@charset "UTF-8";
/* =========================================================
   有限会社下里建設 コーポレートサイト
   style.css
   ========================================================= */

/* ---------- Google Fonts ---------- */
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;900&family=Oswald:wght@500;600;700&display=swap");

/* ---------- CSS Variables ---------- */
:root {
  --color-navy: #0e2a4a;
  --color-navy-dark: #081b30;
  --color-navy-light: #1c3f66;
  --color-orange: #f39800;
  --color-orange-dark: #d97f00;
  --color-yellow: #ffce00;
  --color-gray-900: #1c1c1c;
  --color-gray-700: #4a4a4a;
  --color-gray-500: #767676;
  --color-gray-300: #d9d9d9;
  --color-gray-100: #f5f6f8;
  --color-white: #ffffff;

  --font-base: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --font-accent: "Oswald", var(--font-base);

  --container-width: 1140px;
  --header-height: 84px;
  --header-height-scrolled: 64px;

  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-soft: 0 10px 30px rgba(14, 42, 74, 0.08);
  --shadow-strong: 0 20px 50px rgba(14, 42, 74, 0.18);
}

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

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

body {
  font-family: var(--font-base);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

h1,
h2,
h3,
h4 {
  line-height: 1.4;
  font-weight: 700;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Utility ---------- */
.pc-only {
  display: block;
}
.sp-only {
  display: none;
}

.section {
  padding: 100px 0;
}

.section--gray {
  background-color: var(--color-gray-100);
}

.section--navy {
  background-color: var(--color-navy);
  color: var(--color-white);
}

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

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-accent);
  font-size: 0.9rem;
  letter-spacing: 0.25em;
  color: var(--color-orange);
  font-weight: 600;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  letter-spacing: 0.05em;
  color: var(--color-navy);
}

.section--navy .section-title {
  color: var(--color-white);
}

.section-lead {
  margin-top: 18px;
  color: var(--color-gray-700);
  font-size: 1rem;
}

.section--navy .section-lead {
  color: rgba(255, 255, 255, 0.85);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 38px;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.08em;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base), color var(--transition-base);
  position: relative;
}

.btn--primary {
  background-color: var(--color-orange);
  color: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.btn--primary:hover {
  background-color: var(--color-orange-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-strong);
}

.btn--outline {
  border: 2px solid var(--color-white);
  color: var(--color-white);
}

.btn--outline:hover {
  background-color: var(--color-white);
  color: var(--color-navy);
  transform: translateY(-3px);
}

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

.btn--navy:hover {
  background-color: var(--color-navy-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-strong);
}

.btn--small {
  padding: 10px 24px;
  font-size: 0.85rem;
}

/* ---------- Scroll Reveal Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1), transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1), transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1), transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal-scale.is-visible {
  opacity: 1;
  transform: scale(1);
}

.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }
.delay-3 { transition-delay: 0.36s; }
.delay-4 { transition-delay: 0.48s; }
.delay-5 { transition-delay: 0.6s; }

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background-color: rgba(8, 27, 48, 0.35);
  backdrop-filter: blur(6px);
  transition: background-color var(--transition-base), height var(--transition-base), box-shadow var(--transition-base);
}

.header.is-scrolled {
  height: var(--header-height-scrolled);
  background-color: rgba(8, 27, 48, 0.96);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
}

.header-inner {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-white);
}

.logo-mark {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-accent);
  line-height: 1.2;
}

.logo-text .ja {
  display: block;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.logo-text .en {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--color-orange);
}

.gnav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.gnav-list {
  display: flex;
  gap: 34px;
}

.gnav-list a {
  position: relative;
  color: var(--color-white);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  padding: 8px 0;
}

.gnav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-orange);
  transition: width var(--transition-base);
}

.gnav-list a:hover::after,
.gnav-list a.is-active::after {
  width: 100%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 18px;
}

.header-tel {
  color: var(--color-white);
  text-align: right;
  line-height: 1.3;
}

.header-tel .num {
  display: block;
  font-family: var(--font-accent);
  font-size: 1.2rem;
  font-weight: 600;
}

.header-tel .label {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--color-orange);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 1100;
}

.nav-toggle span {
  position: absolute;
  left: 8px;
  right: 8px;
  height: 2px;
  background-color: var(--color-white);
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 22px; }
.nav-toggle span:nth-child(3) { top: 30px; }

.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle.is-active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--color-navy-dark);
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.6s ease;
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8, 27, 48, 0.88) 0%, rgba(14, 42, 74, 0.72) 55%, rgba(14, 42, 74, 0.5) 100%);
  z-index: 1;
}

.hero-slide svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  color: var(--color-white);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-accent);
  letter-spacing: 0.3em;
  font-size: 0.85rem;
  color: var(--color-orange);
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero-eyebrow::before {
  content: "";
  width: 40px;
  height: 2px;
  background-color: var(--color-orange);
}

.hero-title {
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.5;
  margin-bottom: 28px;
  text-shadow: 0 6px 30px rgba(0, 0, 0, 0.35);
}

.hero-title span {
  color: var(--color-orange);
}

.hero-desc {
  max-width: 560px;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 40px;
}

.hero-btns {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--color-white);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
}

.hero-scroll .line {
  width: 1px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.5);
  overflow: hidden;
  position: relative;
}

.hero-scroll .line::after {
  content: "";
  position: absolute;
  top: -40px;
  left: 0;
  width: 100%;
  height: 40px;
  background-color: var(--color-orange);
  animation: scrollLine 1.8s infinite ease-in-out;
}

@keyframes scrollLine {
  0% { top: -40px; }
  60% { top: 40px; }
  100% { top: 40px; }
}

.hero-dots {
  position: absolute;
  right: 32px;
  bottom: 36px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hero-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.4);
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.hero-dots button.is-active {
  background-color: var(--color-orange);
  transform: scale(1.3);
}

/* ---------- Page Hero (sub pages) ---------- */
.page-hero {
  position: relative;
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-white);
  background-color: var(--color-navy-dark);
  overflow: hidden;
}

.page-hero svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(8, 27, 48, 0.92), rgba(14, 42, 74, 0.75));
}

.page-hero-inner {
  position: relative;
  z-index: 2;
}

.page-hero-eyebrow {
  font-family: var(--font-accent);
  letter-spacing: 0.3em;
  color: var(--color-orange);
  font-size: 0.85rem;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.page-hero-title {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  letter-spacing: 0.06em;
}

.breadcrumb {
  margin-top: 18px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.75);
  display: flex;
  gap: 8px;
  justify-content: center;
}

.breadcrumb a:hover {
  color: var(--color-orange);
}

/* ---------- Message / Concept Section ---------- */
.concept {
  padding: 120px 0;
  text-align: center;
  position: relative;
  background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-100) 100%);
}

.concept-catch {
  font-size: clamp(1.5rem, 2.6vw, 2.3rem);
  color: var(--color-navy);
  line-height: 1.9;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.concept-catch em {
  font-style: normal;
  color: var(--color-orange);
  position: relative;
}

.concept-text {
  margin-top: 28px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-gray-700);
}

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

.strength-card {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: 44px 30px;
  text-align: center;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}

.strength-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-yellow));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.strength-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-strong);
}

.strength-card:hover::before {
  transform: scaleX(1);
}

.strength-num {
  font-family: var(--font-accent);
  font-size: 0.85rem;
  color: var(--color-orange);
  letter-spacing: 0.15em;
  margin-bottom: 18px;
  display: block;
}

.strength-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 22px;
}

.strength-title {
  font-size: 1.15rem;
  color: var(--color-navy);
  margin-bottom: 14px;
}

.strength-desc {
  font-size: 0.9rem;
  color: var(--color-gray-700);
}

/* ---------- Business cards (grid) ---------- */
.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.business-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.business-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-strong);
  border-color: transparent;
}

.business-card-media {
  height: 160px;
  background: linear-gradient(135deg, var(--color-navy), var(--color-navy-light));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.business-card-media svg {
  width: 68px;
  height: 68px;
  color: var(--color-white);
  position: relative;
  z-index: 2;
  transition: transform var(--transition-base);
}

.business-card:hover .business-card-media svg {
  transform: scale(1.15) rotate(-4deg);
}

.business-card-media::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  background: rgba(243, 152, 0, 0.18);
  border-radius: 50%;
  right: -60px;
  bottom: -80px;
}

.business-card-body {
  padding: 26px 26px 30px;
}

.business-card-num {
  font-family: var(--font-accent);
  font-size: 0.75rem;
  color: var(--color-orange);
  letter-spacing: 0.15em;
}

.business-card-title {
  font-size: 1.1rem;
  color: var(--color-navy);
  margin: 8px 0 12px;
}

.business-card-desc {
  font-size: 0.88rem;
  color: var(--color-gray-700);
}

/* ---------- Works / Fields ---------- */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.work-card {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  height: 280px;
  color: var(--color-white);
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-soft);
}

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

.work-card-bg svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.work-card:hover .work-card-bg svg {
  transform: scale(1.08);
}

.work-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(8, 27, 48, 0.92) 10%, rgba(8, 27, 48, 0.15) 75%);
  z-index: 1;
}

.work-card-body {
  position: relative;
  z-index: 2;
  padding: 26px;
}

.work-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  background-color: var(--color-orange);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.work-card-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.work-card-desc {
  margin-top: 8px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.85);
}

.works-note {
  margin-top: 50px;
  background-color: var(--color-white);
  border: 1px dashed var(--color-gray-300);
  border-radius: 8px;
  padding: 28px 32px;
  font-size: 0.88rem;
  color: var(--color-gray-700);
}

.works-note strong {
  color: var(--color-navy);
}

/* ---------- Flow (process steps) ---------- */
.flow-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: flow;
}

.flow-item {
  position: relative;
  background-color: var(--color-white);
  border-radius: 8px;
  padding: 34px 24px;
  text-align: center;
  box-shadow: var(--shadow-soft);
}

.flow-item::before {
  counter-increment: flow;
  content: counter(flow);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background-color: var(--color-navy);
  color: var(--color-white);
  font-family: var(--font-accent);
  font-weight: 600;
}

.flow-item-title {
  color: var(--color-navy);
  font-size: 1rem;
  margin-bottom: 10px;
}

.flow-item-desc {
  font-size: 0.85rem;
  color: var(--color-gray-700);
}

/* ---------- Company Table ---------- */
.company-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
  box-shadow: var(--shadow-soft);
  border-radius: 8px;
  overflow: hidden;
}

.company-table th,
.company-table td {
  padding: 22px 30px;
  text-align: left;
  border-bottom: 1px solid var(--color-gray-300);
  font-size: 0.94rem;
}

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

.company-table th {
  width: 220px;
  background-color: var(--color-gray-100);
  color: var(--color-navy);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.company-table td {
  color: var(--color-gray-700);
}

.license-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.license-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-navy);
  color: var(--color-white);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

.license-badge svg {
  width: 16px;
  height: 16px;
  color: var(--color-orange);
}

/* ---------- Map ---------- */
.map-wrap {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  height: 380px;
}

.map-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ---------- Contact ---------- */
.contact-panel {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: stretch;
}

.contact-card {
  background: linear-gradient(150deg, var(--color-navy), var(--color-navy-dark));
  color: var(--color-white);
  border-radius: 12px;
  padding: 50px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 26px;
  position: relative;
  overflow: hidden;
}

.contact-card::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(243, 152, 0, 0.15);
  right: -90px;
  top: -90px;
}

.contact-row {
  display: flex;
  align-items: center;
  gap: 18px;
  position: relative;
  z-index: 1;
}

.contact-row .icon {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-row .icon svg {
  width: 22px;
  height: 22px;
  color: var(--color-orange);
}

.contact-row .label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.7);
}

.contact-row .value {
  font-family: var(--font-accent);
  font-size: 1.5rem;
  font-weight: 600;
}

.contact-row .value.small {
  font-family: var(--font-base);
  font-size: 1rem;
  font-weight: 500;
}

.contact-hours {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
  position: relative;
  z-index: 1;
}

.contact-side {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  padding: 90px 0;
  text-align: center;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(45deg, rgba(243, 152, 0, 0.06) 0, rgba(243, 152, 0, 0.06) 2px, transparent 2px, transparent 22px);
}

.cta-band-inner {
  position: relative;
  z-index: 1;
}

.cta-band-title {
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  margin-bottom: 18px;
}

.cta-band-desc {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 34px;
}

.cta-btns {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.footer {
  background-color: var(--color-navy-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 70px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-white);
  margin-bottom: 18px;
}

.footer-logo .logo-mark {
  width: 38px;
  height: 38px;
}

.footer-desc {
  font-size: 0.85rem;
  line-height: 1.9;
  max-width: 320px;
}

.footer-heading {
  color: var(--color-white);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}

.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background-color: var(--color-orange);
}

.footer-links li {
  margin-bottom: 12px;
  font-size: 0.85rem;
}

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

.footer-contact li {
  margin-bottom: 14px;
  font-size: 0.85rem;
  display: flex;
  gap: 10px;
}

.footer-contact .tel {
  font-family: var(--font-accent);
  font-size: 1.2rem;
  color: var(--color-white);
}

.footer-bottom {
  text-align: center;
  font-size: 0.75rem;
  padding: 24px 0;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- Page Nav (prev/next simple) ---------- */
.page-fade-in {
  animation: pageFadeIn 0.9s ease;
}

@keyframes pageFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1180px) {
  :root {
    --container-width: 96%;
  }
}

@media (max-width: 960px) {
  .strengths-grid,
  .business-grid,
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .section {
    padding: 70px 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .gnav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(80%, 320px);
    background-color: var(--color-navy-dark);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 36px;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 1050;
  }

  .gnav.is-open {
    transform: translateX(0);
  }

  .gnav-list {
    flex-direction: column;
    gap: 26px;
    width: 100%;
  }

  .gnav-list a {
    font-size: 1.05rem;
  }

  .header-cta .header-tel.pc-only {
    display: none !important;
  }

  .nav-toggle {
    display: block;
  }

  .nav-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base);
    /* Must stay below .header's stacking context (z-index: 1000): .header has
       backdrop-filter, which makes it a containing block for its fixed-position
       descendants (.gnav, .nav-toggle). That means .gnav is compared against
       .nav-overlay as part of the .header stacking context, not on its own —
       an overlay z-index higher than .header's would paint (and intercept
       clicks) on top of the whole header, including the open menu links. */
    z-index: 900;
  }

  .nav-overlay.is-open {
    opacity: 1;
    visibility: visible;
  }

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

  .hero-btns .btn {
    justify-content: center;
    width: 100%;
  }

  .strengths-grid,
  .business-grid,
  .works-grid {
    grid-template-columns: 1fr;
  }

  .flow-list {
    grid-template-columns: 1fr;
  }

  .company-table th {
    width: 130px;
    padding: 16px;
    font-size: 0.82rem;
  }

  .company-table td {
    padding: 16px;
    font-size: 0.82rem;
  }

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

  .contact-card {
    padding: 36px 26px;
  }

  .contact-row .value {
    font-size: 1.2rem;
  }

  .map-wrap {
    height: 280px;
  }

  .page-hero {
    height: 220px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }

  .hero-desc {
    font-size: 0.9rem;
  }

  .concept-catch {
    font-size: 1.3rem;
  }
}