:root {
  --ink: #202321;
  --muted: #747a76;
  --paper: #f8f8f5;
  --line: #dedfda;
  --accent: #7b887d;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Manrope, 'Noto Sans JP', sans-serif;
  font-weight: 400;
  line-height: 1.85;
}

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

img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.container {
  width: min(1160px, calc(100% - 72px));
  margin: auto;
}

/* ── Header ── */
.site-header {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4.4%;
  background: rgba(248, 248, 245, 0.95);
  position: relative;
  z-index: 5;
}

.brand {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.3;
}

.brand small {
  display: block;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--muted);
  margin-top: 6px;
}

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

.nav a {
  font-size: 11px;
  letter-spacing: 0.14em;
}

.nav a:hover,
.text-link:hover {
  color: var(--accent);
}

.nav .contact-nav {
  padding: 13px 20px;
  background: var(--ink);
  color: #fff;
}

.menu-button {
  display: none;
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 680px;
  height: calc(100svh - 88px);
  max-height: 920px;
  overflow: hidden;
  background: #343d39;
}

.hero img {
  height: 100%;
  filter: brightness(0.67);
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.42), transparent 75%);
}

.hero-copy {
  position: absolute;
  left: 9%;
  bottom: 17%;
  color: #fff;
  z-index: 1;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(32px, 4.4vw, 65px);
  font-weight: 400;
  letter-spacing: 0.13em;
  line-height: 1.65;
  margin: 24px 0;
}

.hero-copy p {
  font-size: 13px;
  letter-spacing: 0.13em;
  line-height: 2;
}

.hero-side {
  position: absolute;
  right: 4%;
  bottom: 6%;
  color: #fff;
  z-index: 1;
  font-size: 10px;
  letter-spacing: 0.2em;
}

/* ── Section ── */
.section {
  padding: 140px 0;
}

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

.section-heading h2 {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.1;
  margin: 8px 0 0;
}

.section-heading .jp {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.18em;
}

/* ── Concept ── */
.concept {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12%;
  align-items: center;
}

.concept h2 {
  font-size: clamp(26px, 3vw, 42px);
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.12em;
  margin: 24px 0;
}

.concept p {
  font-size: 14px;
  color: #626963;
  line-height: 2.7;
}

.concept img {
  height: 540px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 35px;
  border-bottom: 1px solid var(--ink);
  padding: 13px 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  margin-top: 22px;
}

.text-link span {
  font-size: 19px;
}

/* ── Works ── */
.works {
  background: #efefeb;
}

.work-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 55px 28px;
}

.work-card:nth-child(even) {
  margin-top: 80px;
}

.work-card img {
  aspect-ratio: 1.34;
  transition: transform 0.5s;
}

.image-clip {
  overflow: hidden;
  background: #ddd;
}

.work-card:hover img {
  transform: scale(1.04);
}

.work-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 17px;
}

.work-meta h3 {
  font-size: 17px;
  font-weight: 500;
  margin: 0;
}

.work-meta span {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.works-bottom {
  text-align: center;
  margin-top: 60px;
}

/* ── Service ── */
.service-list {
  border-top: 1px solid var(--line);
}

.service-row {
  display: grid;
  grid-template-columns: 80px 1fr 1.2fr 28px;
  gap: 30px;
  align-items: center;
  padding: 35px 0;
  border-bottom: 1px solid var(--line);
}

.service-row .num {
  font-size: 12px;
  color: var(--accent);
}

.service-row h3 {
  font-size: 21px;
  font-weight: 500;
  margin: 0;
}

.service-row p {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

.service-row .arrow {
  font-size: 23px;
}

/* ── About ── */
.about {
  background: #e6e9e4;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9%;
  align-items: center;
}

.about-grid img {
  height: 540px;
}

.about h2 {
  font-size: 40px;
  font-weight: 500;
  margin: 12px 0 30px;
}

.about h3 {
  font-size: 25px;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.08em;
}

.about p {
  font-size: 13px;
  color: #59635c;
  line-height: 2.6;
}

.area-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 20px 0 24px;
  padding: 0;
}

.area-tags li {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 5px 14px;
}

.about-license {
  font-size: 11px !important;
  color: var(--muted) !important;
  letter-spacing: 0.06em;
  line-height: 1.6 !important;
  margin-bottom: 28px;
}

/* ── Profile / Career Timeline ── */
.career-timeline {
  border-top: 1px solid var(--line);
}

.career-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 0 52px;
  padding: 38px 0;
  border-bottom: 1px solid var(--line);
}

.career-year {
  font-size: 12px;
  font-family: Manrope, sans-serif;
  color: var(--accent);
  letter-spacing: 0.1em;
  padding-top: 5px;
}

.career-content h3 {
  font-size: 16px;
  font-weight: 500;
  margin: 0 0 12px;
  letter-spacing: 0.04em;
}

.career-content p {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
  line-height: 2.2;
}

.career-item--current .career-year {
  color: var(--ink);
  font-weight: 600;
}

.career-item--current .career-content h3 {
  color: var(--ink);
}

/* ── Contact ── */
.contact {
  background: #232a26;
  color: white;
  text-align: center;
  padding: 115px 20px;
}

.contact h2 {
  font-size: clamp(46px, 7vw, 85px);
  font-weight: 400;
  letter-spacing: -0.05em;
  margin: 12px 0;
}

.contact p {
  font-size: 13px;
  color: #c2c9c3;
  line-height: 2.4;
}

.contact .text-link {
  border-color: white;
  margin-top: 35px;
  font-size: 14px;
}

/* ── Footer ── */
.footer {
  background: #1b211e;
  color: #cbd0cc;
}

.footer-map {
  width: 100%;
  height: 420px;
  overflow: hidden;
  filter: grayscale(30%) brightness(0.85);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  align-items: end;
  padding: 40px 0 50px;
}

.footer strong {
  color: white;
  letter-spacing: 0.1em;
}

.footer p,
.footer small {
  font-size: 11px;
  color: #9ca59f;
}

.footer small {
  letter-spacing: 0.1em;
}

/* ── Responsive: tablet ── */
@media (max-width: 800px) {
  .site-header {
    height: 72px;
    padding: 0 24px;
  }

  .brand {
    font-size: 15px;
  }

  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--paper);
    padding: 25px;
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
  }

  .nav.open {
    display: flex;
  }

  .menu-button {
    display: block;
    border: 0;
    background: none;
    font-size: 23px;
    cursor: pointer;
  }

  .container {
    width: calc(100% - 44px);
  }

  .hero {
    height: 75svh;
    min-height: 520px;
  }

  .hero-copy {
    left: 7%;
    bottom: 16%;
  }

  .hero h1 {
    font-size: clamp(29px, 7vw, 45px);
  }

  .section {
    padding: 85px 0;
  }

  .concept,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .concept img,
  .about-grid img {
    height: 350px;
  }

  .section-heading {
    margin-bottom: 35px;
  }

  .work-grid {
    gap: 32px 16px;
  }

  .work-card:nth-child(even) {
    margin-top: 35px;
  }

  .work-meta {
    display: block;
  }

  .work-meta h3 {
    font-size: 14px;
  }

  .work-meta span {
    font-size: 10px;
  }

  .service-row {
    grid-template-columns: 32px 1fr 24px;
    gap: 12px;
    padding: 25px 0;
  }

  .service-row h3 {
    font-size: 17px;
  }

  .service-row p {
    grid-column: 2 / 3;
    grid-row: 2;
  }

  .service-row .arrow {
    grid-column: 3;
    grid-row: 1;
  }

  .career-item {
    grid-template-columns: 48px 1fr;
    gap: 0 24px;
    padding: 28px 0;
  }

  .career-year {
    font-size: 11px;
  }

  .career-content h3 {
    font-size: 14px;
  }

  .footer-map {
    height: 300px;
  }

  .footer-inner {
    display: block;
  }

  .footer small {
    display: block;
    margin-top: 28px;
  }
}

/* ── Responsive: mobile ── */
@media (max-width: 480px) {
  .work-grid {
    grid-template-columns: 1fr;
  }

  .work-card:nth-child(even) {
    margin-top: 0;
  }

  .hero-copy p {
    font-size: 11px;
  }

  .concept h2 {
    font-size: 26px;
  }
}