:root{
  --brand:#e8590c;--brand-dark:#d9480f;--brand-soft:#fff4e6;
  --ink:#26221e;--muted:#8a8178;--line:#f3e6d8;--bg:#fffdfb;
  --radius:14px;--shadow:0 2px 10px rgba(120,72,20,.08);--shadow-hover:0 10px 30px rgba(120,72,20,.16);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dark)}
.wrap{max-width:1000px;margin:0 auto;padding:0 20px}

.nav{position:sticky;top:0;z-index:100;background:rgba(255,253,251,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1100px;margin:0 auto;padding:0 20px;height:60px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--ink)}
.nav-logo img{height:34px;width:auto}
.nav-logo .dot{color:var(--brand)}
.nav-links{display:flex;gap:6px;list-style:none;align-items:center}
.nav-links a{display:block;padding:8px 16px;border-radius:8px;color:var(--ink);font-size:15px;font-weight:500}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand)}
.nav-links a.hl{background:var(--brand);color:#fff}
.nav-links a.hl:hover{background:var(--brand-dark)}
.nav-toggle{display:none;background:none;border:0;font-size:24px;cursor:pointer;color:var(--ink)}

.page-head{background:linear-gradient(160deg,#fff7ec,#ffe3c2);padding:52px 0 44px;text-align:center}
.page-head h1{font-size:34px;font-weight:900}
.page-head p{color:#6b5f52;margin-top:10px}

.cat-section{padding:48px 0 8px}
.cat-head{display:flex;align-items:center;gap:14px;margin-bottom:20px;padding-bottom:14px;border-bottom:2px solid var(--line)}
.cat-head .ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:21px}
.cat-head h2{font-size:22px;font-weight:800}
.cat-head small{display:block;color:var(--muted);font-weight:400;font-size:13px}

.note-list{list-style:none;margin-bottom:20px}
.note-list li{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:12px;box-shadow:var(--shadow);transition:all .25s}
.note-list li:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.note-list .tag{flex:0 0 auto;font-size:12px;font-weight:700;background:var(--brand-soft);color:#8a5a2b;padding:3px 10px;border-radius:999px}
.note-list a{flex:1;font-weight:600;color:var(--ink);font-size:15.5px}
.note-list a:hover{color:var(--brand)}
.note-list time{flex:0 0 auto;color:var(--muted);font-size:13px}
.empty-note{color:var(--muted);font-size:14px;padding:14px 6px}

footer{background:#241f1a;color:#b9aea1;padding:30px 0;font-size:13.5px;text-align:center;margin-top:60px}
footer a{color:#e8a87c}

.to-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;border:0;font-size:20px;cursor:pointer;box-shadow:0 6px 18px rgba(232,89,12,.4);opacity:0;pointer-events:none;transition:opacity .3s;z-index:99}
.to-top.show{opacity:1;pointer-events:auto}

@media (max-width:900px){
  .nav-links{display:none;position:absolute;top:60px;left:0;right:0;background:#fff;flex-direction:column;padding:12px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-hover)}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .note-list li{flex-wrap:wrap}
}