/* 文件描述：ZStack Cloud 产品线共用样式（前缀 zcl-） */

body.zcl-page {
 /* padding-top: var(--nav-height);*/
  background: #fff;
  color: var(--on-surface);
}

body.zcl-page .nav:not(.is-scrolled) {
/*  background: #fff;*/
  border-bottom-color: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.zcl-container {
  width: 100%;
  overflow: hidden;
}



/* ── 按钮 ── */
.zcl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 28px;
  border-radius: var(--r8);
  font-size: var(--fs-16);
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
}

.zcl-btn:active {
  transform: scale(0.98);
}

.zcl-btn--primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.zcl-btn--primary:hover {
  background: var(--primary-dark, #004a85);
  color: #fff;
}

.zcl-btn--outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.zcl-btn--outline:hover {
  background: var(--slate-50);
}

.zcl-btn--hero {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
}

.zcl-btn--hero:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  color: var(--primary);
}

/* ── 版本导航条 ── */
.zcl-version-nav {
  position: sticky;
  top: var(--nav-height);
  z-index: 40;
  background: #fff;
  border-bottom: 1px solid var(--slate-200);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

.zcl-version-nav__inner {
  display: flex;
  align-items: stretch;
  gap: 0;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.zcl-version-nav__inner::-webkit-scrollbar {
  display: none;
}

.zcl-version-nav__item {
  flex: 0 0 auto;
  padding: 14px 18px;
  font-size: var(--fs-15);
  font-weight: 500;
  color: var(--on-surface-variant);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.zcl-version-nav__item:hover {
  color: var(--primary);
}

.zcl-version-nav__item.is-active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.zcl-version-nav__item--extra {
  margin-left: auto;
  font-size: var(--fs-14);
}

@media (max-width: 768px) {
  .zcl-version-nav__item {
    padding: 12px 14px;
    font-size: var(--fs-14);
  }

  .zcl-version-nav__item--extra {
    margin-left: 0;
  }
}

/* ── Hero ── */
.zcl-hero {
  position: relative;
  padding: clamp(72px, 10vw, 120px) var(--container-px) clamp(48px, 6vw, 72px);
  background: var(--hero-primary-gradient);
  color: var(--hero-on-primary);
}

.zcl-hero__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

@media (min-width: 900px) {
  .zcl-hero__inner--split {
    grid-template-columns: 1fr 1fr;
  }
}

.zcl-hero__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--hero-on-primary);
  margin: 0 0 16px;
}

.zcl-hero__desc {
  font-size: var(--fs-16);
  line-height: 1.75;
  opacity: 0.92;
  margin: 0 0 12px;
  max-width: 720px;
}

.zcl-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ── 特性浮窗（主站） ── */
.zcl-feature-card {
  background: #fff;
  border-radius: var(--r12);
  padding: 28px 24px;
  box-shadow: var(--shadow-md);
  color: var(--on-surface);
}

.zcl-feature-card__title {
  font-size: var(--fs-20);
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--on-surface);
}

.zcl-feature-card__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 16px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.zcl-feature-card__list li {
  font-size: var(--fs-14);
  padding-left: 14px;
  position: relative;
}

.zcl-feature-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
}

@media (max-width: 520px) {
  .zcl-feature-card__list {
    grid-template-columns: 1fr;
  }
}

/* ── 主站内版本 Tab ── */
.zcl-edition-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
  border-bottom: 1px solid var(--slate-200);
  background: var(--slate-50);
}

.zcl-edition-tabs__btn {
  flex: 1 1 auto;
  min-width: 100px;
  padding: 16px 12px;
  border: none;
  background: transparent;
  font-size: var(--fs-15);
  font-weight: 500;
  color: var(--on-surface-variant);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.zcl-edition-tabs__btn:hover {
  color: var(--primary);
}

.zcl-edition-tabs__btn.is-active {
  color: var(--primary);
  background: #fff;
  border-bottom-color: var(--primary);
}

.zcl-edition-tabs__link {
  flex: 1 1 auto;
  min-width: 100px;
  padding: 16px 12px;
  text-align: center;
  font-size: var(--fs-15);
  font-weight: 500;
  color: var(--on-surface-variant);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s;
}

.zcl-edition-tabs__link:hover {
  color: var(--primary);
}

/* ── 通用区块 ── */
.zcl-section {
  padding: clamp(48px, 6vw, 80px) var(--container-px);
}

.zcl-section--alt {
  background: var(--slate-50);
}

.zcl-section__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.zcl-section__title {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  text-align: center;
  margin: 0 0 12px;
}

.zcl-section__subtitle {
  font-size: var(--fs-16);
  color: var(--on-surface-variant);
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

/* ── 两栏图文 ── */
.zcl-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

@media (min-width: 768px) {
  .zcl-split {
    grid-template-columns: 1fr 1fr;
  }

  .zcl-split--reverse .zcl-split__media {
    order: -1;
  }
}

.zcl-split__title {
  font-size: var(--fs-22);
  font-weight: 700;
  margin: 0 0 12px;
}

.zcl-split__desc {
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--on-surface-variant);
  margin: 0;
}

.zcl-split__media img {
  width: 100%;
  height: auto;
  border-radius: var(--r12);
}

/* ── 步骤条 ── */
.zcl-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 768px) {
  .zcl-steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

.zcl-steps__item {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--r8);
  padding: 20px 16px;
  text-align: center;
  font-size: var(--fs-14);
  line-height: 1.5;
}

.zcl-steps__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: var(--fs-14);
  font-weight: 700;
  margin-bottom: 10px;
}

/* ── 卡片网格 ── */
.zcl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.zcl-grid--3 {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

@media (min-width: 960px) {
  .zcl-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.zcl-card {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--r12);
  padding: 24px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.zcl-card:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.zcl-card__title {
  font-size: var(--fs-18);
  font-weight: 700;
  margin: 0 0 10px;
}

.zcl-card__desc {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--on-surface-variant);
  margin: 0;
}

/* ── 案例轮播 ── */
.zcl-carousel {
  position: relative;
  overflow: hidden;
}

.zcl-carousel__track {
  display: flex;
  transition: transform 0.4s ease;
}

.zcl-carousel__slide {
  flex: 0 0 100%;
  padding: 0 8px;
}

.zcl-carousel__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.zcl-carousel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--slate-300);
  cursor: pointer;
  padding: 0;
}

.zcl-carousel__dot.is-active {
  background: var(--primary);
  width: 24px;
  border-radius: 4px;
}

/* ── 底部 CTA ── */
.zcl-cta {
  padding: 56px var(--container-px);
  background: var(--hero-primary-gradient);
  text-align: center;
  color: var(--hero-on-primary);
}

.zcl-cta__title {
  font-size: var(--fs-24);
  font-weight: 700;
  margin: 0 0 24px;
}

.zcl-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* ── 淡入动画 ── */
.zcl-fade {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.zcl-fade.is-visible {
  opacity: 1;
  transform: none;
}