:root {
  --color-ink: #191713;
  --color-ink-soft: #322e26;
  --color-paper: #f7f3e9;
  --color-paper-deep: #eee6d5;
  --color-surface: #fffdf8;
  --color-gold: #b58a26;
  --color-gold-light: #d7b75d;
  --color-gold-pale: #eadcae;
  --color-text: #28251f;
  --color-text-muted: #645f55;
  --color-border: #d8cfbd;
  --color-focus: #1769aa;
  --color-footer-text: #ece7db;
  --color-gold-dark: #72500f;
  --color-footer-bg: #121212;
  --color-footer-muted: #c9c3b7;
  --rgb-ink: 25 23 19;
  --rgb-paper: 247 243 233;
  --rgb-border: 216 207 189;
  --rgb-gold-light: 215 183 93;
  --rgb-white: 255 255 255;
  --rgb-black: 0 0 0;
  --rgb-footer-text: 236 231 219;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --container: 1200px;
  --text-width: 65ch;
  --shadow-card: 0 16px 40px rgb(var(--rgb-ink) / 8%);
  --transition-hover: 140ms ease-out;
  --transition-expand: 240ms ease-out;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-text);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.75;
}

h1,
h2,
h3,
p,
a,
summary,
strong,
small,
span {
  line-break: strict;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

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

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: var(--space-4);
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  color: var(--color-ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin-inline: auto;
}

.narrow {
  max-width: 880px;
}

.section {
  padding-block: var(--space-16);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgb(var(--rgb-border) / 72%);
  background: rgb(var(--rgb-paper) / 96%);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  min-height: 88px;
  width: min(calc(100% - 32px), var(--container));
  margin-inline: auto;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  min-height: 64px;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 56px;
  height: 56px;
  flex: 0 0 56px;
  place-items: center;
  border: 2px solid var(--color-gold);
  background: var(--color-ink);
  clip-path: polygon(29% 0, 71% 0, 100% 29%, 100% 71%, 71% 100%, 29% 100%, 0 71%, 0 29%);
  color: var(--color-gold-light);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.brand-name {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.2;
}

.brand-tagline {
  color: var(--color-text-muted);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

.desktop-nav a,
.footer-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition-hover);
}

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

.header-contact {
  display: none;
  min-height: 44px;
  padding-inline: var(--space-6);
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-ink);
  background: var(--color-ink);
  color: var(--color-surface);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-weight: 600;
  text-decoration: none;
  transition: background-color var(--transition-hover), color var(--transition-hover);
}

.header-contact:hover {
  background: transparent;
  color: var(--color-ink);
}

.menu-button {
  display: grid;
  width: 48px;
  height: 48px;
  padding: var(--space-3);
  place-content: center;
  gap: 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-ink);
  cursor: pointer;
}

.menu-button span {
  width: 22px;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition-expand), opacity var(--transition-expand);
}

.menu-button[aria-expanded="true"] span:first-child {
  transform: translateY(8px) rotate(45deg);
}

.menu-button[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-button[aria-expanded="true"] span:last-child {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-nav {
  padding: var(--space-2) var(--space-4) var(--space-4);
  border-top: 1px solid var(--color-border);
}

.mobile-nav a {
  display: flex;
  min-height: 48px;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-weight: 600;
  text-decoration: none;
}

.hero {
  position: relative;
  overflow: hidden;
  background: var(--color-ink);
  color: var(--color-footer-text);
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background-image:
    linear-gradient(30deg, var(--color-gold) 12%, transparent 12.5%, transparent 87%, var(--color-gold) 87.5%, var(--color-gold)),
    linear-gradient(150deg, var(--color-gold) 12%, transparent 12.5%, transparent 87%, var(--color-gold) 87.5%, var(--color-gold)),
    linear-gradient(30deg, var(--color-gold) 12%, transparent 12.5%, transparent 87%, var(--color-gold) 87.5%, var(--color-gold)),
    linear-gradient(150deg, var(--color-gold) 12%, transparent 12.5%, transparent 87%, var(--color-gold) 87.5%, var(--color-gold));
  background-position: 0 0, 0 0, 40px 72px, 40px 72px;
  background-size: 80px 144px;
}

.hero-grid {
  position: relative;
  display: grid;
  min-height: 680px;
  padding-block: var(--space-16);
  align-items: center;
  gap: var(--space-12);
}

.hero-copy {
  position: relative;
  z-index: 1;
  animation: hero-enter 600ms ease-out both;
}

.eyebrow {
  margin: 0 0 var(--space-4);
  color: var(--color-gold);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 17ch;
  margin: 0;
  color: var(--color-surface);
  font-size: clamp(1.875rem, 6vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.hero h1 span {
  color: var(--color-gold-light);
}

.hero-lead {
  max-width: var(--text-width);
  margin: var(--space-6) 0 var(--space-8);
  color: var(--color-footer-text);
  font-size: 1rem;
  line-height: 1.9;
}

.button {
  display: inline-flex;
  min-width: 208px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-weight: 700;
  text-decoration: none;
  transition: background-color var(--transition-hover), color var(--transition-hover), transform var(--transition-hover);
}

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

.button:active {
  transform: translateY(0);
}

.button[aria-disabled="true"],
.button:disabled {
  cursor: not-allowed;
  opacity: 0.56;
  transform: none;
}

.button-large {
  min-height: 48px;
  padding: var(--space-3) var(--space-6);
}

.button-primary {
  background: var(--color-gold);
  color: var(--color-ink);
}

.button-primary:hover {
  background: var(--color-gold-light);
}

.hero-visual {
  display: grid;
  place-items: center;
  animation: hero-enter 600ms 120ms ease-out both;
}

@keyframes hero-enter {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.octagon {
  display: grid;
  place-items: center;
  clip-path: polygon(29% 0, 71% 0, 100% 29%, 100% 71%, 71% 100%, 29% 100%, 0 71%, 0 29%);
}

.octagon-outer {
  width: min(72vw, 340px);
  aspect-ratio: 1;
  background: linear-gradient(145deg, var(--color-gold-light), var(--color-gold-dark));
  box-shadow: 0 32px 64px rgb(var(--rgb-black) / 28%);
}

.octagon-inner {
  width: calc(100% - 16px);
  aspect-ratio: 1;
  background: var(--color-ink-soft);
  box-shadow: inset 0 0 0 1px rgb(var(--rgb-white) / 12%);
}

.octagon-inner span {
  color: var(--color-gold-light);
  font-size: clamp(6rem, 24vw, 10rem);
  font-weight: 700;
  line-height: 0.9;
}

.octagon-inner small {
  margin-top: calc(var(--space-12) * -1);
  color: var(--color-gold-pale);
  font-family: Georgia, serif;
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.hero-foot {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid rgb(var(--rgb-gold-light) / 28%);
}

.hero-foot span {
  display: grid;
  min-height: 56px;
  place-items: center;
  border-right: 1px solid rgb(var(--rgb-gold-light) / 28%);
  border-bottom: 1px solid rgb(var(--rgb-gold-light) / 28%);
  color: var(--color-gold-pale);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.section-heading {
  max-width: var(--text-width);
  margin: 0 auto var(--space-12);
  text-align: center;
}

.section-heading h2,
.service-intro h2,
.vacant-copy h2,
.contact h2 {
  margin: 0;
  color: var(--color-ink);
  font-size: clamp(1.5rem, 4vw, 1.625rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.section-heading > p:last-child {
  margin: var(--space-4) auto 0;
  color: var(--color-text-muted);
}

.reason-grid {
  display: grid;
  gap: var(--space-6);
}

.reason-card {
  position: relative;
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-hover), transform var(--transition-hover);
}

.reason-card:hover {
  box-shadow: 0 20px 48px rgb(var(--rgb-ink) / 12%);
  transform: translateY(-2px);
}

.reason-number {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  color: var(--color-paper-deep);
  font-family: Georgia, serif;
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
}

.line-icon {
  width: 56px;
  margin-bottom: var(--space-6);
  color: var(--color-gold);
}

.line-icon svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.reason-card h3,
.item-card h3 {
  margin: 0;
  color: var(--color-ink);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.45;
}

.reason-card p,
.item-card p {
  margin: var(--space-3) 0 0;
  color: var(--color-text-muted);
}

.items {
  background: var(--color-ink-soft);
}

.section-heading-light h2 {
  color: var(--color-surface);
}

.section-heading-light > p:last-child {
  color: var(--color-footer-text);
}

.item-grid {
  display: grid;
  gap: var(--space-6);
}

.item-card {
  display: grid;
  padding: var(--space-6);
  align-items: center;
  gap: var(--space-6);
  background: var(--color-paper);
}

.item-card-featured {
  border-top: 4px solid var(--color-gold);
}

.item-label {
  color: var(--color-gold) !important;
  font-family: Georgia, serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.item-graphic {
  position: relative;
  width: 100%;
  min-height: 168px;
  overflow: hidden;
  background: var(--color-paper-deep);
}

.gold-altar span {
  position: absolute;
  left: 50%;
  border: 3px double var(--color-gold);
  background: var(--color-ink);
  transform: translateX(-50%);
}

.gold-altar span:first-child {
  top: 24px;
  width: 112px;
  height: 16px;
}

.gold-altar span:nth-child(2) {
  top: 40px;
  width: 88px;
  height: 96px;
  box-shadow: inset 0 0 0 8px var(--color-gold-pale);
}

.gold-altar span:last-child {
  top: 136px;
  width: 120px;
  height: 12px;
}

.compact-altar span {
  position: absolute;
  inset: 32px 64px 24px;
  border: 4px solid var(--color-ink-soft);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: linear-gradient(90deg, var(--color-surface) 49%, var(--color-border) 50%, var(--color-surface) 51%);
  box-shadow: inset 0 0 0 8px var(--color-gold-pale);
}

.scroll-art span {
  position: absolute;
  inset: 20px 72px;
  border-block: 8px solid var(--color-ink-soft);
  background:
    radial-gradient(circle at 50% 44%, var(--color-gold) 0 12px, transparent 13px),
    linear-gradient(var(--color-surface), var(--color-surface));
  box-shadow: 0 8px 16px rgb(var(--rgb-ink) / 12%);
}

.services {
  background: var(--color-paper-deep);
}

.service-grid {
  display: grid;
  gap: var(--space-12);
}

.service-intro > p:last-child {
  max-width: var(--text-width);
  margin: var(--space-6) 0 0;
}

.service-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
  list-style: none;
}

.service-list li {
  display: grid;
  min-height: 88px;
  padding-block: var(--space-4);
  grid-template-columns: 48px 1fr;
  align-items: center;
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.service-list span {
  color: var(--color-gold);
  font-family: Georgia, serif;
  font-weight: 700;
}

.service-list strong {
  font-size: 1.125rem;
  font-weight: 600;
}

.vacant-house {
  background: var(--color-surface);
}

.vacant-grid {
  display: grid;
  align-items: center;
  gap: var(--space-12);
}

.vacant-visual {
  padding: var(--space-6);
  background: var(--color-paper-deep);
}

.vacant-visual svg {
  width: 100%;
}

.house-bg {
  fill: var(--color-paper);
}

.house-line {
  fill: none;
  stroke: var(--color-ink-soft);
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 5;
}

.house-gold {
  fill: var(--color-gold);
}

.vacant-copy > p:not(.eyebrow) {
  max-width: var(--text-width);
  margin: var(--space-6) 0;
}

.qualification {
  display: flex;
  padding: var(--space-4);
  align-items: center;
  gap: var(--space-4);
  border-left: 4px solid var(--color-gold);
  background: var(--color-paper);
}

.qualification svg {
  width: 32px;
  flex: 0 0 32px;
  fill: none;
  stroke: var(--color-gold);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.qualification p {
  margin: 0 !important;
}

.qualification strong {
  font-weight: 700;
}

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

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

.faq-list summary {
  position: relative;
  display: grid;
  min-height: 72px;
  padding: var(--space-4) var(--space-12) var(--space-4) 0;
  grid-template-columns: 32px 1fr;
  align-items: center;
  gap: var(--space-3);
  font-size: 1rem;
  font-weight: 600;
  list-style: none;
  cursor: pointer;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  right: var(--space-4);
  content: "+";
  color: var(--color-gold);
  font-size: 1.5rem;
  transition: transform var(--transition-expand);
}

.faq-list details[open] summary::after {
  transform: rotate(45deg);
}

.faq-list summary span,
.faq-answer > span {
  color: var(--color-gold);
  font-family: Georgia, serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.faq-answer {
  display: grid;
  padding: 0 var(--space-8) var(--space-6) 0;
  grid-template-columns: 32px 1fr;
  gap: var(--space-3);
}

.faq-answer p {
  margin: 0;
  color: var(--color-text-muted);
}

.contact {
  background: var(--color-ink);
  color: var(--color-footer-text);
  text-align: center;
}

.contact-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact h2 {
  color: var(--color-surface);
}

.contact p:not(.eyebrow) {
  max-width: var(--text-width);
  margin: var(--space-6) 0 var(--space-8);
}

.site-footer {
  padding-block: var(--space-12) var(--space-6);
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
}

.footer-grid {
  display: grid;
  gap: var(--space-8);
}

.brand-footer {
  color: var(--color-footer-text);
}

.brand-footer .brand-tagline {
  color: var(--color-gold-pale);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
}

.footer-bottom {
  display: flex;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  flex-direction: column;
  gap: var(--space-3);
  border-top: 1px solid rgb(var(--rgb-footer-text) / 16%);
}

.footer-bottom small,
.footer-bottom a {
  color: var(--color-footer-muted);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 0.75rem;
}

.footer-bottom a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

@media (min-width: 640px) {
  .section {
    padding-block: var(--space-24);
  }

  .hero-foot {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero-foot span {
    border-bottom: 0;
  }

  .reason-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .item-card {
    grid-template-columns: minmax(180px, 0.8fr) 1fr;
  }

  .item-card-featured {
    grid-column: 1 / -1;
  }

  .item-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .item-card:not(.item-card-featured) {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 768px) {
  .hero-grid {
    min-height: 720px;
    grid-template-columns: 1.2fr 0.8fr;
  }

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

  .hero-visual {
    justify-content: end;
  }

  .octagon-outer {
    width: min(34vw, 400px);
  }

  .service-grid,
  .vacant-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .vacant-copy h2 {
    font-size: 1.625rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1.4fr;
    align-items: center;
  }

  .footer-nav {
    justify-content: flex-end;
  }
}

@media (min-width: 1080px) {
  .desktop-nav,
  .header-contact {
    display: flex;
  }

  .menu-button,
  .mobile-nav {
    display: none;
  }

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

  .hero-lead {
    font-size: 1.125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}