@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700&display=swap");

/* PC正本: Figma 634:2 / Section01 934:39。基本寸法はpxで管理する。 */
.gakuzo-3m-gas-mask {
  box-sizing: border-box;
  container: gakuzo-gas-mask / inline-size;
  width: 100%;
  max-width: 950px;
  margin: 0 auto;
  background: #fff;
  color: #1f304d;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  letter-spacing: 0;
  text-align: left;
  overflow-wrap: break-word;
}

.gakuzo-3m-gas-mask *,
.gakuzo-3m-gas-mask *::before,
.gakuzo-3m-gas-mask *::after {
  box-sizing: border-box;
}

/* Bカートの共通section余白をリセット。上余白は標準テーマの高詳細度指定より優先する。 */
.gakuzo-3m-gas-mask section {
  margin-top: 0 !important;
  margin-bottom: 0;
}

.gakuzo-3m-gas-mask :is(h2, h3, h4, p, ol) {
  margin: 0;
  padding: 0;
  border: 0;
}

.gakuzo-3m-gas-mask :is(h2, h3, h4, p, .gas-section-number > span) {
  text-box-trim: trim-both;
  text-box-edge: cap alphabetic;
}

.gakuzo-3m-gas-mask img {
  display: block;
  max-width: none;
  border: 0;
}

.gakuzo-3m-gas-mask .gas-about-visual {
  position: relative;
  isolation: isolate;
  padding: 40px 32px 0;
}

.gakuzo-3m-gas-mask .gas-about-background {
  position: absolute;
  z-index: -1;
  top: 0;
  right: 0;
  left: 0;
  height: 380px;
  overflow: hidden;
  pointer-events: none;
}

.gakuzo-3m-gas-mask .gas-about-background img {
  position: absolute;
  top: -58px;
  left: -269px;
  width: 1314px;
  height: 438px;
}

.gakuzo-3m-gas-mask .gas-about-background::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.35) 0%, rgba(255, 255, 255, 0.8) 22%, rgba(255, 255, 255, 0.96) 46%, rgba(255, 255, 255, 0.91) 62%, rgba(255, 255, 255, 0.48) 82%, rgba(255, 255, 255, 0.04) 100%);
}

.gakuzo-3m-gas-mask .gas-section-heading {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.gakuzo-3m-gas-mask .gas-section-number {
  position: relative;
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
}

.gakuzo-3m-gas-mask .gas-section-number > span {
  position: absolute;
  top: 16px;
  left: 0;
  width: 56px;
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  line-height: normal; /* FigmaのAUTO設定を維持。 */
  text-align: center;
}

.gakuzo-3m-gas-mask .gas-heading-copy {
  display: flex;
  flex: 0 1 600px;
  flex-direction: column;
  gap: 32px;
  min-width: 0;
  padding-top: 8px;
}

.gakuzo-3m-gas-mask .gas-heading-copy h2 {
  color: #0a2b57;
  font-size: 32px;
  font-weight: 700;
  line-height: 48px;
  letter-spacing: -0.96px;
}

.gakuzo-3m-gas-mask .gas-heading-copy p {
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
}

.gakuzo-3m-gas-mask .gas-subheading {
  position: relative;
  margin-top: 32px;
  padding-left: 36px;
  color: #0a2b57;
  font-size: 24px;
  font-weight: 700;
  line-height: 32px;
}

.gakuzo-3m-gas-mask .gas-subheading::before {
  position: absolute;
  left: 12px;
  content: "•";
}

.gakuzo-3m-gas-mask .gas-process {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  margin-top: 24px;
  list-style: none;
}

.gakuzo-3m-gas-mask .gas-process-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  min-width: 0;
  margin: 0;
  padding: 16px 24px;
  border: 1px solid #d1e5f5;
  border-radius: 4px;
  background: #fff;
  list-style: none;
}

.gakuzo-3m-gas-mask .gas-process-card:not(:last-child)::after {
  position: absolute;
  top: 81px;
  right: -25px;
  width: 14px;
  height: 12px;
  content: "";
  background: url("common/arrow.svg") no-repeat center;
}

.gakuzo-3m-gas-mask .gas-process-card h4 {
  width: 226px;
  color: #0a2b57;
  font-size: 16px;
  font-weight: 700;
  line-height: 24px;
  text-align: center;
}

.gakuzo-3m-gas-mask .gas-process-icon {
  flex: 0 0 64px;
  width: 64px;
  height: 64px;
}

.gakuzo-3m-gas-mask .gas-process-card p {
  width: 226px;
  color: #1f3352;
  font-size: 12px;
  font-weight: 400;
  line-height: 16px;
}

.gakuzo-3m-gas-mask .gas-caution {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 32px 32px 0;
}

.gakuzo-3m-gas-mask .gas-caution h3 {
  position: relative;
  min-height: 17.05974px;
  padding-top: 3px;
  padding-left: 26px;
  color: #0a2b57;
  font-size: 16px;
  font-weight: 700;
  line-height: 32px;
}

.gakuzo-3m-gas-mask .gas-caution h3 img {
  position: absolute;
  top: -1px;
  left: -1px;
}

.gakuzo-3m-gas-mask .gas-caution p {
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
}

/* 強調文言の各行に12pxの帯を描画し、親幅・改行・文字メトリクスに追従させる。 */
.gakuzo-3m-gas-mask .gas-caution strong {
  font-weight: 700;
  background: linear-gradient(to bottom, transparent 6px, #f6e7a8 6px, #f6e7a8 18px, transparent 18px);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

/* Section02: 934:40。 */
.gakuzo-3m-gas-mask .gas-types {
  position: relative;
  isolation: isolate;
  margin-top: 40px !important;
  padding: 40px 32px;
}

.gakuzo-3m-gas-mask .gas-types-background {
  position: absolute;
  z-index: -1;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.gakuzo-3m-gas-mask .gas-types-background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.gakuzo-3m-gas-mask .gas-types-background::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.18) 0%, rgba(255, 255, 255, 0.58) 22%, rgba(255, 255, 255, 0.96) 46%, rgba(255, 255, 255, 0.91) 62%, rgba(255, 255, 255, 0.7) 82%, rgba(255, 255, 255, 0.35) 100%);
}

.gakuzo-3m-gas-mask .gas-facepiece-types {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.gakuzo-3m-gas-mask :is(.gas-facepiece-type, .gas-cartridge-type, .gas-filter-detail) {
  border: 1px solid #d1e5f5;
  border-radius: 4px;
  background: #fff;
}

.gakuzo-3m-gas-mask .gas-facepiece-type {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 144px;
  padding: 16px;
}

.gakuzo-3m-gas-mask .gas-facepiece-type > img {
  flex: 0 0 112px;
  width: 112px;
  height: 112px;
  border-radius: 4px;
  object-fit: contain;
}

.gakuzo-3m-gas-mask .gas-type-copy {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.gakuzo-3m-gas-mask .gas-type-copy h4 {
  color: #0a2b57;
  font-size: 16px;
  font-weight: 700;
  line-height: 24px;
}

.gakuzo-3m-gas-mask .gas-type-copy p {
  color: #1f304d;
  font-size: 12px;
  font-weight: 400;
  line-height: 16px;
}

.gakuzo-3m-gas-mask .gas-type-note {
  margin-top: 16px;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
}

.gakuzo-3m-gas-mask .gas-type-note strong {
  font-weight: 700;
}

.gakuzo-3m-gas-mask .gas-cartridge-types {
  display: grid;
  /* 各カードの実測X: 0 / 225 / 451 / 676。端数差もFigmaを維持する。 */
  grid-template-columns: 225px 226px 225px 209.5px;
  width: 885.5px;
  margin-top: 24px;
}

.gakuzo-3m-gas-mask .gas-cartridge-type {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 209.5px;
  padding: 16px;
}

.gakuzo-3m-gas-mask :is(.gas-cartridge-type, .gas-filter-detail) > img {
  flex: 0 0 82px;
  width: 82px;
  height: 82px;
  border-radius: 4px;
  object-fit: contain;
}

.gakuzo-3m-gas-mask .gas-cartridge-type h4 {
  text-align: center;
}

.gakuzo-3m-gas-mask .gas-filter-detail {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
  padding: 17px;
}

.gakuzo-3m-gas-mask .gas-filter-detail p {
  width: 752px;
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
}

.gakuzo-3m-gas-mask .gas-filter-matrix {
  width: 100%;
  height: 184px;
  margin-top: 8px;
  overflow: hidden;
  border: 1px solid #d1e5f5;
  border-radius: 4px;
  background: #fff;
  color: #0a2b57;
}

.gakuzo-3m-gas-mask .gas-filter-matrix table {
  width: calc(100% + 2px);
  margin: -1px 0 0 -1px;
  border: 0;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
}

.gakuzo-3m-gas-mask .gas-matrix-particle-column {
  width: 320px;
}

.gakuzo-3m-gas-mask .gas-matrix-efficiency-column {
  width: 246px;
}

.gakuzo-3m-gas-mask .gas-filter-matrix :is(th, td) {
  padding: 0;
  border: 0;
  vertical-align: middle;
  text-align: center;
}

.gakuzo-3m-gas-mask .gas-filter-matrix :is(th, td):not(:last-child) {
  box-shadow: inset -1px 0 #d1e5f5;
}

.gakuzo-3m-gas-mask .gas-filter-matrix th {
  height: 64px;
  background: #e7f4fd;
}

.gakuzo-3m-gas-mask :is(.gas-matrix-particle-heading, .gas-matrix-efficiency-heading) {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  height: 64px;
  overflow: hidden;
}

.gakuzo-3m-gas-mask .gas-filter-matrix span {
  display: block;
  text-box-trim: trim-both;
  text-box-edge: cap alphabetic;
  line-height: normal; /* 分類表はFigmaのAUTO行間を維持。 */
}

.gakuzo-3m-gas-mask .gas-matrix-letter {
  font-size: 32px;
  font-weight: 700;
}

.gakuzo-3m-gas-mask .gas-matrix-description {
  font-size: 12px;
  font-weight: 400;
}

.gakuzo-3m-gas-mask .gas-matrix-particle-heading .gas-matrix-description {
  width: 240px;
  text-align: left;
}

.gakuzo-3m-gas-mask .gas-matrix-efficiency-heading {
  gap: 12px;
}

.gakuzo-3m-gas-mask .gas-matrix-class {
  font-size: 24px;
  font-weight: 700;
}

.gakuzo-3m-gas-mask .gas-filter-matrix td {
  height: 40px;
  border-top: 1px solid #d1e5f5;
}

.gakuzo-3m-gas-mask .gas-filter-matrix td p {
  font-size: 16px;
  font-weight: 700;
  line-height: normal;
}

.gakuzo-3m-gas-mask .gas-filter-matrix td:last-child p {
  font-size: 12px;
  font-weight: 400;
}

/* Section03: 934:41。Section02との間隔は0px。 */
.gakuzo-3m-gas-mask .gas-selection {
  position: relative;
  isolation: isolate;
  padding: 40px 32px;
}

.gakuzo-3m-gas-mask .gas-selection-background {
  position: absolute;
  z-index: -1;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.gakuzo-3m-gas-mask .gas-selection-background img {
  position: absolute;
  top: -6.140763481217269px;
  left: -790.6772311101979px;
  width: 1833.6771967108214px;
  height: auto;
}

.gakuzo-3m-gas-mask .gas-selection-background::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.18) 0%, rgba(255, 255, 255, 0.58) 22%, rgba(255, 255, 255, 0.96) 46%, rgba(255, 255, 255, 0.91) 62%, rgba(255, 255, 255, 0.7) 82%, rgba(255, 255, 255, 0.35) 100%);
}

.gakuzo-3m-gas-mask .gas-selection-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  width: 100%;
  margin-top: 32px;
  overflow: clip;
  list-style: none;
}

.gakuzo-3m-gas-mask .gas-step {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  margin: 0;
  padding: 16px;
  border: 1px solid #d1e5f5;
  border-radius: 4px;
  background: #fff;
  list-style: none;
}

.gakuzo-3m-gas-mask .gas-step-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 48px;
  overflow: clip;
}

.gakuzo-3m-gas-mask .gas-step-badge {
  position: relative;
  display: grid;
  flex: 0 0 48px;
  place-items: center;
  width: 48px;
  height: 48px;
}

.gakuzo-3m-gas-mask .gas-step-badge > img {
  position: absolute;
  inset: 0;
}

.gakuzo-3m-gas-mask .gas-step-number {
  position: relative;
  color: #fff;
  font-size: 8px;
  font-weight: 700;
  line-height: 12px;
  text-align: center;
  text-box-trim: trim-both;
  text-box-edge: cap alphabetic;
}

.gakuzo-3m-gas-mask .gas-step-label {
  font-size: 8px;
  line-height: 12px;
}

.gakuzo-3m-gas-mask .gas-step-digit {
  font-size: 16px;
  line-height: 16px;
}

.gakuzo-3m-gas-mask .gas-step-heading h3 {
  flex: 1;
  min-width: 0;
  color: #0a2b57;
  font-size: 16px;
  font-weight: 700;
  line-height: 24px;
}

.gakuzo-3m-gas-mask .gas-step-photos {
  display: block;
}

.gakuzo-3m-gas-mask .gas-step-photo-responsive {
  display: none;
}

.gakuzo-3m-gas-mask .gas-step-photo {
  width: 175.5px;
  height: 112px;
  border-radius: 4px;
  object-fit: cover;
}

.gakuzo-3m-gas-mask .gas-step > p {
  font-size: 12px;
  font-weight: 400;
  line-height: 16px;
}

.gakuzo-3m-gas-mask .gas-selection .gas-replacement {
  margin: 32px 0 0;
}

.gakuzo-3m-gas-mask .gas-replacement-text {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

/* Section04: 934:42。PC正本、先頭のdetailsのみ初期OPEN。 */
.gakuzo-3m-gas-mask .gas-lineup {
  margin-top: 40px !important;
  padding: 0 32px;
}

.gakuzo-3m-gas-mask .gas-lineup-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.gakuzo-3m-gas-mask .gas-series {
  width: 100%;
  margin: 0;
  border: 0;
  background: #fff;
}

.gakuzo-3m-gas-mask .gas-series > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 48px;
  padding: 0 16px;
  background: #e8f6ff;
  color: #046cc0;
  font-size: 24px;
  font-weight: 700;
  line-height: 32px;
  list-style: none;
  cursor: pointer;
}

.gakuzo-3m-gas-mask .gas-series > summary::-webkit-details-marker {
  display: none;
}

.gakuzo-3m-gas-mask .gas-series > summary > span,
.gakuzo-3m-gas-mask .gas-series > summary::after {
  text-box-trim: trim-both;
  text-box-edge: cap alphabetic;
}

.gakuzo-3m-gas-mask .gas-series > summary::after {
  width: 14px;
  content: "+";
  font-weight: 400;
  text-align: center;
}

.gakuzo-3m-gas-mask .gas-series[open] > summary::after {
  content: "−";
}

.gakuzo-3m-gas-mask .gas-series-panel {
  padding: 16px 0 0;
}

.gakuzo-3m-gas-mask .gas-series-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  padding: 16px 32px;
  border: 1px solid #d1e5f5;
  border-radius: 4px;
  color: #1f3852;
}

.gakuzo-3m-gas-mask .gas-face-row {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  width: 100%;
}

/* FIXの本文562pxを維持。親820pxに対する16pxのはみ出しも現行Figmaどおり。 */
.gakuzo-3m-gas-mask .gas-face-copy {
  display: flex;
  flex: 0 0 562px;
  flex-direction: column;
  gap: 16px;
  width: 562px;
  padding-top: 16px;
}

.gakuzo-3m-gas-mask :is(.gas-face-image, .gas-product-image) {
  position: relative;
  flex-shrink: 0;
  overflow: hidden;
}

.gakuzo-3m-gas-mask .gas-face-image {
  width: 242px;
  height: 242px;
}

.gakuzo-3m-gas-mask .gas-product-image {
  width: 112px;
  height: 112px;
}

.gakuzo-3m-gas-mask :is(.gas-face-image, .gas-product-image) img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.gakuzo-3m-gas-mask .gas-image-crop img {
  position: absolute;
  height: auto;
  object-fit: initial;
}

.gakuzo-3m-gas-mask :is(.gas-product-tags, .gas-face-models ul, .gas-product-row) {
  margin: 0;
  padding: 0;
}

.gakuzo-3m-gas-mask .gas-product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  min-height: 16px;
  list-style: none;
}

.gakuzo-3m-gas-mask .gas-product-tags li {
  margin: 0;
  padding: 8px 4px;
  border-radius: 4px;
  background: #e8f6ff;
  list-style: none;
}

.gakuzo-3m-gas-mask .gas-product-tags p {
  color: #046cc0;
  font-size: 10px;
  font-weight: 700;
  line-height: 12px;
  white-space: nowrap;
}

.gakuzo-3m-gas-mask .gas-face-description {
  font-size: 14px;
  font-weight: 400;
  line-height: 16px;
}

.gakuzo-3m-gas-mask .gas-face-models {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 16px;
}

.gakuzo-3m-gas-mask :is(.gas-face-models, .gas-compatible) > h4 {
  color: #046cc0;
  font-size: 14px;
  font-weight: 700;
  line-height: 16px;
}

.gakuzo-3m-gas-mask .gas-face-models ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-left: 21px;
  list-style: disc;
}

.gakuzo-3m-gas-mask .gas-face-models li {
  margin: 0;
  padding: 0;
  font-size: 14px;
  font-weight: 700;
  line-height: 16px;
  text-box-trim: trim-both;
  text-box-edge: cap alphabetic;
}

.gakuzo-3m-gas-mask .gas-compatible {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.gakuzo-3m-gas-mask .gas-product-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  column-gap: 17px; /* FigmaのGap8px＋区切り線1px＋Gap8px。 */
  width: 100%;
  list-style: none;
}

.gakuzo-3m-gas-mask .gas-product {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  height: 178px;
  margin: 0;
  padding: 8px;
  border-radius: 4px;
  background: #fff;
  list-style: none;
}

.gakuzo-3m-gas-mask .gas-product:not(:nth-child(5))::after {
  position: absolute;
  top: 9px;
  right: -9px;
  width: 1px;
  height: 160px;
  background: #cfe6f7;
  content: "";
}

.gakuzo-3m-gas-mask .gas-product-model {
  width: 140px;
  font-size: 12px;
  font-weight: 700;
  line-height: 16px;
  text-align: center;
}

.gakuzo-3m-gas-mask .gas-product-use {
  width: 140px;
  height: 25px;
}

.gakuzo-3m-gas-mask .gas-product-use p {
  font-size: 10px;
  font-weight: 400;
  line-height: 16px;
  text-align: center;
}

/* 950px未満でもPCの列数・文字・背景を保ち、幅に関わる寸法だけ追従させる。 */

@container gakuzo-gas-mask (width < 950px) {
  .gakuzo-3m-gas-mask .gas-process-card :is(h4, p) {
    width: 100%;
  }

  .gakuzo-3m-gas-mask .gas-facepiece-type {
    min-width: 0;
    height: auto;
    min-height: 144px;
  }

  .gakuzo-3m-gas-mask .gas-cartridge-types {
    width: 100%;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .gakuzo-3m-gas-mask .gas-cartridge-type {
    width: auto;
  }

  .gakuzo-3m-gas-mask .gas-filter-detail p {
    flex: 1 1 auto;
    width: auto;
    min-width: 0;
  }

  .gakuzo-3m-gas-mask .gas-matrix-particle-column {
    width: 36%;
  }

  .gakuzo-3m-gas-mask .gas-matrix-efficiency-column {
    width: 28%;
  }

  .gakuzo-3m-gas-mask .gas-step-heading {
    height: auto;
    min-height: 48px;
    overflow: visible;
  }

  .gakuzo-3m-gas-mask .gas-step-photo {
    width: 100%;
    height: auto;
    aspect-ratio: 175.5 / 112;
  }

  .gakuzo-3m-gas-mask .gas-face-copy {
    flex: 1 1 0;
    width: auto;
    min-width: 0;
  }

  .gakuzo-3m-gas-mask .gas-product {
    height: auto;
    min-height: 178px;
  }

  .gakuzo-3m-gas-mask .gas-product-model,
  .gakuzo-3m-gas-mask .gas-product-use {
    max-width: 100%;
  }
}

/* 列数・文字・背景のTablet切り替えは、親幅900px未満で行う。 */
@container gakuzo-gas-mask (width < 900px) {
  .gakuzo-3m-gas-mask .gas-process-card {
    padding-right: 16px;
    padding-left: 16px;
  }

  .gakuzo-3m-gas-mask .gas-cartridge-types {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gakuzo-3m-gas-mask .gas-filter-matrix {
    height: auto;
  }

  .gakuzo-3m-gas-mask .gas-matrix-particle-heading {
    gap: 8px;
    padding: 8px;
  }

  .gakuzo-3m-gas-mask .gas-matrix-particle-heading .gas-matrix-description {
    flex: 1 1 auto;
    width: auto;
    min-width: 0;
  }

  .gakuzo-3m-gas-mask .gas-selection-background {
    background: #f5f8fb;
  }

  .gakuzo-3m-gas-mask .gas-selection-background img {
    inset: 0;
    width: 100%;
    height: 629px;
    object-fit: cover;
    object-position: right center;
    mask-image: linear-gradient(to bottom, #000 70%, transparent 100%);
  }

  .gakuzo-3m-gas-mask .gas-selection-background::after {
    background: rgba(255, 255, 255, 0.88);
  }

  .gakuzo-3m-gas-mask .gas-selection-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gakuzo-3m-gas-mask .gas-step-photo-pc {
    display: none;
  }

  .gakuzo-3m-gas-mask .gas-step-photo-responsive {
    display: block;
  }

  .gakuzo-3m-gas-mask .gas-series > summary {
    min-height: 48px;
    height: auto;
    gap: 16px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .gakuzo-3m-gas-mask .gas-series > summary::after {
    flex: 0 0 14px;
  }

  .gakuzo-3m-gas-mask .gas-face-description {
    line-height: 20px;
  }

  .gakuzo-3m-gas-mask :is(.gas-process-card p, .gas-type-copy p, .gas-step > p) {
    font-size: 14px;
    line-height: 20px;
  }

  .gakuzo-3m-gas-mask .gas-product-model {
    font-size: 14px;
    line-height: 20px;
  }

  .gakuzo-3m-gas-mask .gas-product-use p {
    font-size: 12px;
    line-height: 16px;
  }

  .gakuzo-3m-gas-mask .gas-product-tags p {
    font-size: 12px;
    line-height: 16px;
  }

  .gakuzo-3m-gas-mask .gas-product-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .gakuzo-3m-gas-mask .gas-product:not(:nth-child(5))::after {
    content: none;
  }

  .gakuzo-3m-gas-mask .gas-product-model,
  .gakuzo-3m-gas-mask .gas-product-use {
    width: 100%;
  }

  .gakuzo-3m-gas-mask .gas-product-use {
    height: auto;
    min-height: 25px;
  }
}

@container gakuzo-gas-mask (max-width: 768px) {
  .gakuzo-3m-gas-mask .gas-about-background img {
    top: 0;
    right: 0;
    left: auto;
    width: 1140px;
    height: auto;
    mask-image: linear-gradient(to bottom, #000 70%, transparent 100%);
  }

  .gakuzo-3m-gas-mask .gas-about-background::after {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.85) 45%, rgba(255, 255, 255, 0.5) 100%);
  }
}

@container gakuzo-gas-mask (max-width: 640px) {
  .gakuzo-3m-gas-mask .gas-about-visual {
    padding: 32px 16px 0;
  }

  .gakuzo-3m-gas-mask .gas-process {
    grid-template-columns: minmax(0, 1fr);
  }

  .gakuzo-3m-gas-mask .gas-process-card {
    padding: 16px 24px;
  }

  .gakuzo-3m-gas-mask .gas-process-card:not(:last-child)::after {
    top: auto;
    right: calc(50% - 7px);
    bottom: -23px;
    transform: rotate(90deg);
  }

  .gakuzo-3m-gas-mask .gas-caution {
    margin-right: 16px;
    margin-left: 16px;
  }

  .gakuzo-3m-gas-mask .gas-section-heading {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 16px;
  }

  .gakuzo-3m-gas-mask .gas-section-number {
    grid-column: 1;
    grid-row: 1;
  }

  .gakuzo-3m-gas-mask .gas-heading-copy {
    display: contents;
  }

  .gakuzo-3m-gas-mask .gas-heading-copy h2 {
    grid-column: 2;
    grid-row: 1;
    align-self: center;
    font-size: 20px;
    line-height: 32px;
    letter-spacing: -0.6px;
  }

  .gakuzo-3m-gas-mask .gas-heading-copy > p {
    grid-column: 1 / -1;
  }

  .gakuzo-3m-gas-mask :is(.gas-types, .gas-selection) {
    padding: 32px 16px;
  }

  .gakuzo-3m-gas-mask .gas-lineup {
    padding: 0 16px;
  }

  .gakuzo-3m-gas-mask .gas-facepiece-types,
  .gakuzo-3m-gas-mask .gas-selection-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .gakuzo-3m-gas-mask .gas-filter-detail {
    gap: 12px;
    padding: 16px;
  }

  .gakuzo-3m-gas-mask :is(.gas-matrix-particle-heading, .gas-matrix-efficiency-heading) {
    flex-direction: column;
    gap: 8px;
    height: auto;
    min-height: 120px;
    padding: 8px 4px;
    overflow: visible;
  }

  .gakuzo-3m-gas-mask .gas-matrix-particle-heading .gas-matrix-description {
    flex: 0 1 auto;
    text-align: center;
  }

  .gakuzo-3m-gas-mask .gas-filter-matrix th {
    height: 120px;
  }

  .gakuzo-3m-gas-mask .gas-filter-matrix td {
    height: 48px;
  }

  .gakuzo-3m-gas-mask .gas-matrix-efficiency-heading .gas-matrix-description {
    white-space: normal;
  }

  .gakuzo-3m-gas-mask .gas-series > summary {
    font-size: 20px;
    line-height: 28px;
  }

  .gakuzo-3m-gas-mask .gas-series-card {
    padding: 16px;
  }

  .gakuzo-3m-gas-mask .gas-face-row {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .gakuzo-3m-gas-mask .gas-face-copy {
    flex: none;
    width: 100%;
    padding-top: 0;
  }

  .gakuzo-3m-gas-mask .gas-product-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 8px;
  }

  .gakuzo-3m-gas-mask .gas-product {
    padding: 8px 0;
  }

  .gakuzo-3m-gas-mask .gas-about-background img {
    width: 900px;
  }
}

@container gakuzo-gas-mask (max-width: 360px) {
  .gakuzo-3m-gas-mask .gas-heading-copy h2 {
    font-size: 18px;
    letter-spacing: -0.54px;
  }
}

/* Section04 image CROP: FigmaのimageTransformから算出。 */

.gakuzo-3m-gas-mask .gas-image-783-287 img {
  width: 225.04953600871266px;
  left: 8.642865885909183px;
  top: 38.769328637866465px;
}

.gakuzo-3m-gas-mask .gas-image-888-40 img {
  width: 97.11530955938483px;
  left: 7.426672069288626px;
  top: 16.108393694440586px;
}

.gakuzo-3m-gas-mask .gas-image-888-41 img {
  width: 94.00727224408165px;
  left: 8.372111964542507px;
  top: 14.596169257759337px;
}

.gakuzo-3m-gas-mask .gas-image-844-35 img {
  width: 226.60049507249275px;
  left: 7.918176111557853px;
  top: 21.51221357941116px;
}

.gakuzo-3m-gas-mask .gas-image-845-131 img {
  width: 240.03601362335058px;
  left: 1.3192056132958325px;
  top: 16.93825359252234px;
}

.gakuzo-3m-gas-mask .gas-image-894-39 img,
.gakuzo-3m-gas-mask .gas-image-896-40 img {
  width: 86.70670324835864px;
  left: 12.395579705042342px;
  top: 13.330580156158492px;
}

.gakuzo-3m-gas-mask .gas-image-888-51 img,
.gakuzo-3m-gas-mask .gas-image-896-64 img,
.gakuzo-3m-gas-mask .gas-image-897-54 img {
  width: 92.58909079154891px;
  left: 9.493379778785254px;
  top: 10.330583069615452px;
}

.gakuzo-3m-gas-mask .gas-image-847-37 img {
  width: 233.0869862148626px;
  left: 4.850493867674852px;
  top: 28.049806736530854px;
}

.gakuzo-3m-gas-mask .gas-image-848-38 img {
  width: 160.10138508415199px;
  left: 40.52900021175521px;
  top: 25.798013231891755px;
}