/* Ocren — https://ocren.info
   The app's "Shosai" look: a walnut wood band on top, cream paper below.
   Colours match the app's Shosai theme
   (Wood / OnWood / Amber are fixed; Paper follows light/dark).
   System fonts only: Didot for the wordmark, Iowan Old Style (en) and
   Hiragino Mincho (ja) for text, with fallbacks for other platforms. */

:root {
  /* WOOD (fixed) */
  --wood-deep: #150B05;
  --wood-wall: #2E1B10;
  --wood-header: #1F130C;
  --wood-bar: #120B06;
  --wood-rule: #3D2A1A;
  --wood-field: #241810;
  --on-wood: #E7DDCE;
  --on-wood-2: #B9A78C;
  --on-wood-3: #9C8A70;
  --amber: #D68F41;
  --amber-bright: #E9B85A;
  --amber-deep: #B9832E;
  --on-amber: #150B05;

  /* PAPER (light) */
  --ground: #F4EFE5;
  --card: #FBF8F1;
  --card-pressed: #F0E9DC;
  --rule: #DDD3C2;
  --field: #ECE5D8;
  --ink: #2A211B;
  --ink-2: #6A5B4C;
  --ink-3: #776957;
  --brass-ink: #806028;
  --brass: #B07A1F;
  --brass-soft: #F1E6CF;
  --on-brass: #FFF9EE;
  --signal: #387043;
  --alert: #A8382C;
  --shadow: rgba(0, 0, 0, .12);
  --grain-opacity: .06;

  /* Type */
  --wordmark: Didot, "Bodoni 72", "Bodoni MT", "Bodoni Moda", "Libre Bodoni", "Playfair Display", Georgia, serif;
  --mincho: "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Yu Mincho", YuMincho, "Noto Serif JP", "Noto Serif CJK JP", "Source Han Serif JP", serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, var(--mincho);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --measure: 42rem;
  --page: 72rem;
  --radius: 14px;
  color-scheme: light dark;
}

:lang(ja) { --serif: var(--mincho); }

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #1B1410;
    --card: #241C16;
    --card-pressed: #2C231C;
    --rule: #3A2E24;
    --field: #2A211A;
    --ink: #EFE5D2;
    --ink-2: #B6A58D;
    --ink-3: #948470;
    --brass-ink: #E0AC4A;
    --brass: #D9A441;
    --brass-soft: #3A2C18;
    --on-brass: #1B1208;
    --signal: #7FC08A;
    --alert: #E4746A;
    --shadow: rgba(0, 0, 0, .5);
    --grain-opacity: .04;
  }
}

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

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 1rem; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.75;
  overflow-wrap: break-word;
  position: relative;
}
:lang(ja) body, body:lang(ja) { line-height: 1.9; font-size: 1rem; }

/* paper tooth, as in the app (PaperGrain at 6 %) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: url("grain.jpg") repeat;
  background-size: 256px 256px;
  opacity: var(--grain-opacity);
  pointer-events: none;
  z-index: 0;
}
body > * { position: relative; z-index: 1; }

img { max-width: 100%; height: auto; display: block; }
figure { margin: 0; min-width: 0; }

a { color: var(--brass-ink); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  /* brass ink on paper (5:1 light, 8:1 dark); amber on the wood below */
  outline: 3px solid var(--brass-ink);
  outline-offset: 3px;
  border-radius: 4px;
}
.wood :focus-visible, .site-foot :focus-visible, .skip:focus-visible { outline-color: var(--amber); }

.skip {
  position: absolute; left: 1rem; top: -4rem; z-index: 10;
  background: var(--amber); color: var(--on-amber); padding: .5rem .9rem; border-radius: 8px;
  font-weight: 700; text-decoration: none;
}
.skip:focus { top: 1rem; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- WOOD: header band ---------- */

.wood {
  background-color: var(--wood-wall);
  background-image:
    linear-gradient(180deg, rgba(21, 11, 5, .25), rgba(21, 11, 5, 0) 45%, rgba(21, 11, 5, .45)),
    url("wood.jpg");
  background-size: auto, 512px 512px;
  color: var(--on-wood);
}
.wood a { color: var(--on-wood); }

.site-head { border-bottom: 1px solid var(--wood-deep); box-shadow: 0 1px 0 var(--wood-rule) inset; }
.site-head .inner {
  max-width: var(--page);
  margin: 0 auto;
  padding: .9rem 1rem .25rem;
}
.head-row {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}

.wordmark {
  font-family: var(--wordmark);
  font-size: 2rem;
  line-height: 1;
  letter-spacing: .01em;
  font-weight: 400;
  text-decoration: none;
  color: var(--on-wood);
}
.wordmark:hover { color: #fff; }

.lang {
  display: flex; gap: .25rem;
  font-size: .875rem;
  font-family: var(--serif);
}
.lang a {
  text-decoration: none;
  color: var(--on-wood-2);
  padding: .3rem .6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.lang a:hover { color: var(--on-wood); border-color: var(--wood-rule); }
.lang a[aria-current="page"] {
  color: var(--on-wood);
  background: var(--wood-field);
  border-color: var(--wood-rule);
}
.lang .ja { font-family: var(--mincho); }
.lang .en { font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; }

.primary-nav ul {
  list-style: none; margin: .6rem 0 0; padding: 0;
  display: flex; flex-wrap: wrap; align-items: center; gap: .1rem 1.1rem;
}
.primary-nav a {
  display: inline-block;
  padding: .45rem 0 .55rem;
  font-size: .95rem;
  color: var(--on-wood-2);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}
.primary-nav a:hover { color: var(--on-wood); }
.primary-nav a[aria-current="page"] { color: var(--on-wood); border-bottom-color: var(--amber); }
.primary-nav .store-item { margin-left: auto; }
.primary-nav .store-item a {
  color: var(--on-amber); border: 0; padding: .35rem .9rem; border-radius: 999px;
  background: linear-gradient(180deg, var(--amber-bright), var(--amber));
  font-weight: 700; font-size: .875rem;
}
.primary-nav .store-item a:hover { filter: brightness(1.05); color: var(--on-amber); }

/* ---------- Buttons ---------- */

.btn-store {
  display: inline-flex; align-items: center; gap: .6rem;
  padding: .85rem 1.4rem;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--amber-bright), var(--amber) 60%, var(--amber-deep));
  color: var(--on-amber) !important;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(255, 196, 107, .18), 0 1px 0 rgba(255, 255, 255, .35) inset;
}
.btn-store:hover { filter: brightness(1.05); }
.btn-store .arrow { font-family: var(--serif); }

/* ---------- Hero (wood, like the Library shelf) ---------- */

/* the phone stands on the wood and overlaps the paper below; clip only sideways */
.hero { border-bottom: 1px solid var(--wood-deep); overflow-x: clip; }
.hero .inner {
  max-width: var(--page); margin: 0 auto;
  padding: 2.5rem 1rem 0;
  display: grid; gap: 2rem;
  grid-template-columns: minmax(0, 1fr);
}
.hero .eyebrow { color: var(--amber-bright); font-size: .9rem; letter-spacing: .08em; margin: 0 0 .75rem; }
.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.2;
  margin: 0 0 1rem;
  color: var(--on-wood);
  text-wrap: balance;
}
:lang(ja) .hero h1 { font-weight: 600; line-height: 1.4; font-size: clamp(1.8rem, 5.4vw, 2.8rem); }
.hero .lead { color: var(--on-wood); opacity: .92; font-size: 1.1rem; max-width: 34rem; margin: 0 0 1.6rem; }
.hero .meta { color: var(--on-wood-2); font-size: .9rem; margin: 1rem 0 0; }
.hero .visual { display: flex; justify-content: center; align-items: flex-end; }
.hero .visual .phone { width: min(300px, 78vw); margin-bottom: -5rem; }
.hero { padding-bottom: 2rem; }

/* ---------- Phone frame ---------- */

.phone {
  border-radius: 13% / 6%;
  overflow: hidden;
  background: #000;
  padding: 2.2%;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .55), 0 18px 40px rgba(0, 0, 0, .35);
}
.phone img { border-radius: 11.5% / 5.3%; width: 100%; }
.plain img { border-radius: 12px; }
.shot {
  border-radius: 12px; overflow: hidden;
  border: 1px solid var(--rule);
  box-shadow: 0 6px 18px var(--shadow);
  background: var(--card);
}

/* ---------- Page sections (paper) ---------- */

main { display: block; }
.section {
  max-width: var(--page);
  margin: 0 auto;
  padding: 4rem 1rem 0;
}
.section:last-child { padding-bottom: 4rem; }
.hero + .section { padding-top: 6rem; }

.heading-label {
  display: flex; align-items: center; gap: .55rem;
  font-size: .85rem; letter-spacing: .08em;
  color: var(--brass-ink);
  margin: 0 0 .5rem;
  font-weight: 600;
}
.heading-label::before {
  content: ""; width: 3px; height: 1em; background: var(--amber); border-radius: 2px;
}

h2 { font-size: clamp(1.55rem, 3.6vw, 2.1rem); line-height: 1.3; margin: 0 0 1rem; font-weight: 600; text-wrap: balance; }
h3 { font-size: 1.2rem; line-height: 1.4; margin: 0 0 .5rem; font-weight: 600; }
p { margin: 0 0 1rem; }
.intro { color: var(--ink-2); max-width: var(--measure); font-size: 1.05rem; }

.card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: 0 2px 10px var(--shadow);
  padding: 1.4rem 1.3rem;
}

.steps {
  list-style: none; padding: 0; margin: 2rem 0 0;
  display: grid; gap: 1rem; grid-template-columns: minmax(0, 1fr);
  counter-reset: step;
}
.steps > li { counter-increment: step; }
.steps .num { font-family: var(--wordmark); font-size: 2rem; line-height: 1; color: var(--brass-ink); margin: 0 0 .6rem; }

/* feature rows: text + phone */
.feature {
  display: grid; gap: 2rem; align-items: center;
  grid-template-columns: minmax(0, 1fr);
  padding: 3rem 0 0;
}
.feature .figure { display: flex; justify-content: center; gap: 1rem; min-width: 0; }
.feature .figure .phone { width: min(260px, 70vw); }
.feature .figure.pair .phone { width: min(220px, 42vw); }
.feature .text { max-width: var(--measure); }
.feature ul { padding-left: 1.2rem; margin: 0 0 1rem; }
.feature li { margin: .25rem 0; }

.marks { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; gap: .55rem; }
.marks li { display: flex; gap: .7rem; align-items: center; }
.mark { flex: none; width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center; }

.grid-3 { display: grid; gap: 1rem; grid-template-columns: minmax(0, 1fr); margin-top: 2rem; }

.callout {
  background: var(--brass-soft);
  border-left: 3px solid var(--amber);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  margin: 1.2rem 0;
}
.callout p:last-child { margin-bottom: 0; }

.privacy-band { margin-top: 4rem; }
.privacy-band .inner {
  max-width: var(--page); margin: 0 auto; padding: 3rem 1rem;
  display: grid; gap: 1.5rem; grid-template-columns: minmax(0, 1fr); align-items: center;
}
.privacy-band h2 { color: var(--on-wood); }
.privacy-band p { color: var(--on-wood); opacity: .92; max-width: var(--measure); }
.privacy-band .fine { color: var(--on-wood-2); opacity: 1; font-size: .92rem; }
.privacy-band .fine a { color: var(--amber-bright); }
.privacy-band .heading-label { color: var(--amber-bright); }
.seal {
  justify-self: center;
  width: 9rem; height: 9rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; text-align: center;
  border: 2px solid var(--amber); color: var(--amber-bright);
  font-size: .85rem; letter-spacing: .1em; line-height: 1.5;
  box-shadow: 0 0 0 6px rgba(214, 143, 65, .12) inset;
}

/* pricing */
.plans { display: grid; gap: 1rem; grid-template-columns: minmax(0, 1fr); margin-top: 1.5rem; }
.plan .name { font-weight: 600; margin: 0 0 .3rem; }
.plan .price { font-size: 1.6rem; margin: 0 0 .2rem; font-family: var(--serif); }
.plan .price small { font-size: .95rem; color: var(--ink-2); }
.plan .sub { color: var(--ink-2); margin: 0; font-size: .95rem; }
.plan.best { border-color: var(--brass); box-shadow: 0 0 0 1px var(--brass) inset, 0 2px 10px var(--shadow); }
.note { color: var(--ink-2); font-size: .92rem; max-width: var(--measure); margin-top: 1rem; }

.contact-box { display: flex; flex-wrap: wrap; gap: .8rem 1.5rem; align-items: center; justify-content: space-between; }
.contact-box p { margin: 0; }
.mail { font-size: 1.1rem; word-break: break-all; }

.cta-band { text-align: center; }
.cta-band .inner { max-width: var(--page); margin: 0 auto; padding: 3rem 1rem; }
.cta-band .wordmark { font-size: 2.6rem; display: block; margin-bottom: .8rem; }
.cta-band p { color: var(--on-wood-2); }

/* ---------- Footer (wood bar) ---------- */

.site-foot { background: var(--wood-bar); color: var(--on-wood-2); border-top: 1px solid var(--wood-rule); margin-top: 4rem; }
.site-foot .inner { max-width: var(--page); margin: 0 auto; padding: 2rem 1rem 2.5rem; display: grid; gap: 1rem; }
.site-foot ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .3rem 1.3rem; }
.site-foot a { color: var(--on-wood); text-decoration: none; font-size: .95rem; }
.site-foot a:hover { text-decoration: underline; }
.site-foot .wordmark { font-size: 1.6rem; }
.site-foot .copy { font-size: .85rem; margin: 0; color: var(--on-wood-3); }
.site-foot .copy span { display: inline-block; }

/* ---------- Documents (privacy / terms / legal) ---------- */

.doc { max-width: 48rem; margin: 0 auto; padding: 2.5rem 1rem 0; }
.doc article {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: 0 2px 10px var(--shadow);
  padding: 2rem 1.25rem;
}
.doc h1 { font-size: clamp(1.6rem, 4.5vw, 2.1rem); line-height: 1.35; margin: 0 0 .3rem; font-weight: 600; }
.doc .updated { color: var(--ink-3); font-size: .9rem; margin-bottom: 1.6rem; }
.doc h2 {
  font-size: 1.2rem; margin: 2.2rem 0 .7rem; padding-left: .7rem;
  border-left: 3px solid var(--amber);
}
.doc ul { padding-left: 1.3rem; }
.doc li { margin: .45rem 0; }
.doc .callout p { margin: 0; }
.doc .fine { color: var(--ink-2); font-size: .92rem; margin-top: 1.4rem; }
.doc .translation-note { margin: 0 0 1.4rem; }
.doc table { width: 100%; border-collapse: collapse; font-size: .97rem; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: .8rem .6rem; border-top: 1px solid var(--rule); }
.doc tr:last-child th, .doc tr:last-child td { border-bottom: 1px solid var(--rule); }
.doc th { width: 34%; color: var(--ink-2); font-weight: 600; }
.doc td a, .mail { overflow-wrap: anywhere; }
@media (max-width: 599px) {
  .doc table, .doc tbody, .doc tr, .doc th, .doc td { display: block; width: auto; }
  .doc th { padding: .8rem 0 .1rem; }
  .doc td { border-top: 0; padding: 0 0 .8rem; }
  .doc tr:last-child th { border-bottom: 0; }
}

/* ---------- Guide ---------- */

.guide-head { max-width: var(--page); margin: 0 auto; padding: 2.5rem 1rem 0; }
.guide-head h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); line-height: 1.25; margin: 0 0 .6rem; font-weight: 600; }
.guide-layout {
  max-width: var(--page); margin: 0 auto; padding: 1.5rem 1rem 0;
  display: grid; gap: 2rem; grid-template-columns: minmax(0, 1fr);
}
.toc { font-size: .95rem; }
.toc details { background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); padding: .4rem 1rem; }
.toc summary { cursor: pointer; font-weight: 600; padding: .5rem 0; color: var(--ink); }
.toc ol { margin: .2rem 0 .8rem; padding-left: 2rem; }
.toc li { margin: .2rem 0; }
.toc a { text-decoration: none; color: var(--ink-2); }
.toc a:hover { color: var(--brass-ink); text-decoration: underline; }

.guide article { min-width: 0; }
.guide section { padding-top: 1.2rem; margin-bottom: 2.6rem; border-top: 1px solid var(--rule); }
.guide section:first-child { border-top: 0; padding-top: 0; }
.guide h2 { font-size: clamp(1.4rem, 3.4vw, 1.8rem); margin: 1rem 0 .8rem; }
.guide h2 .no { color: var(--brass-ink); font-family: var(--wordmark); margin-right: .15rem; font-weight: 400; }
.guide h3 { margin-top: 1.8rem; font-size: 1.12rem; }
.guide p, .guide li { max-width: var(--measure); }
.guide ol, .guide ul { padding-left: 1.4rem; margin: 0 0 1rem; }
.guide li { margin: .35rem 0; }
.ui {
  font-family: var(--serif);
  font-weight: 600;
  background: var(--brass-soft);
  color: var(--ink);
  padding: .02em .22em;
  border-radius: 5px;
  white-space: normal;
}
/* short labels stay on one line (keep-all was tried: WebKit then refuses to break next to the chip) */
.ui.nw { white-space: nowrap; }
.guide .path { color: var(--ink-2); }
.guide kbd { font-family: var(--mono); font-size: .85em; }

.step-row { display: grid; gap: 1.2rem; grid-template-columns: minmax(0, 1fr); align-items: start; margin: 1rem 0 1.5rem; }
.step-row figure, .figs figure { margin: 0; }
.step-row figure { justify-self: center; width: min(250px, 72vw); }
.figs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin: 1rem 0 1.5rem; max-width: 34rem; }
.figs.three { grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 44rem; }
@media (max-width: 599px) {
  /* three phones side by side are ~100 px wide on a phone: too small to read */
  .figs.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  /* cropped screens (not phones) are wide: one per row so their text stays legible */
  .figs.three.shots { grid-template-columns: minmax(0, 1fr); max-width: 24rem; }
}
figcaption { font-size: .85rem; color: var(--ink-2); margin-top: .5rem; line-height: 1.5; text-align: center; }

.tip {
  border: 1px dashed var(--brass);
  border-radius: 10px;
  padding: .8rem 1rem;
  margin: 1rem 0;
  background: color-mix(in srgb, var(--card) 70%, transparent);
  max-width: var(--measure);
}
.tip p:last-child, .tip ul:last-child { margin-bottom: 0; }
.tip strong:first-child { color: var(--brass-ink); }

.table-wrap { overflow-x: auto; max-width: 100%; }
.guide table { border-collapse: collapse; font-size: .95rem; margin: .5rem 0 1.2rem; min-width: 18rem; }
.guide th, .guide td { border-top: 1px solid var(--rule); padding: .55rem .7rem; text-align: left; vertical-align: top; }
.guide thead th { border-top: 0; color: var(--ink-2); font-weight: 600; }
.flag { display: inline-block; width: .7rem; height: 1rem; border-radius: 2px; vertical-align: -.12rem; margin-right: .4rem; }

.faq details { background: var(--card); border: 1px solid var(--rule); border-radius: 10px; padding: 0 1rem; margin: .6rem 0; max-width: var(--measure); }
.faq summary { cursor: pointer; padding: .8rem 0; font-weight: 600; }
.faq details[open] summary { border-bottom: 1px solid var(--rule); margin-bottom: .7rem; }
.faq details > :last-child { margin-bottom: .9rem; }

.back-top { font-size: .9rem; }

/* ---------- 404 ---------- */
.notfound { max-width: 40rem; margin: 0 auto; padding: 4rem 1rem 0; text-align: center; }
.notfound .code { font-family: var(--wordmark); font-size: 4rem; color: var(--brass-ink); margin: 0; line-height: 1; }
.notfound .pair { display: grid; gap: 1.5rem; margin-top: 2rem; }
.notfound h1, .notfound h2 { font-size: 1.4rem; margin: 0 0 .5rem; }

/* ---------- Larger screens ---------- */

@media (min-width: 720px) {
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-3, .plans { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .doc article { padding: 2.6rem 2.6rem; }
  .step-row.with-fig { grid-template-columns: minmax(0, 1fr) 230px; gap: 2rem; }
  .step-row figure { width: 100%; }
  .site-foot .inner { grid-template-columns: auto 1fr; align-items: center; }
  .site-foot ul { justify-content: flex-end; }
  .site-foot .copy { grid-column: 1 / -1; }
  .notfound .pair { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 900px) {
  .site-head .inner { padding: 1rem 1.5rem .25rem; }
  .head-row { flex-wrap: nowrap; }
  .hero .inner { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); padding: 3.5rem 1.5rem 0; align-items: center; }
  .hero .visual .phone { width: 300px; margin-bottom: -5.5rem; }
  .section, .guide-head, .guide-layout { padding-left: 1.5rem; padding-right: 1.5rem; }
  .feature { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 3rem; }
  .feature.flip .figure { order: -1; }
  .privacy-band .inner { grid-template-columns: minmax(0, 1fr) auto; padding: 3.5rem 1.5rem; }
  .guide-layout { grid-template-columns: 15rem minmax(0, 1fr); gap: 3rem; }
  .toc { position: sticky; top: 1rem; align-self: start; max-height: calc(100vh - 2rem); overflow-y: auto; }
  .toc details { background: transparent; border: 0; padding: 0; }
  /* always open here: hide the toggle so the list can't be collapsed by keyboard */
  .toc summary { display: none; }
}

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

@media print {
  body::before { display: none; }
  .site-head, .site-foot, .toc, .skip { display: none; }
  .doc article, .card { box-shadow: none; }
}