:root{--fg:#1f2328;--muted:#59636e;--border:#d1d9e0;--link:#0969da;--green:#1f883d;--hdrbg:#24292f}
*{box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Noto Sans',Helvetica,Arial,'PingFang SC','Microsoft YaHei',sans-serif;max-width:1012px;margin:0 auto;padding:0 24px;color:var(--fg);line-height:1.6;background:#fff;font-size:15px}
header{background:var(--hdrbg);color:#fff;margin:0 -24px;padding:12px 24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
header .brand{font-weight:600;color:#fff;text-decoration:none;display:flex;align-items:center;gap:8px;font-size:15px}
header .tag{color:rgba(255,255,255,.55);font-size:12px;margin-left:10px}
.hero{background:linear-gradient(135deg,#0d1117 0%,#0b2a4a 55%,#0e4d64 100%);color:#fff;border-radius:10px;padding:30px 28px;margin:8px 0 6px}
.hero h1{color:#fff;font-size:1.7rem;margin:0 0 8px}
.hero p{color:rgba(255,255,255,.88);max-width:680px;margin:0 0 4px}
.chip{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);color:#fff;border-radius:999px;padding:2px 12px;font-size:12px;margin:8px 6px 0 0}
.badge{display:inline-block;background:#ddf4ff;color:#0969da;border-radius:999px;padding:1px 9px;font-size:11.5px;font-weight:500;margin-left:6px}
.badge-g{background:#dafbe1;color:#1a7f37}
.btn-lg{padding:9px 22px;font-size:15px}
.card{transition:border-color .15s,box-shadow .15s}.card:hover{border-color:#0969da;box-shadow:0 1px 6px rgba(9,105,218,.15)}
header nav a{margin-left:16px;color:rgba(255,255,255,.75);text-decoration:none;font-size:14px}header nav a:hover{color:#fff;text-decoration:none}
h1{font-size:1.6rem;font-weight:600}h2{font-size:1.25rem;font-weight:600;margin-top:2.2em;padding-bottom:.3em;border-bottom:1px solid var(--border)}h3{font-size:1.05rem;font-weight:600}
a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}
.tldr{background:#ddf4ff;border:1px solid rgba(84,174,255,.4);border-radius:6px;padding:12px 16px}
table{border-collapse:collapse;width:100%;font-size:14px;margin:1em 0}
th,td{border:1px solid var(--border);padding:6px 13px;text-align:right}th:first-child,td:first-child{text-align:left}th{background:#f6f8fa;font-weight:600}
.ad-slot{margin:2em 0;padding:12px;border:1px dashed var(--border);border-radius:6px;color:var(--muted);font-size:13px;text-align:center}.ad-tag{display:inline-block;background:#f6f8fa;padding:1px 8px;margin-right:8px;border-radius:3px;font-size:11px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.card{border:1px solid var(--border);border-radius:6px;padding:16px}.card h3{margin:.1em 0 .4em}.muted{color:var(--muted);font-size:13px}
.price{font-size:1.1rem;font-weight:600;color:#1a7f37;margin:.4em 0}
.btn{display:inline-block;background:var(--green);color:#fff;padding:6px 16px;border-radius:6px;text-decoration:none;font-size:14px;font-weight:500}.btn:hover{background:#1a7f37;text-decoration:none;color:#fff}
.btn-outline{display:inline-block;border:1px solid var(--border);color:var(--fg);padding:6px 16px;border-radius:6px;text-decoration:none;font-size:14px;margin-left:8px}.btn-outline:hover{text-decoration:none;background:#f6f8fa}
.dl{display:inline-block;background:var(--green);color:#fff;padding:6px 16px;border-radius:6px;text-decoration:none}
footer{margin-top:3em;padding:1.5em 0;border-top:1px solid var(--border);color:var(--muted);font-size:12px}
svg{margin:1em 0}small{color:var(--muted)}ul,ol{padding-left:1.4em}li{margin:.4em 0}