:root {
  --bg: #f5f1ea;
  --surface: #fcfbf8;
  --ink: #111111;
  --muted: #5e5b55;
  --green: #163925;
  --gold: #b38d45;
  --line: rgba(17, 17, 17, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', 'Noto Serif JP', serif;
  color: var(--ink);
  background: linear-gradient(135deg, #fbf7f2 0%, var(--bg) 100%);
  line-height: 1.7;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
}

.page-shell {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 24px 48px;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0 28px;
  border-bottom: 1px solid var(--line);
  gap: 16px;
  position: relative;
}

.brand {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-link {
  position: relative;
  padding: 6px 0;
}

.nav-link.is-current {
  color: var(--green);
  font-weight: 700;
}

.nav-link.is-current::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 999px;
  background: var(--green);
}

.menu-toggle,
.menu-close {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
}

.menu-close {
  display: none;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--ink);
  margin-bottom: 10px;
}

.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(17, 17, 17, 0.35);
  z-index: 20;
}

.nav-backdrop.is-active {
  display: block;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  padding: 64px 0 56px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.hero h1,
.section h2,
.page-hero h1 {
  font-family: 'Noto Serif JP', serif;
  line-height: 1.2;
  margin: 0 0 16px;
}

.hero h1 {
  font-size: clamp(2.2rem, 3.6vw, 3.6rem);
  max-width: 700px;
}

.lead,
.page-hero p,
.content-card p,
.content-list li,
.form-help,
.field label,
.field input,
.field textarea,
.field select,
.info-card p {
  color: var(--muted);
}

.lead {
  font-size: 1.06rem;
  max-width: 630px;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.button.primary {
  background: var(--ink);
  color: white;
  box-shadow: 0 10px 30px rgba(17, 17, 17, 0.12);
}

.button.secondary {
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.frame-card {
  width: min(100%, 420px);
  aspect-ratio: 4 / 5;
  background: linear-gradient(135deg, rgba(255,255,255,0.94), rgba(240,233,220,0.8));
  border: 1px solid rgba(17, 17, 17, 0.08);
  border-radius: 32px;
  box-shadow: 0 24px 60px rgba(17, 17, 17, 0.08);
  padding: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.frame-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  border: 1px solid rgba(17, 17, 17, 0.12);
  border-radius: 24px;
  overflow: hidden;
  background: radial-gradient(circle at top, rgba(179,141,69,0.16), transparent 42%), var(--surface);
}

.circle-ring {
  position: absolute;
  inset: 14%;
  border: 1px solid var(--green);
  border-radius: 50%;
}

.circle-ring--small {
  inset: 24%;
  border-color: rgba(22, 57, 37, 0.55);
}

.circle-ring--thin {
  inset: 34%;
  border-color: var(--gold);
  border-width: 2px;
}

.section {
  padding: 40px 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: start;
}

.panel-card,
.info-card,
.contact-strip,
.content-card,
.form-card,
.page-hero,
.page-section {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 12px 32px rgba(17, 17, 17, 0.04);
}

.panel-card ul,
.content-list {
  margin: 10px 0 0;
  padding-left: 18px;
}

.section-heading {
  margin-bottom: 20px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.info-card h3,
.content-card h3,
.page-section h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.info-card p,
.content-card p,
.page-section p {
  margin: 0;
}

.link-card {
  text-decoration: none;
  display: block;
}

.content-page {
  display: grid;
  gap: 24px;
  padding-top: 20px;
}

.page-hero {
  margin-top: 6px;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  max-width: 760px;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.content-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.content-list li + li {
  margin-top: 8px;
}

.step-list {
  display: grid;
  gap: 16px;
}

.step-card {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 16px;
  align-items: start;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 10px 24px rgba(17, 17, 17, 0.03);
}

.step-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.step-card .step-note {
  margin-top: 8px;
  font-size: 0.95rem;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--green);
  color: white;
  font-weight: 700;
}

.note-card {
  border-left: 4px solid var(--green);
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.concept-nav-actions {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.concept-nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 72px;
  padding: 0 18px;
  border-radius: 18px;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-align: center;
  line-height: 1.25;
}

.concept-nav-button--long {
  font-size: 16px;
}

.concept-nav-button--mid {
  font-size: 17px;
}

.concept-nav-button--venue {
  font-size: 15px;
}

.form-card {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  background: rgba(255, 255, 255, 0.86);
}

.field textarea {
  min-height: 140px;
  resize: vertical;
}

.checkbox-row {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.checkbox-row input {
  margin-top: 4px;
}

.contact-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-top: 20px;
}

.site-footer {
  padding: 24px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--line);
  margin-top: 20px;
}

body.brand-home {
  background:
    radial-gradient(1200px 460px at 14% 4%, rgba(22, 57, 37, 0.08), transparent 55%),
    linear-gradient(180deg, #f7f2ea 0%, #f2ece3 100%);
}

.brand-home .brand-hero {
  max-width: 1060px;
  margin: 0 auto;
  padding: clamp(40px, 7vw, 82px) 0 clamp(40px, 7vw, 86px);
  text-align: center;
}

.brand-home .brand-mark {
  margin: 0;
  color: var(--green);
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  font-size: clamp(0.72rem, 0.9vw, 0.86rem);
  font-family: 'Noto Serif JP', serif;
  font-weight: 500;
}

.brand-home .brand-catch {
  margin: clamp(12px, 2vw, 22px) 0 0;
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.55rem, 3vw, 2.55rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.brand-home .hero-image-wrap {
  margin: clamp(18px, 2.8vw, 30px) auto 0;
  width: min(100%, 980px);
}

.brand-home .hero-image {
  margin: 0;
  width: 100%;
  height: clamp(420px, 44vw, 500px);
  border-radius: 32px;
  overflow: hidden;
  border: 1.2px solid rgba(17, 17, 17, 0.18);
  background: #e6e0d7;
  box-shadow: 0 22px 46px rgba(17, 17, 17, 0.1);
}

.brand-home .hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 38% 52%;
  filter: saturate(90%) contrast(94%) brightness(97%);
}

.brand-home .brand-body {
  margin: clamp(14px, 2.3vw, 22px) auto 0;
  max-width: 680px;
  font-size: clamp(1rem, 1.35vw, 1.12rem);
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: #1b1b1b;
}

.brand-home .brand-body p {
  margin: 0;
}

@media (max-width: 900px) {
  .hero,
  .intro-grid,
  .card-grid,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .concept-nav-actions {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .concept-nav-button,
  .concept-nav-button--long,
  .concept-nav-button--mid,
  .concept-nav-button--venue {
    font-size: 18px;
    height: 64px;
  }

  .contact-strip {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 680px) {
  .step-card {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .step-number {
    width: 36px;
    height: 36px;
  }
}

@media (max-width: 680px) {
  .page-shell {
    padding: 16px 16px 32px;
  }

  .brand-home .brand-hero {
    padding: 34px 0 44px;
  }

  .brand-home .brand-mark {
    letter-spacing: 0.2em;
    text-indent: 0.2em;
  }

  .brand-home .brand-catch {
    margin-top: 10px;
    font-size: clamp(1.46rem, 7vw, 2rem);
    line-height: 1.45;
  }

  .brand-home .hero-image-wrap {
    margin-top: 16px;
  }

  .brand-home .hero-image {
    height: clamp(250px, 64vw, 340px);
    border-radius: 24px;
  }

  .brand-home .hero-image img {
    object-position: 42% 52%;
  }

  .brand-home .brand-body {
    margin-top: 14px;
    font-size: 0.98rem;
    line-height: 1.8;
  }

  .site-header {
    flex-wrap: wrap;
    gap: 12px;
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(251, 247, 242, 0.92);
    backdrop-filter: blur(8px);
  }

  .menu-toggle {
    display: inline-flex;
  }

  .menu-close {
    display: inline-flex;
  }

  .site-nav {
    display: flex;
    position: fixed;
    top: 0;
    right: 0;
    width: min(84vw, 320px);
    height: 100vh;
    padding: 24px 20px 32px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    background: var(--surface);
    border-left: 1px solid var(--line);
    box-shadow: -16px 0 40px rgba(17, 17, 17, 0.12);
    transform: translateX(100%);
    transition: transform 0.25s ease;
    z-index: 30;
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
  }

  .hero {
    padding-top: 36px;
  }

  .hero h1 {
    font-size: 2rem;
  }
}