:root {
  --ink: #101114;
  --muted: #6d717b;
  --line: #ded8cd;
  --paper: #f7f4ee;
  --warm: #efe7da;
  --white: #ffffff;
  --indigo: #142c4b;
  --indigo-soft: #e9eef5;
  --red: #b2412e;
  --shadow: 0 24px 80px rgba(12, 20, 33, 0.14);
  --radius: 8px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fbfaf7;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

.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;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 76px;
  padding: 0 max(20px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.86);
  background: rgba(16, 17, 20, 0.9);
  backdrop-filter: blur(18px) saturate(140%);
}

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

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  color: #f0b4a7;
  background: rgba(255, 255, 255, 0.06);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 19px;
}

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

.brand strong {
  font-size: 15px;
  letter-spacing: 0;
}

.brand small {
  color: rgba(255, 255, 255, 0.52);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.site-nav a {
  transition: color 160ms ease;
}

.site-nav a:hover {
  color: var(--red);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 17px;
  height: 2px;
  margin: 5px auto;
  background: var(--white);
}

.section-pad {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 96px 0;
}

.hero {
  position: relative;
  width: 100%;
  max-width: none;
  min-height: calc(100svh - 76px);
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: 92px max(20px, calc((100vw - var(--max)) / 2)) 108px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(16, 17, 20, 0.98), rgba(16, 17, 20, 0.88) 58%, rgba(20, 44, 75, 0.86)),
    radial-gradient(circle at 78% 20%, rgba(178, 65, 46, 0.34), transparent 22rem),
    var(--ink);
}

.hero::after {
  position: absolute;
  right: -8vw;
  bottom: -22vw;
  width: 52vw;
  height: 52vw;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(var(--max), 100%);
  margin: 0 auto;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 72px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--red);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: clamp(66px, 11vw, 132px);
  line-height: 0.86;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 14px;
  font-size: 23px;
  line-height: 1.18;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 680px;
  margin-bottom: 18px;
  color: #f3eee7;
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 650;
  line-height: 1.15;
}

.hero-subcopy {
  max-width: 650px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 19px;
}

.signal-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 650px;
  margin-top: 28px;
}

.signal-row div {
  min-height: 92px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
}

.signal-row strong,
.signal-row span {
  display: block;
}

.signal-row strong {
  color: var(--white);
  font-size: 25px;
  line-height: 1.1;
}

.signal-row span {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.52);
  font-size: 13px;
  font-weight: 650;
  line-height: 1.3;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    border-color 160ms ease;
}

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

.button-primary {
  color: var(--ink);
  background: var(--white);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
}

.button-secondary {
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.04);
}

.button-secondary:hover {
  border-color: rgba(255, 255, 255, 0.36);
}

.bridge-panel {
  position: relative;
  min-height: 520px;
}

.bridge-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 520px;
  overflow: hidden;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(145deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035));
  background-size:
    36px 36px,
    36px 36px,
    auto;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.28);
}

.bridge-card::before {
  position: absolute;
  inset: 26% -18% auto auto;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(240, 180, 167, 0.18);
  border-radius: 50%;
  content: "";
}

.kanji {
  position: absolute;
  right: 26px;
  bottom: 18px;
  color: rgba(255, 255, 255, 0.06);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(160px, 18vw, 230px);
  line-height: 1;
}

.bridge-card-head {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.bridge-card-head strong {
  color: #f2b8aa;
}

.bridge-lanes {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
}

.bridge-lanes div {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 16px;
  align-items: center;
  min-height: 68px;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.16);
}

.bridge-lanes span {
  color: #f2b8aa;
  font-size: 12px;
  font-weight: 800;
}

.bridge-lanes p {
  margin: 0;
  color: var(--white);
  font-size: 18px;
  font-weight: 750;
}

.bridge-caption {
  position: relative;
  z-index: 1;
  max-width: 280px;
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.section-intro {
  max-width: 820px;
}

.section-intro.wide {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: 48px;
  align-items: end;
  max-width: none;
}

.section-intro.wide p:last-child,
.vision-copy p,
.why-layout p,
.about-grid p,
.contact-panel p {
  color: var(--muted);
  font-size: 18px;
}

.vision-section {
  display: grid;
  grid-template-columns: 0.78fr 1fr;
  gap: 72px;
  align-items: start;
  border-bottom: 1px solid var(--line);
}

.vision-copy {
  border-left: 2px solid var(--red);
  padding-left: 28px;
}

.muted-section {
  width: 100%;
  max-width: none;
  padding-right: max(20px, calc((100vw - var(--max)) / 2));
  padding-left: max(20px, calc((100vw - var(--max)) / 2));
  background: #efebe3;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
  margin-top: 52px;
}

.service-card {
  grid-column: span 4;
  display: flex;
  min-height: 500px;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(18, 20, 23, 0.1);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 1px 0 rgba(18, 20, 23, 0.03);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(18, 20, 23, 0.18);
  box-shadow: var(--shadow);
}

.service-card:nth-child(1),
.service-card:nth-child(2) {
  grid-column: span 6;
}

.service-card-feature {
  background:
    linear-gradient(135deg, rgba(23, 52, 93, 0.95), rgba(18, 20, 23, 0.95)),
    var(--indigo);
  color: var(--white);
}

.service-visual {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-bottom: 1px solid rgba(225, 217, 207, 0.8);
  filter: saturate(0.78) contrast(1.03);
  object-fit: cover;
  object-position: top center;
}

.service-card-feature p,
.service-card-feature .card-index {
  color: rgba(255, 255, 255, 0.72);
}

.service-card-feature .service-visual {
  border-bottom-color: rgba(255, 255, 255, 0.14);
}

.card-index {
  margin: 26px 28px 36px;
  color: var(--red);
  font-size: 13px;
  font-weight: 800;
}

.service-card h3,
.service-card p,
.service-card a {
  margin-right: 28px;
  margin-left: 28px;
}

.service-card p {
  color: var(--muted);
}

.service-card a {
  margin-top: auto;
  margin-bottom: 28px;
  color: var(--red);
  font-size: 14px;
  font-weight: 800;
}

.service-card-feature a {
  color: #ffffff;
}

.why-section {
  width: 100%;
  max-width: none;
  padding-right: max(20px, calc((100vw - var(--max)) / 2));
  padding-left: max(20px, calc((100vw - var(--max)) / 2));
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(18, 20, 23, 0.97), rgba(23, 52, 93, 0.93)),
    var(--ink);
}

.why-layout {
  display: grid;
  grid-template-columns: 0.9fr 1fr;
  gap: 72px;
  align-items: start;
}

.why-layout p {
  color: rgba(255, 255, 255, 0.72);
}

.proof-list {
  display: grid;
  gap: 12px;
}

.proof-list div {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 20px;
  align-items: center;
  min-height: 92px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
}

.proof-list span {
  color: #f1b6a8;
  font-weight: 800;
}

.proof-list p {
  margin: 0;
  color: var(--white);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
}

.about-section {
  border-bottom: 1px solid var(--line);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: 64px;
  align-items: start;
  margin-top: 34px;
}

.about-copy {
  max-width: 720px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-cloud span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: #343942;
  font-size: 14px;
  font-weight: 650;
}

.contact-section {
  padding-bottom: 48px;
}

.contact-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 6vw, 64px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 84% 10%, rgba(182, 70, 50, 0.11), transparent 18rem),
    linear-gradient(135deg, #ffffff, #f6efe6);
}

.contact-panel::after {
  position: absolute;
  right: 34px;
  bottom: -20px;
  color: rgba(23, 52, 93, 0.08);
  content: "橋";
  font-family: Georgia, "Times New Roman", serif;
  font-size: 180px;
  line-height: 1;
}

.contact-panel > * {
  position: relative;
  z-index: 1;
}

.contact-panel p {
  max-width: 720px;
}

.contact-panel .button-primary {
  color: var(--white);
  background: var(--ink);
}

.email-link {
  color: var(--indigo);
  font-weight: 800;
}

.site-footer {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 980px) {
  .hero-grid,
  .vision-section,
  .section-intro.wide,
  .why-layout,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .hero {
    min-height: auto;
    width: 100%;
    max-width: none;
  }

  .signal-row {
    max-width: none;
  }

  .bridge-panel,
  .bridge-card {
    min-height: 420px;
    height: 420px;
  }

  .service-card,
  .service-card-feature {
    grid-column: span 6;
  }
}

@media (max-width: 720px) {
  .site-header {
    width: calc(100% - 28px);
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: var(--ink);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    padding: 14px;
  }

  .section-pad {
    width: calc(100% - 28px);
    padding: 70px 0;
  }

  .hero {
    width: 100%;
    padding: 72px 14px 78px;
  }

  .muted-section,
  .why-section {
    padding-right: 14px;
    padding-left: 14px;
  }

  h1 {
    font-size: clamp(50px, 18vw, 72px);
  }

  h2 {
    font-size: clamp(31px, 10vw, 44px);
  }

  .hero-subcopy,
  .section-intro.wide p:last-child,
  .vision-copy p,
  .why-layout p,
  .about-grid p,
  .contact-panel p {
    font-size: 16px;
  }

  .signal-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 7px;
  }

  .signal-row div {
    min-height: 82px;
    padding: 12px 10px;
  }

  .signal-row strong {
    font-size: 21px;
  }

  .signal-row span {
    font-size: 11px;
  }

  .hero-actions,
  .contact-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .bridge-panel,
  .bridge-card {
    min-height: 340px;
    height: 340px;
  }

  .kanji {
    right: 20px;
    bottom: 12px;
    font-size: 140px;
  }

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

  .service-card,
  .service-card-feature {
    grid-column: span 1;
    min-height: 420px;
  }

  .card-index {
    margin-bottom: 30px;
  }

  .service-card h3,
  .service-card p,
  .service-card a,
  .card-index {
    margin-right: 24px;
    margin-left: 24px;
  }

  .proof-list div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .contact-panel::after {
    right: 10px;
    font-size: 120px;
  }
}