#ai-page[hidden],
#ai-error[hidden] {
  display: none;
}
.ai-hero-art {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 440px;
  padding: 30px;
  border-radius: 14px;
  background: linear-gradient(135deg, #1c65b5, #65b1f0);
  color: white;
  box-shadow: 0 22px 55px #155cb01c;
}
.ai-art-label,
.ai-art-caption,
.ai-art-note {
  position: relative;
  z-index: 2;
  display: block;
  font-size: 8px;
  letter-spacing: 1.5px;
}
.ai-art-index {
  position: absolute;
  top: 22px;
  right: 24px;
  font-size: 100px;
  color: #ffffff18;
  line-height: 1;
}
.ai-art-title {
  position: relative;
  z-index: 2;
  white-space: pre-line;
  font-size: 43px;
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1.5;
  margin: 48px 0 20px;
}
.ai-art-orbit {
  position: absolute;
  z-index: -1;
  width: 350px;
  height: 350px;
  right: -80px;
  top: 50px;
  border-radius: 50%;
  border: 42px solid #b5e0ff40;
  box-shadow:
    inset 4px 5px 15px #ffffff55,
    0 0 0 1px #d7f1ff66;
  transform: rotateX(24deg) rotateY(-26deg);
}
.ai-art-orbit-small {
  width: 210px;
  height: 210px;
  right: 22px;
  top: 159px;
  border-width: 22px;
  opacity: 0.65;
}
.ai-art-spark {
  position: absolute;
  right: 24px;
  top: 218px;
  color: #d6f0ff;
  font-size: 67px;
}
.ai-art-stages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
  margin-top: 33px;
}
.ai-art-stages > div {
  padding: 15px 12px;
  display: flex;
  gap: 10px;
  align-items: center;
  border: 1px solid #ffffff70;
  border-radius: 7px;
  background: #f6fbfff0;
  color: var(--blue);
}
.ai-art-stages span {
  font-size: 9px;
  color: #6e9cc4;
}
.ai-art-stages strong {
  font-size: 12px;
  font-weight: 500;
}
.ai-art-note {
  margin-top: 17px;
  letter-spacing: 0.5px;
  color: #e0f0ff;
}
[data-ai-type="avatar"] .ai-hero-art {
  background: linear-gradient(135deg, #15447d, #3489d2);
}
[data-ai-type="avatar"] .ai-art-orbit {
  border-radius: 35% 35% 45% 45%;
  transform: rotate(-15deg);
}
[data-ai-type="social"] .ai-hero-art {
  background: linear-gradient(130deg, #92cdfa, #d5ebfc);
  color: var(--blue);
}
[data-ai-type="social"] .ai-art-orbit {
  border-radius: 40px;
  border-color: #ffffff75;
  transform: rotate(22deg);
}
[data-ai-type="social"] .ai-art-note {
  color: #426f94;
}
.ai-category-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}
.ai-category-nav [role="tab"] {
  display: flex;
  background: transparent;
  justify-content: center;
  gap: 17px;
  padding: 26px 15px;
  border-bottom: 3px solid transparent;
  color: #6d8499;
}
.ai-category-nav [aria-selected="true"],
.ai-category-nav [role="tab"]:hover {
  border-bottom-color: var(--sky);
  color: var(--blue);
  background: linear-gradient(transparent, #edf6fd);
}
.ai-category-nav [role="tab"] > span {
  font-size: 11px;
  align-self: center;
  color: #7198b9;
}
.ai-category-nav strong {
  font-size: 14px;
  font-weight: 500;
}
#ai-content-panel {
  overflow-anchor: none;
}
#ai-content-panel:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}
.ai-intro-copy {
  max-width: 920px;
  margin-inline: auto;
  text-align: center;
}
.ai-intro-copy .eyebrow {
  justify-content: center;
}
.ai-intro-copy h2 {
  margin-bottom: 25px;
}
#ai-intro-paragraphs p {
  font-size: 14px;
  color: var(--muted);
  line-height: 2;
  margin-top: 15px;
}
.ai-benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 48px;
  padding-top: 35px;
  border-top: 1px solid var(--line);
}
.ai-benefit-number {
  font-size: 25px;
  color: var(--sky);
}
.ai-benefits h3 {
  font-size: 19px;
  margin: 14px 0 10px;
}
.ai-benefits p {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.9;
}
.ai-services-heading {
  padding-bottom: 34px;
}
.ai-service-index {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.ai-service-index a {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 10px 15px;
  font-size: 12px;
  color: var(--blue);
  transition: background 0.2s;
}
.ai-service-index a:hover {
  background: var(--pale);
}
.ai-feature {
  padding: 65px 0;
  background: #f2f7fc;
}
.ai-feature:nth-child(even) {
  background: white;
}
.ai-feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 85px;
}
.ai-feature:nth-child(even) .ai-feature-art {
  order: 2;
}
.ai-feature-art {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 335px;
  background: linear-gradient(125deg, #c0e1fa, #e5f3ff);
  border: 1px solid #d0e8f9;
  border-radius: 12px;
  padding: 30px;
}
.ai-feature-art-label,
.ai-feature-art-foot {
  display: block;
  position: relative;
  z-index: 2;
  font-size: 8px;
  letter-spacing: 1.6px;
  color: #366a97;
}
.ai-feature-art-title {
  position: relative;
  z-index: 2;
  margin-top: 38px;
  white-space: pre-line;
  font-size: 34px;
  line-height: 1.5;
  letter-spacing: -1px;
  font-weight: 700;
  color: var(--blue);
}
.ai-feature-motif {
  position: absolute;
  right: -30px;
  top: 44px;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  border: 24px solid #ffffff9c;
  box-shadow:
    0 0 0 1px #fff9,
    inset 3px 8px 20px #478cc826;
  transform: rotate(-20deg);
  display: grid;
  place-items: center;
  z-index: -1;
}
.ai-feature-motif span {
  font-size: 85px;
  color: #3e8ccc32;
}
.ai-feature-tags {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 26px;
}
.ai-feature-tags span {
  border: 1px solid #fff;
  background: #ffffffb0;
  border-radius: 4px;
  padding: 7px 10px;
  font-size: 8px;
  letter-spacing: 0.8px;
  color: #376c9a;
}
.ai-feature-art-foot {
  margin-top: 26px;
  font-size: 7px;
  letter-spacing: 1px;
}
.ai-feature:nth-child(2) .ai-feature-art {
  background: linear-gradient(135deg, #1e609f, #3085cf);
  border-color: transparent;
}
.ai-feature:nth-child(2) .ai-feature-art-title,
.ai-feature:nth-child(2) .ai-feature-art-label,
.ai-feature:nth-child(2) .ai-feature-art-foot {
  color: #eff8ff;
}
.ai-feature:nth-child(2) .ai-feature-motif {
  border-radius: 38px;
  border-color: #b2ddff45;
  transform: rotate(20deg);
}
.ai-feature:nth-child(2) .ai-feature-motif span {
  color: #a7d9ff55;
  font-size: 70px;
}
.ai-feature:nth-child(3) .ai-feature-motif {
  border-radius: 35px;
  width: 185px;
  height: 250px;
  border-width: 12px;
  transform: rotate(15deg);
}
.ai-feature-copy h3 {
  font-size: 28px;
  line-height: 1.5;
  letter-spacing: -0.7px;
}
.ai-feature-description {
  font-size: 14px;
  line-height: 2;
  color: var(--muted);
  margin-top: 20px;
}
.ai-feature-points {
  padding: 0;
  margin: 22px 0 25px;
  list-style: none;
}
.ai-feature-points li {
  display: flex;
  gap: 10px;
  font-size: 12px;
  line-height: 1.9;
  margin-top: 10px;
}
.ai-feature-points li::before {
  content: "+";
  font-weight: 600;
  color: var(--blue);
}
.ai-scope-note {
  background: var(--pale);
  border-left: 3px solid var(--sky);
  padding: 20px 24px;
  margin-top: 38px;
  font-size: 12px;
  line-height: 1.9;
  color: var(--muted);
}
.ai-faq {
  background: #f6f9fc;
}
/* 裝飾獨立運動，文字與容器尺寸保持穩定，避免切換分類時跳動。 */
.ai-body .ai-art-orbit {
  --orbit-angle: -26deg;
  animation: ai-orbit-turn 14s linear infinite;
}
.ai-body .ai-art-orbit-small {
  animation-duration: 10s;
  animation-direction: reverse;
}
.ai-body[data-ai-type="avatar"] .ai-art-orbit { --orbit-angle: -15deg; }
.ai-body[data-ai-type="social"] .ai-art-orbit { --orbit-angle: 22deg; }
.ai-body .ai-art-spark {
  animation: ai-spark-turn 12s linear infinite;
}
.ai-body .ai-art-index,
.ai-body .ai-feature-motif span {
  animation: ai-symbol-breathe 5s ease-in-out infinite;
}
.ai-body .ai-feature-motif {
  --motif-angle: -20deg;
  border-top-color: #ffffffeb;
  animation: ai-motif-drift 7s ease-in-out infinite;
}
.ai-body .ai-feature:nth-child(2) .ai-feature-motif {
  --motif-angle: 20deg;
  animation-delay: -2s;
}
.ai-body .ai-feature:nth-child(3) .ai-feature-motif {
  --motif-angle: 15deg;
  animation-delay: -4s;
}
.ai-body .ai-feature-motif::after {
  content: "";
  position: absolute;
  inset: -34px;
  border: 1px dashed #65b1f080;
  border-top: 2px solid #ffffffaa;
  border-radius: inherit;
  pointer-events: none;
  animation: ai-spark-turn 16s linear infinite reverse;
}
.ai-body .ai-feature:nth-child(2) .ai-feature-motif::after {
  border-color: #b2ddff80;
}
.ai-body .ai-art-stages > div,
.ai-body .ai-feature-tags span {
  animation: ai-chip-glow 5s ease-in-out infinite;
}
.ai-body .ai-art-stages > div:nth-child(2),
.ai-body .ai-feature-tags span:nth-child(2n) { animation-delay: -1.6s; }
.ai-body .ai-art-stages > div:nth-child(3),
.ai-body .ai-feature-tags span:nth-child(3n) { animation-delay: -3.2s; }
.ai-body .ai-benefit-number,
.ai-body #ai-workflow .step-number > span,
.ai-body .promotion-link-arrow {
  display: inline-block;
  animation: ai-icon-float 5s ease-in-out infinite;
}
.ai-body .ai-benefits article:nth-child(2) .ai-benefit-number,
.ai-body #ai-workflow article:nth-child(2n) .step-number > span {
  animation-delay: -2s;
}
.ai-body .ai-benefits article,
.ai-body #ai-workflow article,
.ai-body .promotion-related-card,
.ai-body .ai-art-stages > div,
.ai-body .ai-feature-tags span,
.ai-body #ai-faqs details {
  transition: box-shadow .3s ease, background-color .3s ease;
}
.ai-body .ai-benefits article:hover,
.ai-body #ai-workflow article:hover,
.ai-body .promotion-related-card:hover,
.ai-body .promotion-related-card:focus-visible {
  box-shadow: 0 12px 28px #155cb015;
}
.ai-body #ai-faqs summary > span {
  transition: transform .3s ease;
}
.ai-body #ai-faqs details[open] summary > span {
  transform: rotate(45deg);
}
@keyframes ai-orbit-turn {
  from { transform: rotateX(24deg) rotateY(var(--orbit-angle)) rotate(0deg); }
  to { transform: rotateX(24deg) rotateY(var(--orbit-angle)) rotate(360deg); }
}
@keyframes ai-spark-turn {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes ai-motif-drift {
  0%, 100% { transform: translate(0, 0) rotate(var(--motif-angle)); }
  50% { transform: translate(-16px, -14px) rotate(calc(var(--motif-angle) + 12deg)); }
}
@keyframes ai-symbol-breathe {
  0%, 100% { opacity: .65; transform: scale(.96); }
  50% { opacity: 1; transform: scale(1.04); }
}
@keyframes ai-chip-glow {
  0%, 100% { box-shadow: 0 0 0 transparent; }
  50% { box-shadow: 0 0 16px #65b1f045; }
}
@keyframes ai-icon-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}
@media (max-width: 1150px) {
  .ai-feature-grid {
    gap: 45px;
  }
  .ai-art-title {
    font-size: 36px;
  }
  .ai-art-stages > div {
    gap: 7px;
    padding: 13px 9px;
  }
  .ai-art-stages strong {
    font-size: 11px;
  }
}
@media (max-width: 900px) {
  .ai-hero-art {
    padding: 24px;
    min-height: 405px;
  }
  .ai-art-title {
    font-size: 29px;
    margin-top: 42px;
  }
  .ai-art-label,
  .ai-art-caption {
    font-size: 7px;
    letter-spacing: 1px;
  }
  .ai-art-stages > div {
    flex-direction: column;
  }
  .ai-art-spark {
    font-size: 48px;
    top: 195px;
  }
  .ai-category-nav strong {
    font-size: 13px;
  }
  .ai-feature-grid {
    gap: 30px;
  }
  .ai-feature-art {
    padding: 24px;
  }
  .ai-feature-art-title {
    font-size: 28px;
  }
  .ai-feature-art-label {
    font-size: 7px;
    letter-spacing: 1px;
  }
  .ai-feature-copy h3 {
    font-size: 24px;
  }
  .ai-feature-description {
    font-size: 13px;
  }
}
@media (max-width: 700px) {
  .ai-hero-art {
    padding: 26px;
    min-height: 415px;
  }
  .ai-art-title {
    font-size: 35px;
  }
  .ai-art-stages > div {
    flex-direction: row;
    justify-content: center;
    padding: 14px 8px;
  }
  .ai-art-caption {
    font-size: 7px;
  }
  .ai-category-nav [role="tab"] {
    flex-direction: column;
    text-align: center;
    gap: 8px;
    padding: 21px 5px;
  }
  .ai-category-nav strong {
    font-size: 12px;
  }
  .ai-intro-copy {
    text-align: left;
  }
  .ai-intro-copy .eyebrow {
    justify-content: flex-start;
  }
  #ai-intro-paragraphs p {
    font-size: 13px;
  }
  .ai-benefits {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 30px;
    padding-top: 28px;
  }
  .ai-benefits h3 {
    margin-top: 9px;
  }
  .ai-benefits article:not(:last-child) {
    border-bottom: 1px solid var(--line);
    padding-bottom: 24px;
  }
  .ai-service-index {
    gap: 8px;
  }
  .ai-service-index a {
    font-size: 11px;
    padding: 10px 12px;
  }
  .ai-feature {
    padding: 38px 0;
  }
  .ai-feature-grid {
    grid-template-columns: 1fr;
  }
  .ai-feature:nth-child(even) .ai-feature-art {
    order: 0;
  }
  .ai-feature-art {
    min-height: 320px;
    padding: 26px;
  }
  .ai-feature-art-title {
    font-size: 31px;
  }
  .ai-feature-copy h3 {
    font-size: 24px;
  }
  .ai-scope-note {
    padding: 18px;
    font-size: 11px;
  }
}
@media (max-width: 380px) {
  .ai-hero-art {
    padding: 22px;
  }
  .ai-art-title {
    font-size: 30px;
  }
  .ai-art-stages > div {
    flex-direction: column;
  }
  .ai-art-label,
  .ai-art-caption {
    letter-spacing: 0.5px;
  }
  .ai-category-nav strong {
    font-size: 11px;
  }
  .ai-feature-art-title {
    font-size: 27px;
  }
  .ai-feature-copy h3 {
    font-size: 22px;
  }
}