/* =============================================
   AOBA HOME - REAL ESTATE STYLESHEET
   ============================================= */

:root {
  --color-primary: #1B3A5C;
  --color-primary-light: #EDF2F7;
  --color-primary-dark: #0F2440;
  --color-accent: #D4A843;
  --color-accent-light: #FBF5E8;
  --color-green: #2E7D4F;
  --color-red: #C0392B;
  --color-text: #333840;
  --color-text-light: #6B7280;
  --color-heading: #1A202C;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F7FA;
  --color-bg-warm: #FDFAF5;
  --color-border: #E2E8F0;
  --color-white: #FFFFFF;
  --font-display: 'Outfit', 'Noto Sans JP', sans-serif;
  --font-body: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.07);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --header-height: 68px;
  --header-top-height: 36px;
  --transition: 0.3s ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + var(--header-top-height) + 20px); }
body { font-family: var(--font-body); font-size: 15px; line-height: 1.8; color: var(--color-text); background: var(--color-bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
ul { list-style: none; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.pc-only { display: inline; }
.sp-only { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 500;
  font-family: var(--font-body); cursor: pointer; transition: all var(--transition);
  border: 2px solid transparent; letter-spacing: 0.03em;
}
.btn-primary { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: var(--color-white); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(27,58,92,0.25); }
.btn-secondary { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-secondary:hover { background: var(--color-primary); color: var(--color-white); transform: translateY(-2px); }

/* ---------- HEADER ---------- */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; transition: all var(--transition); }

.header-top {
  background: var(--color-primary); color: var(--color-white); font-size: 12px;
  height: var(--header-top-height); display: flex; align-items: center; transition: all var(--transition);
}
.header-top-inner { display: flex; justify-content: flex-end; }
.header-info { display: flex; gap: 20px; }
.header-info span { display: flex; align-items: center; gap: 6px; }
.header-info a { color: var(--color-white); }

.header-main {
  background: rgba(255,255,255,0.97); backdrop-filter: blur(10px);
  height: var(--header-height); display: flex; align-items: center;
  box-shadow: var(--shadow-sm); transition: all var(--transition);
}
.header-main-inner { display: flex; align-items: center; justify-content: space-between; }

.logo { display: flex; align-items: center; gap: 10px; color: var(--color-heading); text-decoration: none; }
.logo:hover { color: var(--color-heading); }
.logo-icon { font-size: 26px; color: var(--color-primary); }
.logo-text { display: flex; flex-direction: column; }
.logo-name { font-family: var(--font-body); font-size: 18px; font-weight: 700; line-height: 1.2; letter-spacing: 0.06em; }
.logo-sub { font-family: var(--font-display); font-size: 10px; color: var(--color-text-light); letter-spacing: 0.14em; text-transform: uppercase; }

.main-nav ul { display: flex; align-items: center; gap: 2px; }
.main-nav a { display: block; padding: 8px 12px; font-size: 13px; font-weight: 500; color: var(--color-text); border-radius: var(--radius-sm); transition: all var(--transition); }
.main-nav a:hover, .main-nav a.active { color: var(--color-primary); }
.nav-cta { background: var(--color-accent) !important; color: var(--color-white) !important; border-radius: var(--radius-sm) !important; font-weight: 600 !important; margin-left: 6px; }
.nav-cta:hover { background: #c09530 !important; }

.site-header.scrolled .header-top { height: 0; overflow: hidden; opacity: 0; }
.site-header.scrolled .header-main { box-shadow: var(--shadow-md); }

.mobile-menu-btn { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; z-index: 1001; }
.mobile-menu-btn span { display: block; width: 24px; height: 2px; background: var(--color-heading); border-radius: 2px; transition: all var(--transition); }
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- HERO ---------- */
.hero {
  position: relative; min-height: 700px; max-height: 820px;
  margin-top: calc(var(--header-height) + var(--header-top-height));
  overflow: visible; padding-bottom: 60px;
}
.hero-slider { position: absolute; inset: 0; }
.hero-slide { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; transition: opacity 1.2s ease; }
.hero-slide.active { opacity: 1; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(160deg, rgba(15,36,64,0.65) 0%, rgba(27,58,92,0.4) 60%, rgba(0,0,0,0.2) 100%); }

.hero-content { position: relative; z-index: 2; padding-top: 100px; color: var(--color-white); }
.hero-lead { font-family: var(--font-display); font-size: 14px; letter-spacing: 0.18em; text-transform: uppercase; margin-bottom: 14px; opacity: 0.85; font-weight: 500; }
.hero-title { font-size: clamp(28px, 4.5vw, 46px); font-weight: 700; line-height: 1.45; margin-bottom: 16px; letter-spacing: 0.03em; }
.hero-desc { font-size: 15px; line-height: 1.9; margin-bottom: 20px; opacity: 0.9; font-weight: 300; }

.fade-up { opacity: 0; transform: translateY(20px); transition: opacity 0.7s ease, transform 0.7s ease; }
.hero-slide.active ~ .hero-content .fade-up,
.hero .fade-up.is-visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

.hero-dots { position: absolute; bottom: 100px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 10; }
.hero-dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.35); cursor: pointer; transition: all var(--transition); border: none; }
.hero-dot.active { background: var(--color-white); transform: scale(1.2); }

/* Search Box */
.hero-search { position: relative; z-index: 20; margin-top: 24px; }
.search-box {
  background: var(--color-white); border-radius: var(--radius-lg); padding: 28px 32px 24px;
  box-shadow: var(--shadow-lg);
}
.search-title { font-size: 16px; font-weight: 600; color: var(--color-heading); margin-bottom: 14px; }
.search-tabs { display: flex; gap: 4px; margin-bottom: 18px; }
.search-tab {
  padding: 7px 24px; border: 2px solid var(--color-border); background: var(--color-white);
  font-size: 13px; font-weight: 600; color: var(--color-text-light); cursor: pointer;
  border-radius: var(--radius-sm); transition: all var(--transition); font-family: var(--font-body);
}
.search-tab.active { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.search-form { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.search-field { flex: 1; min-width: 140px; }
.search-field label { display: block; font-size: 11.5px; font-weight: 600; color: var(--color-text-light); margin-bottom: 4px; letter-spacing: 0.04em; }
.search-field select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-size: 13.5px; font-family: var(--font-body); color: var(--color-text); background: var(--color-bg-alt);
  appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7280' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center; cursor: pointer;
}
.search-btn {
  padding: 10px 28px; background: var(--color-accent); color: var(--color-white); border: none;
  border-radius: var(--radius-sm); font-size: 14px; font-weight: 600; font-family: var(--font-body);
  cursor: pointer; display: flex; align-items: center; gap: 6px; transition: all var(--transition); white-space: nowrap;
}
.search-btn:hover { background: #c09530; transform: translateY(-1px); }

/* ---------- SECTIONS ---------- */
.section { padding: 100px 0; }
.section-property { background: var(--color-bg); }
.section-service { background: var(--color-bg-alt); }
.section-about { background: var(--color-bg); }
.section-flow { background: var(--color-bg-alt); }
.section-voice { background: var(--color-bg-warm); }
.section-company { background: var(--color-bg); }
.section-news { background: var(--color-bg-alt); }

.section-header { text-align: center; margin-bottom: 52px; }
.section-label { display: inline-block; font-family: var(--font-display); font-size: 13px; font-weight: 600; color: var(--color-accent); letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 6px; }
.section-title { font-size: 28px; font-weight: 700; color: var(--color-heading); letter-spacing: 0.04em; }
.section-title::after { content: ''; display: block; width: 40px; height: 3px; background: var(--color-primary); margin: 14px auto 0; border-radius: 3px; }
.section-desc { margin-top: 14px; color: var(--color-text-light); font-size: 14.5px; }

.scroll-fade { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.scroll-fade.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- PROPERTY ---------- */
.property-filter { display: flex; justify-content: center; gap: 8px; margin-bottom: 36px; flex-wrap: wrap; }
.filter-btn {
  padding: 8px 22px; border: 1px solid var(--color-border); background: var(--color-white);
  font-size: 13px; font-weight: 500; color: var(--color-text-light); cursor: pointer;
  border-radius: 50px; transition: all var(--transition); font-family: var(--font-body);
}
.filter-btn.active { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.filter-btn:hover:not(.active) { border-color: var(--color-primary); color: var(--color-primary); }

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

.property-card {
  background: var(--color-white); border-radius: var(--radius-md); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: all var(--transition);
}
.property-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.property-card.hidden { display: none; }

.property-card-img { position: relative; height: 200px; overflow: hidden; }
.property-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.property-card:hover .property-card-img img { transform: scale(1.05); }

.property-badge {
  position: absolute; top: 12px; left: 12px; padding: 3px 12px;
  font-size: 11px; font-weight: 700; border-radius: 50px; color: var(--color-white);
}
.badge-new { background: var(--color-red); }
.badge-recommend { background: var(--color-accent); }

.property-type {
  position: absolute; bottom: 12px; right: 12px; padding: 3px 12px;
  background: var(--color-primary); color: var(--color-white);
  font-size: 11px; font-weight: 600; border-radius: var(--radius-sm);
}

.property-card-body { padding: 20px; }
.property-name { font-size: 15px; font-weight: 600; color: var(--color-heading); margin-bottom: 8px; line-height: 1.4; }
.property-price { font-size: 13px; color: var(--color-text); margin-bottom: 12px; }
.price-num { font-family: var(--font-display); font-size: 26px; font-weight: 700; color: var(--color-red); }

.property-specs { display: flex; gap: 14px; margin-bottom: 10px; flex-wrap: wrap; }
.property-specs span { font-size: 12.5px; color: var(--color-text); display: flex; align-items: center; gap: 4px; }
.property-specs i { color: var(--color-primary); font-size: 12px; }

.property-address, .property-access { font-size: 12.5px; color: var(--color-text-light); margin-bottom: 4px; display: flex; align-items: baseline; gap: 6px; }
.property-address i, .property-access i { color: var(--color-text-light); font-size: 11px; flex-shrink: 0; }

.property-detail {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 500;
  color: var(--color-primary); margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--color-border);
  width: 100%;
}
.property-detail:hover { gap: 10px; color: var(--color-accent); }

.property-more { text-align: center; margin-top: 40px; }

/* ---------- SERVICE ---------- */
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card {
  background: var(--color-white); border-radius: var(--radius-md); padding: 32px 24px;
  box-shadow: var(--shadow-sm); transition: all var(--transition); text-align: center;
  border-top: 3px solid transparent;
}
.service-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-top-color: var(--color-primary); }
.service-card-icon {
  width: 60px; height: 60px; border-radius: 50%; background: var(--color-primary-light);
  color: var(--color-primary); display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin: 0 auto 18px;
}
.service-card h3 { font-size: 17px; font-weight: 700; color: var(--color-heading); margin-bottom: 10px; }
.service-card > p { font-size: 13.5px; color: var(--color-text-light); line-height: 1.8; margin-bottom: 16px; text-align: left; }
.service-list { text-align: left; margin-bottom: 16px; }
.service-list li {
  padding: 4px 0 4px 18px; font-size: 13px; color: var(--color-text); position: relative;
}
.service-list li::before {
  content: ''; position: absolute; left: 2px; top: 12px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--color-accent);
}
.service-link { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 500; color: var(--color-primary); }
.service-link:hover { gap: 10px; }

/* ---------- ABOUT / STRENGTH ---------- */
.strength-grid { display: flex; flex-direction: column; gap: 48px; margin-bottom: 60px; }
.strength-item {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; position: relative;
}
.strength-item.reverse { direction: rtl; }
.strength-item.reverse > * { direction: ltr; }

.strength-number {
  position: absolute; top: -20px; left: -5px; font-family: var(--font-display);
  font-size: 80px; font-weight: 700; color: var(--color-primary); opacity: 0.06;
  line-height: 1; pointer-events: none;
}
.strength-item.reverse .strength-number { left: auto; right: -5px; }

.strength-img { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-md); }
.strength-img img { width: 100%; height: 300px; object-fit: cover; }

.strength-body h3 {
  font-size: 21px; font-weight: 700; color: var(--color-heading); margin-bottom: 14px;
  padding-left: 16px; border-left: 3px solid var(--color-primary);
}
.strength-body p { font-size: 14.5px; color: var(--color-text); line-height: 1.9; }

.achievement-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  background: var(--color-primary); border-radius: var(--radius-lg); padding: 40px 32px;
}
.achievement-item { text-align: center; color: var(--color-white); }
.achievement-num { font-family: var(--font-display); font-size: 40px; font-weight: 700; line-height: 1; }
.achievement-suffix { font-size: 16px; font-weight: 600; }
.achievement-label { display: block; font-size: 12.5px; opacity: 0.7; margin-top: 6px; }

/* ---------- FLOW ---------- */
.flow-steps { display: flex; align-items: flex-start; gap: 0; flex-wrap: wrap; justify-content: center; }
.flow-step {
  flex: 0 0 calc(100%/6 - 20px); text-align: center; padding: 0 8px;
}
.flow-arrow {
  flex: 0 0 16px; color: var(--color-border); font-size: 14px; padding-top: 36px;
}
.flow-step-icon {
  position: relative; width: 72px; height: 72px; border-radius: 50%;
  background: var(--color-primary-light); color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin: 0 auto 14px;
}
.flow-num {
  position: absolute; top: -4px; right: -4px; width: 24px; height: 24px;
  border-radius: 50%; background: var(--color-accent); color: var(--color-white);
  font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.flow-step h3 { font-size: 14px; font-weight: 600; color: var(--color-heading); margin-bottom: 8px; }
.flow-step p { font-size: 12.5px; color: var(--color-text-light); line-height: 1.7; }

/* ---------- VOICE ---------- */
.voice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.voice-card {
  background: var(--color-white); border-radius: var(--radius-md); padding: 28px 24px;
  box-shadow: var(--shadow-sm); transition: all var(--transition);
}
.voice-card:hover { box-shadow: var(--shadow-md); }
.voice-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.voice-avatar {
  width: 44px; height: 44px; border-radius: 50%; background: var(--color-primary-light);
  color: var(--color-primary); display: flex; align-items: center; justify-content: center;
  font-size: 18px; flex-shrink: 0;
}
.voice-name { display: block; font-size: 14px; font-weight: 600; color: var(--color-heading); }
.voice-info { display: block; font-size: 11.5px; color: var(--color-text-light); }
.voice-stars { color: var(--color-accent); font-size: 14px; margin-bottom: 12px; display: flex; gap: 2px; }
.voice-text { font-size: 13.5px; color: var(--color-text); line-height: 1.85; }

/* ---------- COMPANY ---------- */
.company-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.company-table { width: 100%; border-collapse: collapse; }
.company-table th, .company-table td {
  padding: 13px 16px; border-bottom: 1px solid var(--color-border);
  text-align: left; font-size: 14px; vertical-align: top;
}
.company-table th { width: 110px; font-weight: 600; color: var(--color-heading); background: var(--color-primary-light); white-space: nowrap; }
.company-table td a { font-weight: 500; }

.map-wrapper { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); margin-bottom: 16px; }
.map-wrapper iframe { display: block; }
.access-info p { font-size: 13.5px; color: var(--color-text); display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.access-info i { color: var(--color-primary); }

/* ---------- CTA ---------- */
.section-cta {
  position: relative; padding: 100px 0; overflow: hidden;
}
.cta-bg { position: absolute; inset: 0; background-size: cover; background-position: center; background-attachment: fixed; }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(160deg, rgba(15,36,64,0.9) 0%, rgba(27,58,92,0.85) 100%); }
.cta-content { position: relative; z-index: 2; text-align: center; color: var(--color-white); }
.cta-content h2 { font-size: 30px; font-weight: 700; margin-bottom: 16px; letter-spacing: 0.04em; }
.cta-content > p { font-size: 15px; opacity: 0.9; margin-bottom: 36px; line-height: 1.9; }
.cta-btns { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-bottom: 20px; }
.btn-cta-phone {
  display: inline-flex; align-items: center; gap: 10px; padding: 16px 40px;
  background: var(--color-white); color: var(--color-primary); font-family: var(--font-display);
  font-size: 22px; font-weight: 700; border-radius: var(--radius-sm); transition: all var(--transition);
}
.btn-cta-phone:hover { transform: translateY(-3px); box-shadow: 0 6px 24px rgba(0,0,0,0.2); color: var(--color-primary); }
.btn-cta-web {
  display: inline-flex; align-items: center; gap: 10px; padding: 16px 40px;
  background: var(--color-accent); color: var(--color-white); font-size: 15px; font-weight: 600;
  border-radius: var(--radius-sm); border: 2px solid var(--color-accent); transition: all var(--transition);
}
.btn-cta-web:hover { background: transparent; border-color: var(--color-white); color: var(--color-white); transform: translateY(-3px); }
.cta-hours { font-size: 13px; opacity: 0.7; }

/* ---------- NEWS ---------- */
.news-list { max-width: 780px; margin: 0 auto; }
.news-item {
  display: flex; align-items: center; gap: 16px; padding: 18px 0;
  border-bottom: 1px solid var(--color-border); color: var(--color-text); transition: all var(--transition);
}
.news-item:first-child { border-top: 1px solid var(--color-border); }
.news-item:hover { color: var(--color-primary); padding-left: 8px; }
.news-date { font-family: var(--font-display); font-size: 13.5px; color: var(--color-text-light); white-space: nowrap; flex-shrink: 0; }
.news-tag { display: inline-block; padding: 2px 12px; font-size: 11px; font-weight: 600; border-radius: 50px; white-space: nowrap; flex-shrink: 0; }
.tag-info { background: var(--color-primary-light); color: var(--color-primary); }
.tag-property { background: #DCFCE7; color: var(--color-green); }
.tag-event { background: var(--color-accent-light); color: #B8923E; }
.news-text { font-size: 14px; flex: 1; }
.news-more { text-align: center; margin-top: 36px; }

/* ---------- FOOTER ---------- */
.site-footer { background: #1A202C; color: #9CA3AF; padding: 56px 0 0; }
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 44px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo .logo-icon { color: #9CA3AF; font-size: 22px; }
.footer-logo .logo-name { color: var(--color-white); font-size: 16px; }
.footer-logo .logo-sub { color: #6B7280; }
.footer-address { font-size: 13px; line-height: 1.8; margin-bottom: 10px; }
.footer-tel { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.footer-tel a { color: var(--color-white); }
.footer-tel i { color: var(--color-accent); }
.footer-license { font-size: 11.5px; color: #6B7280; }
.footer-nav h4 { font-size: 13px; font-weight: 600; color: var(--color-white); margin-bottom: 14px; letter-spacing: 0.04em; }
.footer-nav li { margin-bottom: 7px; }
.footer-nav a { font-size: 13px; color: #9CA3AF; }
.footer-nav a:hover { color: var(--color-accent); }
.footer-bottom { padding: 18px 0; text-align: center; font-size: 12px; color: #6B7280; }

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed; bottom: 100px; right: 24px; width: 46px; height: 46px;
  border-radius: var(--radius-sm); background: var(--color-primary); color: var(--color-white);
  border: none; cursor: pointer; font-size: 15px; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); opacity: 0; visibility: hidden; transform: translateY(20px);
  transition: all var(--transition); z-index: 900;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-3px); }

/* ---------- FIXED SP BAR ---------- */
.fixed-sp-bar {
  display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 999;
  background: var(--color-white); box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}
.fixed-sp-bar a {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px; font-size: 14px; font-weight: 600; color: var(--color-white);
}
.sp-phone { background: var(--color-primary); }
.sp-mail { background: var(--color-accent); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .main-nav {
    display: none; position: fixed; inset: 0; background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px); z-index: 1000; padding: 100px 32px 32px; overflow-y: auto;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; }
  .main-nav a { font-size: 17px; padding: 16px 0; border-bottom: 1px solid var(--color-border); }
  .nav-cta { margin-left: 0 !important; margin-top: 16px; text-align: center; display: block !important; border-bottom: none !important; }
  .mobile-menu-btn { display: flex; }

  .property-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .strength-item, .strength-item.reverse { grid-template-columns: 1fr; direction: ltr; gap: 24px; }
  .company-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  .flow-steps { gap: 4px; }
  .flow-step { flex: 0 0 calc(33.33% - 16px); margin-bottom: 24px; }
  .flow-arrow { display: none; }
}

@media (max-width: 768px) {
  :root { --header-height: 60px; --header-top-height: 0px; }
  .header-top { display: none; }
  .pc-only { display: none; }
  .sp-only { display: inline; }

  .section { padding: 72px 0; }
  .section-title { font-size: 24px; }

  .hero { min-height: 580px; margin-top: var(--header-height); padding-bottom: 40px; }
  .hero-content { padding-top: 60px; }
  .hero-title { font-size: 24px; }

  .search-form { flex-direction: column; gap: 10px; }
  .search-field { min-width: 100%; }
  .search-btn { width: 100%; justify-content: center; padding: 12px; }

  .property-grid { grid-template-columns: 1fr; gap: 20px; }
  .service-grid { grid-template-columns: 1fr; gap: 16px; }
  .service-card { text-align: left; display: grid; grid-template-columns: 1fr; }
  .service-card-icon { margin: 0 0 14px; }

  .achievement-bar { grid-template-columns: 1fr 1fr; gap: 20px; padding: 32px 24px; }
  .achievement-num { font-size: 32px; }

  .flow-step { flex: 0 0 calc(50% - 12px); }

  .voice-grid { grid-template-columns: 1fr; gap: 16px; }

  .news-item { flex-wrap: wrap; gap: 8px; }
  .news-text { flex-basis: 100%; }

  .cta-content h2 { font-size: 22px; }
  .cta-btns { flex-direction: column; align-items: center; }
  .btn-cta-phone { font-size: 18px; padding: 14px 32px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .fixed-sp-bar { display: flex; }
  .site-footer { padding-bottom: 60px; }
  .back-to-top { bottom: 80px; }
}

@media (max-width: 480px) {
  .hero { min-height: 520px; }
  .hero-title { font-size: 22px; }
  .property-card-img { height: 180px; }
  .flow-step { flex: 0 0 100%; }
  .achievement-bar { grid-template-columns: 1fr 1fr; }
}