/* ============================================================
   ORIHALCON ENGINEERING — Official Site v2
   世界観: 夜の製鋼所の深い緑 × 生成りの紙 × 鍛えた鉄の白
   規律: 色8 / 書体3 / イージング2 / 角丸2 — トークン外の値を使わない
   ============================================================ */

:root {
  /* ---- color tokens ---- */
  --ink:        #060f0a;                 /* 夜の漆黒(緑がかる) */
  --ink-2:      #0b1811;                 /* ダーク面のカード地 */
  --paper:      #f1f5ee;                 /* 生成りの緑白 */
  --paper-2:    #e8efe4;                 /* 紙の陰 */
  --sumi:       #15231b;                 /* 紙面上の墨 */
  --sumi-soft:  #3f5349;                 /* 紙面上の補助文字 */
  --fog:        #a7bcae;                 /* 闇上の灰緑 */
  --green:      #189a62;                 /* ブランド緑(明) */
  --green-deep: #0e5c3f;                 /* ロゴの深緑 */
  --mint:       #86dcae;                 /* 発光・グロー専用 */
  --gold:       #c8ad6b;                 /* 稀少アクセント(印・選択) */
  --line-d: rgba(233, 242, 235, 0.13);   /* 闇のヘアライン */
  --line-l: rgba(21, 60, 40, 0.14);      /* 紙のヘアライン */

  /* ---- typography ---- */
  --font-display: "Shippori Mincho B1", "Hiragino Mincho ProN", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-mono: "IBM Plex Mono", "Menlo", monospace;

  /* ---- motion ---- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.45, 0, 0.15, 1);

  /* ---- layout ---- */
  --pad: clamp(22px, 5vw, 76px);
  --container: 1180px;
  --header-h: 76px;
  --r-card: 14px;
  --r-pill: 999px;
}

/* ============ base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; overflow-x: clip; }

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 15.5px;
  line-height: 2;
  letter-spacing: 0.04em;
  color: var(--sumi);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; background: none; border: none; cursor: pointer; color: inherit; }

::selection { background: var(--gold); color: var(--ink); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--pad); }

/* 紙の質感(feTurbulence 粒状ノイズ) */
.grain {
  position: fixed; inset: -50%; z-index: 90; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.5 0'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.05;
}

/* ============ typography utilities ============ */
.kicker {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 14px;
}
.kicker::before { content: ""; width: 34px; height: 1px; background: currentColor; opacity: 0.6; }
.kicker.center { justify-content: center; }
.kicker.center::after { content: ""; width: 34px; height: 1px; background: currentColor; opacity: 0.6; }


.sec-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.45;
  letter-spacing: 0.08em;
  margin: 22px 0 18px;
}

.sec-lead {
  max-width: 640px;
  color: var(--sumi-soft);
  font-weight: 400;
  line-height: 2.2;
}

.center .sec-lead { margin-left: auto; margin-right: auto; }
.sec-head.center { text-align: center; }



/* ============ sections ============ */
.sec { position: relative; padding: clamp(90px, 13vw, 170px) 0; }
.sec--paper { background: var(--paper); color: var(--sumi); }
.sec--shade { background: var(--paper-2); color: var(--sumi); }
.sec--dark { background: var(--ink); color: var(--paper); }
.sec--dark .sec-title { color: var(--paper); }
.sec--dark .sec-lead { color: var(--fog); }

/* 巨大ゴースト漢字(セクション背景の透かし) */
.ghost-kanji {
  position: absolute;
  z-index: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(180px, 30vw, 420px);
  line-height: 1;
  color: var(--sumi);
  opacity: 0.045;
  pointer-events: none;
  user-select: none;
  right: calc(var(--pad) * -0.4);
  top: 40px;
}
.sec--dark .ghost-kanji { color: var(--paper); opacity: 0.05; }
.sec > .container { position: relative; z-index: 1; }


/* ============ header ============ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.5s var(--ease-soft), backdrop-filter 0.5s var(--ease-soft);
}
.site-header .container {
  max-width: none;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header.is-solid {
  background: rgba(6, 15, 10, 0.78);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-d);
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 34px; width: auto; }

/* ダーク面では白ロゴ、紙面ヘッダーでは緑ロゴを切替(2枚重ね) */
.brand .logo-light, .brand .logo-dark { transition: opacity 0.5s var(--ease-soft); }
.brand { position: relative; }
.brand .logo-dark { position: absolute; left: 0; top: 50%; transform: translateY(-50%); opacity: 0; }
body[data-header="light"] .site-header:not(.is-solid) .logo-light { opacity: 0; }
body[data-header="light"] .site-header:not(.is-solid) .logo-dark { opacity: 1; }

.gnav ul { display: flex; align-items: center; gap: clamp(10px, 2vw, 26px); }
.gnav a {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--paper);
  padding: 10px 2px;
  position: relative;
  transition: color 0.4s var(--ease-soft);
}
body[data-header="light"] .site-header:not(.is-solid) .gnav a { color: var(--sumi); }
.gnav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 4px;
  width: 100%; height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s var(--ease-out);
}
.gnav a:hover::after, .gnav a.is-current::after { transform: scaleX(1); transform-origin: left; }
.gnav a.is-current { color: var(--gold); }
body[data-header="light"] .site-header:not(.is-solid) .gnav a.is-current { color: var(--green-deep); }
body[data-header="light"] .site-header:not(.is-solid) .gnav a.is-current::after { background: var(--green-deep); }

.gnav .nav-cta {
  border: 1px solid rgba(200, 173, 107, 0.55);
  border-radius: var(--r-pill);
  padding: 9px 22px;
  color: var(--gold);
}
.gnav .nav-cta::after { display: none; }
.gnav .nav-cta:hover { background: rgba(200, 173, 107, 0.12); }
body[data-header="light"] .site-header:not(.is-solid) .gnav .nav-cta {
  color: var(--green-deep);
  border-color: rgba(14, 92, 63, 0.45);
}
body[data-header="light"] .site-header:not(.is-solid) .gnav .nav-cta:hover { background: rgba(14, 92, 63, 0.08); }

/* mobile nav */
.nav-toggle { display: none; width: 44px; height: 44px; position: relative; z-index: 130; }
.nav-toggle span {
  display: block; width: 22px; height: 1.5px; margin: 5px auto;
  background: var(--paper);
  transition: transform 0.45s var(--ease-out), opacity 0.3s, background 0.3s;
}
body[data-header="light"] .site-header:not(.is-solid) .nav-toggle span { background: var(--sumi); }
.nav-toggle[aria-expanded="true"] span { background: var(--paper); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ============ hero (top) ============ */
.hero {
  position: relative;
  min-height: 100svh;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero::before {
  /* 右上に苔色の淡い光 */
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(110% 75% at 82% -12%, rgba(24, 154, 98, 0.22), transparent 58%);
  pointer-events: none;
}
#hero-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  display: block;
}
.hero-vignette {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(120% 90% at 50% 50%, transparent 55%, rgba(4, 10, 7, 0.55) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: calc(var(--header-h) + 4svh) var(--pad) 0;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: clamp(20px, 3.5svh, 38px);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(42px, 8.2vw, 104px);
  line-height: 1.34;
  letter-spacing: 0.045em;
  color: var(--paper);
}
.hero-title .t-accent {
  font-size: 0.78em; /* 英文アクセントは一段小さく(1行に収める+階層) */
  letter-spacing: 0.02em;
  background: linear-gradient(100deg, var(--mint) 0%, var(--green) 60%, var(--gold) 130%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 28px rgba(134, 220, 174, 0.28));
}
/* 文字分割(.char)が入ると親の background-clip が効かないため、各文字にも同じグラデを張る */
.t-accent .char {
  background: linear-gradient(100deg, var(--mint) 0%, var(--green) 70%, var(--gold) 160%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  margin-top: clamp(22px, 4svh, 40px);
  max-width: 560px;
  color: var(--fog);
  font-weight: 400;
  font-size: 16px;
  line-height: 2.3;
  letter-spacing: 0.06em;
}

.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; margin-top: clamp(28px, 5svh, 52px); }


/* スクロールキュー */
.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 64px;
  z-index: 2;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.4em;
  color: var(--fog);
}
.scroll-cue i {
  width: 1px; height: 44px;
  background: var(--mint);
  animation: drip 1.9s var(--ease-soft) infinite;
}
@keyframes drip {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============ buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border-radius: var(--r-pill);
  padding: 15px 36px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out), background 0.4s var(--ease-soft), color 0.4s var(--ease-soft), border-color 0.4s var(--ease-soft);
}
.btn .arr { transition: transform 0.5s var(--ease-out); }
.btn:hover .arr { transform: translateX(5px); }

.btn--solid {
  background: linear-gradient(120deg, var(--green) 0%, var(--green-deep) 100%);
  color: #f4faf6;
  box-shadow: 0 10px 38px rgba(24, 154, 98, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.btn--solid:hover { transform: translateY(-3px); box-shadow: 0 16px 50px rgba(24, 154, 98, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.22); }

.btn--ghost { border: 1px solid var(--line-d); color: var(--paper); }
.btn--ghost:hover { border-color: rgba(134, 220, 174, 0.6); color: var(--mint); transform: translateY(-3px); }

.sec--paper .btn--ghost, .sec--shade .btn--ghost { border-color: rgba(21, 60, 40, 0.3); color: var(--sumi); }
.sec--paper .btn--ghost:hover, .sec--shade .btn--ghost:hover { border-color: var(--green-deep); color: var(--green-deep); }

/* ============ issues(課題・ダーク面の編集リスト) ============ */
.issue-list { border-top: 1px solid var(--line-d); margin-top: clamp(40px, 6vw, 70px); }
.issue-row {
  display: grid;
  grid-template-columns: 90px 1fr 1.1fr;
  gap: clamp(18px, 3vw, 44px);
  align-items: baseline;
  padding: clamp(26px, 3.6vw, 42px) 0;
  border-bottom: 1px solid var(--line-d);
  transition: background 0.5s var(--ease-soft);
}
.issue-row:hover { background: rgba(233, 242, 235, 0.025); }
.issue-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--green);
}
.issue-row h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 25px);
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--paper);
}
.issue-row .en {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--fog);
  text-transform: uppercase;
}
.issue-row p { color: var(--fog); font-weight: 400; font-size: 14.5px; line-height: 2.1; }

.issue-close {
  margin-top: clamp(36px, 5vw, 56px);
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 27px);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--mint);
  text-align: center;
}

/* ============ pillars(3本柱)============ */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-l);
  border: 1px solid var(--line-l);
  margin-top: clamp(46px, 6vw, 72px);
}
.sec--dark .pillars { background: var(--line-d); border-color: var(--line-d); }

.pillar {
  position: relative;
  background: var(--paper);
  padding: clamp(30px, 3.6vw, 52px) clamp(24px, 2.8vw, 40px);
  overflow: hidden;
  transition: background 0.6s var(--ease-soft);
}
.pillar:hover { background: #fbfdf9; }
.pillar::before {
  /* 上辺の緑線がホバーで走る */
  content: "";
  position: absolute; top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--green), var(--mint));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.7s var(--ease-out);
}
.pillar:hover::before { transform: scaleX(1); }

.pillar .p-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--sumi-soft);
}
.pillar .p-kanji {
  position: absolute;
  right: 6px; bottom: -18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 108px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(21, 60, 40, 0.18);
  transition: color 0.7s var(--ease-soft), transform 0.8s var(--ease-out);
  pointer-events: none;
}
.pillar:hover .p-kanji { color: rgba(14, 92, 63, 0.14); transform: translateY(-8px); }
.pillar h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.1vw, 25px);
  letter-spacing: 0.08em;
  margin: 18px 0 4px;
}
.pillar .p-en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--green);
  display: block;
  margin-bottom: 18px;
}
.pillar p { font-size: 14.5px; color: var(--sumi-soft); line-height: 2.15; }
.pillar .p-link {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--green-deep);
}
.pillar .p-link .arr { transition: transform 0.5s var(--ease-out); }
.pillar:hover .p-link .arr { transform: translateX(5px); }

/* ============ ticker(業務モジュールの帯)============ */
.ticker-band {
  border-top: 1px solid var(--line-l);
  border-bottom: 1px solid var(--line-l);
  padding: 20px 0;
  overflow: hidden;
  background: var(--paper-2);
}
.ticker { display: flex; width: max-content; animation: ticker-run 38s linear infinite; }
.ticker-band:hover .ticker { animation-play-state: paused; }
.ticker .t-item {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 0 34px;
  white-space: nowrap;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.14em;
  color: var(--sumi);
}
.ticker .t-item .m {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--green);
}
.ticker .t-item::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px rgba(24, 154, 98, 0.6);
}
@keyframes ticker-run { to { transform: translateX(-50%); } }

/* ============ why(選ばれる理由・1px罫線グリッド)============ */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-l);
  border: 1px solid var(--line-l);
  margin-top: clamp(46px, 6vw, 72px);
}
.why-cell {
  background: var(--paper);
  padding: clamp(30px, 4vw, 56px);
  position: relative;
  transition: background 0.6s var(--ease-soft);
}
.why-cell:hover { background: #fbfdf9; }
.why-cell .w-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 52px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.2px rgba(14, 92, 63, 0.4);
}
.why-cell h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2vw, 24px);
  letter-spacing: 0.08em;
  margin: 20px 0 4px;
}
.why-cell .w-en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--green);
  display: block;
  margin-bottom: 16px;
}
.why-cell p { font-size: 14.5px; color: var(--sumi-soft); line-height: 2.15; }

/* ============ numbers(ダーク統計)============ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-d);
  border: 1px solid var(--line-d);
  margin-top: clamp(46px, 6vw, 72px);
}
.stat-cell {
  background: var(--ink);
  padding: clamp(34px, 4vw, 56px) clamp(22px, 3vw, 44px);
  text-align: center;
}
.stat-cell .s-value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(56px, 7vw, 96px);
  line-height: 1.1;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 46px rgba(134, 220, 174, 0.35);
}
.stat-cell .s-value .unit {
  font-size: 0.32em;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--mint);
  margin-left: 6px;
}
.stat-cell .s-label {
  margin-top: 16px;
  font-size: 13.5px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--fog);
  line-height: 2;
}
.stat-cell .s-en {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(134, 220, 174, 0.55);
}
.stats-note {
  margin-top: 18px;
  font-size: 11.5px;
  color: var(--fog);
  text-align: right;
  font-weight: 400;
  letter-spacing: 0.06em;
}

/* ダーク面背景の巨大デプス文字 */
.depth-words {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.depth-words span {
  position: absolute;
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.18em;
  font-size: clamp(52px, 9vw, 120px);
  color: rgba(134, 220, 174, 0.045);
  white-space: nowrap;
}

/* ============ CTA band ============ */
.cta-band {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  text-align: center;
  padding: clamp(90px, 13vw, 100px) var(--pad);
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(70% 90% at 50% 115%, rgba(24, 154, 98, 0.3), transparent 65%);
  pointer-events: none;
}
.cta-band .kicker { justify-content: center; color: var(--mint); }
.cta-band .kicker::after { content: ""; width: 34px; height: 1px; background: currentColor; opacity: 0.6; }
.cta-band h2 {
  position: relative;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 42px);
  letter-spacing: 0.1em;
  line-height: 1.8;
  margin: 26px 0 18px;
  color: var(--paper);
}
.cta-band p { position: relative; color: var(--fog); font-weight: 400; max-width: 560px; margin: 0 auto 40px; }

/* ============ page hero(下層)============ */
.page-hero {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding: calc(var(--header-h) + clamp(64px, 10vw, 120px)) 0 clamp(56px, 8vw, 96px);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(90% 80% at 85% -20%, rgba(24, 154, 98, 0.25), transparent 60%);
  pointer-events: none;
}
.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 5.6vw, 68px);
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: var(--paper);
  margin-top: 22px;
}
.page-hero .page-lead {
  margin-top: 20px;
  max-width: 620px;
  color: var(--fog);
  font-weight: 400;
  line-height: 2.3;
}
.page-hero .ghost-kanji { top: auto; bottom: -60px; opacity: 0.06; color: var(--paper); }

/* breadcrumb */
.breadcrumb {
  background: var(--paper);
  border-bottom: 1px solid var(--line-l);
  padding: 14px 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sumi-soft);
}
.breadcrumb ol { display: flex; gap: 10px; flex-wrap: wrap; }
.breadcrumb li + li::before { content: "/"; margin-right: 10px; opacity: 0.4; }
.breadcrumb a:hover { color: var(--green-deep); }

/* ============ cards(汎用・下層)============ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-l);
  border: 1px solid var(--line-l);
  margin-top: clamp(40px, 5vw, 64px);
}
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.tcard {
  background: var(--paper);
  padding: clamp(28px, 3.2vw, 44px);
  position: relative;
  transition: background 0.6s var(--ease-soft);
}
.tcard:hover { background: #fbfdf9; }
.tcard .c-num { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.24em; color: var(--sumi-soft); }
.tcard h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 1.9vw, 22px);
  letter-spacing: 0.07em;
  margin: 14px 0 4px;
}
.tcard .c-en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--green);
  display: block;
  margin-bottom: 14px;
}
.tcard p { font-size: 14px; color: var(--sumi-soft); line-height: 2.1; }
.tcard .c-meta {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--green-deep);
}

/* ============ steps ============ */
.steps { margin-top: clamp(40px, 5vw, 64px); border-top: 1px solid var(--line-l); }
.step {
  display: grid;
  grid-template-columns: 110px 240px 1fr;
  gap: clamp(16px, 3vw, 40px);
  padding: clamp(24px, 3vw, 38px) 0;
  border-bottom: 1px solid var(--line-l);
  align-items: baseline;
}
.step .st-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 34px;
  color: transparent;
  -webkit-text-stroke: 1px rgba(14, 92, 63, 0.45);
  line-height: 1;
}
.step h3 { font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: 0.08em; }
.step .st-span {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  color: var(--green);
  text-transform: uppercase;
}
.step p { font-size: 14.5px; color: var(--sumi-soft); line-height: 2.1; }

/* ============ tables ============ */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-top: clamp(40px, 5vw, 64px); }

.compare-table { width: 100%; border-collapse: collapse; font-size: 14.5px; border: 1px solid var(--line-l); }
.compare-table th, .compare-table td {
  padding: 20px 22px;
  border: 1px solid var(--line-l);
  text-align: left;
  vertical-align: top;
  line-height: 2;
}
.compare-table thead th {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.1em;
  font-size: 15px;
}
.compare-table thead th:last-child { color: var(--mint); }
.compare-table tbody th {
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--sumi);
  white-space: nowrap;
  width: 18%;
}
.compare-table td { color: var(--sumi-soft); }
.compare-table td.highlight { background: rgba(24, 154, 98, 0.06); color: var(--sumi); }

.info-table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin-top: clamp(40px, 5vw, 64px); }
.info-table th, .info-table td {
  padding: 24px 18px;
  border-bottom: 1px solid var(--line-l);
  text-align: left;
  vertical-align: top;
  line-height: 2.1;
}
.info-table th {
  width: 220px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--green-deep);
  text-transform: uppercase;
  white-space: nowrap;
}
.info-table ul li { padding-left: 1.3em; position: relative; }
.info-table ul li::before {
  content: "";
  position: absolute; left: 0; top: 0.95em;
  width: 5px; height: 5px;
  background: var(--green);
  border-radius: 50%;
}

/* ============ philosophy / prose ============ */
.philosophy-quote {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 44px);
  letter-spacing: 0.1em;
  line-height: 2;
  text-align: center;
  margin: 0 auto;
  max-width: 900px;
}
.philosophy-quote .t-accent { color: var(--green-deep); }
.sec--dark .philosophy-quote { color: var(--paper); }
.sec--dark .philosophy-quote .t-accent { color: var(--mint); }

.prose { max-width: 720px; margin: clamp(40px, 5vw, 60px) auto 0; }
.prose p { font-size: 15.5px; line-height: 2.5; color: var(--sumi-soft); }
.prose p + p { margin-top: 2em; }
.prose p strong { color: var(--sumi); font-weight: 700; }

/* ============ contact ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
  margin-top: clamp(40px, 5vw, 64px);
}
.contact-info h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.2vw, 26px);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.contact-info p { font-size: 14.5px; color: var(--sumi-soft); line-height: 2.2; }
.contact-mail {
  display: inline-block;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--green-deep);
  border-bottom: 1px solid rgba(14, 92, 63, 0.4);
  padding-bottom: 3px;
  transition: color 0.4s var(--ease-soft), border-color 0.4s var(--ease-soft);
}
.contact-mail:hover { color: var(--green); border-color: var(--green); }

.form-field { margin-bottom: 26px; }
.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--sumi);
  margin-bottom: 10px;
}
.form-field .req { color: #b0492f; margin-left: 8px; font-size: 9.5px; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line-l);
  border-radius: 6px;
  background: #fbfdf9;
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--sumi);
  letter-spacing: 0.04em;
  transition: border-color 0.4s var(--ease-soft), box-shadow 0.4s var(--ease-soft);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(24, 154, 98, 0.12);
}
.form-field textarea { min-height: 170px; resize: vertical; }
.form-note { font-size: 12.5px; color: var(--sumi-soft); margin-bottom: 26px; line-height: 2; }

/* ============ footer ============ */
.site-footer {
  background: var(--ink);
  color: var(--fog);
  padding: clamp(60px, 8vw, 96px) 0 0;
  position: relative;
  overflow: hidden;
}
.site-footer .ghost-kanji { color: var(--paper); opacity: 0.035; top: auto; bottom: -80px; right: -20px; }
.footer-grid {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: clamp(30px, 5vw, 64px);
  padding-bottom: clamp(40px, 6vw, 64px);
}
.footer-brand img { height: 34px; width: auto; margin-bottom: 24px; }
.footer-brand p { font-size: 13.5px; font-weight: 400; line-height: 2.3; letter-spacing: 0.06em; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--paper);
  margin-bottom: 22px;
}
.footer-col li { margin-bottom: 12px; }
.footer-col a {
  font-size: 13.5px;
  font-weight: 400;
  letter-spacing: 0.08em;
  transition: color 0.4s var(--ease-soft);
}
.footer-col a:hover { color: var(--mint); }

.footer-status {
  position: relative; z-index: 1;
  border-top: 1px solid var(--line-d);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px var(--pad);
  margin: 0 calc(var(--pad) * -1);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
}
.footer-status .val { color: var(--mint); }

/* ============ reveal(スクロール登場)============ */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
  transition-delay: var(--d, 0s);
}
.reveal.is-in { opacity: 1; transform: none; }


/* 文字分割(1文字ずつ) */
.char { display: inline-block; opacity: 0; transform: translateY(0.5em); filter: blur(6px); }
body.is-loaded .char {
  animation: char-up 1.05s var(--ease-out) forwards;
  animation-delay: calc(0.35s + var(--i) * 0.045s);
}
@keyframes char-up { to { opacity: 1; transform: none; filter: blur(0); } }

.fade-late { opacity: 0; transition: opacity 1.2s var(--ease-soft); }
body.is-loaded .fade-late { opacity: 1; transition-delay: var(--d, 1.2s); }

/* ============ loader ============ */
#loader {
  position: fixed; inset: 0; z-index: 1000;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 26px;
  transition: opacity 0.8s var(--ease-soft) 0.15s, visibility 0.8s 0.15s;
}
#loader .ld-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 7vw, 72px);
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  color: var(--paper);
}
#loader .ld-mark .k { color: var(--mint); }
#loader .ld-bar {
  width: min(220px, 50vw);
  height: 1px;
  background: var(--line-d);
  position: relative;
  overflow: hidden;
}
#loader .ld-bar i {
  position: absolute; inset: 0;
  background: var(--mint);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-soft);
}
#loader .ld-pct {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.5em;
  color: var(--fog);
}
body.is-loaded #loader { opacity: 0; visibility: hidden; pointer-events: none; }

/* ライトローダー(白から始まるトップ用) */
#loader.loader--light { background: var(--paper); }
#loader.loader--light .ld-mark { color: var(--sumi); }
#loader.loader--light .ld-mark .k { color: var(--green-deep); }
#loader.loader--light .ld-bar { background: var(--line-l); }
#loader.loader--light .ld-bar i { background: var(--green-deep); }
#loader.loader--light .ld-pct { color: var(--sumi-soft); }

/* ============ responsive ============ */
@media (max-width: 1024px) {
  .pillars { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
  .step { grid-template-columns: 70px 1fr; }
  .step p { grid-column: 2; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  :root { --header-h: 64px; }
  body { font-size: 14px; }

  .nav-toggle { display: block; }
  .gnav {
    position: fixed; inset: 0;
    background: rgba(6, 15, 10, 0.96);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s var(--ease-soft), visibility 0.5s;
    z-index: 120;
  }
  .gnav.is-open { opacity: 1; visibility: visible; }
  .gnav ul { flex-direction: column; gap: 30px; text-align: center; }
  .gnav a { font-size: 14px; color: var(--paper) !important; }
  .gnav .nav-cta { color: var(--gold) !important; }

  .issue-row { grid-template-columns: 1fr; gap: 10px; }
  .issue-num { order: -1; }
  .card-grid, .card-grid.cols-2 { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .scroll-cue { display: none; }
  .info-table th { width: auto; display: block; border-bottom: none; padding-bottom: 0; }
  .info-table td { display: block; padding-top: 8px; }
  .compare-table { font-size: 13px; }
  .ghost-kanji { font-size: clamp(140px, 40vw, 220px); }
}

/* ============================================================
   v2.1 — ライトヒーロー / セクション反転 / モーション強化
   ============================================================ */

/* ---------- ライトヒーロー(白から始まる) ---------- */
.hero--light {
  background: var(--paper);
  color: var(--sumi);
}
.hero--light::before {
  background:
    radial-gradient(110% 75% at 82% -12%, rgba(24, 154, 98, 0.14), transparent 58%),
    radial-gradient(70% 50% at 10% 110%, rgba(200, 173, 107, 0.08), transparent 60%);
}
.hero--light .hero-vignette {
  background: radial-gradient(120% 90% at 50% 50%, transparent 60%, rgba(232, 239, 228, 0.7) 100%);
}
.hero--light .hero-kicker { color: var(--green-deep); font-weight: 500; }
.hero--light .hero-title { color: #0a120d; }
.hero--light .t-accent { filter: drop-shadow(0 0 20px rgba(14, 92, 63, 0.25)); }
.hero--light .t-accent .char {
  background: linear-gradient(100deg, #0f8a56 0%, #0b4a33 60%, #a8874a 145%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero--light .hero-lead { color: var(--sumi); font-weight: 400; }
.hero--light .btn--ghost {
  border-color: rgba(21, 60, 40, 0.35);
  color: var(--sumi);
  background: rgba(241, 245, 238, 0.75);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}
.hero--light .btn--ghost:hover { border-color: var(--green-deep); color: var(--green-deep); }
.hero--light .scroll-cue { color: var(--sumi); }
.hero--light .scroll-cue i { background: var(--green-deep); }

/* ---------- ヒーローHUD(業務OS稼働シミュレーション) ---------- */
.hero-hud {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  border-top: 1px solid var(--line-l);
  background: linear-gradient(0deg, rgba(241, 245, 238, 0.97), rgba(241, 245, 238, 0.82));
  font-family: var(--font-mono);
}
.hud-log {
  flex: 1 1 auto;
  min-width: 0;
  padding: 13px var(--pad);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}
.hud-tag {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--green-deep);
  display: flex;
  align-items: center;
  gap: 10px;
}
.hud-tag::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 9px rgba(24, 154, 98, 0.85);
  animation: hud-blink 1.6s var(--ease-soft) infinite;
}
@keyframes hud-blink { 50% { opacity: 0.3; } }
#hud-log-list { display: flex; flex-direction: column; gap: 3px; }
#hud-log-list li {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--sumi);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  animation: hud-in 0.45s var(--ease-out);
}
#hud-log-list li .t { color: var(--sumi-soft); margin-right: 12px; }
#hud-log-list li:first-child:not(:only-child) { opacity: 0.4; }
@keyframes hud-in { from { opacity: 0; transform: translateY(7px); } }

.hud-stats { display: flex; flex: 0 0 auto; }
.hud-stat {
  padding: 12px clamp(14px, 2.2vw, 32px);
  border-left: 1px solid var(--line-l);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
}
.hud-stat .hs-label {
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sumi-soft);
}
.hud-stat .hs-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.2;
  color: var(--green-deep);
  font-variant-numeric: tabular-nums;
}
@media (max-width: 900px) {
  .hud-stat:nth-child(3) { display: none; }
}
@media (max-width: 760px) {
  .hud-stat:nth-child(2) { display: none; }
  #hud-log-list li { font-size: 9.5px; }
  .hud-stat { padding: 10px 14px; }
  .hud-stat .hs-value { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .hud-tag::before, #hud-log-list li { animation: none; }
}

/* ---------- ダーク面での罫線カード(反転用) ---------- */
.sec--dark .pillars { background: var(--line-d); border-color: var(--line-d); }
.sec--dark .pillar { background: var(--ink-2); }
.sec--dark .pillar:hover { background: #0e2015; }
.sec--dark .pillar h3 { color: var(--paper); }
.sec--dark .pillar p { color: var(--fog); }
.sec--dark .pillar .p-num { color: var(--fog); }
.sec--dark .pillar .p-en { color: var(--mint); }
.sec--dark .pillar .p-link { color: var(--mint); }
.sec--dark .pillar .p-kanji { -webkit-text-stroke: 1px rgba(233, 242, 235, 0.14); }
.sec--dark .pillar:hover .p-kanji { color: rgba(134, 220, 174, 0.1); }

.sec--dark .why-grid { background: var(--line-d); border-color: var(--line-d); }
.sec--dark .why-cell { background: var(--ink-2); }
.sec--dark .why-cell:hover { background: #0e2015; }
.sec--dark .why-cell h3 { color: var(--paper); }
.sec--dark .why-cell p { color: var(--fog); }
.sec--dark .why-cell .w-num { -webkit-text-stroke: 1.2px rgba(134, 220, 174, 0.45); }
.sec--dark .why-cell .w-en { color: var(--mint); }

/* ---------- 紙面での課題リスト(反転用) ---------- */
.sec--paper .issue-list, .sec--shade .issue-list { border-top-color: var(--line-l); }
.sec--paper .issue-row, .sec--shade .issue-row { border-bottom-color: var(--line-l); }
.sec--paper .issue-row:hover, .sec--shade .issue-row:hover { background: rgba(21, 60, 40, 0.03); }
.sec--paper .issue-row h3, .sec--shade .issue-row h3 { color: var(--sumi); }
.sec--paper .issue-row .en, .sec--shade .issue-row .en { color: var(--sumi-soft); }
.sec--paper .issue-row p, .sec--shade .issue-row p { color: var(--sumi-soft); }
.sec--paper .issue-num, .sec--shade .issue-num { color: var(--green-deep); }
.sec--paper .issue-close, .sec--shade .issue-close { color: var(--green-deep); }

/* ---------- 紙面での統計(反転用) ---------- */
.sec--paper .stats-row, .sec--shade .stats-row { background: var(--line-l); border-color: var(--line-l); }
.sec--paper .stat-cell, .sec--shade .stat-cell { background: var(--paper); }
.sec--paper .stat-cell .s-value, .sec--shade .stat-cell .s-value {
  color: var(--green-deep);
  text-shadow: 0 0 34px rgba(24, 154, 98, 0.28);
}
.sec--paper .stat-cell .s-value .unit { color: var(--green); }
.sec--paper .stat-cell .s-label, .sec--shade .stat-cell .s-label { color: var(--sumi-soft); }
.sec--paper .stat-cell .s-en, .sec--shade .stat-cell .s-en { color: rgba(20, 122, 79, 0.6); }
.sec--paper .stats-note, .sec--shade .stats-note { color: var(--sumi-soft); }
.sec--paper .depth-words span, .sec--shade .depth-words span { color: rgba(14, 92, 63, 0.05); }
.sec--paper .kicker, .sec--shade .kicker { color: var(--green-deep); }

/* ---------- ダークティッカー(反転用) ---------- */
.ticker-band--dark { background: var(--ink-2); border-color: var(--line-d); }
.ticker-band--dark .t-item { color: var(--paper); }
.ticker-band--dark .t-item .m { color: var(--mint); }
.ticker-band--dark .t-item::before { box-shadow: 0 0 12px rgba(134, 220, 174, 0.8); background: var(--mint); }

/* ---------- スクロール進捗バー ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 2px;
  z-index: 200;
  background: linear-gradient(90deg, var(--green), var(--mint));
  transform: scaleX(0);
  transform-origin: left;
  pointer-events: none;
}

/* ---------- カスタムカーソル ---------- */
body.has-cursor, body.has-cursor a, body.has-cursor button { cursor: none; }
.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  z-index: 999;
  pointer-events: none;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.cursor-dot {
  width: 7px; height: 7px;
  background: var(--green);
  box-shadow: 0 0 12px rgba(24, 154, 98, 0.7);
}
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid rgba(24, 154, 98, 0.55);
  transition: width 0.35s var(--ease-out), height 0.35s var(--ease-out), border-color 0.35s;
}
.cursor-ring.is-hover {
  width: 58px; height: 58px;
  border-color: rgba(200, 173, 107, 0.8);
}
@media (hover: none), (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ---------- 巨大アウトライン文字マーキー ---------- */
.mega-marquee {
  background: var(--ink);
  border-top: 1px solid var(--line-d);
  overflow: hidden;
  padding: clamp(30px, 4vw, 56px) 0;
  position: relative;
}
.mega-marquee .mm-track {
  display: flex;
  width: max-content;
  animation: ticker-run 30s linear infinite;
}
.mega-marquee .mm-item {
  white-space: nowrap;
  padding-right: 80px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(56px, 9vw, 130px);
  line-height: 1.15;
  letter-spacing: 0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(134, 220, 174, 0.3);
}
.mega-marquee .mm-item .solid { color: rgba(134, 220, 174, 0.16); -webkit-text-stroke: 0; }

/* ---------- 3Dチルト(JSと連動) ---------- */
.tilt {
  transform-style: preserve-3d;
  will-change: transform;
  position: relative;
}
.tilt::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(320px circle at var(--gx, 50%) var(--gy, 50%), rgba(134, 220, 174, 0.1), transparent 65%);
  transition: opacity 0.5s var(--ease-soft);
}
.tilt:hover::after { opacity: 1; }
.sec--paper .tilt::after, .sec--shade .tilt::after {
  background: radial-gradient(320px circle at var(--gx, 50%) var(--gy, 50%), rgba(14, 92, 63, 0.07), transparent 65%);
}

/* ---------- デモ額装(ウィンドウ風フレーム) ---------- */
.demo-frame {
  margin-top: clamp(40px, 5vw, 64px);
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line-d);
  background: #0c1a11;
  box-shadow: 0 30px 90px rgba(3, 10, 6, 0.55), 0 0 120px rgba(24, 154, 98, 0.12);
}
.demo-frame .df-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line-d);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fog);
}
.demo-frame .df-bar i { width: 10px; height: 10px; border-radius: 50%; flex: 0 0 auto; }
.demo-frame .df-bar i:nth-child(1) { background: #ff5f57; }
.demo-frame .df-bar i:nth-child(2) { background: #febc2e; }
.demo-frame .df-bar i:nth-child(3) { background: #28c840; }
.demo-frame .df-bar .df-title { margin-left: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.demo-body {
  position: relative;
  height: clamp(380px, 56vw, 660px);
  background: #0c1a11;
}
.demo-body .demo-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
  transition: opacity 0.6s var(--ease-soft);
}
.demo-body iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: #dfe5e0;
  opacity: 0;
  transition: opacity 0.6s var(--ease-soft);
}
.demo-body.is-live iframe { opacity: 1; }
.demo-body.is-live .demo-poster { opacity: 0; pointer-events: none; }
.demo-launch {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border: 1px solid rgba(134, 220, 174, 0.55);
  border-radius: var(--r-pill);
  background: rgba(6, 15, 10, 0.78);
  color: var(--mint);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  cursor: pointer;
  transition: background 0.4s var(--ease-soft), transform 0.5s var(--ease-out);
}
.demo-launch:hover { background: rgba(10, 30, 18, 0.92); transform: translate(-50%, -50%) scale(1.04); }
.demo-body.is-live .demo-launch, .demo-body.is-loading .demo-launch { display: none; }
.sec--paper .demo-frame, .sec--shade .demo-frame {
  border-color: var(--line-l);
  box-shadow: 0 24px 70px rgba(21, 60, 40, 0.2);
}
.demo-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 28px;
}
.demo-note {
  margin-top: 14px;
  text-align: center;
  font-size: 12px;
  color: var(--fog);
  letter-spacing: 0.06em;
}
.sec--paper .demo-note, .sec--shade .demo-note { color: var(--sumi-soft); }
@media (max-width: 760px) {
  .demo-body { height: 340px; }
}

/* ============ reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .char, .fade-late { opacity: 1 !important; transform: none !important; filter: none !important; transition: none !important; animation: none !important; }
  .ticker, .mega-marquee .mm-track { animation: none; flex-wrap: wrap; width: auto; }
  .scroll-cue i { animation: none; }
  .cursor-dot, .cursor-ring, .scroll-progress { display: none; }
  .tilt { transform: none !important; }
}