/* ============================================================
   ARSS Corporate Site — Design System & Styles
   ------------------------------------------------------------
   コンセプト: ARS(技術・芸術) — 漆黒 × クリムゾン × 生成り
   依存: なし(フレームワーク不使用 / Vanilla CSS)

   目次
     1. Design Tokens(CSS変数)
     2. Reset / Base
     3. Typography & Utilities
     4. Background Ornaments(グリッド/ノイズ)
     5. Buttons / Chips / Links
     6. Header / Navigation
     7. Hero(トップ)
     8. Section 共通(見出し・余白)
     9. Marquee
    10. Services
    11. Strengths(терminal含む)
    12. Works
    13. News
    14. Philosophy(paperセクション)
    15. Process(タイムライン)
    16. Company(理念・概要)
    17. Contact(フォーム・FAQ・地図)
    18. CTA / Footer
    19. Privacy / 404
    20. Loader / Cursor / Progress / ToTop
    21. Reveal(スクロール出現)
    22. Responsive
    23. Reduced Motion / View Transitions
   ============================================================ */


/* ============ 1. Design Tokens ============ */
:root {
  /* color */
  --c-bg: #0a0a0e;
  --c-bg-2: #0e0e14;
  --c-surface: #14141c;
  --c-surface-2: #1a1a24;
  --c-line: rgba(233, 226, 208, 0.10);
  --c-line-strong: rgba(233, 226, 208, 0.24);
  --c-text: #f2efe6;
  --c-text-2: #c9c5ba;
  --c-muted: #928e84;
  --c-crimson: #d8453c;
  --c-crimson-bright: #ef5a50;
  --c-crimson-deep: #8e261f;
  --c-crimson-soft: rgba(216, 69, 60, 0.12);
  --c-cream: #e9e2d0;
  --c-paper: #ece6d6;
  --c-paper-2: #e2dbc8;
  --c-ink: #16140f;
  --c-ink-2: #4d473b;

  /* font */
  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
  --font-display: "Space Grotesk", "Noto Sans JP", system-ui, sans-serif;
  --font-serif: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* layout */
  --container: 1200px;
  --pad: clamp(20px, 4vw, 40px);
  --section-pad: clamp(88px, 11vw, 150px);
  --header-h: 72px;
  --radius: 16px;
  --radius-sm: 10px;

  /* motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --dur: 0.7s;
}

/* ============ 2. Reset / Base ============ */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  font-feature-settings: "palt";
  overflow-x: hidden;
}

img, svg, video, canvas { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
address { font-style: normal; }

::selection { background: var(--c-crimson); color: #fff; }

:focus-visible {
  outline: 2px solid var(--c-crimson);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--c-crimson);
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
  transition: top 0.2s;
}
.skip-link:focus { top: 12px; }

/* ============ 3. Typography & Utilities ============ */
.container {
  width: min(100% - var(--pad) * 2, var(--container));
  margin-inline: auto;
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.serif { font-family: var(--font-serif); }

/* 見出し共通 */
.heading-xl, .heading-lg, .heading-md {
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.03em;
  word-break: keep-all;
  overflow-wrap: anywhere;
  text-wrap: balance;
}
.heading-xl { font-size: clamp(2.4rem, 6.4vw, 4.6rem); line-height: 1.22; }
.heading-lg { font-size: clamp(1.7rem, 3.6vw, 2.7rem); }
.heading-md { font-size: clamp(1.2rem, 2.2vw, 1.5rem); font-weight: 700; }

.text-lead {
  color: var(--c-text-2);
  font-size: clamp(0.97rem, 1.4vw, 1.08rem);
}

.accent { color: var(--c-crimson); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ============ 4. Background Ornaments ============ */
/* 全ページ共通: ブループリント風の極薄グリッド + ノイズ */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(233, 226, 208, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(233, 226, 208, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 100%);
}

.bg-noise {
  position: fixed;
  inset: 0;
  z-index: 120;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

/* ============ 5. Buttons / Chips / Links ============ */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  transition: transform 0.35s var(--ease-out), background 0.3s, border-color 0.3s, color 0.3s, box-shadow 0.3s;
  will-change: transform;
}

.btn .btn-arrow {
  display: inline-block;
  transition: transform 0.35s var(--ease-out);
}
.btn:hover .btn-arrow { transform: translateX(5px); }

.btn-primary {
  background: linear-gradient(135deg, var(--c-crimson) 0%, var(--c-crimson-deep) 100%);
  color: #fff;
  box-shadow: 0 8px 28px rgba(216, 69, 60, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(216, 69, 60, 0.4);
}
/* シャインスイープ */
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s var(--ease-out);
}
.btn-primary:hover::after { left: 130%; }

.btn-ghost {
  border: 1px solid var(--c-line-strong);
  color: var(--c-cream);
  background: transparent;
}
.btn-ghost:hover {
  border-color: var(--c-crimson);
  background: var(--c-crimson-soft);
  transform: translateY(-2px);
}

.btn-lg { padding: 19px 42px; font-size: 1.02rem; }

/* テキストリンク(矢印付き) */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-cream);
  padding-bottom: 4px;
  background: linear-gradient(var(--c-crimson), var(--c-crimson)) left bottom / 0 1px no-repeat;
  transition: background-size 0.4s var(--ease-out), color 0.3s;
}
.link-arrow:hover { background-size: 100% 1px; color: #fff; }
.link-arrow .btn-arrow { transition: transform 0.35s var(--ease-out); }
.link-arrow:hover .btn-arrow { transform: translateX(5px); }

/* チップ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--c-text-2);
  background: rgba(20, 20, 28, 0.5);
}
.chip::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--c-crimson);
  flex: none;
}

/* ============ 6. Header / Navigation ============ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--header-h);
  transition: transform 0.45s var(--ease-out), background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(10, 10, 14, 0.72);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom-color: var(--c-line);
}
.site-header.is-hidden { transform: translateY(-100%); }

.header-inner {
  width: min(100% - var(--pad) * 2, 1320px);
  margin-inline: auto;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 28px;
}

/* ブランドロゴ(テキスト) */
.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.55rem;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  color: var(--c-text);
  margin-right: auto;
}
.brand-dot {
  width: 7px; height: 7px;
  background: var(--c-crimson);
  flex: none;
  transition: transform 0.4s var(--ease-out), border-radius 0.4s;
}
.brand:hover .brand-dot { transform: rotate(135deg) scale(1.15); border-radius: 50%; }

.site-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 36px);
}
.site-nav a {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  padding: 6px 2px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--c-text-2);
  transition: color 0.3s;
}
.site-nav a .nav-en {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.3em;
  color: var(--c-muted);
  transition: color 0.3s;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -3px;
  width: 0; height: 2px;
  background: var(--c-crimson);
  transform: translateX(-50%);
  transition: width 0.35s var(--ease-out);
  border-radius: 2px;
}
.site-nav a:hover { color: var(--c-text); }
.site-nav a:hover::after { width: 100%; }

/* アクティブページ表示: body[data-page] と data-nav の一致で制御 */
body[data-page="home"]     .site-nav a[data-nav="home"],
body[data-page="services"] .site-nav a[data-nav="services"],
body[data-page="company"]  .site-nav a[data-nav="company"],
body[data-page="contact"]  .site-nav a[data-nav="contact"] { color: var(--c-text); }
body[data-page="home"]     .site-nav a[data-nav="home"]::after,
body[data-page="services"] .site-nav a[data-nav="services"]::after,
body[data-page="company"]  .site-nav a[data-nav="company"]::after,
body[data-page="contact"]  .site-nav a[data-nav="contact"]::after { width: 100%; }

.header-cta { padding: 11px 24px; font-size: 0.88rem; }

/* ハンバーガー(モバイル) */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 220;
  width: 46px; height: 46px;
  border: 1px solid var(--c-line-strong);
  border-radius: 50%;
  flex: none;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 18px; height: 2px;
  background: var(--c-cream);
  border-radius: 2px;
  transition: transform 0.4s var(--ease-out), top 0.4s, opacity 0.3s;
}
.nav-toggle span { top: 50%; transform: translate(-50%, -50%); }
.nav-toggle span::before { top: -6px; transform: translateX(-50%); }
.nav-toggle span::after { top: 6px; transform: translateX(-50%); }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: translateX(-50%) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: translateX(-50%) rotate(-45deg); }

/* ============ 7. Hero(トップ) ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 48px) 0 96px;
  overflow: hidden;
}

/* クリムゾンの環境光 */
.hero::before {
  content: "";
  position: absolute;
  top: -20%; right: -10%;
  width: 70vw; height: 70vw;
  max-width: 900px; max-height: 900px;
  background: radial-gradient(circle, rgba(142, 38, 31, 0.28) 0%, transparent 62%);
  filter: blur(40px);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -30%; left: -15%;
  width: 55vw; height: 55vw;
  max-width: 700px; max-height: 700px;
  background: radial-gradient(circle, rgba(233, 226, 208, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Canvas非対応・reduced-motion時のフォールバック(アウトラインのARSS) */
.hero-art-fallback {
  position: absolute;
  right: 2vw;
  top: 50%;
  transform: translateY(-50%);
  z-index: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(7rem, 24vw, 21rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(233, 226, 208, 0.16);
  pointer-events: none;
  user-select: none;
}
.hero.canvas-on .hero-art-fallback { display: none; }

.hero-inner { position: relative; z-index: 1; }

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--c-crimson-bright);
  margin-bottom: 26px;
}
.hero-eyebrow::before {
  content: "";
  width: 42px; height: 1px;
  background: var(--c-crimson);
}

.hero-title {
  font-size: clamp(2.7rem, 7.2vw, 5.4rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: 0.02em;
  word-break: keep-all;
  overflow-wrap: anywhere;
  margin-bottom: 30px;
}

/* 文字分割アニメーション用 */
.hero-title .line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.08em;
  margin-bottom: -0.08em;
}
.hero-title .char {
  display: inline-block;
  transform: translateY(115%);
  will-change: transform;
}
.is-loaded .hero-title .char {
  animation: char-up 0.9s var(--ease-out) forwards;
  animation-delay: calc(0.25s + var(--ci, 0) * 0.035s);
}
@keyframes char-up { to { transform: translateY(0); } }
/* JS無効時は即表示 */
.no-js .hero-title .char { transform: none; }

.hero-lead {
  max-width: 36em;
  color: var(--c-text-2);
  font-size: clamp(0.95rem, 1.5vw, 1.07rem);
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ロード後のふわっと出現(下層要素) */
.hero-eyebrow, .hero-lead, .hero-actions, .hero-chips, .hero-meta {
  opacity: 0;
  transform: translateY(18px);
}
.is-loaded .hero-eyebrow { transition: opacity 0.8s, transform 0.8s var(--ease-out); transition-delay: 0.15s; opacity: 1; transform: none; }
.is-loaded .hero-lead    { transition: opacity 0.8s, transform 0.8s var(--ease-out); transition-delay: 0.65s; opacity: 1; transform: none; }
.is-loaded .hero-actions { transition: opacity 0.8s, transform 0.8s var(--ease-out); transition-delay: 0.8s;  opacity: 1; transform: none; }
.is-loaded .hero-chips   { transition: opacity 0.8s, transform 0.8s var(--ease-out); transition-delay: 0.95s; opacity: 1; transform: none; }
.is-loaded .hero-meta    { transition: opacity 1s; transition-delay: 1.3s; opacity: 1; transform: none; }
.no-js .hero-eyebrow, .no-js .hero-lead, .no-js .hero-actions, .no-js .hero-chips, .no-js .hero-meta {
  opacity: 1; transform: none;
}

/* 画面端のメタ情報(縦書き・座標) */
.hero-meta {
  position: absolute;
  z-index: 1;
  right: max(calc((100vw - var(--container)) / 2 - 56px), 18px);
  bottom: 110px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  color: var(--c-muted);
  writing-mode: vertical-rl;
}
.hero-meta::after {
  content: "";
  width: 1px; height: 64px;
  background: linear-gradient(var(--c-crimson), transparent);
}

/* スクロールインジケーター */
.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.35em;
  color: var(--c-muted);
}
.scroll-cue .cue-line {
  width: 1px; height: 44px;
  background: var(--c-line-strong);
  position: relative;
  overflow: hidden;
}
.scroll-cue .cue-line::after {
  content: "";
  position: absolute;
  top: -100%; left: 0;
  width: 100%; height: 100%;
  background: var(--c-crimson);
  animation: cue-drop 2.2s var(--ease-soft) infinite;
}
@keyframes cue-drop {
  0% { top: -100%; }
  55%, 100% { top: 100%; }
}

/* ============ 8. Section 共通 ============ */
.section { position: relative; padding: var(--section-pad) 0; }
.section-alt { background: var(--c-bg-2); }

.section-head { margin-bottom: clamp(44px, 6vw, 72px); position: relative; }
.section-head.center { text-align: center; }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--c-crimson-bright);
  margin-bottom: 16px;
}
.section-eyebrow .idx { color: var(--c-muted); }
.section-eyebrow::before {
  content: "";
  width: 30px; height: 1px;
  background: var(--c-crimson);
}
.section-head.center .section-eyebrow::after {
  content: "";
  width: 30px; height: 1px;
  background: var(--c-crimson);
}

.section-desc {
  margin-top: 18px;
  color: var(--c-text-2);
  max-width: 44em;
}
.section-head.center .section-desc { margin-inline: auto; }

/* 背景のゴースト番号 */
.ghost-index {
  position: absolute;
  top: -0.35em;
  right: -0.05em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(6rem, 16vw, 13rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(233, 226, 208, 0.07);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

/* ============ 9. Marquee ============ */
.marquee {
  position: relative;
  padding: 22px 0;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  overflow: hidden;
  background: var(--c-bg-2);
  /* 端をフェード */
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex;
  width: max-content;
  gap: 48px;
  animation: marquee-scroll 36s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee ul {
  display: flex;
  align-items: center;
  gap: 48px;
  flex: none;
}
.marquee li {
  display: flex;
  align-items: center;
  gap: 48px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--c-muted);
  white-space: nowrap;
}
.marquee li::after {
  content: "";
  width: 6px; height: 6px;
  background: var(--c-crimson);
  transform: rotate(45deg);
  opacity: 0.7;
}
@keyframes marquee-scroll {
  to { transform: translateX(calc(-50% - 24px)); }
}

/* ============ 10. Services ============ */
.service-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--c-line);
}

.service-row {
  position: relative;
  display: grid;
  grid-template-columns: 90px 1fr 1.1fr 56px;
  gap: clamp(18px, 3vw, 44px);
  align-items: center;
  padding: clamp(30px, 4.5vw, 52px) clamp(4px, 1vw, 16px);
  border-bottom: 1px solid var(--c-line);
  transition: background 0.4s, padding-left 0.4s var(--ease-out);
  overflow: hidden;
}
/* ホバー時の差し色レイヤー */
.service-row::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--c-crimson-soft), transparent 65%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.service-row:hover::before { opacity: 1; }
.service-row:hover { padding-left: clamp(12px, 2vw, 28px); }

.service-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--c-muted);
}
.service-num::before { content: "/ "; color: var(--c-crimson); }

.service-row h3 {
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.service-row h3 .en {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-crimson-bright);
  margin-top: 8px;
}

.service-body p { color: var(--c-text-2); font-size: 0.95rem; margin-bottom: 14px; }

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.service-tags span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  border: 1px solid var(--c-line);
  border-radius: 6px;
  padding: 4px 10px;
  transition: color 0.3s, border-color 0.3s;
}
.service-row:hover .service-tags span { color: var(--c-cream); border-color: var(--c-line-strong); }

.service-go {
  width: 52px; height: 52px;
  border: 1px solid var(--c-line-strong);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  color: var(--c-cream);
  transition: background 0.35s, transform 0.35s var(--ease-out), border-color 0.35s, color 0.35s;
}
.service-row:hover .service-go {
  background: var(--c-crimson);
  border-color: var(--c-crimson);
  color: #fff;
  transform: rotate(-45deg);
}

.section-foot { margin-top: clamp(36px, 5vw, 56px); text-align: center; }

/* --- サービス詳細ページ --- */
.service-detail { scroll-margin-top: calc(var(--header-h) + 24px); }

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

.detail-sticky { position: sticky; top: calc(var(--header-h) + 32px); }

.detail-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3.4rem, 7vw, 5.5rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(216, 69, 60, 0.55);
  margin-bottom: 18px;
}

.offer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.offer-card {
  position: relative;
  padding: 26px 24px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
.offer-card:hover {
  transform: translateY(-4px);
  border-color: rgba(216, 69, 60, 0.45);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
}
.offer-card .offer-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--c-crimson-soft);
  color: var(--c-crimson-bright);
  margin-bottom: 16px;
}
.offer-card .offer-icon svg { width: 22px; height: 22px; }
.offer-card h4 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 8px;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.offer-card p { font-size: 0.85rem; color: var(--c-muted); line-height: 1.8; }

/* ============ 11. Strengths ============ */
.strengths-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.strength-card {
  position: relative;
  padding: clamp(26px, 3.4vw, 40px);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
/* ポインター追従グロー(JSで --mx/--my を更新) */
.strength-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(216, 69, 60, 0.12), transparent 45%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.strength-card:hover::before { opacity: 1; }
.strength-card:hover {
  transform: translateY(-5px);
  border-color: rgba(216, 69, 60, 0.4);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.5);
}

.strength-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--c-crimson-bright);
  display: block;
  margin-bottom: 18px;
}
.strength-card h3 {
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  font-weight: 900;
  margin-bottom: 14px;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.strength-card p { font-size: 0.9rem; color: var(--c-text-2); }

/* 擬似ターミナル */
.terminal {
  margin-top: 18px;
  background: #0c0c11;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.55);
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--c-line);
  background: rgba(255, 255, 255, 0.02);
}
.terminal-bar i {
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--c-line-strong);
}
.terminal-bar i:nth-child(1) { background: #e5564d; }
.terminal-bar i:nth-child(2) { background: #e0b34c; }
.terminal-bar i:nth-child(3) { background: #58b368; }
.terminal-bar .terminal-title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--c-muted);
}
.terminal-body {
  padding: 22px 22px 26px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 2.1;
  min-height: 13em;
  color: var(--c-text-2);
}
.terminal-body .t-line { display: block; white-space: pre-wrap; word-break: break-all; }
.terminal-body .t-prompt { color: var(--c-crimson-bright); }
.terminal-body .t-ok { color: #79c98a; }
.terminal-body .t-dim { color: var(--c-muted); }
.terminal-caret {
  display: inline-block;
  width: 8px; height: 1.05em;
  background: var(--c-cream);
  vertical-align: -0.18em;
  margin-left: 2px;
  animation: caret-blink 1s steps(1) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }

/* ============ 12. Works ============ */
.works-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.work-card {
  position: relative;
  display: grid;
  grid-template-columns: 108px 1fr;
  gap: 24px;
  align-items: center;
  padding: clamp(24px, 3vw, 34px);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
.work-card::after {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--c-crimson), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-out);
}
.work-card:hover::after { transform: scaleX(1); }
.work-card:hover {
  transform: translateY(-5px);
  border-color: var(--c-line-strong);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.5);
}

.work-logo {
  width: 108px; height: 108px;
  border-radius: 14px;
  background: #fff;
  display: grid;
  place-items: center;
  overflow: hidden;
  flex: none;
}
/* 中央寄せ(place-items)とサイズ縮小(86%)を同じ箱=picture に揃える。
   img を 86% にすると picture が全幅のまま img だけ左詰めになり中心がズレるため。 */
.work-logo picture {
  display: block;
  width: 86%; height: 86%;
}
.work-logo img {
  width: 100%; height: 100%;
  object-fit: contain;
  transition: transform 0.5s var(--ease-out);
}
.work-card:hover .work-logo img { transform: scale(1.07); }

/* OPAQUE は全面ダーク背景の画像。白パディングを消し全面表示にして白枠を解消 */
.work-logo--bleed picture { width: 100%; height: 100%; }

.work-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  color: var(--c-crimson-bright);
  border: 1px solid rgba(216, 69, 60, 0.4);
  border-radius: 6px;
  padding: 3px 10px;
  margin-bottom: 12px;
}
.work-card h3 {
  font-size: 1.06rem;
  font-weight: 700;
  margin-bottom: 8px;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.work-card p { font-size: 0.85rem; color: var(--c-muted); line-height: 1.8; }

/* ============ 13. News ============ */
.news-list { border-top: 1px solid var(--c-line); }
.news-item {
  display: grid;
  grid-template-columns: 130px 130px 1fr;
  gap: clamp(16px, 3vw, 40px);
  align-items: center;
  padding: 26px clamp(4px, 1vw, 14px);
  border-bottom: 1px solid var(--c-line);
  transition: background 0.3s, padding-left 0.35s var(--ease-out);
}
.news-item:hover { background: rgba(233, 226, 208, 0.025); padding-left: 18px; }
.news-date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--c-muted);
}
.news-cat {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-align: center;
  color: var(--c-cream);
  border: 1px solid var(--c-line-strong);
  border-radius: 999px;
  padding: 4px 10px;
  white-space: nowrap;
}
.news-title { font-size: 0.95rem; color: var(--c-text-2); }

/* ============ 14. Philosophy(paperセクション) ============ */
.section-paper {
  background: var(--c-paper);
  color: var(--c-ink);
}
.section-paper::before {
  /* 紙の質感 */
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.06;
  pointer-events: none;
}
.section-paper .section-eyebrow { color: var(--c-crimson-deep); }
.section-paper .section-eyebrow .idx { color: var(--c-ink-2); }
.section-paper .section-desc { color: var(--c-ink-2); }

.philosophy-grid {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(40px, 7vw, 110px);
  align-items: center;
}

/* 縦書きの理念コピー */
.philosophy-vertical {
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(1.9rem, 4.2vw, 3.2rem);
  letter-spacing: 0.22em;
  line-height: 1.9;
  color: var(--c-ink);
  min-height: 9em;
}
.philosophy-vertical em {
  font-style: normal;
  color: var(--c-crimson-deep);
}

.philosophy-body p {
  color: var(--c-ink-2);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 2.2;
  margin-bottom: 1.4em;
}
.philosophy-body strong { color: var(--c-ink); font-weight: 700; }

.philosophy-sign {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.28em;
  color: var(--c-crimson-deep);
  margin-top: 8px;
}

/* ============ 15. Process(タイムライン) ============ */
.process-list {
  position: relative;
  max-width: 760px;
  margin-inline: auto;
  padding-left: 44px;
}
/* ベースの縦線 + 進捗線(JSがscaleYを更新) */
.process-list::before {
  content: "";
  position: absolute;
  left: 9px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--c-line);
}
.process-line {
  position: absolute;
  left: 9px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--c-crimson), var(--c-crimson-deep));
  transform: scaleY(var(--p, 0));
  transform-origin: top;
}

.process-step {
  position: relative;
  padding: 0 0 clamp(36px, 5vw, 56px);
}
.process-step:last-child { padding-bottom: 0; }
.process-step::before {
  content: "";
  position: absolute;
  left: -41px; top: 9px;
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 2px solid var(--c-line-strong);
  background: var(--c-bg);
  transition: border-color 0.4s, background 0.4s, box-shadow 0.4s;
}
.process-step.is-active::before {
  border-color: var(--c-crimson);
  background: var(--c-crimson);
  box-shadow: 0 0 0 6px rgba(216, 69, 60, 0.15);
}

.process-step .step-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--c-crimson-bright);
  display: block;
  margin-bottom: 8px;
}
.process-step h3 {
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 900;
  margin-bottom: 10px;
}
.process-step p { color: var(--c-text-2); font-size: 0.93rem; max-width: 38em; }

/* ============ 16. Company ============ */
/* サブページ共通ヒーロー */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(64px, 10vw, 120px)) 0 clamp(56px, 8vw, 96px);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -40%; right: -15%;
  width: 60vw; height: 60vw;
  max-width: 760px; max-height: 760px;
  background: radial-gradient(circle, rgba(142, 38, 31, 0.22) 0%, transparent 62%);
  filter: blur(36px);
  pointer-events: none;
}
.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--c-muted);
  margin-bottom: 22px;
}
.page-hero .breadcrumb a { color: var(--c-muted); transition: color 0.3s; }
.page-hero .breadcrumb a:hover { color: var(--c-cream); }
.page-hero .breadcrumb .sep { color: var(--c-crimson); }
.page-hero h1 {
  font-size: clamp(2.2rem, 5.6vw, 4rem);
  font-weight: 900;
  line-height: 1.25;
  word-break: keep-all;
  overflow-wrap: anywhere;
  margin-bottom: 18px;
}
.page-hero .hero-en {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(0.8rem, 1.4vw, 0.95rem);
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--c-crimson-bright);
  display: block;
  margin-bottom: 18px;
}
.page-hero .lead { color: var(--c-text-2); max-width: 42em; }

/* Vision / Mission */
.vm-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.vm-card {
  padding: clamp(30px, 4vw, 48px);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}
.vm-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 64px; height: 2px;
  background: var(--c-crimson);
}
.vm-card .vm-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--c-crimson-bright);
  display: block;
  margin-bottom: 18px;
}
.vm-card .vm-copy {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  line-height: 1.9;
  word-break: keep-all;
  overflow-wrap: anywhere;
  margin-bottom: 14px;
}
.vm-card ul { display: flex; flex-direction: column; gap: 14px; }
.vm-card ul li {
  position: relative;
  padding-left: 26px;
  color: var(--c-text-2);
  font-size: 0.95rem;
}
.vm-card ul li::before {
  content: "";
  position: absolute;
  left: 2px; top: 0.7em;
  width: 10px; height: 10px;
  border: 2px solid var(--c-crimson);
  transform: rotate(45deg);
}

/* Values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.value-card {
  padding: 30px 24px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: transform 0.4s var(--ease-out), border-color 0.4s;
}
.value-card:hover { transform: translateY(-5px); border-color: rgba(216, 69, 60, 0.4); }
.value-card .value-en {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  display: block;
  margin-bottom: 4px;
}
.value-card .value-en::first-letter { color: var(--c-crimson-bright); }
.value-card .value-ja {
  font-size: 0.78rem;
  color: var(--c-crimson-bright);
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 14px;
}
.value-card p { font-size: 0.85rem; color: var(--c-muted); line-height: 1.9; }

/* 創業者 */
.founders-box {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.founder-card {
  padding: clamp(28px, 3.6vw, 40px);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}
.founder-card .founder-role {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.26em;
  color: var(--c-crimson-bright);
  display: block;
  margin-bottom: 14px;
}
.founder-card h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 12px; word-break: keep-all;
  overflow-wrap: anywhere; }
.founder-card p { font-size: 0.88rem; color: var(--c-text-2); }

.specialist-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}
.specialist-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--c-text-2);
  border: 1px solid var(--c-line);
  border-radius: 999px;
  padding: 6px 16px;
  transition: border-color 0.3s, color 0.3s;
}
.specialist-tags span:hover { border-color: var(--c-crimson); color: var(--c-cream); }

/* 会社概要テーブル */
.company-table {
  max-width: 820px;
  margin-inline: auto;
  border-top: 1px solid var(--c-line-strong);
}
.company-table .row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  padding: 24px 8px;
  border-bottom: 1px solid var(--c-line);
}
.company-table dt {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--c-muted);
  padding-top: 4px;
}
.company-table dd { margin: 0; color: var(--c-text-2); font-size: 0.97rem; }
.company-table dd ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 6px;
}
.company-table dd ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.75em;
  width: 8px; height: 2px;
  background: var(--c-crimson);
}

/* ============ 17. Contact ============ */
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(32px, 4.5vw, 64px);
  align-items: start;
}

.contact-form-box {
  padding: clamp(28px, 4vw, 48px);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.form-field { margin-bottom: 26px; }
.form-field label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.req, .opt {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  border-radius: 4px;
  padding: 2px 8px;
}
.req { background: var(--c-crimson); color: #fff; }
.opt { background: transparent; color: var(--c-muted); border: 1px solid var(--c-line-strong); }

.form-control {
  width: 100%;
  padding: 14px 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-line-strong);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.6;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
.form-control::placeholder { color: rgba(146, 142, 132, 0.55); }
.form-control:focus {
  outline: none;
  border-color: var(--c-crimson);
  box-shadow: 0 0 0 4px rgba(216, 69, 60, 0.14);
  background: var(--c-bg-2);
}
textarea.form-control { resize: vertical; min-height: 150px; }

select.form-control {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23e9e2d0' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
  cursor: pointer;
}
select.form-control:invalid { color: rgba(146, 142, 132, 0.7); }
select.form-control option { color: var(--c-ink); background: #fff; }

.form-consent {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 28px;
  font-size: 0.88rem;
  color: var(--c-text-2);
}
.form-consent input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px; height: 20px;
  flex: none;
  margin-top: 4px;
  border: 1px solid var(--c-line-strong);
  border-radius: 5px;
  background: var(--c-bg);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.25s, border-color 0.25s;
}
.form-consent input[type="checkbox"]::after {
  content: "";
  width: 10px; height: 6px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) scale(0);
  margin-top: -2px;
  transition: transform 0.25s var(--ease-out);
}
.form-consent input[type="checkbox"]:checked {
  background: var(--c-crimson);
  border-color: var(--c-crimson);
}
.form-consent input[type="checkbox"]:checked::after { transform: rotate(-45deg) scale(1); }
.form-consent a { color: var(--c-cream); text-decoration: underline; text-underline-offset: 3px; }
.form-consent a:hover { color: var(--c-crimson-bright); }

.form-submit { width: 100%; justify-content: center; }
.form-submit[disabled] { opacity: 0.55; pointer-events: none; }

/* 送信結果メッセージ */
.form-result {
  display: none;
  margin-bottom: 24px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  line-height: 1.8;
}
.form-result.show { display: block; }
.form-result.ok {
  background: rgba(88, 179, 104, 0.12);
  border: 1px solid rgba(88, 179, 104, 0.45);
  color: #a9dcb3;
}
.form-result.ng {
  background: rgba(216, 69, 60, 0.1);
  border: 1px solid rgba(216, 69, 60, 0.45);
  color: #f0a8a3;
}

/* FAQ(detailsベース) */
.faq-box h2 { margin-bottom: 22px; }
.faq-item {
  border-bottom: 1px solid var(--c-line);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: color 0.3s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--c-crimson-bright); }
.faq-item summary .faq-q {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.faq-item summary .faq-q::before {
  content: "Q";
  font-family: var(--font-mono);
  color: var(--c-crimson-bright);
  font-size: 0.85rem;
}
/* +/× アイコン */
.faq-icon {
  position: relative;
  width: 26px; height: 26px;
  border: 1px solid var(--c-line-strong);
  border-radius: 50%;
  flex: none;
  transition: transform 0.4s var(--ease-out), border-color 0.3s;
}
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 10px; height: 1.5px;
  background: var(--c-cream);
  transform: translate(-50%, -50%);
}
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform 0.3s; }
.faq-item[open] .faq-icon { transform: rotate(45deg); border-color: var(--c-crimson); }
.faq-answer {
  padding: 0 36px 22px 30px;
  font-size: 0.88rem;
  color: var(--c-text-2);
}
.faq-answer p { position: relative; }
.faq-answer p::before {
  content: "A";
  position: absolute;
  left: -26px;
  font-family: var(--font-mono);
  color: var(--c-muted);
  font-size: 0.85rem;
}

/* 所在地・地図 */
.map-card {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-surface);
}
.map-card iframe {
  display: block;
  width: 100%;
  height: 420px;
  border: 0;
  filter: grayscale(1) contrast(1.04) opacity(0.92);
  transition: filter 0.5s;
}
.map-card:hover iframe { filter: grayscale(0.2) contrast(1) opacity(1); }
.map-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  align-items: center;
  padding: 22px 26px;
  border-top: 1px solid var(--c-line);
}
.map-meta .addr { color: var(--c-text-2); font-size: 0.93rem; }
.map-meta .station {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--c-muted);
}

/* バッジ列(contactヒーロー等) */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ============ 18. CTA / Footer ============ */
.cta-section {
  position: relative;
  padding: var(--section-pad) 0;
  overflow: hidden;
}
.cta-box {
  position: relative;
  text-align: center;
  padding: clamp(56px, 8vw, 110px) clamp(24px, 5vw, 80px);
  border: 1px solid var(--c-line);
  border-radius: calc(var(--radius) + 8px);
  background:
    radial-gradient(ellipse 70% 90% at 50% 110%, rgba(142, 38, 31, 0.35), transparent 70%),
    var(--c-surface);
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(233, 226, 208, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(233, 226, 208, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 90% at 50% 100%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 50% 100%, #000, transparent 75%);
  pointer-events: none;
}
.cta-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--c-crimson-bright);
  display: block;
  margin-bottom: 20px;
}
.cta-box h2 {
  font-size: clamp(1.8rem, 4.4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.4;
  word-break: keep-all;
  overflow-wrap: anywhere;
  margin-bottom: 18px;
}
.cta-box > p {
  color: var(--c-text-2);
  max-width: 38em;
  margin: 0 auto 36px;
}
.cta-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 34px;
}

/* Footer */
.site-footer {
  position: relative;
  border-top: 1px solid var(--c-line);
  background: var(--c-bg-2);
  padding: clamp(56px, 8vw, 90px) 0 120px;
  overflow: hidden;
}
.footer-top {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: clamp(32px, 5vw, 72px);
  margin-bottom: 56px;
}
.footer-brand .brand { font-size: 1.9rem; margin: 0 0 16px; display: inline-flex; }
.footer-tag { color: var(--c-muted); font-size: 0.88rem; max-width: 26em; }

.footer-head {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 18px;
}
.footer-nav ul { display: flex; flex-direction: column; gap: 12px; }
.footer-nav a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text-2);
  font-size: 0.92rem;
  transition: color 0.3s, gap 0.3s var(--ease-out);
}
.footer-nav a::before {
  content: "";
  width: 12px; height: 1px;
  background: var(--c-crimson);
  transition: width 0.3s var(--ease-out);
}
.footer-nav a:hover { color: var(--c-text); gap: 14px; }
.footer-nav a:hover::before { width: 20px; }

.footer-info { color: var(--c-text-2); font-size: 0.9rem; }
.footer-info p { margin-bottom: 8px; }

.footer-bottom {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--c-line);
}
.footer-bottom p { font-size: 0.78rem; color: var(--c-muted); }
.footer-credit {
  font-family: var(--font-mono);
  font-size: 0.68rem !important;
  letter-spacing: 0.12em;
}
.footer-credit .accent { color: var(--c-crimson-bright); }

/* 巨大ウォーターマーク */
.footer-watermark {
  position: absolute;
  left: 50%;
  bottom: -0.34em;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(8rem, 24vw, 22rem);
  line-height: 1;
  letter-spacing: 0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(233, 226, 208, 0.07);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

/* ============ 19. Privacy / 404 ============ */
.prose { max-width: 820px; margin-inline: auto; }
.prose-block {
  padding: 30px 0;
  border-bottom: 1px solid var(--c-line);
}
.prose-block h2 {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 14px;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.prose-block h2 .num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: var(--c-crimson-bright);
  flex: none;
}
.prose-block p, .prose-block li { color: var(--c-text-2); font-size: 0.93rem; }
.prose-block ul { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.prose-block ul li { position: relative; padding-left: 20px; }
.prose-block ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.8em;
  width: 8px; height: 2px;
  background: var(--c-crimson);
}
.prose-meta {
  text-align: right;
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-muted);
  line-height: 2.2;
}

/* 404 */
.notfound {
  min-height: 100svh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 120px var(--pad) 80px;
  position: relative;
  overflow: hidden;
}
.notfound-code {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(6rem, 22vw, 15rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 2px rgba(216, 69, 60, 0.7);
  position: relative;
  display: inline-block;
}
.notfound h1 { font-size: clamp(1.3rem, 3vw, 1.8rem); font-weight: 900; margin: 20px 0 14px; }
.notfound p { color: var(--c-text-2); margin-bottom: 36px; }

/* ============ 20. Loader / Cursor / Progress / ToTop ============ */
.loader {
  position: fixed;
  inset: 0;
  z-index: 400;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--c-bg);
  transition: opacity 0.5s var(--ease-soft), visibility 0.5s;
}
/* JSが html に is-loading を付けた時だけ表示(JS無効でも安全) */
.is-loading .loader, .is-leaving-loader .loader { display: flex; }
.is-leaving-loader .loader { opacity: 0; visibility: hidden; }

.loader-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 6vw, 3.4rem);
  letter-spacing: 0.14em;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.loader-mark .l-char {
  display: inline-block;
  animation: loader-rise 0.7s var(--ease-out) both;
  animation-delay: calc(var(--i) * 0.07s);
}
.loader-mark .l-dot {
  width: 9px; height: 9px;
  background: var(--c-crimson);
  animation: loader-rise 0.7s var(--ease-out) both;
  animation-delay: 0.35s;
}
@keyframes loader-rise {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: none; }
}
.loader-bar {
  position: absolute;
  left: 50%;
  bottom: 38%;
  transform: translateX(-50%);
  width: min(200px, 40vw);
  height: 1px;
  background: var(--c-line);
  overflow: hidden;
}
.loader-bar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--c-crimson);
  transform: scaleX(0);
  transform-origin: left;
  animation: loader-fill 0.9s var(--ease-soft) 0.15s forwards;
}
@keyframes loader-fill { to { transform: scaleX(1); } }

/* カスタムカーソル(fine pointerのみJSが有効化) */
.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  z-index: 500;
  pointer-events: none;
  border-radius: 50%;
  opacity: 0;
}
.has-cursor .cursor-dot, .has-cursor .cursor-ring { opacity: 1; }
.cursor-dot {
  width: 6px; height: 6px;
  background: var(--c-crimson-bright);
  transform: translate(-50%, -50%);
}
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid rgba(233, 226, 208, 0.45);
  transform: translate(-50%, -50%);
  transition: width 0.3s var(--ease-out), height 0.3s var(--ease-out), border-color 0.3s, background 0.3s;
}
.cursor-ring.is-hover {
  width: 56px; height: 56px;
  border-color: var(--c-crimson);
  background: rgba(216, 69, 60, 0.08);
}
/* JSカーソル有効時もネイティブカーソルは残す(操作性優先で非表示にしない) */

/* スクロール進捗バー */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  z-index: 250;
  width: 100%;
  height: 2px;
  background: transparent;
  pointer-events: none;
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--c-crimson-deep), var(--c-crimson-bright));
  transform: scaleX(var(--sp, 0));
  transform-origin: left;
}

/* ページトップへ */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 180;
  width: 50px; height: 50px;
  border: 1px solid var(--c-line-strong);
  border-radius: 50%;
  background: rgba(10, 10, 14, 0.7);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--c-cream);
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.35s, transform 0.35s var(--ease-out), visibility 0.35s, background 0.3s, border-color 0.3s;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--c-crimson); border-color: var(--c-crimson); color: #fff; }

/* ============ 21. Reveal(スクロール出現) ============ */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.9s var(--ease-soft),
    transform 0.9s var(--ease-out);
  transition-delay: calc(var(--d, 0) * 1ms);
  will-change: opacity, transform;
}
[data-reveal="left"]  { transform: translateX(-36px); }
[data-reveal="right"] { transform: translateX(36px); }
[data-reveal="zoom"]  { transform: scale(0.94); }
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}
/* JS無効時は隠さない */
.no-js [data-reveal] { opacity: 1; transform: none; }

/* 子要素を順に出す */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s var(--ease-soft), transform 0.8s var(--ease-out);
}
[data-stagger].is-in > * {
  opacity: 1;
  transform: none;
}
[data-stagger].is-in > *:nth-child(1) { transition-delay: 0.05s; }
[data-stagger].is-in > *:nth-child(2) { transition-delay: 0.15s; }
[data-stagger].is-in > *:nth-child(3) { transition-delay: 0.25s; }
[data-stagger].is-in > *:nth-child(4) { transition-delay: 0.35s; }
[data-stagger].is-in > *:nth-child(5) { transition-delay: 0.45s; }
[data-stagger].is-in > *:nth-child(6) { transition-delay: 0.55s; }
[data-stagger].is-in > *:nth-child(7) { transition-delay: 0.65s; }
[data-stagger].is-in > *:nth-child(8) { transition-delay: 0.75s; }
.no-js [data-stagger] > * { opacity: 1; transform: none; }

/* ============ 22. Responsive ============ */
@media (max-width: 1024px) {
  .strengths-grid, .works-grid { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .detail-sticky { position: static; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-meta { display: none; }
}

@media (max-width: 900px) {
  :root { --header-h: 64px; }

  /* モバイルナビ: 全画面オーバーレイ */
  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 210;
    background: rgba(10, 10, 14, 0.92);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    display: grid;
    place-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.45s var(--ease-soft), visibility 0.45s;
  }
  .site-nav.open { opacity: 1; visibility: visible; }
  .site-nav ul {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
  .site-nav a {
    font-size: 1.5rem;
    font-weight: 900;
    padding: 12px 20px;
    flex-direction: column-reverse;
    gap: 6px;
    transform: translateY(24px);
    opacity: 0;
    transition: transform 0.55s var(--ease-out), opacity 0.45s;
  }
  .site-nav.open a { transform: none; opacity: 1; }
  .site-nav.open li:nth-child(1) a { transition-delay: 0.08s; }
  .site-nav.open li:nth-child(2) a { transition-delay: 0.16s; }
  .site-nav.open li:nth-child(3) a { transition-delay: 0.24s; }
  .site-nav.open li:nth-child(4) a { transition-delay: 0.32s; }
  .site-nav.open li:nth-child(5) a { transition-delay: 0.4s; }
  .site-nav a .nav-en { font-size: 0.62rem; }
  .site-nav a::after { display: none; }

  .service-row {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .service-go { display: none; }
  .service-num { order: -1; }

  .contact-layout { grid-template-columns: 1fr; }
  .philosophy-grid { grid-template-columns: 1fr; gap: 40px; }
  /* 縦書きコピーはスマホで水平中央へ。grid既定のstretchを止めないと
     縦書きの行が block-start(=右端) に貼り付くため justify-self:center が必須。 */
  .philosophy-vertical { min-height: 7.5em; justify-self: center; text-align: center; }
  .founders-box, .vm-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .offer-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .work-card { grid-template-columns: 84px 1fr; gap: 16px; }
  .work-logo { width: 84px; height: 84px; }
  .news-item { grid-template-columns: 1fr; gap: 8px; padding: 20px 4px; }
  .news-cat { justify-self: start; }
  .company-table .row { grid-template-columns: 1fr; gap: 6px; padding: 18px 4px; }
  .hero { padding-top: calc(var(--header-h) + 24px); }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .map-card iframe { height: 300px; }
  .process-list { padding-left: 36px; }
  .to-top { right: 14px; bottom: 14px; width: 44px; height: 44px; }
  .scroll-cue { display: none; }
}

/* ============ 23. Reduced Motion / View Transitions ============ */
/* ページ間のクロスフェード(対応ブラウザのみ / MPA View Transitions) */
@view-transition { navigation: auto; }
::view-transition-old(root), ::view-transition-new(root) {
  animation-duration: 0.3s;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal], [data-stagger] > *,
  .hero-eyebrow, .hero-lead, .hero-actions, .hero-chips, .hero-meta {
    opacity: 1 !important;
    transform: none !important;
  }
  .hero-title .char { transform: none !important; }
  .marquee-track { animation: none !important; }
  ::view-transition-old(root), ::view-transition-new(root) { animation: none !important; }
}