/* ============================================================
   红色征程 · 精神页样式 spirit.css
   ============================================================ */

/* ---------- 时期切换 ---------- */
.spirit-tab-wrap { padding: 34px 0 0; }
.spirit-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.sp-tab {
  padding: 14px 10px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font-size: 15px;
  letter-spacing: 1px;
  line-height: 1.5;
  box-shadow: var(--shadow);
  transition: all .3s;
}
.sp-tab small {
  display: block;
  font-size: 11px;
  color: var(--ink-light);
  letter-spacing: 1px;
  margin-top: 2px;
}
.sp-tab:hover { border-color: var(--gold); color: var(--red); }
.sp-tab.active {
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  border-color: transparent;
  color: #fff;
}
.sp-tab.active small { color: var(--gold-light); }

/* ---------- 手风琴 ---------- */
.spirit-section { padding-top: 40px; }
.spirit-accordion { max-width: 900px; margin: 0 auto; }
.sp-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow .3s;
}
.sp-item:hover { box-shadow: var(--shadow-lg); }
.sp-head {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 18px 24px;
  text-align: left;
  transition: background .3s;
}
.sp-head:hover { background: var(--paper-2); }
.sp-icon {
  flex: none;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 42px;
  text-align: center;
}
.sp-head h3 {
  flex: 1;
  font-family: var(--serif);
  font-size: 21px;
  color: var(--red-dark);
  letter-spacing: 2px;
}
.sp-arrow {
  flex: none;
  font-size: 18px;
  color: var(--gold);
  transition: transform .4s;
}
.sp-item.open .sp-arrow { transform: rotate(90deg); }

.sp-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .5s ease;
}
.sp-item.open .sp-body { max-height: 420px; }
.sp-body-inner {
  padding: 4px 24px 22px 82px;
}
.sp-keys {
  font-size: 13px;
  color: var(--red);
  letter-spacing: 1px;
  background: rgba(199, 0, 11, .07);
  border-left: 3px solid var(--gold);
  padding: 10px 16px;
  border-radius: 0 8px 8px 0;
  margin-bottom: 12px;
  line-height: 1.8;
}
.sp-desc {
  font-size: 14px;
  color: var(--ink);
  line-height: 2;
}

/* ---------- 结语 ---------- */
.spirit-end {
  padding: 52px 0;
  text-align: center;
  color: #fff;
  background:
    linear-gradient(120deg, rgba(109, 0, 5, .93), rgba(154, 0, 8, .86)),
    url("../images/gallery/star.jpg") center/cover no-repeat fixed;
}
.spirit-end blockquote {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 2px;
  line-height: 2;
  color: var(--gold-light);
  margin-bottom: 10px;
}
.spirit-end p {
  font-size: 14px;
  color: rgba(255, 255, 255, .85);
  letter-spacing: 3px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .spirit-tabs { grid-template-columns: repeat(2, 1fr); }
  .sp-body-inner { padding-left: 24px; }
  .sp-head h3 { font-size: 18px; }
}
@media (max-width: 480px) {
  .spirit-tabs { grid-template-columns: 1fr; }
}