/* ==========================================================================
   ALTO theme — トップページ
   ========================================================================== */

/* --- Hero --------------------------------------------------------------- */

.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
}

.hero__media,
.hero__overlay {
  position: absolute;
  inset: 0;
}

.hero__media { z-index: 0; }

.hero__media picture,
.hero__media img { width: 100%; height: 100%; }

.hero__media img { object-fit: cover; }

.hero__overlay {
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(8, 8, 10, .72) 0%, rgba(8, 8, 10, .35) 42%, rgba(8, 8, 10, .95) 100%);
}

.hero__glow {
  position: absolute;
  left: 50%;
  top: 12%;
  z-index: 1;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow-strong), rgba(232, 176, 87, 0) 62%);
  transform: translateX(-50%);
  pointer-events: none;
  animation: altoGlow 7s ease-in-out infinite;
}

.hero__text {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 0 var(--gutter) 96px;
  animation: altoRise 1.1s var(--ease-out) both;
}

.hero__logo { height: 34px; width: auto; margin: 0 0 32px; }

.hero__kicker {
  margin: 0 0 20px;
  font-size: 12px;
  letter-spacing: .34em;
  color: var(--color-accent);
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(38px, 6.4vw, 104px);
  line-height: 1.28;
  letter-spacing: .06em;
  text-wrap: pretty;
}

.hero__lead {
  margin: 40px 0 0;
  max-width: 520px;
  font-size: 14px;
  line-height: 2.2;
  color: var(--color-text-70);
}

@media (max-width: 640px) {
  .hero__text { padding-bottom: 64px; }
  .hero__logo { height: 28px; margin-bottom: 24px; }
  .hero__lead { margin-top: 28px; }
  .hero__glow { width: 420px; height: 420px; }
}

/* --- Section shell ------------------------------------------------------- */

.front-section {
  position: relative;
  padding: var(--section-pad-md) var(--gutter);
  border-top: 1px solid var(--line-section);
}

.front-section--message { padding-block: var(--section-pad); }
.front-section--business { padding-bottom: 40px; }
.front-section--games { margin-top: 120px; }

.front-section--contact {
  padding: clamp(100px, 4rem + 8vw, 170px) var(--gutter) clamp(90px, 3.5rem + 7vw, 150px);
  overflow: hidden;
}

.split {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  align-items: start;
}

@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; gap: 40px; }
  .front-section--games { margin-top: 64px; }
}

/* --- Message ------------------------------------------------------------- */

.message__title {
  margin: 0 0 48px;
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 44px);
  line-height: 1.7;
  letter-spacing: .04em;
  text-wrap: pretty;
}

.message__body {
  display: flex;
  flex-direction: column;
  gap: 30px;
  max-width: 660px;
  font-size: 15px;
  line-height: 2.3;
  color: var(--color-text-76);
}

@media (max-width: 640px) {
  .message__title { margin-bottom: 32px; }
  .message__body { gap: 24px; font-size: 14px; line-height: 2.2; }
}

/* --- Business ------------------------------------------------------------ */

.business__head { margin-bottom: 64px; }

.business__visuals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 96px;
}

.business__visual {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
}

.business__visual picture,
.business__visual img { width: 100%; height: 100%; }
.business__visual img { object-fit: cover; }

.business__list { display: flex; flex-direction: column; }

.business-row {
  display: grid;
  grid-template-columns: 96px 1fr 1.1fr;
  gap: 48px;
  align-items: start;
  padding: 52px 0;
  border-top: 1px solid var(--line-row);
}

.business-row:last-child { border-bottom: 1px solid var(--line-row); }

.business-row__index {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1;
  color: var(--color-accent);
}

.business-row__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.4vw, 34px);
  line-height: 1.5;
  letter-spacing: .04em;
}

.business-row__en {
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--color-text-60);
}

.business-row__desc {
  font-size: 14px;
  line-height: 2.2;
  color: var(--color-text-70);
}

.business__note {
  margin: 56px 0 0;
  max-width: 760px;
  font-size: 12px;
  line-height: 2.1;
  color: var(--color-text-58);
}

@media (max-width: 900px) {
  .business-row { grid-template-columns: 1fr; gap: 20px; padding: 40px 0; }
  .business__visuals { margin-bottom: 64px; }
}

@media (max-width: 640px) {
  .business__visuals { grid-template-columns: 1fr; gap: 16px; }
  .business__head { margin-bottom: 40px; }
}

/* --- Games --------------------------------------------------------------- */

.games__head { margin-bottom: 72px; }

.games__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 56px 40px;
}

.game-card { display: flex; flex-direction: column; gap: 20px; }

.game-card__icon {
  width: 120px;
  height: 120px;
  border-radius: 28px;
  object-fit: cover;
}

.game-card__meta { display: flex; flex-direction: column; gap: 6px; }

.game-card__title {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.5;
  letter-spacing: .04em;
}

.game-card__desc {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--color-text-60);
}

.game-card__stores {
  display: flex;
  gap: 20px;
  font-size: 11px;
  letter-spacing: .16em;
}

.game-card__store { color: var(--color-accent); }
.game-card__store:hover { opacity: .7; }

@media (max-width: 900px) {
  .games__grid { grid-template-columns: repeat(2, 1fr); gap: 48px 32px; }
  .games__head { margin-bottom: 48px; }
}

@media (max-width: 560px) {
  .games__grid { grid-template-columns: 1fr; gap: 40px; }
  .game-card__icon { width: 96px; height: 96px; border-radius: 22px; }
}

/* --- Company ------------------------------------------------------------- */

.company__list {
  display: grid;
  grid-template-columns: 160px 1fr;
  column-gap: 32px;
  row-gap: 0;
  margin: 0;
  font-size: 14px;
  line-height: 2;
}

.company__list dt,
.company__list dd {
  margin: 0;
  padding: 26px 0;
  border-top: 1px solid var(--line-row);
}

.company__list dt {
  letter-spacing: .1em;
  color: var(--color-text-50);
}

.company__list dt:last-of-type,
.company__list dd:last-of-type { border-bottom: 1px solid var(--line-row); }

@media (max-width: 640px) {
  .company__list { grid-template-columns: 1fr; }
  .company__list dt { padding: 22px 0 0; }
  .company__list dt:last-of-type { border-bottom: 0; }
  .company__list dd { padding: 4px 0 22px; border-top: 0; }
}

/* --- Contact ------------------------------------------------------------- */

.contact__glow {
  position: absolute;
  left: 50%;
  bottom: -320px;
  width: 900px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow-soft), rgba(232, 176, 87, 0) 65%);
  transform: translateX(-50%);
  pointer-events: none;
}

.contact__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 36px;
  text-align: center;
}

.contact__title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.4vw, 50px);
  line-height: 1.6;
  letter-spacing: .04em;
}

.contact__lead {
  max-width: 520px;
  font-size: 14px;
  line-height: 2.2;
  color: var(--color-text-68);
}

@media (max-width: 640px) {
  .contact__inner { gap: 28px; }
  .contact__glow { width: 600px; height: 420px; bottom: -220px; }
}