/* ============================================
   Setouchi & Kuro Design Office - Stylesheet
   (Peony's design / art direction / product
   development arm, leveraging bridal experience)
   ============================================ */

/* --- Shared design office tokens --- */
:root {
  --do-bg: #F4F2EE;
  --do-bg-warm: #ECE8E0;
  --do-ink: #1A1A1A;
  --do-ink-soft: #2E2E2E;
  --do-ink-mute: #6B665E;
  --do-line: #1A1A1A;
  --do-paper: #FAF8F4;

  /* Setouchi (瀬戸内) — calm sea / sand / horizon */
  --setouchi-bg: #EDF1F0;
  --setouchi-bg-alt: #DCE6E7;
  --setouchi-ink: #1F2A2E;
  --setouchi-ink-soft: #475A60;
  --setouchi-ink-mute: #8A9A9D;
  --setouchi-accent: #4C7479;
  --setouchi-sand: #D9CFB8;
  --setouchi-paper: #F7F8F6;

  /* Kuro (黒) — Tokyo / sumi / steel */
  --kuro-bg: #0F0F10;
  --kuro-bg-alt: #1A1A1C;
  --kuro-ink: #F2F0EB;
  --kuro-ink-soft: #C9C5BD;
  --kuro-ink-mute: #7C7972;
  --kuro-accent: #C8A968;
  --kuro-line: #2E2E32;

  --do-font-display: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --do-font-sans: 'Inter', 'Helvetica Neue', 'Noto Sans JP', sans-serif;
  --do-font-jp: 'Noto Serif JP', serif;
  --do-font-mono: 'JetBrains Mono', 'IBM Plex Mono', monospace;

  --do-easing: cubic-bezier(0.2, 0.6, 0.2, 1);
}

/* --- Reset (scoped) --- */
.do-body *,
.do-body *::before,
.do-body *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.do-body {
  font-family: var(--do-font-sans);
  background: var(--do-bg);
  color: var(--do-ink);
  line-height: 1.75;
  letter-spacing: 0.02em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.do-body img {
  max-width: 100%;
  height: auto;
  display: block;
}

.do-body a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s var(--do-easing), color 0.3s var(--do-easing);
}

.do-body ul {
  list-style: none;
}

.do-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* --- Top bar (shared) --- */
.do-topbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 20px 0;
  mix-blend-mode: normal;
  transition: background 0.4s var(--do-easing), padding 0.4s var(--do-easing);
}

.do-topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.do-mark {
  font-family: var(--do-font-display);
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

.do-mark small {
  display: block;
  font-family: var(--do-font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  opacity: 0.55;
  margin-top: 2px;
  font-weight: 400;
}

.do-nav {
  display: flex;
  gap: 36px;
  align-items: center;
}

.do-nav a {
  font-family: var(--do-font-sans);
  font-size: 0.74rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 500;
  position: relative;
  padding-bottom: 4px;
}

.do-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.4s var(--do-easing);
}

.do-nav a:hover::after {
  width: 100%;
}

.do-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.do-nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* --- Hero (shared base) --- */
.do-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding: 160px 0 80px;
  overflow: hidden;
}

.do-hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
}

.do-hero-eyebrow {
  font-family: var(--do-font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  margin-bottom: 28px;
  opacity: 0.7;
  font-weight: 500;
}

.do-hero-title {
  font-family: var(--do-font-display);
  font-size: clamp(3rem, 9vw, 8rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.01em;
  margin-bottom: 32px;
}

.do-hero-title em {
  font-style: italic;
  font-weight: 300;
}

.do-hero-sub {
  font-family: var(--do-font-jp);
  font-size: 1rem;
  font-weight: 300;
  line-height: 2.1;
  max-width: 540px;
  letter-spacing: 0.06em;
}

.do-hero-meta {
  margin-top: 56px;
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  font-family: var(--do-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.75;
}

.do-hero-meta dt {
  display: block;
  opacity: 0.55;
  margin-bottom: 6px;
  font-size: 0.65rem;
}

.do-hero-meta dd {
  margin: 0;
}

/* --- Section base --- */
.do-section {
  padding: 140px 0;
  position: relative;
}

.do-section-head {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 48px;
  margin-bottom: 80px;
  align-items: baseline;
}

.do-section-num {
  font-family: var(--do-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.55;
}

.do-section-title {
  font-family: var(--do-font-display);
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.005em;
}

.do-section-title em {
  font-style: italic;
  font-weight: 300;
}

.do-section-lead {
  margin-top: 16px;
  font-family: var(--do-font-jp);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 2.1;
  max-width: 640px;
  letter-spacing: 0.06em;
}

/* --- Service grid --- */
.do-services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: currentColor;
  border: 1px solid currentColor;
}

.do-service-card {
  padding: 48px 36px 56px;
  position: relative;
  transition: background 0.4s var(--do-easing);
}

.do-service-num {
  font-family: var(--do-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  opacity: 0.5;
  margin-bottom: 32px;
}

.do-service-title {
  font-family: var(--do-font-display);
  font-size: 1.7rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  line-height: 1.2;
}

.do-service-title small {
  display: block;
  font-family: var(--do-font-jp);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  margin-top: 8px;
  opacity: 0.7;
}

.do-service-text {
  margin-top: 28px;
  font-family: var(--do-font-jp);
  font-size: 0.85rem;
  font-weight: 300;
  line-height: 2.05;
  letter-spacing: 0.05em;
  opacity: 0.85;
}

.do-service-tags {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.do-service-tags span {
  font-family: var(--do-font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid currentColor;
  opacity: 0.7;
}

/* --- Story / about block --- */
.do-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.do-story-visual {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
}

.do-story-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(15%) contrast(1.05);
}

.do-story-text p {
  font-family: var(--do-font-jp);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 2.2;
  letter-spacing: 0.06em;
  margin-bottom: 22px;
}

.do-story-quote {
  font-family: var(--do-font-display);
  font-style: italic;
  font-size: 1.4rem;
  font-weight: 400;
  line-height: 1.6;
  margin: 36px 0;
  padding-left: 24px;
  border-left: 1px solid currentColor;
  opacity: 0.92;
}

/* --- Locations (two offices) --- */
.do-locations {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.do-location {
  position: relative;
  display: block;
  aspect-ratio: 3/4;
  overflow: hidden;
  color: #ffffff;
}

.do-location-img {
  position: absolute;
  inset: 0;
}

.do-location-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--do-easing);
}

.do-location:hover .do-location-img img {
  transform: scale(1.04);
}

.do-location-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(0, 0, 0, 0.45) 0%,
    rgba(0, 0, 0, 0.2) 30%,
    rgba(0, 0, 0, 0.35) 60%,
    rgba(0, 0, 0, 0.7) 100%);
}

.do-location-content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 40px 36px;
  color: #ffffff;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
}

.do-location-tag {
  font-family: var(--do-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #ffffff;
  opacity: 0.95;
}

.do-location-foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.do-location-name {
  font-family: var(--do-font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
  color: #ffffff;
}

.do-location-name small {
  display: block;
  font-family: var(--do-font-jp);
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  margin-top: 14px;
  color: #ffffff;
  opacity: 0.95;
}

.do-location-arrow {
  font-family: var(--do-font-display);
  font-size: 2rem;
  line-height: 1;
  color: #ffffff;
  transition: transform 0.4s var(--do-easing);
}

.do-location:hover .do-location-arrow {
  transform: translateX(8px);
}

/* --- Capability list --- */
.do-capabilities {
  border-top: 1px solid currentColor;
}

.do-cap-row {
  display: grid;
  grid-template-columns: 80px 1fr 1.4fr 100px;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid currentColor;
  align-items: baseline;
}

.do-cap-num {
  font-family: var(--do-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  opacity: 0.55;
}

.do-cap-title {
  font-family: var(--do-font-display);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.do-cap-title small {
  display: block;
  font-family: var(--do-font-jp);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  margin-top: 6px;
  opacity: 0.7;
}

.do-cap-desc {
  font-family: var(--do-font-jp);
  font-size: 0.85rem;
  font-weight: 300;
  line-height: 2;
  letter-spacing: 0.05em;
  opacity: 0.85;
}

.do-cap-meta {
  font-family: var(--do-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.6;
  text-align: right;
}

/* --- Info block --- */
.do-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 80px;
  padding: 60px 0;
  border-top: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
}

.do-info dt {
  font-family: var(--do-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  opacity: 0.6;
  padding: 14px 0;
  border-bottom: 1px solid rgba(0,0,0,0.08);
}

.do-info dd {
  font-family: var(--do-font-jp);
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 1.9;
  letter-spacing: 0.05em;
  padding: 14px 0;
  border-bottom: 1px solid rgba(0,0,0,0.08);
}

/* --- CTA block --- */
.do-cta {
  text-align: center;
  padding: 160px 0;
}

.do-cta-eyebrow {
  font-family: var(--do-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  opacity: 0.65;
  margin-bottom: 32px;
}

.do-cta-title {
  font-family: var(--do-font-display);
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.005em;
  margin-bottom: 48px;
}

.do-cta-title em {
  font-style: italic;
  font-weight: 300;
}

.do-cta-btn {
  display: inline-block;
  font-family: var(--do-font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 22px 48px;
  border: 1px solid currentColor;
  transition: all 0.4s var(--do-easing);
}

.do-cta-btn:hover {
  background: currentColor;
}

.do-cta-btn:hover span {
  color: var(--do-bg);
}

.do-cta-btn span {
  position: relative;
  z-index: 1;
}

/* --- Footer --- */
.do-footer {
  padding: 80px 0 40px;
  border-top: 1px solid currentColor;
}

.do-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.do-footer-brand {
  font-family: var(--do-font-display);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.do-footer-tagline {
  font-family: var(--do-font-jp);
  font-size: 0.82rem;
  font-weight: 300;
  line-height: 2;
  opacity: 0.75;
  letter-spacing: 0.06em;
  max-width: 320px;
}

.do-footer-col h4 {
  font-family: var(--do-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.55;
  margin-bottom: 16px;
  font-weight: 500;
}

.do-footer-col a,
.do-footer-col p {
  display: block;
  font-family: var(--do-font-jp);
  font-size: 0.85rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  line-height: 2;
  opacity: 0.85;
}

.do-footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(0,0,0,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.do-footer-copy,
.do-footer-link {
  font-family: var(--do-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.55;
}

/* ============================================
   SETOUCHI — calm, horizon, sand
   ============================================ */
.setouchi {
  background: var(--setouchi-bg);
  color: var(--setouchi-ink);
}

.setouchi a:hover {
  color: var(--setouchi-accent);
  opacity: 1;
}

.setouchi .do-topbar.scrolled {
  background: rgba(237, 241, 240, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 12px 0;
}

.setouchi .do-hero {
  background:
    radial-gradient(1200px 600px at 20% 0%, rgba(76, 116, 121, 0.08), transparent 60%),
    linear-gradient(180deg, var(--setouchi-bg) 0%, var(--setouchi-bg-alt) 100%);
}

.setouchi .do-hero::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--setouchi-ink-soft);
  opacity: 0.18;
}

.setouchi .do-hero-horizon {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
}

.setouchi .do-hero-horizon::before,
.setouchi .do-hero-horizon::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--setouchi-ink-mute);
  opacity: 0.18;
}

.setouchi .do-hero-horizon::before { top: 62%; }
.setouchi .do-hero-horizon::after { top: 62.6%; opacity: 0.08; }

.setouchi .do-section--alt {
  background: var(--setouchi-paper);
}

.setouchi .do-services {
  background: var(--setouchi-ink-soft);
  border-color: var(--setouchi-ink-soft);
}

.setouchi .do-service-card {
  background: var(--setouchi-paper);
}

.setouchi .do-service-card:hover {
  background: var(--setouchi-bg);
}

.setouchi .do-service-tags span {
  border-color: var(--setouchi-ink-soft);
  color: var(--setouchi-ink-soft);
}

.setouchi .do-cta-btn {
  border-color: var(--setouchi-ink);
}

.setouchi .do-cta-btn:hover {
  background: var(--setouchi-ink);
  color: var(--setouchi-paper);
}

.setouchi .do-capabilities,
.setouchi .do-cap-row,
.setouchi .do-info,
.setouchi .do-footer {
  border-color: var(--setouchi-ink-soft);
}

.setouchi .do-info dt,
.setouchi .do-info dd,
.setouchi .do-footer-bottom {
  border-color: rgba(31, 42, 46, 0.08);
}

/* ============================================
   KURO — Tokyo, black, sumi, gold accent
   ============================================ */
.kuro {
  background: var(--kuro-bg);
  color: var(--kuro-ink);
}

.kuro a:hover {
  color: var(--kuro-accent);
  opacity: 1;
}

.kuro .do-topbar.scrolled {
  background: rgba(15, 15, 16, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 12px 0;
  border-bottom: 1px solid var(--kuro-line);
}

.kuro .do-hero {
  background:
    radial-gradient(800px 500px at 80% 20%, rgba(200, 169, 104, 0.08), transparent 60%),
    linear-gradient(180deg, var(--kuro-bg) 0%, var(--kuro-bg-alt) 100%);
}

.kuro .do-hero::after {
  content: '黒';
  position: absolute;
  right: -40px;
  bottom: -80px;
  font-family: var(--do-font-jp);
  font-weight: 200;
  font-size: clamp(20rem, 40vw, 40rem);
  line-height: 1;
  color: var(--kuro-ink);
  opacity: 0.04;
  pointer-events: none;
  z-index: 1;
}

.kuro .do-hero-title em {
  color: var(--kuro-accent);
}

.kuro .do-section--alt {
  background: var(--kuro-bg-alt);
}

.kuro .do-services {
  background: var(--kuro-line);
  border-color: var(--kuro-line);
}

.kuro .do-service-card {
  background: var(--kuro-bg);
}

.kuro .do-service-card:hover {
  background: var(--kuro-bg-alt);
}

.kuro .do-service-num {
  color: var(--kuro-accent);
  opacity: 0.85;
}

.kuro .do-service-tags span {
  border-color: var(--kuro-line);
  color: var(--kuro-ink-mute);
}

.kuro .do-cta-btn {
  border-color: var(--kuro-ink);
  color: var(--kuro-ink);
}

.kuro .do-cta-btn:hover {
  background: var(--kuro-accent);
  border-color: var(--kuro-accent);
  color: var(--kuro-bg);
}

.kuro .do-capabilities,
.kuro .do-cap-row,
.kuro .do-info,
.kuro .do-footer {
  border-color: var(--kuro-line);
}

.kuro .do-info dt,
.kuro .do-info dd,
.kuro .do-footer-bottom {
  border-color: rgba(242, 240, 235, 0.08);
}

.kuro .do-story-quote {
  border-color: var(--kuro-accent);
  color: var(--kuro-ink);
}

/* ============================================
   HUB (design.html) — both offices side by side
   ============================================ */
.hub {
  background: var(--do-bg);
  color: var(--do-ink);
}

.hub a:hover {
  opacity: 0.65;
}

.hub .do-topbar.scrolled {
  background: rgba(244, 242, 238, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 12px 0;
}

.hub .do-hero {
  background: linear-gradient(180deg, var(--do-bg) 0%, var(--do-bg-warm) 100%);
}

.hub .do-hero-title {
  font-size: clamp(2.6rem, 7vw, 6.4rem);
}

.hub-intro {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.hub-intro-label {
  font-family: var(--do-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  opacity: 0.55;
  position: sticky;
  top: 120px;
}

.hub-intro-body p {
  font-family: var(--do-font-jp);
  font-size: 1rem;
  font-weight: 300;
  line-height: 2.3;
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}

.hub-intro-body p:first-child {
  font-family: var(--do-font-display);
  font-size: 1.6rem;
  font-style: italic;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0;
}

.hub .do-capabilities,
.hub .do-cap-row,
.hub .do-info,
.hub .do-footer {
  border-color: var(--do-ink);
}

.hub .do-info dt,
.hub .do-info dd,
.hub .do-footer-bottom {
  border-color: rgba(26, 26, 26, 0.08);
}

/* Origin link back to Peony — subtle */
.do-origin {
  font-family: var(--do-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  opacity: 0.55;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.do-origin::before {
  content: '';
  width: 24px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

/* --- Fade in --- */
/* Default state: fully visible. Content shows even when JS or
   IntersectionObserver is unavailable. The scroll-triggered
   animation is opt-in via the .has-fade class set by JS. */
.do-fade {
  opacity: 1;
  transform: none;
}

html.has-fade .do-fade {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--do-easing), transform 0.9s var(--do-easing);
}

html.has-fade .do-fade.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .do-section { padding: 100px 0; }
  .do-section-head {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 56px;
  }
  .do-services { grid-template-columns: 1fr; }
  .do-story { grid-template-columns: 1fr; gap: 48px; }
  .do-locations { grid-template-columns: 1fr; }
  .do-info { grid-template-columns: 1fr; gap: 0; }
  .do-footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .hub-intro { grid-template-columns: 1fr; gap: 32px; }
  .hub-intro-label { position: static; }
  .do-cap-row {
    grid-template-columns: 60px 1fr;
    grid-template-areas:
      "num title"
      "num desc"
      ".   meta";
    gap: 12px 24px;
  }
  .do-cap-num { grid-area: num; }
  .do-cap-title { grid-area: title; }
  .do-cap-desc { grid-area: desc; }
  .do-cap-meta { grid-area: meta; text-align: left; }
}

@media (max-width: 720px) {
  .do-container { padding: 0 20px; }
  .do-section { padding: 72px 0; }
  .do-cta { padding: 96px 0; }
  .do-hero { padding: 130px 0 64px; }
  .do-hero-meta { gap: 24px; }

  .do-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--do-bg);
    color: var(--do-ink);
    flex-direction: column;
    align-items: flex-start;
    padding: 120px 32px 40px;
    gap: 24px;
    transition: right 0.4s var(--do-easing);
    z-index: 90;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
  }
  .kuro .do-nav { background: var(--kuro-bg-alt); color: var(--kuro-ink); }
  .setouchi .do-nav { background: var(--setouchi-paper); color: var(--setouchi-ink); }

  .do-nav.is-open { right: 0; }

  .do-nav-toggle { display: flex; z-index: 95; }

  .do-nav-toggle.is-open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .do-nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .do-nav-toggle.is-open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .do-service-card { padding: 36px 28px; }
  .do-footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .do-footer { padding: 56px 0 32px; }
  .do-footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* ============================================
   Hero background image
   ============================================ */
.do-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.do-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
}

.setouchi .do-hero-bg {
  opacity: 0.9;
  filter: brightness(1.02) saturate(1.05);
}

.setouchi .do-hero-bg::after {
  background: linear-gradient(180deg,
    rgba(237, 241, 240, 0) 0%,
    rgba(237, 241, 240, 0) 35%,
    rgba(237, 241, 240, 0.55) 75%,
    var(--setouchi-bg) 100%);
}

.kuro .do-hero-bg {
  opacity: 0.7;
  filter: grayscale(20%) brightness(0.85);
}

.kuro .do-hero-bg::after {
  background: linear-gradient(180deg,
    rgba(15, 15, 16, 0.15) 0%,
    rgba(15, 15, 16, 0.3) 50%,
    rgba(15, 15, 16, 0.85) 85%,
    var(--kuro-bg) 100%);
}

.hub .do-hero-bg {
  opacity: 0.9;
  filter: brightness(1.02) saturate(1.05);
}

.hub .do-hero-bg::after {
  background: linear-gradient(180deg,
    rgba(244, 242, 238, 0) 0%,
    rgba(244, 242, 238, 0) 35%,
    rgba(244, 242, 238, 0.55) 75%,
    var(--do-bg) 100%);
}