.iot-mass-page {
  --mass-primary: #128cff;
  --mass-primary-soft: #69b7ff;
  --mass-text: #2f3548;
  --mass-muted: #666666;
  --mass-copy: #717171;
  --mass-surface: #f9fcff;
  --mass-surface-strong: #f4f8fb;
  --mass-card-shadow: 0 12px 24px rgba(0, 0, 0, 0.05);
  background: #ffffff;
}

.iot-mass-main {
  overflow: clip;
  background: #ffffff;
}

.iot-mass-hero {
  position: relative;
  min-height: 400px;
}

.iot-mass-hero__bg {
  position: absolute;
  inset: 0;
  background: url("./assets/iot-mass-product/hero-bg.png") center top / cover no-repeat;
}

.iot-mass-hero__inner {
  position: relative;
  min-height: 400px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 149px;
}

.iot-mass-title,
.iot-mass-heading {
  width: min(519px, 100%);
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  color: var(--mass-text);
}

.iot-mass-title h1,
.iot-mass-heading h2,
.iot-mass-intro__copy h2 {
  margin: 0;
  color: var(--mass-text);
  font-size: 32px;
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.iot-mass-title__en,
.iot-mass-heading span,
.iot-mass-intro__en {
  display: block;
  margin-top: 10px;
  font-family: "Outfit", sans-serif;
  font-size: 16px;
  line-height: 1.2;
  font-weight: 300;
  color: var(--mass-muted);
  letter-spacing: 0.02em;
}

.iot-mass-title__summary,
.iot-mass-heading p,
.iot-mass-intro__summary {
  margin: 12px auto 0;
  font-size: 16px;
  line-height: 24px;
  color: var(--mass-text);
  letter-spacing: 0.2em;
}

.iot-mass-intro {
  background: #ffffff;
  overflow: hidden;
}

.iot-mass-intro__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(520px, 638px);
  gap: 40px;
  align-items: center;
  min-height: auto;
  padding: 96px 0 84px;
}

.iot-mass-intro__copy {
  position: static;
  width: 100%;
  max-width: 668px;
  color: var(--mass-text);
  align-self: center;
  transform: translateY(-80px);
}

.iot-mass-intro__en {
  margin-top: 20px;
}

.iot-mass-intro__summary {
  margin-top: 24px;
  margin-left: 0;
  letter-spacing: 0.06em;
}

.iot-mass-intro__visual {
  position: relative;
  justify-self: end;
  width: min(638px, 100%);
  height: auto;
  padding-top: 56px;
  margin-top: 80px;
}

.iot-mass-intro__arc {
  position: absolute;
  left: -14px;
  top: -106px;
  width: 339px;
  height: auto;
  z-index: 10;
}

.iot-mass-intro__chip {
  position: absolute;
  left: 83px;
  top: -79px;
  width: 145px;
  height: auto;
  z-index: 30;
}

.iot-mass-intro__robot {
  position: relative;
  left: 0;
  top: 0;
  width: 100%;
  height: auto;
}

.iot-mass-features {
  background: #f2f9ff;
  padding: 60px 0 60px;
}

.iot-mass-feature-list {
  margin-top: 68px;
  display: grid;
  gap: 30px;
}

.iot-mass-feature-card {
  position: relative;
  padding-top: 78px;
}

.iot-mass-feature-card__tab {
  position: absolute;
  left: 0;
  top: 0;
  width: 520px;
  max-width: calc(100% - 72px);
  height: 58px;
  border-radius: 12px;
  background: linear-gradient(90deg, var(--mass-primary) 0%, var(--mass-primary-soft) 100%);
  box-shadow: 0 14px 30px rgba(39, 133, 248, 0.15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.iot-mass-feature-card__tab span {
  color: #ffffff;
  font-size: 24px;
  line-height: 1.2;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.iot-mass-feature-card__panel {
  min-height: 240px;
  border-radius: 12px;
  background: var(--mass-surface);
  box-shadow: var(--mass-card-shadow);
  display: grid;
  grid-template-columns: 176px minmax(0, 1fr);
  align-items: center;
  gap: 24px;
  padding: 32px 48px 32px 40px;
}

.iot-mass-feature-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.iot-mass-feature-card__icon img {
  display: block;
  height: auto;
}

.iot-mass-feature-card__icon--data img {
  width: 120px;
}

.iot-mass-feature-card__icon--location img {
  width: 120px;
}

.iot-mass-feature-card__icon--device img {
  width: 120px;
}

.iot-mass-feature-card__icon--fault img {
  width: 120px;
}

.iot-mass-feature-card__icon--ota img {
  width: 120px;
}

.iot-mass-feature-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.iot-mass-feature-card__list li {
  position: relative;
  margin: 0;
  padding-left: 20px;
  color: var(--mass-copy);
  font-size: 20px;
  line-height: 42px;
  letter-spacing: 0.08em;
}

.iot-mass-feature-card__list li::before {
  content: "·";
  position: absolute;
  left: 0;
  top: 0;
  color: #2085f9;
  font-weight: 600;
}

.iot-mass-advantages {
  background: #f2f9ff;
  padding: 60px 0px;
}

.iot-mass-adv-grid {
  margin-top: 72px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 38px;
}

.iot-mass-adv-card {
  min-height: 400px;
  border-radius: 24px;
  background: linear-gradient(147.221deg, #6ab7ff 4.84%, #0084ff 94.07%);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
  padding: 48px 26px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  overflow: hidden;
}

.iot-mass-adv-card__text {
  margin: 0;
  max-width: 318px;
  text-align: center;
  color: #ffffff;
  font-size: 15px;
  line-height: 28px;
  letter-spacing: 0.04em;
  font-weight: 500;
}

.iot-mass-adv-card__visual {
  display: block;
  margin-top: 0;
  max-width: 100%;
  height: auto;
  flex-shrink: 0;
}

.iot-mass-adv-card__visual--integrated {
  width: 220px;
}

.iot-mass-adv-card__visual--housing {
  width: 190px;
}

.iot-mass-adv-card__cert-wrap {
  position: relative;
  width: 215px;
  margin-top: 0;
  flex-shrink: 0;
}

.iot-mass-adv-card__visual--cert {
  width: 215px;
}

.iot-mass-adv-card__cert-icon {
  position: absolute;
  left: 79px;
  top: 58px;
  width: 35px;
  height: 35px;
}

.iot-mass-adv-card__ellipsis {
  position: absolute;
  left: 128px;
  top: 106px;
  color: #000000;
  font-size: 24px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.iot-mass-summary {
  background: #ffffff;
  padding: 73px 0 120px;
}

.iot-mass-spec {
  margin-top: 72px;
  border-radius: 12px;
  box-shadow: var(--mass-card-shadow);
}

.iot-mass-spec__table {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: #f7fbff;
}

.iot-mass-spec__rows {
  position: relative;
  z-index: 1;
  counter-reset: mass-spec-row;
}

.iot-mass-spec__header,
.iot-mass-spec__row {
  display: grid;
  grid-template-columns: 130px 200px minmax(0, 1fr);
}

.iot-mass-spec__header {
  min-height: 90px;
  background: linear-gradient(90deg, var(--mass-primary) 0%, var(--mass-primary-soft) 100%);
  color: #ffffff;
}

.iot-mass-spec__header-cell {
  display: flex;
  align-items: center;
  padding: 20px 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.7);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
}

.iot-mass-spec__header-cell:last-child {
  border-right: 0;
}

.iot-mass-spec__header-cell--no {
  justify-content: center;
  padding-inline: 12px;
}

.iot-mass-spec__row {
  min-height: 64px;
  border-bottom: 1px solid rgba(47, 53, 72, 0.14);
  align-items: stretch;
  counter-increment: mass-spec-row;
}

.iot-mass-spec__row::before {
  content: counter(mass-spec-row);
  display: flex;
  align-items: center;
  justify-content: center;
  grid-column: 1;
  background: linear-gradient(90deg, var(--mass-primary) 0%, var(--mass-primary-soft) 100%);
  border-right: 1px solid rgba(255, 255, 255, 0.7);
  color: #ffffff;
  font-size: 18px;
  line-height: 1;
}

.iot-mass-spec__row:last-child {
  border-bottom: 0;
}

.iot-mass-spec__watermark {
  position: absolute;
  right: 38px;
  bottom: 35px;
  width: 394px;
  height: auto;
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
}

.iot-mass-spec__key,
.iot-mass-spec__value {
  display: flex;
  align-items: center;
}

.iot-mass-spec__key {
  grid-column: 2;
  justify-content: flex-start;
  text-align: left;
  padding: 14px 22px;
  border-right: 1px solid rgba(47, 53, 72, 0.14);
  color: var(--mass-text);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.iot-mass-spec__value {
  grid-column: 3;
  padding: 14px 28px;
  color: var(--mass-text);
  font-size: 16px;
  line-height: 26px;
  letter-spacing: 0.08em;
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.iot-mass-spec__value--compact {
  letter-spacing: 0.04em;
  line-height: 26px;
}

.iot-mass-spec__value--multi {
  line-height: 26px;
}

@media (max-width: 1420px) {
  .iot-mass-intro__inner {
    padding: 72px 0 84px;
    grid-template-columns: minmax(0, 1fr) minmax(420px, 48%);
    gap: 32px;
    align-items: center;
  }

  .iot-mass-intro__copy,
  .iot-mass-intro__visual {
    max-width: 100%;
    height: auto;
  }

  .iot-mass-intro__copy {
    margin-left: 0;
    transform: translateY(-80px);
  }

  .iot-mass-intro__visual {
    justify-self: end;
    width: min(638px, 100%);
    position: relative;
    padding-top: 30px;
    bottom: -40px;
  }

  .iot-mass-intro__arc {
    left: -2%;
    top: -20px;
    width: min(339px, 54%);
  }

  .iot-mass-intro__chip {
    left: 13%;
    top: 10px;
    width: min(145px, 24%);
  }

  .iot-mass-intro__robot {
    position: relative;
    width: 100%;
  }
}

@media (max-width: 1240px) {
  .iot-mass-feature-card__panel {
    padding: 28px 34px 28px 26px;
  }

  .iot-mass-feature-card__list li {
    font-size: 18px;
    line-height: 36px;
  }

  .iot-mass-adv-grid {
    gap: 24px;
  }

  .iot-mass-adv-card {
    min-height: 422px;
    padding-left: 20px;
    padding-right: 20px;
  }

  .iot-mass-adv-card__text {
    font-size: 16px;
    line-height: 28px;
  }

  .iot-mass-spec__header,
  .iot-mass-spec__row {
    grid-template-columns: 92px 190px minmax(0, 1fr);
  }

  .iot-mass-spec__header-cell {
    padding-inline: 22px;
    font-size: 17px;
  }

  .iot-mass-spec__key {
    padding-inline: 18px;
    font-size: 15px;
  }

  .iot-mass-spec__value {
    padding: 13px 20px;
    font-size: 15px;
    line-height: 26px;
  }

  .iot-mass-spec__watermark {
    width: 280px;
    right: 16px;
    bottom: 16px;
  }
}

@media (max-width: 980px) {
  .iot-mass-intro {
    overflow: visible;
  }

  .iot-mass-title h1,
  .iot-mass-heading h2,
  .iot-mass-intro__copy h2 {
    font-size: 28px;
  }

  .iot-mass-title__summary,
  .iot-mass-heading p,
  .iot-mass-intro__summary {
    letter-spacing: 0.08em;
  }

  .iot-mass-intro__inner {
    min-height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 40px 0 46px;
  }

  .iot-mass-intro__copy {
    position: static;
    left: auto;
    top: auto;
    width: 100%;
    max-width: 760px;
    text-align: center;
    margin: 0 auto;
    transform: none;
  }

  .iot-mass-intro__summary {
    margin-left: auto;
    margin-right: auto;
  }

  .iot-mass-intro__visual {
    position: relative;
    right: auto;
    top: auto;
    order: 2;
    width: min(92vw, 480px);
    max-width: 100%;
    height: auto;
    min-height: 0;
    padding-top: 84px;
    margin: 10px auto 0;
    overflow: visible;
    background: none;
    display: flex;
    justify-content: center;
    align-items: flex-end;
  }

  .iot-mass-intro__arc {
    left: 50%;
    top: 0;
    width: min(72%, 300px);
    transform: translateX(-50%);
    z-index: 1;
  }

  .iot-mass-intro__chip {
    left: 50%;
    top: 18px;
    width: min(28%, 124px);
    transform: translateX(-50%);
    z-index: 3;
    display: block;
    font-size: 0;
    color: transparent;
  }

  .iot-mass-intro__robot {
    position: relative;
    left: 0;
    top: 0;
    width: min(100%, 460px);
    height: auto;
    display: block;
    margin: 0;
    z-index: 2;
  }

  .iot-mass-intro__visual.reveal {
    opacity: 1;
    transform: none;
  }

  .iot-mass-features,
  .iot-mass-advantages {
    padding-top: 48px;
  }

  .iot-mass-feature-list {
    margin-top: 52px;
  }

  .iot-mass-feature-card {
    padding-top: 68px;
  }

  .iot-mass-feature-card__tab {
    max-width: calc(100% - 20px);
  }

  .iot-mass-feature-card__tab span {
    font-size: 22px;
  }

  .iot-mass-feature-card__panel {
    grid-template-columns: 136px minmax(0, 1fr);
    gap: 14px;
    padding: 24px 20px 24px 18px;
  }

  .iot-mass-feature-card__icon img {
    width: min(120px, 100%) !important;
  }

  .iot-mass-feature-card__list li {
    font-size: 16px;
    line-height: 30px;
    letter-spacing: 0.05em;
  }

  .iot-mass-adv-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 50px;
  }

  .iot-mass-adv-card {
    min-height: 375px;
    border-radius: 18px;
    padding-top: 42px;
  }

  .iot-mass-summary {
    padding: 62px 0 92px;
  }

  .iot-mass-spec__header,
  .iot-mass-spec__row {
    grid-template-columns: 70px 160px minmax(0, 1fr);
  }

  .iot-mass-spec__header {
    min-height: 76px;
  }

  .iot-mass-spec__row {
    min-height: 60px;
  }

  .iot-mass-spec__key {
    padding-inline: 14px;
    font-size: 14px;
  }

  .iot-mass-spec__value {
    padding-inline: 16px;
    font-size: 14px;
    line-height: 24px;
    letter-spacing: 0.04em;
  }
}

@media (max-width: 760px) {
  .iot-mass-hero {
    min-height: 320px;
  }

  .iot-mass-hero__inner {
    min-height: 320px;
    padding-top: 96px;
  }

  .iot-mass-title h1,
  .iot-mass-heading h2,
  .iot-mass-intro__copy h2 {
    font-size: 24px;
  }

  .iot-mass-title__en,
  .iot-mass-heading span,
  .iot-mass-intro__en {
    margin-top: 8px;
    font-size: 14px;
  }

  .iot-mass-title__summary,
  .iot-mass-heading p,
  .iot-mass-intro__summary {
    font-size: 14px;
    line-height: 24px;
  }

  .iot-mass-intro__inner {
    gap: 14px;
    padding: 24px 0 36px;
  }

  .iot-mass-intro__visual {
    width: min(92vw, 360px);
    height: auto;
    min-height: 0;
    padding-top: 76px;
    margin-top: 4px;
    margin-bottom: 4px;
  }

  .iot-mass-intro__arc {
    left: 50%;
    top: 0;
    width: min(86%, 280px);
    transform: translateX(-50%);
  }

  .iot-mass-intro__chip {
    left: 50%;
    top: 12px;
    width: min(34%, 108px);
    transform: translateX(-50%);
  }

  .iot-mass-intro__summary {
    letter-spacing: 0.03em;
    margin-top: 16px;
  }

  .iot-mass-intro__copy.reveal,
  .iot-mass-intro__visual.reveal {
    opacity: 1;
    transform: none;
  }

  .iot-mass-feature-list {
    gap: 22px;
    margin-top: 40px;
  }

  .iot-mass-features {
    padding-top: 52px;
  }

  .iot-mass-feature-card {
    padding-top: 58px;
  }

  .iot-mass-feature-card__tab {
    height: 50px;
    max-width: 100%;
  }

  .iot-mass-feature-card__tab span {
    font-size: 19px;
  }

  .iot-mass-feature-card__panel {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 20px 16px 22px;
  }

  .iot-mass-feature-card__icon {
    justify-content: flex-start;
  }

  .iot-mass-feature-card__icon img {
    width: min(104px, 32vw) !important;
  }

  .iot-mass-feature-card__list li {
    font-size: 14px;
    line-height: 26px;
    letter-spacing: 0.03em;
  }

  .iot-mass-adv-card {
    min-height: 296px;
    padding-top: 22px;
    gap: 12px;
  }

  .iot-mass-adv-card__text {
    font-size: 16px;
    line-height: 26px;
  }

  .iot-mass-adv-card__visual--integrated,
  .iot-mass-adv-card__visual--housing,
  .iot-mass-adv-card__cert-wrap,
  .iot-mass-adv-card__visual--cert {
    width: min(170px, 50vw);
  }

  .iot-mass-adv-card__cert-icon {
    width: min(30px, 9vw);
    height: min(30px, 9vw);
    left: 36%;
    top: 27%;
  }

  .iot-mass-adv-card__ellipsis {
    left: 60%;
    top: 50%;
    font-size: 20px;
  }

  .iot-mass-summary {
    padding: 50px 0 72px;
  }

  .iot-mass-spec {
    margin-top: 44px;
  }

  .iot-mass-spec__header,
  .iot-mass-spec__row {
    grid-template-columns: 44px minmax(92px, 0.8fr) minmax(0, 2fr);
  }

  .iot-mass-spec__header {
    min-height: 64px;
  }

  .iot-mass-spec__header-cell {
    padding: 10px 12px;
    font-size: 13px;
  }

  .iot-mass-spec__header-cell--no {
    padding-inline: 4px;
  }

  .iot-mass-spec__row {
    min-height: 0;
  }

  .iot-mass-spec__row::before {
    font-size: 13px;
  }

  .iot-mass-spec__key {
    justify-content: flex-start;
    text-align: left;
    min-height: 58px;
    padding: 10px 8px;
    border-right: 1px solid rgba(47, 53, 72, 0.14);
    border-bottom: 0;
    font-size: 12px;
  }

  .iot-mass-spec__value {
    padding: 10px 8px;
    font-size: 12px;
    line-height: 20px;
    letter-spacing: 0;
  }

  .iot-mass-spec__value--compact,
  .iot-mass-spec__value--multi {
    line-height: 24px;
  }

  .iot-mass-spec__watermark {
    width: 190px;
    right: -16px;
    bottom: -6px;
    opacity: 0.04;
  }
}

@media (max-width: 520px) {
  .iot-mass-intro__visual {
    width: min(94vw, 332px);
    padding-top: 70px;
    margin-top: 2px;
  }

  .iot-mass-intro__arc {
    width: min(88%, 246px);
  }

  .iot-mass-intro__chip {
    top: 10px;
    width: min(34%, 94px);
  }

  .iot-mass-intro__robot {
    width: 100%;
  }
}