/* タイトル未定 — 公式サイト共通スタイル
   配色: 深緑基調 + ライトグリーンのアクセント。純黒/純白は使わない。
   モチーフ: 体を塗って擬態 → ペンキ飛沫(blob)をセクション/見出しの装飾に。 */

:root {
  --green-950: #10201B; /* 最暗部(純黒ではない) */
  --green-900: #142621; /* 背景の底 */
  --green-800: #1C342C; /* 基調 */
  --green-700: #234339;
  --green-600: #2A4A3C; /* カード面 */
  --green-500: #335A49;
  --line:      #3A5D4D;
  --accent:    #78DC96; /* ライトグリーン アクセント */
  --accent-deep:#4FB877;
  --coral:     #F5907B; /* 遊びの差し色(ゲーム内パレット由来) */
  --sun:       #F2CE6A;
  --text:      #EAF5EC; /* オフホワイト(純白ではない) */
  --text-dim:  #A7C4B3;
  --text-mute: #7E9C8B;

  --maxw: 1120px;
  --radius: 18px;
  --shadow: 0 18px 44px -20px rgba(8, 20, 16, .7);
  --font: "M PLUS Rounded 1c", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-weight: 400;
  color: var(--text);
  background: var(--green-900);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-deep); }

h1, h2, h3 { font-weight: 800; line-height: 1.18; letter-spacing: .01em; margin: 0; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.eyebrow {
  display: inline-block;
  font-weight: 700;
  font-size: .78rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 14px;
}

.section { padding: clamp(64px, 10vw, 132px) 0; position: relative; }
.section-title { font-size: clamp(1.9rem, 4.4vw, 3rem); font-weight: 900; }
.section-lead { color: var(--text-dim); font-size: 1.08rem; max-width: 56ch; margin: 18px 0 0; }

/* ---------- ヘッダ ---------- */
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(16, 32, 27, .78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(120, 220, 150, .14);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 900; font-size: 1.12rem; color: var(--text); }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.nav { display: flex; gap: 26px; align-items: center; }
.nav a { color: var(--text-dim); font-weight: 500; font-size: .96rem; }
.nav a:hover { color: var(--accent); }
@media (max-width: 620px) { .nav a.nav-hide { display: none; } }

/* ---------- ヒーロー ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex; align-items: center;
  padding: 120px 0 96px;
  background-image:
    linear-gradient(178deg, rgba(16,32,27,.58) 0%, rgba(20,38,33,.30) 38%, rgba(16,32,27,.90) 82%, var(--green-900) 100%),
    url("images/hero-arena.jpg");
  background-size: cover;
  background-position: center 42%;
  overflow: hidden;
}
.hero::after { /* 下端をなじませる */
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 120px;
  background: linear-gradient(180deg, transparent, var(--green-900));
}
.hero-inner { position: relative; z-index: 2; max-width: 860px; }
.hero .kicker {
  display: inline-block; font-weight: 700; letter-spacing: .28em; text-transform: uppercase;
  font-size: .82rem; color: var(--accent);
  padding: 7px 16px; border: 1px solid rgba(120,220,150,.4); border-radius: 999px;
  background: rgba(16,32,27,.35);
}
.hero h1 {
  font-size: clamp(2.8rem, 8vw, 5.6rem);
  font-weight: 900; letter-spacing: .005em;
  margin: 22px 0 8px;
  text-shadow: 0 6px 30px rgba(8,18,14,.5);
}
@media (min-width: 620px) { .hero h1 { white-space: nowrap; } } /* デスクトップは1行 */
.hero .en-sub {
  font-weight: 700; letter-spacing: .16em; color: var(--accent);
  font-size: clamp(.95rem, 2.4vw, 1.3rem); text-transform: uppercase;
}
.hero .concept {
  font-size: clamp(1.05rem, 2.6vw, 1.5rem); font-weight: 500;
  color: var(--text); margin: 24px 0 0; max-width: 40ch;
  text-shadow: 0 3px 18px rgba(8,18,14,.6);
}

/* Coming soon バッジ列 */
.badges { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.badge {
  display: inline-flex; flex-direction: column; align-items: flex-start;
  gap: 2px; padding: 11px 18px 10px;
  border-radius: 14px; border: 1px solid rgba(120,220,150,.32);
  background: rgba(26,44,37,.66); backdrop-filter: blur(6px);
  min-width: 118px;
}
.badge .b-plat { font-weight: 800; font-size: 1rem; color: var(--text); }
.badge .b-soon { font-weight: 700; font-size: .66rem; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); }

/* ---------- ペンキ飛沫モチーフ ---------- */
.splat { position: absolute; pointer-events: none; z-index: 1; opacity: .9; }
.splat svg { display: block; width: 100%; height: 100%; }
.hero .splat-1 { width: 210px; height: 210px; top: 12%; right: -34px; opacity: .5; transform: rotate(18deg); }
.hero .splat-2 { width: 150px; height: 150px; bottom: 16%; left: -30px; opacity: .35; transform: rotate(-24deg); }

/* 見出し脇の小さな塗りはね */
.title-row { display: flex; align-items: center; gap: 16px; }
.title-splat { width: 46px; height: 46px; flex: none; color: var(--accent); }
.title-splat svg { width: 100%; height: 100%; fill: currentColor; }

/* ---------- コンセプト ---------- */
.concept-section { background: var(--green-900); }
.concept-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(28px, 5vw, 68px); align-items: center; }
.concept-copy p { color: var(--text-dim); font-size: 1.1rem; margin: 16px 0 0; }
.concept-copy strong { color: var(--text); font-weight: 700; }
.frame {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  background: var(--green-800);
}
.frame img { width: 100%; }
.frame.tilt-a { transform: rotate(-1.4deg); }
.frame.tilt-b { transform: rotate(1.4deg); }
@media (max-width: 780px) { .concept-grid { grid-template-columns: 1fr; } .frame.tilt-a, .frame.tilt-b { transform: none; } }

/* ---------- 特徴3本(互い違い) ---------- */
.features { background: var(--green-950); }
.feature {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 72px);
  align-items: center; margin-top: clamp(56px, 8vw, 96px);
}
.feature:first-of-type { margin-top: clamp(40px, 6vw, 64px); }
.feature.flip .feat-media { order: -1; } /* 互い違い: 偶数段は画像を左へ */
.feature .feat-num {
  width: 66px; height: 66px; display: grid; place-items: center;
  font-weight: 900; font-size: 1.35rem; color: var(--green-950);
  background: var(--accent);
  border-radius: 62% 38% 54% 46% / 55% 46% 54% 45%; /* 有機的な塗り玉 */
  box-shadow: 0 10px 26px -12px rgba(79,184,119,.6);
  margin-bottom: 20px;
}
.feature.flip .feat-num { background: var(--coral); box-shadow: 0 10px 26px -12px rgba(245,144,123,.55); }
.feature:nth-of-type(3) .feat-num { background: var(--sun); box-shadow: 0 10px 26px -12px rgba(242,206,106,.55); }
.feature h3 { font-size: clamp(1.4rem, 3.2vw, 2rem); font-weight: 800; }
.feature p { color: var(--text-dim); font-size: 1.08rem; margin: 14px 0 0; }
@media (max-width: 780px) {
  .feature { grid-template-columns: 1fr; gap: 22px; }
  .feature.flip .feat-media { order: 0; }
}

/* ---------- スクリーンショット ---------- */
.gallery { background: var(--green-800); }
.shot-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 42px; }
.shot { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); }
.shot img { width: 100%; height: 100%; object-fit: cover; }
.wip-note { display: inline-block; margin-top: 20px; color: var(--text-mute); font-size: .86rem; font-weight: 500; }
.wip-tag {
  position: absolute; left: 12px; bottom: 12px; z-index: 2;
  font-size: .68rem; font-weight: 700; letter-spacing: .06em;
  color: var(--text); background: rgba(16,32,27,.74);
  border: 1px solid rgba(120,220,150,.28); padding: 4px 10px; border-radius: 999px;
}
@media (max-width: 620px) { .shot-grid { grid-template-columns: 1fr; } }

/* ---------- プラットフォーム ---------- */
.platforms { background: var(--green-900); text-align: center; }
.plat-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-top: 40px; }
.plat {
  flex: 1 1 200px; max-width: 250px;
  padding: 26px 20px; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--green-600);
}
.plat .p-dot { width: 12px; height: 12px; border-radius: 60% 40% 55% 45%; background: var(--accent); margin: 0 auto 14px; }
.plat:nth-child(2) .p-dot { background: var(--coral); }
.plat:nth-child(3) .p-dot { background: var(--sun); }
.plat:nth-child(4) .p-dot { background: var(--accent-deep); }
.plat .p-name { font-weight: 800; font-size: 1.16rem; color: var(--text); }
.plat .p-soon { font-weight: 700; font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-dim); margin-top: 6px; }

/* ---------- フッター ---------- */
.site-footer { background: var(--green-950); border-top: 1px solid rgba(120,220,150,.12); padding: 56px 0 44px; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 28px; align-items: flex-start; }
.footer-brand { display: flex; align-items: center; gap: 12px; font-weight: 900; font-size: 1.05rem; }
.footer-brand img { width: 30px; height: 30px; border-radius: 8px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a, .footer-links span { color: var(--text-dim); font-weight: 500; font-size: .95rem; }
.footer-meta { color: var(--text-mute); font-size: .84rem; margin-top: 30px; }

/* ---------- privacy 本文 ---------- */
.legal { background: var(--green-900); padding-top: clamp(48px, 7vw, 84px); }
.legal .wrap { max-width: 820px; }
.legal h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 900; }
.legal .updated { color: var(--text-mute); font-size: .9rem; margin: 10px 0 0; }
.legal h2 {
  font-size: clamp(1.25rem, 2.8vw, 1.6rem); font-weight: 800;
  margin: 46px 0 4px; padding-left: 16px; position: relative;
}
.legal h2::before {
  content: ""; position: absolute; left: 0; top: .35em; width: 7px; height: 1.1em;
  background: var(--accent); border-radius: 40% 60% 55% 45%;
}
.legal p { color: var(--text-dim); font-size: 1.03rem; margin: 14px 0 0; }
.legal ul { color: var(--text-dim); font-size: 1.03rem; margin: 14px 0 0; padding-left: 22px; }
.legal li { margin: 8px 0; }
.legal strong { color: var(--text); font-weight: 700; }
.legal .callout {
  margin-top: 18px; padding: 18px 20px; border-radius: 14px;
  background: var(--green-700); border: 1px solid var(--line);
  color: var(--text-dim); font-size: .98rem;
}