/* ==========================================================================
   九彩云官网 — “小彩” AI 智能体页（ai.html）
   依赖 site-chrome.css（页眉 / 页脚 / 按钮）与 index-ai.css（通用区块）
   ========================================================================== */

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.ai-agent-hero {
  display: flex;
  align-items: flex-start;
  min-height: 500px;
  background: #f2f6fb url("../images/ai/hero-banner.png") right center / cover no-repeat;
  overflow: hidden;
}

.ai-agent-hero__copy {
  max-width: 820px;
  padding: 111px 0 0;
}

.ai-agent-hero h1 {
  color: #333;
  font-size: 72px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0;
}

.ai-agent-hero__brand {
  background: linear-gradient(96deg, #ef5a76 0%, #e21fa3 34%, #e51f5c 68%, #e31b2f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.ai-agent-hero__name {
  margin-left: 12px;
}

.ai-agent-hero .ai-agent-hero__desc {
  margin-top: 24px;
  color: #333;
  font-size: 18px;
  letter-spacing: 1px;
}

.ai-agent-hero__actions {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-top: 66px;
}

.ai-agent-hero__actions .ai-btn {
  min-width: 183px;
  height: 60px;
  padding: 0 32px;
  font-size: 17px;
}

.ai-home .ai-agent-hero__actions .ai-btn--ghost {
  color: #3a3b40;
  background: #fff;
  border-color: transparent;
  box-shadow: 0 14px 30px rgba(36, 38, 45, 0.08);
}

.ai-home .ai-agent-hero__actions .ai-btn--ghost:hover {
  color: var(--ai-red);
}

/* --------------------------------------------------------------------------
   AI 实施五步法
   -------------------------------------------------------------------------- */
.ai-steps {
  padding: 58px 0 0;
}

.ai-steps .ai-sec-head h2,
.ai-kit .ai-sec-head h2 {
  font-size: 34px;
}

.ai-steps .ai-sec-head p,
.ai-kit .ai-sec-head p {
  margin-top: 12px;
  color: #7f828b;
  font-size: 15px;
}

.ai-steps__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 20px;
  padding: 0;
  list-style: none;
}

.ai-steps .ai-steps__grid {
  margin: 38px 0 0;
}

.ai-steps__grid li {
  position: relative;
  padding-top: 54px;
  border-top: 1px solid #e6e6e6;
}

.ai-steps__grid li::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 46px;
  height: 2px;
  background: var(--ai-red);
}

.ai-steps__num {
  display: block;
  padding-left: 12px;
  color: #b0b3bb;
  font-size: 20px;
  line-height: 1;
  letter-spacing: 3px;
}

.ai-steps__grid h3 {
  margin-top: 4px;
  padding-left: 12px;
  color: #333;
  font-size: 19px;
  font-weight: 500;
  line-height: 1.4;
}

.ai-steps__grid p {
  margin-top: 6px;
  padding-left: 12px;
  color: #8f9098;
  font-size: 14px;
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   九彩云 AI 智能体，开箱即用
   -------------------------------------------------------------------------- */
.ai-kit {
  padding: 56px 0 0;
}

.ai-tabs {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 36px;
  border-bottom: 1px solid #e6e6e6;
}

.ai-tab {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 12px 14px;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-align: center;
  cursor: pointer;
}

.ai-tab::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2px;
  width: 152px;
  height: 3px;
  background: transparent;
  border-radius: 2px;
  transform: translateX(-50%);
  transition: background-color 0.25s ease;
}

.ai-tab.is-active::after {
  background: var(--ai-red);
}

.ai-tab__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: #333;
}

.ai-tab__icon svg {
  display: block;
  width: 24px;
  height: 24px;
}

.ai-tab__title {
  margin-top: 8px;
  color: #333;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.3;
}

.ai-tab__desc {
  margin-top: 3px;
  color: #666;
  font-size: 14px;
  line-height: 1.5;
}

.ai-tab:hover .ai-tab__title {
  color: var(--ai-red);
}

.ai-tab-panels {
  margin-top: 40px;
}

.ai-tab-panel {
  display: none;
  align-items: center;
  min-height: 480px;
  padding-left: 48px;
  background: #f9f9fa;
  border-radius: 18px;
  overflow: hidden;
}

.ai-tab-panel.is-active {
  display: flex;
}

.ai-tab-panel__copy {
  flex: 1 1 auto;
  max-width: 560px;
  padding: 40px 40px 40px 0;
}

.ai-tab-panel__lead {
  color: #333;
  font-size: 16px;
  line-height: 1.7;
}

.ai-tab-panel ul {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.ai-tab-panel li {
  position: relative;
  padding-left: 18px;
  color: #4b4d55;
  font-size: 15px;
  line-height: 1.8;
}

.ai-tab-panel li + li {
  margin-top: 16px;
}

.ai-tab-panel li::before {
  content: "";
  position: absolute;
  top: 11px;
  left: 0;
  width: 5px;
  height: 5px;
  background: var(--ai-red);
  border-radius: 50%;
}

.ai-tab-panel li b {
  color: #333;
  font-weight: 600;
}

.ai-tab-panel__art {
  flex: 0 1 1000px;
  min-width: 0;
  width: 1000px;
  height: auto;
  margin-left: auto;
  align-self: center;
}

/* 与首页 AI 驱动流程智能升级 区块的间距对齐设计稿 */
.ai-agent-page .ai-upgrade {
  padding-top: 66px;
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1600px) {
  .ai-agent-hero h1 {
    font-size: 62px;
  }

  .ai-agent-hero__copy {
    max-width: 700px;
  }

  .ai-tab-panel__copy {
    max-width: 520px;
  }

  .ai-steps__grid h3 {
    font-size: 18px;
  }
}

@media (max-width: 1360px) {
  .ai-agent-hero h1 {
    font-size: 54px;
  }

  .ai-agent-hero__desc {
    margin-top: 24px;
  }

  .ai-agent-hero__actions {
    margin-top: 48px;
  }

  .ai-steps__grid {
    gap: 16px;
  }

  .ai-tab-panel {
    padding-left: 36px;
  }

  .ai-tab-panel__copy {
    padding-right: 28px;
  }
}

@media (max-width: 1180px) {
  .ai-agent-hero {
    position: relative;
    min-height: 0;
    padding: 56px 0;
    background-position: right bottom;
  }

  .ai-agent-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(244, 247, 252, 0.95) 0%, rgba(244, 247, 252, 0.82) 46%, rgba(244, 247, 252, 0) 78%);
    pointer-events: none;
  }

  .ai-agent-hero .ai-container {
    position: relative;
    z-index: 1;
  }

  .ai-agent-hero__copy {
    max-width: 560px;
    padding: 0;
  }

  .ai-agent-hero h1 {
    font-size: 48px;
  }

  .ai-steps__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    row-gap: 34px;
  }

  .ai-tab-panel {
    flex-direction: column;
    align-items: stretch;
    padding: 36px 36px 0;
  }

  .ai-tab-panel__copy {
    max-width: 100%;
    padding: 0;
  }

  .ai-tab-panel__art {
    width: 100%;
    flex: 0 0 auto;
    margin-top: 20px;
  }
}

@media (max-width: 1024px) {
  .ai-agent-hero {
    padding: 48px 0 52px;
  }

  .ai-agent-hero h1 {
    font-size: 42px;
  }

  .ai-steps,
  .ai-kit {
    padding-top: 48px;
  }

  .ai-steps .ai-sec-head h2,
  .ai-kit .ai-sec-head h2 {
    font-size: 32px;
  }

  .ai-steps__grid {
    margin-top: 34px;
  }
}

@media (max-width: 768px) {
  .ai-agent-hero {
    padding: 40px 0 44px;
    background-position: 78% bottom;
  }

  .ai-agent-hero::before {
    background: linear-gradient(180deg, rgba(244, 247, 252, 0.96) 0%, rgba(244, 247, 252, 0.88) 58%, rgba(244, 247, 252, 0.55) 100%);
  }

  .ai-agent-hero h1 {
    font-size: 34px;
    letter-spacing: 0;
  }

  .ai-agent-hero__desc {
    margin-top: 16px;
    font-size: 15px;
  }

  .ai-agent-hero__actions {
    gap: 14px;
    margin-top: 32px;
  }

  .ai-agent-hero__actions .ai-btn {
    min-width: 0;
    height: 52px;
    padding: 0 26px;
    font-size: 16px;
  }

  .ai-steps {
    padding-top: 40px;
  }

  .ai-steps__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 18px;
    margin-top: 28px;
  }

  .ai-steps__grid li {
    padding-top: 34px;
  }

  .ai-steps__num {
    font-size: 18px;
  }

  .ai-steps__grid h3 {
    margin-top: 12px;
    font-size: 17px;
  }

  .ai-steps__grid p {
    font-size: 13px;
  }

  .ai-kit {
    padding-top: 44px;
  }

  .ai-tabs {
    margin-top: 26px;
  }

  .ai-tab {
    padding-bottom: 14px;
  }

  .ai-tab::after {
    width: 64px;
  }

  .ai-tab__icon,
  .ai-tab__icon svg {
    width: 22px;
    height: 22px;
  }

  .ai-tab__title {
    margin-top: 6px;
    font-size: 15px;
  }

  .ai-tab__desc {
    margin-top: 2px;
    font-size: 12px;
  }

  .ai-tab-panels {
    margin-top: 24px;
  }

  .ai-tab-panel {
    min-height: 0;
    padding: 26px 22px 0;
    border-radius: 14px;
  }

  .ai-tab-panel__lead {
    font-size: 15px;
  }

  .ai-tab-panel ul {
    margin-top: 22px;
  }

  .ai-tab-panel li {
    font-size: 14px;
    line-height: 1.75;
  }

  .ai-tab-panel li + li {
    margin-top: 12px;
  }
}

@media (max-width: 480px) {
  .ai-agent-hero h1 {
    font-size: 30px;
  }

  .ai-steps .ai-sec-head h2,
  .ai-kit .ai-sec-head h2 {
    font-size: 24px;
  }

  .ai-tab {
    padding: 0 2px 12px;
  }

  .ai-tab__title {
    font-size: 13px;
    letter-spacing: 0;
    white-space: nowrap;
  }

  .ai-agent-hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .ai-steps__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .ai-tab__desc {
    display: none;
  }
}