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

:root {
  --bg:       #0a0a0a;
  --bg2:      #141414;
  --bg3:      #1c1c1c;
  --text:     #f0f0f0;
  --muted:    #888;
  --accent:   #c49a4a;
  --accent2:  #e0b96a;
  --white:    #ffffff;
  --radius:   4px;
  --max-w:    1100px;
  --trans:    0.3s ease;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }

.label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
  display: block;
}

.title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
}

.sub {
  font-size: 16px;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: var(--radius);
  transition: var(--trans);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}
.btn-primary:hover { background: var(--accent2); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid #333;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--trans);
}
.nav.scrolled {
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #1e1e1e;
}
.nav-logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}
.nav-links a {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: var(--trans);
}
.nav-links a:hover { color: var(--text); }

.nav-cta {
  padding: 8px 20px;
  background: var(--accent);
  color: #000;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius);
  transition: var(--trans);
}
.nav-cta:hover { background: var(--accent2); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: var(--trans);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 64px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 70% 50%, rgba(196,154,74,0.08) 0%, transparent 60%),
    linear-gradient(180deg, #0a0a0a 0%, #111 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(196,154,74,0.12);
  border: 1px solid rgba(196,154,74,0.3);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 32px;
}

.hero-title {
  font-size: clamp(36px, 6vw, 68px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.hero-title .accent { color: var(--accent); }

.hero-sub {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.85;
  margin-bottom: 40px;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 72px;
  padding-top: 48px;
  border-top: 1px solid #1e1e1e;
}

.stat-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.stat-label {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
  letter-spacing: 0.05em;
}

/* ===== STRENGTHS ===== */
.strengths { background: var(--bg2); }

.strengths-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2px;
  margin-top: 64px;
}

.strength-card {
  background: var(--bg3);
  padding: 40px 32px;
  transition: var(--trans);
  position: relative;
  overflow: hidden;
}
.strength-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: var(--trans);
}
.strength-card:hover::before { transform: scaleX(1); }

.strength-num {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.15em;
  font-weight: 600;
  margin-bottom: 24px;
}
.strength-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
}
.strength-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 64px;
}

.service-card {
  background: var(--bg2);
  border: 1px solid #1e1e1e;
  padding: 36px;
  border-radius: var(--radius);
  transition: var(--trans);
  cursor: pointer;
}
.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.service-icon {
  font-size: 32px;
  margin-bottom: 20px;
}
.service-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.service-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--accent);
  margin-top: 20px;
  transition: var(--trans);
}
.service-card:hover .service-link { gap: 10px; }

/* ===== WORKS ===== */
.works { background: var(--bg2); }

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 64px;
}

.work-card {
  background: var(--bg3);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--trans);
}
.work-card:hover { transform: translateY(-4px); }

.work-img {
  height: 200px;
  background: linear-gradient(135deg, #1a1a1a, #252525);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--accent);
  position: relative;
  overflow: hidden;
}
.work-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
}
.work-body { padding: 24px; }
.work-tag {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.work-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.work-card p {
  font-size: 13px;
  color: var(--muted);
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, #111 0%, #0a0a0a 100%);
  border-top: 1px solid #1e1e1e;
  border-bottom: 1px solid #1e1e1e;
  text-align: center;
}
.cta-section .title { margin-bottom: 16px; }
.cta-section .sub { margin: 0 auto 40px; }

/* ===== CONTACT ===== */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
  margin-top: 64px;
}

.contact-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
}
.contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  align-items: flex-start;
}
.contact-item-icon {
  font-size: 20px;
  margin-top: 2px;
  flex-shrink: 0;
}
.contact-item-text {
  font-size: 14px;
  color: var(--muted);
}
.contact-item-text strong {
  display: block;
  font-size: 16px;
  color: var(--text);
  margin-bottom: 2px;
}

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg2);
  border: 1px solid #2a2a2a;
  color: var(--text);
  padding: 12px 16px;
  font-size: 14px;
  border-radius: var(--radius);
  transition: var(--trans);
  font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ===== FOOTER ===== */
.footer {
  background: var(--bg2);
  border-top: 1px solid #1e1e1e;
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .nav-logo { margin-bottom: 16px; font-size: 20px; }
.footer-brand p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.8;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 13px;
  color: var(--muted);
  transition: var(--trans);
}
.footer-col ul a:hover { color: var(--text); }

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid #1e1e1e;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-bottom p { font-size: 12px; color: var(--muted); }

/* ===== PAGE HERO ===== */
.page-hero {
  padding: 140px 0 80px;
  background: linear-gradient(180deg, #111 0%, var(--bg) 100%);
  position: relative;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-hero .container { position: relative; }
.page-hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  margin-bottom: 16px;
}

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }

  .hero-stats { gap: 32px; flex-wrap: wrap; }
  .strengths-grid { grid-template-columns: 1fr; gap: 0; }
  .services-grid { grid-template-columns: 1fr; }
  .works-grid { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }

  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(10,10,10,0.98);
    padding: 32px 24px;
    gap: 24px;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #1e1e1e;
  }
  .nav.open .nav-cta { display: inline-flex; margin: 0 24px; }
}