:root {
  --bg: #e7e8e4;
  --surface: #ffffff;
  --ink: #1b1f1d;
  --muted: #59625c;
  --line: #cfd4cf;
  --brand: #2f6b54;
  --brand-2: #4a8b71;
  --accent: #888f8a;
  --accent-2: #a8b0aa;
  --radius: 18px;
  --shadow: 0 16px 34px rgba(24, 30, 27, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Noto Sans JP", sans-serif;
  line-height: 1.75;
  background:
    radial-gradient(circle at 25% 18%, rgba(46, 57, 50, 0.06) 0, rgba(46, 57, 50, 0) 38%),
    radial-gradient(circle at 84% 74%, rgba(47, 107, 84, 0.09) 0, rgba(47, 107, 84, 0) 28%),
    repeating-linear-gradient(
      90deg,
      rgba(20, 24, 22, 0.028) 0,
      rgba(20, 24, 22, 0.028) 1px,
      transparent 1px,
      transparent 82px
    ),
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.08) 0,
      rgba(255, 255, 255, 0.08) 2px,
      transparent 2px,
      transparent 74px
    ),
    linear-gradient(160deg, #d8dad5 0%, #eceeea 45%, #e4e7e2 100%),
    var(--bg);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 5vw;
  border-bottom: 1px solid rgba(188, 197, 190, 0.8);
  background: rgba(231, 233, 228, 0.84);
  backdrop-filter: blur(10px);
}

.logo img {
  width: 188px;
  max-width: 45vw;
  display: block;
}

.site-nav ul {
  margin: 0;
  padding: 0;
  display: flex;
  list-style: none;
  gap: 24px;
}

.site-nav a {
  position: relative;
  font-size: 0.93rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--brand);
  transition: width 0.22s ease;
}

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

.menu-toggle {
  display: none;
  width: 34px;
  height: 26px;
  border: 0;
  background: transparent;
  padding: 0;
  position: relative;
  cursor: pointer;
}

.menu-toggle::before,
.menu-toggle::after,
.menu-toggle span {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--ink);
}

.menu-toggle::before {
  top: 3px;
}

.menu-toggle span {
  top: 12px;
}

.menu-toggle::after {
  bottom: 3px;
}

.hero {
  position: relative;
  min-height: min(84vh, 780px);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(23, 30, 27, 0.86), rgba(23, 30, 27, 0.46)),
    radial-gradient(circle at 80% 20%, rgba(60, 133, 102, 0.2), transparent 52%);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.orb-a {
  width: 230px;
  height: 230px;
  right: 16%;
  top: 12%;
  background: radial-gradient(circle at 30% 30%, rgba(181, 188, 183, 0.56), rgba(181, 188, 183, 0));
  animation: orbFloat 7s ease-in-out infinite;
}

.orb-b {
  width: 260px;
  height: 260px;
  left: 8%;
  bottom: 2%;
  background: radial-gradient(circle at 30% 30%, rgba(62, 132, 103, 0.36), rgba(62, 132, 103, 0));
  animation: orbFloat 9s ease-in-out infinite reverse;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1020px, 92vw);
  color: #f5f8f5;
  padding: clamp(32px, 5vw, 58px);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 28px;
  background:
    linear-gradient(145deg, rgba(38, 49, 44, 0.74), rgba(20, 28, 24, 0.4));
  box-shadow: 0 28px 52px rgba(17, 24, 21, 0.38);
  animation: cardIn 0.8s ease;
}

.hero-kicker {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #d2e3d8;
  font-family: "Cormorant Garamond", serif;
}

.hero h1 {
  margin: 16px 0 14px;
  font-size: clamp(1.85rem, 4vw, 3.4rem);
  line-height: 1.25;
  letter-spacing: 0.02em;
  font-family: "Shippori Mincho B1", serif;
  font-weight: 800;
}

.hero p {
  margin: 0;
  max-width: 710px;
}

.hero-cta {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 18px rgba(10, 24, 18, 0.25);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(130deg, var(--brand), var(--brand-2));
}

.btn-outline {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.58);
  background: rgba(255, 255, 255, 0.05);
}

.lead-keywords {
  width: min(1080px, 92vw);
  margin: 22px auto 0;
  display: grid;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--muted);
}

.trust-strip {
  width: min(1080px, 92vw);
  margin: 20px auto 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.trust-strip article {
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.82), rgba(244, 246, 243, 0.86));
  backdrop-filter: blur(2px);
  padding: 14px;
}

.trust-strip .num {
  margin: 0;
  color: var(--brand);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.trust-strip .label {
  margin: 4px 0 0;
  font-size: 0.82rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--muted);
}

.content-section {
  width: min(1080px, 92vw);
  margin: 70px auto;
}

.soft-bg {
  background:
    linear-gradient(145deg, rgba(238, 241, 237, 0.96), rgba(228, 232, 227, 0.96));
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 26px;
}

.section-head h2 {
  margin: 0;
  font-family: "Shippori Mincho B1", serif;
  font-size: clamp(1.45rem, 2.7vw, 2.2rem);
  line-height: 1.4;
  letter-spacing: 0.04em;
}

.section-en {
  margin: 0 0 8px;
  font-family: "Cormorant Garamond", serif;
  font-size: 0.95rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #6a796f;
}

.section-head h2::after {
  content: "";
  display: block;
  width: 66px;
  height: 3px;
  margin-top: 10px;
  background: linear-gradient(90deg, var(--brand), #7d9688);
  border-radius: 999px;
}

.section-head p {
  margin: 12px 0 0;
  color: var(--muted);
}

.business-list,
.strength-grid,
.works-grid,
.faq-list {
  margin-top: 30px;
  display: grid;
  gap: 16px;
}

.business-item,
.strength-card,
.works-card,
.faq-list details,
.contact-phone,
.contact-form,
.company-container {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, #fbfcfb, #f0f3ef);
  box-shadow: var(--shadow);
}

.business-item,
.strength-card,
.works-card {
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.business-item:hover,
.strength-card:hover,
.works-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 40px rgba(16, 33, 25, 0.16);
}

.business-item {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 16px;
  align-items: center;
  padding: 16px;
  position: relative;
  overflow: hidden;
}

.business-item::before {
  content: "";
  position: absolute;
  inset: auto auto 0 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(74, 139, 113, 0.55), transparent);
}

.business-item img {
  width: 112px;
  height: 112px;
  border-radius: 14px;
  object-fit: cover;
}

.business-item h3,
.strength-card h3,
.works-card h3 {
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
}

.business-item p,
.strength-card p,
.works-card p,
.faq-list p,
.company-details p,
footer p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.strength-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.strength-card {
  padding: 18px;
}

.strength-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 12px;
}

.works-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.works-card {
  overflow: hidden;
}

.works-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.works-card h3,
.works-card p {
  padding: 0 14px;
}

.works-card h3 {
  margin-top: 13px;
}

.works-card p {
  margin-bottom: 14px;
}

.faq-list details {
  padding: 12px 14px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
}

.contact-container {
  margin-top: 26px;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 18px;
}

.contact-phone,
.contact-form,
.company-container {
  padding: 18px;
}

.contact-phone p {
  margin: 0;
  font-weight: 700;
}

.phone-button {
  margin-top: 12px;
  display: inline-block;
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(130deg, var(--brand), var(--brand-2));
}

.contact-phone small {
  display: block;
  margin-top: 10px;
  color: var(--muted);
}

form {
  display: grid;
  gap: 10px;
}

label {
  font-size: 0.88rem;
  font-weight: 700;
}

.required {
  color: #cb3030;
}

input,
textarea,
button {
  width: 100%;
  border-radius: 10px;
  font: inherit;
}

input,
textarea {
  border: 1px solid #cfd6ce;
  padding: 10px;
  background: #fff;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: rgba(47, 139, 100, 0.7);
  box-shadow: 0 0 0 3px rgba(47, 139, 100, 0.18);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

button {
  border: 0;
  padding: 12px;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(130deg, var(--brand), var(--brand-2));
}

.company-name {
  margin: 0;
  font-size: 1.4rem;
  font-family: "Shippori Mincho B1", serif;
}

.ceo-name {
  margin: 6px 0 0;
  color: var(--muted);
}

.company-details h4 {
  margin: 18px 0 4px;
  font-size: 1rem;
}

footer {
  margin-top: 72px;
  border-top: 1px solid var(--line);
  padding: 30px 5vw 90px;
}

.footer-container {
  width: min(1080px, 92vw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-logo {
  width: 120px;
  height: auto;
}

footer p {
  margin: 0;
}

.floating-cta {
  position: fixed;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  width: min(460px, calc(100vw - 20px));
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  z-index: 1200;
}

.float-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border-radius: 999px;
  color: #fff;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.32);
  box-shadow: 0 15px 28px rgba(16, 38, 28, 0.38);
}

.float-btn.call {
  background: linear-gradient(130deg, #2d6f56, #4b9b7b);
}

.float-btn.form {
  background: linear-gradient(130deg, #636c66, #909a92);
}

.business-item,
.strength-card,
.works-card,
.faq-list details {
  opacity: 0;
  animation: staggerIn 0.7s ease forwards;
}

.business-item:nth-child(1),
.strength-card:nth-child(1),
.works-card:nth-child(1),
.faq-list details:nth-child(1) {
  animation-delay: 0.08s;
}

.business-item:nth-child(2),
.strength-card:nth-child(2),
.works-card:nth-child(2),
.faq-list details:nth-child(2) {
  animation-delay: 0.14s;
}

.business-item:nth-child(3),
.strength-card:nth-child(3),
.works-card:nth-child(3),
.faq-list details:nth-child(3) {
  animation-delay: 0.2s;
}

.business-item:nth-child(4),
.works-card:nth-child(4) {
  animation-delay: 0.26s;
}

.business-item:nth-child(5) {
  animation-delay: 0.3s;
}

@keyframes cardIn {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes orbFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

@keyframes staggerIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .site-nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 4vw;
    right: 4vw;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
  }

  .site-nav.active {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 10px;
  }

  .menu-toggle {
    display: block;
  }

  .trust-strip,
  .strength-grid,
  .works-grid,
  .contact-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero {
    min-height: 78vh;
  }

  .hero-content {
    width: 94vw;
    padding: 24px 18px;
  }

  .hero h1 {
    letter-spacing: 0;
  }

  .business-item {
    grid-template-columns: 1fr;
  }

  .business-item img {
    width: 100%;
    height: 180px;
  }

  .footer-container {
    flex-direction: column;
    align-items: flex-start;
  }
}