User:弃权者/首页/styles.css：修订间差异

#gf-homepage {
  width: 100%;
  margin: 0 auto;
  margin-top: -1rem;
}

/* ── 头图容器 ── */
#gf-hero-wrap {
  position: relative;
  width: 100%;
  height: 400px;
  overflow: hidden;
}

/* ── slide层 ── */
.gf-hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.7s ease;
}

.gf-hero-slide.active {
  opacity: 1;
}

/* ── 模糊背景层（仅超过1200px时显示） ── */
.gf-hero-bg {
  display: none;
}

/* ── 清晰前景层 ── */
.gf-hero-fg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  /* Ken Burns：缓慢放大 */
  transform: scale( 1.06 );
  transition: transform 8s ease-out, opacity 0.7s ease;
}

.gf-hero-slide.active .gf-hero-fg {
  transform: scale( 1 );
}

@media ( min-width: 1201px ) {
  .gf-hero-bg {
    display: block;
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center top;
    filter: blur( 18px );
    transform: scale( 1.08 );
  }

  .gf-hero-fg {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1200px;
    transform: translateX( -50% ) scale( 1.06 );
    background-size: cover;
    background-position: center top;
    background-repeat: no-repeat;
    transition: transform 8s ease-out, opacity 0.7s ease;
  }

  .gf-hero-slide.active .gf-hero-fg {
    transform: translateX( -50% ) scale( 1 );
  }
}

/* ── 底部渐变遮罩 ── */
#gf-hero-fade-bottom {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 120px;
  pointer-events: none;
  z-index: 8;
}

/* ── 导航外层（定位到Banner底部） ── */
#gf-switcher-wrap {
  position: absolute;
  bottom: 16px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  z-index: 20;
}

/* ── Segmented Control整体 ── */
#gf-switcher {
  position: relative;
  display: inline-flex;
  padding: 4px;
  background: rgba( 20, 22, 26, 0.82 );
  border-radius: 14px;
  border: 1px solid rgba( 255, 255, 255, 0.08 );
}

/* ── 滑动指示器 ── */
#gf-tab-indicator {
  position: absolute;
  top: 4px;
  left: 4px;
  height: calc( 100% - 8px );
  background: #3d78c4;
  border-radius: 10px;
  transition: transform 0.3s cubic-bezier( 0.4, 0, 0.2, 1 ),
              width 0.3s cubic-bezier( 0.4, 0, 0.2, 1 );
  z-index: 0;
  pointer-events: none;
}

/* ── 单个tab ── */
.gf-tab {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 0.4rem 1.2rem;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 10px;
  border: none;
  background: transparent;
  color: rgba( 255, 255, 255, 0.6 );
  transition: color 0.25s;
  outline: none;
  user-select: none;
  white-space: nowrap;
}

.gf-tab:hover {
  color: rgba( 255, 255, 255, 0.9 );
}

.gf-tab.active {
  color: #fff;
  font-weight: 500;
}

.gf-tab:focus {
  box-shadow: 0 0 0 2px rgba( 61, 120, 196, 0.5 );
}

/* ── 内容区 ── */
#gf-content-wrap {
  position: relative;
  min-height: 200px;
}

.gf-content-panel {
  display: none;
  animation: gfFadeIn 0.35s ease;
}

.gf-content-panel.active {
  display: block;
}

@keyframes gfFadeIn {
  from {
    opacity: 0;
    transform: translateY( 10px );
  }
  to {
    opacity: 1;
    transform: translateY( 0 );
  }
}

@media ( max-width: 720px ) {
  #gf-hero-wrap {
    height: 240px;
  }

  .gf-tab {
    font-size: 0.78rem;
    padding: 0.35rem 0.7rem;
  }
}