/* ===== リセット & ベース ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --gold: #c9a84c;
  --gold-light: #e8c96a;
  --dark: #1a1a2e;
  --dark2: #16213e;
  --text: #333;
  --text-light: #666;
  --bg: #f9f7f4;
  --white: #ffffff;
  --radius: 8px;
  --shadow: 0 4px 20px rgba(0,0,0,.08);
  --transition: .3s ease;
}

html { scroll-behavior: smooth; }

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

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

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

/* ===== ヘッダー ===== */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

#header.scrolled {
  background: var(--dark);
  box-shadow: 0 2px 16px rgba(0,0,0,.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-star {
  color: var(--gold);
  font-size: 1rem;
  letter-spacing: -2px;
}

.logo-text {
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .05em;
}

.nav-list {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-list a {
  color: var(--white);
  font-size: .9rem;
  letter-spacing: .05em;
  transition: color var(--transition);
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-list a:hover { color: var(--gold-light); }
.nav-list a:hover::after { transform: scaleX(1); }

/* ハンバーガー */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 26px; height: 2px;
  background: var(--white);
  transition: var(--transition);
}

/* モバイルナビ */
.mobile-nav {
  display: none;
  background: var(--dark);
  padding: 16px 24px;
}

.mobile-nav.open { display: block; }

.mobile-nav ul { list-style: none; }

.mobile-nav li { border-bottom: 1px solid rgba(255,255,255,.1); }

.mobile-nav a {
  display: block;
  color: var(--white);
  padding: 14px 0;
  font-size: .95rem;
}

/* ===== ボタン ===== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .05em;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--gold);
  color: var(--dark);
  border-color: var(--gold);
}

.btn-primary:hover {
  background: var(--gold-light);
  border-color: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201,168,76,.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--dark);
  transform: translateY(-2px);
}

.btn-full { width: 100%; text-align: center; }

/* ===== ヒーロー ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--dark2) 0%, #0f3460 50%, var(--dark) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(26,26,46,.8) 0%, rgba(26,26,46,.3) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  padding: 0 24px;
  margin: 0 auto;
}

.hero-sub {
  color: var(--gold);
  font-size: 1rem;
  letter-spacing: .15em;
  margin-bottom: 16px;
}

.hero-title {
  color: var(--white);
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero-desc {
  color: rgba(255,255,255,.8);
  font-size: 1.05rem;
  margin-bottom: 40px;
  line-height: 1.9;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== 実績バー ===== */
.stats-bar {
  background: var(--gold);
  padding: 28px 0;
}

.stats-inner {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 20px;
}

.stat {
  text-align: center;
  color: var(--dark);
}

.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.stat-num small {
  font-size: 1rem;
  font-weight: 600;
}

.stat-label {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  margin-top: 6px;
  letter-spacing: .08em;
}

/* ===== セクション共通 ===== */
.section { padding: 96px 0; }

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  display: inline-block;
  color: var(--gold);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .2em;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: var(--dark);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px; height: 3px;
  background: var(--gold);
  margin: 16px auto 0;
  border-radius: 2px;
}

.section-desc {
  color: var(--text-light);
  margin-top: 16px;
  font-size: .95rem;
}

/* ===== About ===== */
.about { background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-light);
  margin-bottom: 16px;
  font-size: .95rem;
}

.about-points {
  list-style: none;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.about-points li {
  color: var(--dark);
  font-weight: 600;
  font-size: .95rem;
}

.about-image-box {
  background: linear-gradient(135deg, var(--dark2), #0f3460);
  border-radius: 16px;
  padding: 60px 40px;
  text-align: center;
  box-shadow: var(--shadow);
}

.about-image-inner .about-icon {
  font-size: 5rem;
  display: block;
  margin-bottom: 16px;
}

.about-image-inner p {
  color: rgba(255,255,255,.8);
  font-size: 1rem;
}

/* ===== Service ===== */
.service { background: var(--bg); }

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 28px;
}

.service-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 768px) {
  .service-grid-3 { grid-template-columns: 1fr; }
}

.service-card {
  background: var(--white);
  border-radius: 12px;
  padding: 40px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  border-top: 4px solid transparent;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,.12);
  border-top-color: var(--gold);
}

.service-icon {
  font-size: 2.8rem;
  margin-bottom: 20px;
  display: block;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
}

.service-card p {
  color: var(--text-light);
  font-size: .9rem;
  line-height: 1.8;
}

/* ===== Contact ===== */
.contact { background: var(--white); }

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.ci-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}

.ci-label {
  font-size: .8rem;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: .1em;
  margin-bottom: 4px;
}

.ci-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
}

.ci-note {
  font-size: .82rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* フォーム */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: .88rem;
  font-weight: 600;
  color: var(--dark);
}

.required {
  display: inline-block;
  background: var(--gold);
  color: var(--dark);
  font-size: .72rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: 6px;
  vertical-align: middle;
}

.form-group input,
.form-group select,
.form-group textarea {
  border: 1.5px solid #ddd;
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: .95rem;
  font-family: inherit;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--bg);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201,168,76,.15);
}

.form-group textarea { resize: vertical; }

.form-success {
  display: none;
  background: #f0fdf4;
  border: 1.5px solid #22c55e;
  color: #166534;
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 600;
}

.form-success.visible { display: block; }

/* ===== フッター ===== */
.footer {
  background: var(--dark);
  padding: 48px 0 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 40px;
}

.footer-brand .logo-star { color: var(--gold); font-size: .9rem; letter-spacing: -2px; }
.footer-brand .logo-text { color: var(--white); font-size: 1rem; font-weight: 700; }

.footer-tagline {
  color: rgba(255,255,255,.5);
  font-size: .82rem;
  margin-top: 10px;
}

.footer-meta {
  color: rgba(255,255,255,.35);
  font-size: .78rem;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255,255,255,.6);
  font-size: .88rem;
  transition: color var(--transition);
}

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

.footer-copy {
  border-top: 1px solid rgba(255,255,255,.1);
  text-align: center;
  padding: 20px;
}

.footer-copy p {
  color: rgba(255,255,255,.35);
  font-size: .8rem;
}

/* ===== レスポンシブ ===== */
@media (max-width: 768px) {
  .nav-list { display: none; }

  .hamburger { display: flex; }

  .about-grid { grid-template-columns: 1fr; }
  .about-image { display: none; }

  .contact-wrapper { grid-template-columns: 1fr; }

  .hero-content { text-align: center; }
  .hero-buttons { justify-content: center; }

  .section { padding: 64px 0; }

  .footer-inner { flex-direction: column; align-items: center; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 480px) {
  .stats-inner { flex-direction: column; gap: 16px; }
  .service-grid { grid-template-columns: 1fr; }
}