:root {
  --blue: #037cc2;
  --text: #222222;
  --muted: #5a5a5a;
  --line: #b2b2b2;
  --soft: #f7f7f7;
  --max: 1242px;
  --wide: 1512px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: #fff;
  font-family: Inter, "Noto Sans JP", "Helvetica Neue", Arial, "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
}

.sp-only {
  display: none;
}

.container {
  width: min(100% - 80px, var(--max));
  margin: 0 auto;
}

.wide-container {
  width: min(100%, var(--wide));
  margin: 0 auto;
}

.section {
  padding: 100px 0 0;
}

.section-title,
.section-heading h2 {
  margin: 0;
  color: var(--text);
  font-size: 36px;
  line-height: 60px;
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.371px;
}

.section-heading {
  display: grid;
  gap: 21px;
  max-width: 1025px;
  margin: 0 auto 60px;
  text-align: center;
}

.section-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 28.8px;
  font-weight: 500;
  letter-spacing: -0.313px;
}

.section-heading.compact {
  gap: 20px;
}

.section-heading .en {
  color: var(--muted);
  font-size: 24px;
  line-height: 24px;
  font-weight: 700;
}

.intro-heading {
  grid-template-columns: 1fr;
  align-items: center;
  max-width: 1025px;
  text-align: center;
}

.intro-copy {
  display: grid;
  gap: 21px;
}

.intro-copy h2,
.intro-copy p {
  text-align: center;
}

.intro-image {
  width: 700px;
  max-width: 100%;
  height: auto;
  border-radius: 0;
  object-fit: contain;
  margin: 19px auto 0;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 20px;
  border-radius: 100px;
  color: #fff;
  font-size: 16px;
  line-height: 25.6px;
  white-space: nowrap;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.pill-btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.pill-btn img {
  width: 24px;
  height: 24px;
}

.pill-btn-outline {
  border: 1px solid #111;
  background: #fff;
  color: #111;
}

.pill-btn-outline img {
  filter: invert(1);
}

.pill-btn-blue {
  border: 1px solid var(--blue);
  background: var(--blue);
}

.hero {
  position: relative;
  width: 100%;
  min-height: 820px;
  color: var(--text);
  background: #fff;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  left: 0;
  right: 0;
  top: 100px;
  bottom: 0;
  background: url("images/hero-classroom.png") center center / cover no-repeat;
}

.site-header {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100px;
  margin: 0 auto;
  padding: 0 40px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid #e5e5e5;
}

.site-logo {
  width: 270px;
  height: 48px;
}

.site-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  margin: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 32px;
}

.hamburger {
  display: none;
}

.sp-menu {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 30px;
  width: 100%;
  min-height: 720px;
  margin: 0 auto;
  padding: 106px min(7vw, 100px) 60px;
  background: transparent;
  text-align: left;
}

.hero h1 {
  margin: 0;
  color: #050505;
  font-size: 56px;
  line-height: 50px;
  font-weight: 700;
  letter-spacing: 0;
}

.hero-lead {
  margin: 0;
  color: #6c91ad;
  font-size: 30px;
  line-height: 54px;
  font-weight: 400;
  letter-spacing: 3px;
}

.hero-copy {
  margin: 0;
  color: #111;
  font-size: 20px;
  line-height: 32.4px;
  letter-spacing: -0.44px;
}

.intro {
  padding-top: 100px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 54px;
}

.feature-card {
  display: flex;
  flex-direction: column;
  gap: 27px;
}

.feature-text {
  display: grid;
  gap: 20px;
}

.feature-card h3,
.spec-grid h3,
.product-cards h3 {
  margin: 0;
  color: #303030;
  font-size: 24px;
  line-height: 30px;
  font-weight: 700;
  letter-spacing: 0.371px;
}

.feature-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.feature-title img {
  width: 2em;
  height: 2em;
  flex: 0 0 auto;
  object-fit: contain;
}

.feature-card p,
.spec-grid p,
.main-feature p,
.product-cards p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 28.8px;
  font-weight: 500;
  letter-spacing: -0.313px;
}

.feature-image {
  width: 100%;
  aspect-ratio: 594 / 392;
  object-fit: cover;
}

.benefits,
.product-feature,
.room-section,
.system-section,
.faq-section,
.cta-section {
  display: grid;
  gap: 60px;
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
  padding: 30px 40px 0;
}

.benefit-grid article {
  display: grid;
  gap: 26px;
  text-align: center;
}

.benefit-grid img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.benefit-grid h3 {
  margin: 0;
  font-size: 20px;
  line-height: 30px;
  font-weight: 700;
  letter-spacing: -0.45px;
}

.model-section {
  overflow: hidden;
}

.model-container {
  display: grid;
  gap: 60px;
  width: min(100% - 160px, 1242px);
  margin: 0 auto;
}

.model-heading {
  margin-bottom: 0;
}

.model-products {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 500px));
  justify-content: center;
  gap: 25px;
}

.model-products figure {
  display: grid;
  gap: 12px;
  margin: 0;
  text-align: center;
}

.model-products img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.model-products figcaption {
  color: var(--muted);
  font-size: 18px;
  line-height: 28.8px;
  font-weight: 700;
  letter-spacing: -0.313px;
}

.model-logos {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 36px;
}

.model-logos img:first-child {
  width: 176px;
}

.model-logos img:last-child {
  width: 186px;
}

.model-table-scroll {
  width: 100%;
}

.model-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 15px;
  line-height: 24px;
  letter-spacing: -0.234px;
}

.model-table th,
.model-table td {
  border: 1px solid var(--line);
  padding: 32px 20px;
  text-align: left;
  vertical-align: middle;
}

.model-table thead th {
  color: #fff;
  background: #000;
  font-weight: 600;
}

.model-table thead th:first-child,
.model-table tbody th {
  width: 206px;
}

.model-table thead th:not(:first-child) {
  font-size: 18px;
  line-height: 28.8px;
}

.model-table thead span,
.model-table thead small {
  display: block;
}

.model-table thead small {
  margin-top: 10px;
  font-size: 14px;
  line-height: 22.4px;
  font-weight: 400;
}

.model-table tbody th {
  background: #f8f9fa;
  font-weight: 600;
}

.model-table td {
  font-weight: 400;
}

.model-table td p {
  margin: 0;
}

.model-table td p + p {
  margin-top: 10px;
  color: #666;
  font-size: 13px;
  line-height: 20.8px;
  letter-spacing: -0.076px;
}

.range-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.range-line span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  min-height: 34px;
  border-radius: 6px;
  background: #e9e9e9;
  font-size: 14px;
  line-height: 22.4px;
  font-weight: 500;
}

.range-line strong {
  font-size: 15px;
  line-height: 24px;
  font-weight: 600;
  white-space: nowrap;
}

.range-line + p {
  color: #666;
  font-size: 13px;
  line-height: 20.8px;
  letter-spacing: -0.076px;
}

.case-carousel {
  position: relative;
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
  padding: 30px 0 10px;
}

.case-track {
  display: flex;
  gap: 30px;
  overflow: hidden;
  min-height: 356px;
}

.case-slide {
  flex: 0 0 700px;
  min-width: 0;
}

.case-track.slick-initialized {
  display: block;
  gap: 0;
  overflow: visible;
}

.case-card {
  display: grid;
  gap: 26px;
  color: var(--text);
  text-align: center;
  min-width: 0;
}

.case-track .case-slide {
  padding: 0 15px;
}

.case-track .slick-slide {
  padding: 0 15px;
}

.case-track .slick-list {
  overflow: visible;
}

.case-track .slick-slide {
  height: auto;
}

.case-card img {
  display: block;
  width: 700px;
  max-width: 100%;
  aspect-ratio: 4 / 3;
  height: auto;
  object-fit: cover;
  background: #d9d9d9;
}

.case-card h3 {
  margin: 0;
  font-size: 20px;
  line-height: 30px;
  font-weight: 700;
  letter-spacing: -0.45px;
}

.case-track .slick-arrow {
  position: absolute;
  top: 262.5px;
  z-index: 3;
  width: 60px;
  height: 60px;
  border: 0;
  border-radius: 50%;
  color: transparent;
  background: var(--blue);
  cursor: pointer;
  transform: translateY(-50%);
  font-size: 0;
}

.case-track .slick-arrow::before {
  content: "";
  position: absolute;
  inset: 0;
  width: 16px;
  height: 16px;
  margin: auto;
  border-top: 4px solid #fff;
  border-right: 4px solid #fff;
}

.case-track .slick-prev {
  left: 36px;
}

.case-track .slick-prev::before {
  transform: rotate(-135deg);
}

.case-track .slick-next {
  right: 36px;
}

.case-track .slick-next::before {
  transform: rotate(45deg);
}

.case-track .slick-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.case-track .slick-dots button {
  width: 12px;
  height: 12px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: transparent;
  background: #cfcfcf;
}

.case-track .slick-dots .slick-active button {
  background: #666;
}

.main-feature {
  display: grid;
  justify-items: center;
  text-align: center;
}

.youtube-embed {
  position: relative;
  display: block;
  width: 1000px;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  padding: 0;
  margin-bottom: 20px;
  border: 0;
  background: #000;
  overflow: hidden;
  cursor: pointer;
}

iframe.youtube-embed {
  cursor: default;
}

.youtube-embed-truvoicelift {
  margin-top: 40px;
}

.youtube-embed.is-playing {
  cursor: default;
}

.youtube-embed img,
.youtube-embed iframe {
  display: block;
  width: 100%;
  height: 100%;
}

.youtube-embed img {
  object-fit: cover;
}

.youtube-embed iframe {
  border: 0;
}

.youtube-play {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 74px;
  height: 74px;
  border-radius: 50%;
  background: rgba(3, 124, 194, 0.9);
  transform: translate(-50%, -50%);
  transition: transform 0.2s ease, background 0.2s ease;
}

.youtube-play::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 22px;
  width: 0;
  height: 0;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
  border-left: 22px solid #fff;
}

.youtube-embed:hover .youtube-play {
  background: var(--blue);
  transform: translate(-50%, -50%) scale(1.06);
}

.main-feature h3 {
  margin: 0;
  color: #303030;
  font-size: 26px;
  line-height: 60px;
  font-weight: 700;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  padding: 40px 40px 0;
}

.spec-grid article {
  display: grid;
  gap: 20px;
}

.spec-grid img {
  width: 100%;
  aspect-ratio: 696 / 392;
  object-fit: cover;
}

.room-section {
  background: var(--soft);
  padding: 60px 0;
  margin-top: 100px;
}

.room-heading {
  margin-bottom: 60px;
}

.room-layout {
  display: grid;
  grid-template-columns: minmax(0, 860px) minmax(280px, 400px);
  justify-content: center;
  align-items: flex-start;
  gap: 60px;
  padding: 0 65px;
}

.room-group {
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: stretch;
}

.room-group-pair {
  width: 100%;
}

.room-group-large {
  width: 100%;
  max-width: 400px;
}

.room-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 60px;
}

.room-card {
  display: grid;
  gap: 20px;
  margin: 0;
  text-align: center;
}

.room-card-3 {
  background-color: #bed3de;
}

.room-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.room-group-large .room-card img {
  object-position: center;
}

.room-card h3 {
  margin: 0;
  color: #303030;
  font-size: 26px;
  line-height: 30px;
  font-weight: 700;
  letter-spacing: 0.371px;
}

.outline-arrow-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 60px;
  padding: 12px 32px;
  border: 1px solid var(--blue);
  color: var(--blue);
  background: #fff;
  font-size: 16px;
  line-height: 30px;
  font-weight: 700;
  letter-spacing: 0.371px;
  text-align: center;
  transition: background 0.2s ease, color 0.2s ease;
}

.outline-arrow-btn:hover {
  color: #fff;
  background: var(--blue);
}

.chevron {
  width: 8px;
  height: 8px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.system-section .container {
  display: grid;
  gap: 60px;
  width: min(100% - 160px, 1353px);
}

.plan-card {
  scroll-margin-top: 32px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 50px;
  padding: 50px;
  border: 1px solid #757575;
  border-radius: 10px;
}

.plan-copy {
  display: grid;
  gap: 15px;
  width: 100%;
}

.plan-copy h3 {
  margin: 0;
  color: #303030;
  font-size: 26px;
  line-height: 60px;
  font-weight: 700;
  letter-spacing: 0.371px;
}

.plan-copy ul {
  margin: 0;
  padding-left: 24px;
  color: var(--muted);
  font-size: 16px;
  line-height: 28.8px;
  font-weight: 500;
  letter-spacing: -0.313px;
}

.plan-card img {
  width: 100%;
  object-fit: cover;
}

.equipment-container {
  display: grid;
  gap: 60px;
  width: min(100% - 160px, 1253px);
}

.equipment-container .section-heading {
  margin-bottom: 0;
}

.equipment-container .section-heading p {
  color: #303030;
  font-size: 26px;
  line-height: 60px;
  font-weight: 700;
  letter-spacing: 0.371px;
}

.equipment-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 245px;
  gap: 36px;
  align-items: start;
}

.equipment-diagram {
  position: relative;
  display: grid;
  grid-template-columns: 180px 247px 260px;
  gap: 54px;
  align-items: center;
  min-height: 766px;
  background:
    linear-gradient(#16c15a, #16c15a) 176px 50% / 90px 2px no-repeat,
    linear-gradient(#16c15a, #16c15a) 480px 50% / 112px 2px no-repeat,
    #fff;
}

.equipment-node,
.speaker-node {
  display: grid;
  gap: 3px;
  color: #000;
  background: #fff;
  font-size: 16px;
  line-height: 30px;
  font-weight: 700;
  letter-spacing: 0.371px;
}

.equipment-label {
  font-weight: 700;
}

.equipment-node a,
.speaker-node a,
.device-card a,
.equipment-option a {
  color: #000;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.mic-node img {
  width: 162px;
  height: 95px;
  object-fit: contain;
}

.equipment-stack {
  display: grid;
  gap: 32px;
}

.device-card {
  position: relative;
  display: grid;
  gap: 8px;
  align-items: end;
  min-height: 109px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #000;
  background: #fff;
  font-size: 16px;
  line-height: 23px;
  font-weight: 700;
  letter-spacing: 0.371px;
}

.device-card:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -32px;
  width: 2px;
  height: 32px;
  transform: translateX(-50%);
  pointer-events: none;
}

.device-card:nth-child(1)::after,
.device-card:nth-child(2)::after {
  background: #16c15a;
}

.device-card:nth-child(3)::after {
  background: #ff8a2a;
}

.device-card a {
  display: block;
  font-size: 14px;
  line-height: 1.7;
}

.device-card img {
  justify-self: center;
  max-width: 192px;
  max-height: 102px;
  object-fit: contain;
}

.controller-card {
  grid-template-columns: 1fr 85px;
  align-items: end;
}

.controller-card img {
  width: 85px;
  max-height: 124px;
}

.speaker-images {
  display: grid;
  gap: 14px;
  width: 118px;
}

.speaker-images img {
  width: 118px;
  height: 69px;
  object-fit: contain;
}

.speaker-node {
  position: relative;
  padding-left: 18px;
}

.line-key {
  position: absolute;
  right: 120px;
  bottom: 28px;
  display: grid;
  gap: 15px;
  color: #000;
  font-size: 16px;
  line-height: 30px;
  font-weight: 700;
}

.line-key p {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.line-sample {
  display: inline-block;
  width: 77px;
  height: 2px;
}

.line-sample.cat {
  background: #16c15a;
}

.line-sample.analog {
  background: #000;
}

.line-sample.usb {
  background: #ff8a2a;
}

.equipment-option {
  display: grid;
  gap: 18px;
  align-items: start;
  padding: 20px;
  background: var(--soft);
}

.equipment-option h3 {
  margin: 0;
  color: #000;
  font-size: 16px;
  line-height: 30px;
  font-weight: 700;
}

.equipment-option p {
  margin: 0;
  color: #000;
  font-size: 14px;
  line-height: 24px;
  font-weight: 500;
  letter-spacing: 0.371px;
}

.option-item {
  display: grid;
  gap: 12px;
}

.option-item img {
  width: 200px;
  height: 117px;
  object-fit: contain;
}

.option-item a {
  font-size: 14px;
  line-height: 24px;
  font-weight: 500;
}

.faq-list {
  padding-top: 30px;
  display: grid;
  gap: 24px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.faq-question,
.faq-answer {
  display: grid;
  grid-template-columns: 26px 1fr 18px;
  gap: 25px;
  align-items: start;
  width: 100%;
  padding: 20px 40px;
}

.faq-question {
  align-items: center;
  border: 0;
  color: inherit;
  background: #fff;
  text-align: left;
  cursor: pointer;
}

.faq-question i {
  position: relative;
  display: block;
  width: 18px;
  height: 18px;
}

.faq-question i::before,
.faq-question i::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 2px;
  background: var(--blue);
  transform: translate(-50%, -50%);
  transition: transform 0.25s ease;
}

.faq-question i::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-question[aria-expanded="true"] i::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.faq-answer {
  grid-template-columns: 26px 1fr 18px;
  align-items: start;
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  overflow: hidden;
  border-top: 1px solid transparent;
  opacity: 0;
  transition: max-height 0.35s ease, padding 0.35s ease, opacity 0.25s ease;
}

.faq-item.is-open .faq-answer {
  padding-top: 20px;
  padding-bottom: 20px;
  border-top-color: var(--line);
  opacity: 1;
}

.faq-list span {
  color: var(--blue);
  font-size: 26px;
  line-height: 0.5;
  font-weight: 700;
  text-align: center;
}

.faq-answer > span {
  padding-top: 3px;
}

.faq-list p {
  margin: 0;
  font-size: 16px;
  line-height: 20px;
  font-weight: 500;
}

.faq-answer p + p {
  margin-top: 12px;
}

.showroom {
  padding: 60px 0;
  margin-top: 100px;
  background: var(--soft);
}

.showroom-card {
  display: grid;
  grid-template-columns: 392px 1fr;
  gap: 60px;
  align-items: center;
  width: min(100% - 154px, 1358px);
  margin: 0 auto;
  padding: 32px;
  background: #fff;
}

.showroom-card > img {
  width: 392px;
  height: 320px;
  object-fit: cover;
}

.showroom-card h3 {
  margin: 0 0 16px;
  font-size: 24px;
  line-height: 28.8px;
  text-align: left;
}

.showroom-card p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 28.8px;
  font-weight: 500;
  text-align: left;
}

.showroom-wide {
  width: 1358px;
  height: 400px;
  margin: 20px auto 0;
  object-fit: cover;
}
 .showroom-wide_pc {
    display: block;
  }
 .showroom-wide_sp {
    display: none;
  }
.cta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 663px));
  justify-content: space-between;
  gap: 50px;
  width: min(100% - 135px, 1377px);
}

.cta-grid article {
  display: grid;
  justify-items: center;
  gap: 30px;
  padding: 90px;
  border: 1px solid var(--line);
  text-align: center;
}

.cta-grid h2 {
  margin: 0;
  font-size: 36px;
  line-height: 60px;
}

.cta-grid h3 {
  margin: -20px 0 0;
  color: var(--muted);
  font-size: 24px;
  line-height: 24px;
}

.cta-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 28.8px;
}

.cta-grid .pill-btn {
  min-height: 70px;
  padding: 20px 60px;
  font-size: 18px;
  line-height: 28.8px;
}

.footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  width: 100%;
  margin: 100px 0 0;
  padding: 70px max(110px, calc((100% - var(--wide)) / 2 + 110px));
  color: #fff;
  background: #000;
}

.footer-logo {
  width: 330px;
}

.footer .company {
  margin: 10px 0;
  font-size: 20px;
  line-height: 30px;
  font-weight: 700;
}

.footer p {
  margin: 0;
  font-size: 16px;
  line-height: 30px;
}

.social__list {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.social__list a {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
}

.social__list img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.footer-mark {
  width: 179px;
  height: 58px;
  object-fit: contain;
}

@media screen and (max-width: 1200px) {
  .sp-only {
    display: block;
  }

  .container,
  .wide-container {
    width: 100%;
  }

  .section {
    padding: 60px 16px 0;
  }

  .section-title,
  .section-heading h2 {
    font-size: 26px;
    line-height: 40px;
  }

  .section-heading {
    gap: 21px;
    margin-bottom: 30px;
    width: 100%;
  }

  .section-heading p {
    font-size: 18px;
    line-height: 28.8px;
  }

  .section-heading .en {
    font-size: 16px;
    line-height: 24px;
    font-weight: 500;
  }

  .intro-heading {
    grid-template-columns: 1fr;
    gap: 21px;
    justify-items: center;
    text-align: center;
  }

  .intro-copy h2,
  .intro-copy p {
    text-align: center;
  }

  .intro-image {
    width: 100%;
    height: auto;
    aspect-ratio: auto;
    margin: 9px auto 0;
  }

  .hero {
    min-height: 650px;
  }

  .hero-bg {
    left: 0;
    right: 0;
    top: 70px;
    bottom: 0;
    width: 100%;
    height: auto;
    transform: none;
    background: url("images/hero-classroom-sp.png") center bottom / cover no-repeat;
  }

  .site-header {
    height: 70px;
    padding: 0 16px;
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
  }

  .site-logo {
    position: absolute;
    left: 24px;
    top: 18px;
    width: 145px;
    height: 34px;
    transform: none;
  }

  .site-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    margin: 0;
  }

  .header-actions {
    display: none;
  }

  .hamburger {
    position: absolute;
    right: 12px;
    top: 17px;
    z-index: 60;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 36px;
    height: 36px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
  }

  .hamburger.active {
    position: fixed;
    top: 16px;
    right: 14px;
    width: 36px;
    height: 36px;
    gap: 0;
  }

  .hamburger span {
    display: block;
    width: 23px;
    height: 2px;
    margin: 0 auto;
    background: #111;
    transition: transform 0.25s ease;
  }

  .hamburger.active span {
    background: #fff;
  }

  .hamburger.active span:first-child {
    position: absolute;
    left: 4px;
    top: 17px;
    width: 28px;
    transform: rotate(45deg);
  }

  .hamburger.active span:last-child {
    position: absolute;
    left: 4px;
    top: 17px;
    width: 28px;
    transform: rotate(-45deg);
  }

  .sp-menu {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 24px;
    padding: 110px 30px 30px;
    color: #fff;
    background: #000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
  }

  .sp-menu.active {
    opacity: 1;
    visibility: visible;
  }

  .sp-menu a {
    color: #fff;
    font-size: 16px;
    line-height: 25.6px;
    font-weight: 400;
    letter-spacing: -0.313px;
    text-align: center;
    white-space: nowrap;
  }

  .sp-menu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    padding: 10px 20px;
    border-radius: 100px;
  }

  .sp-menu-btn img {
    width: 24px;
    height: 24px;
  }

  .sp-menu-btn-outline {
    border: 1px solid #fff;
  }

  .sp-menu-btn-outline img {
    filter: none;
  }

  .sp-menu-btn-blue {
    border: 1px solid var(--blue);
    background: var(--blue);
  }

  .hero-content {
    align-items: flex-start;
    gap: 22px;
    min-height: 562px;
    height: auto;
    padding: 52px 24px 40px;
    background: transparent;
    text-align: left;
  }

  .hero h1 {
    font-size: 30px;
    line-height: 32px;
    font-weight: 700;
  }

  .hero-lead {
    color: #6c91ad;
    font-size: 18px;
    line-height: 27px;
    letter-spacing: 2px;
  }

  .hero-copy {
    width: 100%;
    color: #111;
    font-size: 16px;
    line-height: 32.4px;
  }

  .intro {
    padding-top: 60px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 54px;
  }

  .feature-card {
    gap: 20px;
  }

  .feature-image {
    order: -1;
  }

  .feature-card h3,
  .spec-grid h3,
  .product-cards h3 {
    font-size: 20px;
    line-height: 30px;
  }

  .feature-card:first-child h3 {
    font-size: 20px;
    line-height: 20px;
  }

  .benefits,
  .product-feature,
  .room-section,
  .system-section,
  .model-section,
  .faq-section,
  .cta-section {
    gap: 30px;
  }

  .benefit-grid,
  .spec-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 30px 0 0;
  }

  .benefit-grid article {
    gap: 12px;
  }

  .benefit-grid img {
    height: auto;
    aspect-ratio: 457 / 300;
  }

  .benefit-grid h3 {
    font-size: 16px;
  }

  .model-container {
    gap: 30px;
    width: 100%;
  }

  .model-products {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 60px;
  }

  .model-products figure {
    gap: 12px;
  }

  .model-products figcaption {
    font-size: 12px;
    line-height: 28.8px;
  }

  .model-logos {
    justify-content: flex-start;
    gap: 12px;
    height: 35px;
  }

  .model-logos img:first-child {
    width: 125px;
  }

  .model-logos img:last-child {
    width: 126px;
  }

  .model-table-scroll {
    width: calc(100% + 16px);
    margin-right: -16px;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
  }

  .model-table {
    min-width: 1053px;
  }

  .main-feature {
    gap: 20px;
    text-align: left;
  }

  .youtube-embed {
    width: 100%;
    aspect-ratio: 16 / 9;
    margin-bottom: 0;
  }

  .youtube-embed-truvoicelift {
    margin-top: 30px;
  }

  .main-feature h3 {
    width: 100%;
    font-size: 20px;
    line-height: 30px;
  }

  .main-feature p {
    width: 100%;
  }

  .spec-grid {
    gap: 40px;
  }

  .spec-grid article {
    gap: 12px;
  }

  .room-section {
    margin-top: 60px;
    padding: 60px 16px;
  }

  .room-heading {
    margin-bottom: 30px;
  }

  .room-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 0;
  }

  .room-group,
  .room-group-pair,
  .room-group-large {
    width: 100%;
    max-width: none;
  }

  .room-group {
    gap: 20px;
  }

  .room-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .room-card {
    gap: 12px;
  }

  .room-card h3 {
    font-size: 20px;
    line-height: 30px;
  }

  .outline-arrow-btn {
    min-height: 56px;
    padding: 12px 24px;
  }

  .system-section {
    padding-top: 60px;
  }

  .system-section .container {
    gap: 30px;
    width: 100%;
  }

  .plan-card {
    gap: 50px;
    padding: 20px 16px;
  }

  .plan-copy h3 {
    font-size: 20px;
    line-height: 30px;
  }

  .plan-copy ul {
    font-size: 16px;
    line-height: 28.8px;
  }

  .equipment-container {
    gap: 30px;
    width: 100%;
  }

  .equipment-container .section-heading p {
    display: none;
  }

  .equipment-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .equipment-diagram {
    grid-template-columns: 96px minmax(132px, 1fr) 96px;
    gap: 14px;
    min-height: auto;
    padding: 12px 0 28px;
    background: #fff;
  }

  .equipment-diagram::before,
  .equipment-diagram::after {
    content: "";
    position: absolute;
    z-index: 0;
    top: 31%;
    height: 2px;
    background: #16c15a;
    pointer-events: none;
  }

  .equipment-diagram::before {
    left: 72px;
    width: 38px;
  }

  .equipment-diagram::after {
    left: calc(100% - 110px);
    width: 54px;
  }

  .equipment-node,
  .equipment-stack,
  .speaker-node,
  .line-key {
    position: relative;
    z-index: 1;
  }

  .equipment-node,
  .speaker-node {
    font-size: 11px;
    line-height: 18px;
  }

  .mic-node img {
    width: 82px;
    height: auto;
  }

  .equipment-stack {
    position: relative;
    gap: 20px;
  }

  .equipment-stack::before,
  .equipment-stack::after {
    content: "";
    position: absolute;
    left: 50%;
    z-index: 0;
    width: 2px;
    transform: translateX(-50%);
    pointer-events: none;
  }

  .equipment-stack::before {
    top: 84px;
    height: 208px;
    background: #16c15a;
    display: none;
  }

  .equipment-stack::after {
    top: 352px;
    height: 20px;
    background: #ff8a2a;
    display: none;
  }

  .device-card {
    position: relative;
    z-index: 1;
    min-height: 84px;
    padding: 10px;
    font-size: 11px;
    line-height: 16px;
  }

  .device-card:not(:last-child)::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -34px;
    width: 2px;
    height: 34px;
    transform: translateX(-50%);
    pointer-events: none;
  }

  .device-card:nth-child(1)::after,
  .device-card:nth-child(2)::after {
    background: #16c15a;
  }

  .device-card:nth-child(3)::after {
    background: #ff8a2a;
  }

  .device-card a {
    font-size: 10px;
    line-height: 18px;
  }

  .device-card img {
    max-width: 94px;
    max-height: 54px;
  }

  .controller-card {
    grid-template-columns: 1fr 40px;
  }

  .controller-card img {
    width: 40px;
  }

  .speaker-node {
    padding-left: 0;
  }

  .speaker-images {
    gap: 8px;
    width: 74px;
  }

  .speaker-images img {
    width: 74px;
    height: 43px;
  }

  .line-key {
    right: 0;
    bottom: 0;
    width: 118px;
    justify-items: stretch;
    gap: 4px;
    font-size: 11px;
    line-height: 18px;
  }

  .line-key p {
    display: grid;
    grid-template-columns: 42px 1fr;
    gap: 8px;
    width: 100%;
  }

  .line-sample {
    width: 42px;
  }

  .equipment-option {
    gap: 18px;
    padding: 20px;
  }

  .equipment-option h3 {
    font-size: 16px;
    line-height: 30px;
  }

  .equipment-option p {
    font-size: 14px;
    line-height: 24px;
  }

  .option-item {
    grid-template-columns: 200px 1fr;
    gap: 18px;
    align-items: start;
  }

  .case-carousel {
    width: 100%;
  }

  .case-track {
    min-height: 204px;
  }

  .case-slide {
    flex-basis: 76%;
  }

  .case-track .case-slide {
    padding: 0 10px;
  }

  .case-track .slick-slide {
    padding: 0 10px;
  }

  .case-card img {
    width: 100%;
    height: 156px;
  }

  .case-card h3 {
    font-size: 14px;
    line-height: 24px;
  }

  .faq-question,
  .faq-answer {
    align-items: start;
    grid-template-columns: 26px 1fr 18px;
    gap: 18px;
    padding-right: 20px;
    padding-left: 20px;
  }

  .showroom {
    margin-top: 60px;
    padding: 60px 16px;
  }

  .showroom-card {
    grid-template-columns: 1fr;
    gap: 16px;
    width: 100%;
    padding: 32px 16px;
  }

  .showroom-card > img {
    width: 100%;
    height: 189px;
  }

  .showroom-card h3 {
    font-size: 18px;
  }

  .showroom-card p {
    font-size: 14px;
  }

  .showroom-wide {
    width: 100%;
    height: 211px;
    object-fit: cover;
    padding-top: 16px;
  }
 .showroom-wide_pc {
    display: none;
  }
 .showroom-wide_sp {
    display: block;
  }

  .cta-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    width: 100%;
  }

  .cta-grid article {
    gap: 30px;
    padding: 50px 20px;
  }

  .cta-grid p {
    font-size: 14px;
  }

  .cta-grid .pill-btn {
    width: 100%;
    min-height: 68px;
    padding: 20px 22px;
    font-size: 17px;
  }

  .footer {
    display: grid;
    gap: 10px;
    width: 100%;
    margin-top: 60px;
    padding: 40px 16px;
  }

  .footer-logo {
    width: 232px;
  }

  .footer .company {
    font-size: 16px;
  }

  .footer p {
    font-size: 14px;
  }
}