/* コーポレート（トップ / 遊技機開発）— 白基調・ロゴ4色 */

:root {
  --paper: #ffffff;
  --mist: #f3f6f8;      /* セクション交互背景 */
  --rule: #dfe5ea;
  --ink: #3b3b3b;       /* ロゴ: 猫・M */
  --deep: #275c74;      /* ロゴ: E */
  --steel: #147dac;     /* ロゴ: L */
  --signal: #009ee5;    /* ロゴ: M */
  --muted: #4f575c;
  --latin: "Josefin Sans", "Zen Kaku Gothic New", sans-serif;
  --jp: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --wrap: 1120px;
  --gutter: clamp(20px, 5vw, 48px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--jp);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.9;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
ul, dl { list-style: none; margin: 0; padding: 0; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
@media (max-width: 768px) { .pc { display: none; } }
.visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---------- ロゴ4色のスペクトラム帯 ---------- */
.spectrum, .c-footer__bar { display: flex; height: 4px; }
.spectrum span, .c-footer__bar span { flex: 1; }
.spectrum span:nth-child(1), .c-footer__bar span:nth-child(1) { background: var(--ink); }
.spectrum span:nth-child(2), .c-footer__bar span:nth-child(2) { background: var(--deep); }
.spectrum span:nth-child(3), .c-footer__bar span:nth-child(3) { background: var(--steel); }
.spectrum span:nth-child(4), .c-footer__bar span:nth-child(4) { background: var(--signal); }

/* ---------- Header ---------- */
.c-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; padding: 0 var(--gutter);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.c-header__logo img { height: 26px; width: auto; }
.c-header__nav { display: flex; gap: 36px; font-size: 15px; letter-spacing: .08em; }
.c-header__nav a { text-decoration: none; padding: 6px 0; background: linear-gradient(var(--signal), var(--signal)) left bottom / 0 1px no-repeat; transition: background-size .3s; }
.c-header__nav a:hover { background-size: 100% 1px; }
.c-header__toggle { display: none; }

@media (max-width: 768px) {
  .c-header { height: 60px; }
  .c-header__logo img { height: 22px; }
  .c-header__toggle {
    display: grid; place-content: center; gap: 7px;
    width: 44px; height: 44px; margin-right: -10px; padding: 0;
    background: none; border: 0; cursor: pointer;
  }
  .c-header__toggle span { display: block; width: 24px; height: 2px; background: var(--ink); transition: transform .3s; }
  .c-header__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
  .c-header__toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(-4.5px) rotate(-45deg); }
  .c-header__nav {
    display: none; flex-direction: column; gap: 0;
    position: absolute; top: 100%; left: 0; right: 0;
    padding: 8px var(--gutter) 24px;
    background: var(--paper); border-bottom: 1px solid var(--rule);
    font-size: 16px;
  }
  .c-header__nav.is-open { display: flex; }
  .c-header__nav a { padding: 14px 0; border-bottom: 1px solid var(--rule); background: none; }
}

/* ---------- Hero ---------- */
.hero {
  max-width: calc(var(--wrap) + 2 * var(--gutter)); margin: 0 auto;
  padding: clamp(72px, 12vw, 152px) var(--gutter) 0;
}
.hero__eyebrow, .block__eyebrow {
  margin: 0;
  font-family: var(--latin); font-weight: 400;
  font-size: 15px; letter-spacing: .3em; text-transform: uppercase;
  color: var(--steel);
}
.hero__logo { width: clamp(240px, 38vw, 480px); height: auto; margin-bottom: clamp(32px, 4.4vw, 56px); }
.hero__title {
  margin: 0;
  font-weight: 500;
  font-size: clamp(38px, 6.4vw, 80px);
  line-height: 1.32; letter-spacing: .06em;
}
.hero__title--sub { font-size: clamp(32px, 5vw, 60px); }
.hero__lead { max-width: 40em; margin: 32px 0 0; color: var(--muted); font-size: clamp(16px, 1.6vw, 19px); line-height: 2; }
.hero .spectrum { width: min(320px, 60%); margin-top: clamp(48px, 7vw, 80px); }
.hero--sub { padding-top: clamp(56px, 9vw, 112px); }

/* ---------- Block 共通 ---------- */
.block { padding: clamp(80px, 11vw, 136px) var(--gutter); }
.block > * { max-width: var(--wrap); margin-left: auto; margin-right: auto; }
.block--mist { background: var(--mist); }
.block__head { display: flex; align-items: baseline; gap: 20px; margin-bottom: clamp(36px, 5vw, 56px); }
.block__title { margin: 0; font-size: clamp(24px, 2.6vw, 30px); font-weight: 500; letter-spacing: .1em; }
.block__eyebrow { order: 2; font-size: 14px; }
.block__link { margin-top: 32px; text-align: right; font-size: 15px; }
.block__link a { color: var(--deep); text-decoration: none; }
.block__link a:hover { text-decoration: underline; }

/* ---------- 事業の扉 + 猫 ---------- */
.doors {
  position: relative;
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px, 2.4vw, 32px);
}
/* ロゴの猫（座り + 走り4コマのスプライト。表示コマは JS が data-frame で切替） */
.doors__cat {
  position: absolute; top: -46px; left: 22px; z-index: 1;
  width: 64px; color: var(--ink);
  will-change: transform;
}
.doors__cat .cat { display: block; width: 100%; height: auto; }
.cat__f { display: none; }
.doors__cat[data-frame="0"] .cat__f0,
.doors__cat[data-frame="1"] .cat__f1,
.doors__cat[data-frame="2"] .cat__f2,
.doors__cat[data-frame="3"] .cat__f3,
.doors__cat[data-frame="4"] .cat__f4 { display: inline; }

.door {
  position: relative;
  display: flex; flex-direction: column;
  min-height: 400px; padding: clamp(28px, 3.6vw, 48px);
  color: #fff; text-decoration: none;
  transition: transform .4s cubic-bezier(.2, .7, .2, 1), box-shadow .4s;
}
.door { overflow: hidden; }
.door--dev { --panel: var(--deep); background: var(--panel); }
.door--esports { --panel: var(--steel); background: var(--panel); }
.door > :not(.door__bg) { position: relative; z-index: 1; }
/* 背景の線画（スロット / アーケードコントローラー） */
.door__bg {
  position: absolute; pointer-events: none;
  color: #fff; opacity: .14;
  transition: opacity .4s, transform .6s cubic-bezier(.2, .7, .2, 1);
}
.door--dev .door__bg { width: 58%; right: -4%; bottom: -10%; transform: rotate(-6deg); }
.door--esports .door__bg { width: 70%; right: -6%; bottom: -6%; transform: rotate(-8deg); }
.door:hover .door__bg { opacity: .22; }
.door--dev:hover .door__bg { transform: rotate(-3deg) translateY(-6px); }
.door--esports:hover .door__bg { transform: rotate(-5deg) translateY(-6px); }
.door:hover { transform: translateY(-6px); box-shadow: 0 18px 40px -18px rgba(39, 92, 116, .55); }
.door__label {
  font-family: var(--latin); font-weight: 300;
  font-size: clamp(48px, 6vw, 80px); line-height: 1; letter-spacing: .02em;
}
.door__name { margin-top: 28px; font-size: clamp(20px, 2vw, 24px); font-weight: 700; letter-spacing: .08em; }
.door__text { margin-top: 12px; font-size: 16px; line-height: 1.8; }
.door__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.door__tags span { padding: 3px 12px; border: 1px solid rgba(255, 255, 255, .55); font-size: 13px; letter-spacing: .04em; }
.door__more {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto; padding-top: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, .45); padding-bottom: 10px;
  font-size: 15px; letter-spacing: .1em;
}
.door__arrow { font-family: var(--latin); font-size: 20px; transition: transform .3s; }
.door:hover .door__arrow { transform: translateX(6px); }

@media (max-width: 768px) {
  .doors { grid-template-columns: 1fr; }
  .door { min-height: 0; }
  .door__more { margin-top: 0; }
  .doors__cat { width: 52px; top: -37px; left: auto; right: 16px; transform: none !important; }
}

/* ---------- 最初の画面（PC）: ヒーロー + 事業の入口を 1 画面に収める ---------- */
@media (min-width: 769px) {
  .first-view { display: flex; flex-direction: column; min-height: calc(100svh - 72px); }
  .first-view .hero {
    display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: end;
    column-gap: clamp(40px, 6vw, 112px); width: 100%;
    padding-top: clamp(24px, 6vh, 88px);
  }
  .first-view .hero__logo { grid-column: 1; width: clamp(200px, min(26vw, 34vh), 420px); margin-bottom: clamp(14px, 3vh, 36px); }
  .first-view .hero__title { grid-column: 1; font-size: clamp(30px, min(4.8vw, 7.4vh), 76px); }
  .first-view .hero__side { grid-column: 2; grid-row: 1 / span 2; align-self: end; padding-bottom: .4em; }
  .first-view .hero__lead { margin: 0; font-size: clamp(15px, min(1.4vw, 2.3vh), 18px); }
  .first-view .hero .spectrum { margin-top: clamp(16px, 3vh, 32px); }
  .first-view .business { flex: 1; display: flex; flex-direction: column; padding-top: clamp(56px, 8vh, 96px); padding-bottom: clamp(24px, 5vh, 64px); }
  .first-view .doors { flex: 1; width: 100%; }
  .first-view .door { min-height: clamp(220px, 38vh, 420px); padding: clamp(20px, 3.6vh, 44px) clamp(28px, 3.4vw, 48px); }
  .first-view .door__label { font-size: clamp(40px, min(5.6vw, 8vh), 80px); }
  .first-view .door__name { margin-top: clamp(10px, 2.4vh, 26px); }
  .first-view .door__text { margin-top: clamp(4px, 1vh, 12px); }
  .first-view .door__tags { margin-top: clamp(10px, 2.2vh, 24px); }
  .first-view .door__more { padding-top: clamp(14px, 2.6vh, 32px); }
}
/* 高さの低い画面では説明文を省いて入口を収める（タグで内容は伝わる） */
@media (min-width: 769px) and (max-height: 760px) {
  .first-view .door__text { display: none; }
}

/* ---------- ニュース ---------- */
.news-list { border-top: 1px solid var(--rule); }
.news-list__row {
  display: grid; grid-template-columns: 110px 104px 1fr; align-items: baseline; gap: 16px;
  padding: 22px 4px; border-bottom: 1px solid var(--rule);
  text-decoration: none; transition: background .2s;
}
a.news-list__row:hover { background: rgba(255, 255, 255, .7); }
a.news-list__row:hover .news-list__title { color: var(--steel); }
.news-list time { font-family: var(--latin); font-size: 16px; letter-spacing: .06em; color: var(--muted); }
.news-list__cat { justify-self: start; padding: 0 10px; border: 1px solid currentColor; color: var(--steel); font-size: 13px; line-height: 1.9; }
.news-list__cat--company { color: var(--ink); }
.news-list__cat--dev { color: var(--deep); }
.news-list__title { font-size: 16px; line-height: 1.7; transition: color .2s; }
@media (max-width: 640px) {
  .news-list__row { grid-template-columns: auto 1fr; row-gap: 6px; }
  .news-list__title { grid-column: 1 / -1; }
}

/* ---------- 会社概要 ---------- */
.company { border-top: 1px solid var(--ink); }
.company > div { display: grid; grid-template-columns: 200px 1fr; padding: 20px 4px; border-bottom: 1px solid var(--rule); }
.company dt { color: var(--muted); font-size: 15px; letter-spacing: .1em; }
.company dd { margin: 0; font-size: 16px; }
@media (max-width: 640px) {
  .company > div { grid-template-columns: 1fr; gap: 2px; padding: 16px 0; }
  .company dt { font-size: 13px; }
  }

/* ---------- お問い合わせ ---------- */
.block--contact { background: var(--mist); }
.contact__text { margin-top: 0; margin-bottom: 20px; }
.contact__mail-wrap { margin-top: 0; margin-bottom: 0; }
.contact__mail {
  display: inline-block;
  font-family: var(--latin); font-weight: 300;
  font-size: clamp(26px, 4.4vw, 52px); letter-spacing: .03em;
  color: var(--deep); text-decoration: none;
  border-bottom: 1px solid currentColor; line-height: 1.4;
  transition: color .2s;
  overflow-wrap: anywhere;
}
.contact__mail:hover { color: var(--signal); }

/* ---------- 遊技機開発: 業務一覧 ---------- */
.services { display: grid; grid-template-columns: repeat(3, 1fr); column-gap: 56px; border-top: 1px solid var(--ink); }
.services li { position: relative; padding: 28px 0 32px; border-bottom: 1px solid var(--rule); }
/* 列間の縦罫線（ギャップの中央） */
.services li + li::before { content: ""; position: absolute; top: 0; bottom: 0; left: -28px; border-left: 1px solid var(--rule); }
/* 業務ごとのイメージ（線画。写真に差し替える場合は .services__img 内を img に） */
.services__img {
  display: grid; place-items: center; aspect-ratio: 4 / 3; margin-bottom: 22px;
  background: var(--mist); color: var(--deep);
}
.services__img svg { width: 78%; height: auto; }
.services__img img { width: 100%; height: 100%; object-fit: cover; }
.services h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; letter-spacing: .06em; color: var(--deep); }
.services p { margin: 0; font-size: 16px; color: var(--muted); }
@media (max-width: 768px) {
  .services { grid-template-columns: 1fr; }
  .services li { padding: 22px 0; }
  .services li + li::before { display: none; }
}

/* ---------- Footer ---------- */
.c-footer { padding-top: 64px; border-top: 1px solid var(--rule); }
.c-footer__inner {
  max-width: calc(var(--wrap) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter) 48px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px;
}
.c-footer__logo img { height: 28px; width: auto; }
.c-footer__nav { display: flex; flex-wrap: wrap; gap: 8px 28px; font-size: 14px; }
.c-footer__nav a { text-decoration: none; }
.c-footer__nav a:hover { color: var(--steel); }
.c-footer__copy { margin: 0; padding: 14px var(--gutter); text-align: center; font-family: var(--latin); font-size: 13px; letter-spacing: .08em; color: var(--muted); }

/* ---------- Motion ---------- */
.reveal { opacity: 0; translate: 0 16px; transition: opacity .8s ease-out, translate .8s ease-out, transform .4s cubic-bezier(.2, .7, .2, 1), box-shadow .4s; }
.reveal.is-visible { opacity: 1; translate: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; translate: none; transition: none; }
  .door, .door__arrow { transition: none; }
}