:root {
  --bg: #f7f8f5;
  --paper: #ffffff;
  --ink: #13201f;
  --muted: #5f6f6b;
  --line: #dce4df;
  --teal: #0a766d;
  --teal-dark: #064e49;
  --amber: #c9892b;
  --green-soft: #e7f0ea;
  --shadow: 0 24px 70px rgba(19, 32, 31, 0.12);
  --max: 1160px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    "Inter",
    "Noto Sans JP",
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    Meiryo,
    sans-serif;
  letter-spacing: 0;
  line-height: 1.75;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

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

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  transform: translateY(-140%);
  background: var(--ink);
  color: #fff;
  padding: 10px 14px;
  border-radius: var(--radius);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 248, 245, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(220, 228, 223, 0.75);
}

.nav-shell {
  width: min(var(--max), calc(100% - 40px));
  min-height: 74px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: 0;
}

.brand img {
  flex: 0 0 auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.nav-links a {
  position: relative;
  padding: 6px 0;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
}

.nav-toggle-line {
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 999px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.section-pad {
  padding: 104px 0;
}

.section-inner,
.hero-grid {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  padding-top: 88px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(380px, 1.06fr);
  align-items: center;
  gap: 72px;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 3.85rem);
  line-height: 1.04;
  font-weight: 760;
  letter-spacing: 0;
}

.hero-copy h1 span {
  display: block;
  white-space: nowrap;
}

.hero-copy,
.hero-media {
  min-width: 0;
}

.hero-copy p {
  margin: 28px 0 0;
  max-width: 640px;
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.16rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.2;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--teal);
  color: #fff;
  box-shadow: 0 12px 28px rgba(10, 118, 109, 0.24);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--teal-dark);
}

.button-secondary {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
}

.hero-media {
  margin: 0;
  position: relative;
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: 9% -4% -4% 9%;
  background: rgba(10, 118, 109, 0.11);
  border-radius: 48%;
  filter: blur(22px);
  z-index: -1;
}

.hero-media img {
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.intro-band {
  background: var(--ink);
  color: #eef5f1;
  padding: 54px 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(180px, 0.48fr) minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

.intro-grid h2,
.intro-grid p {
  margin: 0;
}

.intro-grid h2 {
  font-size: 1.15rem;
}

.intro-grid p {
  color: #cddbd5;
  max-width: 820px;
}

.section-heading {
  max-width: 760px;
}

.section-heading h2,
.contact h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.section-heading p,
.contact p {
  margin: 18px 0 0;
  color: var(--muted);
}

.service-list {
  margin-top: 54px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.service-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 24px;
  padding: 34px 34px 34px 0;
  border-bottom: 1px solid var(--line);
}

.service-item:nth-child(odd) {
  border-right: 1px solid var(--line);
}

.service-item:nth-child(even) {
  padding-left: 34px;
}

.item-index {
  color: var(--amber);
  font-weight: 800;
  font-size: 0.88rem;
}

.service-item h3,
.process-step span {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.45;
}

.service-item p,
.process-step p {
  margin: 12px 0 0;
  color: var(--muted);
}

.vision {
  background: var(--paper);
}

.vision-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.62fr) minmax(0, 1fr);
  gap: 72px;
  align-items: start;
}

.sticky-heading {
  position: sticky;
  top: 112px;
}

.process-rail {
  display: grid;
  gap: 18px;
}

.process-step {
  position: relative;
  padding: 26px 28px 26px 34px;
  background: linear-gradient(90deg, var(--green-soft), #fff);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.process-step::before {
  content: "";
  position: absolute;
  top: 26px;
  bottom: 26px;
  left: 16px;
  width: 3px;
  background: var(--teal);
  border-radius: 999px;
}

.process-step span {
  display: block;
  font-weight: 800;
}

.capability-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.74fr) minmax(0, 1fr);
  gap: 72px;
  align-items: start;
}

.capability-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: 0 16px 44px rgba(19, 32, 31, 0.06);
}

.capability-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.capability-list li {
  position: relative;
  padding-left: 24px;
  color: var(--ink);
}

.capability-list li::before {
  content: "";
  position: absolute;
  top: 0.74em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
}

.contact {
  background: var(--ink);
  color: #fff;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.55fr);
  gap: 56px;
  align-items: center;
}

.contact p {
  color: #cddbd5;
}

.contact-actions {
  display: grid;
  gap: 16px;
  justify-items: start;
}

.contact-actions p {
  margin: 0;
  font-size: 0.9rem;
}

.notice-hero {
  background: var(--paper);
  padding-top: 88px;
}

.notice-shell {
  max-width: 860px;
}

.notice-kicker {
  margin: 0 0 12px;
  color: var(--amber);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.notice-shell h1 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.notice-shell p {
  margin: 22px 0 0;
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.12rem);
}

.notice-section {
  padding-top: 84px;
}

.notice-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.55fr) minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}

.notice-grid h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.16;
  letter-spacing: 0;
}

.notice-grid p {
  margin: 16px 0 0;
  color: var(--muted);
}

.notice-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 16px 44px rgba(19, 32, 31, 0.06);
}

.notice-list {
  margin: 0;
}

.notice-list div {
  display: grid;
  grid-template-columns: minmax(120px, 0.34fr) minmax(0, 1fr);
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.notice-list div:first-child {
  padding-top: 0;
}

.notice-list dt {
  color: var(--muted);
  font-weight: 700;
}

.notice-list dd {
  margin: 0;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.notice-note {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}
.site-footer {
  background: #0f1918;
  color: #cddbd5;
  padding: 30px 0;
}

.footer-inner {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.footer-brand {
  color: #fff;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: flex-end;
  color: #9eb1aa;
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .nav-shell {
    min-height: 66px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 66px;
    right: 20px;
    left: 20px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 14px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 20px 50px rgba(19, 32, 31, 0.12);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: 11px 6px;
  }

  .section-pad {
    padding: 78px 0;
  }

  .hero {
    padding-top: 54px;
  }

  .hero-grid,
  .intro-grid,
  .vision-grid,
  .capability-grid,
  .notice-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .hero-copy h1 {
    font-size: clamp(2.25rem, 8.9vw, 3.25rem);
    line-height: 1.08;
  }

  .sticky-heading {
    position: static;
  }

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

  .service-item,
  .service-item:nth-child(even) {
    padding: 28px 0;
  }

  .service-item:nth-child(odd) {
    border-right: 0;
  }
}

@media (max-width: 560px) {
  .nav-shell,
  .section-inner,
  .hero-grid,
  .footer-inner {
    width: min(100% - 28px, 360px);
    margin-left: 14px;
    margin-right: auto;
  }

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

  .button {
    width: 100%;
  }

  .hero-media img {
    border-radius: 6px;
  }

  .service-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .capability-panel {
    padding: 24px;
  }

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

  .footer-meta {
    justify-content: flex-start;
  }

  .notice-panel {
    padding: 24px;
  }

  .notice-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}