(--line); }
.bar .btn-primary { --btn: #44426F; --btn-hover: #322E4B; --on-btn: #FFFFFF; box-shadow: none; }
@media (prefers-color-scheme: dark) {
  .bar { --bar-ink: #F4F1EA; --glass-line: rgba(255, 255, 255, 0.14); --glass-shine: rgba(255, 255, 255, 0.18); --glass-sheen: rgba(255, 255, 255, 0.06); --glass-shadow: 0 10px 30px rgba(0, 0, 0, 0.40); }
  .bar .btn-primary { --btn: #B8B4EE; --btn-hover: #CAC7F5; --on-btn: #18162C; }
}

/* ---------- section scaffolding ---------- */
section { padding: 112px 0; }
.sheet + .sheet { margin-top: clamp(8px, 1.2vw, 16px); }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: var(--f-round); font-weight: 700; font-size: 1.0625rem; color: var(--accent); margin-bottom: 16px; }
.eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 3px; background: currentColor; opacity: 0.75; }
.h2 { font-size: clamp(2.125rem, 4vw, 3.125rem); line-height: 1.08; letter-spacing: -0.018em; font-weight: 800; }
.h3 { font-size: 1.5rem; line-height: 1.22; font-weight: 700; letter-spacing: -0.012em; }
.lead { font-size: 1.3125rem; line-height: 1.5; color: var(--ink2); margin-top: 20px; max-width: 38em; }
.sec-head { max-width: 800px; margin-bottom: 56px; }
.small { font-size: 1.125rem; line-height: 1.5; color: var(--ink2); }
.sub-h { font-size: 1.75rem; line-height: 1.18; font-weight: 750; letter-spacing: -0.016em; margin: 88px 0 12px; }
.sub-p { color: var(--ink2); max-width: 44em; margin-bottom: 30px; }

/* section head with one piece of duck art beside it */
.split { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 56px; align-items: center; margin-bottom: 64px; }
.split .sec-head { margin-bottom: 0; }
.art { width: 400px; max-width: 100%; }
.art img { width: 100%; filter: drop-shadow(0 24px 26px rgba(36, 31, 59, 0.24)); }

/* ---------- hero ---------- */
.hero { padding: 150px 0 64px; }
.hero.sheet, .lost.sheet { margin-left: 0; margin-right: 0; border-top-left-radius: 0; border-top-right-radius: 0; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr); gap: 48px; align-items: center; }
.status { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 18px 0 14px; border-radius: 999px; font-family: var(--f-round); font-weight: 650; font-size: 1.0625rem; color: var(--ink); margin-bottom: 26px; }
.status .dot { width: 10px; height: 10px; border-radius: 50%; background: #44426F; flex: none; }
.hero h1 { font-size: clamp(2.625rem, 5vw, 4.25rem); line-height: 1.04; letter-spacing: -0.022em; font-weight: 900; }
.hero h1 span { display: block; }
.hero h1 span + span { margin-top: 0.12em; }
.hero-sub { font-size: 1.375rem; line-height: 1.5; color: var(--ink); margin-top: 28px; max-width: 29em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.req { margin-top: 22px; font-size: 1.125rem; line-height: 1.5; color: var(--ink2); }

.hero-art { position: relative; display: grid; place-items: center; min-height: 500px; }
.ripples { position: absolute; left: 50%; top: 50%; width: 0; height: 0; z-index: 0; }
.ripples i { position: absolute; left: 0; top: 0; border-radius: 50%; transform: translate(-50%, -50%); border: 1.5px solid rgba(255, 255, 255, 0.62); background: rgba(255, 248, 232, 0.34); box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.5); }
.ripples i:nth-child(1) { width: 430px; height: 430px; }
.ripples i:nth-child(2) { width: 560px; height: 560px; border-color: rgba(255, 255, 255, 0.40); background: rgba(255, 248, 232, 0.16); box-shadow: none; }
.ripples i:nth-child(3) { width: 700px; height: 700px; border-color: rgba(255, 255, 255, 0.24); background: none; box-shadow: none; }
.hero-icon { position: relative; z-index: 1; width: 350px; height: 350px; filter: drop-shadow(0 34px 34px rgba(120, 52, 0, 0.30)); }
.chip { display: inline-flex; align-items: center; gap: 9px; min-height: 48px; padding: 0 18px 0 14px; border-radius: 999px; font-family: var(--f-round); font-weight: 650; font-size: 1.0625rem; color: var(--ink); white-space: nowrap; }
.chip .i { width: 21px; height: 21px; }
.hero-art .chip { position: absolute; z-index: 2; }
.hero-art .chip:nth-of-type(1) { left: -6px; top: 56px; }
.hero-art .chip:nth-of-type(2) { right: -10px; top: 216px; }
.hero-art .chip:nth-of-type(3) { left: 22px; bottom: 44px; }

@media (prefers-color-scheme: dark) {
  .status .dot { background: #B8B4EE; }
  .ripples i { border-color: rgba(255, 255, 255, 0.20); background: rgba(246, 170, 30, 0.16); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16); }
  .ripples i:nth-child(2) { border-color: rgba(255, 255, 255, 0.12); background: rgba(246, 170, 30, 0.07); box-shadow: none; }
  .ripples i:nth-child(3) { border-color: rgba(255, 255, 255, 0.07); background: none; }
  .hero-icon { filter: drop-shadow(0 34px 40px rgba(0, 0, 0, 0.55)); }
}

/* three promises */
.promises { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 72px; }
.promise { border-radius: var(--r-lg); padding: 28px 30px 30px; }
.promise h3 { font-size: 2rem; line-height: 1.05; letter-spacing: -0.022em; font-weight: 800; margin-bottom: 12px; display: flex; align-items: center; gap: 12px; }
.promise h3 .i { width: 28px; height: 28px; stroke-width: 2; }
.promise p { color: var(--ink2); font-size: 1.125rem; line-height: 1.52; }
.promise p + p { margin-top: 8px; }

/* ---------- what it does ---------- */
.duo { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; align-items: stretch; }
.demo { border-radius: var(--r-xl); padding: 34px 34px 38px; display: flex; flex-direction: column; gap: 26px; }
.demo-head .tag { font-family: var(--f-round); font-weight: 700; font-size: 1.0625rem; color: var(--accent); margin-bottom: 8px; }
.demo-head p:last-child { color: var(--ink2); margin-top: 10px; font-size: 1.125rem; line-height: 1.5; }
.demo-body { margin: auto 0; display: flex; flex-direction: column; gap: 16px; align-items: stretch; }

/* warning mock-up */
.warn {
  font-size: 16px; width: 100%; max-width: 31.5em; margin: 0 auto;
  border-radius: 1.75em;
  box-shadow: 0 30px 70px rgba(12, 10, 28, 0.34);
  padding: 1.3em 1.9em 1.25em; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 0.75em;
}
.warn-from { align-self: stretch; display: flex; align-items: center; gap: 0.5em; font-size: 0.9375em; line-height: 1.3; font-weight: 650; color: var(--ink2); }
.warn-from .sp { flex: 1; }
.warn-from .for { font-weight: 500; }
.warn .stop { width: 3.4em; height: 3.4em; color: var(--stop); flex: none; }
.warn-h { font-family: var(--f-round); font-weight: 750; font-size: 2em; line-height: 1.14; letter-spacing: -0.02em; color: var(--ink); text-wrap: balance; }
.warn-lead { font-size: 1.125em; line-height: 1.42; color: var(--ink); }
.warn-calm { font-size: 1em; line-height: 1.45; color: var(--ink2); }
.warn-actions { align-self: stretch; display: flex; flex-direction: column; gap: 0.6em; margin-top: 0.3em; }
.fbtn { display: flex; align-items: center; justify-content: center; gap: 0.5em; height: 3em; border-radius: 999px; font-family: var(--f-round); font-weight: 650; font-size: 1.0625em; color: var(--ink); }
.fbtn svg { width: 1.3em; height: 1.3em; }
.fbtn.primary { background: var(--mock-btn, #44426F); color: var(--mock-on-btn, #FFFFFF); }
.fbtn.outline { box-shadow: inset 0 0 0 1.5px var(--line-strong); }
.warn-foot { align-self: stretch; border-top: 1px solid var(--line); padding-top: 0.75em; display: flex; flex-direction: column; align-items: center; gap: 0.4em; }
.warn-quiet { font-size: 1em; font-weight: 500; color: var(--ink2); text-decoration: underline; text-underline-offset: 3px; }
.warn-note { font-size: 0.875em; line-height: 1.4; color: var(--ink2); }
@media (prefers-color-scheme: dark) {
  .paper { --line-strong: #8683A6; --mock-btn: #B8B4EE; --mock-on-btn: #18162C; --accent: #F4A55B; }
}
@media (prefers-color-scheme: light) {
  .paper { --line-strong: #8A8799; --accent: #964700; }
}

/* question and answer mock-ups */
.q { display: flex; align-items: center; gap: 12px; min-height: 58px; padding: 9px 22px; border-radius: 29px; font-family: var(--f-text); font-weight: 550; font-size: 1.125rem; line-height: 1.3; letter-spacing: 0; color: var(--ink); box-shadow: inset 0 0 0 2px var(--ink2); }
.q .i { color: var(--ink2); }
.ans { border-radius: 22px; padding: 22px; display: flex; flex-direction: column; gap: 14px; text-align: left; box-shadow: 0 18px 44px rgba(36, 31, 59, 0.12); }
.field-night .ans { box-shadow: 0 30px 70px rgba(12, 10, 28, 0.34); }
.ans-top { display: flex; align-items: center; justify-content: space-between; gap: 6px 12px; flex-wrap: wrap; font-size: 1rem; line-height: 1.3; color: var(--ink2); }
.ans-top b { font-weight: 700; }
.ans-top span { display: inline-flex; align-items: center; gap: 6px; }
.ans-top .i { width: 17px; height: 17px; }
.ans-val { font-family: var(--f-round); font-weight: 750; font-size: 2rem; line-height: 1.15; letter-spacing: -0.015em; color: var(--ink); }
.ans-val.long { font-size: 1.625rem; }
.ans-sub { color: var(--ink2); font-size: 1.0625rem; line-height: 1.45; margin-top: 4px; }
.prov { display: flex; gap: 12px; align-items: flex-start; background: var(--sunken); border-radius: 14px; padding: 12px 14px; }
.prov p { font-size: 1rem; line-height: 1.45; color: var(--ink2); }
.prov p.where { font-weight: 650; color: var(--ink); font-size: 1.0625rem; }
.appicon { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; flex: none; color: #fff; box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18); margin-top: 2px; }
.appicon .i { width: 62%; height: 62%; stroke-width: 2; }
.appicon.safari { background: linear-gradient(180deg, #41A6FF, #1B6FE0); }
.appicon.mail { background: linear-gradient(180deg, #5BB3FF, #1E79EA); }
.appicon.messages { background: linear-gradient(180deg, #62DB70, #27AE4A); }
.quote { margin: 0; padding: 2px 0 2px 14px; border-left: 3px solid var(--duck); color: var(--ink2); font-size: 1.0625rem; line-height: 1.5; }
.quote mark { background: var(--mark); color: var(--ink); padding: 1px 5px; border-radius: 6px; font-weight: 650; white-space: nowrap; }
.hid { background: var(--sunken); color: var(--ink2); padding: 1px 6px; border-radius: 6px; font-size: 0.9375em; white-space: nowrap; box-shadow: inset 0 0 0 1px var(--line); }

/* four steps */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin-top: 72px; counter-reset: step; }
.step { padding: 6px 28px 0; border-left: 1px solid var(--line); }
.step:first-child { padding-left: 0; border-left: 0; }
.step:last-child { padding-right: 0; }
.step-n { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--chip); color: var(--on-chip); font-family: var(--f-round); font-weight: 800; font-size: 1.125rem; margin-bottom: 16px; }
.step h3 { font-size: 1.3125rem; line-height: 1.25; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 1.125rem; line-height: 1.52; color: var(--ink2); }
.fine { margin-top: 48px; padding: 22px 26px; border-radius: var(--r-md); font-size: 1.125rem; line-height: 1.55; display: flex; gap: 16px; align-items: flex-start; color: var(--ink); }
.fine .i { color: var(--ink2); width: 26px; height: 26px; margin-top: 2px; }

/* ---------- scam protection ---------- */
.catch-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; align-items: stretch; }
.panel { border-radius: var(--r-xl); padding: 34px 36px 36px; }
.catch-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 26px; margin-top: 14px; }
.catch-list li { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-top: 1px solid var(--line); font-size: 1.125rem; line-height: 1.4; font-weight: 550; }
.catch-list li:nth-child(-n+2) { border-top: 0; }
.catch-list .i { color: var(--link); margin-top: 2px; }
.levels { display: grid; gap: 22px; margin-top: 20px; }
.level { display: flex; gap: 18px; align-items: flex-start; }
.level + .level { padding-top: 22px; border-top: 1px solid var(--line); }
.sign { width: 54px; height: 54px; border-radius: 16px; display: grid; place-items: center; flex: none; }
.sign svg { width: 30px; height: 30px; }
.sign.caution { background: var(--caution-soft); color: var(--caution); box-shadow: inset 0 0 0 1.5px var(--caution-edge); }
.sign.stopper { background: var(--stop-soft); color: var(--stop); }
.sign.stopper svg { width: 34px; height: 34px; }
.level h4 { font-size: 1.25rem; line-height: 1.3; font-weight: 700; margin-bottom: 4px; }
.level p { font-size: 1.125rem; line-height: 1.5; color: var(--ink2); }
.panel .small { margin-top: 22px; }

.examples { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.ex { border-radius: var(--r-lg); padding: 24px 26px 28px; display: flex; flex-direction: column; gap: 14px; }
.ex-kind { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 1rem; line-height: 1.35; color: var(--ink2); font-weight: 650; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.ex-kind span { font-weight: 500; white-space: nowrap; }
.ex .sign { width: 48px; height: 48px; }
.ex h4 { font-size: 1.625rem; line-height: 1.16; font-weight: 750; letter-spacing: -0.018em; }
.ex .do { font-size: 1.125rem; line-height: 1.45; color: var(--ink); }
.ex .calm { font-size: 1.125rem; line-height: 1.5; color: var(--ink2); }

.story { margin-top: 88px; padding: 48px; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: 56px; align-items: center; border-radius: var(--r-xl); }
.story h3 { font-size: 1.75rem; line-height: 1.18; font-weight: 750; letter-spacing: -0.016em; }
.story .intro { color: var(--ink2); margin-top: 12px; }
.story ol { margin-top: 26px; display: grid; gap: 0; counter-reset: s; }
.story li { counter-increment: s; display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 16px; padding: 16px 0; border-top: 1px solid var(--line); font-size: 1.125rem; line-height: 1.5; }
.story li::before { content: counter(s); display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; box-shadow: inset 0 0 0 1.5px var(--line-strong); font-family: var(--f-round); font-weight: 750; font-size: 1.0625rem; color: var(--ink); }
.story li:last-child::before { background: var(--chip); color: var(--on-chip); box-shadow: none; }
.story li em { font-style: normal; color: var(--ink2); }
.story .warn { font-size: 15.5px; padding-bottom: 1.7em; }

/* ---------- ask ---------- */
.asks { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; align-items: start; }
.ask { display: flex; flex-direction: column; gap: 16px; }
.ask h3 { margin: 0; }
.asks .q { min-height: 78px; text-wrap: pretty; }
.rules { margin-top: 48px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.rule { border-radius: var(--r-md); padding: 22px 24px; display: flex; gap: 14px; align-items: flex-start; font-size: 1.125rem; line-height: 1.5; color: var(--ink2); }
.rule .i { color: var(--link); margin-top: 3px; }
.rule b { color: var(--ink); font-weight: 650; }

/* ---------- privacy ---------- */
.ptable { width: 100%; border-collapse: separate; border-spacing: 0; border-radius: var(--r-xl); display: table; }
.ptable th, .ptable td { text-align: left; vertical-align: top; padding: 26px 32px; border-top: 1px solid var(--line); }
.ptable tr:first-child th, .ptable tr:first-child td { border-top: 0; }
.ptable th { width: 27%; font-family: var(--f-round); font-weight: 700; font-size: 1.25rem; line-height: 1.3; color: var(--ink); }
.ptable td { font-size: 1.125rem; line-height: 1.55; color: var(--ink); }
.ptable td p + p, .ptable td ul + p, .ptable td p + ul { margin-top: 10px; }
.ptable td ul { display: grid; gap: 6px; }
.ptable td li { position: relative; padding-left: 22px; }
.ptable td li::before { content: ""; position: absolute; left: 3px; top: 0.66em; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.ptable .two { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 28px; }
.ptable .muted { color: var(--ink2); }
.limits { margin-top: 24px; padding: 34px 36px; border-radius: var(--r-xl); }
.limits h3 { font-size: 1.5rem; line-height: 1.2; font-weight: 750; margin-bottom: 16px; display: flex; align-items: center; gap: 12px; }
.limits h3 .i { color: var(--ink2); width: 28px; height: 28px; }
.limits ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 40px; }
.limits li { position: relative; padding-left: 22px; font-size: 1.125rem; line-height: 1.5; color: var(--ink); }
.limits li::before { content: ""; position: absolute; left: 3px; top: 0.66em; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

/* ---------- control and consent ---------- */
.consent { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.consent li { border-radius: var(--r-lg); padding: 26px 26px 28px; }
.ic { width: 50px; height: 50px; border-radius: 15px; background: #44426F; color: #FFFFFF; display: grid; place-items: center; margin-bottom: 18px; }
.ic svg { width: 26px; height: 26px; }
.consent h3 { font-size: 1.25rem; line-height: 1.28; font-weight: 700; margin-bottom: 8px; text-wrap: pretty; }
.consent p { font-size: 1.125rem; line-height: 1.52; color: var(--ink2); }
.plain-line { margin-top: 28px; padding: 26px 30px; border-radius: var(--r-lg); font-size: 1.1875rem; line-height: 1.5; background: var(--indigo-panel); color: #F4F1EA; display: flex; gap: 16px; align-items: flex-start; }
.plain-line .i { color: #DDDBEA; width: 28px; height: 28px; margin-top: 1px; }
.plain-line strong { color: #FFFFFF; }
@media (prefers-color-scheme: dark) {
  .ic { background: #B8B4EE; color: #18162C; }
  .plain-line { background: #2C2950; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14); }
}

/* ---------- who it is for ---------- */
.who-h { font-size: 1.75rem; line-height: 1.18; font-weight: 750; letter-spacing: -0.016em; margin: 0 0 10px; }
.who-p { color: var(--ink2); max-width: 44em; margin-bottom: 28px; }
.modes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; align-items: stretch; margin-bottom: 80px; }
.mode { border-radius: var(--r-lg); padding: 28px 30px 30px; display: flex; flex-direction: column; gap: 10px; }
.mode h4 { font-size: 1.5rem; line-height: 1.2; font-weight: 750; }
.mode p { color: var(--ink2); font-size: 1.125rem; line-height: 1.52; }
.sample { margin-top: auto; border-radius: 16px; padding: 18px 20px; min-height: 104px; display: flex; flex-direction: column; justify-content: center; gap: 12px; }
.mode .sample { margin-top: 14px; }
.sample .s-text { font-weight: 550; }
.sample.simple .s-text { font-size: 1.4375rem; line-height: 1.35; }
.sample.everyday .s-text { font-size: 1.0625rem; line-height: 1.4; }
.sample .pill { align-self: flex-start; display: inline-flex; align-items: center; border-radius: 999px; background: var(--mock-btn, #44426F); color: var(--mock-on-btn, #FFFFFF); font-family: var(--f-round); font-weight: 650; }
.sample.simple .pill { height: 48px; padding: 0 26px; font-size: 1.125rem; }
.sample.everyday .pill { height: 34px; padding: 0 16px; font-size: 1rem; }

.fam { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; align-items: stretch; }
.fam-card { border-radius: var(--r-xl); padding: 34px 36px 36px; }
.fam-card h4 { font-size: 1.5rem; line-height: 1.2; font-weight: 750; margin-bottom: 20px; display: flex; align-items: center; gap: 12px; }
.tick { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; flex: none; }
.tick .i { width: 17px; height: 17px; stroke-width: 2.6; }
.tick.yes { background: var(--yes-soft); color: var(--yes); }
.tick.no { background: var(--no-soft); color: var(--no); }
.note { border-radius: 18px; padding: 18px 20px; }
.note .label { font-size: 1rem; font-weight: 650; color: var(--ink2); margin-bottom: 8px; }
.note .text { font-size: 1.125rem; line-height: 1.5; color: var(--ink); }
.note-cap { margin-top: 12px; font-size: 1.125rem; color: var(--ink2); }
.ticks { margin-top: 20px; display: grid; gap: 12px; }
.ticks.first { margin-top: 0; }
.ticks li { display: flex; gap: 12px; align-items: flex-start; font-size: 1.125rem; line-height: 1.5; }
.ticks .tick { width: 26px; height: 26px; margin-top: 1px; }
.ticks .tick .i { width: 15px; height: 15px; }

/* ---------- early access ---------- */
.early { padding: 0; }
.early-card { padding: 72px clamp(28px, 6vw, 88px); display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr); gap: 48px; align-items: center; }
.early-card h2 { font-size: clamp(2.125rem, 4vw, 3.125rem); line-height: 1.08; letter-spacing: -0.018em; font-weight: 900; }
.early-card p { margin-top: 18px; max-width: 34em; font-size: 1.25rem; line-height: 1.5; }
.facts { border-radius: var(--r-lg); padding: 10px 26px; }
.facts li { display: flex; gap: 14px; align-items: center; padding: 16px 0; font-size: 1.125rem; line-height: 1.4; font-weight: 550; color: var(--ink); }
.facts li + li { border-top: 1px solid rgba(255, 255, 255, 0.22); }
.facts .i { width: 24px; height: 24px; color: var(--accent); }

/* ---------- faq ---------- */
.faq { display: grid; gap: 14px; }
.faq details { border-radius: 22px; }
.faq summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 72px; padding: 14px 28px; font-family: var(--f-round); font-weight: 700; font-size: 1.3125rem; line-height: 1.3; border-radius: 22px; color: var(--ink); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .i { color: var(--link); transition: transform 200ms ease-in-out; width: 24px; height: 24px; }
.faq details[open] summary .i { transform: rotate(90deg); }
.faq .a { padding: 0 28px 26px; color: var(--ink2); max-width: 44em; }
.faq .a p + p { margin-top: 10px; }

/* ---------- closing ---------- */
.closing { padding: 24px 0 104px; text-align: center; }
.closing img { width: 168px; margin: 0 auto 18px; filter: drop-shadow(0 16px 18px rgba(36, 31, 59, 0.20)); }
.closing p { font-family: var(--f-round); font-weight: 750; font-size: 1.625rem; letter-spacing: -0.014em; color: var(--ink); }
.closing .btn { margin-top: 24px; }

/* ---------- footer ---------- */
.site-footer { margin-bottom: clamp(8px, 1.2vw, 16px); padding: 60px 0 64px; font-size: 1.125rem; line-height: 1.55; }
.site-footer .wrap { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.site-footer .wordmark { color: var(--ink); }
.site-footer .tag { margin-top: 8px; font-family: var(--f-round); font-weight: 700; color: var(--accent); font-size: 1.125rem; }
.site-footer p { color: var(--ink2); }
.site-footer p + p { margin-top: 8px; }
.foot-nav ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 20px; }
.foot-nav a { display: inline-flex; align-items: center; min-height: 48px; min-width: 48px; color: var(--ink); font-weight: 550; text-decoration: none; }
.foot-nav a:hover { text-decoration: underline; }

/* ---------- 404 ---------- */
.lost { min-height: 100vh; min-height: 100svh; border-radius: 0; display: grid; place-items: center; padding: 120px 0 72px; text-align: center; }
.lost-card { border-radius: var(--r-xl); padding: 44px clamp(24px, 5vw, 56px) 48px; max-width: 640px; margin: 0 auto; }
.lost-card img { width: 200px; margin: 0 auto 20px; filter: drop-shadow(0 20px 22px rgba(120, 52, 0, 0.26)); }
.lost-card h1 { font-size: clamp(2.25rem, 5vw, 3.25rem); line-height: 1.06; letter-spacing: -0.026em; font-weight: 800; }
.lost-card p { margin-top: 16px; font-size: 1.25rem; line-height: 1.5; color: var(--ink2); }
.lost-card .btn { margin-top: 30px; }

/* ---------- motion (optional) ---------- */
@media (prefers-reduced-motion: no-preference) {
  .hero-icon { animation: float 7s ease-in-out infinite; }
  @keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
  .reveal { transition: opacity 620ms ease-out, transform 620ms ease-out; }
  .reveal.pre { opacity: 0; transform: translateY(20px); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 1160px) {
  .site-nav { display: none; }
  .bar { justify-content: space-between; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 0; }
  .step:nth-child(3) { padding-left: 0; border-left: 0; }
  .step:nth-child(2) { padding-right: 0; }
  .examples, .asks { grid-template-columns: minmax(0, 1fr); max-width: 660px; }
  .rules { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .consent { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-art .chip:nth-of-type(1) { left: 0; }
  .hero-art .chip:nth-of-type(2) { right: 0; }
}
@media (max-width: 980px) {
  section { padding: 88px 0; }
  .hero { padding: 132px 0 48px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .hero-art { min-height: 0; padding: 64px 0 8px; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
  .hero-icon { width: 260px; height: 260px; flex: 0 0 auto; margin: 0 calc(50% - 130px) 44px; order: -1; }
  .ripples { top: 194px; }
  .ripples i:nth-child(1) { width: 330px; height: 330px; }
  .ripples i:nth-child(2) { width: 430px; height: 430px; background: none; }
  .ripples i:nth-child(3) { width: 540px; height: 540px; }
  .hero-art .chip { position: relative; left: auto !important; right: auto !important; top: auto !important; bottom: auto !important; }
  .promises { grid-template-columns: minmax(0, 1fr); margin-top: 44px; gap: 14px; }
  .duo, .catch-grid, .story, .fam, .modes { grid-template-columns: minmax(0, 1fr); }
  .split { grid-template-columns: minmax(0, 1fr); gap: 32px; margin-bottom: 48px; }
  .art { width: 300px; margin: 0 auto; order: -1; }
  .story { padding: 34px; gap: 36px; }
  .ptable, .ptable tbody, .ptable tr, .ptable th, .ptable td { display: block; width: 100%; }
  .ptable th { padding: 24px 26px 4px; }
  .ptable td { padding: 4px 26px 24px; border-top: 0; }
  .ptable tr + tr th { border-top: 1px solid var(--line); }
  .limits ul { grid-template-columns: minmax(0, 1fr); }
  .early-card { grid-template-columns: minmax(0, 1fr); padding-top: 56px; padding-bottom: 56px; gap: 32px; }
  .site-footer .wrap { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  body { font-size: 1.125rem; }
  .wrap { padding: 0 20px; }
  section { padding: 68px 0; }
  .site-header { padding: 10px 12px 0; margin-bottom: -68px; }
  .bar { min-height: 58px; gap: 10px; padding: 0 6px 0 8px; }
  .wordmark { font-size: 1.1875rem; gap: 6px; padding-right: 0; }
  .wordmark img { width: 40px; height: 40px; }
  .bar .btn-sm { padding: 0 16px; font-size: 1rem; min-height: 46px; }
  .hero { padding: 104px 0 28px; }
  .status { font-size: 1rem; margin-bottom: 20px; }
  .hero-sub { font-size: 1.1875rem; margin-top: 20px; }
  .hero-cta { margin-top: 28px; }
  .hero-cta .btn { flex: 1 1 100%; }
  .hero-art { padding-top: 52px; }
  .hero-icon { width: 220px; height: 220px; margin: 0 calc(50% - 110px) 38px; }
  .ripples { top: 162px; }
  .ripples i:nth-child(1) { width: 284px; height: 284px; }
  .ripples i:nth-child(2) { width: 372px; height: 372px; }
  .ripples i:nth-child(3) { width: 470px; height: 470px; }
  .field-plain::before {
    background:
      radial-gradient(90% 12% at 100% 14%, var(--blob-a) 0%, transparent 70%),
      radial-gradient(90% 14% at 0% 50%, var(--blob-b) 0%, transparent 70%),
      radial-gradient(90% 12% at 100% 84%, var(--blob-c) 0%, transparent 70%);
  }
  .chip { font-size: 1rem; min-height: 44px; padding: 0 14px 0 11px; }
  .promise { padding: 24px 22px 26px; }
  .lead { font-size: 1.1875rem; }
  .sec-head { margin-bottom: 40px; }
  .art { width: 240px; }
  .demo { padding: 24px 16px 20px; border-radius: var(--r-lg); }
  .demo-head { padding: 0 6px; }
  .warn { font-size: 14.5px; padding: 1.2em 1.15em 1.15em; }
  .warn-h { font-size: 1.75em; }
  .warn-from { font-size: 1em; }
  .warn-calm, .warn-quiet { font-size: 1.05em; }
  .warn-note { font-size: 1em; }
  .ans { padding: 18px; }
  .ans-val { font-size: 1.75rem; }
  .ans-val.long { font-size: 1.4375rem; }
  .q { padding: 9px 18px; }
  .steps { grid-template-columns: minmax(0, 1fr); gap: 0; margin-top: 52px; }
  .step, .step:nth-child(2), .step:last-child { padding: 24px 0; border-left: 0; border-top: 1px solid var(--line); }
  .step:first-child { border-top: 0; padding-top: 0; }
  .fine { padding: 20px; }
  .panel, .fam-card, .limits { padding: 26px 22px 28px; border-radius: var(--r-lg); }
  .catch-list { grid-template-columns: minmax(0, 1fr); }
  .catch-list li:nth-child(2) { border-top: 1px solid var(--line); }
  .story { padding: 26px 18px; border-radius: var(--r-lg); margin-top: 64px; }
  .story li { grid-template-columns: 38px minmax(0, 1fr); gap: 12px; }
  .story .warn { font-size: 14.5px; }
  .sub-h { margin-top: 64px; font-size: 1.5rem; }
  .who-h { font-size: 1.5rem; }
  .consent { grid-template-columns: minmax(0, 1fr); }
  .modes { margin-bottom: 60px; }
  .ptable { border-radius: var(--r-lg); }
  .ptable th { padding: 22px 22px 4px; }
  .ptable td { padding: 4px 22px 22px; }
  .ptable .two { grid-template-columns: minmax(0, 1fr); }
  .plain-line { padding: 22px; }
  .early-card { padding: 44px 22px; }
  .early-card p { font-size: 1.125rem; }
  .facts { padding: 6px 20px; }
  .faq summary { padding: 14px 20px; font-size: 1.1875rem; }
  .faq .a { padding: 0 20px 22px; }
  .closing { padding: 8px 0 72px; }
  .closing img { width: 140px; }
  .closing p { font-size: 1.375rem; }
}

@media (prefers-contrast: more) {
  :root { --line: var(--line-strong); --ink2: var(--ink); }
  .glass { background-color: var(--glass-solid); background-image: none; -webkit-backdrop-filter: none; backdrop-filter: none; border-color: var(--line-strong); }
  .bar.glass { background-color: var(--bar-solid); }
  .paper { background-color: var(--paper-solid); border-color: var(--line-strong); }
}
@media print {
  .site-header { position: static; margin-bottom: 0; }
  .reveal.pre { opacity: 1; transform: none; }
}