:root{--bg:#fdf7f8;--card:#fff;--fg:#2f2b33;--muted:#7a6f78;--line:#ecdfe3;--accent:#c96b8a;--accent2:#8a6ba8}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.layout{display:flex;min-height:100vh}
.side{width:272px;flex:0 0 272px;border-right:1px solid var(--line);background:var(--card);
  position:sticky;top:0;height:100vh;overflow:auto;padding:22px 18px}
.brand{font-weight:700;font-size:17px;margin:0 0 2px}
.brand small{display:block;font-weight:400;color:var(--muted);font-size:12px;margin-top:4px}
.nav-group{margin-top:20px}
.nav-group h4{margin:0 0 8px;font-size:11px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}
.nav a{display:block;padding:6px 8px;border-radius:8px;font-size:13.5px;color:#4a444d;line-height:1.45}
.nav a:hover{background:#fbf0f3;text-decoration:none}
.nav a.on{background:#f8e6ec;color:#8f3f5c;font-weight:600}
.main{flex:1;min-width:0;padding:42px 48px 90px;max-width:980px}
.top{display:flex;gap:14px;align-items:center;justify-content:space-between;margin-bottom:10px;flex-wrap:wrap}
.crumb{font-size:13px;color:var(--muted)}
.pill{font-size:12px;background:#f6e7ec;color:#8f3f5c;padding:3px 10px;border-radius:99px}
h1{font-size:28px;line-height:1.35;margin:.4em 0 .5em;letter-spacing:-.01em}
h2{font-size:21px;margin:2em 0 .6em;padding-top:.6em;border-top:1px solid var(--line)}
h3{font-size:17px;margin:1.6em 0 .4em}
h4{font-size:15px;margin:1.3em 0 .3em}
p{margin:.55em 0}
ul,ol{margin:.5em 0 .8em;padding-left:1.5em}
li{margin:.28em 0}
table{border-collapse:collapse;width:100%;margin:1em 0;font-size:14px;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:7px 10px;text-align:left;vertical-align:top}
th{background:#fbf1f4;font-weight:600;white-space:nowrap}
tr:nth-child(even) td{background:#fffdfd}
code{background:#f6f0f2;padding:.12em .38em;border-radius:5px;font-size:.88em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
pre{background:#2b2731;color:#f4eef1;padding:14px 16px;border-radius:10px;overflow:auto;font-size:13px;line-height:1.6}
pre code{background:none;padding:0;color:inherit}
blockquote{margin:1em 0;padding:.5em 1em;border-left:3px solid var(--accent);background:#fbf1f4;color:#5a5058;border-radius:0 8px 8px 0}
hr{border:none;border-top:1px solid var(--line);margin:2em 0}
.foot{margin-top:60px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:12.5px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px;
  box-shadow:0 2px 10px rgba(120,80,95,.04);display:block;color:inherit}
.card:hover{border-color:#e2c3ce;text-decoration:none;transform:translateY(-1px)}
.card b{display:block;font-size:15px;margin-bottom:4px;color:#8f3f5c}
.card span{font-size:12.5px;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px;margin:16px 0 30px}
.hero{background:linear-gradient(135deg,#fdf0f4,#f7f0fb);border:1px solid var(--line);border-radius:18px;padding:26px 28px;margin-bottom:26px}
.hero h1{margin:.1em 0 .3em;font-size:30px}
.hero p{color:#5f5660;margin:.3em 0;font-size:14.5px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:11px 20px;border-radius:10px;font-size:14px;font-weight:600;margin-top:14px}
.btn:hover{background:#b9597a;text-decoration:none}
.note{font-size:13px;color:#8a5a68;background:#fff6f8;border:1px dashed #ecc9d4;border-radius:10px;padding:10px 14px;margin:14px 0}
@media (max-width:900px){
  .layout{display:block}.side{position:static;width:auto;height:auto;border-right:none;border-bottom:1px solid var(--line)}
  .nav{display:grid;grid-template-columns:1fr 1fr;gap:2px}.nav-group{margin-top:14px}
  .main{padding:24px 18px 70px}
  h1{font-size:24px}
}