.g3-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 140px 24px 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

/* Full-bleed row so breadcrumb uses same horizontal inset as .headms (see common.css .breadcrumb) */
.g3-shell > .breadcrumb {
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.g3-hero {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 42px;
  align-items: start;
}

.g3-gallery .g3-main {
  background: #f4f6f8;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid #e8ecef;
}

.g3-main-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
}

.g3-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.g3-thumb {
  border: 1px solid #e2e6ea;
  background: #fff;
  border-radius: 10px;
  padding: 6px;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.g3-thumb img {
  width: 100%;
  height: 64px;
  object-fit: cover;
  border-radius: 8px;
  display: block;
}

.g3-thumb.active {
  border-color: #03bcbe;
  box-shadow: 0 0 0 3px rgba(3, 188, 190, 0.15);
}

.g3-title {
  margin: 0 0 6px;
  font-size: 28px;
  font-weight: 800;
  color: #1b1f23;
}

.g3-subtitle {
  font-size: 14px;
  color: #6b7680;
  margin-bottom: 12px;
}

.g3-bullets {
  margin: 0 0 18px;
  padding-left: 18px;
  color: #333;
}

.g3-bullets li {
  margin: 6px 0;
  line-height: 1.55;
  font-size: 14px;
}

.g3-spec {
  border: 1px solid #e8ecef;
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}

.g3-spec-title {
  background: #f4f6f8;
  padding: 12px 14px;
  font-weight: 800;
  font-size: 14px;
  color: #1b1f23;
  border-bottom: 1px solid #e8ecef;
}

.g3-spec-table {
  display: grid;
}

.g3-spec-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid #eef1f4;
  font-size: 13px;
}

.g3-spec-row:last-child {
  border-bottom: 0;
}

.g3-spec-k {
  color: #5c6770;
}

.g3-spec-v {
  color: #1b1f23;
  font-weight: 700;
  text-align: right;
}

.g3-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.g3-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 18px;
  border-radius: 10px;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.2px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform 0.05s ease,
    background 0.2s ease,
    border-color 0.2s ease;
}

.g3-btn:active {
  transform: translateY(1px);
}

.g3-btn-primary {
  background: #03bcbe;
  color: #fff;
}

.g3-btn-primary:hover {
  background: #02a7a9;
}

.g3-btn-ghost {
  background: #fff;
  color: #1b1f23;
  border-color: #d9dee3;
}

.g3-btn-ghost:hover {
  border-color: #03bcbe;
}

.g3-section {
  margin-top: 40px;
}

.g3-section-title {
  font-weight: 900;
  font-size: 40px;
  color: #03bcbe;
  margin-bottom: 14px;
  margin-top: 60px;
  margin-left: 120px;
}

/* Introduction media-only (match screenshot style) */
.g3-intro-title {
  text-transform: lowercase;
}

.g3-intro-mediaOnly {
  display: grid;
  gap: 22px;
}

.g3-intro-heroCard {
  width: min(900px, 100%);
  margin: 0 auto;
  box-sizing: border-box;
  border-radius: 10px;
  overflow: hidden;
  background: #111;
  aspect-ratio: 16 / 9;
}

.g3-intro-g3img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover; /* 裁掉上下留白 */
}

.g3-intro-miniGrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.g3-intro-miniimg {
  width: min(720px, 100%);
  height: auto;
  display: block;
  margin: 0 auto; /* 从左侧改为居中 */
  border: 0;
  border-radius: 0;
  background: transparent;
}

/* Bottom video player */
.g3-videoCard {
  width: min(900px, 100%);
  margin: 0 auto;
  background: #7e7e7e;
  border-radius: 14px;
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid #e8ecef;
}

.g3-videoEl {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  background: #7e7e7e;
}

.g3-videoPlay {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.85);
  background: rgba(0, 0, 0, 0.18);
  cursor: pointer;
}

.g3-videoPlay::after {
  content: "";
  position: absolute;
  left: 26px;
  top: 20px;
  border-style: solid;
  border-width: 12px 0 12px 18px;
  border-color: transparent transparent transparent rgba(255, 255, 255, 0.92);
}

/* legacy placeholder removed */

/* GET IN TOUCH module */
.g3-touch-wrap {
  background: #f5f7fa;
  border-top: 1px solid #eef1f4;
  border-bottom: 1px solid #eef1f4;
  padding: 34px 18px;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.g3-touch {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.g3-touch-title {
  margin: 0 0 10px;
  font-size: clamp(22px, 3vw, 40px);
  letter-spacing: 1px;
  color: #1b1f23;
  font-weight: 800;
}

.g3-touch-sub {
  margin: 0 auto 16px;
  max-width: 820px;
  color: rgba(0, 0, 0, 0.45);
  font-size: 14px;
  line-height: 1.6;
}

.g3-touch-subject {
  font-size: 13px;
  color: rgba(0, 0, 0, 0.35);
  margin-bottom: 30px;
}

.g3-touch-subject span {
  color: #03bcbe;
}

.g3-touch-form {
  max-width: 640px;
  margin: 0 auto;
  display: grid;
  gap: 30px;
}

.g3-touch-input,
.g3-touch-textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #e7ebef;
  background: #fff;
  border-radius: 6px;
  padding: 14px 16px;
  font-size: 14px;
  color: #111;
  outline: none;
}

.g3-touch-input::placeholder,
.g3-touch-textarea::placeholder {
  color: rgba(0, 0, 0, 0.35);
}

.g3-touch-textarea {
  min-height: 160px;
  resize: vertical;
}

.g3-touch-submit {
  width: 278px;
  height: 56px;
  margin: 18px auto 64px;
  border: 0;
  border-radius: 8px;
  background: #03bcbe;
  color: #fff;
  font-weight: 800;
  letter-spacing: 1px;
  cursor: pointer;
}

.g3-touch-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

@media screen and (max-width: 750px) {
  .g3-shell {
    padding: 140px 5vw 0;
  }

  .g3-hero {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .g3-thumb img {
    height: 52px;
  }

  .g3-title {
    font-size: 20px;
  }

  /* Section titles (e.g. introduction): align left and match title size above */
  .g3-section-title {
    margin-left: 0;
    margin-top: 36px;
    font-size: 24px;
    text-align: left;
  }

  .g3-btn {
    font-size: 13px;
    height: 40px;
    padding: 0 14px;
  }

  .g3-spec-title {
    font-size: 13px;
  }

  .g3-intro-miniGrid {
    grid-template-columns: 1fr;
  }

  .g3-videoCard {
    width: 100%;
    border-radius: 10px;
  }

  .g3-intro-mediaOnly {
    gap: 16px;
  }

  .g3-intro-heroCard {
    border-radius: 8px;
    aspect-ratio: 4 / 3; /* mobile: better height without blank */
  }

  .g3-touch-wrap {
    padding: 20px 14px;
  }

  .g3-touch-title {
    font-size: 22px;
    margin-bottom: 8px;
  }

  .g3-touch-sub {
    margin-bottom: 10px;
  }

  .g3-touch-subject {
    margin-bottom: 22px;
  }

  .g3-touch-form {
    gap: 22px;
  }

  .g3-touch-submit {
    width: 80%;
  }
}