/* ===== 华粹新学 公共样式 ===== */

/* 设计变量 */
:root {
  --paper: #f4ede0;
  --paper-light: #faf6ee;
  --paper-card: #fdfaf3;
  --ink: #2b2418;
  --ink-light: #5a4d3a;
  --ink-faint: #8a7c68;
  --accent: #b23a2e;
  --accent-light: #d45a4a;
  --gold: #b8893a;
  --border: #d8cdb8;
  --highlight: #fdf2c8;
  --highlight-strong: #f8e4a0;
  --comic-bg: #efe7d5;
  --shadow: rgba(60, 40, 20, 0.08);
  --shadow-hover: rgba(60, 40, 20, 0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* ===== 顶部导航 ===== */
.top-nav {
  background: var(--paper-light);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  height: 56px;
  gap: 2rem;
}
.logo {
  font-family: "Noto Serif SC", "Source Han Serif SC", serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.15em;
  white-space: nowrap;
  text-decoration: none;
}
.logo span {
  color: var(--ink);
  font-weight: 400;
  font-size: 0.85rem;
  margin-left: 0.5rem;
  letter-spacing: normal;
}

/* 主导航下拉菜单 */
.main-nav { display: flex; align-items: center; gap: 0.5rem; margin-left: auto; }
.nav-item { position: relative; font-size: 0.92rem; }
.nav-item > a, .nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.9rem;
  color: var(--ink-light);
  text-decoration: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  font-size: inherit;
  background: none;
  border: none;
}
.nav-item > a:hover, .nav-trigger:hover {
  color: var(--accent);
  background: rgba(178,58,46,0.05);
}
.nav-item.active > a, .nav-item.active .nav-trigger {
  color: var(--accent);
  font-weight: 600;
}
.nav-trigger .caret {
  font-size: 0.6rem;
  transition: transform 0.2s;
}
.nav-item:hover .nav-trigger .caret { transform: rotate(180deg); }
.nav-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 210px;
  background: var(--paper-light);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 28px rgba(60,40,20,0.15);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.2s ease;
  z-index: 200;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown .dd-label {
  font-size: 0.72rem;
  color: var(--ink-faint);
  letter-spacing: 0.15em;
  padding: 0.4rem 0.7rem 0.3rem;
}
.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.7rem;
  font-size: 0.88rem;
  color: var(--ink-light);
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.15s;
}
.nav-dropdown a:hover {
  background: rgba(178,58,46,0.07);
  color: var(--accent);
}
.nav-dropdown a .dd-seal {
  width: 24px; height: 24px;
  background: var(--accent); color: #fff;
  font-family: "Noto Serif SC", serif;
  font-size: 0.8rem; font-weight: 700;
  border-radius: 4px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.nav-dropdown a .dd-seal.gold { background: var(--gold); }
.nav-dropdown a .dd-seal.ink { background: var(--ink-light); }
.nav-dropdown a .dd-seal.gray { background: var(--ink-faint); }
.nav-dropdown a .dd-status {
  margin-left: auto;
  font-size: 0.72rem;
  color: #5a7a3a;
}
.nav-dropdown a .dd-status.soon { color: var(--ink-faint); }
.nav-dropdown .dd-divider {
  height: 1px;
  background: var(--border);
  margin: 0.3rem 0.4rem;
}

/* ===== 正文面包屑 ===== */
.body-breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.2rem 2rem 0;
  font-size: 0.88rem;
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
.body-breadcrumb a {
  color: var(--ink-light);
  text-decoration: none;
  transition: color 0.15s;
  display: inline-flex;
  align-items: center;
}
.body-breadcrumb a:hover { color: var(--accent); }
.body-breadcrumb .sep {
  margin: 0 0.5rem;
  color: var(--border);
  display: inline-flex;
  align-items: center;
}
.body-breadcrumb .current {
  color: var(--ink);
  display: inline-flex;
  align-items: center;
}

/* ===== 通用容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 3rem 0; }
.section + .section { border-top: 1px solid var(--border); }
.section-title {
  font-family: "Noto Serif SC", serif;
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.section-title .num {
  font-family: "Noto Serif SC", serif;
  font-size: 0.9rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  width: 28px; height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.section-sub {
  font-size: 0.92rem;
  color: var(--ink-faint);
  margin-bottom: 2rem;
  padding-left: calc(28px + 0.8rem);
}

/* ===== 页脚 ===== */
.footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--ink-faint);
  border-top: 1px solid var(--border);
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .nav-inner { gap: 0.5rem; }
  .logo { font-size: 1.05rem; }
  .logo span { display: none; }
  .main-nav { gap: 0; }
  .nav-item > a, .nav-trigger { padding: 0.5rem 0.6rem; font-size: 0.85rem; }
  .container { padding: 0 1rem; }
  .body-breadcrumb { padding: 1rem 1rem 0; }
}