:root{
  --brand:#1A1A2E;--accent:#E8C547;--accent-dim:#C9A82C;--bg:#FAFAF8;--surface:#F4F3EF;
  --card:#FFFFFF;--border:#E5E3DC;--border-strong:#D6D3C8;--text:#26262E;--text-mid:#55555F;
  --text-muted:#86868F;--green:#2E8B57;--green-bg:#EAF6EF;--red:#C0392B;--red-bg:#FBECEA;
  --blue:#2F6FB0;--blue-bg:#EAF1F9;--radius:12px;
}
@media(prefers-color-scheme:dark){:root{
  --brand:#0D0D1A;--bg:#13131F;--surface:#1A1A2C;--card:#1C1C2E;--border:rgba(255,255,255,.10);
  --border-strong:rgba(255,255,255,.20);--text:#E4E4F2;--text-mid:#9898BB;--text-muted:#6262A0;
  --green:#4DC9A0;--green-bg:rgba(77,201,160,.12);--red:#E07070;--red-bg:rgba(224,112,112,.12);
  --blue:#6AABEB;--blue-bg:rgba(106,171,235,.12);--accent:#E8C547;
}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.7;font-size:17px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
nav{background:var(--brand);height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 1.25rem;position:sticky;top:0;z-index:10}
.brand{font-size:18px;font-weight:700;color:#FAFAF8;letter-spacing:-.02em;text-decoration:none}
.brand span{color:var(--accent)}
.nav-cta{background:var(--accent);color:#1A1A2E;font-size:13px;font-weight:700;padding:7px 16px;border-radius:8px;text-decoration:none}
main{max-width:720px;margin:0 auto;padding:2rem 1.25rem 4rem}
.crumbs{font-size:13px;color:var(--text-muted);margin-bottom:1.25rem}
.crumbs a{color:var(--text-muted)}
h1{font-size:34px;line-height:1.2;letter-spacing:-.02em;margin:.2rem 0 1rem}
h2{font-size:24px;line-height:1.3;letter-spacing:-.01em;margin:2.5rem 0 .75rem}
h3{font-size:19px;margin:1.75rem 0 .5rem}
.lead{font-size:19px;color:var(--text-mid);margin-bottom:1.5rem}
.meta{font-size:13px;color:var(--text-muted);margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}
ol,ul{padding-left:1.4rem}
li{margin-bottom:.5rem}
.example{background:var(--card);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;padding:1rem 1.25rem;margin:1.25rem 0;font-family:Georgia,"Times New Roman",serif;font-size:16px;line-height:1.8}
.example .lbl{display:block;font-family:-apple-system,sans-serif;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:.5rem}
.box{border-radius:var(--radius);padding:1rem 1.25rem;margin:1.25rem 0;font-size:15px}
.box-green{background:var(--green-bg);border:1px solid var(--green)}
.box-red{background:var(--red-bg);border:1px solid var(--red)}
.box-blue{background:var(--blue-bg);border:1px solid var(--blue)}
.steps{counter-reset:s;list-style:none;padding-left:0}
.steps li{counter-increment:s;position:relative;padding-left:3rem;margin-bottom:1rem}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:2rem;height:2rem;background:var(--brand);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
@media(prefers-color-scheme:dark){.steps li::before{background:var(--accent);color:#1A1A2E}}
.cta{background:var(--brand);border-radius:var(--radius);padding:1.5rem;margin:2.5rem 0;text-align:center}
.cta p{color:#E4E4F2;margin:0 0 1rem;font-size:16px}
.cta a{display:inline-block;background:var(--accent);color:#1A1A2E;font-weight:700;padding:11px 24px;border-radius:8px;text-decoration:none}
.related{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--border)}
.related h2{font-size:16px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-top:0}
.related ul{list-style:none;padding:0}
.related li{margin-bottom:.4rem}
footer{border-top:1px solid var(--border);padding:2rem 1.25rem;text-align:center;font-size:13px;color:var(--text-muted)}
.guide-list{list-style:none;padding:0}
.guide-list li{margin-bottom:1rem}
.guide-list a{display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.35rem;text-decoration:none;color:var(--text)}
.guide-list a:hover{border-color:var(--border-strong)}
.guide-list .t{font-weight:700;font-size:17px;color:var(--text);display:block;margin-bottom:.2rem}
.guide-list .d{font-size:14px;color:var(--text-muted)}