/* ==========================================================================
   小马上岸 · 官网（营销站）动效组件
   滚动入场 / 数字滚动 / 图表绘制 / 光晕呼吸
   全部动效尊重 prefers-reduced-motion（动效仅在非降级下播放）
   ========================================================================== */

/* ---------- 滚动入场 ---------- */
.reveal { opacity: 0; transform: translateY(24px); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    transition: opacity var(--dur-slow) var(--ease-standard),
                transform var(--dur-slow) var(--ease-standard);
  }
  .reveal.d1 { transition-delay: 80ms; }
  .reveal.d2 { transition-delay: 160ms; }
  .reveal.d3 { transition-delay: 240ms; }
  .reveal.d4 { transition-delay: 320ms; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 数字滚动（app.js 控制进度，此处仅样式） ---------- */
.count { display: inline-block; font-family: var(--font-num); font-variant-numeric: tabular-nums; }

/* ---------- 环形图 / 图表绘制 ---------- */
/* 只旋转 SVG，数字标签保持水平（避免 78% 被旋转成竖版） */
.chart-ring { position: relative; }
.chart-ring svg { transform: rotate(-90deg); }
.chart-ring .ring-track { stroke: var(--color-surface-3); }
.chart-ring .ring-fill { stroke: var(--color-primary); stroke-linecap: round; }
.chart-ring .ring-fill.accent { stroke: var(--color-accent); }
.chart-ring .ring-fill.secondary { stroke: var(--color-secondary); }
.chart-ring .ring-fill.ai { stroke: var(--color-ai); }

@media (prefers-reduced-motion: no-preference) {
  .chart-ring .ring-fill,
  .chart-draw {
    transition: stroke-dashoffset 1.1s var(--ease-standard) 120ms;
  }
}

/* 柱状 / 折线图（app.js 通过 stroke-dashoffset 驱动） */
.chart-draw line,
.chart-draw path {
  stroke: var(--chart-1);
  stroke-width: 3;
  stroke-linecap: round;
  fill: none;
}

/* 柱状图（官网首页 · 提分趋势） */
.bar-chart {
  display: flex;
  align-items: stretch;
  gap: 16px;
  height: 150px;
}
.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.bar-plot {
  position: relative;
  flex: 1;
}
.bar-plot .bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 0;
  background: var(--gradient-primary);
  border-radius: 8px 8px 0 0;
  transition: height var(--dur-slow) var(--ease-spring);
  transform-origin: bottom;
}
.bar-plot .bar[data-accent] {
  background: var(--gradient-accent);
}
.bar-label {
  flex: none;
  font-size: 12px;
  line-height: 1;
  color: var(--color-text-tertiary);
  text-align: center;
}

/* ---------- 光晕呼吸（Hero 背景氛围） ---------- */
.glow-pulse { animation: glow-pulse 7s ease-in-out infinite; }
@keyframes glow-pulse {
  0%, 100% { opacity: 0.75; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

/* ---------- 演示切换（AI 能力页） ---------- */
.demo-stage { position: relative; min-height: 340px; }
.demo-panel {
  position: absolute; inset: 0; opacity: 0; pointer-events: none;
  transform: translateY(16px);
  transition: opacity var(--dur-base), transform var(--dur-base);
}
.demo-panel.active { opacity: 1; pointer-events: auto; transform: none; }

/* 打字 / 步骤浮现 */
.typing-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: currentColor; animation: blink 1.4s infinite; }
.typing-dot:nth-child(2) { animation-delay: .2s; }
.typing-dot:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }