/* ============================================
   AI Solutions - style.css
   Blue / Black / Purple · Glassmorphism · Futuristic
   ============================================ */

/* --- TOKENS --- */
:root {
  --c-bg:        #05060f;
  --c-bg2:       #0a0d1a;
  --c-surface:   rgba(255,255,255,0.04);
  --c-border:    rgba(255,255,255,0.08);
  --c-blue:      #4f8ef7;
  --c-blue-dark: #1a3a7a;
  --c-purple:    #9b59f5;
  --c-purple2:   #c084fc;
  --c-accent:    #00e5ff;
  --c-text:      #e8eaf2;
  --c-text-sub:  #8890aa;
  --c-white:     #ffffff;

  --grad-primary: linear-gradient(135deg, var(--c-blue) 0%, var(--c-purple) 100%);
  --grad-glow:    linear-gradient(135deg, #1a3a7a 0%, #2d1b6e 100%);

  --glass-bg:     rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.10);
  --glass-blur:   blur(16px);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Noto Sans JP', sans-serif;

  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* --- RESET --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- UTILITIES --- */
.container {
  width: min(1200px, 92vw);
  margin-inline: auto;
}
.section { padding: 100px 0; }
.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- GLASS CARD --- */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 0 24px rgba(79,142,247,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(79,142,247,0.55);
}
.btn-glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  color: var(--c-text);
}
.btn-glass:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--c-blue);
  color: #fff;
  transform: translateY(-2px);
}
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }
.btn-full { width: 100%; justify-content: center; }

/* --- SECTION HEADER --- */
.section-header { text-align: center; margin-bottom: 60px; }
.section-eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--c-blue);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 16px;
}
.section-sub { color: var(--c-text-sub); font-size: 1rem; }

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: var(--transition);
}
.header.scrolled {
  background: rgba(5,6,15,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
}
.logo-icon { font-size: 1.6rem; }
.logo-accent { color: var(--c-blue); }
.nav { display: flex; align-items: center; gap: 8px; }
.nav-link {
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.9rem;
  color: var(--c-text-sub);
  transition: var(--transition);
}
.nav-link:hover { color: #fff; background: var(--glass-bg); }
.nav-btn {
  padding: 10px 22px;
  border-radius: 50px;
  background: var(--grad-primary);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 0 20px rgba(79,142,247,0.3);
}
.nav-btn:hover { transform: translateY(-1px); box-shadow: 0 0 32px rgba(79,142,247,0.5); }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
  animation: orbFloat 8s ease-in-out infinite;
}
.orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #4f8ef7, transparent);
  top: -100px; left: -100px;
  animation-delay: 0s;
}
.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #9b59f5, transparent);
  top: 50%; right: -80px;
  animation-delay: 3s;
}
.orb-3 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, #00e5ff, transparent);
  bottom: -80px; left: 40%;
  animation-delay: 5s;
}
@keyframes orbFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-30px) scale(1.05); }
}
#particles {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 120px;
  padding-bottom: 60px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--c-text-sub);
  margin-bottom: 28px;
  backdrop-filter: var(--glass-blur);
  animation: fadeInUp 0.8s ease both;
}
.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px #22c55e; }
  50%       { opacity: 0.6; box-shadow: 0 0 16px #22c55e; }
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 5rem);
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s 0.1s ease both;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--c-text-sub);
  margin-bottom: 40px;
  animation: fadeInUp 0.8s 0.2s ease both;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
  animation: fadeInUp 0.8s 0.3s ease both;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s 0.4s ease both;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--c-text-sub);
  margin-top: 4px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--glass-border);
}
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
}
.scroll-line {
  width: 2px;
  height: 48px;
  background: linear-gradient(to bottom, var(--c-blue), transparent);
  margin: 0 auto;
  animation: scrollAnim 2s ease-in-out infinite;
}
@keyframes scrollAnim {
  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; }
}

/* ============================================
   PHILOSOPHY
   ============================================ */
.philosophy { padding: 60px 0; }
.philosophy-inner {
  padding: 48px;
  text-align: center;
  border-color: rgba(79,142,247,0.2);
}
.philosophy-icon { font-size: 2.5rem; margin-bottom: 16px; }
.philosophy-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}
.philosophy-body {
  color: var(--c-text-sub);
  font-size: 1rem;
  line-height: 2;
  max-width: 680px;
  margin: 0 auto;
}

/* ============================================
   SERVICES
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.service-card {
  padding: 32px;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: var(--grad-primary);
  opacity: 0;
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79,142,247,0.3);
  box-shadow: 0 16px 48px rgba(79,142,247,0.12);
}
.service-card:hover::before { opacity: 0.03; }
.service-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  position: relative;
}
.service-status {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 50px;
  margin-bottom: 12px;
}
.status-active {
  background: rgba(34,197,94,0.15);
  color: #22c55e;
  border: 1px solid rgba(34,197,94,0.3);
}
.status-coming {
  background: rgba(251,191,36,0.12);
  color: #fbbf24;
  border: 1px solid rgba(251,191,36,0.3);
}
.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
  position: relative;
}
.service-card p {
  font-size: 0.88rem;
  color: var(--c-text-sub);
  line-height: 1.7;
  position: relative;
}
.service-card.coming { opacity: 0.75; }

/* ============================================
   TOOLS
   ============================================ */
.tools { background: var(--c-bg2); }
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}
.tool-card {
  padding: 32px;
  position: relative;
  transition: var(--transition);
}
.tool-card:hover {
  transform: translateY(-4px);
  border-color: rgba(155,89,245,0.3);
  box-shadow: 0 16px 48px rgba(155,89,245,0.12);
}
.tool-badge {
  position: absolute;
  top: 20px; right: 20px;
  background: var(--grad-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  letter-spacing: 0.05em;
}
.tool-icon { font-size: 2.4rem; margin-bottom: 16px; }
.tool-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}
.tool-desc {
  font-size: 0.88rem;
  color: var(--c-text-sub);
  margin-bottom: 16px;
  line-height: 1.7;
}
.tool-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 50px;
  background: rgba(79,142,247,0.12);
  border: 1px solid rgba(79,142,247,0.25);
  color: var(--c-blue);
}
.tool-price {
  margin: 14px 0 18px;
  padding: 14px 16px;
  background: rgba(251,191,36,0.05);
  border: 1px solid rgba(251,191,36,0.2);
  border-radius: var(--radius-sm);
}
.price-original {
  font-size: 0.8rem;
  color: var(--c-text-sub);
  margin-bottom: 6px;
}
.price-original s { text-decoration-color: rgba(136,144,170,0.6); }
.price-sale {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}
.price-sale .price-amount {
  font-size: 1.35rem;
  color: #fbbf24;
}
.price-note {
  font-size: 0.72rem;
  color: var(--c-text-sub);
  opacity: 0.75;
}

.fav-btn {
  position: absolute;
  top: 16px;
  left: 16px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  color: var(--c-text-sub);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition);
  z-index: 2;
}
.fav-btn:hover { border-color: #f87171; color: #f87171; transform: scale(1.08); }
.fav-btn.active { color: #f87171; border-color: rgba(248,113,113,0.4); background: rgba(248,113,113,0.12); }

.other-tools-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  user-select: none;
}
.other-tools-toggle .tool-icon {
  transition: transform 0.35s ease;
}
.other-tools-toggle:hover .tool-icon {
  transform: rotate(90deg);
}
.other-tools-arrow {
  font-size: 0.9rem;
  color: var(--c-text-sub);
  transition: transform 0.35s ease;
}
.other-tools-toggle:hover .other-tools-arrow {
  transform: translateX(4px);
}
.tools-note { text-align: center; }
.note-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  font-size: 0.9rem;
  color: var(--c-text-sub);
  transition: var(--transition);
}
.note-link:hover {
  color: #fff;
  border-color: var(--c-blue);
  background: rgba(79,142,247,0.08);
}

/* ============================================
   CONSULTATION
   ============================================ */
.consult-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding: 48px;
  align-items: center;
}
.consult-text .section-title { margin-bottom: 16px; }
.consult-text p { color: var(--c-text-sub); margin-bottom: 24px; }
.consult-list {
  list-style: none;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.consult-list li { font-size: 0.95rem; color: var(--c-text); }
.consult-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.chat-bubble {
  padding: 16px 20px;
  font-size: 0.9rem;
  color: var(--c-text-sub);
  border-radius: var(--radius-md);
  transform: translateX(20px);
  opacity: 0;
  transition: var(--transition);
}
.chat-bubble.visible { transform: translateX(0); opacity: 1; }
.cb-1 { transition-delay: 0.1s; }
.cb-2 { transition-delay: 0.3s; }
.cb-3 { transition-delay: 0.5s; }

/* ============================================
   BLOG
   ============================================ */
.blog { background: var(--c-bg2); }
.blog-categories {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}
.cat-btn {
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  border: 1px solid var(--glass-border);
  color: var(--c-text-sub);
  transition: var(--transition);
}
.cat-btn:hover, .cat-btn.active {
  background: var(--grad-primary);
  color: #fff;
  border-color: transparent;
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.blog-card {
  padding: 28px;
  transition: var(--transition);
}
.blog-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79,142,247,0.3);
}
.blog-cat-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 50px;
  background: rgba(79,142,247,0.12);
  color: var(--c-blue);
  border: 1px solid rgba(79,142,247,0.25);
  margin-bottom: 12px;
}
.blog-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.5;
}
.blog-card p {
  font-size: 0.875rem;
  color: var(--c-text-sub);
  margin-bottom: 20px;
  line-height: 1.7;
}
.blog-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--c-text-sub);
}
.read-more {
  color: var(--c-blue);
  transition: var(--transition);
}
.read-more:hover { color: var(--c-purple2); }

/* ============================================
   ROADMAP
   ============================================ */
.roadmap-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}
.roadmap-list::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-blue), var(--c-purple), transparent);
}
.roadmap-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 28px 28px 28px 20px;
  transition: var(--transition);
}
.roadmap-item:hover { border-color: rgba(79,142,247,0.3); }
.roadmap-dot {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 3px solid var(--c-text-sub);
  flex-shrink: 0;
  margin-top: 4px;
  position: relative;
  z-index: 1;
  transition: var(--transition);
}
.roadmap-item.done .roadmap-dot {
  border-color: #22c55e;
  background: #22c55e;
  box-shadow: 0 0 12px rgba(34,197,94,0.5);
}
.roadmap-item.current .roadmap-dot {
  border-color: var(--c-blue);
  background: var(--c-blue);
  box-shadow: 0 0 16px rgba(79,142,247,0.6);
  animation: pulse 2s ease-in-out infinite;
}
.roadmap-phase {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-blue);
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.roadmap-content h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 6px;
}
.roadmap-content p {
  font-size: 0.875rem;
  color: var(--c-text-sub);
}

/* ============================================
   CONTACT
   ============================================ */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-form {
  padding: 40px;
}
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block;
  font-size: 0.88rem;
  color: var(--c-text-sub);
  margin-bottom: 8px;
  font-weight: 500;
}
.required { color: #f87171; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(136,144,170,0.5); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--c-blue);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.12);
  background: rgba(255,255,255,0.07);
}
.form-group select option { background: #0a0d1a; color: var(--c-text); }
.form-group textarea { resize: vertical; }
.form-note {
  text-align: center;
  font-size: 0.78rem;
  color: var(--c-text-sub);
  margin-top: 16px;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
}
.contact-icon { font-size: 1.5rem; }
.contact-label { font-size: 0.78rem; color: var(--c-text-sub); margin-bottom: 4px; }
.contact-value { font-size: 0.95rem; color: #fff; transition: var(--transition); }
.contact-value:hover { color: var(--c-blue); }
.contact-sns { padding: 20px 0; }
.sns-links { display: flex; gap: 12px; margin-top: 12px; }
.sns-btn {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  color: var(--c-text-sub);
  transition: var(--transition);
}
.sns-btn:hover {
  color: #fff;
  border-color: var(--c-blue);
  background: rgba(79,142,247,0.1);
  transform: translateY(-2px);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--c-bg2);
  border-top: 1px solid var(--glass-border);
  padding-top: 64px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 60px;
  padding-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 0.875rem;
  color: var(--c-text-sub);
  margin-bottom: 24px;
  max-width: 280px;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}
.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: var(--c-text-sub);
  padding: 4px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--c-blue); }
.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p { font-size: 0.8rem; color: var(--c-text-sub); }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .consult-inner { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
  .footer-inner  { grid-template-columns: 1fr; gap: 40px; }
  .footer-links  { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav { 
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(5,6,15,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 24px;
    z-index: 99;
  }
  .nav.open { display: flex; }
  .nav-link { font-size: 1.2rem; color: var(--c-text); }
  .hamburger { display: flex; z-index: 101; }
  .hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .hamburger.open span:nth-child(2) { opacity: 0; }
  .hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero-title { font-size: clamp(2rem, 8vw, 3rem); }
  .hero-stats { gap: 20px; }
  .philosophy-inner { padding: 32px 24px; }
  .services-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .roadmap-list::before { left: 22px; }
  .contact-form { padding: 28px 20px; }
  .footer-links { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn { justify-content: center; }
  .consult-inner { padding: 28px 20px; }
}

/* スクロールバー */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb { background: var(--c-blue-dark); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-blue); }