html { background: #eef3fb; }
@font-face {
  font-family: "HeJuTi";
  src: url("/assets/fonts/heju-0.2.ttf?v=5") format("truetype");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}
/* ===== 学习笔记 · 样式（对齐鹤居浅色系） ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: linear-gradient(165deg, #eaf1fb 0%, #f2ecf5 52%, #fdeef2 100%);
  background-attachment: fixed;
  color: #46536b;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
}

/* ── 顶栏 ── */
.header {
  max-width: 1000px; margin: 0 auto; padding: 1.5rem 2rem;
  display: flex; align-items: center; gap: 12px;
}
.header h1 {
  font-size: 1.4rem; font-weight: 300; letter-spacing: 0.3rem;
  background: linear-gradient(135deg, #5b7db8, #e58fa8);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.header .back-home {
  color: #7a8aa5; font-size: 0.92rem; text-decoration: none; transition: color 0.2s;
}
.header .back-home:hover { color: #5b8fd0; }

.desc {
  text-align: center; color: #7a8aa5; font-size: 0.92rem;
  margin-bottom: 2rem; letter-spacing: 0.05rem;
}

/* ── 容器与卡片 ── */
.container { max-width: 1000px; margin: 0 auto; padding: 0 2rem 3rem; }
.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
}

.card {
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(150,170,210,0.25);
  border-radius: 14px; padding: 1.5rem;
  box-shadow: 0 2px 12px rgba(140,160,200,0.08);
  transition: all 0.3s;
  display: flex; flex-direction: column;
}
.card:hover {
  border-color: rgba(140,170,230,0.5);
  background: rgba(255,255,255,0.95);
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(140,160,200,0.18);
}
.card .icon { font-size: 1.8rem; margin-bottom: 0.6rem; }
.card h3 { font-size: 1.05rem; font-weight: 500; margin-bottom: 0.4rem; color: #5b6a85; }
.card h3 span { color: #5b8fd0; }
.card .tag {
  display: inline-block; font-size: 0.85rem;
  background: rgba(110,170,255,0.12); color: #4a8fd0;
  padding: 0.15rem 0.6rem; border-radius: 8px;
  margin-bottom: 0.6rem; width: fit-content;
}
.card p { font-size: 0.92rem; line-height: 1.6; color: #7a8aa5; margin-bottom: 0.8rem; flex: 1; }
.card .links { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.card .links a {
  font-size: 0.85rem; color: #5b8fd0; text-decoration: none;
  transition: color 0.2s;
}
.card .links a:hover { color: #2f74c0; }

/* ════ 卡片淡入（对齐微言斋 2026-08-19） ════ */
.grid .card {
  animation: fadeUp 0.4s ease backwards;
}
.grid .card:nth-child(1) { animation-delay: 0.05s; }
.grid .card:nth-child(2) { animation-delay: 0.15s; }
.grid .card:nth-child(3) { animation-delay: 0.25s; }
.grid .card:nth-child(4) { animation-delay: 0.35s; }
.grid .card:nth-child(5) { animation-delay: 0.45s; }
.grid .card:nth-child(6) { animation-delay: 0.55s; }
.grid .card:nth-child(7) { animation-delay: 0.65s; }
.grid .card:nth-child(8) { animation-delay: 0.75s; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.empty {
  text-align: center; padding: 4rem 0; color: #8a96ad;
}
.empty .icon { font-size: 2.5rem; margin-bottom: 0.5rem; }

/* ── 笔记正文页 ── */
.note-body {
  max-width: 860px; margin: 0 auto; padding: 0 2rem 3rem;
}
.note-card {
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(150,170,210,0.25);
  border-radius: 14px; padding: 2rem 2.2rem;
  box-shadow: 0 2px 12px rgba(140,160,200,0.08);
}
.note-card h2 {
  font-size: 1.2rem; font-weight: 500; color: #5b6a85;
  margin: 1.4rem 0 0.6rem; padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(150,170,210,0.2);
}
.note-card h2:first-child { margin-top: 0; }
.note-card ul { margin: 0 0 1rem 1.4rem; }
.note-card li { line-height: 1.9; font-size: 0.95rem; }
.note-card li b { color: #5b7db8; font-weight: 600; }
.note-card .cmd {
  font-family: "Consolas", "Courier New", monospace;
  background: #1f2430; color: #d7e2f5;
  border-radius: 8px; padding: 0.25rem 0.6rem;
  font-size: 0.9rem;
}
.note-card code {
  font-family: "Consolas", "Courier New", monospace;
  background: rgba(110,150,230,0.12); color: #4a6da8;
  border-radius: 4px; padding: 0.1rem 0.35rem;
  font-size: 0.88rem;
}
.note-card pre {
  background: #1f2430; color: #d7e2f5;
  border-radius: 10px; padding: 1rem 1.2rem;
  overflow-x: auto; margin: 0.6rem 0 1rem;
  font-size: 0.88rem; line-height: 1.7;
}
.note-card pre code { background: none; color: inherit; padding: 0; }
.note-card .meta {
  color: #a8b4cc; font-size: 0.85rem; margin-bottom: 0.8rem;
}
.note-card .tip {
  background: rgba(240,170,120,0.12); color: #a06a3a;
  border-left: 3px solid #e5a06a; border-radius: 6px;
  padding: 0.6rem 0.9rem; margin: 0.8rem 0; font-size: 0.9rem;
}

.footer { text-align: center; color: #a8b4cc; font-size: 0.85rem; padding: 2rem 0; }

@media (max-width: 720px) {
  .header { padding: 0.8rem; flex-wrap: wrap; gap: 0.4rem; }
  .header h1 { font-size: 1.1rem; width: 100%; text-align: center; }
  .header .back-home { font-size: 0.8rem; }
  .container { padding: 0 0.8rem 2rem; }
  .grid { grid-template-columns: 1fr; }
  .card { padding: 1rem; }
  .card h3 { font-size: 1rem; }
  .card p { font-size: 0.85rem; }
  .desc { font-size: 0.8rem; margin-bottom: 1.2rem; padding: 0 0.5rem; }
  .note-body { padding: 0 0.8rem 2rem; }
  .note-card { padding: 1.2rem 1rem; }
  .note-card h2 { font-size: 1.05rem; }
  .note-card li { font-size: 0.88rem; }
  .footer { font-size: 0.75rem; }
}