:root {
  --bg: #f1f4f5;
  --panel: #ffffff;
  --ink: #1b2326;
  --ink2: #55666d;
  --ink3: #8b989e;
  --brand: #16485a;
  --brand-2: #2c6b80;
  --accent: #a9553d;
  --line: #dce4e6;
  --line-soft: #e9eff0;
  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 26px; }
.narrow { max-width: 780px; }

/* 顶部 */
.hd {
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 30;
  backdrop-filter: blur(8px);
}
.hd .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 11px; font-size: 19px; letter-spacing: 0.14em; }
.logo .mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; background: var(--brand); color: #fff;
  font-size: 17px; letter-spacing: 0; border-radius: 2px;
}
.logo small { display: block; font-size: 10px; color: var(--ink3); letter-spacing: 0.18em; line-height: 1.4; font-family: var(--sans); }
.nav { display: flex; gap: 24px; font-size: 15px; letter-spacing: 0.1em; color: var(--ink2); }
.nav a.on { color: var(--brand); border-bottom: 2px solid var(--brand); padding-bottom: 3px; }

/* 首页 hero */
.hero { padding: 66px 0 46px; text-align: center; }
.hero h1 { font-size: 40px; font-weight: 400; letter-spacing: 0.22em; text-indent: 0.22em; }
.hero p { color: var(--ink2); font-size: 15px; margin-top: 14px; letter-spacing: 0.05em; }
.jump { display: flex; max-width: 520px; margin: 30px auto 0; background: var(--panel); border: 1px solid var(--line); }
.jump input {
  flex: 1; border: 0; outline: none; background: transparent;
  font-family: var(--serif); font-size: 18px; padding: 13px 16px; color: var(--ink);
  letter-spacing: 0.1em;
}
.jump input::placeholder { color: var(--ink3); font-size: 14px; letter-spacing: 0.04em; }
.jump button {
  border: 0; background: var(--brand); color: #fff; font-family: var(--sans);
  font-size: 14px; padding: 0 26px; cursor: pointer; letter-spacing: 0.1em;
}
.jump button:hover { background: var(--brand-2); }
.jump-tip { font-size: 12px; color: var(--ink3); margin-top: 10px; font-family: var(--sans); }

/* 工具卡片 */
.tools { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 44px 0 12px; }
.tool {
  background: var(--panel); border: 1px solid var(--line); padding: 26px 24px 22px;
  transition: border-color .18s, transform .18s;
}
.tool:hover { border-color: var(--brand-2); transform: translateY(-2px); }
.tool .k { font-size: 12px; color: var(--accent); letter-spacing: 0.2em; font-family: var(--sans); }
.tool h2 { font-size: 23px; font-weight: 400; letter-spacing: 0.16em; margin: 8px 0 10px; }
.tool p { font-size: 13.5px; color: var(--ink2); line-height: 1.8; }
.tool .more { display: block; margin-top: 14px; font-size: 12.5px; color: var(--brand-2); font-family: var(--sans); letter-spacing: 0.06em; }

/* 区块 */
.sec { padding: 34px 0; border-top: 1px solid var(--line); }
.sec-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 20px; }
.sec-title { font-size: 15px; font-weight: 400; color: var(--brand); letter-spacing: 0.28em; padding-left: 12px; border-left: 3px solid var(--brand); line-height: 1.2; }
.sec-more { font-size: 12.5px; color: var(--ink3); font-family: var(--sans); }

/* 令字云 */
.chars { display: flex; flex-wrap: wrap; gap: 8px; }
.chars a {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 42px; height: 42px; padding: 0 10px;
  background: var(--panel); border: 1px solid var(--line);
  font-size: 19px; letter-spacing: 0; transition: all .15s;
}
.chars a:hover { background: var(--brand); border-color: var(--brand); color: #fff; }
.chars a.hot { border-color: var(--brand-2); color: var(--brand); }

/* 拼音分组 */
.alpha-group { display: grid; grid-template-columns: 54px 1fr; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line-soft); align-items: start; }
.alpha-key { font-family: var(--sans); font-size: 15px; color: var(--accent); letter-spacing: 0.1em; padding-top: 9px; }
.alpha-body { display: flex; flex-wrap: wrap; gap: 8px; }
.alpha-body a { min-width: 42px; height: 38px; display: inline-flex; align-items: center; justify-content: center; padding: 0 9px; background: var(--panel); border: 1px solid var(--line); font-size: 18px; }
.alpha-body a:hover { background: var(--brand); color: #fff; border-color: var(--brand); }
.alpha-body a em { font-style: normal; font-size: 10px; color: var(--ink3); margin-left: 4px; font-family: var(--sans); }

/* 文章头 */
.page-head { padding: 40px 0 24px; border-bottom: 1px solid var(--line); }
.crumb { font-size: 12.5px; color: var(--ink3); font-family: var(--sans); letter-spacing: 0.03em; }
.crumb a { color: var(--ink2); }
.crumb span { margin: 0 6px; }
h1.title { font-size: 32px; font-weight: 400; letter-spacing: 0.16em; margin: 14px 0 10px; }
h1.title b { font-weight: 400; color: var(--accent); letter-spacing: 0.04em; }
.lead { font-size: 14.5px; color: var(--ink2); line-height: 1.95; max-width: 760px; overflow-wrap: anywhere; }
.stat { display: flex; flex-wrap: wrap; gap: 6px 26px; margin-top: 16px; font-family: var(--sans); font-size: 12px; color: var(--ink3); }
.stat b { font-weight: 600; color: var(--brand); font-size: 15px; margin-right: 3px; }

.chip-row { display: flex; flex-wrap: wrap; gap: 7px; margin: 18px 0 0; }
.chip {
  font-size: 13px; padding: 4px 12px; border: 1px solid var(--line);
  color: var(--ink2); background: var(--panel); letter-spacing: 0.04em; font-family: var(--serif);
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.on { background: var(--brand); border-color: var(--brand); color: #fff; }

/* 诗句列表 */
.dyn-block { padding: 26px 0 6px; }
.dyn-head { font-size: 14px; color: var(--brand); letter-spacing: 0.22em; margin-bottom: 16px; padding-left: 10px; border-left: 2px solid var(--brand); }
.author-block { margin-bottom: 26px; }
.author-name { font-size: 15px; letter-spacing: 0.1em; color: var(--ink2); margin-bottom: 8px; }
.author-name a { color: var(--brand-2); }
.author-name span { font-size: 12px; color: var(--ink3); margin-left: 8px; font-family: var(--sans); }
.line {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  padding: 9px 0; border-bottom: 1px dashed var(--line-soft);
}
.line:last-child { border-bottom: none; }
.line .txt { flex: 1 1 auto; min-width: 0; font-size: 18px; letter-spacing: 0.08em; line-height: 1.8; overflow-wrap: anywhere; }
.line .src { font-size: 12px; color: var(--ink3); white-space: normal; max-width: 48%; text-align: right; font-family: var(--sans); overflow-wrap: anywhere; }
.line .src a { color: var(--ink3); }
.line .src a:hover { color: var(--accent); }
.line .hl { color: #9a3b2c; background: rgba(169,85,61,.10); padding: 0 1px; border-radius: 2px; }

/* 名句（按诗分组） */
.poem-g { background: var(--panel); border: 1px solid var(--line); padding: 22px 24px 18px; margin-bottom: 14px; }
.poem-g h3 { font-size: 18px; font-weight: 400; letter-spacing: 0.1em; margin-bottom: 4px; }
.poem-g .meta { font-size: 12px; color: var(--ink3); font-family: var(--sans); margin-bottom: 12px; }
.poem-g .meta a { color: var(--brand-2); }
.poem-g p { font-size: 17px; line-height: 2.1; letter-spacing: 0.06em; }
.poem-g .go { display: inline-block; margin-top: 10px; font-size: 12.5px; color: var(--accent); font-family: var(--sans); }

/* 韵典 */
.yun-chars { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 8px; }
.yun-chars span {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; background: var(--panel); border: 1px solid var(--line);
  font-size: 19px;
}
.yun-chars span:hover { border-color: var(--brand-2); color: var(--brand); }
.yun-note { font-size: 12.5px; color: var(--ink3); font-family: var(--sans); margin-top: 10px; }

/* 互链区 */
.xlink { background: var(--panel); border: 1px solid var(--line); padding: 24px 26px; margin: 34px 0 10px; }
.xlink h2 { font-size: 14px; font-weight: 400; color: var(--brand); letter-spacing: 0.22em; margin-bottom: 12px; }
.xlink p { font-size: 13.5px; color: var(--ink2); line-height: 1.9; margin-bottom: 8px; }
.xlink a { color: var(--brand-2); border-bottom: 1px solid var(--line); }
.xlink a:hover { color: var(--accent); border-color: var(--accent); }

/* 页脚 */
.ft { border-top: 1px solid var(--line); margin-top: 40px; padding: 34px 0 46px; text-align: center; }
.ft p { font-size: 12.5px; color: var(--ink2); letter-spacing: 0.05em; margin-bottom: 5px; }
.ft .dim { color: var(--ink3); font-size: 11.5px; font-family: var(--sans); }
.ft a { color: var(--ink2); }

@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .nav { gap: 12px; font-size: 13px; letter-spacing: 0.04em; }
  .logo { gap: 8px; font-size: 16px; }
  .logo .mark { width: 28px; height: 28px; font-size: 15px; }
  .logo small { display: none; }
  .hd .wrap { height: 56px; }
  .stat { gap: 4px 16px; font-size: 11.5px; }
  .stat b { font-size: 14px; }
  .line { flex-direction: column; align-items: flex-start; gap: 1px; padding: 8px 0; }
  .line .src { align-self: flex-end; white-space: normal; font-size: 10.5px; max-width: 100%; }
  .line .txt { font-size: 16px; }
  .hero { padding: 42px 0 30px; }
  .hero h1 { font-size: 27px; letter-spacing: 0.14em; }
  .hero p { font-size: 13.5px; }
  .tools { grid-template-columns: 1fr; gap: 10px; margin-top: 30px; }
  .tool { padding: 20px 18px; }
  .tool h2 { font-size: 20px; }
  h1.title { font-size: 24px; }
  .alpha-group { grid-template-columns: 38px 1fr; gap: 8px; }
  .poem-g { padding: 18px 16px 14px; }
  .poem-g p { font-size: 15.5px; }
  .chars a { min-width: 38px; height: 38px; font-size: 17px; }
}