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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  color: #333;
  background: #FAFAF5;
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
  transition: opacity .3s, color .3s;
}

a:hover {
  opacity: .8;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul {
  list-style: none;
}

button {
  font-family: 'Noto Sans JP', sans-serif;
}

select {
  appearance: none;
  -webkit-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='%23666' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px !important;
}

::selection {
  background: rgba(230, 126, 34, .2);
  color: var(--navy);
}

/* ===== VARIABLES ===== */
:root {
  --navy: #1A3352;
  --navy-dark: #122540;
  --navy-light: #2a4a6b;
  --orange: #E67E22;
  --orange-dark: #cf6e18;
  --orange-light: #f0a060;
  --cream: #FAFAF5;
  --cream-dark: #f0efe8;
  --text: #333;
  --text-light: #666;
  --text-muted: #999;
  --border: #e0ddd8;
  --border-light: #eee;
  --shadow: 0 4px 24px rgba(26, 51, 82, .08);
  --shadow-md: 0 8px 32px rgba(26, 51, 82, .1);
  --shadow-lg: 0 12px 48px rgba(26, 51, 82, .12);
  --shadow-orange: 0 8px 24px rgba(230, 126, 34, .3);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition: .3s cubic-bezier(.4, 0, .2, 1);
  --transition-slow: .6s cubic-bezier(.4, 0, .2, 1);
}

/* ===== SAMPLE BANNER ===== */
.sample-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--navy);
  color: #fff;
  text-align: center;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .05em;
  line-height: 1.5;
}

.sample-banner a {
  color: var(--orange);
  text-decoration: underline;
  font-weight: 600;
}

.sample-banner a:hover {
  color: var(--orange-light);
  opacity: 1;
}

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

.pc-only {
  display: inline;
}

@media (max-width: 768px) {
  .pc-only {
    display: none;
  }
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 36px;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 250, 245, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  transition: box-shadow .3s, background .3s;
}

.header.scrolled {
  box-shadow: var(--shadow);
  background: rgba(250, 250, 245, .97);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: .05em;
}

/* ===== DESKTOP NAV ===== */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-desktop a {
  font-size: 14px;
  font-weight: 500;
  color: var(--navy);
  position: relative;
  transition: color .3s;
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--orange);
  transition: width .3s;
}

.nav-desktop a:hover::after {
  width: 100%;
}

.nav-desktop a:hover {
  opacity: 1;
  color: var(--orange);
}

.nav-cta {
  background: var(--orange);
  color: #fff !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  transition: background .3s, transform .3s;
}

.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--orange-dark); opacity: 1 !important; transform: translateY(-1px); }

/* ===== HAMBURGER ===== */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 24px;
  position: relative;
  z-index: 1100;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--navy);
  position: absolute;
  left: 0;
  transition: .3s;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 0; }
.hamburger.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-desktop { display: none; }
  .hamburger { display: block; }
}

/* ===== MOBILE NAV ===== */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 85%;
  max-width: 380px;
  height: 100vh;
  background: var(--navy);
  z-index: 1050;
  transition: right .4s cubic-bezier(.4, 0, .2, 1);
  padding: 100px 32px 40px;
  overflow-y: auto;
}

.mobile-nav.open { right: 0; }

.mobile-nav-link {
  display: block;
  color: #fff;
  font-size: 17px;
  font-weight: 500;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  transition: padding-left .3s;
}

.mobile-nav-link:hover {
  padding-left: 8px;
  color: var(--orange);
  opacity: 1;
}

.mobile-nav-cta {
  display: block;
  background: var(--orange);
  color: #fff;
  text-align: center;
  padding: 16px;
  border-radius: 50px;
  font-weight: 600;
  margin-top: 24px;
  font-size: 16px;
  transition: background .3s;
}

.mobile-nav-cta:hover {
  background: var(--orange-dark);
  opacity: 1;
}

.mobile-nav-phone {
  margin-top: 32px;
  text-align: center;
  color: rgba(255, 255, 255, .7);
  font-size: 14px;
}

.mobile-nav-phone a {
  display: block;
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  margin-top: 8px;
  letter-spacing: .05em;
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .5);
  z-index: 1040;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}

.mobile-overlay.show { opacity: 1; pointer-events: auto; }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  margin-top: 36px;
}

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

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 8s ease;
}

.hero:hover .hero-bg img { transform: scale(1.03); }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,51,82,.85) 0%, rgba(26,51,82,.6) 50%, rgba(26,51,82,.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  padding: 120px 24px 80px;
}

.hero-sub {
  color: var(--orange);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .15em;
  margin-bottom: 20px;
}

.hero-title {
  color: #fff;
  font-size: clamp(32px, 5.5vw, 56px);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 24px;
  letter-spacing: .02em;
}

.hero-desc {
  color: rgba(255, 255, 255, .85);
  font-size: 17px;
  line-height: 2;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: all .3s;
  border: none;
  cursor: pointer;
  letter-spacing: .05em;
  font-family: 'Noto Sans JP', sans-serif;
}

.btn-primary {
  background: var(--orange);
  color: #fff;
}

.btn-primary:hover {
  background: var(--orange-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-orange);
  opacity: 1;
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, .5);
}

.btn-outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, .1);
  opacity: 1;
}

.btn-white {
  background: #fff;
  color: var(--navy);
}

.btn-white:hover {
  background: var(--cream);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  opacity: 1;
}

.btn-full {
  width: 100%;
}

/* ===== HERO STATS ===== */
.hero-stats {
  display: flex;
  gap: 48px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-num {
  color: #fff;
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
}

.hero-stat-unit {
  color: var(--orange);
  font-size: 18px;
  font-weight: 700;
  margin-left: 2px;
}

.hero-stat-label {
  display: block;
  color: rgba(255, 255, 255, .7);
  font-size: 13px;
  margin-top: 8px;
  letter-spacing: .05em;
}

/* ===== SECTION COMMON ===== */
.section {
  padding: 100px 0;
}

.section-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--orange);
  text-transform: uppercase;
  margin-bottom: 12px;
  text-align: center;
}

.section-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 900;
  color: var(--navy);
  text-align: center;
  margin-bottom: 20px;
  line-height: 1.4;
}

.section-lead {
  text-align: center;
  color: var(--text-light);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto 56px;
  line-height: 2;
}

/* ===== ABOUT ===== */
.about {
  background: #fff;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.about-card {
  background: var(--cream);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: transform .3s, box-shadow .3s;
  position: relative;
  overflow: hidden;
}

.about-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--orange); transform: scaleX(0); transition: transform .4s; }
.about-card:hover::before { transform: scaleX(1); }
.about-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.about-icon { width: 72px; height: 72px; margin: 0 auto 24px; }
.about-icon svg { width: 100%; height: 100%; }
.about-card h3 { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 16px; }
.about-card p { color: var(--text-light); font-size: 14px; line-height: 1.9; }

/* ===== PAINT COMPARISON ===== */
.paint {
  background: var(--cream);
}

.paint-chart {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  overflow-x: auto;
}

.paint-chart-svg {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  display: block;
  height: auto;
}

.paint-bar { transition: opacity .3s; cursor: pointer; }
.paint-bar:hover { opacity: .85; filter: brightness(1.05); }
.paint-note { text-align: center; color: var(--text-light); font-size: 13px; margin-top: 24px; line-height: 1.8; }

/* ===== SERVICES ===== */
.services {
  background: #fff;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-card {
  background: var(--cream);
  border-radius: var(--radius);
  padding: 40px 32px;
  border-left: 4px solid transparent;
  transition: all .3s;
  position: relative;
}

.service-card:hover { border-left-color: var(--orange); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.service-icon { width: 64px; height: 64px; margin-bottom: 20px; }
.service-icon svg { width: 100%; height: 100%; }
.service-card h3 { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 12px; }
.service-card > p { color: var(--text-light); font-size: 14px; line-height: 1.9; margin-bottom: 20px; }
.service-list { display: flex; flex-wrap: wrap; gap: 8px; }

.service-list li {
  background: #fff;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  color: var(--navy);
  font-weight: 500;
  border: 1px solid var(--border);
  transition: border-color .3s, background .3s;
}

.service-list li:hover { border-color: var(--orange); background: rgba(230, 126, 34, .05); }

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

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.work-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
}

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

.work-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.work-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}

.work-card:hover .work-img img { transform: scale(1.05); }

.work-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--orange);
  color: #fff;
  padding: 4px 16px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .03em;
}

.work-info {
  padding: 24px;
}

.work-info h3 { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 8px; line-height: 1.5; }
.work-meta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 12px; }
.work-meta span { font-size: 12px; color: var(--text-light); background: var(--cream); padding: 4px 12px; border-radius: 50px; }
.work-info > p { font-size: 13px; color: var(--text-light); line-height: 1.8; margin-bottom: 16px; }
.work-result { display: flex; align-items: center; gap: 12px; padding-top: 16px; border-top: 1px solid var(--border); }
.work-result-label { font-size: 12px; color: var(--text-light); font-weight: 500; }
.work-result-value { font-size: 20px; font-weight: 900; color: var(--orange); }

/* ===== WARRANTY ===== */
.warranty {
  background: #fff;
}

.warranty-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
  background: linear-gradient(135deg, var(--cream) 0%, var(--cream-dark) 100%);
  border-radius: var(--radius); padding: 60px;
}
.warranty-content .section-label { text-align: left; }
.warranty-content p { color: var(--text-light); font-size: 15px; line-height: 2; margin-bottom: 32px; }
.warranty-tiers { display: flex; flex-direction: column; gap: 12px; }

.warranty-tier {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fff;
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--orange);
  transition: transform .3s, box-shadow .3s;
}

.warranty-tier:hover { transform: translateX(4px); box-shadow: var(--shadow); }
.warranty-tier-name { font-size: 15px; font-weight: 600; color: var(--navy); }
.warranty-tier-years { font-size: 15px; font-weight: 700; color: var(--orange); }
.warranty-visual { display: flex; justify-content: center; }
.warranty-visual svg { width: 100%; max-width: 280px; height: auto; }

/* ===== FLOW ===== */
.flow {
  background: var(--cream);
}

.flow-timeline {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}

.flow-timeline::before {
  content: ''; position: absolute; left: 32px; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, var(--orange), var(--navy));
}

.flow-step {
  display: flex;
  gap: 32px;
  margin-bottom: 40px;
  position: relative;
}

.flow-step:last-child { margin-bottom: 0; }

.flow-num {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  position: relative;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(26, 51, 82, .2);
  transition: transform .3s;
}

.flow-step:hover .flow-num { transform: scale(1.08); }
.flow-step:nth-child(odd) .flow-num { background: var(--orange); box-shadow: 0 4px 12px rgba(230,126,34,.25); }

.flow-body {
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 24px 28px;
  flex: 1;
  box-shadow: var(--shadow);
  transition: box-shadow .3s;
}

.flow-step:hover .flow-body { box-shadow: var(--shadow-md); }
.flow-body h3 { font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.flow-body p { font-size: 14px; color: var(--text-light); line-height: 1.8; }

/* ===== COMPANY ===== */
.company {
  background: #fff;
}

.company-table {
  max-width: 800px;
  margin: 0 auto;
}

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

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

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

.company-table th {
  text-align: left;
  padding: 18px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  width: 160px;
  vertical-align: top;
  background: var(--cream);
}

.company-table td {
  padding: 18px 24px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

.company-table td a { color: var(--orange); font-weight: 600; }
.company-table td a:hover { text-decoration: underline; opacity: 1; }

/* ===== CONTACT ===== */
.contact {
  background: var(--cream);
}

.contact-grid {
  max-width: 700px;
  margin: 0 auto;
}

.contact-phone {
  text-align: center;
  background: #fff;
  border-radius: var(--radius);
  padding: 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow);
  border: 2px solid transparent;
  transition: border-color .3s;
}

.contact-phone:hover { border-color: var(--orange); }
.contact-phone-label { font-size: 14px; color: var(--text-light); margin-bottom: 8px; }

.contact-phone-num {
  font-size: 36px;
  font-weight: 900;
  color: var(--navy);
  letter-spacing: .05em;
  display: inline-block;
  transition: color .3s;
}

.contact-phone-num:hover { color: var(--orange); opacity: 1; }
.contact-phone-hours { font-size: 13px; color: var(--text-light); margin-top: 8px; }

.contact-form {
  background: #fff;
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
}

.req {
  background: var(--orange);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 50px;
  margin-left: 6px;
  font-weight: 500;
  vertical-align: middle;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 15px;
  background: var(--cream);
  transition: border-color .3s, box-shadow .3s;
  color: var(--text);
}

.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(230, 126, 34, .12);
  background: #fff;
}

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

/* ===== CTA ===== */
.cta {
  background: linear-gradient(135deg, var(--navy) 0%, #244060 100%);
  padding: 80px 0; text-align: center; position: relative; overflow: hidden;
}

.cta::before { content: ''; position: absolute; top: -50%; right: -20%; width: 400px; height: 400px; border-radius: 50%; background: rgba(230,126,34,.08); }
.cta::after { content: ''; position: absolute; bottom: -30%; left: -10%; width: 300px; height: 300px; border-radius: 50%; background: rgba(255,255,255,.04); }

.cta-title {
  color: #fff;
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 900;
  margin-bottom: 20px;
  line-height: 1.5;
  position: relative;
  z-index: 1;
}

.cta-desc {
  color: rgba(255, 255, 255, .7);
  font-size: 16px;
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--navy);
  color: rgba(255, 255, 255, .7);
  padding: 60px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.footer-brand p {
  font-size: 14px;
  margin-top: 16px;
  line-height: 1.9;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-nav-col h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: .05em;
}

.footer-nav-col a {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
  margin-bottom: 10px;
  transition: color .3s, padding-left .3s;
}

.footer-nav-col a:hover {
  color: var(--orange);
  opacity: 1;
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13px;
}

.footer-bottom a { color: var(--orange); }
.footer-bottom a:hover { text-decoration: underline; opacity: 1; }

/* ===== ANIMATIONS ===== */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Staggered animation delays */
.about-grid .fade-in:nth-child(2) { transition-delay: .1s; }
.about-grid .fade-in:nth-child(3) { transition-delay: .2s; }
.services-grid .fade-in:nth-child(2) { transition-delay: .1s; }
.services-grid .fade-in:nth-child(3) { transition-delay: .2s; }
.services-grid .fade-in:nth-child(4) { transition-delay: .3s; }
.works-grid .fade-in:nth-child(2) { transition-delay: .15s; }
.works-grid .fade-in:nth-child(3) { transition-delay: .3s; }

/* ===== RESPONSIVE: TABLET ===== */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

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

  .works-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .warranty-inner {
    grid-template-columns: 1fr;
    padding: 40px 24px;
  }

  .warranty-visual {
    order: -1;
  }

  .warranty-content .section-title {
    text-align: center;
  }

  .warranty-content .section-label {
    text-align: center;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* ===== RESPONSIVE: MOBILE ===== */
@media (max-width: 600px) {
  .sample-banner {
    font-size: 11px;
    padding: 6px 12px;
  }

  .header-inner {
    height: 60px;
  }

  .logo-text {
    font-size: 18px;
  }

  .hero {
    min-height: auto;
    padding: 0;
  }

  .hero-content {
    padding: 100px 20px 60px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-num {
    font-size: 36px;
  }

  .hero-actions {
    flex-direction: column;
  }

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

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 22px;
  }

  .section-lead {
    font-size: 14px;
    margin-bottom: 40px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-phone {
    padding: 28px 20px;
  }

  .contact-phone-num {
    font-size: 28px;
  }

  .contact-form {
    padding: 28px 20px;
  }

  .flow-timeline::before {
    left: 24px;
  }

  .flow-num {
    width: 48px;
    height: 48px;
    font-size: 14px;
  }

  .flow-step {
    gap: 20px;
  }

  .flow-body {
    padding: 20px;
  }

  .paint-chart {
    padding: 16px;
    overflow-x: auto;
  }

  .paint-chart-svg {
    min-width: 600px;
  }

  .company-table th {
    width: 120px;
    padding: 14px 12px;
    font-size: 13px;
  }

  .company-table td {
    padding: 14px 12px;
    font-size: 13px;
  }

  .footer-nav {
    grid-template-columns: 1fr;
  }

  .cta {
    padding: 60px 0;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .cta-actions .btn {
    width: 100%;
    max-width: 300px;
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .fade-in { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}