:root {
  --color-bg: #f5efe6;
  --color-surface: #fffdf9;
  --color-surface-alt: #f0e9dc;
  --color-ink: #26221d;
  --color-ink-soft: #6b6157;
  --color-accent: #4a4f3a;
  --color-accent-deep: #363b29;
  --color-line-brand: #06c755;
  --color-border: #e2d8c4;
  --radius: 4px;
  --max-width: 1120px;
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", serif;
  --sans: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.85;
  padding-bottom: 76px; /* space for mobile sticky CTA */
}

a { color: var(--color-accent-deep); }

h1, h2, h3, h4 { line-height: 1.5; margin: 0 0 0.6em; font-family: var(--serif); font-weight: 600; }

.eyebrow {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 0.8em;
}

.eyebrow.center { display: block; text-align: center; }

.section-title {
  font-size: 1.5rem;
  text-align: center;
  margin-bottom: 0.4em;
}

.section-lead {
  text-align: center;
  color: var(--color-ink-soft);
  margin-top: 0;
  margin-bottom: 2.2rem;
  font-size: 0.92rem;
}

.link-arrow {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-ink);
  padding-bottom: 2px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(245, 239, 230, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.9rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo-block {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--color-ink);
  line-height: 1.3;
}

.logo {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}

.logo-note {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.66rem;
  color: var(--color-ink-soft);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-left: auto;
}

.menu-toggle span {
  display: block;
  height: 1.5px;
  background: var(--color-ink);
}

.nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-direction: column;
  padding: 0.5rem 1.2rem 1rem;
}

.nav.open { display: flex; }

.nav a {
  padding: 0.8rem 0;
  text-decoration: none;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}

.nav a:last-child { border-bottom: none; }

.site-header .btn-header-cta {
  display: none;
}

@media (min-width: 860px) {
  .menu-toggle { display: none; }
  .nav {
    display: flex;
    flex-direction: row;
    position: static;
    background: none;
    border: none;
    padding: 0;
    gap: 1.8rem;
    margin-right: 1.5rem;
  }
  .nav a { border: none; padding: 0; font-size: 0.85rem; }
  .site-header .btn-header-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: 0.6em 1.1em;
    font-size: 0.8rem;
  }
}

/* Buttons */
.btn {
  display: inline-block;
  border: none;
  border-radius: var(--radius);
  padding: 0.95em 2em;
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover { background: var(--color-accent-deep); }

.btn-header-cta {
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
}

.btn-header-cta:hover { background: var(--color-accent-deep); }

.btn-line {
  background: var(--color-line-brand);
  color: #fff;
  width: 100%;
  margin-top: 0.5rem;
}

.btn-note {
  background: var(--color-ink);
  color: #fff;
}

.btn-block { width: 100%; }

.btn[disabled] {
  background: #d8d0c0;
  color: #7a7266;
  cursor: not-allowed;
}

/* Hero */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.6rem 1.4rem 3rem;
}

.hero-grid {
  display: grid;
  grid-template-areas: "photo" "text";
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 0.95fr 1.15fr;
    grid-template-areas: "text photo";
    gap: 3.5rem;
  }
}

.hero-photo-wrap { grid-area: photo; }

.hero-photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center 60%;
  display: block;
  border-radius: var(--radius);
}

.hero-text { grid-area: text; }

.hero h1 {
  font-size: 2.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
}

.hero-brandmark {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin: 0 0 1rem;
}

.hero-rule {
  width: 44px;
  border: none;
  border-top: 2px solid var(--color-ink);
  margin: 0 0 1.3rem;
}

.hero-lead {
  color: var(--color-ink-soft);
  max-width: 30em;
  margin: 0 0 1.8rem;
  font-size: 0.96rem;
}

/* About */
.about {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.4rem 4rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .about-grid { grid-template-columns: 0.9fr 1.1fr; gap: 3.5rem; }
}

.about-text p { color: var(--color-ink-soft); font-size: 0.95rem; margin-bottom: 1.4rem; }

.about-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
  display: block;
  border-radius: var(--radius);
}

/* Service */
.service {
  background: var(--color-surface-alt);
  padding: 3.2rem 1.4rem;
}

.service .section-title { max-width: 480px; margin-left: auto; margin-right: auto; }

.service-row {
  max-width: var(--max-width);
  margin: 2.2rem auto 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem 1.4rem;
  text-align: center;
}

@media (min-width: 720px) {
  .service-row { grid-template-columns: repeat(4, 1fr); }
}

.service-icon {
  width: 46px;
  height: 46px;
  margin: 0 auto 0.9rem;
  border: 1px solid var(--color-ink);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink);
}

.service-item h4 { font-size: 0.98rem; margin-bottom: 0.4em; }
.service-item p { font-size: 0.8rem; color: var(--color-ink-soft); margin: 0; }

/* Categories — editorial numbered list */
.categories {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3.5rem 1.4rem 1rem;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

@media (min-width: 720px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
}

.card {
  padding: 2.1rem 1.4rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

@media (min-width: 720px) {
  .card {
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
  }
  .card:nth-child(3n) { border-right: none; }
}

.card-icon {
  font-family: var(--serif);
  font-size: 0.78rem;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
}

.card h3 { font-size: 1.08rem; font-weight: 600; }

.card-desc {
  color: var(--color-ink-soft);
  font-size: 0.9rem;
  flex-grow: 1;
}

.card-note {
  display: inline-block;
  margin-top: 0.5em;
  font-size: 0.82rem;
  color: var(--color-accent-deep);
}

.categories-cta {
  margin-top: 2.2rem;
  padding: 2rem 1.4rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  text-align: center;
}

.categories-cta p {
  margin: 0 0 1.2rem;
  color: var(--color-ink-soft);
  font-size: 0.92rem;
}

/* Works / Flow */
.works {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.4rem;
}

.works-head { max-width: 480px; margin: 0 auto 2.4rem; text-align: center; }
.works-head p { color: var(--color-ink-soft); font-size: 0.92rem; }

.works-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

@media (min-width: 720px) {
  .works-grid { grid-template-columns: repeat(3, 1fr); }
}

.works-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1.8rem 1.5rem;
  text-align: center;
}

.works-num {
  display: block;
  font-family: var(--serif);
  font-size: 0.85rem;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: 0.8rem;
}

.works-card h4 { font-size: 1rem; margin-bottom: 0.5em; }
.works-card p { font-size: 0.85rem; color: var(--color-ink-soft); margin: 0; }

/* Outside section */
.outside {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.4rem;
  text-align: center;
}

.outside p { font-size: 0.94rem; }

.outside-note {
  margin-top: 1rem;
  font-size: 0.82rem;
  color: var(--color-ink-soft);
}

/* FAQ */
.faq {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.4rem 3.5rem;
}

.faq-list details {
  border-bottom: 1px solid var(--color-border);
  padding: 1.1rem 0.1rem;
}

.faq-list details:first-child { border-top: 1px solid var(--color-border); }

.faq-list summary {
  font-weight: 600;
  cursor: pointer;
  font-size: 0.96rem;
}

.faq-list p {
  margin: 0.8em 0 0;
  color: var(--color-ink-soft);
  font-size: 0.9rem;
}

/* Footer */
.site-footer { border-top: 1px solid var(--color-border); }

.footer-band {
  position: relative;
  overflow: hidden;
  background: #dce3d4;
  padding: 3.5rem 1.4rem;
  text-align: center;
}

.footer-mountains {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
}

.footer-band-content { position: relative; z-index: 1; }

.footer-tagline {
  font-family: var(--serif);
  font-size: 1.3rem;
  color: #fff;
  margin: 0 0 0.5rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.25);
}

.footer-brandmark {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: #f2efe6;
  margin: 0 0 1.6rem;
}

.btn-footer-cta {
  background: #fff;
  color: var(--color-ink);
}

.btn-footer-cta:hover { background: var(--color-surface-alt); }

.footer-disclaimer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.4rem 0.2rem;
  color: var(--color-ink-soft);
  font-size: 0.82rem;
  text-align: center;
}

.footer-small {
  text-align: center;
  padding: 0.5rem 1.4rem 2.2rem;
  color: var(--color-ink-soft);
  font-size: 0.78rem;
}

/* Mobile sticky CTA */
.mobile-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.6rem 1rem calc(0.6rem + env(safe-area-inset-bottom));
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  z-index: 90;
}

@media (min-width: 768px) {
  .mobile-cta { display: none; }
  body { padding-bottom: 0; }
}