:root {
  --color-bg: #f7f7f4;
  --color-surface: #ffffff;
  --color-muted: #eef1e8;
  --color-text: #1c1b19;
  --color-text-soft: #5c584f;
  --color-primary: #5c8a2e;
  --color-primary-dark: #486e22;
  --color-accent: #14140f;
  --color-border: #e3e1d8;
  --color-gold: #d8b48c;
  --radius: 14px;
  --shadow: 0 12px 30px -12px rgba(20, 20, 15, 0.28);
  --max-width: 1120px;
  font-size: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3 {
  font-family: "Shippori Mincho", "Noto Sans JP", serif;
  margin: 0;
  line-height: 1.4;
  color: var(--color-text);
}

.only-mobile { display: none; }

/* Offset anchor-jump targets so headings aren't hidden under the sticky header */
#top, #about, #services, #works, #flow, #access, #contact,
#case1, #case2, #case3, #case4, #case5, #case6, #case7 {
  scroll-margin-top: 88px;
}

/* Top bar */
.top-bar {
  background: var(--color-accent);
  color: #f4efe4;
  font-size: 0.8rem;
}
.top-bar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 6px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top-bar__tel { font-weight: 700; letter-spacing: 0.02em; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}
.brand__logo {
  height: 40px;
  width: auto;
  background: #fff;
  border-radius: 8px;
  padding: 4px 10px;
}
.brand--footer .brand__logo {
  height: 52px;
  padding: 6px 14px;
  box-shadow: 0 8px 20px -8px rgba(0,0,0,0.5);
}
.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.92rem;
}
.nav a { color: var(--color-text-soft); transition: color .2s; }
.nav a:hover { color: var(--color-primary); }
.nav__cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 700;
}
.nav__cta:hover { background: var(--color-primary-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 24px 88px;
  color: #fff;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 12%, rgba(92,138,46,0.35), transparent 55%),
    linear-gradient(160deg, rgba(20,20,15,0.88), rgba(20,20,15,0.68)),
    linear-gradient(135deg, #1c1b19, #0e0e0b);
  z-index: -1;
}
.hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}
.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  color: var(--color-gold);
  margin-bottom: 18px;
}
.hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: #fff;
  margin-bottom: 24px;
}
.hero__lead {
  max-width: 560px;
  color: #e7e5df;
  margin-bottom: 36px;
  font-size: 1.02rem;
}
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform .15s, background .2s, border-color .2s, color .2s;
  border: 2px solid transparent;
  cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-dark); }
.btn--ghost { border-color: rgba(255,255,255,0.6); color: #fff; }
.btn--ghost:hover { background: rgba(255,255,255,0.12); }
.btn--block { width: 100%; }

/* Strip */
.strip { background: var(--color-accent); color: #f4efe4; }
.strip__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 22px 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  text-align: center;
}
.strip__item p { margin: 4px 0 0; font-size: 0.92rem; }
.strip__num {
  font-family: "Shippori Mincho", serif;
  color: var(--color-gold);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

/* Sections */
.section { padding: 88px 24px; }
.section--muted { background: var(--color-muted); }
.section__inner { max-width: var(--max-width); margin: 0 auto; }
.section__inner--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.section__label {
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
  margin-bottom: 10px;
}
.section__label--light { color: var(--color-gold); }
.section__title { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 18px; }
.section__title--light { color: #fff; }
.section__lead {
  color: var(--color-text-soft);
  max-width: 640px;
  margin-bottom: 40px;
}
.section__lead--light { color: #e7e5df; }
.section__text { color: var(--color-text-soft); margin-bottom: 28px; }

.about-logo {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.about-logo img {
  max-width: 70%;
  max-height: 70%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.media-placeholder {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  background: repeating-linear-gradient(45deg, #efe6d5, #efe6d5 12px, #e6d9c1 12px, #e6d9c1 24px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-soft);
  font-size: 0.9rem;
  text-align: center;
  border: 1px solid var(--color-border);
}

.info-list__row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.94rem;
}
.info-list__row dt { color: var(--color-text-soft); }
.info-list__row dd { margin: 0; }

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
}
.card__icon { font-size: 1.8rem; margin-bottom: 14px; }
.card h3 { font-size: 1.08rem; margin-bottom: 10px; }
.card p { color: var(--color-text-soft); font-size: 0.92rem; margin: 0; }

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.gallery__item {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  background: var(--color-muted);
  border: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-soft);
  font-size: 0.88rem;
}

/* Works teaser (top page) */
.works-teaser {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.works-teaser__card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .15s;
}
.works-teaser__card:hover { transform: translateY(-3px); }
.works-teaser__compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--color-border);
}
.works-teaser__compare img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.works-teaser__body { padding: 18px 20px; }
.works-teaser__category {
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.works-teaser__title {
  font-size: 1.02rem;
  margin: 6px 0 0;
}
.works-teaser__more { text-align: center; }

/* Case grid (works listing page) */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.case-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.case-card__link { display: block; color: inherit; }
.case-card__compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--color-border);
}
.case-card__compare-item {
  position: relative;
}
.case-card__compare img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}
.case-card__compare-label {
  position: absolute;
  left: 10px;
  bottom: 8px;
  font-size: 0.68rem;
  font-weight: 700;
  color: #fff;
  background: rgba(20,20,15,0.62);
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}
.case-card__body { padding: 22px 24px; }
.case-card__category {
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.case-card__title {
  font-size: 1.15rem;
  margin: 8px 0 10px;
}
.case-card__desc {
  color: var(--color-text-soft);
  font-size: 0.9rem;
  margin: 0 0 14px;
}
.case-card__cta {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.88rem;
}

/* Case detail (vertical flow: title -> before -> content -> [during] -> after -> summary -> cta) */
.case-detail {
  padding: 64px 0;
  border-top: 1px solid var(--color-border);
}
.case-detail:first-of-type { border-top: none; }

.case-tag {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--color-text-soft);
  padding: 3px 12px;
  border-radius: 999px;
}
.case-tag--after { background: var(--color-primary); }
.case-tag--during { background: var(--color-gold); color: var(--color-text); }

.case-photo { margin: 28px 0; }
.case-photo img {
  width: 100%;
  max-width: 760px;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.case-content {
  background: var(--color-muted);
  border-radius: var(--radius);
  padding: 24px 26px;
  margin: 28px 0;
}
.case-content h3 { font-size: 1rem; margin-bottom: 10px; }
.case-content p {
  color: var(--color-text-soft);
  margin: 0;
  font-size: 0.94rem;
}

.case-summary { margin: 28px 0; }
.case-summary h3 {
  font-size: 1rem;
  margin-bottom: 12px;
}

/* Steps */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}
.steps__item {
  display: flex;
  gap: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px 26px;
}
.steps__num {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Shippori Mincho", serif;
  font-weight: 700;
}
.steps__item h3 { font-size: 1rem; margin-bottom: 6px; }
.steps__item p { color: var(--color-text-soft); margin: 0; font-size: 0.92rem; }

/* Map */
.map-frame {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

/* Contact */
.section--cta {
  background: linear-gradient(160deg, #1c1b19, #0e0e0b);
  color: #fff;
}
.contact-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius);
  padding: 28px;
}
.contact-card__label { font-size: 0.85rem; color: var(--color-gold); }
.contact-card__value { font-size: 1.5rem; font-weight: 700; }

.contact-form {
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius);
  padding: 32px;
}
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text-soft);
}
.form-row label span {
  color: #b3492e;
  font-size: 0.72rem;
  margin-left: 6px;
  font-weight: 700;
}
.form-row input,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font: inherit;
  background: var(--color-bg);
  color: var(--color-text);
}
.form-row input:focus,
.form-row textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}
.form-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form-status {
  margin: 0 0 16px;
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 0.92rem;
  line-height: 1.7;
  border: 1px solid transparent;
}
.form-status--success {
  background: #eef5e6;
  border-color: var(--color-primary);
  color: #2d4a12;
}
.form-status--error {
  background: #fbeeea;
  border-color: #b3492e;
  color: #7a2a15;
}
.form-status ul { margin: 6px 0 0; padding-left: 1.2em; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.form-row input[aria-invalid="true"],
.form-row textarea[aria-invalid="true"] { border-color: #b3492e; }

/* Footer */
.site-footer {
  background: #0e0e0b;
  color: #c7c4ba;
  padding: 48px 24px 32px;
}
.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}
.brand--footer { justify-content: center; margin-bottom: 14px; color: #fff; }
.site-footer p { margin: 4px 0; font-size: 0.88rem; }
.site-footer__copy { margin-top: 18px; color: #726f66; font-size: 0.78rem; }

/* Responsive */
@media (max-width: 860px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .site-header__inner { position: relative; }
  .nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 24px 20px;
  }
  .nav.is-open a { padding: 10px 0; width: 100%; }
  .nav.is-open .nav__cta { margin-top: 8px; text-align: center; }

  .only-mobile { display: inline; }
  .strip__inner { grid-template-columns: 1fr; text-align: left; }
  .section__inner--split { grid-template-columns: 1fr; }
  .section__inner--split .section__media { order: -1; }
  .cards { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 20px; }
  .hero { padding: 72px 20px 64px; }

  .works-teaser { grid-template-columns: 1fr; }
  .works-teaser__compare { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .case-card__compare { grid-template-columns: 1fr; }
}

@media (min-width: 861px) and (max-width: 1080px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); }
}