/* 夜灯 Late Light — 手写样式，无框架 */

:root {
  --bg: #0b0e13;
  --bg-soft: #111721;
  --card: #151c27;
  --line: #222d3b;
  --text: #e8eef5;
  --muted: #8d9cad;
  --dim: #5e6d7d;
  --amber: #f0b357;
  --amber-soft: rgba(240, 179, 87, 0.12);
  --cyan: #6fd0c4;
  --radius: 14px;
  --maxw: 720px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

/* 顶部一层极淡的"灯光" */
body::before {
  content: "";
  position: fixed;
  top: -40vh; left: 50%;
  width: 120vw; height: 80vh;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(240,179,87,0.10), transparent 62%);
  pointer-events: none;
  z-index: 0;
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px;
}

/* ---------- 导航 ---------- */
header.site {
  border-bottom: 1px solid var(--line);
  background: rgba(11, 14, 19, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 62px;
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.06em;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand .lamp {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 10px 2px rgba(240,179,87,0.55);
  animation: breathe 4s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { opacity: 0.65; }
  50% { opacity: 1; }
}

.brand small { color: var(--dim); font-weight: 400; font-size: 12px; letter-spacing: 0.14em; }

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  margin-left: 18px;
  transition: color .2s;
}
nav a:hover, nav a.on { color: var(--amber); }

/* ---------- 通用 ---------- */
main { padding: 54px 0 40px; }

h1 { font-size: 26px; line-height: 1.5; margin: 0 0 6px; letter-spacing: 0.02em; }
h2 { font-size: 20px; margin: 44px 0 12px; letter-spacing: 0.02em; }
h3 { font-size: 17px; margin: 30px 0 8px; color: var(--text); }

a { color: var(--cyan); }

p { margin: 0 0 18px; }

hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }

blockquote {
  margin: 22px 0;
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--amber);
  color: var(--muted);
}

code {
  font-family: "JetBrains Mono", "Noto Sans Mono", ui-monospace, monospace;
  font-size: 0.9em;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 6px;
  color: var(--amber);
}

pre {
  background: #080b10;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  overflow-x: auto;
  margin: 0 0 22px;
}
pre code { background: none; border: 0; padding: 0; color: #cfe3ef; font-size: 14px; }

.muted { color: var(--muted); }
.dim { color: var(--dim); }
.small { font-size: 14px; }

/* ---------- 首页 ---------- */
.hero { padding: 14px 0 8px; }

.hero .tagline {
  font-size: 15px;
  color: var(--dim);
  letter-spacing: 0.18em;
  margin-bottom: 26px;
}

.today {
  background: linear-gradient(180deg, var(--amber-soft), transparent);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 40px;
}
.today .label { font-size: 12px; color: var(--amber); letter-spacing: 0.22em; margin-bottom: 6px; }
.today p { margin: 0; font-size: 18px; }

.sect-title {
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--dim);
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sect-title::after {
  content: "";
  flex: 1;
  height: 0;
  border-top: 1px solid var(--line);
}

/* 碎星 */
.star {
  padding: 12px 0 12px 18px;
  border-left: 1px solid var(--line);
  position: relative;
  margin-bottom: 4px;
}
.star::before {
  content: "";
  position: absolute;
  left: -3.5px; top: 22px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 8px 1px rgba(240,179,87,0.5);
}
.star .date { font-size: 12px; color: var(--dim); letter-spacing: 0.1em; }
.star .text { color: var(--text); }

/* 文章卡片 */
.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 14px;
  text-decoration: none;
  color: inherit;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: #33465c; transform: translateY(-2px); }
.card h3 { margin: 0 0 6px; font-size: 18px; color: var(--text); }
.card .meta { font-size: 13px; color: var(--dim); }
.card p { margin: 8px 0 0; color: var(--muted); font-size: 15px; }

/* 按钮 */
.btn {
  display: inline-block;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--amber);
  border-radius: 999px;
  padding: 9px 22px;
  font-size: 15px;
  font-family: inherit;
  cursor: pointer;
  transition: background .2s, border-color .2s;
}
.btn:hover { background: var(--amber-soft); border-color: #4a3a22; }

/* ---------- 文章页 ---------- */
article.post header { margin-bottom: 34px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
article.post .post-meta { color: var(--dim); font-size: 14px; }
article.post h1 { font-size: 27px; }

/* ---------- 树洞 ---------- */
.th-form { margin-bottom: 40px; }
.th-form textarea {
  width: 100%;
  min-height: 110px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 16px;
  line-height: 1.7;
  padding: 14px 16px;
  resize: vertical;
}
.th-form textarea:focus { outline: none; border-color: #3a5068; }
.th-form .row { display: flex; align-items: center; justify-content: space-between; margin-top: 12px; gap: 12px; }

.th-item {
  border-top: 1px solid var(--line);
  padding: 18px 0;
}
.th-item .who { font-size: 12px; color: var(--dim); letter-spacing: 0.12em; margin-bottom: 6px; }
.th-item .msg { white-space: pre-wrap; color: var(--text); }
.th-item .reply {
  margin-top: 12px;
  padding: 12px 14px;
  background: var(--bg-soft);
  border-left: 2px solid var(--cyan);
  border-radius: 0 10px 10px 0;
  color: #bcd7d3;
  font-size: 15.5px;
}
.th-item .reply .who { color: var(--cyan); }

.notice { color: var(--muted); font-size: 14px; margin-bottom: 26px; }

/* ---------- footer ---------- */
footer.site {
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 13px;
  padding: 26px 0 46px;
}
footer.site .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ---------- 手机 ---------- */
@media (max-width: 600px) {
  body { font-size: 16px; line-height: 1.8; }
  main { padding: 34px 0 30px; }
  header.site .wrap { min-height: 56px; }
  nav a { margin-left: 0; margin-right: 16px; font-size: 14.5px; }
  h1, article.post h1 { font-size: 22px; }
  .today p { font-size: 17px; }
}