/* ============================================================
   LOCAL SHIFT — styles.css
   カラーパレット・余白は :root の CSS変数で管理。
   演出は transform / opacity 中心。画面構成は Scene ごとに変化。
   ============================================================ */

/* ---------- 変数 ---------- */
:root {
  /* 背景 */
  --bg: #05070f;
  --bg-2: #0a0e1c;
  --bg-3: #10152a;

  /* 文字 */
  --ink: #eaf0fb;
  --ink-soft: #b9c4dc;
  --ink-dim: #7f8aa6;

  /* 光（オーロラ） */
  --blue: #5b9dff;
  --purple: #a070ff;
  --teal: #4fd8c8;

  /* ライン / パネル */
  --line: rgba(180, 200, 255, 0.14);
  --panel: rgba(20, 28, 52, 0.42);
  --panel-strong: rgba(24, 34, 64, 0.7);

  /* 余白・寸法 */
  --pad-x: clamp(1.25rem, 5vw, 6rem);
  --maxw: 1200px;
  --radius: 14px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --font: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;
}

/* ---------- リセット ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
ul { list-style: none; }

/* フォーカス表示（アクセシビリティ） */
:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 背景レイヤー ---------- */
.bg { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
#bgCanvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

.bg__aurora {
  position: absolute; inset: -20%;
  background:
    radial-gradient(40% 35% at 25% 20%, rgba(91,157,255,0.16), transparent 70%),
    radial-gradient(45% 40% at 80% 30%, rgba(160,112,255,0.14), transparent 70%),
    radial-gradient(50% 45% at 55% 85%, rgba(79,216,200,0.10), transparent 70%);
  filter: blur(30px);
  opacity: 0.9;
}

.bg__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(120% 120% at 50% 40%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(120% 120% at 50% 40%, #000 30%, transparent 80%);
  opacity: 0.5;
}

.bg__vignette {
  position: absolute; inset: 0;
  background: radial-gradient(120% 120% at 50% 50%, transparent 55%, rgba(0,0,0,0.55) 100%);
}

/* ---------- スクロール進捗 ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px;
  z-index: 60; background: rgba(255,255,255,0.05);
}
.scroll-progress span {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--blue), var(--purple), var(--teal));
  box-shadow: 0 0 12px rgba(91,157,255,0.7);
}

/* ---------- カスタムカーソル ---------- */
.cursor { position: fixed; top: 0; left: 0; z-index: 90; pointer-events: none; display: none; mix-blend-mode: screen; }
.cursor__dot { position: absolute; width: 6px; height: 6px; border-radius: 50%; background: var(--teal); transform: translate(-50%, -50%); }
.cursor__ring {
  position: absolute; width: 34px; height: 34px; border: 1px solid rgba(91,157,255,0.6);
  border-radius: 50%; transform: translate(-50%, -50%); transition: width .2s var(--ease), height .2s var(--ease), border-color .2s;
}
.cursor.is-hover .cursor__ring { width: 54px; height: 54px; border-color: var(--teal); }
/* カスタムカーソルは「JS 有効 かつ デスクトップ（精密ポインタ）」のみ表示し、
   そのときだけ通常カーソルを非表示にする。タッチ・reduced-motion・JS無効時は二重にならない。 */
@media (hover: hover) and (pointer: fine) {
  html.js .cursor { display: block; }
  html.js body { cursor: none; }
}

/* ---------- ナビゲーション ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem var(--pad-x);
  background: linear-gradient(180deg, rgba(5,7,15,0.7), transparent);
  backdrop-filter: blur(6px);
}
.nav__brand { font-weight: 700; letter-spacing: 0.18em; font-size: 0.95rem; }
.nav__links { display: flex; gap: 1.6rem; align-items: center; }
.nav__links a { font-size: 0.8rem; letter-spacing: 0.14em; color: var(--ink-soft); transition: color .25s; position: relative; }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 1px;
  background: var(--teal); transition: width .3s var(--ease);
}
.nav__links a:hover, .nav__links a.is-current { color: var(--ink); }
.nav__links a:hover::after, .nav__links a.is-current::after { width: 100%; }
.nav__cta {
  padding: 0.5rem 1.1rem; border: 1px solid var(--line); border-radius: 999px;
  color: var(--ink) !important;
}
.nav__cta:hover { border-color: var(--teal); box-shadow: 0 0 18px rgba(79,216,200,0.25); }

/* モバイルトグル */
.nav__toggle { display: none; width: 42px; height: 42px; position: relative; }
.nav__toggle span { position: absolute; left: 9px; right: 9px; height: 1.5px; background: var(--ink); transition: transform .3s var(--ease), opacity .3s; }
.nav__toggle span:nth-child(1) { top: 17px; }
.nav__toggle span:nth-child(2) { bottom: 17px; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

.nav-panel {
  position: fixed; top: 64px; right: var(--pad-x); z-index: 49;
  display: flex; flex-direction: column; gap: 0.4rem;
  background: var(--panel-strong); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem 1.4rem; backdrop-filter: blur(10px);
  opacity: 0; transform: translateY(-12px) scale(0.98); pointer-events: none;
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.nav-panel.is-open { opacity: 1; transform: none; pointer-events: auto; }
.nav-panel a { padding: 0.5rem 0; color: var(--ink-soft); letter-spacing: 0.12em; font-size: 0.9rem; }
.nav-panel a:hover { color: var(--ink); }

/* ---------- Scene 番号 ---------- */
.scene-counter {
  position: fixed; left: clamp(0.8rem, 2vw, 2rem); top: 50%; transform: translateY(-50%);
  z-index: 40; font-variant-numeric: tabular-nums; letter-spacing: 0.1em;
  color: var(--ink-soft); font-size: 0.85rem; writing-mode: vertical-rl;
  opacity: 0.7;
}
.scene-counter span { color: var(--ink-dim); }
@media (max-width: 820px) { .scene-counter { display: none; } }

.scene--memory { background: var(--bg); }
.scene--cta { background: var(--bg); }
main { position: relative; z-index: 10; }
.scene {
  position: relative;
  min-height: 100vh;
  padding: clamp(5rem, 12vh, 9rem) var(--pad-x);
  display: flex; flex-direction: column; justify-content: center;
}
.note { margin-top: 1.5rem; font-size: 0.78rem; color: var(--ink-dim); letter-spacing: 0.04em; }

/* Reveal 初期状態（JS で表示） */
/* 基本状態は表示。JavaScript 実行時は html.js でインタラクティブUIを有効にする。
   GSAP 利用可能かつ通常モーション時のみ html.motion-ready で
   アニメーション用の初期非表示を適用する。GSAP なし / reduced-motion 時は
   html.js のままとし、すべての主要文章と CTA を表示したままにする。 */
html.motion-ready .reveal-fade { opacity: 0; transform: translateY(24px); }
html.motion-ready .reveal-lines { opacity: 0; transform: translateY(28px); }

/* ============================================================
   Scene 00 : イントロ
   ============================================================ */
.scene--intro {
  align-items: center; text-align: center; min-height: 100vh;
  background: radial-gradient(80% 80% at 50% 50%, var(--bg-2), var(--bg));
}
.intro { position: relative; }
.intro__title {
  font-size: clamp(2.6rem, 11vw, 7.5rem); font-weight: 800; letter-spacing: 0.06em;
  display: flex; gap: 0.04em; justify-content: center; flex-wrap: wrap;
}
.intro__title .ch { display: inline-block; }
/* JS 有効時かつ通常モーション時のみ、文字を1文字ずつ表示するため非表示にする */
html.motion-ready .intro__title .ch { opacity: 0; transform: translateY(0.4em); }
html.motion-ready .intro__sub {
  opacity: 0;
}
.intro__sub {
  margin-top: 1.4rem; font-size: clamp(0.8rem, 2.4vw, 1.1rem); letter-spacing: 0.42em;
  color: var(--ink-soft);
}
.intro__beam {
  position: absolute; left: 50%; top: 50%; width: 2px; height: 60vh;
  transform: translate(-50%, -50%) scaleY(0);
  background: linear-gradient(180deg, transparent, var(--blue), var(--teal), transparent);
  filter: blur(1px); opacity: 0.0;
}

/* ============================================================
   Scene 01 : Hero
   ============================================================ */
.scene--hero { overflow: hidden; }
.hero { max-width: var(--maxw); margin: 0 auto; width: 100%; }
.hero__kicker { font-size: 0.78rem; letter-spacing: 0.4em; color: var(--ink-dim); margin-bottom: 2rem; }
.hero__copy { font-weight: 800; line-height: 1.2; font-size: clamp(2rem, 6.5vw, 5.2rem); }
.hero__line { display: block; }
.hero__line--a { color: var(--ink); }
.hero__line--b {
  background: linear-gradient(100deg, var(--blue), var(--purple), var(--teal));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-top: 0.2em;
  text-wrap: balance;
  line-height: 1.28;
}
/* 「あなたのPC」などを途中で分断させない */
.hero__nowrap { white-space: nowrap; }
.hero__sub { margin-top: 2.2rem; font-size: clamp(1rem, 2.4vw, 1.4rem); color: var(--ink-soft); max-width: 38ch; }
/* Hero の可視説明：大見出しより弱く、本文の導入として配置 */
.hero__explain {
  margin-top: 1.6rem; font-size: clamp(0.92rem, 2vw, 1.12rem); color: var(--ink-soft);
  line-height: 1.85; max-width: 46ch; text-align: left;
}

.scroll-indicator {
  position: absolute; left: 50%; bottom: 2.2rem; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.6rem;
  font-size: 0.7rem; letter-spacing: 0.3em; color: var(--ink-dim);
}
.scroll-indicator span {
  width: 1px; height: 46px; background: linear-gradient(var(--ink-dim), transparent);
  position: relative; overflow: hidden;
}
.scroll-indicator span::after {
  content: ""; position: absolute; top: -50%; left: 0; width: 100%; height: 50%;
  background: var(--teal); animation: scrollPulse 2.2s var(--ease) infinite;
}
@keyframes scrollPulse { 0% { top: -50%; } 100% { top: 100%; } }

/* ============================================================
   Scene 02 : クラウド → ローカル
   ============================================================ */
.cloud { max-width: var(--maxw); margin: 0 auto; width: 100%; text-align: center; }
.cloud__title { font-size: clamp(1.5rem, 4.5vw, 2.8rem); font-weight: 800; line-height: 1.35; margin-bottom: 2rem; }
.cloud__copy, .cloud__copy2 {
  font-size: clamp(1.3rem, 4vw, 2.6rem); font-weight: 700; line-height: 1.5;
}
.cloud__copy2 { margin-top: 3rem; color: var(--ink); }

.cloud__stage {
  position: relative; height: clamp(220px, 36vw, 380px); margin: 2.5rem 0;
  display: flex; align-items: center; justify-content: space-between;
}
.cloud__node {
  font-size: clamp(0.9rem, 2.6vw, 1.4rem); letter-spacing: 0.2em; font-weight: 700;
  padding: 1.2rem 1.6rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); position: relative; z-index: 2;
}
.cloud__node--cloud { color: var(--blue); align-self: flex-start; }
.cloud__node--pc { color: var(--teal); align-self: flex-end; }
.cloud__stream {
  position: absolute; left: 18%; right: 18%; top: 50%; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--purple), var(--teal));
  transform: scaleX(0); transform-origin: left center; opacity: 0.6;
  box-shadow: 0 0 14px rgba(91,157,255,0.5);
}
/* モバイル用の流向ヒント（縦並び時に stream が消える代わりに表示） */
.cloud__flow {
  display: none;
  align-items: center; justify-content: center; gap: 0.4rem;
  color: var(--ink-dim); font-size: 0.78rem; letter-spacing: 0.2em;
}
.cloud__flow::before { content: "↓"; color: var(--teal); font-size: 1.1rem; }

/* 比較 */
.compare {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem;
  margin-top: 1rem; text-align: left;
}
.compare__col {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.6rem 1.8rem;
  background: var(--panel); backdrop-filter: blur(6px);
}
.compare__col--cloud { border-color: rgba(91,157,255,0.3); }
.compare__col--local { border-color: rgba(79,216,200,0.3); }
.compare__title { font-size: 1.1rem; letter-spacing: 0.1em; margin-bottom: 1rem; }
.compare__col--cloud .compare__title { color: var(--blue); }
.compare__col--local .compare__title { color: var(--teal); }
.compare__col li { padding: 0.5rem 0; color: var(--ink-soft); border-top: 1px solid var(--line); font-size: 0.95rem; }
.compare__col li:first-child { border-top: none; }

/* ============================================================
   Scene 03 : メモリ選択
   ============================================================ */
.memory { max-width: var(--maxw); margin: 0 auto; width: 100%; }
.memory__head { text-align: center; margin-bottom: 3rem; }
.memory__title { font-size: clamp(1.5rem, 4.5vw, 3rem); font-weight: 800; line-height: 1.35; }
.memory__sub { margin-top: 1rem; color: var(--ink-soft); font-size: clamp(1rem, 2.4vw, 1.3rem); }

.memory__body { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 5rem); align-items: center; }

/* PC オブジェクト（抽象図形） */
.pc { position: relative; aspect-ratio: 1 / 0.78; max-width: 360px; margin: 0 auto; width: 100%; }
.pc__screen {
  position: absolute; inset: 0 0 22% 0; border: 1px solid var(--line);
  border-radius: 10px; background: linear-gradient(160deg, rgba(30,40,72,0.6), rgba(10,14,28,0.8));
  overflow: hidden; box-shadow: inset 0 0 40px rgba(91,157,255,0.06);
}
.pc__glow {
  position: absolute; inset: 0; opacity: 0.5;
  background: radial-gradient(60% 60% at 50% 60%, var(--glow, var(--blue)), transparent 70%);
  transition: background .6s var(--ease);
}
.pc__base {
  position: absolute; left: 12%; right: 12%; bottom: 6%; height: 14px; border-radius: 4px;
  background: rgba(180,200,255,0.12); border: 1px solid var(--line);
}
.pc__light {
  position: absolute; left: 50%; top: 50%; width: 10px; height: 10px; border-radius: 50%;
  transform: translate(-50%, -50%); background: var(--glow, var(--blue));
  box-shadow: 0 0 8px var(--glow, var(--blue)); transition: box-shadow .6s var(--ease), width .6s, height .6s;
}

.memory__panel { }
.memory__label { font-size: 0.78rem; letter-spacing: 0.2em; color: var(--ink-dim); margin-bottom: 1rem; }
.memory__options { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.mem-opt {
  flex: 1 1 auto; min-width: 92px; padding: 1rem 0.5rem; text-align: center;
  border: 1px solid var(--line); border-radius: 12px; background: var(--panel);
  color: var(--ink-soft); font-weight: 700; letter-spacing: 0.05em;
  transition: border-color .25s, color .25s, background .25s, transform .15s;
}
.mem-opt:hover { border-color: rgba(91,157,255,0.5); color: var(--ink); }
.mem-opt:active { transform: scale(0.96); }
.mem-opt.is-active {
  border-color: var(--teal); color: var(--ink);
  background: rgba(79,216,200,0.12); box-shadow: 0 0 24px rgba(79,216,200,0.18);
}
.memory__desc { margin-top: 1.6rem; font-size: clamp(1rem, 2.4vw, 1.25rem); color: var(--ink); min-height: 3em; }
.memory__hint { margin-top: 1.4rem; font-size: 0.82rem; color: var(--ink-soft); line-height: 1.7; max-width: 42ch; text-align: left; }
.memory__disclaimer { margin-top: 1rem; font-size: 0.8rem; color: var(--ink-dim); line-height: 1.6; }

/* ============================================================
   Scene 04 : 道具（軌道）
   ============================================================ */
.tools { max-width: var(--maxw); margin: 0 auto; width: 100%; }
.tools__head { text-align: center; margin-bottom: 3rem; }
.tools__title { font-size: clamp(1.5rem, 4.5vw, 3rem); font-weight: 800; line-height: 1.35; }
.tools__sub { margin-top: 1rem; color: var(--ink-soft); font-size: clamp(1rem, 2.4vw, 1.3rem); }

.tools__orbit { position: relative; }
.tools__center {
  position: relative; max-width: 620px; margin: 0 auto;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  aspect-ratio: auto;
}
/* JS 有効時のみ、Grid で3カードを同じセルへ重ねる（親が最長カードの高さを確保） */
html.js .tools__center {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  justify-items: center;
  min-height: 0;
}
/* 基本状態（no-JS）：3カードを縦並びで全文表示 */
.tool-card {
  position: relative; width: 100%; max-width: 480px; margin: 0 auto 1.4rem;
  padding: 2.4rem;
  border: 1px solid var(--line); border-radius: 18px;
  background: var(--panel-strong); backdrop-filter: blur(10px);
  text-align: center; opacity: 1; transform: none;
  transition: opacity .5s var(--ease), transform .5s var(--ease), border-color .5s;
}
/* JS 有効時のみ、Grid 重ね合わせタブUIに切り替え */
html.js .tool-card {
  position: relative;
  grid-area: 1 / 1;
  width: min(100%, 480px);
  margin: 0;
  opacity: 0; transform: translateY(20px) scale(0.96);
  pointer-events: none;
  visibility: hidden;
}
html.js .tool-card.is-active {
  opacity: 1; transform: none;
  pointer-events: auto;
  visibility: visible;
}
.tool-card__name { font-size: clamp(1.4rem, 4vw, 2rem); font-weight: 800; letter-spacing: 0.04em; }
.tool-card[data-tool="lmstudio"] { border-color: rgba(91,157,255,0.4); }
.tool-card[data-tool="ollama"]   { border-color: rgba(160,112,255,0.4); }
.tool-card[data-tool="hermes"]   { border-color: rgba(79,216,200,0.4); }
.tool-card__head { margin-top: 1rem; font-size: clamp(1rem, 2.4vw, 1.2rem); color: var(--ink); }
.tool-card__desc { margin-top: 0.8rem; color: var(--ink-soft); font-size: 0.95rem; }
.tool-card__glyph {
  margin-top: 1.4rem; font-size: 2.4rem; opacity: 0.65;
  color: var(--ink-soft);
}
/* ツールカードの「向いている人 / 主な役割 / 次のステップ」 */
.tool-card__steps {
  margin: 1.6rem auto 0; max-width: 420px;
  display: grid; gap: 0.8rem;
  text-align: left; padding: 0; list-style: none;
}
.tool-card__steps li {
  color: var(--ink-soft); font-size: 0.86rem; line-height: 1.7;
}
.tool-card__steps span {
  display: inline-block; min-width: 6.5em; margin-right: 0.4em;
  color: var(--ink); font-weight: 700;
}
.tool-card__who { color: var(--blue); }
.tool-card__role { color: var(--purple); }
.tool-card__next { color: var(--teal); }
.tool-card__steps .tool-card__who { color: var(--blue); }
.tool-card__steps .tool-card__role { color: var(--purple); }
.tool-card__steps .tool-card__next { color: var(--teal); }

/* タブボタンは JS 有効時のみ表示（no-JS 時は3カード縦並びで十分なため非表示） */
.tools__dots { display: none; gap: 1rem; justify-content: center; margin-top: 2.6rem; flex-wrap: wrap; }
html.js .tools__dots { display: flex; }
.tool-dot {
  padding: 0.7rem 1.4rem; border: 1px solid var(--line); border-radius: 999px;
  color: var(--ink-soft); font-size: 0.85rem; letter-spacing: 0.08em;
  transition: border-color .25s, color .25s, background .25s;
}
.tool-dot:hover { color: var(--ink); }
.tool-dot.is-active { color: var(--ink); border-color: var(--teal); background: rgba(79,216,200,0.1); }

/* ============================================================
   Scene 05 : モデル球
   ============================================================ */
.scene--models { }
.models { max-width: var(--maxw); margin: 0 auto; width: 100%; text-align: center; }
.models__head { margin-bottom: 2rem; }
.models__title { font-size: clamp(1.5rem, 4.5vw, 3rem); font-weight: 800; line-height: 1.35; }
.models__sub { margin-top: 1rem; color: var(--ink-soft); font-size: clamp(1rem, 2.4vw, 1.3rem); }

.models__stage { position: relative; height: clamp(260px, 40vw, 420px); display: flex; align-items: center; justify-content: center; }
.models__big {
  width: clamp(120px, 22vw, 220px); aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(160,112,255,0.9), rgba(91,157,255,0.4) 60%, transparent 72%);
  box-shadow: 0 0 60px rgba(160,112,255,0.4); opacity: 0.95;
}
.models__orbs { position: absolute; inset: 0; }
.model-orb {
  position: absolute; width: clamp(54px, 9vw, 92px); aspect-ratio: 1; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 35% 30%, rgba(255,255,255,0.25), rgba(91,157,255,0.35) 70%);
  border: 1px solid rgba(180,200,255,0.3);
  color: var(--ink); font-size: 0.78rem; letter-spacing: 0.08em;
  opacity: 0; transform: scale(0.4);
}
.model-orb:nth-child(1) { top: 8%;  left: 12%;  background: radial-gradient(circle at 35% 30%, rgba(79,216,200,0.5), rgba(79,216,200,0.15) 72%); }
.model-orb:nth-child(2) { top: 60%; left: 6%;   background: radial-gradient(circle at 35% 30%, rgba(91,157,255,0.5), rgba(91,157,255,0.15) 72%); }
.model-orb:nth-child(3) { top: 64%; right: 8%;  background: radial-gradient(circle at 35% 30%, rgba(160,112,255,0.5), rgba(160,112,255,0.15) 72%); }
.model-orb:nth-child(4) { top: 10%; right: 14%; background: radial-gradient(circle at 35% 30%, rgba(255,180,220,0.45), rgba(255,180,220,0.12) 72%); }
.model-orb i { font-style: normal; }

.models__caption { margin-top: 2.5rem; }
.models__line {
  font-size: clamp(1.1rem, 3vw, 1.8rem); font-weight: 700; line-height: 1.7;
  opacity: 1; transform: none;
}
/* アニメーション用の初期非表示は JS 有効かつ通常モーション時のみ */
html.motion-ready .models__line {
  opacity: 0; transform: translateY(20px);
}
.models__line:nth-child(2) { color: var(--ink-soft); }

/* ============================================================
   Scene 06 : 降臨
   ============================================================ */
.scene--descend { text-align: center; align-items: center; overflow: hidden;
  background: radial-gradient(90% 80% at 50% 45%, var(--bg-3), var(--bg) 90%);
}
.descend { max-width: 900px; margin: 0 auto; position: relative; }
.descend__beam {
  position: absolute; left: 50%; top: -40vh; width: 3px; height: 70vh;
  transform: translateX(-50%) scaleY(0); transform-origin: top center;
  background: linear-gradient(180deg, transparent, var(--teal), var(--blue), transparent);
  opacity: 0.55; filter: blur(1px);
}
.descend__copy {
  font-size: clamp(1.8rem, 6vw, 4rem); font-weight: 800; line-height: 1.4;
  background: linear-gradient(100deg, var(--blue), var(--teal));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.descend__sub { margin-top: 2rem; color: var(--ink-soft); font-size: clamp(1rem, 2.6vw, 1.4rem); }
.descend__core {
  width: clamp(120px, 20vw, 200px); aspect-ratio: 1; border-radius: 50%; margin: 3rem auto 0;
  background: radial-gradient(circle at 40% 35%, rgba(255,255,255,0.9), var(--teal) 45%, var(--blue) 75%, transparent 82%);
  box-shadow: 0 0 80px rgba(79,216,200,0.5); opacity: 0; transform: scale(0.6);
}

/* ============================================================
   Quick Guide : ローカルAIを始める前に知る3つのこと
   ============================================================ */
.scene--guide { background: var(--bg); }
.quick-guide { max-width: var(--maxw); margin: 0 auto; width: 100%; text-align: center; }
.quick-guide__title { font-size: clamp(1.5rem, 4.5vw, 2.8rem); font-weight: 800; line-height: 1.35; margin-bottom: 2.5rem; }
.quick-guide__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem;
  text-align: left;
}
.quick-card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.6rem 1.7rem;
  background: var(--panel); backdrop-filter: blur(6px);
}
.quick-card__title { font-size: 1.05rem; font-weight: 700; letter-spacing: 0.04em; color: var(--ink); margin-bottom: 0.9rem; }
.quick-card__text { font-size: 0.92rem; color: var(--ink-soft); line-height: 1.75; }

.quick-guide__note { margin-top: 2.4rem; font-size: 0.85rem; color: var(--ink-dim); }
.quick-guide__links {
  list-style: none; margin: 1rem auto 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0.8rem 1.6rem; justify-content: center;
  max-width: 760px; text-align: left;
}
.quick-guide__links a {
  color: var(--ink-soft); font-size: 0.92rem; letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(180,200,255,0.25); padding-bottom: 2px;
  transition: color .25s, border-color .25s;
}
.quick-guide__links a:hover { color: var(--ink); border-color: var(--teal); }

@media (max-width: 820px) {
  .quick-guide__grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Scene 07 : CTA
   ============================================================ */
.scene--cta { text-align: center; align-items: center; }
.cta { max-width: 620px; margin: 0 auto; }
/* CTA を強く・コンパクトに：太字＋光の text-shadow、余白を引き締め */
.cta__title {
  font-size: clamp(1.8rem, 5.8vw, 3.6rem); font-weight: 900; line-height: 1.32;
  letter-spacing: 0.01em;
  text-shadow: 0 0 28px rgba(91,157,255,0.35), 0 0 60px rgba(160,112,255,0.18);
}
.cta__body { margin-top: 1rem; color: var(--ink); font-size: clamp(0.95rem, 2.4vw, 1.2rem); line-height: 1.7; }

.cta__buttons { margin-top: 2rem; display: flex; gap: 1.2rem; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 1.1rem 2.2rem; border-radius: 999px; font-weight: 700; letter-spacing: 0.04em;
  transition: transform .2s var(--ease), box-shadow .3s, border-color .3s, background .3s;
  will-change: transform;
}
.btn--primary {
  background: linear-gradient(100deg, var(--blue), var(--purple), var(--teal));
  color: #06121f;
  box-shadow: 0 10px 40px rgba(91,157,255,0.45);
}
/* CTA を強調：より強い glow＋わずかなスケールで押し出し */
.btn--primary:hover {
  box-shadow: 0 16px 64px rgba(79,216,200,0.6);
  transform: translateY(-2px) scale(1.03);
}
.btn--ghost { border: 1px solid var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--teal); color: var(--ink); }

.footer {
  margin-top: 5rem; padding-top: 2rem; border-top: 1px solid var(--line);
  font-size: 0.78rem; color: var(--ink-dim); letter-spacing: 0.06em;
}

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 820px) {
  .nav__links { display: none; }
  .nav__toggle { display: block; }

  .scene { min-height: auto; padding-top: 6rem; padding-bottom: 6rem; }
  .scene--hero, .scene--descend, .scene--intro { min-height: 100vh; }

  .memory__body { grid-template-columns: 1fr; gap: 3rem; }
  .compare { grid-template-columns: 1fr; }
  .cloud__stage { flex-direction: column; height: auto; gap: 1.5rem; }
  .cloud__node { align-self: center !important; width: 100%; text-align: center; }
  .cloud__stream { display: none; }
  .cloud__flow { display: flex; }
  .tools__center { aspect-ratio: auto; min-height: 320px; }
  .models__stage { height: auto; min-height: 320px; padding-top: 40px; }
  .descend__beam { top: -20vh; height: 50vh; }
}

@media (max-width: 480px) {
  .memory__options { gap: 0.5rem; }
  .mem-opt { min-width: 64px; font-size: 0.82rem; padding: 0.8rem 0.3rem; }
  .cta__buttons { flex-direction: column; gap: 0.9rem; margin-top: 1.6rem; }
  .btn { width: 100%; }
}

/* ============================================================
   prefers-reduced-motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .scroll-indicator span::after { animation: none; }
  .cursor { display: none !important; }
  html.js body { cursor: auto !important; }
  .reveal-fade, .reveal-lines, .models__line, .tool-card, .model-orb, .descend__core {
    opacity: 1 !important; transform: none !important;
  }
  .intro__title .ch { opacity: 1 !important; transform: none !important; }
  .intro__sub { opacity: 1 !important; }
  * { transition-duration: 0.001ms !important; }
}

/* ============================================================
   forced-colors（Windows 高コントラスト等）
   グラデーション文字が消えないよう、通常色へ戻す
   ============================================================ */
@media (forced-colors: active) {
  .hero__line--b,
  .descend__copy {
    background: none;
    color: CanvasText;
    -webkit-text-fill-color: CanvasText;
  }
  .btn--primary {
    background: ButtonFace;
    color: ButtonText;
    border: 1px solid ButtonText;
    box-shadow: none;
    forced-color-adjust: auto;
  }
}

/* ============================================================
   VISUAL GUIDES 導線（トップからの回遊）
   既存CTAより視覚優先度を下げ、no-JS / reduced-motion でも可視
   ============================================================ */
.scene-link {
  margin-top: 1.4rem;
  font-size: 0.95rem;
}
.scene-link a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 216, 200, 0.4);
  padding-bottom: 2px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.scene-link a:hover,
.scene-link a:focus-visible {
  color: #fff;
  border-bottom-color: var(--teal);
}

/* Quick Guide 内の VISUAL GUIDES ハブ導線カード */
.guide-hub-link {
  display: block;
  margin: 1.8rem 0 0.4rem;
  padding: 1.4rem 1.6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(91, 157, 255, 0.08), rgba(160, 112, 255, 0.06));
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.guide-hub-link:hover,
.guide-hub-link:focus-visible {
  border-color: var(--blue);
  transform: translateY(-2px);
}
.guide-hub-link__kicker {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
  margin-bottom: 0.4rem;
}
.guide-hub-link__title {
  display: block;
  font-size: clamp(1.1rem, 2.6vw, 1.4rem);
  font-weight: 800;
  margin-bottom: 0.4rem;
}
.guide-hub-link__text {
  display: block;
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.7;
}