:root {
  --bg: #f9f8f5;
  --ink: #111;
  --muted: rgba(0, 0, 0, 0.52);
  --soft: rgba(0, 0, 0, 0.58);
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.12);
  --grid: rgba(0, 0, 0, 0.06);
  --f-mincho: 'Shippori Mincho', serif;
  --f-gothic: 'Zen Kaku Gothic New', sans-serif;
  --f-en: 'Cormorant Garamond', serif;
  --nav-h: 72px;
  --max: 1120px;
  --pad: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-gothic);
  font-size: 12.5px;
  font-weight: 200;
  line-height: 2.1;
  letter-spacing: 0.04em;
}

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

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

button,
input,
select,
textarea {
  color: inherit;
  font: inherit;
}

button {
  border-radius: 0;
}

.wrap {
  width: min(calc(100% - var(--pad) * 2), var(--max));
  margin-inline: auto;
}

.narrow {
  max-width: 820px;
}

.page-main {
  padding-top: var(--nav-h);
}

.section-block {
  padding: 9rem 0;
}

.section-compact {
  padding-top: 0;
}

.section-en,
.work-tag,
.brand-sub,
.nav-link,
.footer-inner small,
.timeline-num,
.large-phone,
.phone-center a,
.tel,
.num {
  font-family: var(--f-en);
  font-weight: 300;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  min-height: var(--nav-h);
  background: var(--bg);
  border-bottom: 0.5px solid var(--line);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(calc(100% - var(--pad) * 2), var(--max));
  min-height: var(--nav-h);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

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

.brand-logo {
  display: block;
  width: 104px;
  height: auto;
  background: var(--bg);
}

.brand-mark {
  font-family: var(--f-mincho);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 0.32em;
}

.brand-sub {
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.2rem);
  white-space: nowrap;
}

.nav-link {
  position: relative;
  padding: 0.2rem 0;
  border-bottom: 0.5px solid transparent;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.nav-link::after {
  display: none;
}

.page-hero {
  padding: 10rem 0 9rem;
}

.page-hero-inner {
  max-width: 760px;
}

.section-en {
  margin: 0 0 1.3rem;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--f-mincho);
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0.08em;
}

h1 {
  font-size: clamp(28px, 4vw, 48px);
}

h2 {
  font-size: clamp(20px, 3vw, 32px);
}

h3 {
  font-size: 15px;
}

.page-sub {
  max-width: 560px;
  margin: 1.4rem 0 0;
  color: var(--muted);
}

.contact-mail {
  margin: 2rem 0 0;
  color: var(--muted);
  font-family: var(--f-en);
  font-size: 18px;
  font-weight: 300;
  letter-spacing: 0.08em;
}

.contact-mail a {
  border-bottom: 0.5px solid rgba(0, 0, 0, 0.12);
}

.contact-switch,
.form-intro {
  max-width: 560px;
  margin: 2rem 0 0;
  color: var(--muted);
}

.form-intro {
  margin: 0 0 3rem;
}

.home-hero {
  padding: 10rem 0 9rem;
}

.home-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 400px);
  align-items: center;
  gap: clamp(4rem, 8vw, 8rem);
}

.home-hero .section-en::before {
  content: '';
  display: block;
  width: 32px;
  height: 0.5px;
  margin-bottom: 1.4rem;
  background: var(--ink);
}

.home-copy h1 {
  max-width: 560px;
}

.home-lead {
  max-width: 470px;
  margin: 0;
  color: var(--muted);
}

.hero-actions {
  margin-top: 3rem;
}

.button-outline,
.submit-btn {
  display: inline-block;
  padding: 13px 28px;
  border: 0.5px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.14em;
  line-height: 1;
  text-align: center;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.button-outline:hover,
.submit-btn:hover {
  background: var(--ink);
  color: var(--bg);
}

.home-visual {
  width: min(100%, 400px);
  margin-left: auto;
}

.statement {
  max-width: 620px;
  margin-left: max(var(--pad), 10vw);
  font-family: var(--f-mincho);
  font-size: clamp(16px, 2.2vw, 22px);
  line-height: 2.35;
  letter-spacing: 0.08em;
}

.statement p {
  margin: 0 0 2rem;
}

.section-head {
  margin-bottom: 5rem;
}

.home-works-grid,
.works-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--grid);
  border: 0.5px solid var(--grid);
}

.home-work,
.work-card,
.card {
  display: block;
  background: var(--bg);
  padding: 2.8rem;
}

.works-grid .work-card {
  padding: 2rem 2rem 2.4rem;
}

.home-work-image,
.work-card-image {
  height: 260px;
  margin: 0 0 1.35rem;
  background: linear-gradient(135deg, rgba(17, 17, 17, 0.08), rgba(17, 17, 17, 0.02));
  overflow: hidden;
}

.home-work-image img,
.work-card-image img,
.project-main-image img,
.project-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.08);
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.home-work:hover img,
.work-card:hover img,
.project-gallery figure:hover img {
  transform: scale(1.02);
}

.work-tag {
  margin: 0 0 0.8rem;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.home-work h3,
.work-card h2 {
  font-size: 14px;
}

.home-work p:last-child,
.work-location {
  margin: 0.3rem 0 0;
  color: var(--muted);
  font-size: 11px;
}

.text-link-row {
  margin-top: 3rem;
}

.text-link {
  display: inline-block;
  border-bottom: 0.5px solid var(--ink);
  padding-bottom: 0.18rem;
  font-size: 11px;
  letter-spacing: 0.1em;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.text-link:hover {
  color: var(--muted);
  border-bottom-color: var(--line-strong);
}

.home-link-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--grid);
  border-top: 0.5px solid var(--line);
  border-bottom: 0.5px solid var(--line);
}

.home-link-grid a {
  padding: 2.8rem;
  background: var(--bg);
  font-family: var(--f-en);
  font-size: clamp(24px, 5vw, 50px);
  font-weight: 300;
  letter-spacing: 0.14em;
}

.home-link-grid a:hover {
  background: rgba(0, 0, 0, 0.03);
}

.home-link-grid a + a {
  border-left: 1px solid var(--grid);
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-bottom: 5rem;
  border-bottom: 0.5px solid var(--line);
}

.filter-btn {
  appearance: none;
  margin: 0 1.5rem -0.5px 0;
  padding: 0 0 1rem;
  border: 0;
  border-bottom: 0.5px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 11px;
  font-weight: 200;
  letter-spacing: 0.08em;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--ink);
  border-color: var(--ink);
}

.work-card.is-hidden {
  display: none;
}

.home-work,
.work-card {
  cursor: pointer;
}

.home-work:focus-visible,
.work-card:focus-visible {
  outline: 0.5px solid var(--ink);
  outline-offset: -0.5px;
}

.closing {
  padding: 7rem 0;
  text-align: center;
}

.closing p {
  max-width: 480px;
  margin: 0 auto 1.8rem;
  font-family: var(--f-mincho);
  font-size: clamp(16px, 2.5vw, 24px);
  line-height: 2;
}

.timeline {
  margin: 0;
  padding: 0 0 0 2rem;
  border-left: 0.5px solid rgba(0, 0, 0, 0.1);
  list-style: none;
}

.timeline-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 2rem;
  padding: 0 0 5rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-num {
  margin-top: -0.4rem;
  color: rgba(0, 0, 0, 0.22);
  font-size: 52px;
  line-height: 1;
}

.timeline-item h2,
.step h3 {
  margin-bottom: 0.6rem;
  font-size: 15px;
}

.timeline-item p,
.step p {
  max-width: 380px;
  margin: 0;
  color: rgba(0, 0, 0, 0.56);
  font-size: 12px;
}

.contact-cta {
  padding-top: 3rem;
  text-align: center;
  border-top: 0.5px solid var(--line);
}

.contact-cta p {
  margin: 0 0 1.2rem;
  font-family: var(--f-mincho);
  font-size: 20px;
}

.large-phone,
.phone-center a {
  display: block;
  font-size: 52px;
  letter-spacing: 0.03em;
  line-height: 1.1;
}

.contact-cta span,
.phone-center span {
  display: block;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 11px;
}

.message {
  max-width: 620px;
  margin-left: 18%;
  margin-bottom: 6rem;
  font-family: var(--f-mincho);
  font-size: clamp(16px, 2.2vw, 22px);
  line-height: 2.4;
  letter-spacing: 0.08em;
}

.message p {
  margin: 0 0 2.4rem;
}

.about-philosophy {
  min-height: calc(100vh - var(--nav-h));
  padding: 11rem 0;
  display: grid;
  align-items: center;
  text-align: center;
}

.about-philosophy-inner {
  max-width: 1040px;
}

.about-philosophy h1 {
  margin-bottom: 4.8rem;
  font-size: clamp(24px, calc(3.4vw - 4px), 40px);
  letter-spacing: 0.08em;
}

.about-philosophy-text {
  font-family: var(--f-mincho);
  font-size: clamp(12.5px, calc(1.75vw - 4px), 19px);
  line-height: 2.45;
  letter-spacing: 0.08em;
}

.about-philosophy-text p {
  margin: 0;
}

.about-philosophy-text p + p {
  margin-top: 0.5rem;
}

.company-info-section {
  padding-top: 2rem;
}

.company-info-head {
  margin-bottom: 5rem;
  text-align: center;
}

.company-info-head h2 {
  letter-spacing: 0.08em;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
  border-top: 0.5px solid var(--line);
}

.company-table th,
.company-table td {
  border-bottom: 0.5px solid var(--line);
  padding: 1.5rem 0;
  text-align: left;
  vertical-align: top;
  font-weight: 200;
}

.company-table th {
  width: 150px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.company-table td {
  font-size: 13px;
}

.company-table a {
  border-bottom: 0.5px solid rgba(0, 0, 0, 0.12);
}

.number-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 0.5px solid var(--line);
  border-bottom: 0.5px solid var(--line);
}

.number-grid div {
  padding: 3rem 0;
  text-align: center;
}

.number-grid div + div {
  border-left: 0.5px solid var(--line);
}

.number-grid span {
  display: block;
  font-family: var(--f-en);
  font-size: 48px;
  font-weight: 300;
  line-height: 1;
}

.number-grid p {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.phone-center {
  padding-top: 3rem;
  text-align: center;
}

.phone-center p {
  margin: 0 0 1.2rem;
}

.phone-center a,
.tel {
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 300;
}

.or-divider {
  width: min(calc(100% - var(--pad) * 2), var(--max));
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--muted);
  font-size: 11px;
}

.or-divider::before,
.or-divider::after {
  content: '';
  height: 0.5px;
  flex: 1;
  background: rgba(0, 0, 0, 0.1);
}

.form-wrap {
  max-width: 720px;
}

.contact-form {
  display: grid;
  gap: 0;
}

.form-field {
  padding: 1.2rem 0;
  border-bottom: 0.5px solid rgba(0, 0, 0, 0.1);
}

.form-field label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: none;
  border-radius: 0;
  outline: none;
  background: transparent;
  color: var(--ink);
  font-family: var(--f-gothic);
  font-size: 13px;
  font-weight: 300;
  line-height: 1.8;
  padding: 0;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(0, 0, 0, 0.36);
}

.checkbox-field {
  border-bottom: 0;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin: 0;
  cursor: pointer;
}

.checkbox-label input {
  width: auto;
  accent-color: var(--ink);
}

.checkbox-label span {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.submit-btn {
  margin-top: 3rem;
  padding: 14px 40px;
}

.journal-empty {
  min-height: 38vh;
  display: grid;
  place-items: center;
  text-align: center;
}

.journal-empty p {
  margin: 0 0 1.5rem;
  font-family: var(--f-mincho);
  font-size: clamp(18px, 3vw, 28px);
}

.project-hero h1 {
  max-width: 900px;
  font-size: clamp(26px, 4vw, 44px);
}

.project-main-image {
  height: min(60vw, 580px);
  min-height: 320px;
  margin-bottom: 5rem;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(17, 17, 17, 0.08), rgba(17, 17, 17, 0.02));
}

.project-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 5rem;
  align-items: start;
}

.project-text {
  max-width: 660px;
}

.project-text p {
  margin: 0;
  color: var(--soft);
}

.project-table th {
  width: 96px;
}

.project-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 5rem;
  background: var(--grid);
  border: 0.5px solid var(--grid);
}

.project-gallery figure {
  height: 240px;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
}

.site-footer {
  border-top: 0.5px solid var(--line);
  padding: 2.8rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 2rem;
  color: var(--muted);
  font-size: 11px;
}

.footer-left {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  align-items: center;
}

.footer-name {
  color: var(--ink);
  font-family: var(--f-mincho);
}

.footer-inner p,
.footer-inner small {
  margin: 0;
}

.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 820px) {
  :root {
    --nav-h: 112px;
    --pad: 20px;
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 0.85rem;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    gap: 1.2rem;
    padding-bottom: 0.2rem;
  }

  .page-main {
    padding-top: var(--nav-h);
  }

  .page-hero,
  .home-hero,
  .section-block {
    padding: 6rem 0;
  }

  .home-hero-inner,
  .home-works-grid,
  .works-grid,
  .project-layout,
  .project-gallery,
  .home-link-grid,
  .number-grid {
    grid-template-columns: 1fr;
  }

  .home-visual {
    margin: 2rem 0 0;
  }

  .statement,
  .message {
    margin-left: auto;
  }

  .home-link-grid a + a,
  .number-grid div + div {
    border-left: 0;
    border-top: 0.5px solid var(--line);
  }

  .timeline {
    padding-left: 1.2rem;
  }

  .timeline-item {
    grid-template-columns: 72px 1fr;
    gap: 1rem;
  }

  .timeline-num {
    font-size: 44px;
  }

  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
  }

  .company-table th {
    border-bottom: 0;
    padding-bottom: 0.2rem;
  }

  .company-table td {
    padding-top: 0;
  }

  .large-phone {
    font-size: clamp(38px, 12vw, 58px);
  }

  .project-gallery figure {
    height: 280px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }
}

@media (max-width: 520px) {
  .brand-logo {
    width: 92px;
  }

  .filter-btn {
    margin-right: 1rem;
  }

  .home-work,
  .work-card,
  .card {
    padding: 1.6rem;
  }

  .works-grid .work-card {
    padding: 1.4rem 1.4rem 1.8rem;
  }

  .home-work-image,
  .work-card-image {
    height: 230px;
  }

  .project-main-image {
    min-height: 240px;
  }

  .submit-btn {
    width: 100%;
  }
}