/* ============================================================
   阿星 · 总目录页样式
   纸感基调与 engnotes / risk-notes 同源，零 JS 纯静态
   ============================================================ */

:root {
  --paper: #f7f2e7;
  --paper-deep: #efe7d5;
  --ink: #2c2a26;
  --ink-soft: #6b6459;
  --line: #d8cfb8;
  --accent: #c9a86a;
}

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  background-image: linear-gradient(180deg, #faf6ec 0%, var(--paper) 320px);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- 页头 ---------- */

.site-head {
  text-align: center;
  padding: 72px 20px 34px;
}

.site-name {
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 40px;
  font-weight: 600;
  letter-spacing: 0.34em;
  text-indent: 0.34em;
  color: var(--ink);
}

.site-sub {
  margin-top: 14px;
  font-size: 13px;
  letter-spacing: 0.24em;
  text-indent: 0.24em;
  color: var(--ink-soft);
}

.site-rule {
  display: block;
  width: 46px;
  height: 2px;
  margin: 24px auto 0;
  background: var(--accent);
}

/* ---------- 系列卡片 ---------- */

.page {
  flex: 1;
  width: 100%;
}

.series {
  max-width: 640px;
  margin: 0 auto;
  padding: 34px 22px 80px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 26px 28px;
  background: #fbf7ee;
  border: 1px solid var(--line);
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 6px rgba(44, 42, 38, 0.06);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(44, 42, 38, 0.12);
}

.card-name {
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.card-note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.card-go {
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--accent);
}

/* ---------- 页脚 ---------- */

.site-foot {
  text-align: center;
  padding: 26px 20px 34px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.foot-sep { margin: 0 0.6em; }

/* ---------- 小屏适配 ---------- */

@media (max-width: 640px) {
  .site-head { padding: 52px 16px 26px; }
  .site-name { font-size: 32px; }
  .series { padding: 26px 18px 64px; }
  .card { padding: 22px 20px; }
}