/* evoflow 全流程演示内容区样式（与站点导航 .header 隔离） */
.evoflow-demo {
  --glass-bg: rgba(255, 255, 255, 0.07);
  --glass-bg-strong: rgba(18, 24, 38, 0.72);
  --glass-border: rgba(255, 255, 255, 0.16);
  --glass-blur: 28px;
  --panel-solid: #151b2b;
  --text: rgba(255, 255, 255, 0.92);
  --text-muted: rgba(255, 255, 255, 0.62);
  --accent: #60a5fa;
  --accent-soft: #1e3a5f;
  --accent-glow: rgba(96, 165, 250, 0.28);
  --line: rgba(255, 255, 255, 0.12);
  --header-line: rgba(255, 255, 255, 0.06);
  --radius: 16px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);

  /* 随英雄图等比缩放：宽 min(viewport,2200)，高约 86% 处开始，大小屏都贴近图底部 */
  --hero-display-width: min(max(100vw, 1150px), 2200px);
  --demo-offset-top: calc(var(--hero-display-width) * 2496 / 7632 * 0.91);

  position: relative;
  z-index: 1;
  align-self: start;
  margin-top: var(--demo-offset-top);
  background: transparent;
  color: var(--text);
  line-height: 1.6;
}

.evoflow-demo .page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.evoflow-demo .steps-wrap,
.evoflow-demo .video-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
}

.evoflow-demo .steps-wrap {
  border-radius: var(--radius);
  padding: 18px 24px 16px;
  margin-bottom: 20px;
}

.evoflow-demo .demo-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--header-line);
}

.evoflow-demo .demo-header h1 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.evoflow-demo .demo-header p {
  color: var(--text-muted);
  font-size: 13px;
  text-align: right;
}

.evoflow-demo .steps-track {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  isolation: isolate;
}

.evoflow-demo .steps-line {
  position: absolute;
  top: 20px;
  left: calc(100% / (var(--step-count, 7) * 2));
  right: calc(100% / (var(--step-count, 7) * 2));
  height: 2px;
  background: var(--line);
  z-index: 0;
  pointer-events: none;
}

.evoflow-demo .steps-line-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #60a5fa);
  border-radius: 2px;
  width: 0%;
  transition: width 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.evoflow-demo .step-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  position: relative;
  z-index: 1;
  -webkit-tap-highlight-color: transparent;
}

.evoflow-demo .step-dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--panel-solid);
  border: 2px solid rgba(255, 255, 255, 0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-muted);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 2;
  box-shadow: 0 0 0 4px var(--panel-solid);
}

.evoflow-demo .step-item:hover .step-dot {
  border-color: #93c5fd;
  color: var(--accent);
  transform: translateY(-2px);
}

.evoflow-demo .step-item.active .step-dot {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 4px var(--panel-solid), 0 0 0 8px var(--accent-glow);
  transform: scale(1.06);
}

.evoflow-demo .step-item.done .step-dot {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 4px var(--panel-solid);
}

.evoflow-demo .step-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  text-align: center;
  max-width: 118px;
  white-space: nowrap;
  line-height: 1.4;
  transition: color 0.3s;
  position: relative;
  z-index: 1;
  margin-top: 2px;
}

.evoflow-demo .step-item.active .step-label {
  color: var(--accent);
  font-weight: 600;
}

.evoflow-demo .video-panel {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: evoflowFadeUp 0.4s ease;
}

@keyframes evoflowFadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.evoflow-demo .video-desc {
  padding: 16px 24px 14px;
  border-bottom: 1px solid var(--line);
}

.evoflow-demo .video-desc-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}

.evoflow-demo .video-desc h2 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.evoflow-demo .video-desc p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.55;
}

.evoflow-demo .video-wrap {
  position: relative;
  background: #0f172a;
  aspect-ratio: 16 / 9;
}

.evoflow-demo .video-wrap video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.evoflow-demo .video-play-toggle {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  padding: 0;
  background: rgba(0, 0, 0, 0.22);
  cursor: pointer;
  transition: opacity 0.25s ease, visibility 0.25s ease, background 0.2s ease;
}

.evoflow-demo .video-play-toggle:hover {
  background: rgba(0, 0, 0, 0.32);
}

.evoflow-demo .video-play-toggle.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.evoflow-demo .video-play-toggle-icon {
  width: 88px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.78;
  filter: drop-shadow(0 10px 28px rgba(0, 0, 0, 0.28));
  pointer-events: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.evoflow-demo .video-play-toggle:hover .video-play-toggle-icon {
  transform: scale(1.06);
  opacity: 0.9;
}

.evoflow-demo .video-play-toggle-icon svg {
  width: 100%;
  height: 100%;
}

.evoflow-demo .video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: #94a3b8;
  font-size: 14px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}

.evoflow-demo .video-placeholder.show {
  opacity: 1;
}

.evoflow-demo .video-placeholder svg {
  width: 48px;
  height: 48px;
  opacity: 0.5;
}

.evoflow-demo .video-footer {
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.04);
  border-top: 1px solid var(--line);
}

.evoflow-demo .video-footer span {
  font-size: 13px;
  color: var(--text-muted);
}

.evoflow-demo .nav-btns {
  display: flex;
  gap: 8px;
}

.evoflow-demo .nav-btns button {
  padding: 8px 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.evoflow-demo .nav-btns button:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.evoflow-demo .nav-btns button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.evoflow-demo .nav-btns button.primary {
  background: rgba(37, 99, 235, 0.75);
  border-color: rgba(96, 165, 250, 0.6);
  color: #fff;
}

.evoflow-demo .nav-btns button.primary:hover:not(:disabled) {
  background: rgba(29, 78, 216, 0.85);
  border-color: rgba(96, 165, 250, 0.8);
  color: #fff;
}

@media (max-width: 768px) {
  .evoflow-demo .page { padding: 16px 16px 32px; }
  .evoflow-demo .demo-header { flex-direction: column; align-items: flex-start; gap: 4px; }
  .evoflow-demo .demo-header p { text-align: left; }
  .evoflow-demo .steps-wrap { padding: 14px 12px 12px; overflow-x: auto; }
  .evoflow-demo .steps-track { min-width: 720px; }
  .evoflow-demo .step-dot { width: 36px; height: 36px; font-size: 15px; }
  .evoflow-demo .steps-line { top: 18px; }
  .evoflow-demo .video-desc,
  .evoflow-demo .video-footer { padding-left: 16px; padding-right: 16px; }
}