/* ============================================
   2日間AIブートキャンプ販促LP — main.css
   編集誌風ダーク基調 + 紫グロウアクセント
   既存 AI_Bootcamp_Day1_私版.html のトークン継承
   ============================================ */

:root {
  /* === 編集誌カラー（既存トークン継承） === */
  --ink: #0a0908;
  --ink-soft: #1a1716;
  --ink-mid: #14110f;
  --paper: #f4f0e8;
  --paper-dim: #b8b1a3;
  --paper-mute: #8a8478;
  --coral: #e85a4f;
  --coral-deep: #c7453a;
  --gold: #c8a96a;
  --gold-dim: #8a7548;
  --line: rgba(244, 240, 232, 0.10);
  --line-strong: rgba(244, 240, 232, 0.28);

  /* === 新規：先進的アクセント === */
  --violet: #8b5cf6;
  --violet-deep: #6d28d9;
  --violet-glow: rgba(139, 92, 246, 0.35);
  --violet-glow-soft: rgba(139, 92, 246, 0.18);
  --cyan: #22d3ee;

  /* === タイポグラフィ === */
  --font-serif: 'Noto Serif JP', 'Times New Roman', serif;
  --font-sans: 'Inter Tight', -apple-system, 'Yu Gothic UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;

  /* === レイアウト === */
  --container: 1400px;
  --gutter: clamp(20px, 4vw, 60px);
}

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

html {
  scroll-behavior: smooth;
  background: var(--ink);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
  font-size: 16px;
}

::selection {
  background: var(--violet);
  color: var(--paper);
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
}

/* ノイズオーバーレイ */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .hero-matrix {
    display: none !important;
  }
}

/* ============================================
   NAVIGATION
   ============================================ */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(to bottom, rgba(10, 9, 8, 0.85), rgba(10, 9, 8, 0));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.brand {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--paper);
}

.brand .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--coral);
  border-radius: 50%;
  margin-right: 10px;
  vertical-align: middle;
  animation: pulse 2s ease-in-out infinite;
  box-shadow: 0 0 10px var(--coral);
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.nav-links {
  display: none;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.nav-links a {
  color: var(--paper-dim);
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--paper);
}

.nav-links .nav-cta {
  color: var(--violet);
}

.nav-links .nav-cta:hover {
  color: var(--paper);
  text-shadow: 0 0 12px var(--violet-glow);
}

@media (min-width: 768px) {
  .nav-links { display: flex; }
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 96px var(--gutter) 72px;
  overflow: hidden;
  background: var(--ink);
}

.hero-matrix {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
  pointer-events: none;
  background: var(--ink);
}

.hero-video-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 55%, transparent 0%, rgba(10, 9, 8, 0.18) 60%, rgba(10, 9, 8, 0.45) 100%),
    linear-gradient(180deg, rgba(10, 9, 8, 0.35) 0%, rgba(10, 9, 8, 0) 22%, rgba(10, 9, 8, 0) 75%, rgba(10, 9, 8, 0.55) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
}

.hero-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 14px;
  margin-bottom: 28px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--paper-dim);
  animation: fadeInUp 1s ease 0.2s both;
}

@media (min-width: 768px) {
  .hero-meta {
    flex-direction: row;
    justify-content: space-between;
    font-size: 11px;
  }
  .hero-meta-right { text-align: right; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-bottom: 20px;
  animation: fadeInUp 1.2s ease 0.4s both;
}

.hero-title .line {
  display: block;
}

.hero-title .line-1 {
  color: var(--paper);
}

.hero-title .line-3 {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--paper);
  background: linear-gradient(90deg, var(--violet), var(--paper) 60%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-style: italic;
  font-weight: 700;
}

.hero-subtitle {
  font-family: var(--font-sans);
  font-size: clamp(14px, 1.45vw, 17px);
  max-width: 640px;
  color: var(--paper-dim);
  line-height: 1.7;
  margin-bottom: 20px;
  animation: fadeInUp 1s ease 0.7s both;
}

.hero-subtitle em {
  font-style: normal;
  color: var(--violet);
  font-weight: 600;
  text-shadow: 0 0 16px var(--violet-glow);
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
  animation: fadeInUp 1s ease 0.85s both;
}

.chip {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--paper-dim);
  background: rgba(244, 240, 232, 0.02);
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
  animation: fadeInUp 1s ease 1s both;
}

@media (min-width: 640px) {
  .hero-cta {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

.hero-note {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--paper-mute);
  animation: fadeInUp 1s ease 1.15s both;
}

.scroll-cue {
  position: absolute;
  right: var(--gutter);
  bottom: 40px;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  color: var(--paper-dim);
  display: none;
}

.scroll-cue::after {
  content: '';
  display: block;
  margin-top: 12px;
  width: 1px;
  height: 60px;
  background: linear-gradient(var(--violet), transparent);
  animation: scrollLine 2.5s ease infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@media (min-width: 1024px) {
  .scroll-cue { display: flex; align-items: center; }
}

/* ============================================
   CTA BUTTONS
   ============================================ */
.cta-primary,
.cta-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  text-align: center;
  white-space: nowrap;
}

.cta-primary {
  background: linear-gradient(135deg, var(--violet) 0%, var(--violet-deep) 100%);
  color: var(--paper);
  border: 1px solid transparent;
  box-shadow: 0 0 28px var(--violet-glow);
}

.cta-primary:hover,
.cta-primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 0 48px var(--violet-glow);
}

.cta-secondary {
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--gold-dim);
}

.cta-secondary:hover,
.cta-secondary:focus-visible {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

.cta-large {
  padding: 22px 36px;
  font-size: 14px;
}

.cta-primary .arrow,
.cta-secondary .arrow {
  font-family: var(--font-sans);
  font-size: 16px;
  transition: transform 0.3s ease;
}

.cta-primary:hover .arrow,
.cta-secondary:hover .arrow {
  transform: translateX(4px);
}

.cta-row {
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ============================================
   CHAPTER COMMON
   ============================================ */
.chapter {
  position: relative;
  padding: clamp(80px, 12vw, 160px) var(--gutter);
  background: var(--ink);
  overflow: hidden;
}

.chapter::before {
  content: '';
  position: absolute;
  top: 0;
  left: var(--gutter);
  right: var(--gutter);
  height: 1px;
  background: var(--line-strong);
}

.chapter-inner {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
}

.chapter-meta {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 32px;
}

.chapter-number {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--violet);
}

.chapter-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--paper-mute);
}

.chapter-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 72px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 36px;
  color: var(--paper);
}

.chapter-title em {
  font-style: italic;
  font-weight: 300;
  color: var(--violet);
  text-shadow: 0 0 24px var(--violet-glow-soft);
}

.chapter-lead {
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--paper-dim);
  max-width: 760px;
  margin-bottom: 48px;
}

.chapter-lead strong {
  color: var(--paper);
  font-weight: 600;
}

/* ============================================
   SECTION 2: 課題提起
   ============================================ */
.pain-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 60px;
}

@media (min-width: 768px) {
  .pain-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

.pain-card {
  padding: 32px 28px;
  background: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  transition: border-color 0.4s ease, transform 0.4s ease;
}

.pain-card:hover {
  border-color: var(--coral);
  transform: translateY(-4px);
}

.pain-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--coral);
  margin-bottom: 18px;
}

.pain-title {
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 14px;
  color: var(--paper);
}

.pain-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.pivot {
  margin-top: 60px;
  padding: 48px 32px;
  text-align: center;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--font-serif);
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.pivot p { margin: 0; }

.pivot-em {
  color: var(--violet);
  font-style: italic;
  font-weight: 700;
  text-shadow: 0 0 24px var(--violet-glow-soft);
}

/* ============================================
   SECTION 3: プロダクト価値
   ============================================ */
.value-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 60px;
}

@media (min-width: 768px) {
  .value-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.value-card {
  position: relative;
  padding: 40px 32px;
  background: linear-gradient(180deg, var(--ink-soft) 0%, var(--ink-mid) 100%);
  border: 1px solid var(--line);
  border-radius: 4px;
  transition: border-color 0.4s ease, box-shadow 0.4s ease, transform 0.4s ease;
}

.value-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--violet), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.value-card:hover {
  border-color: var(--violet);
  box-shadow: 0 0 50px var(--violet-glow-soft);
  transform: translateY(-4px);
}

.value-card:hover::before {
  opacity: 1;
}

.value-num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.25em;
  color: var(--violet);
  margin-bottom: 24px;
  display: block;
}

.value-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.8vw, 28px);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 18px;
  color: var(--paper);
}

.value-desc {
  font-size: 14px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.value-call {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--paper-dim);
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

.value-call em {
  font-style: normal;
  color: var(--paper);
  font-weight: 600;
}

/* ============================================
   SECTION 4: カリキュラム
   ============================================ */
.day-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--line-strong);
}

.day-tab {
  padding: 16px 32px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--paper-mute);
  border-bottom: 2px solid transparent;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.day-tab.is-active {
  color: var(--paper);
  border-bottom-color: var(--violet);
}

.day-tab:hover {
  color: var(--paper);
}

.day-panel {
  display: none;
}

.day-panel.is-active {
  display: block;
  animation: fadeInUp 0.6s ease;
}

.day-header {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.day-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--violet);
  margin-bottom: 12px;
}

.day-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 16px;
  color: var(--paper);
}

.day-concept {
  font-size: clamp(14px, 1.4vw, 16px);
  line-height: 1.8;
  color: var(--paper-dim);
  max-width: 640px;
}

.timeline {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-row {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  align-items: baseline;
  gap: 16px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease;
}

.timeline-row:hover {
  background: rgba(139, 92, 246, 0.04);
}

.t-time {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--violet);
}

.t-name {
  font-family: var(--font-sans);
  font-size: clamp(13px, 1.4vw, 15px);
  line-height: 1.55;
  color: var(--paper);
}

.t-dur {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--paper-mute);
  white-space: nowrap;
}

@media (min-width: 768px) {
  .timeline-row {
    grid-template-columns: 90px 1fr 80px;
    gap: 24px;
    padding: 22px 8px;
  }
}

/* ============================================
   SECTION 5: 講師実績
   ============================================ */
.instructor-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 1024px) {
  .instructor-block {
    grid-template-columns: 320px 1fr;
    gap: 64px;
  }
}

.instructor-photo {
  aspect-ratio: 4 / 5;
  background: var(--ink-soft);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.instructor-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
  display: block;
  filter: brightness(0.95) contrast(1.05);
  transition: transform 0.8s ease, filter 0.4s ease;
}

.instructor-photo:hover img {
  transform: scale(1.03);
  filter: brightness(1) contrast(1.05);
}

.instructor-photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 100%, rgba(139, 92, 246, 0.18), transparent 55%),
    linear-gradient(180deg, transparent 60%, rgba(10, 9, 8, 0.45) 100%);
  pointer-events: none;
}

.instructor-caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--paper-mute);
  line-height: 1.8;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.instructor-desc {
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.95;
  color: var(--paper-dim);
  margin-bottom: 18px;
}

.instructor-tag {
  display: inline-block;
  margin: 8px 0 36px;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
  border: 1px solid var(--gold-dim);
  border-radius: 4px;
}

.instructor-pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 16px;
}

@media (min-width: 768px) {
  .instructor-pillars { grid-template-columns: repeat(3, 1fr); }
}

.pillar {
  padding: 24px 20px;
  background: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  transition: border-color 0.3s ease;
}

.pillar:hover { border-color: var(--violet); }

.pillar-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--violet);
  margin-bottom: 12px;
}

.pillar-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--paper);
}

.pillar-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-dim);
}

/* ============================================
   SECTION 6: 助成金
   ============================================ */
.subsidy-table-wrap {
  margin: 40px 0;
  overflow-x: auto;
}

.subsidy-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 480px;
}

.subsidy-table th,
.subsidy-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.subsidy-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper-mute);
  border-bottom: 1px solid var(--line-strong);
}

.subsidy-table tbody th {
  font-weight: 500;
  color: var(--paper-dim);
  width: 40%;
}

.subsidy-table tbody td {
  color: var(--paper);
}

.subsidy-table tbody td strong {
  color: var(--violet);
  font-size: 18px;
  font-weight: 700;
}

/* シミュレーター */
.simulator {
  margin-top: 60px;
  padding: clamp(32px, 5vw, 56px);
  background: linear-gradient(180deg, var(--ink-soft) 0%, var(--ink-mid) 100%);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}

.simulator::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--violet), var(--cyan), var(--violet));
}

.simulator-head {
  margin-bottom: 32px;
}

.simulator-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--paper);
}

.simulator-desc {
  font-size: 14px;
  color: var(--paper-dim);
}

.simulator-controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 36px;
}

@media (min-width: 768px) {
  .simulator-controls {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
}

.control label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--paper-mute);
  margin-bottom: 10px;
}

.control input[type="number"],
.control select {
  width: 100%;
  padding: 12px 14px;
  background: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 14px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.control input[type="number"]:focus,
.control select:focus {
  outline: none;
  border-color: var(--violet);
  box-shadow: 0 0 0 3px var(--violet-glow-soft);
}

.input-with-suffix {
  position: relative;
}

.input-with-suffix .suffix {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper-mute);
  pointer-events: none;
}

.control small {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  color: var(--paper-mute);
  line-height: 1.5;
}

.slider-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
}

.slider-wrap input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--line-strong);
  border-radius: 2px;
  outline: none;
}

.slider-wrap input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--violet);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 16px var(--violet-glow);
  transition: transform 0.2s ease;
}

.slider-wrap input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }

.slider-wrap input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--violet);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 16px var(--violet-glow);
}

.slider-wrap output {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--violet);
  min-width: 48px;
  text-align: right;
}

.simulator-result {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 4px;
  margin-bottom: 20px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 8px 0;
}

.result-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--paper-dim);
}

.result-value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}

.result-row--total {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--line-strong);
}

.result-row--total .result-label {
  font-size: 13px;
  color: var(--paper);
}

.result-row--total .result-value {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--violet);
  text-shadow: 0 0 20px var(--violet-glow);
}

.simulator-note {
  font-size: 11px;
  line-height: 1.7;
  color: var(--paper-mute);
  margin-bottom: 24px;
}

.simulator-basis {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--paper-mute);
  margin: 4px 0 0;
}

/* ============================================
   SECTION 7: 最終CTA
   ============================================ */
.cta-block {
  position: relative;
  padding: clamp(80px, 12vw, 160px) var(--gutter);
  background:
    radial-gradient(ellipse at 50% 50%, var(--violet-glow-soft) 0%, transparent 60%),
    var(--ink);
  overflow: hidden;
  text-align: center;
}

.cta-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: var(--gutter);
  right: var(--gutter);
  height: 1px;
  background: var(--line-strong);
}

.cta-inner {
  max-width: 920px;
  margin: 0 auto;
}

.cta-block .chapter-meta {
  justify-content: center;
}

.cta-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(32px, 6.5vw, 76px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
  color: var(--paper);
}

.cta-title em {
  font-style: italic;
  font-weight: 300;
  color: var(--violet);
  text-shadow: 0 0 28px var(--violet-glow);
}

.cta-lead {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--paper-dim);
  margin-bottom: 56px;
}

.cta-lead strong {
  color: var(--paper);
}

.cta-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  margin-bottom: 36px;
}

@media (min-width: 768px) {
  .cta-stack {
    flex-direction: row;
    justify-content: center;
  }
}

.cta-sub {
  font-size: 13px;
  line-height: 1.85;
  color: var(--paper-mute);
  margin-bottom: 16px;
}

.cta-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--gold);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  padding: clamp(60px, 8vw, 100px) var(--gutter) 40px;
  background: var(--ink);
  border-top: 1px solid var(--line-strong);
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1fr 1.4fr;
    gap: 80px;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-tag {
  font-family: var(--font-serif);
  font-size: 14px;
  font-style: italic;
  color: var(--paper-dim);
}

.footer-info {
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.footer-info p { margin-bottom: 6px; }

.footer-info a {
  color: var(--paper);
  border-bottom: 1px solid var(--line);
  transition: border-color 0.3s ease, color 0.3s ease;
}

.footer-info a:hover {
  color: var(--violet);
  border-color: var(--violet);
}

.footer-meta {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--paper-mute);
}

.footer-links {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding-top: 32px;
  margin-top: 24px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.footer-links a {
  color: var(--paper-dim);
  transition: color 0.3s ease;
}

.footer-links a:hover { color: var(--paper); }

.footer-mark {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 32px;
  padding-bottom: 4px;
}

.footer-mark-logo {
  display: block;
  height: 28px;
  width: auto;
  opacity: 0.45;
  filter: grayscale(0.6) brightness(1.05);
  transition: opacity 0.3s ease, filter 0.3s ease;
}

.footer-mark-logo:hover {
  opacity: 0.7;
  filter: grayscale(0) brightness(1);
}

.copyright {
  grid-column: 1 / -1;
  text-align: center;
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--paper-mute);
}

/* ============================================
   STICKY CTA (Mobile)
   ============================================ */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: linear-gradient(to top, rgba(10, 9, 8, 0.95), rgba(10, 9, 8, 0.8));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid var(--line-strong);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}

.sticky-cta.is-visible {
  transform: translateY(0);
}

.sticky-link {
  display: block;
  padding: 14px;
  background: linear-gradient(135deg, var(--violet) 0%, var(--violet-deep) 100%);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-align: center;
  border-radius: 4px;
  box-shadow: 0 0 24px var(--violet-glow);
}

@media (min-width: 768px) {
  .sticky-cta { display: none; }
}

/* ============================================
   REVEAL ANIMATION (GSAP fallback CSS)
   ============================================ */
.reveal {
  opacity: 1;
}

/* JS が動かない場合のフォールバック：そのまま表示 */
.no-js .reveal { opacity: 1; transform: none; }