/* ===== 错误页样式（403/404/500/503 共用，仅 --ep-primary/--ep-glow 各页覆盖） ===== */
:root {
  --ep-bg: #F2F6FB;
  --ep-text-dark: #112D58;
  --ep-text-body: #475569;
  --ep-text-muted: #8B9BB4;
  --ep-card-border: #E0E6ED;
  --ep-grid: rgba(17, 45, 88, 0.03);
  --ep-font-display: 'Orbitron', monospace;
  --ep-font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --ep-font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

body { background: #F2F6FB; }

.error-page {
  position: relative;
  width: 100%;
  max-width: 13rem;
  margin: 0 auto;
  min-height: calc(100vh - 0.8rem - 3.74rem);
  padding: 0.7rem 0.6rem;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--ep-bg);
  overflow: hidden;
  font-family: var(--ep-font-body);
  -webkit-font-smoothing: antialiased;
}
/* 48px 网格背景 */
.error-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ep-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--ep-grid) 1px, transparent 1px);
  background-size: 0.48rem 0.48rem;
  pointer-events: none;
  z-index: 0;
}

/* 左侧：大号数字 + 几何装饰 */
.error-visual {
  position: relative;
  flex-shrink: 0;
  width: 6rem;
  height: 5.2rem;
  z-index: 2;
}
.err-ghost {
  position: absolute;
  top: 0.5rem; left: 0.3rem;
  font-family: var(--ep-font-display);
  font-size: 1.7rem;
  font-weight: 900;
  letter-spacing: 0.06rem;
  color: var(--ep-primary);
  opacity: 0.10;
  z-index: 0;
  pointer-events: none;
}
.error-num {
  position: absolute;
  top: 0.2rem; left: 0.3rem;
  font-family: var(--ep-font-display);
  font-size: 1.7rem;
  font-weight: 900;
  letter-spacing: 0.06rem;
  color: var(--ep-primary);
  line-height: 1;
  z-index: 1;
  text-shadow:
    0 0 0.4rem var(--ep-glow),
    0 0 0.8rem var(--ep-glow),
    0 0 1.2rem var(--ep-glow);
  animation: ep-pulse 3s ease-in-out infinite;
}
@keyframes ep-pulse {
  0%, 100% { text-shadow: 0 0 0.4rem var(--ep-glow), 0 0 0.8rem var(--ep-glow); }
  50%      { text-shadow: 0 0 0.6rem var(--ep-glow), 0 0 1.2rem var(--ep-glow), 0 0 1.8rem var(--ep-glow); }
}
.error-geo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

/* 右侧：标题 + 描述卡片 + 系统日志 + 按钮 */
.error-content {
  position: relative;
  z-index: 2;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.error-title {
  font-family: var(--ep-font-body);
  font-size: 0.34rem;
  font-weight: 700;
  color: var(--ep-text-dark);
  letter-spacing: -0.005rem;
  margin-bottom: 0.24rem;
}
.error-card {
  background: #FFFFFF;
  border: 1px solid var(--ep-card-border);
  border-radius: 0.12rem;
  padding: 0.26rem 0.3rem;
  box-shadow: 0 0.04rem 0.24rem rgba(17, 45, 88, 0.06);
  max-width: 4.8rem;
  margin-bottom: 0.28rem;
}
.error-card p {
  font-size: 0.14rem;
  line-height: 1.7;
  color: var(--ep-text-body);
  margin-bottom: 0.14rem;
}
.error-card p:last-of-type { margin-bottom: 0.18rem; }
.error-log {
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 0.06rem;
  padding: 0.07rem 0.13rem;
  font-family: var(--ep-font-mono);
  font-size: 0.12rem;
}
.error-log b { color: var(--ep-primary); font-weight: 600; }
.error-log span { color: var(--ep-text-muted); }

.error-actions { display: flex; flex-wrap: wrap; }
.btn-home, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 0.44rem;
  font-family: var(--ep-font-body);
  font-size: 0.14rem;
  font-weight: 600;
  letter-spacing: 0.005rem;
  border-radius: 0.08rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s;
}
.btn-home {
  padding: 0 0.32rem;
  background: var(--ep-primary);
  color: #FFFFFF;
  border: none;
  box-shadow: 0 0.04rem 0.16rem var(--ep-glow);
}
.btn-home:hover {
  transform: translateY(-0.02rem);
  box-shadow: 0 0.08rem 0.24rem var(--ep-glow);
  filter: brightness(1.08);
}
.btn-secondary {
  padding: 0 0.28rem;
  background: transparent;
  color: var(--ep-primary);
  border: 0.015rem solid var(--ep-primary);
  margin-left: 0.15rem;
}
.btn-secondary:hover { background: var(--ep-primary); color: #FFFFFF; }

/* 窄屏：左右纵向堆叠 */
@media (max-width: 900px) {
  .error-page { flex-direction: column; gap: 0.4rem; text-align: center; padding: 0.6rem 0.3rem; }
  .error-visual { width: 100%; max-width: 5rem; height: 3.6rem; }
  .error-content { align-items: center; }
  .error-card { max-width: 100%; text-align: left; }
}