:root {
  color-scheme: light;
  --paper: #f8f4e6;
  --paper-deep: #eee6d3;
  --ink: #2b2722;
  --muted: #6d6257;
  --line: #ded3bf;
  --panel: #fffdf7;
  --panel-soft: #f3ede1;
  --charcoal: #2d2924;
  --charcoal-2: #4d463d;
  --accent: #836c40;
  --green: #29664e;
  --shadow: 0 22px 60px rgba(55, 47, 37, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.58), transparent 320px),
    var(--paper);
  background-image:
    url("data:image/svg+xml,%3Csvg width='120' height='120' viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.09'/%3E%3C/svg%3E"),
    linear-gradient(180deg, rgba(255, 255, 255, 0.58), transparent 320px);
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  line-height: 1.8;
  overflow-wrap: anywhere;
  line-break: strict;
}

a {
  color: inherit;
}

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

.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: fixed;
  inset: 0 0 auto;
  z-index: 20;
  background: rgba(255, 253, 247, 0.9);
  border-bottom: 1px solid rgba(222, 211, 191, 0.7);
  backdrop-filter: blur(14px);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 253, 247, 0.96);
  box-shadow: 0 10px 30px rgba(45, 41, 36, 0.08);
}

.header-inner {
  width: min(1120px, calc(100% - 32px));
  min-height: 70px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-link,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0;
}

.site-logo {
  width: auto;
  height: 42px;
  object-fit: contain;
}

.desktop-nav,
.site-footer nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.desktop-nav a,
.mobile-nav a,
.site-footer nav a {
  color: var(--charcoal-2);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.desktop-nav a:hover,
.mobile-nav a:hover,
.site-footer nav a:hover {
  color: var(--accent);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--charcoal);
  border-radius: 8px;
  background: var(--charcoal);
  color: #fffdf7;
}

.menu-button svg,
.button svg,
.text-link svg {
  width: 1.08em;
  height: 1.08em;
  flex: 0 0 auto;
}

.menu-glyph {
  font-size: 1.34rem;
  line-height: 1;
}

.lucide-ready .menu-glyph {
  display: none;
}

.mobile-nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto 14px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.mobile-nav a {
  display: block;
  padding: 12px;
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 88vh;
  padding: 116px 0 72px;
  overflow: hidden;
  border-bottom: 1px solid rgba(222, 211, 191, 0.74);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(248, 244, 230, 0.68), rgba(248, 244, 230, 0.95)),
    radial-gradient(circle at 50% 50%, rgba(131, 108, 64, 0.16), transparent 60%);
  pointer-events: none;
}

.hero-watermark {
  position: absolute;
  right: max(22px, calc((100vw - 1120px) / 2));
  bottom: 18px;
  width: min(42vw, 420px);
  aspect-ratio: 1;
  background: url("./yotsuguchi-llc-icon.jpg") center / cover no-repeat;
  opacity: 0.11;
  transform: rotate(-7deg);
}

.hero-inner,
.section,
.site-footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: start;
  max-width: 820px;
}

.hero-logo {
  width: min(70vw, 360px);
  max-width: 100%;
  height: auto;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(3rem, 10vw, 6.8rem);
  line-height: 1;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 720px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: clamp(1.18rem, 2.5vw, 1.58rem);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}

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

.button.primary {
  background: var(--charcoal);
  color: #fffdf7;
  box-shadow: var(--shadow);
}

.button.primary:hover {
  background: #191714;
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.76);
  color: var(--ink);
}

.button.secondary:hover {
  background: var(--panel);
}

.section {
  padding: 84px 0;
}

.section-heading {
  max-width: 740px;
  margin-bottom: 36px;
}

.section-heading h2,
.about-copy h2 {
  margin-bottom: 14px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.18;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.about-copy p {
  color: var(--muted);
  font-size: 1.04rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.service-card {
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.88);
  box-shadow: var(--shadow);
}

.contact-icon {
  width: 62px;
  height: 62px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border-radius: 50%;
  background: var(--panel-soft);
  color: var(--charcoal);
}

.contact-icon svg {
  width: 32px;
  height: 32px;
}

.service-logo {
  width: 132px;
  height: 132px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border: 1px solid rgba(222, 211, 191, 0.86);
  border-radius: 8px;
  background: var(--panel-soft);
  overflow: hidden;
}

.service-logo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.service-logo-light {
  background: #fffdf7;
}

.service-logo-light img {
  padding: 8px;
}

.service-logo-dark {
  border-color: rgba(45, 41, 36, 0.3);
  background: #202831;
}

.service-logo-dark img {
  object-fit: cover;
}

.status {
  width: fit-content;
  margin: 0 0 12px;
  padding: 3px 10px;
  border: 1px solid rgba(41, 102, 78, 0.18);
  border-radius: 999px;
  background: #e8f5ee;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 700;
}

.service-card h3 {
  margin-bottom: 10px;
  font-size: 1.5rem;
  line-height: 1.3;
}

.service-card p:not(.status) {
  margin-bottom: 26px;
  color: var(--muted);
}

.text-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
}

.text-link:hover {
  color: var(--ink);
}

.about-section {
  display: grid;
  grid-template-columns: minmax(240px, 0.82fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  padding-top: 74px;
  padding-bottom: 74px;
}

.about-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 360px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 253, 247, 0.9), rgba(238, 230, 211, 0.88));
  box-shadow: var(--shadow);
}

.about-visual img {
  width: min(78%, 300px);
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 50%;
  border: 5px solid rgba(255, 253, 247, 0.95);
  box-shadow: 0 18px 44px rgba(45, 41, 36, 0.14);
}

.about-copy p {
  margin-bottom: 14px;
}

.contact-section {
  padding-top: 74px;
}

.contact-panel {
  max-width: 680px;
  margin: 0 auto;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.92);
  box-shadow: var(--shadow);
  text-align: center;
}

.contact-panel .contact-icon {
  margin-left: auto;
  margin-right: auto;
}

.contact-panel h3 {
  margin-bottom: 10px;
  font-size: 1.34rem;
}

.contact-panel p {
  color: var(--muted);
}

.contact-button {
  max-width: 100%;
  overflow-wrap: anywhere;
}

.site-footer {
  display: grid;
  justify-items: center;
  gap: 22px;
  padding: 44px 0 50px;
  border-top: 1px solid rgba(222, 211, 191, 0.74);
  color: var(--muted);
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.86rem;
}

@media (max-width: 760px) {
  .desktop-nav {
    display: none;
  }

  .menu-button {
    display: inline-flex !important;
  }

  .header-inner {
    min-height: 62px;
  }

  .hero {
    min-height: 86vh;
    padding-top: 96px;
  }

  .hero-inner,
  .section-heading {
    justify-items: center;
    text-align: center;
  }

  .hero-copy {
    max-width: 20rem;
    font-size: 1.08rem;
  }

  .hero-logo {
    width: min(72vw, 250px);
  }

  .hero-actions {
    justify-content: center;
    width: 100%;
  }

  .button {
    width: 100%;
  }

  .section {
    padding: 56px 0;
  }

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

  .service-card {
    min-height: 0;
    padding: 24px;
  }

  .about-visual {
    min-height: 260px;
  }

  .contact-panel {
    padding: 24px;
  }

  .site-footer nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 22px;
  }
}