/* ============================================
   住まいの設計室 - Style Sheet
   Architect Minimal Design
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --white: #FFFFFF;
  --bg: #F8F8F8;
  --blue: #3B6B9A;
  --blue-light: #E8EEF4;
  --blue-dark: #2A4F73;
  --text: #1A1A1A;
  --text-light: #6B6B6B;
  --text-muted: #9A9A9A;
  --border: #E0E0E0;
  --border-light: #F0F0F0;
  --font-en: 'DM Sans', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --header-h: 72px;
  --banner-h: 36px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--banner-h));
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-jp);
  font-weight: 400;
  color: var(--text);
  background: var(--white);
  line-height: 1.8;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

sup {
  font-size: 0.65em;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 120px 0;
}

.sp-hide {
  display: inline;
}

/* --- Sample Banner --- */
.sample-banner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--banner-h);
  background: var(--blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  z-index: 1100;
}

.sample-banner a {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* --- Header --- */
.header {
  position: fixed;
  top: var(--banner-h);
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

.header.scrolled {
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  flex-shrink: 0;
}

.logo-text {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-desktop a {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-light);
  position: relative;
  transition: color 0.3s ease;
}

.nav-desktop a:hover {
  color: var(--text);
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--blue);
  transition: width 0.3s var(--ease);
}

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

.nav-cta {
  padding: 8px 20px;
  border: 1px solid var(--blue);
  color: var(--blue) !important;
  font-weight: 500 !important;
  transition: all 0.3s ease !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--blue);
  color: var(--white) !important;
}

/* --- Hamburger --- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  gap: 6px;
  z-index: 1200;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: all 0.3s var(--ease);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* --- Mobile Nav --- */
.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background: var(--white);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s var(--ease), visibility 0.4s;
}

.mobile-nav.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-inner {
  padding: 24px 32px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 48px;
  padding-top: var(--banner-h);
}

.mobile-nav-close {
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-nav-links a {
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.06em;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-light);
  color: var(--text);
  transition: color 0.3s ease;
}

.mobile-nav-links a:first-child {
  border-top: 1px solid var(--border-light);
}

.mobile-nav-links a:hover {
  color: var(--blue);
}

.mobile-nav-info {
  margin-top: auto;
  padding-bottom: 32px;
}

.mobile-nav-phone {
  font-family: var(--font-en);
  font-size: 24px;
  font-weight: 500;
  color: var(--blue);
  letter-spacing: 0.04em;
}

.mobile-nav-hours {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-jp);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 14px 32px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}

.btn-primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--text);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 16px;
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  padding-top: calc(var(--header-h) + var(--banner-h) + 60px);
  padding-bottom: 60px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(59, 107, 154, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 107, 154, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-label {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--blue);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 15px;
  color: var(--text-light);
  line-height: 2;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 28px;
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-stat-num {
  font-family: var(--font-en);
  font-size: 36px;
  font-weight: 600;
  color: var(--blue);
  line-height: 1.2;
}

.hero-stat-unit {
  font-size: 14px;
  color: var(--blue);
  margin-left: 2px;
}

.hero-stat-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.hero-stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

.hero-image {
  position: relative;
}

.hero-image-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
}

.hero-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-blueprint-accent {
  position: absolute;
  bottom: -30px;
  left: -30px;
  opacity: 0.5;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hero-scroll span {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--blue);
  animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
  0% { top: -100%; }
  100% { top: 100%; }
}

/* --- Section Common --- */
.section-label {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.25em;
  color: var(--blue);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-light);
  line-height: 2;
  margin-bottom: 48px;
}

/* --- About --- */
.about {
  background: var(--bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-top: 48px;
}

.about-illustration {
  display: flex;
  justify-content: center;
}

.couple-svg {
  width: 100%;
  max-width: 360px;
}

.about-lead {
  font-size: 20px;
  font-weight: 500;
  line-height: 1.8;
  margin-bottom: 24px;
  color: var(--text);
}

.about-text {
  font-size: 14px;
  color: var(--text-light);
  line-height: 2;
  margin-bottom: 16px;
}

.about-numbers {
  display: flex;
  gap: 32px;
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}

.about-number {
  display: flex;
  flex-direction: column;
}

.about-number-value {
  font-family: var(--font-en);
  font-size: 40px;
  font-weight: 600;
  color: var(--blue);
  line-height: 1.2;
}

.about-number-unit {
  font-size: 14px;
  color: var(--blue);
}

.about-number-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Hearing --- */
.hearing {
  background: var(--white);
}

.hearing-visual {
  display: flex;
  justify-content: center;
  margin-bottom: 64px;
}

.hearing-center {
  width: 160px;
  height: 160px;
}

.hearing-circle-svg {
  width: 100%;
  height: 100%;
}

.hearing-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.hearing-cat {
  padding: 32px;
  background: var(--bg);
  border: 1px solid var(--border-light);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.hearing-cat:hover {
  border-color: var(--blue);
  box-shadow: 0 4px 24px rgba(59, 107, 154, 0.06);
}

.hearing-cat-num {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 500;
  color: var(--blue);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.hearing-cat-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.hearing-cat-desc {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 16px;
}

.hearing-cat-questions {
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

.hearing-cat-questions li {
  font-size: 12px;
  color: var(--text-muted);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}

.hearing-cat-questions li::before {
  content: 'Q.';
  position: absolute;
  left: 0;
  font-family: var(--font-en);
  font-weight: 500;
  color: var(--blue);
  font-size: 11px;
}

/* --- Design --- */
.design {
  background: var(--bg);
}

.design-cards {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.design-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.design-card:hover {
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.04);
}

.design-card:nth-child(even) {
  direction: rtl;
}

.design-card:nth-child(even) > * {
  direction: ltr;
}

.design-card-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.design-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.design-card:hover .design-card-image img {
  transform: scale(1.03);
}

.design-card-content {
  padding: 48px;
}

.design-card-num {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 500;
  color: var(--blue);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.design-card-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.design-card-text {
  font-size: 14px;
  color: var(--text-light);
  line-height: 2;
}

/* --- Works --- */
.works {
  background: var(--white);
}

.works-grid {
  display: flex;
  flex-direction: column;
  gap: 80px;
  margin-top: 48px;
}

.works-item {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.works-item:nth-child(even) {
  grid-template-columns: 1fr 1.2fr;
}

.works-item:nth-child(even) .works-item-image {
  order: 2;
}

.works-item-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  cursor: pointer;
}

.works-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.works-item-image:hover img {
  transform: scale(1.04);
}

.works-item-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(59, 107, 154, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.works-item-image:hover .works-item-overlay {
  opacity: 1;
}

.works-item-overlay span {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--white);
  padding: 10px 24px;
  border: 1px solid var(--white);
}

.works-item-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  color: var(--blue);
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border: 1px solid var(--blue);
  margin-bottom: 12px;
}

.works-item-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.works-item-data {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-family: var(--font-en);
  letter-spacing: 0.02em;
}

.works-item-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 2;
}

/* --- Voices --- */
.voices {
  background: var(--bg);
}

.voices-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.voice-card {
  background: var(--white);
  padding: 36px;
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s ease;
}

.voice-card:hover {
  border-color: var(--blue);
}

.voice-card-quote {
  margin-bottom: 16px;
}

.voice-card-text {
  font-size: 14px;
  line-height: 2;
  color: var(--text-light);
  flex: 1;
  margin-bottom: 24px;
}

.voice-card-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}

.voice-card-initial {
  width: 40px;
  height: 40px;
  background: var(--blue-light);
  color: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 500;
  flex-shrink: 0;
}

.voice-card-name {
  font-size: 14px;
  font-weight: 500;
}

.voice-card-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* --- Company --- */
.company {
  background: var(--white);
}

.company-table-wrap {
  margin-top: 48px;
  max-width: 720px;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
}

.company-table tr {
  border-bottom: 1px solid var(--border-light);
}

.company-table th,
.company-table td {
  padding: 16px 0;
  font-size: 14px;
  vertical-align: top;
  text-align: left;
}

.company-table th {
  width: 140px;
  color: var(--text-muted);
  font-weight: 400;
  font-size: 13px;
  padding-right: 24px;
}

.company-table td {
  color: var(--text);
  line-height: 1.8;
}

.company-map {
  margin-top: 48px;
}

.company-map-placeholder {
  background: var(--bg);
  border: 1px solid var(--border-light);
  padding: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
}

.company-map-placeholder p {
  font-size: 14px;
  color: var(--text-light);
}

.company-map-sub {
  font-size: 11px !important;
  color: var(--text-muted) !important;
}

/* --- Flow --- */
.flow {
  background: var(--white);
  border-top: 1px solid var(--border-light);
}

.flow-steps {
  max-width: 680px;
  margin: 0 auto;
  margin-top: 48px;
}

.flow-step {
  display: flex;
  gap: 32px;
}

.flow-step-num {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 48px;
}

.flow-step-num span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--blue);
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  color: var(--blue);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.flow-step-line {
  width: 1px;
  flex: 1;
  background: var(--border);
  min-height: 24px;
}

.flow-step-content {
  padding-bottom: 40px;
}

.flow-step:last-child .flow-step-content {
  padding-bottom: 0;
}

.flow-step-title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  padding-top: 12px;
}

.flow-step-text {
  font-size: 13px;
  color: var(--text-light);
  line-height: 2;
  margin-bottom: 8px;
}

.flow-step-duration {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  color: var(--blue);
  padding: 3px 10px;
  background: var(--blue-light);
  letter-spacing: 0.04em;
}

/* --- Contact --- */
.contact {
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.contact-inner {
  position: relative;
  text-align: center;
  padding: 80px 40px;
  background: var(--white);
  border: 1px solid var(--border-light);
  overflow: hidden;
}

.contact-blueprint {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.contact-blueprint-svg {
  width: 100%;
  height: 100%;
}

.contact-title {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  position: relative;
}

.contact-desc {
  font-size: 15px;
  color: var(--text-light);
  line-height: 2;
  margin-bottom: 36px;
  position: relative;
}

.contact-actions {
  position: relative;
  margin-bottom: 24px;
}

.contact-hours {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
}

.contact-free {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-light);
}

.contact-free-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 3px 12px;
  background: var(--blue-light);
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* --- Footer --- */
.footer {
  background: var(--white);
  border-top: 1px solid var(--border-light);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.footer-name-en {
  font-family: var(--font-en);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  margin-top: 2px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.footer-links a {
  font-size: 12px;
  color: var(--text-muted);
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--text);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
  width: 100%;
}

.footer-copy {
  font-size: 11px;
  color: var(--text-muted);
}

.footer-credit {
  font-size: 11px;
  color: var(--text-muted);
}

.footer-credit a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* --- Scroll Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive: Tablet --- */
@media (max-width: 960px) {
  .nav-desktop {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-image {
    max-width: 480px;
    margin: 0 auto;
  }

  .hero-image-frame {
    aspect-ratio: 3 / 2;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-illustration {
    order: -1;
  }

  .couple-svg {
    max-width: 280px;
  }

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

  .design-card {
    grid-template-columns: 1fr;
  }

  .design-card:nth-child(even) {
    direction: ltr;
  }

  .design-card-content {
    padding: 32px;
  }

  .works-item {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .works-item:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .works-item:nth-child(even) .works-item-image {
    order: 0;
  }

  .voices-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* --- Responsive: Mobile --- */
@media (max-width: 640px) {
  :root {
    --header-h: 60px;
  }

  body {
    font-size: 14px;
  }

  .sp-hide {
    display: none;
  }

  .container {
    padding: 0 20px;
  }

  .section {
    padding: 80px 0;
  }

  .header-inner {
    padding: 0 20px;
  }

  .hero {
    padding-top: calc(var(--header-h) + var(--banner-h) + 40px);
    min-height: auto;
    padding-bottom: 80px;
  }

  .hero-inner {
    padding: 0 20px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-sub {
    font-size: 14px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-stats {
    gap: 16px;
    flex-wrap: wrap;
  }

  .hero-stat-num {
    font-size: 28px;
  }

  .hero-scroll {
    display: none;
  }

  .hero-blueprint-accent {
    display: none;
  }

  .section-title {
    font-size: 24px;
  }

  .about-numbers {
    gap: 20px;
  }

  .about-number-value {
    font-size: 32px;
  }

  .hearing-categories {
    grid-template-columns: 1fr;
  }

  .hearing-cat {
    padding: 24px;
  }

  .design-card-content {
    padding: 24px;
  }

  .design-card-title {
    font-size: 18px;
  }

  .works-item-title {
    font-size: 18px;
  }

  .voice-card {
    padding: 24px;
  }

  .company-table th {
    width: 100px;
    font-size: 12px;
  }

  .company-table td {
    font-size: 13px;
  }

  .flow-step {
    gap: 20px;
  }

  .flow-step-num {
    width: 36px;
  }

  .flow-step-num span {
    width: 36px;
    height: 36px;
    font-size: 12px;
  }

  .flow-step-title {
    font-size: 15px;
    padding-top: 6px;
  }

  .flow-step-content {
    padding-bottom: 28px;
  }

  .company-map-placeholder {
    padding: 40px 20px;
  }

  .contact-inner {
    padding: 48px 24px;
  }

  .contact-title {
    font-size: 22px;
  }

  .btn-lg {
    padding: 16px 32px;
    font-size: 15px;
    width: 100%;
  }

  .footer-links {
    gap: 16px;
  }
}

/* --- Print --- */
@media print {
  .sample-banner,
  .header,
  .mobile-nav,
  .hamburger,
  .hero-scroll {
    display: none !important;
  }

  .hero {
    padding-top: 0;
    min-height: auto;
  }

  .section {
    padding: 40px 0;
  }

  .fade-up {
    opacity: 1 !important;
    transform: none !important;
  }
}