:root {
  --ink: #172019;
  --muted: #657067;
  --green: #304d3c;
  --green-deep: #1c3227;
  --lime: #b5c97a;
  --sand: #f1eee7;
  --paper: #fbfaf7;
  --line: #d9ddd7;
  --white: #fff;
  --font-sans: "Noto Sans JP", sans-serif;
  --font-en: "DM Sans", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

.demo-notice {
  min-height: 34px;
  padding: 6px 4vw;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  color: #e8eee9;
  background: #111713;
  font-size: 10px;
  letter-spacing: 0.06em;
}

.demo-notice span {
  padding: 2px 8px;
  color: #172019;
  background: var(--lime);
  font-weight: 700;
}

.demo-notice p {
  margin: 0;
}

.site-header {
  height: 84px;
  padding: 0 4vw;
  position: absolute;
  z-index: 20;
  top: 34px;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 34px;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  line-height: 1;
}

.brand-mark {
  width: 39px;
  height: 39px;
  display: grid;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50% 50% 46% 54% / 55% 44% 56% 45%;
  font-family: Georgia, serif;
  font-size: 21px;
  font-style: italic;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-family: Georgia, serif;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.brand small {
  margin-top: 6px;
  font-family: var(--font-en);
  font-size: 8px;
  letter-spacing: 0.32em;
}

.desktop-nav {
  margin-left: auto;
  display: flex;
  gap: 30px;
  font-size: 12px;
}

.desktop-nav a {
  position: relative;
}

.desktop-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -8px;
  height: 1px;
  background: currentColor;
  transition: right 0.3s ease;
}

.desktop-nav a:hover::after {
  right: 0;
}

.header-contact {
  height: 45px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  gap: 18px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  font-size: 12px;
  transition: 0.25s ease;
}

.header-contact:hover {
  color: var(--ink);
  background: var(--white);
}

.menu-button,
.mobile-nav {
  display: none;
}

.hero {
  height: max(720px, 100svh);
  min-height: 680px;
  position: relative;
  color: var(--white);
  overflow: hidden;
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(8, 15, 10, 0.82) 0%, rgba(8, 15, 10, 0.53) 38%, rgba(8, 15, 10, 0.07) 72%),
    linear-gradient(0deg, rgba(8, 15, 10, 0.35), transparent 45%);
}

.hero-content {
  width: min(1180px, 92vw);
  margin: 0 auto;
  padding-top: 230px;
  position: relative;
  z-index: 2;
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--green);
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.26em;
}

.eyebrow.light {
  color: var(--lime);
}

.hero h1 {
  margin: 0;
  font-size: clamp(44px, 5.4vw, 80px);
  line-height: 1.35;
  letter-spacing: 0.05em;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.18);
}

.hero h1 em {
  color: #d6dfaf;
  font-family: Georgia, "Yu Mincho", serif;
  font-weight: 400;
  font-style: normal;
}

.hero-copy {
  margin: 26px 0 34px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 15px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 34px;
}

.button {
  min-height: 57px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--ink);
  background: var(--lime);
}

.button-primary:hover {
  background: #cad99e;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding-bottom: 6px;
  border-bottom: 1px solid currentColor;
  font-size: 12px;
}

.light-link {
  color: var(--white);
}

.hero-caption {
  position: absolute;
  z-index: 2;
  right: 20px;
  bottom: 20px;
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--font-en);
  font-size: 8px;
  letter-spacing: 0.14em;
}

.scroll-cue {
  position: absolute;
  z-index: 2;
  left: 4vw;
  bottom: 28px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 8px;
  letter-spacing: 0.2em;
}

.scroll-cue i {
  width: 70px;
  height: 1px;
  position: relative;
  background: rgba(255, 255, 255, 0.4);
  overflow: hidden;
}

.scroll-cue i::after {
  content: "";
  width: 30px;
  height: 100%;
  position: absolute;
  background: var(--white);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  from { transform: translateX(-35px); }
  to { transform: translateX(75px); }
}

.section {
  padding: 120px max(5vw, calc((100vw - 1180px) / 2));
}

.intro {
  position: relative;
  display: grid;
  grid-template-columns: minmax(440px, 1.2fr) 0.8fr;
  gap: 9vw;
  background: var(--paper);
}

.section-number {
  position: absolute;
  top: 50px;
  left: max(5vw, calc((100vw - 1180px) / 2));
  color: #bec5bd;
  font-family: var(--font-en);
  font-size: 10px;
}

.intro h2,
.section-heading h2,
.area h2,
.company h2,
.contact h2 {
  margin: 0;
  font-size: clamp(28px, 3vw, 43px);
  line-height: 1.55;
  letter-spacing: 0.04em;
}

.intro h2 span {
  color: var(--green);
  border-bottom: 1px solid var(--green);
}

.intro-copy {
  padding-top: 40px;
  color: var(--muted);
  font-size: 14px;
}

.intro-copy p {
  margin: 0 0 20px;
}

.intro-copy small,
.area-content small,
.company-note,
.service-note {
  display: block;
  color: #89918a;
  font-size: 10px;
  line-height: 1.7;
}

.service {
  background: var(--sand);
}

.section-heading {
  margin-bottom: 55px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
}

.section-heading > p {
  max-width: 350px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid #cdd2ca;
  border-bottom: 1px solid #cdd2ca;
}

.service-card {
  min-height: 330px;
  padding: 32px 26px 24px;
  position: relative;
  border-right: 1px solid #cdd2ca;
  transition: background 0.25s ease, transform 0.25s ease;
}

.service-card:first-child {
  border-left: 1px solid #cdd2ca;
}

.service-card:hover {
  z-index: 1;
  background: var(--paper);
  transform: translateY(-6px);
  box-shadow: 0 18px 50px rgba(36, 51, 40, 0.08);
}

.service-icon {
  color: var(--green);
  font-family: Georgia, serif;
  font-size: 34px;
}

.card-number {
  margin: 55px 0 12px;
  color: #9ba49c;
  font-family: var(--font-en);
  font-size: 10px;
}

.service-card h3 {
  margin: 0 0 14px;
  font-size: 17px;
}

.service-card p:not(.card-number) {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.service-en {
  position: absolute;
  right: 22px;
  bottom: 20px;
  color: #a4aba4;
  font-family: var(--font-en);
  font-size: 8px;
  letter-spacing: 0.18em;
}

.service-note {
  margin-top: 18px;
}

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

.works-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 70px 34px;
}

.work-card-large {
  grid-row: span 2;
}

.image-wrap {
  position: relative;
  overflow: hidden;
  background: #dfe4de;
}

.work-card-large .image-wrap {
  aspect-ratio: 4 / 5;
}

.work-card:not(.work-card-large) .image-wrap {
  aspect-ratio: 4 / 2.65;
}

.image-wrap img {
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.work-card:hover img {
  transform: scale(1.025);
}

.image-wrap span {
  padding: 7px 10px;
  position: absolute;
  left: 12px;
  bottom: 12px;
  color: var(--white);
  background: rgba(16, 27, 19, 0.7);
  backdrop-filter: blur(6px);
  font-size: 9px;
}

.work-meta {
  padding: 18px 0 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
}

.work-meta h3 {
  margin: 0;
  font-size: 16px;
}

.work-meta p {
  margin: 0;
  color: #98a098;
  font-family: var(--font-en);
  font-size: 8px;
  letter-spacing: 0.12em;
}

.works-disclaimer {
  margin: 48px 0 0;
  padding: 14px 18px;
  color: #747d75;
  background: var(--sand);
  font-size: 10px;
}

.area {
  min-height: 630px;
  padding-top: 0;
  padding-bottom: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--green-deep);
  color: var(--white);
}

.area-visual {
  min-height: 630px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 55% 44%, rgba(181, 201, 122, 0.25), transparent 3%),
    radial-gradient(circle at 55% 44%, transparent 0 12%, rgba(181, 201, 122, 0.08) 12.3% 12.7%, transparent 13%),
    linear-gradient(135deg, #294435, #14271e);
}

.map-lines {
  position: absolute;
  inset: -20%;
  opacity: 0.35;
  background:
    repeating-radial-gradient(ellipse at 55% 45%, transparent 0 27px, rgba(218, 229, 204, 0.18) 28px 29px, transparent 30px 45px);
  transform: rotate(-13deg) scale(1.4);
}

.map-lines::before,
.map-lines::after {
  content: "";
  position: absolute;
  width: 120%;
  height: 1px;
  background: rgba(218, 229, 204, 0.18);
  transform: rotate(37deg);
}

.map-lines::before { top: 37%; left: -10%; }
.map-lines::after { top: 65%; left: -12%; transform: rotate(-24deg); }

.area-pin {
  position: absolute;
  top: 45%;
  left: 55%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.area-pin span {
  width: 18px;
  height: 18px;
  margin: 0 auto 14px;
  display: block;
  border: 5px solid var(--lime);
  border-radius: 50%;
  box-shadow: 0 0 0 12px rgba(181, 201, 122, 0.12);
}

.area-pin strong,
.area-pin small {
  display: block;
  font-family: var(--font-en);
}

.area-pin strong {
  font-size: 12px;
  letter-spacing: 0.2em;
}

.area-pin small {
  color: rgba(255, 255, 255, 0.55);
  font-size: 8px;
  letter-spacing: 0.16em;
}

.area-content {
  padding: 95px 8vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.area-content > p:not(.eyebrow) {
  max-width: 500px;
  margin: 30px 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.area-info {
  padding: 18px 0;
  display: flex;
  gap: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.area-info span {
  color: var(--lime);
  font-size: 11px;
}

.area-content small {
  margin: 10px 0 25px;
  color: rgba(255, 255, 255, 0.45);
}

.button-outline {
  width: fit-content;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.55);
}

.button-outline:hover {
  color: var(--green-deep);
  background: var(--white);
}

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

.company-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.company-list div {
  padding: 24px 10px;
  display: grid;
  grid-template-columns: 190px 1fr;
  border-bottom: 1px solid var(--line);
}

.company-list dt {
  color: var(--muted);
  font-size: 12px;
}

.company-list dd {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
}

.company-list a {
  padding-bottom: 2px;
  border-bottom: 1px solid currentColor;
}

.company-note {
  margin-top: 16px;
}

.contact {
  padding: 110px 5vw;
  color: var(--white);
  text-align: center;
  background:
    linear-gradient(rgba(23, 43, 32, 0.88), rgba(23, 43, 32, 0.88)),
    url("./assets/hero.jpg") center 58% / cover;
}

.contact-inner {
  max-width: 720px;
  margin: 0 auto;
}

.contact h2 {
  margin-bottom: 22px;
}

.contact-inner > p:not(.eyebrow) {
  margin: 0 0 32px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
}

.button-white {
  color: var(--green-deep);
  background: var(--white);
}

footer {
  padding: 40px 5vw 100px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 40px;
  color: rgba(255, 255, 255, 0.62);
  background: #101913;
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.12em;
}

.footer-brand {
  color: var(--white);
}

.footer-brand .brand-mark {
  width: 32px;
  height: 32px;
  font-size: 16px;
}

.footer-brand strong {
  font-size: 17px;
}

.floating-contact {
  width: 230px;
  min-height: 66px;
  padding: 11px 16px;
  position: fixed;
  z-index: 30;
  right: 18px;
  bottom: 18px;
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--white);
  background: rgba(28, 50, 39, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.24);
  box-shadow: 0 8px 28px rgba(15, 28, 20, 0.25);
  backdrop-filter: blur(8px);
}

.floating-icon {
  font-size: 23px;
}

.floating-contact small,
.floating-contact strong {
  display: block;
  line-height: 1.3;
}

.floating-contact small {
  color: rgba(255, 255, 255, 0.65);
  font-size: 8px;
}

.floating-contact strong {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.floating-contact b {
  margin-left: auto;
  color: var(--lime);
}

@media (max-width: 900px) {
  .site-header {
    height: 68px;
  }

  .desktop-nav,
  .header-contact {
    display: none;
  }

  .menu-button {
    width: 40px;
    height: 40px;
    margin-left: auto;
    padding: 11px 6px;
    display: grid;
    align-content: center;
    gap: 7px;
    color: inherit;
    background: transparent;
    border: 0;
  }

  .menu-button span {
    width: 100%;
    height: 1px;
    display: block;
    background: currentColor;
    transition: transform 0.25s ease;
  }

  .menu-button.is-open span:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-button.is-open span:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .mobile-nav {
    padding: 110px 8vw 35px;
    position: fixed;
    z-index: 15;
    inset: 0 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
    color: var(--white);
    background: rgba(19, 35, 26, 0.98);
    transform: translateY(-110%);
    transition: transform 0.35s ease;
  }

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

  .mobile-nav a {
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
    font-size: 14px;
  }

  .intro {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .intro-copy {
    padding-top: 0;
  }

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

  .service-card:nth-child(3) {
    border-left: 1px solid #cdd2ca;
  }

  .area-content {
    padding: 80px 6vw;
  }
}

@media (max-width: 640px) {
  .demo-notice {
    min-height: 39px;
    gap: 8px;
    font-size: 8px;
  }

  .demo-notice p {
    display: none;
  }

  .site-header {
    top: 39px;
    padding: 0 20px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 18px;
  }

  .brand strong {
    font-size: 19px;
  }

  .hero {
    height: 780px;
    min-height: 0;
  }

  .hero-image {
    object-position: 61% center;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(7, 14, 9, 0.75), rgba(7, 14, 9, 0.16)),
      linear-gradient(0deg, rgba(7, 14, 9, 0.65) 0%, rgba(7, 14, 9, 0.05) 70%);
  }

  .hero-content {
    width: auto;
    margin: 0 22px;
    padding-top: 210px;
  }

  .hero h1 {
    font-size: clamp(34px, 9.2vw, 42px);
    line-height: 1.45;
    letter-spacing: 0;
  }

  .hero-copy {
    max-width: 345px;
    font-size: 13px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 23px;
  }

  .button-primary {
    width: min(100%, 315px);
  }

  .scroll-cue {
    left: 22px;
  }

  .hero-caption {
    right: 12px;
    bottom: 12px;
    writing-mode: vertical-rl;
  }

  .section {
    padding: 82px 22px;
  }

  .section-number {
    top: 30px;
    left: 22px;
  }

  .intro {
    gap: 20px;
  }

  .intro h2,
  .section-heading h2,
  .area h2,
  .company h2,
  .contact h2 {
    font-size: 28px;
    line-height: 1.55;
  }

  .section-heading {
    margin-bottom: 35px;
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }

  .service-grid {
    grid-template-columns: 1fr;
    border-bottom: 0;
  }

  .service-card {
    min-height: 255px;
    border-left: 1px solid #cdd2ca;
    border-bottom: 1px solid #cdd2ca;
  }

  .card-number {
    margin-top: 34px;
  }

  .works-grid {
    grid-template-columns: 1fr;
    gap: 46px;
  }

  .work-card-large {
    grid-row: auto;
  }

  .work-card-large .image-wrap,
  .work-card:not(.work-card-large) .image-wrap {
    aspect-ratio: 4 / 3;
  }

  .work-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .area {
    min-height: 0;
    padding: 0;
    grid-template-columns: 1fr;
  }

  .area-visual {
    min-height: 310px;
  }

  .area-content {
    padding: 70px 22px 85px;
  }

  .area-info {
    gap: 25px;
  }

  .company-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .company-list dt {
    font-size: 10px;
  }

  .contact {
    padding: 85px 22px 105px;
  }

  .button-white {
    width: 100%;
  }

  footer {
    padding: 42px 22px 120px;
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .floating-contact {
    width: calc(100% - 24px);
    min-height: 60px;
    right: 12px;
    bottom: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}