/* ============================================
   ゴビョウ / Gobyou — Landing Page Styles
   ============================================ */

:root {
  --ink: #1B1233;
  --ink-2: #251A44;
  --ink-3: #32255C;
  --paper: #FFF9EC;
  --paper-2: #F4EBD3;
  --yellow: #FFC93C;
  --coral: #FF5E5B;
  --lime: #B6F26B;
  --cyan: #3EDBF0;
  --violet: #8A5CFF;
  --muted: #A79BC4;
  --muted-dark: #6E6288;

  --disp: "Dela Gothic One", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --body: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", sans-serif;
  --dot: "DotGothic16", ui-monospace, monospace;

  --wrap: 1120px;
  --radius: 20px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--cyan); }

.container {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: 20px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* --- Nav --- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(27, 18, 51, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, background .25s;
}
.nav.scrolled { border-bottom-color: rgba(255, 249, 236, .12); background: rgba(27, 18, 51, .92); }
.nav__inner {
  max-width: var(--wrap); margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 20px;
}
.nav__brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--paper); }
.nav__brand img { width: 34px; height: 34px; border-radius: 9px; }
.nav__brand span { font-family: var(--disp); font-size: 19px; letter-spacing: -.01em; }
.nav__links { display: flex; gap: 22px; margin-left: auto; }
.nav__links a { color: var(--paper); opacity: .82; text-decoration: none; font-size: 14px; font-weight: 700; }
.nav__links a:hover { opacity: 1; color: var(--yellow); }
.nav__lang { font-family: var(--dot); font-size: 13px; color: var(--muted); text-decoration: none; }
.nav__lang:hover { color: var(--yellow); }
.nav__cta {
  font-family: var(--disp); font-size: 14px; color: var(--ink);
  background: var(--yellow); padding: 9px 18px; border-radius: 999px; text-decoration: none;
  white-space: nowrap;
}
.nav__toggle { display: none; background: none; border: 0; color: var(--paper); font-size: 24px; cursor: pointer; padding: 4px 8px; }

@media (max-width: 860px) {
  .nav__toggle { display: block; margin-left: auto; order: 3; }
  .nav__links {
    order: 4; width: 100%; margin-left: 0; display: none;
    flex-direction: column; gap: 4px; padding: 10px 0 6px;
  }
  .nav.open .nav__links { display: flex; }
  .nav__links a { padding: 8px 2px; }
  .nav__cta { order: 2; margin-left: auto; font-size: 13px; padding: 8px 14px; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--disp); font-size: 17px; text-decoration: none;
  padding: 16px 30px; border-radius: 16px; border: 0; cursor: pointer;
  transition: transform .12s, box-shadow .12s;
}
.btn--primary { background: var(--yellow); color: var(--ink); box-shadow: 0 6px 0 #C79A24; }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 8px 0 #C79A24; }
.btn--primary:active { transform: translateY(4px); box-shadow: 0 2px 0 #C79A24; }
.btn--ghost { background: transparent; color: var(--paper); border: 2px solid rgba(255, 249, 236, .28); }
.btn--ghost:hover { border-color: var(--yellow); color: var(--yellow); }
.btn--dark { background: var(--ink); color: var(--paper); box-shadow: 0 6px 0 #0D0819; }
.btn--dark:hover { transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }

/* --- Sections --- */
section { padding-block: 92px; }
.section--light { background: var(--paper); color: var(--ink); }
.section--paper2 { background: var(--paper-2); color: var(--ink); }
.section--deep { background: var(--ink-2); }

.eyebrow {
  font-family: var(--dot); font-size: 13px; letter-spacing: .14em;
  color: var(--yellow); margin: 0 0 12px;
}
.section--light .eyebrow, .section--paper2 .eyebrow { color: var(--coral); }

h1, h2, h3 { font-family: var(--disp); font-weight: 400; text-wrap: balance; letter-spacing: -.02em; }
h2 { font-size: clamp(27px, 4.2vw, 38px); line-height: 1.3; margin: 0 0 18px; }
h3 { font-size: 19px; margin: 0 0 8px; }
.lead { font-size: 17px; color: var(--muted); max-width: 40em; margin: 0 0 40px; }
.section--light .lead, .section--paper2 .lead { color: var(--muted-dark); }

/* --- Hero --- */
.hero {
  position: relative; padding-block: 76px 88px; overflow: hidden;
  background:
    radial-gradient(ellipse 70% 60% at 12% 0%, rgba(138, 92, 255, .30), transparent 60%),
    radial-gradient(ellipse 60% 60% at 92% 92%, rgba(62, 219, 240, .16), transparent 60%),
    var(--ink);
}
.hero__grid {
  max-width: var(--wrap); margin: 0 auto; padding-inline: 20px;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 480px);
  gap: 48px; align-items: center;
}
.hero h1 { font-size: clamp(34px, 5.6vw, 58px); line-height: 1.16; margin: 0 0 20px; }
.hero h1 em { font-style: normal; color: var(--yellow); }
.hero__sub { font-size: 17px; color: var(--paper); opacity: .9; margin: 0 0 32px; max-width: 30em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero__note { font-family: var(--dot); font-size: 13px; color: var(--muted); margin: 18px 0 0; }

.phones { position: relative; height: 600px; }
.phones img {
  position: absolute; width: auto; max-height: 520px;
  filter: drop-shadow(0 26px 50px rgba(0, 0, 0, .55));
}
.phones img:nth-child(1) { left: 0; top: 60px; transform: rotate(-7deg); max-height: 460px; opacity: .92; }
.phones img:nth-child(2) { left: 50%; top: 0; translate: -50% 0; max-height: 560px; z-index: 2; }
.phones img:nth-child(3) { right: 0; top: 90px; transform: rotate(7deg); max-height: 460px; opacity: .92; }

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 20px; }
  .phones { height: 470px; max-width: 480px; margin-inline: auto; width: 100%; }
  .phones img { max-height: 400px; }
  .phones img:nth-child(2) { max-height: 440px; }
}
@media (max-width: 520px) {
  .phones { height: 380px; }
  .phones img { max-height: 310px; }
  .phones img:nth-child(2) { max-height: 350px; }
  .hero__actions .btn { width: 100%; }
}

/* --- Stats strip --- */
.strip { background: var(--yellow); color: var(--ink); padding-block: 26px; }
.strip__inner { display: flex; flex-wrap: wrap; gap: 14px 40px; justify-content: center; align-items: center; }
.strip__item { font-family: var(--dot); font-size: 15px; display: flex; align-items: center; gap: 8px; }
.strip__item b { font-family: var(--disp); font-size: 20px; }

/* --- Steps --- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step {
  background: var(--paper); color: var(--ink); border-radius: var(--radius);
  padding: 26px 24px 28px; border: 3px solid var(--ink);
}
.step__num {
  font-family: var(--dot); font-size: 13px; letter-spacing: .1em; color: #fff;
  background: var(--coral); display: inline-block; padding: 3px 12px; border-radius: 999px; margin-bottom: 14px;
}
.step p { margin: 0; font-size: 14.5px; color: var(--muted-dark); }
@media (max-width: 780px) { .steps { grid-template-columns: 1fr; } }

/* --- Microgames --- */
.games { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.game {
  background: var(--paper); color: var(--ink); border: 3px solid var(--ink);
  border-radius: 16px; padding: 20px 10px 16px; text-align: center;
}
.game:nth-child(3n) { background: var(--yellow); }
.game:nth-child(5n) { background: var(--lime); }
.game__cmd { font-family: var(--disp); font-size: 19px; display: block; line-height: 1.2; }
.game__how { font-family: var(--dot); font-size: 11px; color: var(--muted-dark); margin-top: 6px; display: block; }
@media (max-width: 860px) { .games { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px) { .games { grid-template-columns: repeat(2, 1fr); } }

/* --- Feature rows --- */
.feature { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; align-items: center; }
.feature + .feature { margin-top: 72px; padding-top: 72px; border-top: 1px solid rgba(27, 18, 51, .1); }
.section--deep .feature + .feature { border-top-color: rgba(255, 249, 236, .12); }
.feature--rev { grid-template-columns: 300px minmax(0, 1fr); }
.feature--rev .feature__text { order: 2; }
.feature__list { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 12px; }
.feature__list li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; }
.feature__list li::before { content: "✓"; color: var(--coral); font-weight: 900; flex: none; }
.section--deep .feature__list li::before { color: var(--lime); }
.feature__img img { max-height: 500px; width: auto; margin-inline: auto; }
@media (max-width: 880px) {
  .feature, .feature--rev { grid-template-columns: 1fr; gap: 26px; }
  .feature--rev .feature__text { order: 0; }
  .feature__img { max-width: 280px; margin-inline: auto; }
  .feature__img img { max-height: 420px; }
}

/* --- Pricing --- */
.plans { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; max-width: 840px; }
.plan {
  border-radius: var(--radius); padding: 30px 28px 32px;
  background: var(--ink-3); border: 3px solid rgba(255, 249, 236, .16);
}
.plan--pro { background: var(--paper); color: var(--ink); border-color: var(--yellow); position: relative; }
.plan__badge {
  position: absolute; top: -14px; right: 22px; background: var(--coral); color: #fff;
  font-family: var(--dot); font-size: 12px; padding: 4px 14px; border-radius: 999px;
}
.plan__name { font-family: var(--disp); font-size: 22px; margin: 0 0 4px; }
.plan__price { font-family: var(--disp); font-size: 34px; margin: 10px 0 2px; }
.plan__price small { font-family: var(--body); font-size: 14px; font-weight: 700; opacity: .7; }
.plan__sub { font-family: var(--dot); font-size: 12.5px; color: var(--muted); margin: 0 0 18px; }
.plan--pro .plan__sub { color: var(--muted-dark); }
.plan ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; font-size: 14.5px; }
.plan li::before { content: "・"; color: var(--yellow); }
.plan--pro li::before { color: var(--coral); }
.pricing__note { font-size: 12.5px; color: var(--muted); margin-top: 24px; max-width: 46em; line-height: 1.8; }
@media (max-width: 720px) { .plans { grid-template-columns: 1fr; } }

/* --- FAQ --- */
.faq { max-width: 780px; }
.faq details {
  border-bottom: 1px solid rgba(27, 18, 51, .14); padding: 18px 2px;
}
.faq summary {
  font-family: var(--disp); font-size: 16.5px; cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; gap: 16px; align-items: flex-start;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 22px; color: var(--coral); flex: none; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq p { margin: 12px 0 2px; font-size: 14.5px; color: var(--muted-dark); }

/* --- CTA --- */
.cta { text-align: center; background: var(--ink-2); }
.cta h2 { margin-bottom: 14px; }
.cta .lead { margin-inline: auto; }

/* --- Footer --- */
.footer { background: #120C24; padding-block: 44px; font-size: 13.5px; }
.footer__inner { display: flex; flex-wrap: wrap; gap: 20px 40px; justify-content: space-between; align-items: flex-start; }
.footer__links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--yellow); }
.footer__copy { color: var(--muted-dark); font-family: var(--dot); font-size: 12px; }

/* --- Legal / doc pages --- */
.doc { background: var(--paper); color: var(--ink); min-height: 100vh; }
.doc .container { max-width: 760px; padding-block: 56px 80px; }
.doc h1 { font-size: clamp(28px, 4vw, 38px); margin: 0 0 6px; }
.doc h2 { font-size: 20px; margin: 38px 0 10px; }
.doc p, .doc li { font-size: 15px; color: #382C58; }
.doc ul { padding-left: 1.3em; }
.doc a { color: var(--violet); }
.doc .updated { font-family: var(--dot); font-size: 13px; color: var(--muted-dark); margin-bottom: 30px; }
.doc .back { display: inline-block; margin-bottom: 26px; font-family: var(--dot); font-size: 13px; text-decoration: none; }
.doc .qa { border-left: 4px solid var(--yellow); padding: 4px 0 4px 16px; margin: 22px 0; }
.doc .qa h3 { font-size: 16px; margin-bottom: 4px; }

/* --- Fade in --- */
.fade-in { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.fade-in.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .fade-in { opacity: 1; transform: none; } }