/* ============================================================
   style.css — Aoki Design Studio / Navy Atlas リデザイン
   コンセプト: Deep Navy × Off White × Amber Gold
              技術力 × 王道 × 落ち着き
   ============================================================ */

/* ─── CSS カスタムプロパティ ──────────────────────────────── */
:root {
  /* ── カラー ───────────────────────────────────────────── */
  --color-navy:        #162037;
  --color-navy-mid:    #1E2D4A;
  --color-navy-deep:   #0E1726;
  --color-navy-light:  #EEF2F8;

  --color-bg:          #F7F5F0;
  --color-bg-alt:      #EEF2F8;
  --color-bg-dark:     #162037;
  --color-surface:     #FFFFFF;
  --color-border:      #DDE2EA;
  --color-border-dark: rgba(255,255,255,0.10);
  --color-rule:        rgba(22,32,55,0.08);

  --color-text:        #1A1F2E;
  --color-text-sub:    #4A5568;
  --color-text-muted:  #8A95A3;
  --color-text-on-dark:#EEF2F8;

  --color-accent:      #C8962E;
  --color-accent-dark: #A87820;
  --color-accent-light:#F5EDD6;

  --color-success:     #3A8C6F;
  --color-error:       #C94E4E;

  /* ── タイポグラフィ ──────────────────────────────────── */
  --font-sans:   "Inter", "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-mono:   "JetBrains Mono", "Fira Code", monospace;

  --text-xs:   0.6875rem;
  --text-sm:   0.8125rem;
  --text-base: 1rem;
  --text-md:   1.0625rem;
  --text-lg:   1.25rem;
  --text-xl:   1.5rem;
  --text-2xl:  2rem;
  --text-3xl:  2.75rem;
  --text-4xl:  3.75rem;

  /* ── スペーシング ────────────────────────────────────── */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* ── ボーダーラジウス ────────────────────────────────── */
  --radius-sm:   3px;
  --radius-md:   5px;
  --radius-lg:   8px;
  --radius-xl:   12px;
  --radius-full: 9999px;

  /* ── シャドウ ──────────────────────────────────────── */
  --shadow-sm: 0 1px 4px rgba(22,32,55,0.08);
  --shadow-md: 0 4px 16px rgba(22,32,55,0.10);
  --shadow-lg: 0 8px 32px rgba(22,32,55,0.14);
  --shadow-xl: 0 16px 48px rgba(22,32,55,0.18);

  /* ── トランジション ──────────────────────────────────── */
  --transition-fast: 150ms cubic-bezier(0.4,0,0.2,1);
  --transition-base: 280ms cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 480ms cubic-bezier(0.4,0,0.2,1);

  /* ── レイアウト ──────────────────────────────────────── */
  --container-max: 1140px;
  --container-pad: var(--space-6);
  --header-h: 68px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  /* ページ上部 3px ゴールドライン */
  border-top: 3px solid var(--color-accent);
}

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

/* ─── ユーティリティ ──────────────────────────────────────── */
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}
.sp-hide { display: none; }
@media (min-width: 768px) { .sp-hide { display: inline; } }

/* ─── スキップリンク ──────────────────────────────────────── */
.skip-link {
  position: fixed; top: -100%; left: var(--space-4);
  background: var(--color-accent); color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  z-index: 9999; font-size: var(--text-sm); font-weight: 600;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; }

/* ─── ボタン ─────────────────────────────────────────────── */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.8rem var(--space-8);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
  line-height: 1;
  overflow: hidden;
  z-index: 0;
  transition: color var(--transition-base),
              background-color var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}
.btn:disabled { opacity: 0.38; cursor: not-allowed; pointer-events: none; }

/* fill-from-bottom オーバーレイ */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateY(101%);
  transition: transform 0.28s cubic-bezier(0.4,0,0.2,1);
  z-index: -1;
  border-radius: var(--radius-md);
}

/* Primary — Navy + Gold fill-up */
.btn--primary {
  background-color: var(--color-navy);
  color: var(--color-text-on-dark);
  border: 2px solid var(--color-navy);
}
.btn--primary::after { background-color: var(--color-accent); }
.btn--primary:hover:not(:disabled)::after { transform: translateY(0); }
.btn--primary:hover:not(:disabled) { border-color: var(--color-accent); }

/* Outline — Navy border + Navy fill */
.btn--outline {
  background-color: transparent;
  color: var(--color-navy);
  border: 2px solid var(--color-navy);
}
.btn--outline::after { background-color: var(--color-navy); }
.btn--outline:hover:not(:disabled)::after { transform: translateY(0); }
.btn--outline:hover:not(:disabled) { color: var(--color-text-on-dark); }

/* Outline-light — white border (on dark sections) */
.btn--outline-light {
  background-color: transparent;
  color: var(--color-text-on-dark);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn--outline-light::after { background-color: rgba(255,255,255,0.12); }
.btn--outline-light:hover:not(:disabled)::after { transform: translateY(0); }
.btn--outline-light:hover:not(:disabled) { border-color: rgba(255,255,255,0.8); }

/* Ghost */
.btn--ghost {
  background: transparent;
  border: 2px solid transparent;
  color: var(--color-text-muted);
}
.btn--ghost:hover:not(:disabled) { color: var(--color-navy); background: var(--color-navy-light); }

/* Sizes */
.btn--sm  { padding: 0.55rem var(--space-5); font-size: 0.75rem; }
.btn--lg  { padding: 1rem var(--space-10); font-size: var(--text-base); }
.btn--block { width: 100%; }

/* ─── セクションヘッダー ──────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}
.section-header__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.section-header__label::before,
.section-header__label::after {
  content: '';
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: currentColor;
  flex-shrink: 0;
}
.section-header__title {
  font-size: clamp(1.7rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}
.section-header__desc {
  color: var(--color-text-sub);
  font-size: var(--text-sm);
  line-height: 2;
  max-width: 560px;
  margin-inline: auto;
}
/* dark section variant */
.section-header--light .section-header__title { color: var(--color-text-on-dark); }
.section-header--light .section-header__desc  { color: rgba(238,242,248,0.65); }

/* ─── ヘッダー ────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 3px; left: 0; right: 0; /* body border-top: 3px */
  z-index: 100;
  height: var(--header-h);
  background-color: transparent;
  transition: background-color var(--transition-base),
              box-shadow var(--transition-base);
}
.site-header.scrolled {
  background-color: rgba(22,32,55,0.97);
  backdrop-filter: blur(16px);
  box-shadow: 0 2px 20px rgba(22,32,55,0.25);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  height: 100%;
}
.site-header__logo { margin-right: auto; }
.site-header__logo .logo-text {
  font-size: var(--text-md);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text-on-dark);
  transition: color var(--transition-fast);
}

/* ハンバーガー */
.site-header__menu-toggle {
  background: none; border: none; cursor: pointer;
  padding: var(--space-2);
  display: flex; align-items: center; justify-content: center;
}
.hamburger {
  display: block; width: 22px; height: 1.5px;
  background-color: var(--color-text-on-dark);
  position: relative;
  transition: background-color var(--transition-fast);
}
.hamburger::before, .hamburger::after {
  content: ""; display: block;
  width: 22px; height: 1.5px;
  background-color: var(--color-text-on-dark);
  position: absolute;
  transition: all var(--transition-base);
}
.hamburger::before { top: -7px; }
.hamburger::after  { top:  7px; }
[aria-expanded="true"] .hamburger { background-color: transparent; }
[aria-expanded="true"] .hamburger::before { top: 0; transform: rotate(45deg); }
[aria-expanded="true"] .hamburger::after  { top: 0; transform: rotate(-45deg); }

/* ナビゲーション */
.site-header__nav {
  display: none;
  align-items: center;
  gap: var(--space-8);
}
.site-header__nav a {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(238,242,248,0.75);
  transition: color var(--transition-fast);
  position: relative;
}
.site-header__nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1.5px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}
.site-header__nav a:hover { color: var(--color-text-on-dark); }
.site-header__nav a:hover::after { width: 100%; }
.site-header__nav .btn { margin-left: var(--space-2); }

@media (min-width: 768px) {
  .site-header__nav { display: flex; }
  .site-header__menu-toggle { display: none; }
}

/* 言語切り替え */
.lang-toggle {
  display: flex; align-items: center; gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: 0.6875rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(238,242,248,0.6);
  border: 1.5px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  background: none;
}
.lang-toggle:hover { color: var(--color-text-on-dark); border-color: var(--color-accent); }

/* テーマトグル */
.theme-toggle {
  background: none; border: none; cursor: pointer;
  font-size: 1rem; padding: var(--space-1);
  opacity: 0.6; transition: opacity var(--transition-fast);
}
.theme-toggle:hover { opacity: 1; }

/* スマホメニュー */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background-color: var(--color-navy-deep);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-16);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text-on-dark);
  opacity: 0.85;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}
.mobile-menu a:hover { opacity: 1; color: var(--color-accent); }

/* ─── ヒーローセクション ─────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
  background-color: var(--color-navy);
  /* ドットグリッド + 左サイドに温かみのある光 */
  background-image:
    radial-gradient(ellipse 70% 90% at 15% 50%, rgba(200,150,46,0.07) 0%, transparent 65%),
    radial-gradient(circle, rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: auto, 36px 36px;
}

/* ドットグリッドは background-image に統合済み */
.hero::before {
  content: '';
  position: absolute; inset: 0;
  /* 右上コーナーに深みを追加 */
  background: radial-gradient(ellipse 50% 60% at 90% 10%, rgba(10,15,28,0.6) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

/* 底部フェード（off-whiteへ） */
.hero::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 180px;
  background: linear-gradient(to bottom, transparent, var(--color-bg));
  z-index: 1;
  pointer-events: none;
}

/* ウォーターマーク「30」 */
.hero__watermark {
  position: absolute;
  right: -2vw; top: 50%;
  transform: translateY(-50%);
  font-size: clamp(180px, 36vw, 580px);
  font-weight: 900;
  line-height: 0.85;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(255,255,255,0.05);
  pointer-events: none; user-select: none;
  z-index: 0;
  letter-spacing: -0.06em;
}

/* ゴールドライン */
.hero__line {
  position: absolute;
  top: calc(var(--header-h) + 24px);
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, var(--color-accent) 0%, rgba(200,150,46,0.3) 60%, transparent 100%);
  transform-origin: left center;
  animation: lineGrow 1.8s cubic-bezier(0.76,0,0.24,1) 0.3s both;
  z-index: 2;
}

@keyframes lineGrow {
  from { transform: scaleX(0); opacity: 0; }
  to   { transform: scaleX(1); opacity: 1; }
}

/* コンテンツ */
.hero__content {
  position: relative; z-index: 2;
  padding-block: var(--space-24) var(--space-32);
  max-width: 800px;
}

/* ラベル */
.hero__index {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-10);
  opacity: 0;
  animation: fadeInUp 0.9s ease 0.5s forwards;
}
.hero__index-num {
  font-size: 0.625rem; font-weight: 700;
  color: var(--color-accent); letter-spacing: 0.3em;
}
.hero__index-line { width: 32px; height: 1.5px; background-color: var(--color-accent); flex-shrink: 0; }
.hero__index-label {
  font-size: 0.625rem; letter-spacing: 0.3em;
  color: rgba(238,242,248,0.45); text-transform: uppercase;
}

/* アイブロウ */
.hero__eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.25em;
  color: var(--color-accent);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: var(--space-4);
  opacity: 0;
  animation: fadeInUp 0.9s ease 0.65s forwards;
}

/* タイトル */
.hero__title {
  display: flex; flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  opacity: 0;
  animation: fadeInUp 0.9s ease 0.8s forwards;
}
.hero__title-main {
  font-size: clamp(2.4rem, 6.5vw, 5.2rem);
  font-weight: 800;
  line-height: 1.02;
  color: var(--color-text-on-dark);
  letter-spacing: -0.03em;
}
.hero__title-sub {
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 400;
  color: rgba(238,242,248,0.55);
  letter-spacing: 0.02em;
  line-height: 1.5;
}

/* 説明文 */
.hero__description {
  font-size: var(--text-sm);
  color: rgba(238,242,248,0.65);
  margin-bottom: var(--space-10);
  line-height: 1.9;
  letter-spacing: 0.01em;
  opacity: 0;
  animation: fadeInUp 0.9s ease 0.95s forwards;
}

/* CTA */
.hero__cta {
  display: flex; flex-direction: column;
  gap: var(--space-3); align-items: flex-start;
  margin-bottom: var(--space-16);
  opacity: 0;
  animation: fadeInUp 0.9s ease 1.1s forwards;
}
@media (min-width: 768px) {
  .hero__cta { flex-direction: row; align-items: center; }
}

/* 統計 */
.hero__stats {
  display: flex;
  justify-content: center;
  gap: clamp(var(--space-10), 8vw, var(--space-24));
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-8);
  opacity: 0;
  animation: fadeInUp 0.9s ease 1.25s forwards;
}
.hero__stat { text-align: center; }

/* ── 円形ゲージ ──────────────────────────────────────────── */
/* r=36, 周長=226.19, 240°弧=150.80, 残=75.39 */
.stat-gauge {
  position: relative;
  width: 140px; height: 140px;
  margin: 0 auto;
}
.stat-gauge__svg {
  width: 100%; height: 100%;
  overflow: visible;
}
.stat-gauge__track,
.stat-gauge__fill {
  fill: none;
  stroke-width: 5;
  stroke-linecap: round;
  /* 240°分の弧 + 残りギャップ */
  stroke-dasharray: 150.80 75.39;
  /* 8時の位置（240°=頂点から時計回り）から開始: SVG 0°=3時 → 150°回転 */
  transform: rotate(150deg);
  transform-origin: 50px 50px;
}
.stat-gauge__track {
  stroke: rgba(255,255,255,0.12);
}
.stat-gauge__fill {
  stroke: var(--color-accent);
  stroke-dashoffset: 150.80; /* 初期: 完全に空 */
  transition: stroke-dashoffset 1.6s cubic-bezier(0.22, 1, 0.36, 1);
  filter: drop-shadow(0 0 6px rgba(200,150,46,0.85)) drop-shadow(0 0 12px rgba(200,150,46,0.4));
}
.stat-gauge__fill.run {
  stroke-dashoffset: var(--gauge-offset, 0);
}
.stat-gauge__inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding-bottom: 10px; /* ゲージ開口部に合わせて上寄せ */
}
.stat-gauge__value {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat-gauge__unit {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0;
  line-height: 1;
  vertical-align: 0.15em;
}
.stat-gauge__label {
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(238,242,248,0.5);
  font-weight: 600;
  white-space: nowrap;
  margin-top: 4px;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── シミュレーターセクション ────────────────────────────── */
.simulator {
  padding-block: var(--space-8);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.simulator .section-header {
  margin-bottom: var(--space-4);
}
.simulator .section-header__title {
  font-size: clamp(1.3rem, 2.2vw, 1.75rem);
}

/* プログレスインジケーター */
.progress-indicator {
  margin-bottom: var(--space-4);
}
.progress-indicator__steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.step-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  position: relative;
}
.step-indicator__circle {
  width: 32px; height: 32px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition-base), border-color var(--transition-base);
  position: relative; z-index: 1;
}
.step-indicator__number {
  font-size: var(--text-xs); font-weight: 700;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}
.step-indicator__label {
  font-size: 0.6875rem; font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
  white-space: nowrap;
}
.step-indicator__connector {
  width: clamp(24px, 8vw, 80px); height: 2px;
  background-color: var(--color-border);
  margin-bottom: 1.5rem;
  transition: background-color var(--transition-base);
  flex-shrink: 0;
}
/* Active */
.step-indicator.active .step-indicator__circle {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
}
.step-indicator.active .step-indicator__number { color: #fff; }
.step-indicator.active .step-indicator__label  { color: var(--color-navy); }
/* Done */
.step-indicator.done .step-indicator__circle {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent);
}
.step-indicator.done .step-indicator__number { color: var(--color-accent-dark); }
.step-indicator.done .step-indicator__connector { background-color: var(--color-accent); }

/* プログレスバー */
.progress-track {
  height: 3px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  max-width: 480px;
  margin-inline: auto;
}
.progress-track__fill {
  height: 100%;
  background: linear-gradient(to right, var(--color-navy), var(--color-accent));
  border-radius: var(--radius-full);
  transition: width 0.5s cubic-bezier(0.4,0,0.2,1);
  width: 0%;
}

/* シミュレーター本体レイアウト */
.simulator__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}
@media (min-width: 900px) {
  .simulator__body {
    grid-template-columns: 1fr 280px;
    align-items: start;
  }
}

/* ステップパネル */
.step-panel { display: none; }
.step-panel.active { display: block; animation: fadeInUp 0.4s ease both; }

.step-panel__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.step-panel__step-num {
  font-size: var(--text-xs); font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--color-accent);
}
.step-panel__hint {
  font-size: var(--text-sm); font-weight: 400;
  color: var(--color-text-muted);
}

/* ラジオ / チェックボックスグループ */
.radio-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
.checkbox-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (max-width: 480px) {
  .radio-group, .checkbox-group {
    grid-template-columns: 1fr;
  }
}

/* JS生成: .radio-card / .checkbox-card */
.radio-card, .checkbox-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: border-color var(--transition-base),
              background var(--transition-base),
              box-shadow var(--transition-base);
  background: var(--color-surface);
  position: relative;
}
.radio-card input[type="radio"],
.checkbox-card input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--color-navy);
  flex-shrink: 0;
  margin-top: 2px;
  cursor: pointer;
}
.radio-card:hover, .checkbox-card:hover {
  border-color: var(--color-navy);
  box-shadow: 0 0 0 4px rgba(22,32,55,0.06);
}
.radio-card.selected, .checkbox-card.selected {
  border-color: var(--color-navy);
  background-color: var(--color-navy-light);
  box-shadow: 0 0 0 4px rgba(22,32,55,0.08);
}
.radio-card__content, .checkbox-card__content {
  display: flex; flex-direction: column; gap: var(--space-1); flex: 1;
}
.radio-card__label, .checkbox-card__label {
  font-weight: 700; font-size: var(--text-sm);
  color: var(--color-text);
}
.radio-card__price, .checkbox-card__price {
  font-size: var(--text-xs); color: var(--color-accent);
  font-weight: 600;
}
.radio-card__desc, .checkbox-card__desc {
  font-size: var(--text-xs); color: var(--color-text-muted);
  line-height: 1.6;
}
.radio-card__check, .checkbox-card__check {
  /* hidden — using native input */
  display: none;
}

/* select-pop マイクロアニメーション */
.radio-card.select-pop, .checkbox-card.select-pop {
  animation: selectPop 0.22s ease;
}
@keyframes selectPop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.02); }
  100% { transform: scale(1); }
}

/* 価格プレビューのフラッシュ */
.price-preview__amount.price-flash {
  animation: priceFlash 0.4s ease;
}

/* ステップパネルのスライドイン */
.step-panel.active.slide-in {
  animation: fadeInUp 0.35s ease both;
}

/* 概算プレビュー（サイドバー） */
.price-preview {
  background: var(--color-navy);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  text-align: center;
  color: var(--color-text-on-dark);
  position: sticky;
  top: calc(var(--header-h) + var(--space-6));
  box-shadow: var(--shadow-lg);
}
.price-preview__label {
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: rgba(238,242,248,0.55);
  margin-bottom: var(--space-3);
}
.price-preview__amount {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-3);
  animation: priceFlash 0.4s ease;
}
@keyframes priceFlash {
  0%   { transform: scale(1.1); color: #fff; }
  100% { transform: scale(1); }
}
.price-preview__note {
  font-size: var(--text-xs);
  color: rgba(238,242,248,0.45);
  line-height: 1.7;
}

/* 割引コードエリア */
.discount-code-area {
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: var(--color-navy-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}
.discount-code-inner { display: flex; flex-direction: column; gap: var(--space-3); }
.discount-code-label { font-size: var(--text-sm); font-weight: 600; color: var(--color-text-sub); }
.discount-code-form { display: flex; gap: var(--space-2); }
.discount-code-input { flex: 1; }
.discount-msg { font-size: var(--text-xs); min-height: 1.2em; font-weight: 600; }
.discount-msg--ok  { color: var(--color-success); }
.discount-msg--err { color: var(--color-error); }
.compare-winner { color: var(--color-accent) !important; }

/* ナビゲーション */
.simulator__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-6);
  padding: var(--space-4) var(--space-4) var(--space-3);
  border-top: 1px solid var(--color-border);
  gap: var(--space-3);
  position: sticky;
  bottom: 0;
  background: var(--color-surface);
  z-index: 10;
  box-shadow: 0 -4px 16px rgba(22,32,55,0.06);
}

/* ─── フォーム共通 ────────────────────────────────────────── */
.form-input {
  display: block;
  width: 100%;
  padding: 0.75rem var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
}
.form-input::placeholder { color: var(--color-text-muted); }
.form-input:focus {
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(22,32,55,0.10);
}
.form-input.error { border-color: var(--color-error); }
.form-textarea { min-height: 160px; resize: vertical; }

/* ─── 見積結果パネル ──────────────────────────────────────── */
.result {
  padding-block: var(--space-24);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
.result__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 768px) {
  .result__body { grid-template-columns: 1fr 1fr 1fr; }
}

/* カード共通 */
.result__total-card,
.result__breakdown-card,
.result__plan-card {
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}
.result__total-card {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-text-on-dark);
  text-align: center;
}
.result__card-title {
  font-size: var(--text-sm); font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-text-sub);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.result__total-label {
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(238,242,248,0.55);
  margin-bottom: var(--space-3);
}
.result__total-amount {
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-3);
  animation: priceFlash 0.5s ease;
}
.result__total-days {
  font-size: var(--text-sm); color: rgba(238,242,248,0.65);
  margin-bottom: var(--space-3);
}
.result__total-note {
  font-size: var(--text-xs); color: rgba(238,242,248,0.4); line-height: 1.6;
}

/* 内訳テーブル */
.breakdown-table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.breakdown-table th {
  text-align: left; padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs); font-weight: 600;
  color: var(--color-text-muted); letter-spacing: 0.1em; text-transform: uppercase;
  border-bottom: 2px solid var(--color-border);
}
.breakdown-table td {
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-sub);
}
.breakdown-table td:last-child { text-align: right; font-weight: 600; color: var(--color-text); }
.breakdown-table tfoot td { font-weight: 800; color: var(--color-navy); border-bottom: none; border-top: 2px solid var(--color-navy); }

.result__plan-name { font-size: var(--text-lg); font-weight: 700; color: var(--color-navy); margin-bottom: var(--space-3); }
.result__plan-desc { font-size: var(--text-sm); color: var(--color-text-sub); line-height: 1.8; }
.result__expiry { text-align: center; font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-6); }

/* 概算注記カード */
.result__notes-card {
  background: var(--color-accent-light);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  border-left: 4px solid var(--color-accent);
}
.result__disclaimer {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  margin-bottom: var(--space-3);
  font-weight: 600;
}
.result__includes {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* 割引行 */
.breakdown-discount td { color: var(--color-accent-dark); }
.breakdown-discount td:last-child { color: var(--color-accent-dark); }

/* 見積プレビューバナー（フォーム内） */
.quote-preview-banner {
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
}
.quote-preview-banner__title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-2);
}
.quote-preview-banner__summary {
  font-size: var(--text-xs);
  color: var(--color-text-sub);
  white-space: pre-line;
  line-height: 1.7;
}

/* 比較パネル */
.compare-panel {
  margin-top: var(--space-8);
  padding: var(--space-8);
  background: var(--color-navy-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.compare-panel__title { font-size: var(--text-md); font-weight: 700; margin-bottom: var(--space-6); text-align: center; }
.compare-panel__grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: var(--space-4); align-items: center; }
.compare-col { padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.compare-col--vs { text-align: center; font-weight: 800; color: var(--color-accent); font-size: var(--text-lg); border: none; background: none; }
.compare-col__name { font-size: var(--text-sm); font-weight: 700; color: var(--color-text-sub); margin-bottom: var(--space-2); }
.compare-col__price { font-size: var(--text-xl); font-weight: 800; color: var(--color-navy); margin-bottom: var(--space-1); }
.compare-col__days { font-size: var(--text-xs); color: var(--color-text-muted); margin-bottom: var(--space-3); }

/* メール受け取り */
.result__email-option {
  margin-top: var(--space-8);
  padding: var(--space-6);
  background: var(--color-navy-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.result__email-label { font-size: var(--text-sm); font-weight: 600; margin-bottom: var(--space-3); }
.result__email-form { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.result__email-input { flex: 1; min-width: 200px; }

/* 主役アクション：相談導線（最大幅制限で目立たせる） */
.result__actions-primary {
  margin-top: var(--space-10);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* 脇役アクション：保存・共有 */
.result__actions-secondary {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-top: var(--space-5);
}
.result__actions-note {
  margin-top: var(--space-3);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* 上級者向け：比較機能（折りたたみ） */
.result__compare-details {
  margin-top: var(--space-6);
  text-align: center;
}
.result__compare-summary {
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  user-select: none;
  padding: var(--space-2) var(--space-4);
}
.result__compare-summary:hover { color: var(--color-text-sub); }
.result__compare-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-top: var(--space-4);
}

/* ─── サービスセクション ─────────────────────────────────── */
.service {
  position: relative;
  padding-block: var(--space-24);
  background-color: var(--color-navy);
  overflow: hidden;
}

/* 上下ゴールドライン */
.service::before, .service::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-accent) 30%, var(--color-accent) 70%, transparent);
  opacity: 0.4;
}
.service::before { top: 0; }
.service::after  { bottom: 0; }

/* コンステレーションキャンバス */
.constellation-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}

.service .container { position: relative; z-index: 1; }

.service__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.service-card {
  padding: var(--space-10) var(--space-8);
  background: var(--color-navy);
  position: relative;
  transition: background var(--transition-base);
  display: flex; flex-direction: column; gap: var(--space-3);
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 2px;
  background: var(--color-accent);
  transition: width 0.45s cubic-bezier(0.4,0,0.2,1);
}
.service-card:hover { background: var(--color-navy-mid); }
.service-card:hover::before { width: 100%; }

.service-card__icon {
  font-size: var(--text-xl);
  color: var(--color-accent);
  opacity: 0.8;
  line-height: 1;
  margin-bottom: var(--space-2);
}
.service-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-on-dark);
}
.service-card__desc {
  font-size: var(--text-sm);
  color: rgba(238,242,248,0.55);
  line-height: 1.85;
  flex: 1;
}
.service-card__price {
  font-size: var(--text-xs); font-weight: 700;
  color: var(--color-accent); letter-spacing: 0.08em;
  margin-top: var(--space-2);
}

/* ─── 料金プランセクション ───────────────────────────────── */
.pricing {
  padding-block: var(--space-24);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
  align-items: start;
}

/* JS生成の料金カード */
.pricing-card {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-8);
  background: var(--color-surface);
  position: relative;
  transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}
.pricing-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.pricing-card--featured {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-text-on-dark);
  box-shadow: var(--shadow-xl);
  transform: translateY(-8px);
}
.pricing-card--featured:hover { transform: translateY(-12px); }
.pricing-card__badge {
  position: absolute;
  top: -1px; left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: 0.625rem; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase;
  padding: var(--space-1) var(--space-4);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}
.pricing-card__name {
  font-size: var(--text-sm); font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.pricing-card__price {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
  font-weight: 800;
  color: inherit;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-2);
}
.pricing-card__price span { font-size: var(--text-sm); font-weight: 500; }
.pricing-card__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}
.pricing-card--featured .pricing-card__desc { color: rgba(238,242,248,0.55); }
.pricing-card__features {
  display: flex; flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}
.pricing-card--featured .pricing-card__features { border-color: rgba(255,255,255,0.12); }
.pricing-card__feature {
  display: flex; align-items: flex-start; gap: var(--space-3);
  font-size: var(--text-sm); color: var(--color-text-sub);
  line-height: 1.6;
}
.pricing-card--featured .pricing-card__feature { color: rgba(238,242,248,0.75); }
.pricing-card__feature--excluded {
  opacity: 0.38;
  text-decoration: line-through;
}
.pricing-card__feature-mark {
  font-weight: 800;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 1px;
  min-width: 14px;
}
.pricing-card__feature--excluded .pricing-card__feature-mark {
  color: var(--color-text-muted);
}

/* ─── ユースケースセクション ─────────────────────────────── */
.usecase {
  padding-block: var(--space-24);
  background: var(--color-navy-light);
  border-bottom: 1px solid var(--color-border);
}
.usecase__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
@media (min-width: 900px) {
  .usecase__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* JS生成のユースケースカード */
.usecase-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
  min-width: 0; /* グリッド内のオーバーフロー防止 */
}
.usecase-card:hover {
  border-color: var(--color-navy);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.usecase-card__icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}
.usecase-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}
.usecase-card__title {
  font-size: var(--text-sm); font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  word-break: keep-all;
  overflow-wrap: break-word;
}
.usecase-card__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
  overflow-wrap: break-word;
}
.usecase-card__recommend {
  font-size: var(--text-xs); font-weight: 700;
  color: var(--color-accent);
  margin-top: auto;
}

/* ─── 実績・制作事例 ─────────────────────────────────────── */
.works {
  padding-block: var(--space-24);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.works__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.works-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.works-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.works-card__thumb {
  overflow: hidden;
  aspect-ratio: 5/3;
  background: var(--color-navy-light);
}
.works-card__thumb svg { width: 100%; height: 100%; object-fit: cover; }
.works-card__body {
  padding: var(--space-6);
  display: flex; flex-direction: column; gap: var(--space-3);
}
.works-card__tag {
  display: inline-block;
  font-size: 0.625rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
}
.works-card__title {
  font-size: var(--text-md); font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
}
.works-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: 1.8;
  flex: 1;
}
.works-card__meta {
  display: flex; gap: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.works-card__meta > div { display: flex; flex-direction: column; gap: var(--space-1); }
.works-card__meta dt {
  font-size: 0.625rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-text-muted);
}
.works-card__meta dd { font-size: var(--text-sm); font-weight: 700; color: var(--color-text); }

/* スクロール表示アニメーション (ui.js が .revealed を付与) */
.reveal-item {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-item.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ─── お客様の声 ─────────────────────────────────────────── */
.testimonials {
  padding-block: var(--space-24);
  background: var(--color-navy);
}
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.testimonial-card {
  padding: var(--space-8);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.04);
  display: flex; flex-direction: column; gap: var(--space-5);
  transition: background var(--transition-base), border-color var(--transition-base);
}
.testimonial-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(200,150,46,0.3);
}
.testimonial-card__stars {
  color: var(--color-accent);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
}
.testimonial-card__body {
  font-size: var(--text-sm);
  color: rgba(238,242,248,0.75);
  line-height: 1.9;
  flex: 1;
  font-style: italic;
}
.testimonial-card__footer {
  display: flex; align-items: center; gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.testimonial-card__avatar {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm); font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.testimonial-card__cite { display: flex; flex-direction: column; gap: 2px; }
.testimonial-card__name {
  font-size: var(--text-sm); font-weight: 700;
  color: var(--color-text-on-dark);
  font-style: normal;
}
.testimonial-card__role {
  font-size: var(--text-xs);
  color: rgba(238,242,248,0.45);
  font-style: normal;
}

/* ─── FAQ ────────────────────────────────────────────────── */
.faq {
  position: relative;
  padding-block: var(--space-24);
  background: var(--color-bg);
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

/* ウォーターマーク「Q」 */
.faq__watermark {
  position: absolute;
  right: -4vw; top: 50%;
  transform: translateY(-50%);
  font-size: clamp(200px, 40vw, 600px);
  font-weight: 900;
  line-height: 0.85;
  color: transparent;
  -webkit-text-stroke: 2px rgba(22,32,55,0.04);
  pointer-events: none; user-select: none;
  z-index: 0;
  letter-spacing: -0.06em;
}
.faq .container { position: relative; z-index: 1; }

/* FAQリスト (JS生成: .faq__item / .faq__question / .faq__answer) */
.faq__list {
  max-width: 760px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.faq__item {
  border-bottom: 1px solid var(--color-border);
}
.faq__item:first-child { border-top: 1px solid var(--color-border); }
.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  font-size: var(--text-md); font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  transition: color var(--transition-fast);
  background: none; border: none;
  text-align: left; width: 100%;
  font-family: var(--font-sans);
}
.faq__question:hover { color: var(--color-navy); }
.faq__question-text { flex: 1; }
.faq__icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-border);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-md); font-weight: 300;
  color: var(--color-navy);
  transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
  line-height: 1;
}
.faq__item.open .faq__question { color: var(--color-navy); }
.faq__item.open .faq__icon {
  background: var(--color-navy);
  color: #fff;
  border-color: var(--color-navy);
}
.faq__answer {
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4,0,0.2,1);
  /* max-height は JS が inline style で制御 */
}
.faq__answer-inner {
  padding: 0 0 var(--space-6) 0;
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: 1.9;
}

/* ─── 予約セクション ─────────────────────────────────────── */
.booking {
  padding-block: var(--space-24);
  background: var(--color-navy-light);
  border-bottom: 1px solid var(--color-border);
}
.booking__inner {
  max-width: 880px;
  margin-inline: auto;
}
.booking__calendly {
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.booking__placeholder {
  display: flex; flex-direction: column; align-items: center;
  gap: var(--space-5); text-align: center;
  padding: var(--space-16) var(--space-8);
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
}
.booking__placeholder-icon { font-size: 3rem; }
.booking__placeholder-text {
  font-size: var(--text-sm); color: var(--color-text-sub); line-height: 1.8;
}
.booking__placeholder-text code {
  font-family: var(--font-mono);
  background: var(--color-navy-light);
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 0.85em;
}

/* ─── 相談フォームセクション ─────────────────────────────── */
.contact {
  position: relative;
  padding-block: var(--space-24);
  background: var(--color-bg);
  overflow: hidden;
}

/* ウォーターマーク「04」 */
.contact__watermark {
  position: absolute;
  left: -3vw; top: 50%;
  transform: translateY(-50%);
  font-size: clamp(180px, 36vw, 560px);
  font-weight: 900;
  line-height: 0.85;
  color: transparent;
  -webkit-text-stroke: 2px rgba(22,32,55,0.04);
  pointer-events: none; user-select: none;
  z-index: 0;
  letter-spacing: -0.06em;
}
.contact .container { position: relative; z-index: 1; }

/* フォームレイアウト */
.contact-form {
  max-width: 640px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-group--submit { align-items: center; gap: var(--space-3); }
.form-label {
  font-size: var(--text-sm); font-weight: 600;
  color: var(--color-text);
  display: flex; align-items: center; gap: var(--space-2);
}
.form-label--checkbox {
  flex-direction: row; align-items: flex-start; gap: var(--space-3);
  cursor: pointer; font-weight: 400;
}
.form-label--checkbox input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--color-navy);
  flex-shrink: 0; cursor: pointer;
  margin-top: 2px;
}
.form-label__required {
  font-size: 0.625rem; font-weight: 700; letter-spacing: 0.06em;
  background: var(--color-navy); color: #fff;
  padding: 1px var(--space-2); border-radius: var(--radius-sm);
}
.form-label__optional {
  font-size: 0.625rem; color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: 1px var(--space-2); border-radius: var(--radius-sm);
}
.form-error {
  font-size: var(--text-xs); color: var(--color-error); min-height: 1.2em;
  font-weight: 600;
}
.form-note {
  font-size: var(--text-xs); color: var(--color-text-muted); text-align: center;
  line-height: 1.7;
}

/* 確認画面 */
.form-confirm { max-width: 640px; margin-inline: auto; }
.form-confirm__title { font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-3); }
.form-confirm__desc { font-size: var(--text-sm); color: var(--color-text-sub); margin-bottom: var(--space-8); }
.form-confirm__list {
  display: flex; flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-8);
}
.form-confirm__list > div {
  display: grid; grid-template-columns: 120px 1fr;
  gap: var(--space-4); padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}
.form-confirm__list > div:last-child { border-bottom: none; }
.form-confirm__list dt { font-size: var(--text-xs); font-weight: 600; color: var(--color-text-muted); padding-top: 2px; }
.form-confirm__list dd { font-size: var(--text-sm); color: var(--color-text); }
.form-confirm__actions { display: flex; gap: var(--space-3); justify-content: center; }

/* 送信完了 */
.form-success {
  max-width: 480px; margin-inline: auto;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: var(--space-5);
  padding: var(--space-16) var(--space-8);
}
.form-success__icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-full);
  background: var(--color-success);
  color: #fff;
  font-size: var(--text-2xl); font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.form-success__title { font-size: var(--text-xl); font-weight: 700; }
.form-success__message { font-size: var(--text-sm); color: var(--color-text-sub); line-height: 1.9; }

/* 送信エラー */
.form-send-error {
  max-width: 480px; margin-inline: auto; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: var(--space-5);
  padding: var(--space-16) var(--space-8);
}
.form-send-error__icon {
  width: 64px; height: 64px; border-radius: var(--radius-full);
  background: var(--color-error); color: #fff;
  font-size: var(--text-2xl); font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.form-send-error__title { font-size: var(--text-xl); font-weight: 700; }
.form-send-error__message { font-size: var(--text-sm); color: var(--color-text-sub); line-height: 1.9; }
.form-send-error__message a { color: var(--color-navy); text-decoration: underline; }

/* ─── フッター ────────────────────────────────────────────── */
.site-footer {
  background-color: var(--color-navy-deep);
  padding-block: var(--space-12);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  text-align: center;
}
@media (min-width: 768px) {
  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}
.site-footer__logo {
  font-size: var(--text-md); font-weight: 700;
  color: var(--color-text-on-dark); letter-spacing: 0.04em;
}
.site-footer__links {
  display: flex; gap: var(--space-6); flex-wrap: wrap; justify-content: center;
}
.site-footer__links a {
  font-size: var(--text-xs); color: rgba(238,242,248,0.45);
  transition: color var(--transition-fast);
}
.site-footer__links a:hover { color: var(--color-accent); }
.site-footer__copy {
  font-size: var(--text-xs); color: rgba(238,242,248,0.3);
}

/* ─── Cookie バナー ─────────────────────────────────────── */
.cookie-banner {
  position: fixed; bottom: var(--space-5); left: var(--space-5); right: var(--space-5);
  z-index: 200;
  max-width: 680px; margin-inline: auto;
  background: var(--color-navy);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-6) var(--space-8);
  display: none;
  animation: fadeInUp 0.4s ease;
}
.cookie-banner[aria-hidden="false"] { display: block; }
.cookie-banner__inner { display: flex; flex-direction: column; gap: var(--space-4); }
@media (min-width: 640px) {
  .cookie-banner__inner { flex-direction: row; align-items: center; }
}
.cookie-banner__text {
  font-size: var(--text-xs); color: rgba(238,242,248,0.65); line-height: 1.7; flex: 1;
}
.cookie-banner__link { color: var(--color-accent); text-decoration: underline; }
.cookie-banner__actions { display: flex; gap: var(--space-2); flex-shrink: 0; }

/* ─── ダークモード ───────────────────────────────────────── */
[data-theme="dark"] {
  --color-bg:          #0E1726;
  --color-bg-alt:      #162037;
  --color-surface:     #1A2640;
  --color-border:      rgba(255,255,255,0.10);
  --color-text:        #EEF2F8;
  --color-text-sub:    #A0AEC0;
  --color-text-muted:  #6B7A99;
  --color-navy-light:  #1E2D4A;
}
[data-theme="dark"] .hero {
  background-color: var(--color-navy-deep);
}
[data-theme="dark"] .simulator,
[data-theme="dark"] .result,
[data-theme="dark"] .works {
  background-color: var(--color-bg);
}
[data-theme="dark"] .site-header.scrolled {
  background-color: rgba(14,23,38,0.97);
}
[data-theme="dark"] body {
  background-color: var(--color-bg);
}
[data-theme="dark"] .result__notes-card {
  background: rgba(200,150,46,0.10);
  border-left-color: var(--color-accent-dark);
}
[data-theme="dark"] .quote-preview-banner {
  background: rgba(200,150,46,0.10);
  border-color: var(--color-accent-dark);
}

/* ─── アニメーション（スクロールトリガー用） ──────────────── */
@keyframes revealFadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── レスポンシブ ──────────────────────────────────────── */
@media (max-width: 767px) {
  :root { --container-pad: var(--space-5); }

  .section-header { margin-bottom: var(--space-10); }
  .section-header__title { font-size: clamp(1.5rem, 7vw, 2.2rem); }

  .hero { min-height: 100dvh; }
  .hero__title-main { font-size: clamp(2rem, 10vw, 3.5rem); }
  .hero__watermark { right: -8vw; }
  .hero__stats { flex-wrap: wrap; gap: var(--space-6); }

  .simulator__body { grid-template-columns: 1fr; }
  .price-preview { position: static; }

  .radio-group, .checkbox-group { grid-template-columns: 1fr 1fr; }

  .result__body { grid-template-columns: 1fr; }
  .result__actions-secondary, .result__compare-actions { flex-direction: column; }
  .result__actions-secondary .btn, .result__compare-actions .btn { width: 100%; }

  .service__grid { grid-template-columns: 1fr 1fr; }

  .pricing__grid { grid-template-columns: 1fr; }
  .pricing-card--featured { transform: none; }

  .compare-panel__grid { grid-template-columns: 1fr; }
  .compare-col--vs { display: none; }

  .works__grid { grid-template-columns: 1fr; }
  .testimonials__grid { grid-template-columns: 1fr; }

  .form-confirm__list > div { grid-template-columns: 90px 1fr; }

  .simulator__nav { flex-wrap: wrap; }
  .simulator__nav .btn { flex: 1; min-width: 120px; }

  .faq__watermark { display: none; }
  .contact__watermark { display: none; }
}

@media (max-width: 480px) {
  .radio-group, .checkbox-group { grid-template-columns: 1fr; }
  .service__grid { grid-template-columns: 1fr; }
}

/* ─── アクセシビリティ ─────────────────────────────────── */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ═══════════════════════════════════════════════════════════
   追加スタイル — インタラクション強化
   ═══════════════════════════════════════════════════════════ */

/* ─── ヒーロー スクロールインジケーター ─────────────────── */
.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-10);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  z-index: 2;
  opacity: 0;
  animation: fadeInUp 0.9s ease 1.8s forwards;
  pointer-events: none;
}
.hero__scroll-label {
  font-size: 0.5rem;
  letter-spacing: 0.45em;
  color: rgba(238,242,248,0.3);
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  transform-origin: top;
  animation: scrollPulse 2.2s ease-in-out infinite 2.5s;
}
@keyframes scrollPulse {
  0%   { transform: scaleY(0); opacity: 1; transform-origin: top; }
  44%  { transform: scaleY(1); opacity: 1; transform-origin: top; }
  45%  { transform: scaleY(1); opacity: 1; transform-origin: bottom; }
  89%  { transform: scaleY(0); opacity: 0; transform-origin: bottom; }
  100% { transform: scaleY(0); opacity: 0; transform-origin: top; }
}
@media (max-width: 767px) { .hero__scroll-hint { display: none; } }

/* ─── シミュレーター ステップ方向スライド遷移 ──────────── */
@keyframes slideInFromRight {
  from { opacity: 0; transform: translateX(36px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideInFromLeft {
  from { opacity: 0; transform: translateX(-36px); }
  to   { opacity: 1; transform: translateX(0); }
}
.step-panel.slide-in-right {
  animation: slideInFromRight 0.34s cubic-bezier(0.4,0,0.2,1) both;
}
.step-panel.slide-in-left {
  animation: slideInFromLeft 0.34s cubic-bezier(0.4,0,0.2,1) both;
}

/* ─── 見積もり結果 スタガーリビール ─────────────────────── */
@keyframes resultRowIn {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}
.result-row-anim {
  animation: resultRowIn 0.38s ease both;
}
@keyframes resultCardIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.result-card-anim {
  animation: resultCardIn 0.5s ease both;
}

/* ─── グリッドアイテム スタガーリビール ─────────────────── */
/* サービスカード */
.service__grid .service-card:nth-child(1) { transition-delay: 0s; }
.service__grid .service-card:nth-child(2) { transition-delay: 0.06s; }
.service__grid .service-card:nth-child(3) { transition-delay: 0.12s; }
.service__grid .service-card:nth-child(4) { transition-delay: 0.18s; }

/* 料金カード */
.pricing__grid .reveal-item:nth-child(1) { transition-delay: 0s; }
.pricing__grid .reveal-item:nth-child(2) { transition-delay: 0.08s; }
.pricing__grid .reveal-item:nth-child(3) { transition-delay: 0.16s; }

/* ユースケースカード */
.usecase__grid .reveal-item:nth-child(1) { transition-delay: 0s; }
.usecase__grid .reveal-item:nth-child(2) { transition-delay: 0.06s; }
.usecase__grid .reveal-item:nth-child(3) { transition-delay: 0.12s; }
.usecase__grid .reveal-item:nth-child(4) { transition-delay: 0.18s; }

/* 制作実績カード */
.works__grid .reveal-item:nth-child(1) { transition-delay: 0s; }
.works__grid .reveal-item:nth-child(2) { transition-delay: 0.07s; }
.works__grid .reveal-item:nth-child(3) { transition-delay: 0.14s; }
.works__grid .reveal-item:nth-child(4) { transition-delay: 0.21s; }

/* テスティモニアルカード */
.testimonials__grid .reveal-item:nth-child(1) { transition-delay: 0s; }
.testimonials__grid .reveal-item:nth-child(2) { transition-delay: 0.08s; }
.testimonials__grid .reveal-item:nth-child(3) { transition-delay: 0.16s; }