/* ==========================================================================
   OnlyOneTech - shared stylesheet (index, guides, privacy pages)
   Static, no build step. Mobile first. Light / dark / system themes.
   Concept: a developer's dot-grid notebook. Warm paper, ink text,
   one blue, and a single amber dot (the "only one").
   Sections
     1. Tokens (layout, color light, color dark x2)
     2. Base
     3. Layout primitives
     4. Components (skip link, header, buttons, badge, hero, cards, footer)
     5. Policy document page
     6. Utilities, reduced motion, print
     7. App guides, policy hub, per-app policy pages (appended last)
   ========================================================================== */

/* ---------- 1. Tokens: non-color ---------- */
:root {
  --font-sans: "Noto Sans KR", "Pretendard", system-ui, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Consolas, "Malgun Gothic", monospace;

  --fs-xs: 0.8125rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: clamp(1.125rem, 1.05rem + 0.4vw, 1.25rem);
  --fs-xl: clamp(1.5rem, 1.25rem + 1.2vw, 2rem);
  --fs-2xl: clamp(1.75rem, 1.4rem + 1.8vw, 2.5rem);
  --fs-hero: clamp(1.875rem, 1.4rem + 2.8vw, 3.5rem);
  --lh-tight: 1.25;
  --lh-snug: 1.4;
  --lh-body: 1.75;
  --lh-doc: 1.85;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-bold: 700;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --section-y: clamp(3rem, 2rem + 5vw, 6rem);
  --gutter: clamp(1rem, 0.5rem + 2.5vw, 2rem);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;

  --container: 68rem;
  --measure: 42rem;
  --header-h: 0rem;
  --tap: 2.75rem;

  --dur: 150ms;
  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);

  --z-header: 50;
  --z-skip: 100;

  /* logo mark: fixed in both themes */
  --mark-bg: #2456d8;
  --mark-fg: #ffffff;
  --mark-dot: #f5b23c;
}

/* ---------- 1. Tokens: color, light (default) ---------- */
:root {
  color-scheme: light dark;

  --color-bg: #f7f5ef;
  --color-surface: #ffffff;
  --color-surface-2: #eeebe2;
  --color-border: #ddd8ca;
  --color-border-strong: #7d7768;

  --color-text: #16181f;
  --color-text-muted: #55524a;

  --color-primary: #2456d8;
  --color-primary-hover: #1c44b0;
  --color-on-primary: #ffffff;
  --color-primary-soft: #e6ecff;
  --color-primary-text: #1c44b0;
  --color-focus: #1d4ed8;

  --color-dot: #ec9a10;

  --app-today-soft: #fff1d6;
  --app-today-text: #82440a;
  --app-today-accent: #c2620a;
  --app-fit-soft: #dcf3ec;
  --app-fit-text: #0b5c53;
  --app-fit-accent: #0f766e;

  --grid-dot: rgb(125 119 104 / 0.38);
  --glow-1: rgb(36 86 216 / 0.13);
  --glow-2: rgb(236 154 16 / 0.14);
  --header-bg: rgb(247 245 239 / 0.92);
  --shadow-sm: 0 1px 2px rgb(22 24 31 / 0.06), 0 1px 1px rgb(22 24 31 / 0.04);
  --shadow-md: 0 10px 30px -12px rgb(22 24 31 / 0.18), 0 2px 6px rgb(22 24 31 / 0.05);
}

/* ---------- 1. Tokens: color, dark (system preference) ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0e1118;
    --color-surface: #161b25;
    --color-surface-2: #1d2431;
    --color-border: #2c3546;
    --color-border-strong: #6d7a92;
    --color-text: #e9edf5;
    --color-text-muted: #a5afc2;
    --color-primary: #86abff;
    --color-primary-hover: #aac4ff;
    --color-on-primary: #0a1226;
    --color-primary-soft: #1b2746;
    --color-primary-text: #b9ccff;
    --color-focus: #aac4ff;
    --color-dot: #f5b23c;
    --app-today-soft: #2b2112;
    --app-today-text: #f6bf70;
    --app-today-accent: #f0a94a;
    --app-fit-soft: #0f2a2a;
    --app-fit-text: #6fdccb;
    --app-fit-accent: #46c4b1;
    --grid-dot: rgb(165 175 194 / 0.3);
    --glow-1: rgb(134 171 255 / 0.15);
    --glow-2: rgb(245 178 60 / 0.08);
    --header-bg: rgb(14 17 24 / 0.92);
    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.4);
    --shadow-md: 0 12px 32px -12px rgb(0 0 0 / 0.6);
  }
}

/* ---------- 1. Tokens: color, dark (manual choice) ---------- */
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #0e1118;
  --color-surface: #161b25;
  --color-surface-2: #1d2431;
  --color-border: #2c3546;
  --color-border-strong: #6d7a92;
  --color-text: #e9edf5;
  --color-text-muted: #a5afc2;
  --color-primary: #86abff;
  --color-primary-hover: #aac4ff;
  --color-on-primary: #0a1226;
  --color-primary-soft: #1b2746;
  --color-primary-text: #b9ccff;
  --color-focus: #aac4ff;
  --color-dot: #f5b23c;
  --app-today-soft: #2b2112;
  --app-today-text: #f6bf70;
  --app-today-accent: #f0a94a;
  --app-fit-soft: #0f2a2a;
  --app-fit-text: #6fdccb;
  --app-fit-accent: #46c4b1;
  --grid-dot: rgb(165 175 194 / 0.3);
  --glow-1: rgb(134 171 255 / 0.15);
  --glow-2: rgb(245 178 60 / 0.08);
  --header-bg: rgb(14 17 24 / 0.92);
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.4);
  --shadow-md: 0 12px 32px -12px rgb(0 0 0 / 0.6);
}

/* ---------- 2. Base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + var(--space-4));
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  color: var(--color-text);
  font: var(--fw-regular) var(--fs-base) / var(--lh-body) var(--font-sans);
  word-break: keep-all;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}
main { flex: 1 0 auto; min-width: 0; }
main:focus-visible { outline: none; } /* skip-link target only, not interactive */

h1, h2, h3, h4 { margin: 0; line-height: var(--lh-snug); text-wrap: balance; }
p { margin: 0; }
ul { margin: 0; padding: 0; }
img, svg { max-width: 100%; }
::selection { background: var(--color-primary-soft); color: var(--color-text); }

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}
a:hover { color: var(--color-primary-hover); }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

[hidden] { display: none !important; }

/* ---------- 3. Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--section-y); }
.section--alt {
  background: var(--color-surface-2);
  border-block: 1px solid var(--color-border);
}
.section__head { max-width: var(--measure); margin-bottom: var(--space-8); }
.section__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.02em;
  color: var(--color-primary-text);
  margin-bottom: var(--space-2);
}
.section__title { font-size: var(--fs-xl); font-weight: var(--fw-bold); line-height: 1.3; }
.section__lead { margin-top: var(--space-3); color: var(--color-text-muted); }

/* ---------- 4. Components ---------- */

/* skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: var(--space-2);
  z-index: var(--z-skip);
  background: var(--color-surface);
  color: var(--color-text);
  padding: var(--space-2) var(--space-4);
  border: 2px solid var(--color-focus);
  border-radius: var(--radius-md);
  font-weight: var(--fw-medium);
  text-decoration: none;
}
.skip-link:focus { left: var(--space-4); }

/* header */
.site-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas: "brand toggle" "nav nav";
  align-items: center;
  column-gap: var(--space-3);
  padding-block: var(--space-1);
}
.brand { grid-area: brand; }
.site-nav { grid-area: nav; min-width: 0; }
.theme-toggle { grid-area: toggle; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--tap);
  justify-self: start;
  color: var(--color-text);
  text-decoration: none;
  font-weight: var(--fw-bold);
  font-size: var(--fs-md);
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--color-text); }
.brand__mark { flex: none; }
.brand__mark rect { fill: var(--mark-bg); }
.brand__mark path { fill: none; stroke: var(--mark-fg); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.brand__mark circle { fill: var(--mark-dot); }

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-1);
  list-style: none;
  margin: 0 0 0 calc(-1 * var(--space-2));
  padding: 0;
}
.site-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tap);
  min-width: var(--tap);
  padding-inline: var(--space-2);
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: var(--fw-medium);
  border-bottom: 2px solid transparent;
  border-radius: 0;
}
.site-nav a:hover { color: var(--color-primary-text); border-bottom-color: var(--color-border-strong); }
.site-nav a[aria-current="page"] {
  font-weight: var(--fw-bold);
  color: var(--color-primary-text);
  border-bottom-color: var(--color-primary);
}

/* theme toggle: one cycle button (light / dark / system), current state shown by icon */
.theme-toggle {
  display: grid;
  place-items: center;
  width: var(--tap);
  height: var(--tap);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.theme-toggle:hover { background: var(--color-surface-2); color: var(--color-text); border-color: var(--color-border-strong); }
.theme-toggle:focus-visible { outline-offset: 2px; border-radius: var(--radius-pill); }
.theme-toggle__ico {
  display: none;
  grid-area: 1 / 1;
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.theme-toggle[data-state="light"] .theme-toggle__ico--light,
.theme-toggle[data-state="dark"] .theme-toggle__ico--dark,
.theme-toggle[data-state="system"] .theme-toggle__ico--system { display: block; }

@media (min-width: 40em) {
  :root { --header-h: 4rem; }
  .site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    -webkit-backdrop-filter: saturate(1.4) blur(8px);
    backdrop-filter: saturate(1.4) blur(8px);
  }
  .site-header__inner {
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas: "brand nav toggle";
    min-height: var(--header-h);
    column-gap: var(--space-6);
    padding-block: 0;
  }
  .site-nav__list { justify-content: flex-end; margin: 0; }
  .site-nav a { padding-inline: var(--space-3); }
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 var(--space-5);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font: inherit;
  font-weight: var(--fw-bold);
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn--primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn--primary:hover { background: var(--color-primary-hover); color: var(--color-on-primary); }
.btn--ghost { background: transparent; color: var(--color-text); border-color: var(--color-border-strong); }
.btn--ghost:hover { background: var(--color-surface-2); color: var(--color-text); }

/* badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  line-height: 1.4;
}
.badge__dot {
  flex: none;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--card-accent, var(--color-primary));
}
/* release-status badge: the key expectation-setting info, so slightly stronger than a plain badge */
.badge--status {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--card-accent, var(--color-border-strong));
  background: var(--card-soft, var(--color-surface-2));
  color: var(--card-text, var(--color-text));
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
}

/* hero */
.hero {
  position: relative;
  padding-block: var(--space-10) var(--section-y);
  background:
    radial-gradient(60% 50% at 88% 0%, var(--glow-1), transparent 70%),
    radial-gradient(40% 36% at 0% 58%, var(--glow-2), transparent 70%),
    var(--color-bg);
}
.hero__inner { display: grid; gap: var(--space-10); min-width: 0; }
.hero__copy { min-width: 0; }
.hero__eyebrow {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  margin-bottom: var(--space-5);
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-primary-text);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  line-height: 1.5;
}
.hero__title {
  font-size: var(--fs-hero);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
}
.hero__brand {
  color: var(--color-primary-text);
  white-space: nowrap;
}
.hero__brand::after {
  content: "";
  display: inline-block;
  width: 0.2em;
  height: 0.2em;
  margin-left: 0.07em;
  border-radius: 50%;
  background: var(--color-dot);
}
.hero__lead {
  margin-top: var(--space-5);
  max-width: 36rem;
  font-size: var(--fs-md);
  color: var(--color-text-muted);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); }

/* hero visual: one developer -> two apps (static, decorative) */
.hero__visual { min-width: 0; }
.orbit {
  position: relative;
  width: 100%; /* definite width: otherwise min-height + aspect-ratio would widen the box past 320px screens */
  aspect-ratio: 2 / 1;
  min-height: 10.5rem; /* keeps stacked app labels from colliding on 320px screens */
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle, var(--grid-dot) 1.1px, transparent 1.6px) 0 0 / 20px 20px,
    var(--color-surface);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.orbit__cap {
  position: absolute;
  left: var(--space-4);
  top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}
.orbit__lines { position: absolute; inset: 0; width: 100%; height: 100%; }
.orbit__lines path {
  fill: none;
  stroke: var(--color-border-strong);
  stroke-width: 1.5;
  stroke-dasharray: 3 6;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}
.orbit__node {
  position: absolute;
  width: 2.75rem;
  height: 2.75rem;
  transform: translate(-50%, -50%);
}
.orbit__node--brand { left: 24%; top: 50%; width: 3.5rem; height: 3.5rem; }
.orbit__node--today { left: 76%; top: 24%; }
.orbit__node--fit { left: 76%; top: 70%; }
.orbit__tile {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}
.orbit__node--today .orbit__tile { background: var(--app-today-soft); border-color: var(--app-today-accent); color: var(--app-today-text); }
.orbit__node--fit .orbit__tile { background: var(--app-fit-soft); border-color: var(--app-fit-accent); color: var(--app-fit-text); }
.orbit__node--brand .orbit__tile {
  border: 0;
  border-radius: 28%;
  background: var(--mark-bg);
}
.orbit__tile .pict { width: 58%; height: 58%; display: block; }
.orbit__node--brand .orbit__tile svg { width: 100%; height: 100%; display: block; }
.orbit__node--brand .orbit__tile svg path { fill: none; stroke: var(--mark-fg); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.orbit__node--brand .orbit__tile svg circle { fill: var(--mark-dot); }
.orbit__label {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: var(--space-1);
  white-space: nowrap;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  line-height: 1.3;
  color: var(--color-text-muted);
}

@media (min-width: 30em) {
  .orbit__node { width: 4rem; height: 4rem; }
  .orbit__node--brand { width: 4.5rem; height: 4.5rem; }
  .orbit__tile { border-radius: var(--radius-lg); }
}
@media (min-width: 40em) {
  .orbit__node { width: 5rem; height: 5rem; }
  .orbit__node--brand { width: 5.75rem; height: 5.75rem; }
}
@media (min-width: 60em) {
  .hero { padding-block: var(--space-16) var(--section-y); }
  .hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
    gap: var(--space-12);
  }
  .orbit { aspect-ratio: 5 / 4; }
}

/* app cards */
.app-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-5);
  grid-template-columns: minmax(0, 1fr);
}
.app-grid > li { min-width: 0; }
.app-card--today {
  --card-soft: var(--app-today-soft);
  --card-text: var(--app-today-text);
  --card-accent: var(--app-today-accent);
}
.app-card--fit {
  --card-soft: var(--app-fit-soft);
  --card-text: var(--app-fit-text);
  --card-accent: var(--app-fit-accent);
}
.app-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.app-card__cover {
  position: relative;
  height: 7rem;
  background: var(--card-soft);
  border-bottom: 1px solid var(--color-border);
}
.app-card__art { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.app-card__art .a { fill: var(--card-accent); }
.app-card__art .b { fill: var(--card-accent); opacity: 0.3; }
.app-card__art .r { fill: none; stroke: var(--card-accent); stroke-width: 1.5; opacity: 0.4; }
.app-card__art .s { fill: var(--card-accent); opacity: 0.16; }
.app-card__num {
  position: absolute;
  left: var(--space-6);
  top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  color: var(--card-text);
}
.app-card__icon {
  position: absolute;
  left: var(--space-6);
  bottom: -1.75rem;
  display: grid;
  place-items: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  color: var(--card-text);
}
.app-card__icon .pict { width: 1.75rem; height: 1.75rem; display: block; }
.app-card__body { padding: calc(1.75rem + var(--space-5)) var(--space-6) var(--space-6); }
.app-card__tagline {
  margin-bottom: var(--space-1);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--card-text);
}
.app-card__title { font-size: var(--fs-lg); font-weight: var(--fw-bold); margin-bottom: var(--space-2); }
.app-card__desc { color: var(--color-text-muted); }

/* keyword chips (only words taken from the app descriptions) */
.chip-list {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.chip {
  padding: 0.125rem var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--card-soft, var(--color-surface-2));
  color: var(--card-text, var(--color-text));
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  line-height: 1.6;
}
.app-card__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-3);
  margin-top: auto;
  padding: var(--space-3) var(--space-6);
  border-top: 1px solid var(--color-border);
}
.app-card__link {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
}
.app-card__link::after { content: "\2192"; margin-left: var(--space-1); text-decoration: none; display: inline-block; }

@media (min-width: 40em) {
  .app-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }
}

/* about: fact list */
.fact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}
.fact {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  min-width: 0;
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.fact__icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary-text);
}
.fact__icon svg {
  width: 1.5rem;
  height: 1.5rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.fact__title { font-size: var(--fs-base); font-weight: var(--fw-bold); margin-bottom: var(--space-1); }
.fact__text { font-size: var(--fs-base); color: var(--color-text-muted); }
@media (min-width: 60em) {
  .fact-list { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-6); }
  .fact { flex-direction: column; }
}

/* about: two blocks (operator info, privacy promises) */
.about-block + .about-block { margin-top: var(--space-10); }
.about-block__title { font-size: var(--fs-lg); font-weight: var(--fw-bold); }
.about-block__lead { margin-top: var(--space-1); color: var(--color-text-muted); }
.about-block__title + .info-list,
.about-block__title + .fact-list,
.about-block__lead + .fact-list { margin-top: var(--space-4); }

/* operator info: definition list */
.info-list {
  max-width: var(--measure);
  margin-bottom: 0;
  padding: var(--space-1) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.info-list__row { padding-block: var(--space-3); }
.info-list__row + .info-list__row { border-top: 1px solid var(--color-border); }
.info-list dt {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-muted);
}
.info-list dd { margin: 0; font-weight: var(--fw-medium); overflow-wrap: anywhere; }
@media (min-width: 30em) {
  .info-list__row {
    display: grid;
    grid-template-columns: 8.5rem minmax(0, 1fr);
    column-gap: var(--space-4);
    align-items: baseline;
  }
}

/* notice box: ad / analytics note, same visual weight as the promise cards */
.notice {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3) var(--space-4);
  align-items: start;
  margin-top: var(--space-6);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
}
.notice__icon {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary-text);
}
.notice__icon svg {
  width: 1.5rem;
  height: 1.5rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.notice__title { font-weight: var(--fw-bold); margin-bottom: var(--space-1); }
.notice__text { color: var(--color-text-muted); }
.notice__btn { grid-column: 1 / -1; justify-self: start; }
@media (min-width: 40em) {
  .notice { grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; }
  .notice__btn { grid-column: auto; justify-self: end; }
}

/* contact */
.contact-card {
  display: grid;
  gap: var(--space-4);
  max-width: var(--measure);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}
.contact-card__icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary-text);
}
.contact-card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.contact-card__label { font-size: var(--fs-sm); color: var(--color-text-muted); }
.contact-card__email {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  overflow-wrap: anywhere;
  word-break: break-all;
}
.contact-card__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.contact-card__hint { font-size: var(--fs-sm); color: var(--color-text-muted); }
.contact-card__status { font-size: var(--fs-sm); color: var(--color-text-muted); }
.contact-card__status:empty {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
@media (min-width: 30em) {
  .contact-card {
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: var(--space-5);
    align-items: center;
  }
  .contact-card__actions,
  .contact-card__hint,
  .contact-card__status { grid-column: 2; }
}

/* footer */
.site-footer {
  flex: none;
  padding-block: var(--space-12) var(--space-8);
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-border);
}
.site-footer__top { display: grid; gap: var(--space-6); }
.site-footer__about, .site-footer__links { min-width: 0; }
.site-footer__about p { margin-top: var(--space-2); font-size: var(--fs-sm); color: var(--color-text-muted); }
.site-footer__nav ul { list-style: none; margin: 0 0 0 calc(-1 * var(--space-2)); padding: 0; display: flex; flex-wrap: wrap; gap: 0 var(--space-2); }
.site-footer__nav a {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap);
  padding-inline: var(--space-2);
  font-size: var(--fs-sm);
}
.site-footer__contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}
.site-footer__contact a { display: inline-flex; align-items: center; min-height: var(--tap); overflow-wrap: anywhere; }
.site-footer__copy {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}
@media (min-width: 40em) {
  .site-footer__top { grid-template-columns: minmax(0, 1fr) auto; align-items: start; gap: var(--space-8); }
  .site-footer__nav ul { justify-content: flex-end; margin: 0 calc(-1 * var(--space-2)) 0 0; }
  .site-footer__contact { justify-content: flex-end; }
}

/* ---------- 5. Policy document page ---------- */
.doc-page { padding-block: var(--space-6) var(--section-y); }
.doc-layout { display: grid; gap: var(--space-8); min-width: 0; }
.doc { min-width: 0; }
.doc-toc { display: none; }

.back-link {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap);
  font-size: var(--fs-sm);
  text-decoration: none;
}
.back-link:hover { text-decoration: underline; }

.doc__header {
  padding-bottom: var(--space-6);
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}
.doc__title { font-size: var(--fs-2xl); font-weight: var(--fw-bold); line-height: var(--lh-tight); letter-spacing: -0.02em; }
.doc__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-4);
  margin-top: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}
.doc__meta-item { overflow-wrap: anywhere; }
.doc__intro { line-height: var(--lh-doc); max-width: var(--measure); }

/* mobile table of contents: a collapsible list with the full section titles
   (the always-visible desktop sidebar TOC takes over at 60em) */
.doc-toc-m { margin-top: var(--space-4); }
.doc-toc-m__box {
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
}
.doc-toc-m__summary {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--tap);
  padding: var(--space-2) var(--space-4);
  color: var(--color-primary-text);
  font-weight: var(--fw-bold);
  cursor: pointer;
  list-style: none;
}
.doc-toc-m__summary::-webkit-details-marker { display: none; }
.doc-toc-m__summary::after {
  content: "";
  flex: none;
  width: 0.55rem;
  height: 0.55rem;
  margin-top: -0.25rem;
  border-right: 2px solid var(--color-text-muted);
  border-bottom: 2px solid var(--color-text-muted);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}
.doc-toc-m__box[open] > .doc-toc-m__summary::after { margin-top: 0.25rem; transform: rotate(-135deg); }
.doc-toc-m__summary:focus-visible { border-radius: var(--radius-md); outline-offset: -3px; }
.doc-toc-m__count {
  margin-left: auto;
  font-size: var(--fs-sm);
  font-weight: var(--fw-regular);
  color: var(--color-text-muted);
}
.doc-toc-m__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
}
.doc-toc-m__list li + li { border-top: 1px solid var(--color-border); }
.doc-toc-m__list a {
  display: flex;
  align-items: center;
  min-height: var(--tap);
  padding: var(--space-2) var(--space-4);
  color: var(--color-text);
  font-size: 0.9375rem;
  line-height: 1.4;
  text-decoration: none;
}
.doc-toc-m__list a:hover { background: var(--color-primary-soft); color: var(--color-primary-text); }
.doc-toc-m__list a:focus-visible { border-radius: 0; outline-offset: -3px; }

/* summary: three core points, each linking to the full clause below */
.doc-summary {
  margin-top: var(--space-5);
  padding: var(--space-4) var(--space-4) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
}
.doc-summary__title { font-size: var(--fs-md); font-weight: var(--fw-bold); }
.doc-summary__list { list-style: none; margin: var(--space-2) 0 0; padding: 0; }
.doc-summary__list li + li { border-top: 1px solid var(--color-border); }
.doc-summary__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--tap);
  padding-block: var(--space-2);
  color: var(--color-text);
  font-size: 0.9375rem;
  line-height: 1.45;
  text-decoration: none;
}
.doc-summary__item:hover .doc-summary__text { text-decoration: underline; text-underline-offset: 0.2em; }
.doc-summary__check {
  flex: none;
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary-text);
}
.doc-summary__check svg {
  width: 1.125rem;
  height: 1.125rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.25;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.doc-summary__hint {
  margin-top: var(--space-1);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.doc-section {
  margin-top: var(--space-6);
  padding-block: var(--space-6) 0;
  border-top: 1px solid var(--color-border);
}
.doc-section h2 {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-3);
}
.doc-section p { line-height: var(--lh-doc); max-width: var(--measure); }
.doc-section h2:target { color: var(--color-primary-text); }

@media (min-width: 60em) {
  .doc-toc-m { display: none; }
  .doc-page { padding-top: var(--space-8); }
  .doc-layout {
    grid-template-columns: 13rem minmax(0, var(--measure));
    justify-content: center;
    gap: var(--space-12);
    align-items: start;
  }
  .doc-toc {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + var(--space-6));
    padding-top: var(--tap);
  }
  .doc-toc__title {
    margin-bottom: var(--space-3);
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-primary-text);
  }
  .doc-toc__list { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--color-border); }
  .doc-toc__list a {
    display: block;
    margin-left: -1px;
    padding: var(--space-2) var(--space-3);
    border-left: 2px solid transparent;
    border-radius: 0;
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
    text-decoration: none;
  }
  .doc-toc__list a:hover { color: var(--color-primary-text); border-left-color: var(--color-primary); }
}

/* ---------- 6. Utilities, reduced motion, print ---------- */
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

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

@media print {
  .site-header, .site-footer__nav, .theme-toggle, .skip-link, .doc-toc, .doc-toc-m, .back-link,
  .hero__visual, .hero__actions, .contact-card__actions, .contact-card__hint, .notice__btn { display: none !important; }
  body { background: #fff; color: #000; display: block; }
  a { color: inherit; }
  .doc-layout { display: block; }
  .hero, .section, .section--alt, .site-footer { background: #fff; padding-block: var(--space-4); }
}

/* ==========================================================================
   7. App guides, policy hub, per-app policy pages
      (ohneul-guide.html, workout-guide.html, privacy.html,
       privacy-ohneul.html, privacy-workout.html + home-page additions)
      Appended after the original sections; nothing above is changed.
   ========================================================================== */

/* 7.1 Per-app accent: same three variables the home app cards use */
.accent--today {
  --card-soft: var(--app-today-soft);
  --card-text: var(--app-today-text);
  --card-accent: var(--app-today-accent);
}
.accent--fit {
  --card-soft: var(--app-fit-soft);
  --card-text: var(--app-fit-text);
  --card-accent: var(--app-fit-accent);
}

/* 7.2 Real app icon (square image, rounded like a launcher icon) */
.app-icon {
  display: block;
  flex: none;
  object-fit: cover;
  border: 1px solid var(--color-border);
  border-radius: 22%;
  background: var(--color-surface-2);
  box-shadow: var(--shadow-sm);
}
.app-icon--md { width: 3.5rem; height: 3.5rem; }
.app-icon--xl { width: 4.5rem; height: 4.5rem; }

/* 7.3 Home: app card with real icon, guide button, per-app privacy block */
.app-card__icon--img { padding: 0; overflow: hidden; background: var(--color-surface-2); }
.app-card__icon--img img { display: block; width: 100%; height: 100%; object-fit: cover; }
.app-card__body { flex: 1 1 auto; }
.app-card__actions { padding: 0 var(--space-6) var(--space-5); }
.app-card__actions .btn { width: 100%; }

.info-list__links { list-style: none; margin: 0; padding: 0; }
.info-list__links li + li { margin-top: var(--space-1); }

.privacy-grid {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-5);
  grid-template-columns: minmax(0, 1fr);
}
.privacy-grid > li { min-width: 0; }
.privacy-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--card-accent);
  border-radius: var(--radius-lg);
}
.privacy-card__head { display: flex; align-items: center; gap: var(--space-3); }
.privacy-card__name { font-size: var(--fs-lg); font-weight: var(--fw-bold); }
.privacy-card__kind { font-size: var(--fs-sm); font-weight: var(--fw-medium); color: var(--card-text); }
.privacy-card .btn { margin-top: auto; align-self: flex-start; }
.privacy-card .check-list { margin-bottom: var(--space-5); }
@media (min-width: 48em) {
  .privacy-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }
}

.check-list { list-style: none; margin: var(--space-4) 0 0; padding: 0; display: grid; gap: var(--space-3); }
.check-list li { position: relative; padding-left: 1.875rem; color: var(--color-text-muted); }
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  width: 1.2rem;
  height: 1.2rem;
  border-radius: 50%;
  border: 1px solid var(--card-accent);
  background: var(--card-soft);
}
.check-list li::after {
  content: "";
  position: absolute;
  left: 0.43rem;
  top: 0.55em;
  width: 0.3rem;
  height: 0.55rem;
  border: solid var(--card-text);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* 7.4 Inline button names: [버튼 이름] written as a small label */
.ui-label {
  padding: 0.05em 0.32em;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface-2);
  color: var(--color-text);
  font-size: 0.94em;
  font-weight: var(--fw-medium);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

/* 7.5 Breadcrumbs */
.crumbs { font-size: var(--fs-sm); color: var(--color-text-muted); }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; align-items: center; }
.crumbs li + li::before { content: "\203A"; margin-inline: var(--space-2); }
.crumbs a { display: inline-flex; align-items: center; min-height: var(--tap); padding-inline: var(--space-2); }
.crumbs ol { margin-inline-start: calc(-1 * var(--space-2)); }
.crumbs [aria-current="page"] { color: var(--color-text); font-weight: var(--fw-medium); }

/* nav link for a page inside the current section (e.g. one app's policy) */
.site-nav a[aria-current="true"] { color: var(--color-primary-text); border-bottom-color: var(--color-border-strong); }

/* 7.6 Guide hero */
.guide-hero {
  padding-block: var(--space-2) var(--space-8);
  background:
    radial-gradient(60% 55% at 92% 0%, var(--card-soft), transparent 72%),
    radial-gradient(40% 36% at 0% 70%, var(--glow-2), transparent 70%),
    var(--color-bg);
}
.guide-hero__grid { display: grid; gap: var(--space-5); margin-top: var(--space-2); min-width: 0; }
.guide-hero__copy, .guide-hero__side { min-width: 0; }
.guide-hero__id { display: flex; align-items: center; gap: var(--space-4); }
.guide-hero__eyebrow {
  display: inline-block;
  margin-bottom: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--card-soft);
  color: var(--card-text);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  line-height: 1.5;
}
.guide-hero__title {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
}
.guide-hero__lead {
  margin-top: var(--space-4);
  max-width: 36rem;
  font-size: var(--fs-md);
  color: var(--color-text-muted);
}
.guide-hero__badges {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.guide-hero__note { margin-top: var(--space-3); font-size: var(--fs-sm); color: var(--color-text-muted); }
.guide-hero__side-title {
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--card-text);
}
.guide-facts { max-width: none; padding-block: 0; }
/* phones: label and value side by side, so the facts card is a compact table instead of a tall stack */
.guide-facts .info-list__row {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  column-gap: var(--space-3);
  align-items: baseline;
  padding-block: var(--space-2);
}
.guide-facts dd { font-size: 0.9375rem; }
@media (min-width: 30em) {
  .guide-facts .info-list__row { grid-template-columns: 10.5rem minmax(0, 1fr); }
}
.jump { margin-top: var(--space-8); }
.jump__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-2); }
/* section chips stay in view while reading a long guide (direct child of <main>, so sticky spans the whole page) */
html:has(.jump-bar) { --header-h: 3.75rem; }
@media (min-width: 40em) {
  /* same header height as the other pages, so the logo and nav do not shift between pages */
  html:has(.jump-bar) { --header-h: 4rem; }
}
.jump-bar {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--header-bg);
  border-block: 1px solid var(--color-border);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
/* From 52em the main header is sticky as well (see 7.14b), so the chips dock right under it instead of
   sliding over it. --header-h is the header's own height on guide pages; anchor jumps also clear the jump bar. */
@media (min-width: 52em) {
  html:has(.jump-bar) {
    --jump-h: 3.875rem;
    scroll-padding-top: calc(var(--header-h) + var(--jump-h) + var(--space-2));
  }
  .jump-bar { top: calc(var(--header-h) + 1px); }
}
.jump-bar .jump { margin-top: 0; padding-block: var(--space-2); }
.jump-bar .jump__list {
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.jump-bar .jump__list::-webkit-scrollbar { display: none; }
.jump-bar .jump__list li { flex: none; }
.jump-bar .jump__list a {
  min-height: var(--tap);
  padding-inline: var(--space-3);
  font-size: 0.875rem;
  white-space: nowrap;
}
.jump-bar .jump__list a:focus-visible { outline-offset: -3px; }
.jump__list a {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap);
  padding-inline: var(--space-4);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: var(--fw-medium);
  text-decoration: none;
}
.jump__list a:hover { background: var(--card-soft); border-color: var(--card-accent); color: var(--card-text); }
.jump__list a:focus-visible { border-radius: var(--radius-pill); }
@media (min-width: 40em) {
  .app-icon--xl { width: 6rem; height: 6rem; }
}
@media (min-width: 60em) {
  .guide-hero__grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); align-items: start; gap: var(--space-12); }
}

/* 7.7 Feature list */
.feature-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
}
.feature {
  min-width: 0;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--card-accent);
  border-radius: var(--radius-lg);
}
.feature__title { font-size: var(--fs-base); font-weight: var(--fw-bold); margin-bottom: var(--space-1); }
.feature__text { font-size: 0.9375rem; line-height: 1.7; color: var(--color-text-muted); }
@media (min-width: 40em) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); }
}

/* 7.8 Steps: phone = stack (title, screenshot, text); wide = image and text side by side, alternating */
.steps { list-style: none; margin: 0; padding: 0; }
.step {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: "head" "shot" "body";
  gap: var(--space-5);
  min-width: 0;
}
.step + .step {
  margin-top: var(--space-12);
  padding-top: var(--space-12);
  border-top: 1px dashed var(--color-border-strong);
}
.step__head { grid-area: head; display: flex; align-items: flex-start; gap: var(--space-3); min-width: 0; }
.step__num {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 2px solid var(--card-accent);
  border-radius: 50%;
  background: var(--card-soft);
  color: var(--card-text);
  font-family: var(--font-mono);
  font-size: 1.0625rem;
  font-weight: var(--fw-bold);
}
.step__title { padding-top: 0.2rem; font-size: var(--fs-lg); font-weight: var(--fw-bold); line-height: var(--lh-snug); }
.step__shot {
  grid-area: shot;
  /* phones: let the capture use almost the full screen width (>= 340px at 375px) so in-app labels stay readable */
  width: min(calc(100% + 2 * (var(--gutter) - 0.5rem)), 22.5rem);
  justify-self: center;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}
.step__shot img { display: block; width: 100%; height: auto; }
.step__zoom { position: relative; display: block; color: inherit; text-decoration: none; }
.step__zoom:focus-visible { outline-offset: -3px; border-radius: var(--radius-lg); }
.step__zoom-hint {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  line-height: 1.5;
  text-align: center;
}
.step__zoom:hover .step__zoom-hint { color: var(--color-text); }
.step__body { grid-area: body; min-width: 0; }
.step__list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-3); }
.step__list li { position: relative; padding-left: 1.25rem; }
.step__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--card-accent);
}
.step__note {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--card-soft);
  color: var(--card-text);
  font-size: 0.9375rem;
  line-height: 1.7;
}
@media (min-width: 48em) {
  .step {
    grid-template-columns: minmax(0, 21.5rem) minmax(0, 1fr);
    grid-template-rows: 1fr auto auto 1fr;
    grid-template-areas: "shot ." "shot head" "shot body" "shot .";
    column-gap: var(--space-10);
    row-gap: 0;
  }
  .step:nth-child(even) {
    grid-template-columns: minmax(0, 1fr) minmax(0, 21.5rem);
    grid-template-areas: ". shot" "head shot" "body shot" ". shot";
  }
  .step__head { margin-bottom: var(--space-4); }
  .step__shot { width: auto; justify-self: stretch; }
}
@media (min-width: 64em) {
  .step { grid-template-columns: minmax(0, 21.5rem) minmax(0, 1fr); column-gap: var(--space-12); }
  .step:nth-child(even) { grid-template-columns: minmax(0, 1fr) minmax(0, 21.5rem); }
}

/* 7.9 Tips */
.tip-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
  grid-template-columns: minmax(0, 1fr);
}
.tip {
  min-width: 0;
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.tip__tag {
  display: inline-block;
  margin-bottom: var(--space-2);
  padding: 0.125rem var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--card-soft);
  color: var(--card-text);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  line-height: 1.6;
}
.tip__title { margin-bottom: var(--space-2); font-size: var(--fs-md); font-weight: var(--fw-bold); line-height: var(--lh-snug); }
.tip p:not(.tip__tag) { font-size: 0.9375rem; line-height: 1.75; color: var(--color-text-muted); }
.tip p:not(.tip__tag) + p { margin-top: var(--space-3); }
.limit-list { max-width: none; margin-bottom: var(--space-3); padding: 0; border: 0; border-radius: 0; background: transparent; }
.limit-list .info-list__row { padding-block: var(--space-2); }
.limit-list dd { font-weight: var(--fw-regular); color: var(--color-text-muted); font-size: 0.9375rem; }
@media (min-width: 30em) {
  .limit-list .info-list__row { grid-template-columns: 12rem minmax(0, 1fr); }
}
@media (min-width: 48em) {
  .tip-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-5); }
  .tip--wide { grid-column: 1 / -1; }
}

/* 7.10 FAQ (details / summary) */
.faq { display: grid; gap: var(--space-3); max-width: 52rem; }
.faq__item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.faq__item:hover, .faq__item[open] { border-color: var(--color-border-strong); }
.faq__item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--tap);
  padding: var(--space-4) var(--space-5);
  font-weight: var(--fw-bold);
  line-height: var(--lh-snug);
  cursor: pointer;
  list-style: none;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "";
  flex: none;
  width: 0.55rem;
  height: 0.55rem;
  margin-top: 0.3rem;
  border-right: 2px solid var(--color-text-muted);
  border-bottom: 2px solid var(--color-text-muted);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}
.faq__item[open] summary::after { margin-top: 0.5rem; transform: rotate(-135deg); }
.faq__item summary:focus-visible { border-radius: var(--radius-lg); outline-offset: -3px; }
.faq__answer { padding: 0 var(--space-5) var(--space-5); color: var(--color-text-muted); }
.faq__answer p { max-width: var(--measure); }

/* 7.11 "More" link cards */
.more-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
  grid-template-columns: minmax(0, 1fr);
}
.more-grid > li { min-width: 0; }
.more-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  height: 100%;
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  text-decoration: none;
}
.more-card:hover { background: var(--color-surface-2); border-color: var(--color-border-strong); color: var(--color-text); }
.more-card:focus-visible { border-radius: var(--radius-lg); }
.more-card__label { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--color-text-muted); }
.more-card__title { font-size: var(--fs-md); font-weight: var(--fw-bold); line-height: var(--lh-snug); }
.more-card__title::after { content: "\2192"; margin-left: var(--space-1); }
.more-card__text { font-size: var(--fs-sm); color: var(--color-text-muted); }
@media (min-width: 48em) {
  .more-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-5); }
}

/* 7.12 Policy documents */
.doc__id { display: flex; align-items: center; gap: var(--space-4); }
.doc__id .doc__title { min-width: 0; }
.doc-list { max-width: var(--measure); margin: 0; padding-left: 1.25rem; line-height: var(--lh-doc); }
.doc-list li + li { margin-top: var(--space-2); }
.doc-section p + p,
.doc-section p + .doc-list,
.doc-section .doc-list + p { margin-top: var(--space-3); }
.doc-section strong { font-weight: var(--fw-bold); }
.doc-related { margin-top: var(--space-10); padding-top: var(--space-6); border-top: 1px solid var(--color-border); }
.doc-related__title { margin-bottom: var(--space-3); font-size: var(--fs-md); font-weight: var(--fw-bold); }
.doc-related__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-3); }
@media (min-width: 60em) {
  .doc-toc { max-height: calc(100vh - var(--header-h) - var(--space-8)); overflow-y: auto; }
}

/* 7.13 Policy hub (privacy.html) */
.hub { max-width: 54rem; }
.hub .doc__intro { max-width: var(--measure); }
.policy-grid {
  list-style: none;
  margin: var(--space-8) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-5);
  grid-template-columns: minmax(0, 1fr);
}
.policy-grid > li { min-width: 0; }
.policy-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  height: 100%;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--card-accent);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}
.policy-card__head { display: flex; align-items: center; gap: var(--space-4); }
.policy-card__name { font-size: var(--fs-lg); font-weight: var(--fw-bold); }
.policy-card__kind { font-size: var(--fs-sm); font-weight: var(--fw-medium); color: var(--card-text); }
.policy-card__summary { color: var(--color-text-muted); }
.policy-card__date { font-size: var(--fs-sm); color: var(--color-text-muted); }
.policy-card .btn { margin-top: auto; align-self: flex-start; }
.hub-contact { margin-top: var(--space-10); }
.hub-contact__title { margin-bottom: var(--space-3); font-size: var(--fs-lg); font-weight: var(--fw-bold); }
@media (min-width: 40em) {
  .policy-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }
}

/* 7.14 Footer: several link rows */
.site-footer__nav ul + ul { margin-top: 0; }

/* 7.14b Header: six links no longer fit one row between 40em and 52em, so keep the two-row (phone) layout there */
@media (min-width: 40em) and (max-width: 51.99em) {
  :root { --header-h: 0rem; }
  .site-header { position: static; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .site-header__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "brand toggle" "nav nav";
    min-height: 0;
    column-gap: var(--space-3);
    padding-block: var(--space-1);
  }
  .site-nav__list { justify-content: flex-start; margin: 0 0 0 calc(-1 * var(--space-3)); }
}

/* 7.15 Print (guide pages) */
@media print {
  .jump-bar, .jump, .more-grid, .doc-related, .app-card__actions, .crumbs { display: none !important; }
  .step { break-inside: avoid; }
  .step__shot { box-shadow: none; }
}