:root{
  --bg:#f5f6f8;
  --card:#ffffff;
  --line:#e6e8eb;
  --text:#232629;
  --muted:#6b7178;
  --brand:#2b7a63;
  --brand-d:#20604d;
  --link:#2563a8;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
  font-size:15px;
}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}

/* header */
header.site{background:var(--card);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;height:56px}
.logo{font-size:18px;font-weight:700;color:var(--text)}
.logo:hover{text-decoration:none}
.logo span{color:var(--brand)}
.nav{margin-left:auto;display:flex;gap:18px;font-size:14px}
.nav a{color:var(--muted)}
.nav a:hover{color:var(--brand)}
@media(max-width:820px){.nav .catlink{display:none}}

/* breadcrumb */
.crumb{font-size:13px;color:var(--muted);padding:14px 0 2px}
.crumb a{color:var(--muted)}

/* headings */
h1{font-size:23px;margin:10px 0 6px}
h2{font-size:18px;margin:26px 0 10px;padding-bottom:6px;border-bottom:1px solid var(--line)}
.lead{color:var(--muted);margin:0 0 18px}

/* tool card */
.tool{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:18px;margin:14px 0}
textarea{
  width:100%;min-height:150px;resize:vertical;
  border:1px solid var(--line);border-radius:6px;padding:10px 12px;
  font-family:"SFMono-Regular",Consolas,"Microsoft YaHei",monospace;
  font-size:14px;line-height:1.6;color:var(--text);background:#fbfcfd;
}
textarea:focus{outline:none;border-color:var(--brand)}
.io-label{font-size:13px;color:var(--muted);margin:4px 0}
.opts{display:flex;flex-wrap:wrap;gap:14px 20px;align-items:center;margin:14px 0}
.opts label{font-size:14px;display:inline-flex;align-items:center;gap:6px;cursor:pointer}
.opts input[type=text],.opts input[type=number],.opts select{
  border:1px solid var(--line);border-radius:5px;padding:5px 8px;font-size:14px
}
.opts input[type=range]{accent-color:var(--brand);vertical-align:middle;max-width:150px}
.opts b{color:var(--brand);display:inline-block;min-width:32px;text-align:right}
.btns{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0}
button{
  font-size:14px;padding:8px 18px;border-radius:6px;border:1px solid var(--brand);
  background:var(--brand);color:#fff;cursor:pointer;font-family:inherit;
}
button:hover{background:var(--brand-d);border-color:var(--brand-d)}
button.ghost{background:#fff;color:var(--text);border-color:var(--line)}
button.ghost:hover{background:#f0f2f4}
.stat{font-size:13px;color:var(--muted);margin-top:8px}
.toast{
  position:fixed;left:50%;bottom:40px;transform:translateX(-50%);
  background:#232629;color:#fff;padding:9px 18px;border-radius:6px;font-size:14px;
  opacity:0;pointer-events:none;transition:opacity .2s;z-index:50;
}
.toast.show{opacity:.94}

/* prose / SEO text */
.prose{color:#3a3f45}
.prose p{margin:10px 0}
.prose ul{margin:10px 0;padding-left:22px}
.prose li{margin:4px 0}

/* 首页 Hero 渐变横幅 */
.herowrap{background:linear-gradient(135deg,#2b7a63 0%,#238073 45%,#1f6f7a 100%);color:#fff}
.herowrap .inner{max-width:1120px;margin:0 auto;padding:40px 16px 44px}
.herowrap h1{font-size:31px;margin:0 0 10px;color:#fff;letter-spacing:.5px}
.herowrap .sub{margin:0 0 22px;color:rgba(255,255,255,.88);max-width:660px;font-size:15px}
.searchbox{display:flex;max-width:540px;background:#fff;border-radius:12px;padding:5px;box-shadow:0 10px 30px rgba(0,0,0,.14)}
.searchbox input{flex:1;border:0;outline:0;padding:11px 16px;font-size:15px;background:transparent;color:var(--text);border-radius:10px}
.searchbox .sicon{display:flex;align-items:center;padding:0 4px 0 12px;color:var(--muted);font-size:16px}
.searchcount{font-size:13px;color:rgba(255,255,255,.82);margin-top:12px}
.searchcount b{color:#fff}

/* 顶部分类导航条（吸顶胶囊） */
.topcats{background:rgba(255,255,255,.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.topcats .bar{max-width:1120px;margin:0 auto;display:flex;flex-wrap:wrap;gap:8px;padding:11px 16px}
.topcats a{font-size:13px;color:var(--muted);white-space:nowrap;padding:5px 13px;border-radius:999px;background:var(--bg);border:1px solid var(--line);transition:.12s}
.topcats a:hover{color:#fff;background:var(--brand);border-color:var(--brand);text-decoration:none}

/* 首页两栏布局 */
.home-wrap{max-width:1120px;padding-top:6px}
.layout{display:flex;gap:26px;align-items:flex-start}
.side{width:158px;flex:0 0 158px;position:sticky;top:62px;align-self:flex-start}
.side .sidetitle{font-size:12px;color:var(--muted);padding:6px 10px;letter-spacing:.5px}
.side ul{list-style:none;margin:0;padding:0}
.side li{margin:1px 0}
.side a{display:flex;align-items:center;gap:8px;padding:7px 10px;border-radius:7px;color:#3a3f45;font-size:14px}
.side a::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--ac,#2b7a63);flex:0 0 8px}
.side a:hover{background:#eef4f1;color:var(--brand);text-decoration:none}
.content{flex:1;min-width:0}

/* 分类区块 */
.cat{margin:8px 0 26px;scroll-margin-top:64px}
.cat h2{margin:14px 0 14px;font-size:18px;border:0;padding:0;display:flex;align-items:center;gap:10px}
.cat h2::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--ac,#2b7a63)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(206px,1fr));gap:13px}
.card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:14px 16px;color:var(--text);transition:transform .12s,box-shadow .12s,border-color .12s;
}
.card:hover{border-color:transparent;box-shadow:0 7px 20px rgba(30,42,54,.11);transform:translateY(-2px);text-decoration:none}
.card b{display:block;font-size:15px;margin-bottom:4px;padding-left:15px;position:relative;font-weight:600}
.card b::before{content:"";position:absolute;left:0;top:6px;width:8px;height:8px;border-radius:2px;background:var(--ac,#2b7a63)}
.card small{color:var(--muted);font-size:12.5px;line-height:1.5;display:block;padding-left:15px}
.noresult{color:var(--muted);padding:30px 4px;display:none}
/* 相关工具（内页） */
.grid.related{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:6px}
.grid.related .card{padding:11px 14px}
.grid.related .card b{margin-bottom:0;font-size:14px}

@media(max-width:760px){.side{display:none}.layout{display:block}.home-wrap{max-width:960px}}
@media(max-width:600px){.herowrap h1{font-size:24px}.herowrap .inner{padding:30px 16px 34px}}

/* 干支历年对照表 */
.gzwrap{display:flex;gap:16px;flex-wrap:wrap}
.gztbl{border-collapse:collapse;font-size:13px;flex:1;min-width:200px}
.gztbl th,.gztbl td{border:1px solid var(--line);padding:4px 8px;text-align:center;white-space:nowrap}
.gztbl thead th{background:#eef4f1;color:var(--brand);position:sticky;top:0;font-weight:600}
.gztbl tbody tr:nth-child(even){background:#fafbfc}

/* hero(工具页内小标题用) */
.hero{padding:22px 0 6px}
.hero h1{font-size:27px;margin:0 0 8px}
.hero p{color:var(--muted);margin:0;max-width:640px}

/* footer */
footer.site{border-top:1px solid var(--line);margin-top:40px;background:var(--card)}
footer.site a{color:var(--muted)}
.foot-main{max-width:1120px;margin:0 auto;padding:38px 16px 28px;display:grid;grid-template-columns:1.7fr 1.15fr 1.15fr;gap:30px 44px}
.foot-col{min-width:0}
.foot-about{max-width:440px}
.foot-logo{font-size:19px;font-weight:700;color:var(--text)}
.foot-logo span{color:var(--brand)}
.foot-about p{color:var(--muted);font-size:13px;margin:12px 0 0;line-height:1.8}
.foot-h{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;position:relative;padding-left:11px}
.foot-h::before{content:"";position:absolute;left:0;top:3px;width:4px;height:14px;border-radius:2px;background:var(--brand)}
.foot-links{display:grid;grid-template-columns:repeat(2,minmax(72px,1fr));gap:10px 20px}
.foot-links a{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.foot-links a:hover{color:var(--brand);text-decoration:none}
.foot-bar{border-top:1px solid var(--line);background:#fbfcfd}
.foot-bar .wrap{padding:16px 16px;color:var(--muted);font-size:13px;text-align:center;line-height:1.9}
.foot-bar .foot-line,.foot-bar .foot-copy{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:2px 10px}
.foot-bar .foot-copy{margin-top:8px;color:#9198a0;font-size:12.5px}
.foot-bar i{color:var(--line);font-style:normal}
.foot-bar a:hover{color:var(--brand);text-decoration:none}
@media(max-width:820px){
  .foot-main{grid-template-columns:1fr 1fr;gap:26px 40px}
  .foot-about{grid-column:1/-1;max-width:none}
}
@media(max-width:500px){
  .foot-main{grid-template-columns:1fr;gap:22px;padding:28px 16px 20px}
  .foot-links{grid-template-columns:repeat(2,1fr)}
}

@media(max-width:600px){
  .nav{gap:12px}
  .hero h1{font-size:22px}
}