/*
 * Shared design system for ishinomaru.com.
 *
 * One skeleton, three pages. The studio page and Scorelio share the blue/teal
 * accent; the Otoful page swaps it for coral by setting .brand-otoful on <body>.
 * The accent is reserved for places where something is actually signalled — the
 * rule at the top edge, a primary button, the availability dot, list markers —
 * so colour never becomes wallpaper.
 *
 * Both languages stay in the DOM for SEO; CSS hides the inactive one based on
 * data-lang, which an inline <head> script sets before first paint.
 */

:root{
  --paper:#FFFFFF;
  --paper-2:#F5F7F9;
  --ink:#14202B;
  --ink-body:#22303F;
  --ink-soft:#4E5C6C;
  --line:#E3E8ED;

  /* Display accent: rules, dots, markers — never behind text.
     The -rgb pair exists so translucent tints can theme with the brand. */
  --accent-a:#1E40AF;
  --accent-b:#0D9488;
  --accent-b-rgb:13,148,136;
  --ink-rgb:20,32,43;
  /* Button accent: dark enough to carry white text. */
  --btn-a:#1E40AF;
  --btn-b:#0B7A70;
  --link:#1B4CBF;

  --sans:"Zen Kaku Gothic New",-apple-system,BlinkMacSystemFont,"Segoe UI",
    "Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;
  --pad:clamp(20px,5vw,56px);
  --measure:900px;
}

.brand-otoful{
  --accent-a:#FF5E7E;
  --accent-b:#FF8A4D;
  --accent-b-rgb:255,138,77;
  --btn-a:#C94A66;
  --btn-b:#B3521A;
  --link:#C2473B;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--paper);color:var(--ink-body);
  font-family:var(--sans);line-height:1.9;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,strong,b{color:var(--ink)}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.mark a:hover,.btn:hover,.stores a:hover{text-decoration:none}
img{max-width:100%}
:focus-visible{outline:2px solid var(--accent-a);outline-offset:3px}

/* Language toggle: only the active language is shown. */
html:not([data-lang="en"]) [lang="en"]{display:none}
html[data-lang="en"] [lang="ja"]{display:none}

.in{max-width:var(--measure);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}

/* ---------- masthead ---------- */

.edge{height:2px;background:linear-gradient(90deg,var(--accent-a),var(--accent-b))}

.masthead{border-bottom:1px solid var(--line)}
.topbar{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding-top:16px;padding-bottom:16px;
}
.mark{margin:0;font-size:17px;font-weight:900;letter-spacing:.04em;color:var(--ink)}
.mark a{color:inherit}
.mark a:hover{opacity:.75}
.roman{margin-left:10px;font-weight:400;color:var(--ink-soft);letter-spacing:.02em}
.mark .roman{font-size:12px}
.langs{display:inline-flex;gap:14px;font-size:13px;flex-shrink:0}
.langs button{
  font:inherit;border:0;background:transparent;color:var(--ink-soft);
  padding:4px 0;cursor:pointer;border-bottom:1.5px solid transparent;
}
.langs button[aria-pressed="true"]{color:var(--ink);border-bottom-color:var(--accent-b)}

/* ---------- hero ---------- */

.hero{position:relative;overflow:hidden}
/* A quiet bar/beat grid, borrowed from an empty arrangement canvas. */
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(to right,rgba(var(--ink-rgb),.055) 0 1px,transparent 1px 128px),
    repeating-linear-gradient(to right,rgba(var(--ink-rgb),.022) 0 1px,transparent 1px 32px);
  -webkit-mask-image:linear-gradient(to bottom,#000 0,#000 42%,transparent 100%);
  mask-image:linear-gradient(to bottom,#000 0,#000 42%,transparent 100%);
}
.hero .in{position:relative;padding-top:clamp(52px,8vw,100px);padding-bottom:clamp(48px,7vw,88px)}
.hero h1{margin:0;font-size:clamp(52px,7.5vw,92px);font-weight:900;line-height:1;letter-spacing:-.02em}
.hero .what{
  margin:clamp(22px,3vw,32px) 0 0;font-size:clamp(18px,2vw,23px);
  line-height:1.7;color:var(--ink);
}
.hero .promise{margin:10px 0 0;font-size:15px;line-height:1.85;color:var(--ink-soft)}

.app-hero-head{display:flex;align-items:center;gap:clamp(16px,3vw,26px);flex-wrap:wrap}
.app-hero-head img{
  width:clamp(64px,9vw,88px);height:auto;border-radius:20px;display:block;flex-shrink:0;
  box-shadow:0 6px 22px rgba(var(--ink-rgb),.14);
}
.hero .app-name{margin:0;font-size:clamp(40px,6vw,68px);font-weight:900;line-height:1.05;letter-spacing:-.02em}

.cta{margin:clamp(28px,4vw,40px) 0 0;display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px}
.cta .stores{margin-top:0}
.btn{
  display:inline-block;padding:14px 26px;border-radius:3px;font-size:15px;font-weight:700;
  transition:transform .15s ease,box-shadow .15s ease;
}
.btn-solid{color:#fff;background:linear-gradient(90deg,var(--btn-a),var(--btn-b))}
.btn-solid:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(var(--ink-rgb),.22)}
.btn-line{color:var(--ink);box-shadow:inset 0 0 0 1px var(--line);background:var(--paper)}
.btn-line:hover{box-shadow:inset 0 0 0 1px var(--ink)}
.status{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:var(--ink)}
.status::before{
  content:"";width:8px;height:8px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent-a),var(--accent-b));
  box-shadow:0 0 0 4px rgba(var(--accent-b-rgb),.16);
}

/* ---------- sections ---------- */

section{border-top:1px solid var(--line)}
section .in{padding-top:clamp(44px,6vw,72px);padding-bottom:clamp(44px,6vw,72px)}
/* Alternate the ground automatically: adding or removing a section keeps the
   rhythm, and an HTML-commented section does not shift it. */
main > section:nth-of-type(even){background:var(--paper-2)}
h2{margin:0 0 18px;font-size:19px;font-weight:700;letter-spacing:.01em;line-height:1.6}
h3{margin:0 0 10px;font-size:16px;font-weight:700}
p{margin:0 0 14px;font-size:16px;line-height:1.95}
p:last-child{margin-bottom:0}
.lede{font-size:17px;color:var(--ink)}
.note{font-size:14px;color:var(--ink-soft);line-height:1.85}
/* A note introducing what follows, and a note trailing a block. */
h2 + .note{margin-bottom:18px}
.facts + .note{margin-top:18px}
/* The two language variants of one paragraph are siblings and only one shows,
   so the rule has to reach the second as well. */
.list + p,.list + p + p{margin-top:22px}

/* Definition rows: business facts, spec-style. */
.facts{margin:0;display:grid;grid-template-columns:1fr}
.facts dt{padding:14px 0 4px;font-size:14px;font-weight:700;color:var(--ink-soft)}
.facts dd{margin:0;padding:0 0 14px;font-size:15.5px;line-height:1.85;border-bottom:1px solid var(--line);word-break:break-word}
@media (min-width:720px){
  .facts{grid-template-columns:190px minmax(0,1fr)}
  .facts dt{padding:16px 0;border-bottom:1px solid var(--line)}
  .facts dd{padding:16px 0}
}
.facts dt:first-of-type,.facts dd:first-of-type{padding-top:0}

/* Marked list: a title line and one sentence under it. */
.list{list-style:none;margin:0;padding:0;display:grid;gap:16px}
@media (min-width:820px){.list.two{grid-template-columns:1fr 1fr;column-gap:40px}}
.list li{padding-left:18px;position:relative;font-size:15.5px;line-height:1.85}
.list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:1px;
  background:linear-gradient(135deg,var(--accent-a),var(--accent-b));
}
.list b{display:block;font-weight:700}
.list .sub{color:var(--ink-soft)}
.list .note{display:block;margin-top:4px}

/* Checked list: things that are true / on offer. Two layouts, one marker. */
.checks{list-style:none;margin:0 0 26px;padding:0;display:grid;gap:10px}
.checks li,.assurances li{position:relative;padding-left:25px;font-size:15.5px;line-height:1.8}
.checks li::before,.assurances li::before{
  content:"\2713";position:absolute;left:0;color:var(--accent-b);font-weight:700;
}

/* Plain notes: caveats, before-you-start. */
.notes{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.notes li{position:relative;padding-left:1.2em;font-size:15px;line-height:1.85;color:var(--ink-soft)}
.notes li::before{content:"\30FB";position:absolute;left:0;color:var(--accent-b)}

.panel,.app,.contact{
  padding:clamp(20px,3vw,28px);border:1px solid var(--line);border-radius:6px;background:var(--paper);
}

.tags{list-style:none;padding:0;margin:16px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.tags li{
  font-size:12.5px;font-weight:700;padding:5px 12px;border-radius:3px;
  background:var(--paper-2);color:var(--ink-soft);border:1px solid var(--line);
}


/* ---------- talks ---------- */

.talk-title{margin:0 0 6px;font-size:16.5px;font-weight:700;line-height:1.6;color:var(--ink)}
.talk-meta{margin:0 0 12px;font-size:14px;color:var(--ink-soft)}
.talk-note{margin:14px 0 0;padding-top:14px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-soft)}

/* ---------- products ---------- */

.apps{display:grid;gap:20px}
.app-head{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.app-head img{width:56px;height:56px;border-radius:14px;display:block;flex-shrink:0}
.app-head p{margin:0;font-size:20px;font-weight:900;letter-spacing:.01em;color:var(--ink)}
.app > p{font-size:15px;line-height:1.85}
.stores{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:16px}
.stores a{display:inline-block;line-height:0}
.stores a:hover{text-decoration:none}
.stores img{height:44px;width:auto;display:block}
/* The Play badge ships with built-in clear space; scale it so the buttons match. */
.stores img[src*="google-play"]{height:58px}
.qr{display:flex;align-items:center;gap:14px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.qr img{width:88px;height:88px;border:1px solid var(--line);border-radius:6px;padding:5px;background:var(--paper)}
.qr p{margin:0;font-size:13px;line-height:1.6;color:var(--ink-soft)}

/* ---------- screenshots ---------- */

/* The row scrolls edge to edge: it reclaims the container's side padding so the
   shots have the full measure to sit in, while the first one still lines up
   with the text above it. */
.shots{display:flex;gap:16px;overflow-x:auto;margin:0 calc(var(--pad) * -1);
  padding:2px var(--pad) 10px;scroll-snap-type:x mandatory;scroll-padding-inline:var(--pad)}
/* The cap is what lets all three sit inside the measure at desktop widths, so
   the row only scrolls once the window is genuinely too narrow for them. */
.shots figure{margin:0;flex:0 0 auto;width:clamp(190px,26vw,248px);scroll-snap-align:start}
.shots img{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:12px}
.shots figcaption{margin-top:10px;color:var(--ink-soft);font-size:13px;line-height:1.6}

/* ---------- video ---------- */

/* Shorts are portrait, so the player is capped to a phone-like width. */
.short{display:block;width:100%;max-width:320px;aspect-ratio:9/16;border:0;border-radius:12px}

/* ---------- profile ---------- */

.profile{display:flex;gap:22px;align-items:center;flex-wrap:wrap;margin-bottom:18px}
.profile img{width:96px;height:96px;border-radius:50%;border:1px solid var(--line);background:var(--paper);display:block}
.profile-intro .profile-name{margin:0 0 6px;font-size:19px;font-weight:900;color:var(--ink);line-height:1.4}
.profile-name .roman{margin-left:10px;font-size:13px;font-weight:400;color:var(--ink-soft)}
.profile-intro{flex:1 1 320px;min-width:0}
.profile-intro p{margin:0;font-size:15.5px}

/* ---------- contact ---------- */

.contact{padding:clamp(24px,4vw,36px);background:var(--paper-2)}
.assurances{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:8px 28px}
@media (min-width:720px){.assurances{grid-template-columns:1fr 1fr}}
.assurances li{font-size:14.5px;color:var(--ink-soft);line-height:1.7}

.doc-list{list-style:none;margin:0;padding:0}
.doc-list li{padding:12px 0;border-bottom:1px solid var(--line);font-size:15.5px}
.doc-list li:last-child{border-bottom:none}

/* ---------- footer ---------- */

footer{border-top:1px solid var(--line);background:var(--paper)}
footer .in{padding-top:26px;padding-bottom:34px}
footer p{margin:0;font-size:13.5px;color:var(--ink-soft)}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}