/**
 * KEN Biz Academy — Main Stylesheet
 * Design: Dark immersive, purple-pink gradients, Noto Sans JP
 * Level 4 — Full Immersive
 */

/* ============================================================
   0. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================ */
:root {
  /* Colors */
  --color-bg:           #06061a;
  --color-bg-2:         #0a0a22;
  --color-bg-3:         #0e0e2e;
  --color-surface:      rgba(255, 255, 255, 0.03);
  --color-surface-2:    rgba(255, 255, 255, 0.06);
  --color-border:       rgba(255, 255, 255, 0.08);
  --color-text:         #f1f5f9;
  --color-text-muted:   rgba(241, 245, 249, 0.55);
  --color-primary:      #7c3aed;
  --color-primary-2:    #9d5cf6;
  --color-accent:       #ec4899;
  --color-accent-2:     #f472b6;
  --color-gold:         #f59e0b;
  --color-success:      #10b981;

  /* Gradients */
  --grad-primary:       linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
  --grad-glow:          linear-gradient(135deg, #9d5cf6 0%, #f472b6 100%);
  --grad-dark:          linear-gradient(180deg, #06061a 0%, #0e0e2e 100%);
  --grad-text:          linear-gradient(135deg, #a78bfa 0%, #f472b6 50%, #f59e0b 100%);

  /* Typography */
  --font-base:          'Noto Sans JP', 'Inter', sans-serif;
  --font-en:            'Inter', 'Noto Sans JP', sans-serif;
  --size-xs:            0.75rem;
  --size-sm:            0.875rem;
  --size-base:          1rem;
  --size-lg:            1.125rem;
  --size-xl:            1.25rem;
  --size-2xl:           1.5rem;
  --size-3xl:           1.875rem;
  --size-4xl:           2.25rem;
  --size-5xl:           3rem;
  --size-6xl:           3.75rem;
  --size-7xl:           4.5rem;
  --size-8xl:           6rem;
  --size-9xl:           8rem;

  /* Spacing */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  /* Animation */
  --dur-fast:    0.3s;
  --dur-normal:  0.6s;
  --dur-slow:    1.2s;
  --dur-cinema:  2.0s;
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-expo:   cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --max-w:       1200px;
  --max-w-wide:  1440px;
  --nav-h:       72px;
  --section-py:  var(--sp-32);

  /* Glow */
  --glow-primary: 0 0 40px rgba(124, 58, 237, 0.4), 0 0 80px rgba(124, 58, 237, 0.15);
  --glow-accent:  0 0 40px rgba(236, 72, 153, 0.4), 0 0 80px rgba(236, 72, 153, 0.15);
  --glow-gold:    0 0 30px rgba(245, 158, 11, 0.5), 0 0 60px rgba(245, 158, 11, 0.2);
}

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

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

body {
  font-family: var(--font-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  cursor: none; /* カスタムカーソル使用時 */
}

@media (pointer: coarse) {
  body { cursor: auto; }
}

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

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

ul, ol { list-style: none; }

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

/* ============================================================
   2. TYPOGRAPHY UTILITIES
   ============================================================ */
.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ============================================================
   3. CUSTOM CURSOR
   ============================================================ */
#cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
}

/* タッチデバイスではカーソル非表示 */
@media (hover: none) {
  #cursor { display: none; }
}

.cursor__dot {
  position: absolute;
  width: 8px;
  height: 8px;
  background: #fff;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: transform 0.1s ease;
}

.cursor__ring {
  position: absolute;
  width: 36px;
  height: 36px;
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease, width 0.3s ease, height 0.3s ease, opacity 0.3s ease;
}

body.cursor-hover .cursor__ring {
  width: 56px;
  height: 56px;
  border-color: var(--color-primary-2);
}

/* ============================================================
   4. NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(6, 6, 26, 0.7);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--dur-normal) ease, box-shadow var(--dur-normal) ease;
}

.navbar.scrolled {
  background: rgba(6, 6, 26, 0.92);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.navbar__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}

.navbar__logo {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  font-weight: 700;
}

.logo-ken {
  font-family: var(--font-en);
  font-size: var(--size-xl);
  font-weight: 900;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.05em;
}

.logo-biz {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  font-weight: 400;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.navbar__links a {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  transition: color var(--dur-fast) ease;
  white-space: nowrap;
}

.navbar__links a:hover {
  color: var(--color-text);
}

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border-radius: 100px;
  font-family: var(--font-base);
  font-size: var(--size-base);
  font-weight: 600;
  transition: transform var(--dur-fast) var(--ease-spring),
              box-shadow var(--dur-normal) ease,
              background var(--dur-fast) ease;
  white-space: nowrap;
  cursor: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: var(--glow-primary);
}

.btn--primary:hover {
  box-shadow: 0 0 60px rgba(124, 58, 237, 0.6), 0 0 100px rgba(124, 58, 237, 0.25);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-primary-2);
  background: rgba(124, 58, 237, 0.08);
}

.btn--nav {
  background: var(--grad-primary);
  color: #fff;
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--size-sm);
}

.btn--cta {
  flex-direction: column;
  gap: var(--sp-1);
  padding: var(--sp-4) var(--sp-8);
  background: var(--grad-primary);
  color: #fff;
  border-radius: 16px;
  font-size: var(--size-lg);
}

.btn--cta .btn__sub {
  font-size: var(--size-xs);
  font-weight: 400;
  opacity: 0.8;
}

.btn--glow {
  box-shadow: var(--glow-primary), inset 0 1px 0 rgba(255,255,255,0.15);
}

.btn--glow:hover {
  box-shadow: 0 0 80px rgba(124, 58, 237, 0.7), 0 0 160px rgba(124, 58, 237, 0.3),
              inset 0 1px 0 rgba(255,255,255,0.15);
}

.btn--xl {
  font-size: var(--size-xl);
  padding: var(--sp-6) var(--sp-12);
}

/* ============================================================
   6. SHARED SECTION LAYOUT
   ============================================================ */
.gsap-section {
  position: relative;
  overflow: hidden;
  padding: var(--section-py) var(--sp-6);
}

.gsap-section canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Inner wrapper max-width */
[class*="__inner"] {
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ============================================================
   7. SECTION: HERO
   ============================================================ */
.sec-hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--color-bg);
  padding-top: var(--nav-h);
  position: relative;
}

.sec-hero__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-6);
  padding-top: var(--sp-12);
}

/* Brand block */
.hero__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  opacity: 0;
  transform: translateY(20px);
}

.hero__brand-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.hero__brand-tagline {
  font-size: clamp(var(--size-xl), 2.5vw, var(--size-2xl));
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

.hero__brand-title {
  font-family: var(--font-en);
  font-size: clamp(var(--size-4xl), 6vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.hero__brand-ken {
  color: var(--color-text);
}

.hero__brand-academy {
  color: #c49a2a;
}

.hero__tagline {
  font-size: var(--size-lg);
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* Logo */
.hero__logo {
  opacity: 0;
  transform: translateY(20px);
}

.hero__logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.hero__badge {
  display: inline-block;
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary-2);
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.3);
  padding: var(--sp-2) var(--sp-4);
  border-radius: 100px;
  opacity: 0;
  transform: translateY(20px);
}

.hero__title {
  font-size: clamp(var(--size-5xl), 8vw, var(--size-8xl));
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero__line {
  display: block;
  overflow: hidden;
  opacity: 0;
  transform: translateY(80px);
  will-change: opacity, transform;
}

.hero__line--accent {
  color: transparent;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(var(--size-base), 2vw, var(--size-xl));
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.8;
  opacity: 0;
  transform: translateY(30px);
  will-change: opacity, transform;
  transform: translateY(20px);
}

.hero__cta-group {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  justify-content: center;
  align-self: center;
  opacity: 0;
  transform: translateY(20px);
}

.hero__scroll-indicator {
  position: fixed;
  bottom: var(--sp-8);
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  opacity: 0;
  z-index: 10;
  pointer-events: none;
}

.scroll-text {
  font-family: var(--font-en);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.4em;
  background: linear-gradient(135deg, #7c3aed, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.scroll-line {
  width: 1.5px;
  height: 56px;
  background: linear-gradient(to bottom, #7c3aed, #ec4899, transparent);
  animation: scrollPulse 1.8s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 0; }
  30%  { opacity: 1; }
  100% { transform: scaleY(1); transform-origin: top; opacity: 0; }
}

/* ============================================================
   8. SECTION: PAIN
   ============================================================ */
/* ── sec-pain ────────────────────────────────────────────── */
.sec-pain {
  position: relative;
  background: #080815;
  overflow: hidden;
}

#pain-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.sec-pain__inner {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--section-py) var(--sp-6);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

/* ── ラベル ── */
.pain__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-12);
  opacity: 0;
  transform: translateY(16px);
}

/* ── フック ── */
.pain__hook {
  margin-bottom: 14vh;
  width: 100%;
}

.pain__hook-pre {
  font-size: clamp(var(--size-xl), 3vw, var(--size-3xl));
  color: var(--color-text-muted);
  font-weight: 400;
  margin-bottom: var(--sp-3);
  opacity: 0;
  transform: translateY(24px);
}

.pain__hook-q {
  font-size: clamp(var(--size-4xl), 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #f1f5f9 20%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  transform: translateY(40px);
}

/* ── 課題リスト ── */
.pain__list {
  list-style: none;
  width: 100%;
  margin-bottom: 14vh;
}

.pain__item {
  display: flex;
  align-items: baseline;
  gap: var(--sp-4);
  font-size: clamp(var(--size-xl), 3.5vw, var(--size-4xl));
  font-weight: 700;
  color: var(--color-text-muted);
  line-height: 1.3;
  padding: var(--sp-8) 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  opacity: 0;
  transform: translateY(60px);
  transition: color 0.6s ease;
}

.pain__item.is-lit {
  color: var(--color-text);
}

.pain__item-mark {
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ec4899;
  box-shadow: 0 0 10px rgba(236, 72, 153, 0.7);
  opacity: 0;
  transform: scale(0);
  transition: opacity 0.4s ease 0.3s, transform 0.4s ease 0.3s;
  position: relative;
  top: -4px;
}

.pain__item.is-lit .pain__item-mark {
  opacity: 1;
  transform: scale(1);
}

/* ── 根本原因 ── */
.pain__verdict {
  width: 100%;
  padding-top: var(--sp-16);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.pain__verdict-lead {
  font-size: clamp(var(--size-lg), 2.5vw, var(--size-2xl));
  color: var(--color-text-muted);
  margin-bottom: var(--sp-4);
  opacity: 0;
  transform: translateY(20px);
}

.pain__verdict-em {
  font-size: clamp(var(--size-4xl), 6.5vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, #ec4899 0%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  transform: translateY(40px);
}

/* ============================================================
   9. SECTION: SOLUTION
   ============================================================ */
.sec-solution {
  position: relative;
  min-height: 100svh;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  overflow: hidden;
}

#solution-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.sec-solution__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--sp-6);
  padding: var(--section-py) var(--sp-6);
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
}

.solution__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  opacity: 0;
}

.solution__title {
  font-size: clamp(var(--size-3xl), 5vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.3;
}

.solution__desc {
  font-size: var(--size-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 52ch;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease 0.15s, transform 0.5s ease 0.15s;
}

.solution__desc.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── ヘッダー & ステッパー ── */
.solution__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
}

.solution__stepper {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  opacity: 0;
}

.solution__step {
  font-family: var(--font-en);
  font-size: var(--size-sm);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.2);
  letter-spacing: 0.1em;
  transition: color 0.4s ease;
}

.solution__step.is-active {
  color: var(--color-primary-2);
}

.solution__step-sep {
  color: rgba(255, 255, 255, 0.1);
  font-size: var(--size-xs);
}

/* ── フェーズ大表示ステージ ── */
.solution__phase-stage {
  position: relative;
  width: 100%;
  min-height: 260px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sol-phase-block {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
  text-align: center;
  opacity: 0;
  transform: translateY(48px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  will-change: opacity, transform;
}

.sol-phase-block.is-active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* 退場：別クラスで上へ消える */
.sol-phase-block.is-exit {
  opacity: 0;
  transform: translateY(-40px);
}

.sol-phase-block__num {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
}

.sol-phase-block__symbol {
  font-size: clamp(3rem, 8vw, 5rem);
  line-height: 1;
  color: var(--color-primary-2);
  filter: drop-shadow(0 0 20px rgba(157, 92, 246, 0.8));
}

.sol-phase-block__symbol--line {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  color: var(--color-accent);
  filter: drop-shadow(0 0 20px rgba(236, 72, 153, 0.8));
}

.sol-phase-block__symbol--mesh {
  font-size: clamp(3rem, 8vw, 5rem);
  color: #c49a2a;
  filter: drop-shadow(0 0 20px rgba(196, 154, 42, 0.9));
}

.sol-phase-block__name {
  font-size: clamp(var(--size-2xl), 4vw, var(--size-5xl));
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--color-text);
  line-height: 1.1;
}

.sol-phase-block__desc {
  font-size: clamp(var(--size-sm), 1.5vw, var(--size-base));
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 36ch;
}

/* ============================================================
   10. SECTION: ABOUT
   ============================================================ */
.sec-about {
  background: var(--color-bg-2);
  padding: var(--section-py) var(--sp-6);
}

.about__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-6);
  opacity: 0;
}

.about__title {
  font-size: clamp(var(--size-3xl), 5vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: var(--sp-8);
}

.about__lead {
  font-size: clamp(var(--size-base), 2vw, var(--size-xl));
  color: var(--color-text-muted);
  line-height: 1.9;
  max-width: 60ch;
  margin-bottom: var(--sp-12);
  opacity: 0;
  transform: translateY(20px);
}

.about__lead strong {
  color: var(--color-text);
  font-weight: 700;
}

/* 3つの特徴カード */
.about__features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
  margin-bottom: var(--sp-12);
}

.about__feature {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: var(--sp-8) var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  opacity: 0;
  transform: translateY(30px);
  transition: border-color var(--dur-normal) ease;
}

.about__feature:hover {
  border-color: rgba(124, 58, 237, 0.35);
}

.about__feature-icon {
  font-size: 2rem;
  line-height: 1;
}

.about__feature-title {
  font-size: var(--size-lg);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
}

.about__feature-desc {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.about__feature-desc strong {
  color: var(--color-text);
  font-weight: 600;
}

/* KENの意味 */
.about__ken {
  background: rgba(196, 154, 42, 0.06);
  border: 1px solid rgba(196, 154, 42, 0.25);
  border-radius: 12px;
  padding: var(--sp-6) var(--sp-8);
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
}

.about__ken-text {
  font-size: var(--size-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.about__ken-text em {
  font-style: normal;
  color: var(--color-text);
  font-weight: 600;
}

.about__ken-char {
  font-size: var(--size-3xl);
  font-weight: 900;
  color: #c49a2a;
  vertical-align: middle;
  margin-right: var(--sp-1);
}

.about__desc {
  font-size: var(--size-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 60ch;
  margin-bottom: var(--sp-8);
  opacity: 0;
}

.about__desc strong {
  color: var(--color-text);
}

.about__tags {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
  opacity: 0;
}

.tag {
  font-size: var(--size-sm);
  font-weight: 500;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.25);
  color: var(--color-primary-2);
  padding: var(--sp-1) var(--sp-3);
  border-radius: 100px;
}

/* ============================================================
   11. SECTION: ARCHITECT
   ============================================================ */
.sec-architect {
  min-height: 100svh;
  background: #040410;
  padding: var(--section-py) var(--sp-6);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.sec-architect::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.sec-architect__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--sp-8);
}

/* 上段2カラム：写真 + 自己紹介 */
.architect__top {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--sp-12);
  width: 100%;
  max-width: 900px;
}

.architect__intro {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: var(--sp-4);
}

/* Portrait */
.architect__portrait {
  opacity: 0;
  transform: translateY(30px);
}

.architect__portrait-frame {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(124, 58, 237, 0.35);
  box-shadow: var(--glow-primary);
  flex-shrink: 0;
}

.architect__portrait-img {
  width: 240px;
  height: 300px;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.architect__portrait-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 55%, rgba(124, 58, 237, 0.35) 100%);
  pointer-events: none;
}

.architect__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  opacity: 0;
}

.architect__name {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  opacity: 0;
}

.name-en {
  font-family: var(--font-en);
  font-size: clamp(var(--size-2xl), 4vw, var(--size-5xl));
  font-weight: 900;
  letter-spacing: 0.08em;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.name-jp {
  font-size: var(--size-xl);
  color: var(--color-text-muted);
  font-weight: 300;
  letter-spacing: 0.3em;
}

.architect__tagline {
  font-size: clamp(var(--size-lg), 2.5vw, var(--size-3xl));
  line-height: 1.6;
  opacity: 0;
}

/* Stats / Counters */
.architect__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--sp-6);
  width: 100%;
  max-width: 960px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: var(--sp-8) var(--sp-6);
  text-align: center;
  opacity: 0;
  transform: scale(0.9) translateY(60px);
  transition: border-color var(--dur-normal) ease, box-shadow var(--dur-normal) ease;
  overflow: hidden;
  position: relative;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-primary);
  opacity: 0;
  transition: opacity var(--dur-normal) ease;
}

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

.stat-card:hover {
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: 0 20px 60px rgba(124, 58, 237, 0.15);
}

.stat-card__number {
  display: flex;
  align-items: baseline;
  justify-content: center;
  flex-wrap: nowrap;
  gap: var(--sp-1);
  margin-bottom: var(--sp-3);
  line-height: 1;
  overflow: hidden;
}

.counter {
  font-family: var(--font-en);
  font-size: clamp(var(--size-4xl), 5vw, var(--size-6xl));
  font-weight: 900;
  background: var(--grad-glow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  line-height: 0.9;
}

.stat-prefix, .stat-suffix {
  font-family: var(--font-en);
  font-size: clamp(var(--size-base), 1.8vw, var(--size-2xl));
  font-weight: 700;
  color: var(--color-primary-2);
  white-space: nowrap;
}

.stat-card__label {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* Profile */
.architect__profile {
  max-width: 600px;
  width: 100%;
  opacity: 0;
  transform: translateY(30px);
}

.profile__items {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.profile__item {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--sp-4) var(--sp-6);
  font-size: var(--size-sm);
  text-align: left;
  color: var(--color-text-muted);
}

.profile__icon {
  font-size: var(--size-xl);
  flex-shrink: 0;
}

/* ============================================================
   12. SECTION: CURRICULUM
   ============================================================ */
/* ============================================================
   13. SECTION: CURRICULUM
   ============================================================ */
.sec-curriculum {
  position: relative;
  background: var(--color-bg);
  /* ブループリント方眼紙 */
  background-image:
    linear-gradient(rgba(124,58,237,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,58,237,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  padding: var(--section-py) var(--sp-6);
  overflow: hidden;
}

.sec-curriculum__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.curriculum__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-6);
  opacity: 0;
  transform: translateY(16px);
}

.curriculum__head {
  margin-bottom: var(--sp-20);
}

.curriculum__title {
  font-size: clamp(var(--size-3xl), 5vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: var(--sp-6);
}

.curriculum__subtitle {
  font-size: var(--size-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 56ch;
  opacity: 0;
  transform: translateY(20px);
}

.curriculum__subtitle strong {
  color: var(--color-text);
}

/* ── タイムライン ── */
.curriculum__timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  padding-left: 56px;
  margin-bottom: var(--sp-20);
}

/* 縦線 */
.curriculum__track {
  position: absolute;
  left: 20px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: rgba(255,255,255,0.07);
}

.curriculum__track-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: linear-gradient(180deg, #7c3aed 0%, #ec4899 50%, #c49a2a 100%);
}

/* ── ステップ共通 ── */
.curr-step {
  position: relative;
}

/* アクセントカラー定義 */
.curr-step[data-accent="purple"] { --accent: #7c3aed; --accent-glow: rgba(124,58,237,0.5); }
.curr-step[data-accent="blue"]   { --accent: #3b82f6; --accent-glow: rgba(59,130,246,0.5); }
.curr-step[data-accent="pink"]   { --accent: #ec4899; --accent-glow: rgba(236,72,153,0.5); }
.curr-step[data-accent="teal"]   { --accent: #14b8a6; --accent-glow: rgba(20,184,166,0.5); }
.curr-step[data-accent="gold"]   { --accent: #f59e0b; --accent-glow: rgba(245,158,11,0.5); }
.curr-step[data-accent="green"]  { --accent: #22c55e; --accent-glow: rgba(34,197,94,0.5); }

/* ノードドット */
.curr-step__dot {
  position: absolute;
  left: -44px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 14px var(--accent-glow);
  opacity: 0;
  transform: scale(0);
  z-index: 1;
}

/* カード */
.curr-step__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--accent);
  border-radius: 0 16px 16px 0;
  padding: var(--sp-6) var(--sp-8);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateX(-24px) rotateX(-8deg);
  transform-origin: left center;
  transition: box-shadow 0.3s ease;
  /* ブループリント角飾り */
}

.curr-step__card::before,
.curr-step__card::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  opacity: 0.25;
}
.curr-step__card::before {
  top: 10px;
  right: 16px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
}
.curr-step__card::after {
  bottom: 10px;
  right: 16px;
  border-bottom: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
}

.curr-step__card:hover {
  box-shadow: 0 8px 40px rgba(0,0,0,0.4), 0 0 24px var(--accent-glow);
}

/* ゴースト番号 */
.curr-step__num {
  font-family: var(--font-en);
  font-size: clamp(4rem, 8vw, 6rem);
  font-weight: 900;
  color: var(--accent);
  opacity: 0.07;
  line-height: 1;
  position: absolute;
  top: 8px;
  right: 24px;
  letter-spacing: -0.05em;
  pointer-events: none;
  user-select: none;
}

/* テーマ（ワーク名） */
.curr-step__theme {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}

/* タイトル */
.curr-step__title {
  font-size: clamp(var(--size-lg), 2.5vw, var(--size-2xl));
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: var(--sp-3);
  color: var(--color-text);
}

/* 説明文 */
.curr-step__desc {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--sp-4);
}

/* 完成設計図バッジ */
.curr-step__output {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: var(--sp-2) var(--sp-4);
  opacity: 0;
  transform: translateY(8px) scale(0.95);
}

.curr-step__output-label {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
}

.curr-step__output-name {
  font-size: var(--size-sm);
  font-weight: 700;
  color: var(--color-text);
}

/* ── フィナーレ ── */
.curriculum__finale {
  text-align: center;
  padding: var(--sp-12) var(--sp-6);
  border-top: 1px solid rgba(255,255,255,0.08);
  opacity: 0;
  transform: translateY(30px);
}

.curriculum__finale-lead {
  font-size: var(--size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--sp-4);
}

.curriculum__finale-em {
  font-size: clamp(var(--size-3xl), 5vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.2;
  background: linear-gradient(135deg, #a78bfa 0%, #ec4899 50%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   13. SECTION: SYSTEM
   ============================================================ */
/* ============================================================
   13. SECTION: SYSTEM
   ============================================================ */
.sec-system {
  position: relative;
  min-height: 100svh;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: var(--section-py) var(--sp-6);
}

/* 3D背景キャンバス（全デバイス共通） */
#system-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* 読みやすさのための暗幕グラデ */
.sec-system::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 50%,
    transparent 30%,
    rgba(6,6,26,0.6) 100%);
  pointer-events: none;
  z-index: 1;
}

.sec-system__inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--sp-6);
}

.system__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  opacity: 0;
}

.system__title {
  font-size: clamp(var(--size-3xl), 4.5vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.2;
}

.system__desc {
  font-size: var(--size-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 48ch;
  opacity: 0;
}

/* ── システムモジュール ── */
.system__modules {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--sp-4);
}

/* カラー定義 */
.sys-mod[data-tech="lp"]   { --mc: #a78bfa; --mb: rgba(124,58,237,0.18); }
.sys-mod[data-tech="line"] { --mc: #5eead4; --mb: rgba(20,184,166,0.18); }
.sys-mod[data-tech="ai"]   { --mc: #93c5fd; --mb: rgba(59,130,246,0.18); }
.sys-mod[data-tech="auto"] { --mc: #fcd34d; --mb: rgba(245,158,11,0.18); }

.sys-mod {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  padding: var(--sp-3) var(--sp-5);
  opacity: 0;
  transform: translateY(24px);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  backdrop-filter: blur(8px);
}

.sys-mod:hover {
  border-color: var(--mc);
  box-shadow: 0 0 24px color-mix(in srgb, var(--mc) 25%, transparent);
}

/* 技術ラベルバッジ */
.sys-mod__badge {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--mc);
  background: var(--mb);
  border: 1px solid color-mix(in srgb, var(--mc) 40%, transparent);
  border-radius: 6px;
  padding: 4px 10px;
  white-space: nowrap;
  flex-shrink: 0;
}

.sys-mod__body {
  text-align: left;
}

.sys-mod__name {
  font-size: var(--size-sm);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.sys-mod__role {
  font-size: var(--size-xs);
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* 結果モジュール */
.sys-mod--result {
  border-color: rgba(245,158,11,0.35);
  background: rgba(245,158,11,0.06);
  box-shadow: 0 0 20px rgba(245,158,11,0.12);
}

/* 矢印コネクタ */
.sys-mod__arr {
  font-size: var(--size-xl);
  font-weight: 300;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  flex-shrink: 0;
}

.sys-mod__arr--eq {
  font-size: var(--size-2xl);
}

/* ============================================================
   14. SECTION: FOR WHO
   ============================================================ */
.sec-forwho {
  background: #050510;
  padding: var(--section-py) var(--sp-6);
  position: relative;
  overflow: hidden;
}

.sec-forwho::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% 40%, rgba(124, 58, 237, 0.10) 0%, transparent 65%),
    radial-gradient(ellipse 40% 30% at 80% 80%, rgba(236, 72, 153, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.sec-forwho__inner {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.forwho__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-6);
  opacity: 0;
}

.forwho__title {
  font-size: clamp(var(--size-3xl), 5vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: clamp(var(--sp-12), 5vw, var(--sp-20));
}

/* ── List ─────────────────────────────────────────────────── */
.forwho__list {
  display: flex;
  flex-direction: column;
}

.forwho__item {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  padding: clamp(var(--sp-5), 3vw, var(--sp-8)) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
  opacity: 0;
  transform: translateX(-48px);
  transition: none;
}

.forwho__item::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 20%;
  bottom: 20%;
  width: 2px;
  background: linear-gradient(180deg, #7c3aed, #ec4899);
  opacity: 0;
  transform: scaleY(0);
  transform-origin: top;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.forwho__item.is-lit::before {
  opacity: 1;
  transform: scaleY(1);
}

.forwho__num {
  font-family: var(--font-en);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1;
  flex-shrink: 0;
  min-width: clamp(3.5rem, 6vw, 5.5rem);
  background: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.30;
  transition: opacity 0.5s ease;
}

.forwho__item.is-lit .forwho__num {
  opacity: 1;
}

.forwho__body {
  flex: 1;
}

.forwho__text {
  font-size: clamp(var(--size-base), 2.2vw, var(--size-xl));
  color: rgba(255, 255, 255, 0.50);
  line-height: 1.75;
  transition: color 0.5s ease;
}

.forwho__item.is-lit .forwho__text {
  color: rgba(255, 255, 255, 0.80);
}

.forwho__text strong {
  color: var(--color-text);
  font-weight: 700;
  display: block;
}

/* ── Closing statement ────────────────────────────────────── */
.forwho__close {
  margin-top: clamp(var(--sp-12), 6vw, var(--sp-20));
  text-align: center;
  opacity: 0;
  transform: translateY(32px);
}

.forwho__close-text {
  font-size: clamp(var(--size-xl), 3.5vw, var(--size-3xl));
  font-weight: 900;
  line-height: 1.6;
}

/* ── Mobile: 縦積みカードレイアウト ──────────────────────── */
@media (max-width: 600px) {
  .forwho__list {
    gap: var(--sp-3);
  }

  .forwho__item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-2);
    padding: var(--sp-5) var(--sp-4);
    border-bottom: none;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transform: translateX(-32px);
    transition: background 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease;
  }

  .forwho__item.is-lit {
    background: rgba(124, 58, 237, 0.07);
    border-color: rgba(124, 58, 237, 0.25);
    box-shadow: 0 4px 24px rgba(124, 58, 237, 0.10);
  }

  .forwho__item::before {
    display: none;
  }

  .forwho__num {
    font-size: 0.7rem;
    min-width: unset;
    letter-spacing: 0.15em;
    opacity: 0.5;
  }

  .forwho__item.is-lit .forwho__num {
    opacity: 1;
  }

  .forwho__body {
    width: 100%;
  }

  .forwho__text {
    font-size: var(--size-sm);
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.45);
  }

  .forwho__item.is-lit .forwho__text {
    color: rgba(255, 255, 255, 0.70);
  }

  .forwho__text strong {
    display: inline;
    font-size: var(--size-base);
    color: var(--color-text);
    font-weight: 800;
  }

  .forwho__close-text {
    font-size: var(--size-lg);
  }
}

/* ============================================================
   15. SECTION: ECOSYSTEM
   ============================================================ */
.sec-ecosystem {
  min-height: 100svh;
  background: #040410;
  padding: var(--section-py) var(--sp-6);
  display: flex;
  align-items: center;
  position: relative;
}

.sec-ecosystem::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(236, 72, 153, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.sec-ecosystem__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--sp-8);
}

.ecosystem__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  opacity: 0;
}

.ecosystem__title {
  font-size: clamp(var(--size-4xl), 7vw, var(--size-8xl));
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.ecosystem__desc {
  font-size: var(--size-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.8;
  opacity: 0;
}

.ecosystem__desc strong { color: var(--color-text); }

.ecosystem__quote {
  max-width: 600px;
  opacity: 0;
}

.ecosystem__quote blockquote {
  font-size: var(--size-lg);
  color: var(--color-text-muted);
  font-style: italic;
  line-height: 1.8;
  border-left: 3px solid var(--color-primary);
  padding-left: var(--sp-6);
  text-align: left;
}

.ecosystem__quote cite {
  display: block;
  margin-top: var(--sp-4);
  font-size: var(--size-sm);
  color: var(--color-primary-2);
  font-style: normal;
  text-align: right;
}

/* Ecosystem model */
.ecosystem__model {
  position: relative;
  width: min(420px, 90vw);
  height: min(420px, 90vw);
  margin: var(--sp-8) auto 0;
  opacity: 0;
}

.model__center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: var(--grad-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-weight: 900;
  font-size: var(--size-xl);
  box-shadow: var(--glow-primary);
  z-index: 2;
  animation: coreGlow 3s ease-in-out infinite;
}

@keyframes coreGlow {
  0%, 100% { box-shadow: var(--glow-primary); transform: translate(-50%, -50%) scale(1); }
  50%       { box-shadow: 0 0 60px rgba(124,58,237,0.7), 0 0 120px rgba(124,58,237,0.3); transform: translate(-50%, -50%) scale(1.05); }
}

.model__rings { position: absolute; inset: 0; }

.model__ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px solid rgba(124, 58, 237, 0.2);
  transform: translate(-50%, -50%);
  animation: ringPulse 6s ease-in-out infinite;
}

.model__ring--1 { width: 140px; height: 140px; animation-delay: 0s; }
.model__ring--2 { width: 240px; height: 240px; animation-delay: 1s; border-color: rgba(236, 72, 153, 0.15); }
.model__ring--3 { width: 340px; height: 340px; animation-delay: 2s; border-color: rgba(245, 158, 11, 0.1); }

@keyframes ringPulse {
  0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
  50%       { opacity: 1;   transform: translate(-50%, -50%) scale(1.03); }
}

.model__nodes { position: absolute; inset: 0; }

.model__node {
  position: absolute;
  top: 50%;
  left: 50%;
  font-size: var(--size-xs);
  font-weight: 700;
  color: var(--color-primary-2);
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.3);
  padding: var(--sp-1) var(--sp-2);
  border-radius: 100px;
  white-space: nowrap;
  transform:
    translate(-50%, -50%)
    rotate(var(--angle))
    translateX(155px)
    rotate(calc(-1 * var(--angle)));
  animation: nodePulse 4s ease-in-out infinite;
}

@keyframes nodePulse {
  0%, 100% { opacity: 0.7; }
  50%       { opacity: 1; }
}

/* ============================================================
   16. SECTION: VOICES
   ============================================================ */
.sec-voices {
  background: var(--color-bg);
  padding: var(--section-py) 0 var(--section-py) var(--sp-6);
  overflow: hidden;
}

.sec-voices__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-right: var(--sp-6);
}

.voices__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-6);
  opacity: 0;
}

.voices__title {
  font-size: clamp(var(--size-3xl), 5vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: var(--sp-12);
}

.voices__track-wrap {
  overflow: hidden;
  padding: var(--sp-8) 0;
  cursor: grab;
  user-select: none;
  touch-action: pan-y;
  /* 両端フェード */
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 7%,
    black 93%,
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 7%,
    black 93%,
    transparent 100%
  );
}

.voices__track-wrap.is-dragging {
  cursor: grabbing;
}

.voices__track {
  display: flex;
  gap: var(--sp-6);
  width: max-content;
  will-change: transform;
}

.voice-card {
  width: 400px;
  flex-shrink: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  transition: border-color var(--dur-normal) ease,
              box-shadow var(--dur-normal) ease;
}

.voice-card:hover {
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: 0 16px 48px rgba(124, 58, 237, 0.1);
}

.voice-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  padding: var(--sp-1) var(--sp-3);
  border-radius: 100px;
  margin-bottom: var(--sp-2);
}

.voice-tag--before {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.voice-tag--after {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.voice-card__before p,
.voice-card__after p {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.voice-card__after strong { color: var(--color-text); }

.voice-card__arrow {
  text-align: center;
  font-size: var(--size-2xl);
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.voice-card__profile {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  border-top: 1px solid var(--color-border);
  padding-top: var(--sp-4);
  margin-top: auto;
}

.voice-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--grad-primary);
  opacity: 0.75;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

/* 頭 */
.voice-card__avatar::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.90);
}

/* 体 */
.voice-card__avatar::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 16px;
  border-radius: 13px 13px 0 0;
  background: rgba(255, 255, 255, 0.90);
}

.voice-card__name {
  font-size: var(--size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--sp-1);
}

.voice-card__stars {
  color: var(--color-gold);
  font-size: var(--size-sm);
}

/* ============================================================
   17. SECTION: OFFER
   ============================================================ */
.sec-offer {
  background: #030310;
  padding: var(--section-py) var(--sp-6);
  position: relative;
  overflow: hidden;
  min-height: 100svh;
}

#offer-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.sec-offer__inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.offer__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-6);
  opacity: 0;
}

.offer__title {
  font-size: clamp(var(--size-3xl), 5vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: var(--sp-4);
}

.offer__subtitle {
  font-size: var(--size-base);
  color: var(--color-text-muted);
  margin-bottom: clamp(var(--sp-16), 8vw, var(--sp-24));
  opacity: 0;
  transform: translateY(16px);
}

/* ── Bonus list ─────────────────────────────────────────── */
.offer__bonuses {
  display: flex;
  flex-direction: column;
  margin-bottom: clamp(var(--sp-16), 8vw, var(--sp-24));
}

/* Per-bonus accent colors */
.offer__bonus[data-accent="purple"] { --ac: #7c3aed; --ac-glow: rgba(124,58,237,0.15); }
.offer__bonus[data-accent="indigo"] { --ac: #6366f1; --ac-glow: rgba(99,102,241,0.15); }
.offer__bonus[data-accent="teal"]   { --ac: #0d9488; --ac-glow: rgba(13,148,136,0.15); }
.offer__bonus[data-accent="amber"]  { --ac: #f59e0b; --ac-glow: rgba(245,158,11,0.15); }
.offer__bonus[data-accent="gold"]   { --ac: #eab308; --ac-glow: rgba(234,179,8,0.20); }

.offer__bonus {
  display: flex;
  gap: var(--sp-8);
  padding: clamp(var(--sp-8), 4vw, var(--sp-12)) 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  opacity: 0;
  transform: translateY(56px);
  position: relative;
}

.offer__bonus--final {
  border-bottom: none;
}

/* ── Left column: number + vertical line ── */
.offer__bonus-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  gap: var(--sp-3);
}

.offer__bonus-num {
  font-family: var(--font-en);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--ac), color-mix(in srgb, var(--ac) 60%, white));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
  min-width: clamp(3rem, 4vw, 4.5rem);
  text-align: center;
}

.offer__bonus-line {
  width: 1px;
  flex: 1;
  min-height: 40px;
  background: linear-gradient(180deg, var(--ac), transparent);
  opacity: 0.3;
}

/* ── Right column: content ── */
.offer__bonus-body {
  flex: 1;
  padding-top: var(--sp-1);
}

.offer__bonus-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ac);
  border: 1px solid var(--ac);
  border-radius: 100px;
  padding: 2px 10px;
  margin-bottom: var(--sp-3);
}

.offer__bonus-name {
  font-size: clamp(var(--size-lg), 2.5vw, var(--size-2xl));
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: var(--sp-3);
}

.offer__bonus-desc {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: var(--sp-5);
  max-width: 600px;
}

.offer__bonus-value {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  background: var(--ac-glow);
  border: 1px solid var(--ac);
  border-radius: 8px;
  padding: var(--sp-2) var(--sp-4);
}

.offer__bonus-yen {
  font-family: var(--font-en);
  font-size: var(--size-base);
  font-weight: 700;
  color: var(--ac);
}

.offer__bonus-amount {
  font-family: var(--font-en);
  font-size: var(--size-2xl);
  font-weight: 900;
  color: var(--ac);
  letter-spacing: -0.02em;
}

.offer__bonus-unit {
  font-size: var(--size-xs);
  color: var(--ac);
  opacity: 0.7;
}

/* ── Special highlight on final bonus ── */
.offer__bonus--final {
  background: linear-gradient(135deg, rgba(234,179,8,0.04) 0%, transparent 60%);
  border-radius: 16px;
  padding-left: var(--sp-5);
  padding-right: var(--sp-5);
  border: 1px solid rgba(234,179,8,0.15);
  box-shadow: 0 0 40px rgba(234,179,8,0.05);
}

/* ── Price section ──────────────────────────────────────── */
.price__section {
  max-width: 600px;
  text-align: center;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(40px);
}

.price__total {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}

.price__total-label {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
}

.price__total-value {
  font-family: var(--font-en);
  font-size: var(--size-4xl);
  font-weight: 900;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price__total-unit {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
}

.price__arrow {
  font-size: var(--size-3xl);
  margin: var(--sp-2) 0;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price__main {
  background: rgba(124, 58, 237, 0.06);
  border: 2px solid rgba(124, 58, 237, 0.3);
  border-radius: 20px;
  padding: var(--sp-8) var(--sp-8);
  margin-bottom: var(--sp-8);
}

.price__trial {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--sp-3);
}

.price__trial strong { color: var(--color-text); }

.price__amount {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--sp-1);
  margin-bottom: var(--sp-3);
}

.price__currency {
  font-family: var(--font-en);
  font-size: var(--size-4xl);
  font-weight: 900;
  color: var(--color-text);
}

.price__number {
  font-family: var(--font-en);
  font-size: clamp(var(--size-5xl), 9vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price__period {
  font-size: var(--size-base);
  color: var(--color-text-muted);
}

.price__note {
  font-size: var(--size-xs);
  color: var(--color-text-muted);
}

.offer__urgency {
  margin-top: var(--sp-6);
  font-size: var(--size-sm);
  color: var(--color-warning);
  opacity: 0;
  transform: translateY(10px);
}

/* ── Mobile ─────────────────────────────────────────────── */
@media (max-width: 600px) {
  .offer__bonus {
    gap: var(--sp-5);
  }

  .offer__bonus-line {
    min-height: 24px;
  }

  .offer__bonus--final {
    padding-left: var(--sp-3);
    padding-right: var(--sp-3);
  }
}

/* ============================================================
   18. SECTION: FAQ
   ============================================================ */
.sec-faq {
  background: #060612;
  padding: var(--section-py) var(--sp-6);
  position: relative;
  overflow: hidden;
}

.sec-faq::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 30%, rgba(99, 102, 241, 0.08) 0%, transparent 65%);
  pointer-events: none;
}

.sec-faq__inner {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.faq__label {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-6);
  opacity: 0;
}

.faq__title {
  font-size: clamp(var(--size-3xl), 5vw, var(--size-6xl));
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: var(--sp-4);
  opacity: 0;
}

.faq__subtitle {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--sp-12);
  opacity: 0;
  transform: translateY(16px);
}

.faq__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

/* ── Category colors ────────────────────────────────────── */
.faq__item[data-category="it"]        { --cat: #6366f1; --cat-bg: rgba(99, 102, 241, 0.07); }
.faq__item[data-category="cost"]      { --cat: #f59e0b; --cat-bg: rgba(245, 158, 11, 0.07); }
.faq__item[data-category="cancel"]    { --cat: #10b981; --cat-bg: rgba(16, 185, 129, 0.07); }
.faq__item[data-category="bonus"]     { --cat: #ec4899; --cat-bg: rgba(236, 72, 153, 0.07); }
.faq__item[data-category="lifestyle"] { --cat: #7c3aed; --cat-bg: rgba(124, 58, 237, 0.07); }

.faq__item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-left: 3px solid transparent;
  border-radius: 16px;
  opacity: 0;
  transform: translateY(24px);
  transition:
    border-color var(--dur-normal) ease,
    background var(--dur-normal) ease,
    box-shadow var(--dur-normal) ease;
}

.faq__item:hover {
  border-color: var(--cat);
  border-left-color: var(--cat);
  background: var(--cat-bg);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.faq__item[open] {
  border-color: var(--cat);
  border-left-color: var(--cat);
  background: var(--cat-bg);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

/* ── Question row ───────────────────────────────────────── */
.faq__question {
  padding: var(--sp-5) var(--sp-6);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-4);
  list-style: none;
}

.faq__question::-webkit-details-marker { display: none; }

.faq__q-inner {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  flex: 1;
}

.faq__cat {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cat);
  line-height: 1;
}

.faq__q-text {
  font-size: clamp(var(--size-sm), 2vw, var(--size-base));
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

/* ── Toggle icon ────────────────────────────────────────── */
.faq__icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  flex-shrink: 0;
  position: relative;
  transition: border-color var(--dur-normal) ease, background var(--dur-normal) ease;
}

.faq__icon::before,
.faq__icon::after {
  content: '';
  position: absolute;
  background: var(--color-text-muted);
  border-radius: 2px;
  transition: transform var(--dur-normal) ease, opacity var(--dur-normal) ease, background var(--dur-normal) ease;
}

.faq__icon::before {
  width: 12px; height: 1.5px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

.faq__icon::after {
  width: 1.5px; height: 12px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

.faq__item[open] .faq__icon {
  border-color: var(--cat);
  background: var(--cat-bg);
}

.faq__item[open] .faq__icon::before,
.faq__item[open] .faq__icon::after {
  background: var(--cat);
}

.faq__item[open] .faq__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

/* ── Answer ─────────────────────────────────────────────── */
.faq__answer {
  padding: 0 var(--sp-6) var(--sp-6);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.faq__reassure {
  font-size: var(--size-base);
  font-weight: 700;
  color: var(--cat);
  margin: var(--sp-4) 0 var(--sp-3);
  line-height: 1.5;
}

.faq__answer p {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  line-height: 1.9;
}

/* ============================================================
   19. SECTION: FINAL CTA
   ============================================================ */
.sec-final-cta {
  min-height: 80svh;
  background: #040410;
  display: flex;
  align-items: center;
  text-align: center;
  padding: var(--section-py) var(--sp-6);
  position: relative;
  overflow: hidden;
}

.sec-final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 60%, rgba(124, 58, 237, 0.12) 0%, transparent 65%);
  pointer-events: none;
}

.sec-final-cta__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-8);
}

.final-cta__title {
  font-size: clamp(var(--size-4xl), 8vw, var(--size-8xl));
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.final-cta__desc {
  font-size: clamp(var(--size-base), 2vw, var(--size-xl));
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 50ch;
  opacity: 0;
}

.final-cta__desc strong { color: var(--color-text); }

.final-cta__note {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  opacity: 0;
}

/* ============================================================
   20. FOOTER
   ============================================================ */
.site-footer {
  background: #02020c;
  padding: var(--sp-16) var(--sp-6);
  border-top: 1px solid var(--color-border);
}

.site-footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
  text-align: center;
}

.footer__logo {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  font-weight: 700;
}

.footer__tagline {
  font-family: var(--font-en);
  font-size: var(--size-xs);
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
}

.footer__links {
  display: flex;
  gap: var(--sp-6);
  flex-wrap: wrap;
  justify-content: center;
}

.footer__links a {
  font-size: var(--size-xs);
  color: var(--color-text-muted);
  transition: color var(--dur-fast) ease;
}

.footer__links a:hover { color: var(--color-text); }

.footer__copy small {
  font-size: var(--size-xs);
  color: rgba(241, 245, 249, 0.25);
}

/* ============================================================
   21. RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .about__features {
    grid-template-columns: 1fr;
  }
  .system__modules {
    gap: var(--sp-2);
  }
  .sys-mod__arr {
    transform: rotate(90deg);
  }
  .navbar__links {
    display: none;
  }
  .bonus__card {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
  }
  .bonus__value {
    grid-column: 2;
  }
}

@media (max-width: 640px) {
  :root {
    --section-py: 5rem;
  }
  .hero__cta-group {
    flex-direction: column;
    width: 100%;
  }
  .btn--primary, .btn--ghost {
    width: 100%;
    justify-content: center;
  }
  .architect__top {
    grid-template-columns: 1fr;
    justify-items: center;
  }
  .architect__intro {
    align-items: center;
    text-align: center;
  }
  .architect__stats {
    grid-template-columns: 1fr;
  }
  .solution__flow {
    flex-direction: column;
  }
  .flow__connector {
    transform: rotate(90deg);
    min-width: 40px;
    max-width: 60px;
  }
  .bonus__card {
    grid-template-columns: 1fr;
  }
  .voices__track-wrap {
    padding-left: var(--sp-6);
  }
}