/* ===== Design Tokens ===== */
:root {
  --primary: #0A5EB0;
  --primary-dark: #063A6E;
  --primary-light: #E8F1FA;
  --accent: #FF8C42;
  --accent-hover: #E67A30;
  --teal: #2EC4B6;
  --bg: #F8FAFB;
  --bg-white: #FFFFFF;
  --text: #1A1A2E;
  --text-light: #5A6178;
  --text-white: #FFFFFF;
  --shadow: 0 4px 24px rgba(10,94,176,0.08);
  --shadow-lg: 0 8px 40px rgba(10,94,176,0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Noto Sans JP', 'Inter', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(10,94,176,0.08);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.15rem;
  color: var(--primary-dark);
}

.logo-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  font-weight: 900;
}

.nav-list {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav-list a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}

.nav-list a:hover { color: var(--primary); }
.nav-list a:hover::after { width: 100%; }

.header-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 10px 20px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  transition: background var(--transition), transform var(--transition);
}

.header-phone:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 6px;
  z-index: 1100;
}

.hamburger span {
  width: 24px; height: 2.5px;
  background: var(--primary-dark);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.25;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6,58,110,0.85) 0%, rgba(10,94,176,0.7) 50%, rgba(46,196,182,0.4) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1140px;
  margin: 0 auto;
  padding: 120px 20px 80px;
  color: var(--text-white);
}

.hero-subtitle {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  border: 1px solid rgba(255,255,255,0.2);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.hero-desc {
  font-size: 1.05rem;
  max-width: 560px;
  opacity: 0.9;
  line-height: 1.9;
  margin-bottom: 32px;
}

.hero-badges {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.18);
  padding: 10px 18px;
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 600;
}

.badge-icon {
  font-size: 1.2rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255,140,66,0.35);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(255,140,66,0.45);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
  transform: translateY(-2px);
}

/* Wave Divider */
.wave-divider {
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  z-index: 3;
  line-height: 0;
}

.wave-divider svg {
  width: 100%;
  height: 80px;
}

/* ===== Section Common ===== */
.section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900;
  color: var(--primary-dark);
  margin-bottom: 14px;
}

.section-desc {
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
  font-size: 0.95rem;
}

/* ===== Services ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  --card-c1: var(--primary-dark);
  --card-c2: var(--primary);
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid rgba(10,94,176,0.08);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.service-icon-area {
  position: relative;
  height: 130px;
  background: linear-gradient(145deg, var(--card-c1), var(--card-c2));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.service-emoji {
  font-size: 2.8rem;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.15));
  transition: transform 0.4s cubic-bezier(.4,0,.2,1);
}

.service-card:hover .service-emoji {
  transform: scale(1.1);
}

.service-deco {
  position: absolute;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  top: -30px;
  right: -20px;
  z-index: 0;
}

.service-deco--sm {
  width: 60px;
  height: 60px;
  top: auto;
  right: auto;
  bottom: -15px;
  left: -10px;
  background: rgba(255,255,255,0.04);
}

.service-body {
  padding: 22px 24px 26px;
  text-align: center;
}

.service-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 6px;
}

.service-body p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

.services-note {
  text-align: center;
  margin-top: 32px;
  color: var(--text-light);
  font-size: 0.88rem;
  background: var(--primary-light);
  display: inline-block;
  padding: 10px 28px;
  border-radius: 50px;
  margin-left: auto;
  margin-right: auto;
}

.section:has(.services-note) .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Card color themes — professional navy palette */
.service-card--water  { --card-c1: #0D3B66; --card-c2: #1976D2; }
.service-card--toilet { --card-c1: #0D4A5E; --card-c2: #1A8BA7; }
.service-card--heater { --card-c1: #3E2723; --card-c2: #8D6E63; }
.service-card--pipe   { --card-c1: #1B3A2D; --card-c2: #4A7C68; }
.service-card--hvac   { --card-c1: #1A2744; --card-c2: #546E9B; }
.service-card--reform { --card-c1: #37293B; --card-c2: #7B6882; }

/* ===== Reasons ===== */
.reasons { background: linear-gradient(180deg, var(--bg) 0%, var(--primary-light) 100%); }

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.reason-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 36px 20px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid rgba(10,94,176,0.06);
}

.reason-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.reason-icon-wrap {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: var(--primary-light);
  transition: transform var(--transition);
}

.reason-card:hover .reason-icon-wrap {
  transform: scale(1.1);
}

.reason-icon--blue  { background: #E8F1FA; }
.reason-icon--teal  { background: #E4F2F0; }
.reason-icon--orange { background: #F5EFEA; }
.reason-icon--green { background: #EAF2EA; }

.reason-stat {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--primary-dark);
  font-family: 'Inter', sans-serif;
  line-height: 1.1;
  margin-bottom: 8px;
}

.reason-stat small {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-light);
  margin-left: 2px;
}

.reason-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 6px;
}

.reason-card p {
  font-size: 0.82rem;
  color: var(--text-light);
}

/* ===== Flow ===== */
.flow-steps {
  display: flex;
  gap: 20px;
  position: relative;
}

.flow-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 60px;
  right: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--teal));
  border-radius: 2px;
  z-index: 0;
}

.flow-step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-circle {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-weight: 900;
  box-shadow: 0 4px 16px rgba(10,94,176,0.25);
  transition: transform var(--transition);
}

.step-circle:hover { transform: scale(1.08); }

.step-num {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.8;
}

.step-icon { font-size: 1.5rem; }

.flow-step h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 6px;
}

.flow-step p {
  font-size: 0.82rem;
  color: var(--text-light);
}

/* ===== Area ===== */
.area { background: var(--primary-dark); color: var(--text-white); }
.area .section-label { color: var(--teal); }
.area .section-title { color: var(--text-white); }
.area .section-desc { color: rgba(255,255,255,0.7); }

.area-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 36px;
}

.area-tag {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  backdrop-filter: blur(6px);
  transition: all var(--transition);
}

.area-tag:hover {
  background: rgba(255,255,255,0.18);
  transform: translateY(-2px);
}

.area-note {
  text-align: center;
  margin-top: 28px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}

/* ===== Reviews ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  position: relative;
  transition: all var(--transition);
}

.review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.review-quote {
  position: absolute;
  top: 16px; left: 24px;
  font-size: 3rem;
  color: var(--primary-light);
  font-family: serif;
  line-height: 1;
}

.review-stars {
  color: #FFB800;
  font-size: 1rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-card blockquote {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 18px;
}

.review-meta {
  font-size: 0.82rem;
  color: var(--text-light);
  font-weight: 600;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

.about-text h2 {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--primary-dark);
  margin-bottom: 16px;
}

.about-text p {
  color: var(--text-light);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.about-info {
  margin-top: 24px;
}

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

.about-info th,
.about-info td {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(10,94,176,0.08);
}

.about-info th {
  font-weight: 700;
  color: var(--primary-dark);
  width: 110px;
  white-space: nowrap;
}

/* ===== Contact ===== */
.contact { background: linear-gradient(180deg, var(--bg) 0%, var(--primary-light) 100%); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-box {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: var(--text-white);
  border-radius: var(--radius);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-info-box h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.contact-info-box p {
  opacity: 0.8;
  font-size: 0.9rem;
  margin-bottom: 28px;
}

.contact-phone-big {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.8rem;
  font-weight: 900;
  font-family: 'Inter', 'Noto Sans JP', sans-serif;
  margin-bottom: 20px;
}

.contact-phone-big span:first-child { font-size: 2rem; }

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  opacity: 0.85;
}

.contact-form {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid rgba(10,94,176,0.12);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: var(--bg);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
}

.form-group textarea { min-height: 120px; resize: vertical; }

.btn-submit {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(10,94,176,0.3);
}

/* ===== Footer ===== */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo {
  color: #fff;
  font-weight: 900;
  font-size: 1.1rem;
}

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

.footer-links a {
  font-size: 0.85rem;
  transition: color var(--transition);
}

.footer-links a:hover { color: #fff; }

.footer-copy {
  text-align: center;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.8rem;
}

/* ===== Mobile Sticky CTA ===== */
.mobile-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 999;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  padding: 10px 16px;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
}

.mobile-cta-inner {
  display: flex;
  gap: 10px;
}

.mobile-cta .btn {
  flex: 1;
  justify-content: center;
  padding: 14px 10px;
  font-size: 0.9rem;
  border-radius: 12px;
}

/* ===== Scroll Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  .nav-list, .header-phone-desktop { display: none; }
  .hamburger { display: flex; }

  .mobile-nav {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    z-index: 1050;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    transform: translateX(100%);
    transition: transform var(--transition);
  }

  .mobile-nav.open { transform: translateX(0); }

  .mobile-nav a {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-dark);
  }

  .reasons-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {


  .hero h1 { font-size: 1.8rem; }
  .hero-desc { font-size: 0.95rem; }

  .services-grid { grid-template-columns: 1fr; }
  .reasons-grid { grid-template-columns: 1fr 1fr; }

  .flow-steps {
    flex-direction: column;
    gap: 24px;
  }
  .flow-steps::before {
    top: 0; bottom: 0;
    left: 40px; right: auto;
    width: 3px; height: auto;
  }
  .flow-step { display: flex; gap: 18px; text-align: left; }
  .step-circle { width: 60px; height: 60px; flex-shrink: 0; margin: 0; }

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

  .mobile-cta { display: block; }
  .section { padding: 60px 0; }

  body { padding-bottom: 76px; }
}

@media (max-width: 480px) {
  .hero-badges { flex-direction: column; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .reasons-grid { grid-template-columns: 1fr; }
}