:root {
  --primary-dark: #0B1A35;
  --primary-blue: #13284B;
  --primary-blue-light: #1a3358;
  --accent-red: #C8102E;
  --accent-red-dark: #a00d24;
  --accent-rust: #B54A3A;
  --link-blue: #0066CC;
  --text-white: #FFFFFF;
  --text-dark: #111827;
  --text-gray: #6B7280;
  --text-light-gray: #9CA3AF;
  --bg-white: #FFFFFF;
  --bg-light: #F9FAFB;
  --border-light: #E0E0E0;
  --border-very-light: #EEEEEE;
  --badge-bg: #E8EDF2;
  --header-height: 70px;
  --container-width: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic Pro', 'Meiryo', sans-serif;
  color: var(--text-dark);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ===================== HEADER ===================== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: var(--bg-white);
  z-index: 1000;
  display: flex;
  align-items: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

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

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

.header-right {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header-right a {
  font-size: 13px;
  color: var(--text-dark);
  font-weight: 400;
  transition: color .2s;
}

.header-right a:hover { color: var(--accent-red); }

.header-cta {
  background: var(--accent-red);
  color: var(--text-white) !important;
  padding: 10px 24px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 3px;
  transition: background .2s;
}

.header-cta:hover { background: var(--accent-red-dark); }

/* ===================== HERO BANNER ===================== */
.detail-hero {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
  padding: 60px 0 50px;
}

.detail-hero-label {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  letter-spacing: 3px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.detail-hero h1 {
  font-family: 'Noto Serif JP', serif;
  font-size: 36px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

.detail-hero-address {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
}

/* ===================== PROPERTY CONTENT ===================== */
.property-section {
  padding: 60px 0;
}

.property-layout {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: start;
}

.property-image-wrap {
  position: relative;
}

.property-image {
  width: 100%;
  border-radius: 4px;
  overflow: hidden;
}

.property-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.property-image-note {
  font-size: 12px;
  color: var(--text-gray);
  margin-top: 12px;
  line-height: 1.6;
}

/* Summary card */
.property-summary {
  background: var(--bg-white);
  border-top: 4px solid var(--primary-dark);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.property-summary-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  padding: 20px 28px;
  border-bottom: 1px solid var(--border-very-light);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
}

.spec-table tr {
  border-bottom: 1px solid var(--border-very-light);
}

.spec-table tr:last-child { border-bottom: none; }

.spec-table th {
  padding: 14px 28px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-dark);
  text-align: left;
  width: 100px;
  vertical-align: middle;
  background: var(--bg-light);
}

.spec-table td {
  padding: 14px 28px;
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 400;
}

.property-cta {
  display: block;
  width: calc(100% - 56px);
  margin: 24px 28px 28px;
  background: var(--accent-red);
  color: var(--text-white);
  padding: 16px;
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  border-radius: 3px;
  transition: background .2s;
  border: none;
  cursor: pointer;
}

.property-cta:hover { background: var(--accent-red-dark); }

/* ===================== NAV BUTTONS ===================== */
.nav-buttons {
  padding: 0 0 40px;
}

.nav-buttons .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid var(--border-light);
  background: var(--bg-white);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
  border-radius: 3px;
  transition: all .2s;
}

.nav-btn:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.nav-btn-arrow {
  font-size: 18px;
  line-height: 1;
}

/* ===================== INVESTMENT SECTION ===================== */
.investment {
  background: var(--bg-light);
  padding: 64px 0;
}

.investment-title {
  text-align: center;
  margin-bottom: 40px;
}

.investment-title .eyebrow {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-gray);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.investment-title h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-dark);
  position: relative;
  display: inline-block;
  padding-bottom: 14px;
}

.investment-title h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: var(--accent-rust);
}

.investment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.investment-card {
  background: var(--bg-white);
  padding: 36px 28px;
  border-radius: 4px;
  transition: box-shadow .3s;
}

.investment-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.investment-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 20px;
}

.investment-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.investment-card p {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.8;
}

/* ===================== FOOTER ===================== */
.footer {
  background: var(--primary-dark);
  padding: 24px 0;
}

.footer-copyright {
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 768px) {
  .header-right a:not(.header-cta) { display: none; }

  .detail-hero h1 { font-size: 26px; }

  .property-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .investment-grid {
    grid-template-columns: 1fr;
  }
}