@charset "utf-8";

/* 既存 */
.imageBOX {
  margin: 10px 0;
}

.imageBOX img {
  margin-bottom: 10px;
}

.col dl dt span {
  margin-right: 20px;
}

#consept,
#lineup,
#DesignStyle,
#concept4 {
  margin: 100px 0;
}

#concept4 img {
  margin-bottom: 20px;
}

/* performance.css */
.highlight-spec {
  color: #BE654C;
  font-weight: bold;
}

.perf-unit,
.perf-unit sup {
  font-weight: 400;
}

.highlight-spec .perf-unit,
.highlight-spec .perf-unit sup {
  font-weight: 600;
}

.perf-note-small {
  font-size: 0.6em;
  font-weight: normal;
  display: inline-block;
  vertical-align: middle;
  margin-left: 10px;
}

.c-value-layout {
  display: flex;
  gap: 30px;
  align-items: flex-start;
}

.c-value-layout p {
  flex: 1;
}

.sokutei-image {
  flex: 1;
  width: 50%;
  height: auto;
  display: block;
  margin: 0 auto !important;
}

.construction-item {
  margin-bottom: 60px;
}

.construction-item h4 {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 20px;
  color: #333;
  border-bottom: 2px solid #BE654C;
  padding-bottom: 10px;
  text-align: center;
  margin: 0 40px 20px;
}

.construction-item img {
  margin: 30px auto;
  display: block;
}

.perf-column-section {
  padding: 0;
  background: transparent;
}

.perf-column-grid {
  width: 90%;
  max-width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.perf-column-section--single .perf-column-grid {
  grid-template-columns: 1fr;
}

.perf-column-card {
  background: transparent;
  border: 0;
  padding: 0 0 24px;
}

.perf-column-common h3.perf-column-title {
  margin-top: 30px;
  margin-bottom: 40px;
  font-size: 2.4rem;
  text-align: center;
  font-weight: 500;
  line-height: 1.5;
}

.perf-column-common.perf-column-section .perf-column-grid {
  width: 100%;
}

.perf-column-common .perf-column-card .performancetext {
  width: 94%;
  margin-left: auto;
  margin-right: auto;
}

.perf-column-card .performancetext {
  width: 100%;
  margin-bottom: 18px;
}

.perf-column-image-grid {
  width: 94%;
  max-width: 100%;
  margin: 34px auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.perf-column-image-grid img {
  width: 100% !important;
  margin: 0 !important;
  display: block;
}

.perf-column-card > :last-child {
  margin-bottom: 0;
}

.perf-source-title {
  margin: 22px 0 6px;
  font-size: 1.05rem;
  font-weight: 500;
  color: #8a8a8a;
  text-align: center;
  letter-spacing: 0.08em;
}

.perf-source-list {
  width: fit-content;
  max-width: 90%;
  margin: 0 auto 20px;
  padding-left: 20px;
  text-align: left;
}

.perf-source-list li {
  margin-bottom: 4px;
  font-size: 1.05rem;
  line-height: 1.6;
  color: #767676;
}

.perf-source-list a {
  color: #6b7378;
  text-decoration: none;
  border-bottom: 1px solid rgba(107, 115, 120, 0.35);
}

.perf-note-text {
  width: fit-content;
  max-width: 90%;
  margin: 8px auto 0;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #777;
  text-align: center;
}

.performance-tabs {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 2rem 0 100px;
  font-size: 1.8rem;
}

.performance-tabs.performance-tabs--bottom {
  margin: 110px 0 120px;
}

body.perf-quicknav-open {
  overflow: hidden;
}

.perf-quicknav {
  display: block;
  position: fixed;
  right: 20px;
  bottom: 90px;
  z-index: 1200;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.perf-quicknav.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.perf-quicknav[hidden] {
  display: none !important;
}

.perf-quicknav-toggle {
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid #3f5158;
  border-radius: 999px;
  background: #3f5158;
  color: #fff;
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.perf-quicknav-panel {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 1400;
}

.perf-quicknav-panel[hidden] {
  display: none !important;
}

.perf-quicknav-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(0, 0, 0, 0.35);
}

.perf-quicknav-sheet {
  position: absolute;
  right: 20px;
  bottom: 86px;
  width: 290px;
  background: #fff;
  border-radius: 14px;
  padding: 14px;
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.2);
}

.perf-quicknav-title {
  margin: 0 0 8px;
  text-align: center;
  font-size: 1.35rem;
  font-weight: 700;
  color: #333;
}

.perf-quicknav-links {
  display: grid;
  gap: 8px;
}

.perf-quicknav-link {
  display: block;
  padding: 10px 10px;
  border: 1px solid #3f5158;
  background: #fff;
  color: #3f5158;
  font-size: 1.3rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  line-height: 1.4;
}

.perf-quicknav-link.is-active {
  background: #3f5158;
  color: #fff;
}

.tab-link {
  background: #3D525C;
  color: #fff;
  padding: 1.5rem;
  width: 320px;
  height: 90px;
  text-align: center;
  text-decoration: none;
  font-weight: bold;
  opacity: 0.5;
  transition: opacity 0.3s;
}

.tab-link span {
  font-size: 0.9em;
  display: block;
  font-weight: 300;
}

.tab-link:hover {
  opacity: 0.3;
  color: #fff;
}

.tab-link.is-active {
  opacity: 1;
}


.performance-section .perf-block {
  margin-top: 140px;
}

.performance-section .perf-block:first-child {
  margin-top: 0;
}

/* 見出し */
.performance-section h3 {
  font-size: 2.4rem;
  text-align: center;
  font-weight: 500;
  margin-bottom: 40px;
  margin-top: 30px;
}

/* Column_space（コラム箱） */
.Column_space {
  width: 800px;
  background-color: #F4F0EB;
  margin: 0 auto;
  /* 中央寄せ */
  padding: 10px;
}

.Column_space img {
  width: 90%;
  margin: 40px auto;
  display: block;
}

.performance-section img {
  margin-top: 50px;
}

.performancetext {
  text-align: center;
  font-size: 1.6rem;
  width: 94%;
  margin: 0 auto;
}

/* 5つのこと */
.feature-cards {
  padding: 24px 16px;
  margin-bottom: 60px;
}

.bottom100 {
  margin-bottom: 100px !important;
}

.feature-grid {
  max-width: 980px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 28px;
}

.feature-card {
  position: relative;
  background: #fff;
  border: 1px solid #6c6c6c;
  padding: 44px 22px 22px;
  grid-column: span 2;
  display: flex;
  flex-direction: column;
}

.feature-card h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
}

/* seismic page: structural calculation section */
.perf-metric-primary+.perf-metric-primary {
  margin-top: 80px;
}

.perf-metric-secondary > .performancetext:first-of-type {
  margin-bottom: 60px;
}

.perf-metric-secondary .c-value-layout .performancetext {
  font-size: 1.45rem;
  text-align: left;
}

.performance-section .seismic-calc-image,
.performance-section .seismic-kdamper-image {
  width: 90%;
  max-width: 980px;
  margin: 30px auto 0;
  display: block;
}

/* spacing between metric blocks (match perf-block rhythm) */
.perf-kijyun .perf-metric-primary + .perf-metric-primary,
.perf-kijyun .perf-metric-primary + .perf-metric-secondary {
  margin-top: 140px;
}

.seismic-kinzoku-grid {
  width: 90%;
  margin: 40px auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.seismic-kinzoku-title {
  margin: 28px auto 0;
  width: 90%;
  font-size: 1.75rem;
  font-weight: bold;
  line-height: 1.5;
  text-align: center;
  color: #333;
}

.seismic-kinzoku-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #fff;
  border: 1px solid #6c6c6c;
  overflow: hidden;
}

.seismic-kinzoku-card--visual {
  background: #fff;
}

.performance-section .seismic-kinzoku-card img {
  width: calc(100% - 30px);
  margin: 16px auto 12px;
  display: block;
}

.seismic-kinzoku-card h5,
.seismic-support-card h5,
.seismic-se-card h5 {
  margin: 0;
  padding: 14px 16px;
  background: #3d525c;
  color: #fff;
  font-size: 1.45rem;
  line-height: 1.5;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.seismic-kinzoku-card .performancetext,
.seismic-support-card .performancetext {
  width: calc(100% - 30px);
  margin: 0 auto 16px;
  font-size: 1.25rem;
  line-height: 1.75;
  text-align: left;
  color: #555;
}

.seismic-support-grid {
  width: 90%;
  margin: 30px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.seismic-support-card {
  background: #fff;
  border: 1px solid #6c6c6c;
  overflow: hidden;
}

.seismic-support-card h5 {
  font-size: 1.22rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
  min-height: 50px;
}

.seismic-support-card .performancetext {
  margin-top: 10px;
}

.seismic-se-grid {
  width: 90%;
  margin: 30px auto 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.seismic-se-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #6c6c6c;
  overflow: hidden;
}

.seismic-se-list {
  margin: 0;
  width: calc(100% - 30px);
  padding: 16px 0 0;
  margin-left: auto;
  margin-right: auto;
  list-style-position: inside;
  font-size: 1.25rem;
  line-height: 1.75;
  color: #555;
}

.seismic-se-list li {
  margin-bottom: 8px;
}

.performance-section .seismic-se-card img {
  width: calc(100% - 30px);
  margin: auto auto 16px;
  display: block;
}

.airtight-detail-grid {
  width: 90%;
  margin: 34px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.airtight-detail-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #6c6c6c;
  overflow: hidden;
}

.airtight-detail-card h5 {
  margin: 0;
  padding: 14px 16px;
  background: #3d525c;
  color: #fff;
  font-size: 1.35rem;
  line-height: 1.5;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.performance-section .airtight-detail-image {
  width: calc(100% - 30px);
  margin: 16px auto 12px;
  display: block;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.airtight-detail-card .performancetext {
  width: calc(100% - 30px);
  margin: 0 auto 16px;
  font-size: 1.2rem;
  line-height: 1.75;
  text-align: left;
}

/* seismic page: foundation note */
.perf-foundation .performancetext span {
  font-size: 0.9em;
  color: #666;
}

/* seismic page: selection section */
.perf-selection {
  text-align: center;
  padding: 0 16px;
}

/* ventilation page support blocks */
.ventilation-point-grid {
  max-width: 980px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.perf-methods-head {
  padding: 10px;
  background: transparent;
}

.perf-methods-panel {
  padding: 56px 0;
  background: #edf2f4;
}

.perf-methods-head.Column_space,
.perf-methods-panel.Column_space {
  width: 1000px;
  max-width: calc(100% - 32px);
}

.performance-section .perf-methods-panel.perf-block {
  margin-top: 40px;
}

.perf-methods-head .performancetext,
.perf-methods-panel > .performancetext,
.perf-methods-panel > h3 {
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}

.perf-methods-head .performancetext {
  width: 100%;
  margin-top: 18px;
}

.perf-methods-panel > img {
  width: 90%;
  max-width: 980px;
  margin: 30px auto 0;
  display: block;
}

.perf-methods-panel .construction-item:last-child {
  margin-bottom: 0;
}

.perf-foundation-item {
  width: 90%;
  margin: 140px auto 0;
}

.perf-foundation-item h3,
.perf-foundation-item .performancetext {
  width: 100%;
}

.perf-foundation-item h3 {
  margin-bottom: 24px;
}

.ventilation-system-name {
  font-size: 0.82em;
  font-weight: 400;
}

.ventilation-image-note {
  width: 90%;
  margin: 24px auto 0;
  text-align: center;
  line-height: 1.9;
}

.ventilation-point {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #fff;
  border: 1px solid #6c6c6c;
  overflow: hidden;
}

.performance-section .ventilation-point img {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 0;
}

.ventilation-point h3 {
  margin: 0;
  padding: 12px 16px;
  min-height: 96px;
  background: #3d525c;
  color: #fff;
  font-size: 1.6rem;
  line-height: 1.35;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: normal;
  line-break: strict;
}

.ventilation-point .performancetext {
  width: calc(100% - 30px);
  margin: 16px auto 18px;
  min-height: 108px;
  text-align: left;
}

/* seismic page: method description */
.perf-airtight-how>.performancetext:first-of-type {
  margin-bottom: 40px;
}

.perf-passive-design .passive-design-lightbox {
  width: 100%;
  margin: 32px auto 0;
}

.perf-passive-design .passive-design-lightbox a {
  display: block;
  width: 100%;
}

.perf-passive-design .perf-passive-design-image {
  width: 100%;
  max-width: 100%;
  margin: 0 !important;
  display: block;
}

.perf-passive-design .perf-passive-cta {
  margin: 4px auto 14px;
  text-align: center;
}

.perf-passive-design .perf-passive-cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  border: 1px solid #3f5158;
  background: #3f5158;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: opacity 0.2s ease;
}

.perf-passive-design .perf-passive-cta-button:hover {
  opacity: 0.85;
  color: #fff;
}

/* seismic page: construction item subtitle */
.construction-item .performancetext:first-of-type {
  font-weight: bold;
  margin-bottom: 20px;
}

/* seismic page: feature list */
.construction-item ul {
  text-align: left;
  margin: 30px auto;
  display: block;
  width: fit-content;
  list-style: disc;
  padding-left: 20px;
}

.construction-item ul li {
  margin-bottom: 10px;
}

/* 4と5だけ中央寄せ */
.feature-card:nth-child(4) {
  grid-column: 2 / span 2;
}

.feature-card:nth-child(5) {
  grid-column: 4 / span 2;
}

/* バッジ */
.feature-badge {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 999px;
  background: #3f5158;
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
  font-size: 20px;
}

.performance-section h3.feature-title {
  margin: 0 0 12px;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: #333;
  text-align: justify;
}

.kijyun img {
  margin: 60px auto;
  display: block;
}

.perf-metric-tertiary {
  margin-top: 60px;
}

.perf-metric-tertiary .performancetext {
  margin-bottom: 30px;
}

.perf-foundation .performancetext:last-of-type {
  margin-top: 30px;
  margin-bottom: 30px;
}

.perf-foundation-item .performancetext:last-of-type {
  margin-top: 30px;
  margin-bottom: 30px;
}

.perf-foundation .perf-comparison-scroll {
  padding-top: 0;
}

.perf-foundation .perf-lightbox-wrap .perf-comparison-table {
  margin-top: 24px;
}

.perf-foundation-item .perf-comparison-scroll {
  padding-top: 0;
}

.perf-foundation-item .perf-lightbox-wrap .perf-comparison-table {
  margin-top: 24px;
}

/* perf-comparison-scroll */
.perf-comparison-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  padding: 10px 0;
}

.perf-comparison-scroll img {
  display: block;
  width: auto;
  height: 250px;
  max-width: none;
}

.perf-comparison-scroll::-webkit-scrollbar {
  height: 6px;
}

.perf-comparison-scroll::-webkit-scrollbar-track {
  background: #f1f1f1;
}

.perf-comparison-scroll::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 3px;
}

.perf-comparison-scroll::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* lightbox note (PC only) */
.perf-lightbox-wrap {
  width: 90%;
  margin: 0 auto;
}

.perf-lightbox-wrap a {
  display: block;
}

.perf-lightbox-wrap .perf-comparison-table {
  width: 100%;
  margin: 50px 0 0;
}

.perf-lightbox-note {
  display: block;
  margin-top: 4px;
  margin-bottom: 30px;
  font-size: 12px;
  color: #666;
  line-height: 1.2;
  text-align: right;
}

/* SP */
@media only screen and (max-width: 767px) {
  body.perf-quicknav-open {
    overflow: hidden;
  }

  .perf-quicknav {
    display: block;
    position: fixed;
    right: 12px;
    bottom: calc(72px + env(safe-area-inset-bottom));
    z-index: 1200;
    transform: translateY(10px);
  }

  .perf-quicknav[hidden] {
    display: none !important;
  }

  .perf-quicknav-toggle {
    min-height: 42px;
    padding: 0 14px;
    border: 1px solid #3f5158;
    border-radius: 999px;
    background: #3f5158;
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.02em;
    white-space: nowrap;
  }

  .perf-quicknav-panel {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 1400;
  }

  .perf-quicknav-panel[hidden] {
    display: none !important;
  }

  .perf-quicknav-backdrop {
    position: absolute;
    inset: 0;
    border: 0;
    background: rgba(0, 0, 0, 0.35);
  }

  .perf-quicknav-sheet {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    border-radius: 16px 16px 0 0;
    padding: 18px 16px calc(14px + env(safe-area-inset-bottom));
    box-shadow: 0 -12px 28px rgba(0, 0, 0, 0.2);
  }

  .perf-quicknav-title {
    margin: 0 0 10px;
    text-align: center;
    font-size: 1.4rem;
    font-weight: 700;
    color: #333;
  }

  .perf-quicknav-links {
    display: grid;
    gap: 8px;
  }

  .perf-quicknav-link {
    display: block;
    padding: 12px 10px;
    border: 1px solid #3f5158;
    background: #fff;
    color: #3f5158;
    font-size: 1.35rem;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    line-height: 1.4;
  }

  .perf-quicknav-link.is-active {
    background: #3f5158;
    color: #fff;
  }

  h2 {
    font-size: 2rem;
  }

  .performancetext {
    font-size: 1.3rem;
  }

  .performance-section h3 {
    font-size: 2rem;
  }

  .performance-section .perf-block {
    margin-top: 100px;
  }

  .Column_space {
    width: 100%;
  }

  .perf-standards.Column_space,
  .perf-column-section.Column_space {
    padding-top: 38px;
  }

  .performance-tabs {
    width: 90%;
    gap: 10px;
    font-size: 1.2rem;
    margin: 0 auto 100px;
    line-height: 1.2;
  }

  .performance-tabs.performance-tabs--bottom {
    margin: 72px auto 92px;
  }

  .tab-link {
    height: auto;
  }

  .tab-link span {
    font-size: 1em;
    margin-top: 10px;
  }

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

  .feature-card,
  .feature-card:nth-child(-n + 3),
  .feature-card:nth-child(n + 4) {
    grid-column: auto;
    padding: 30px 20px 20px;
  }

  .performance-section h3.feature-title {
    min-height: 0;
    display: block;
    margin: 10px 0 14px;
  }

  .kijyun img {
    width: 90%;
  }

  .perf-metric-secondary {
    margin-top: 60px;
  }

  .perf-kijyun .perf-metric-primary + .perf-metric-primary,
  .perf-kijyun .perf-metric-primary + .perf-metric-secondary {
    margin-top: 100px;
  }

  .seismic-kinzoku-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .airtight-detail-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .airtight-detail-card h5 {
    font-size: 1.25rem;
    min-height: 64px;
  }

  .seismic-support-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .seismic-se-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .seismic-kinzoku-card {
    padding: 0;
  }

  .seismic-kinzoku-title {
    font-size: 1.45rem;
    margin-top: 24px;
  }

  .construction-item h4 {
    font-size: 1.55rem;
    line-height: 1.5;
    margin: 0 16px 18px;
  }

  .seismic-kinzoku-card h5,
  .seismic-se-card h5 {
    padding: 12px 10px;
    font-size: 1.05rem;
    min-height: 56px;
  }

  .seismic-support-card h5 {
    padding: 12px 6px;
    font-size: 0.92rem;
    letter-spacing: -0.03em;
    white-space: nowrap;
    min-height: 40px;
  }

  .seismic-kinzoku-card .performancetext,
  .seismic-support-card .performancetext,
  .seismic-se-list {
    font-size: 1.2rem;
    line-height: 1.7;
  }

  .perf-metric-secondary .c-value-layout .performancetext {
    font-size: 1.3rem;
    text-align: center;
  }

  .seismic-support-card,
  .seismic-se-card {
    padding: 0;
  }

  .seismic-se-list {
    width: calc(100% - 24px);
    padding-top: 14px;
  }

  .performance-section .seismic-se-card img {
    width: calc(100% - 24px);
    margin: 14px auto 14px;
  }

  .performance-section .seismic-kinzoku-card img {
    width: calc(100% - 24px);
    margin: 14px auto 10px;
  }

  .seismic-kinzoku-card .performancetext,
  .seismic-support-card .performancetext {
    width: calc(100% - 24px);
    margin-bottom: 14px;
  }

  .c-value-layout {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .c-value-layout p {
    flex: none;
  }

  .sokutei-image {
    flex: none;
  }

  .perf-comparison {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .perf-comparison-scroll {
    margin-top: 0;
    margin-bottom: 0;
  }

  .perf-comparison-scroll img {
    margin: 0;
  }

  .perf-comparison>img.sp {
    margin-top: 50px;
    margin-bottom: 50px;
  }

  .perf-comparison-scroll .perf-comparison-table {
    min-width: 0;
    width: auto;
    height: 250px;
    display: block;
  }

  .performance-section .perf-comparison-scroll .perf-comparison-table {
    width: auto !important;
    max-width: none !important;
    min-width: 0 !important;
    height: 250px !important;
    margin: 0 !important;
    display: block !important;
  }

  .perf-passive-design .passive-design-lightbox {
    width: 100%;
  }

  .perf-passive-design .perf-passive-cta {
    margin: 8px auto 6px;
  }

  .perf-passive-design .perf-passive-cta-button {
    min-height: 44px;
    padding: 0 20px;
    font-size: 1.35rem;
  }

  .ventilation-point-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .perf-column-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .perf-column-card {
    padding: 0;
  }

  .perf-column-image-grid {
    width: 100%;
    max-width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin: 28px auto;
  }

  .perf-column-image-grid img {
    aspect-ratio: 1 / 1;
    object-fit: cover;
  }

  .perf-column-common h3.perf-column-title {
    font-size: 2rem;
  }

  .ventilation-point h3 {
    padding: 10px 10px;
    min-height: 72px;
    font-size: 1.24rem;
    line-height: 1.3;
  }

  .ventilation-point .performancetext {
    width: calc(100% - 24px);
    margin: 14px auto 16px;
    min-height: 0;
  }

  .perf-methods-panel,
  .perf-column-section {
    padding: 38px 0;
  }

  .perf-methods-head {
    padding: 10px;
  }
}

/* PC */
@media only screen and (min-width: 768px) {
  .imageBOX {
    margin: 50px 0;
  }

  .performance-section .seismic-calc-image {
    max-width: 500px;
  }

  .imageBOX img {
    width: 49%;
    margin: 0;
  }

  #consept,
  #lineup,
  #DesignStyle,
  #concept4,
  .footBanner {
    margin: 150px auto;
  }

  .button {
    margin: 75px auto 0;
  }

  #concept4 img {
    width: 49%;
    margin: 0;
  }

  /* JSで高さ揃えるけど、初期値はautoでOK */
  .feature-card {
    height: auto;
  }

  /* 行間を広げる */
  .feature-grid {
    column-gap: 20px;
    row-gap: 80px;
  }
}