/* ========================================
   Design Studio I.D — Minimal Luxury
   ======================================== */

:root {
  --paper: #ffffff;
  --bg: #fafafa;
  --bg-soft: #f5f4f1;
  --ink: #2c2c2c;
  --ink-soft: #6e6e6e;
  --ink-mute: #b0b0b0;
  --accent: #b89968;
  --accent-soft: #d4c5a3;
  --line: #e5e5e5;
  --line-soft: #f0f0f0;

  --serif: 'Playfair Display', 'Noto Serif JP', serif;
  --sans: 'Noto Serif JP', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  font-size: 15px;
  line-height: 1.8;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  word-break: auto-phrase;
  overflow-wrap: break-word;
}

p, li {
  padding: 0 20px;
  max-width: 100%;
  box-sizing: border-box;
}

span {
  display: inline-block;
}

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

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 48px;
}

.sp-only { display: none; }

/* ── Header ───────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 88px;
}
.logo {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.1;
  color: var(--ink);
}
.logo-en {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 4px;
  font-weight: 400;
  color: var(--ink-soft);
}
.logo-id {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 1px;
  color: var(--accent);
  margin-top: 2px;
}

.site-nav ul {
  display: flex;
  gap: 48px;
  list-style: none;
  align-items: center;
}
.site-nav a {
  font-family: var(--serif);
  font-size: 15px;
  font-style: italic;
  font-weight: 400;
  letter-spacing: 1px;
  color: var(--ink-soft);
  position: relative;
  transition: color 0.3s;
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 50%; bottom: -6px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s, left 0.3s;
}
.site-nav a:hover,
.site-nav a.is-current { color: var(--accent); }
.site-nav a:hover::after,
.site-nav a.is-current::after { width: 100%; left: 0; }

/* ── Hamburger / Mobile Menu ──────────── */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
  padding: 0;
  z-index: 200;
}
.menu-toggle span {
  position: absolute;
  left: 50%;
  width: 24px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.35s ease, top 0.35s ease;
  transform: translateX(-50%);
}
.menu-toggle span:nth-child(1) { top: 17px; }
.menu-toggle span:nth-child(2) { top: 26px; }
.menu-toggle.is-active span:nth-child(1) {
  top: 22px;
  transform: translateX(-50%) rotate(45deg);
}
.menu-toggle.is-active span:nth-child(2) {
  top: 22px;
  transform: translateX(-50%) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--paper);
  z-index: 150;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
  overflow: hidden;
}
.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
}
.mobile-menu nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  margin-bottom: 48px;
  position: relative;
  z-index: 2;
}
.mobile-menu nav a {
  font-family: var(--serif);
  font-style: italic;
  font-size: 36px;
  color: var(--ink);
  text-decoration: none;
  transition: color 0.3s;
  display: inline-block;
}
.mobile-menu nav a:hover { color: var(--accent); }
.mobile-menu-mark {
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent);
  opacity: 0.1;
  font-size: clamp(220px, 60vw, 360px);
  position: absolute;
  bottom: -8vw;
  right: -6vw;
  line-height: 1;
  pointer-events: none;
  letter-spacing: -0.04em;
  z-index: 1;
}

/* ── Buttons ──────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 18px 36px;
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 3px;
  font-weight: 500;
  transition: all 0.4s;
  border: 1px solid var(--ink);
  cursor: pointer;
}
.btn .arrow {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  transition: transform 0.4s;
}
.btn:hover .arrow { transform: translateX(8px); }

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--paper);
  color: var(--ink);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
}
.btn-ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  color: var(--ink);
  border-bottom: 1px solid transparent;
  padding-bottom: 4px;
  transition: border-color 0.3s;
}
.link-arrow:hover { border-bottom-color: var(--accent); }
.link-arrow .arrow { transition: transform 0.3s; }
.link-arrow:hover .arrow { transform: translateX(6px); }

/* ── Section Head ─────────────────────── */
.section-label {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--ink-mute);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 24px;
}
.section-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(38px, 5vw, 72px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.section-title em {
  font-style: italic;
}

/* ── Hero ─────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 160px 0 100px;
  overflow: hidden;
}
.hero .container { position: relative; z-index: 1; }

.hero-meta {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--ink-mute);
  margin-bottom: 48px;
  text-transform: uppercase;
}
.hero-title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(60px, 11vw, 180px);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 56px;
  color: var(--ink);
}
.hero-title em { font-style: italic; display: block; }
.hero-title em:nth-child(2) {
  margin-left: clamp(40px, 8vw, 120px);
  color: var(--accent);
}

.hero-lead {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 2.2;
  color: var(--ink-soft);
  margin-bottom: 56px;
  max-width: 460px;
}

.hero-mark {
  position: absolute;
  right: -3vw;
  bottom: -4vw;
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(220px, 35vw, 520px);
  color: var(--accent);
  opacity: 0.12;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  z-index: 0;
  letter-spacing: -0.04em;
}

.hero-corner {
  position: absolute;
  top: 50%;
  right: 48px;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--ink-mute);
  text-transform: uppercase;
}

/* ── About (Intro on Top) ─────────────── */
.about {
  padding: 200px 0;
  border-top: 1px solid var(--line-soft);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.about-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(28px, 3.8vw, 56px);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.about-title em {
  font-style: italic;
  color: var(--accent);
}
.about-text {
  padding-top: 16px;
}
.about-text p {
  font-size: 15px;
  line-height: 2.2;
  color: var(--ink-soft);
  margin-bottom: 24px;
}
.about-text p:last-child { margin-bottom: 0; }

/* ── Service Preview / Service Page ───── */
.service-preview { padding: 200px 0; background: var(--bg); }
.service-preview .section-head { margin-bottom: 96px; }
.service-list {
  list-style: none;
  border-top: 1px solid var(--line);
  margin-bottom: 80px;
}
.service-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 40px;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
  transition: padding 0.4s;
}
.service-row:hover { padding-left: 24px; }
.service-row-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 32px;
  color: var(--ink-mute);
}
.service-row-body h3 {
  font-family: var(--sans);
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 6px;
  letter-spacing: 1px;
}
.service-row-body p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
}
.service-row-en {
  font-family: var(--serif);
  font-style: italic;
  font-size: 20px;
  color: var(--ink-mute);
  letter-spacing: 1px;
}

/* Service Page detail */
.service-detail {
  padding: 200px 0;
}
.service-detail-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 80px;
  padding: 80px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.service-detail-item:last-child { border-bottom: none; }
.service-detail-item:first-child { padding-top: 0; }
.service-detail-side {
  font-family: var(--serif);
  font-style: italic;
  position: sticky;
  top: 120px;
}
.service-detail-side .num {
  font-size: 48px;
  color: var(--ink-mute);
  display: block;
  line-height: 1;
  margin-bottom: 16px;
}
.service-detail-side .en {
  font-size: 20px;
  color: var(--ink);
}
.service-detail-body h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(28px, 3.5vw, 48px);
  line-height: 1.25;
  margin-bottom: 32px;
}
.service-detail-body h3 em { font-style: italic; }
.service-detail-body .lead {
  font-size: 16px;
  line-height: 2.2;
  color: var(--ink-soft);
  margin-bottom: 32px;
  max-width: 640px;
}
.service-includes {
  list-style: none;
  border-top: 1px solid var(--line);
  margin-top: 32px;
}
.service-includes li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-soft);
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.service-includes li::before {
  content: '—';
  color: var(--ink-mute);
}

/* ── Works ────────────────────────────── */
.works-preview { padding: 200px 0; }
.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 80px 64px;
}
.work {
  display: block;
  cursor: pointer;
}
.work-visual {
  aspect-ratio: 4/3;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
  transition: opacity 0.4s;
}
.work:hover .work-visual { opacity: 0.7; }
.work-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(0, 0, 0, 0.04);
  pointer-events: none;
}
.work-visual.bg-1 { background: linear-gradient(135deg, #f0e6d0 0%, #d4c5a3 100%); }
.work-visual.bg-2 { background: linear-gradient(135deg, #2c2c2c 0%, #4a4a4a 100%); }
.work-visual.bg-3 { background: linear-gradient(135deg, #fafafa 0%, #ececec 100%); }
.work-visual.bg-4 { background: linear-gradient(135deg, #d4c5a3 0%, #b89968 100%); }
.work-visual.bg-5 { background: linear-gradient(135deg, #2c2c2c 0%, #b89968 100%); }
.work-visual.bg-6 { background: linear-gradient(135deg, #f5f4f1 0%, #b89968 100%); }
.work-visual-id {
  position: absolute;
  bottom: 24px;
  left: 24px;
  font-family: var(--serif);
  font-style: italic;
  color: rgba(255, 255, 255, 0.7);
  font-size: 22px;
  letter-spacing: 1px;
  mix-blend-mode: difference;
}
.work-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--ink-mute);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.work-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 24px;
  line-height: 1.4;
  color: var(--ink);
  letter-spacing: 0.5px;
}
.work-title,
.work-title em,
.work-title i { font-style: normal; }
.work-client {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 4px;
}

/* ── Contact ──────────────────────────── */
.contact-preview {
  padding: 200px 0;
  background: var(--bg);
  text-align: center;
}
.contact-preview .section-title { margin-bottom: 32px; }
.contact-preview p {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0 auto 48px;
  line-height: 2;
}

.contact-page {
  padding: 200px 0;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 96px;
  align-items: center;
  margin-top: 80px;
}
.contact-text h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 32px;
}
.contact-text h2 em { font-style: italic; }
.contact-text p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 2.2;
  margin-bottom: 16px;
}

.line-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 56px 48px;
  text-align: left;
}
.line-card-label {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.line-card-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 36px;
  font-weight: 400;
  margin-bottom: 8px;
  color: var(--ink);
}
.line-card-sub {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 40px;
}
.line-btn {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  justify-content: center;
  padding: 22px 32px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 2px;
  font-weight: 500;
  transition: all 0.4s;
}
.line-btn:hover { background: var(--ink); transform: translateY(-2px); }
.line-btn .arrow {
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  transition: transform 0.3s;
}
.line-btn:hover .arrow { transform: translateX(6px); }

.line-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.contact-info {
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.contact-info dl {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px 24px;
  font-size: 14px;
}
.contact-info dt {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-mute);
}
.contact-info dd { color: var(--ink-soft); }

/* ── Contact (Simple / LINE only) ──────────────── */
.contact-simple {
  padding: 220px 24px 180px;
  text-align: center;
}
.contact-simple .container {
  max-width: 640px;
  padding: 0;
}
.contact-simple-title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(56px, 9vw, 128px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 72px;
}
.contact-simple-message {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 2.2;
  color: var(--ink-soft);
  margin: 0 auto 72px;
  padding: 0;
  max-width: 520px;
}
.contact-simple-message span { margin: 0 1px; }

.contact-simple-cta {
  display: inline-block;
  max-width: 100%;
  padding: 22px 56px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 3px;
  text-align: center;
  border: 1px solid var(--ink);
  transition: background 0.4s ease, color 0.4s ease;
}
.contact-simple-cta:hover {
  background: var(--paper);
  color: var(--ink);
}

/* ── Page Hero (for subpages) ─────────── */
.page-hero {
  padding: 200px 0 80px;
  border-bottom: 1px solid var(--line-soft);
}
.page-hero-meta {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 32px;
}
.page-hero-title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(56px, 9vw, 144px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 32px;
}
.page-hero-lead {
  font-size: 16px;
  line-height: 2.2;
  color: var(--ink-soft);
  max-width: 560px;
}

/* ── Footer ───────────────────────────── */
.site-footer {
  padding: 100px 0 32px;
  border-top: 1px solid var(--line);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 80px;
  padding-bottom: 60px;
}
.footer-brand {
  font-family: var(--serif);
}
.footer-brand .logo-id {
  font-size: 56px;
  font-style: italic;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
  line-height: 1;
}
.footer-brand p {
  font-family: var(--sans);
  font-size: 13px;
  line-height: 2;
  color: var(--ink-soft);
}
.footer-col h4 {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 500;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-col a {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  color: var(--ink);
  transition: color 0.3s;
}
.footer-col a:hover { color: var(--ink-mute); }

.copyright {
  display: flex;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--ink-mute);
}

/* ── Price ────────────────────────────── */
.price {
  padding: 200px 0;
  background: var(--paper);
}
.price .section-title {
  margin-bottom: 24px;
}
.price-intro {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 2;
  max-width: 640px;
  margin-bottom: 96px;
  padding: 0;
}
.price-group {
  max-width: 760px;
  margin: 0 auto 96px;
  padding: 0 20px;
}
.price-group:last-child { margin-bottom: 0; }
.price-group-head {
  display: flex;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--accent-soft);
}
.price-group-en {
  font-family: var(--serif);
  font-style: italic;
  font-size: 26px;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.price-group-jp {
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--ink-soft);
}
.price-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.price-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.price-list > .price-row:last-child { border-bottom: none; }
.price-item {
  flex: 1 1 60%;
  min-width: 0;
  font-size: 15px;
  color: var(--ink);
  line-height: 1.7;
}
.price-item-sub {
  font-size: 12px;
  color: var(--ink-mute);
  margin-left: 6px;
  letter-spacing: 0.05em;
}
.price-amount {
  flex: 0 0 auto;
  margin-left: auto;
  white-space: nowrap;
  font-family: var(--serif);
  color: var(--ink);
  line-height: 1;
}
.price-amount .num {
  font-size: 24px;
  letter-spacing: 0.02em;
  font-weight: 500;
}
.price-amount .unit {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-soft);
  margin-left: 5px;
  letter-spacing: 0.05em;
}
.price-sub-label {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 36px;
  margin-bottom: 4px;
}
.price-sub-en {
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.price-sub-jp {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
}
.price-list-sub .price-item { font-size: 14px; color: var(--ink-soft); }
.price-list-sub .price-amount .num { font-size: 20px; }
.price-note {
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.9;
  padding: 12px 0 0;
  letter-spacing: 0.04em;
}
.price-offer {
  margin-top: 28px;
  padding: 24px 28px;
  background: var(--bg-soft);
  border-left: 2px solid var(--accent);
  display: block;
}
.price-offer-tag {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 8px;
}
.price-offer-text {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.95;
  padding: 0;
  letter-spacing: 0.02em;
}
.price-offer-num {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink);
  font-weight: 500;
  margin: 0 4px;
}

/* ── Responsive ───────────────────────── */
@media (max-width: 1024px) {
  .container { padding: 0 36px; }
  .about-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 56px; }
  .about-image { max-width: 480px; }
  .about-image::after { display: none; }
  .service-row { grid-template-columns: 64px 1fr auto; gap: 28px; }
  .service-detail-item { grid-template-columns: 160px 1fr; gap: 56px; }
  .works-grid { gap: 48px 40px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 48px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  .sp-only { display: inline; }
  .pc-only { display: none; }
  .container { padding: 0 20px; }

  .header-inner { height: 64px; }
  .logo-en { font-size: 9px; letter-spacing: 3px; }
  .logo-id { font-size: 20px; }
  .site-nav { display: none; }
  .menu-toggle { display: block; }

  .hero { padding: 100px 0 72px; min-height: auto; }
  .hero-meta { font-size: 10px; margin-bottom: 28px; letter-spacing: 3px; }
  .hero-title { font-size: clamp(52px, 17vw, 96px); margin-bottom: 32px; }
  .hero-title em:nth-child(2) { margin-left: 20px; }
  .hero-lead { font-size: 14px; line-height: 2; margin-bottom: 36px; }
  .hero-corner { display: none; }

  .about,
  .service-preview,
  .works-preview,
  .contact-preview,
  .contact-page,
  .service-detail { padding: 80px 0; }

  .section-head { margin-bottom: 40px; }
  .section-title { font-size: clamp(28px, 8vw, 44px); }
  .section-label { margin-bottom: 16px; font-size: 10px; letter-spacing: 3px; }

  .about-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-title { font-size: clamp(24px, 7.5vw, 38px); line-height: 1.4; }
  .about-text { padding-top: 0; }
  .about-text p { font-size: 14px; line-height: 2; margin-bottom: 18px; }

  .service-list { margin-bottom: 48px; }
  .service-row {
    grid-template-columns: 32px 1fr;
    gap: 14px;
    padding: 24px 0;
  }
  .service-row-num { font-size: 20px; }
  .service-row-body h3 { font-size: 17px; margin-bottom: 4px; }
  .service-row-body p { font-size: 13px; line-height: 1.75; }
  .service-row-en { display: none; }
  .service-row:hover { padding-left: 0; }

  .service-detail-item {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 40px 0;
  }
  .service-detail-side {
    position: static;
    display: flex;
    align-items: baseline;
    gap: 16px;
  }
  .service-detail-side .num { font-size: 28px; margin-bottom: 0; }
  .service-detail-side .en { font-size: 14px; }
  .service-detail-body h3 { font-size: clamp(22px, 6.5vw, 32px); margin-bottom: 20px; line-height: 1.35; }
  .service-detail-body .lead { font-size: 14px; line-height: 2; margin-bottom: 20px; }
  .service-includes { margin-top: 24px; }
  .service-includes li { font-size: 13px; padding: 12px 0; line-height: 1.7; }

  .works-grid { grid-template-columns: 1fr; gap: 48px; }
  .work-title { font-size: 20px; }
  .work-client { font-size: 12px; }

  .page-hero { padding: 100px 0 56px; }
  .page-hero-title { font-size: clamp(48px, 18vw, 88px); margin-bottom: 24px; }
  .page-hero-lead { font-size: 14px; line-height: 2; }
  .page-hero-meta { font-size: 10px; letter-spacing: 3px; margin-bottom: 20px; }

  .line-card { padding: 32px 24px; }
  .line-card-title { font-size: 28px; }
  .line-card-sub { font-size: 13px; margin-bottom: 28px; }

  .contact-text h2 { font-size: clamp(28px, 8vw, 44px); margin-bottom: 20px; line-height: 1.3; }
  .contact-text p { font-size: 14px; line-height: 2; }
  .contact-info { margin-top: 32px; padding-top: 32px; }
  .contact-info dl { grid-template-columns: 84px 1fr; gap: 12px 16px; font-size: 13px; }

  .contact-preview p { font-size: 14px; line-height: 2; margin: 0 auto 32px; }

  /* Simple Contact (mobile) */
  .contact-simple { padding: 140px 16px 100px; }
  .contact-simple-title {
    font-size: clamp(48px, 16vw, 88px);
    margin-bottom: 48px;
  }
  .contact-simple-message {
    font-size: 13.5px;
    line-height: 2;
    margin-bottom: 52px;
  }
  .contact-simple-cta {
    width: 100%;
    padding: 20px 16px;
    font-size: 12px;
    letter-spacing: 2px;
  }

  .price { padding: 80px 0; }
  .price-intro { font-size: 14px; line-height: 2; margin-bottom: 56px; }
  .price-group { margin-bottom: 64px; padding: 0; }
  .price-group-head { gap: 12px; padding-bottom: 14px; }
  .price-group-en { font-size: 22px; }
  .price-group-jp { font-size: 11px; letter-spacing: 0.18em; }
  .price-row { padding: 14px 0; gap: 8px 12px; }
  .price-item { font-size: 13.5px; flex: 1 1 55%; line-height: 1.65; }
  .price-item-sub { font-size: 11px; margin-left: 4px; }
  .price-amount .num { font-size: 20px; }
  .price-amount .unit { font-size: 11px; margin-left: 4px; }
  .price-list-sub .price-item { font-size: 13px; }
  .price-list-sub .price-amount .num { font-size: 17px; }
  .price-sub-label { margin-top: 28px; gap: 10px; }
  .price-sub-en { font-size: 13px; }
  .price-sub-jp { font-size: 10px; letter-spacing: 0.22em; }
  .price-note { font-size: 11px; line-height: 1.85; }
  .price-offer { padding: 18px 20px; margin-top: 22px; }
  .price-offer-tag { font-size: 12px; }
  .price-offer-text { font-size: 12.5px; line-height: 1.95; }
  .price-offer-num { font-size: 15px; }

  .btn { padding: 16px 28px; font-size: 12px; letter-spacing: 2px; }
  .line-btn { padding: 18px 24px; font-size: 13px; }

  .site-footer { padding: 56px 0 20px; }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; padding-bottom: 36px; }
  .footer-brand .logo-id { font-size: 44px; }
  .footer-brand p { font-size: 12px; line-height: 1.9; }
  .footer-col h4 { margin-bottom: 14px; }
  .footer-col a { font-size: 14px; }
  .copyright { flex-direction: column; gap: 8px; text-align: center; padding-top: 20px; font-size: 10px; }

  .mobile-menu nav a { font-size: 32px; }
  .mobile-menu nav ul { gap: 24px; }
}

@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .contact-simple { padding: 120px 12px 80px; }
  .contact-simple-title { font-size: clamp(44px, 15vw, 64px); margin-bottom: 36px; }
  .contact-simple-message { font-size: 13px; line-height: 1.95; margin-bottom: 40px; }
  .contact-simple-cta { padding: 18px 8px; font-size: 11px; letter-spacing: 1.5px; }
}

/* --- 料金エリア全体のフォントを高級感のある明朝体に統一 --- */
.price,  /* 料金エリア全体 */
.price-row,  /* 料金の各行 */
.price-amount .num,  /* 数字 */
.price-amount .unit, /* 円 */
.price-offer-num /* 19,800 */ {
    font-family: var(--serif), "Times New Roman", Times, serif !important; /* 全体を明朝体に */
    letter-spacing: 0.05em; /* 文字間を少し広げて優雅に */
}

/* --- 数字だけを少し強調 --- */
.price-amount .num, 
.price-offer-num {
    font-weight: 500 !important; /* 数字だけを少し太く */
    font-size: 1.1em; /* 数字だけを少し大きく */
}