:root{--bg:#f5f6fa;--card:#fff;--ink:#1f2735;--muted:#7a8394;--line:#e6e9f0;--brand:#6a5af9;--brand2:#a44bff}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.container{max-width:960px;margin:0 auto;padding:0 20px}

/* home hero */
.hero{text-align:center;padding:40px 20px 26px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2))}
.hero h1{font-size:clamp(26px,5vw,42px);font-weight:800;letter-spacing:2px}
.hero p{margin:10px auto 0;max-width:480px;font-size:14.5px;color:rgba(255,255,255,.9)}

/* detail topbar */
.topbar{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
.topbar .container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:14px 20px}
.brand{font-weight:800;font-size:18px;color:#fff;letter-spacing:1px}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.9)}
.breadcrumb a{color:#fff}
.breadcrumb a:hover{text-decoration:underline}

main{padding:26px 0 46px}
.home-note{font-size:13px;color:var(--muted);margin-bottom:18px}

/* cards */
.card-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;display:flex;flex-direction:column;gap:10px;transition:border-color .15s ease,box-shadow .15s ease}
.card:hover{border-color:var(--brand);box-shadow:0 12px 26px rgba(106,90,249,.12)}
.top{display:flex;align-items:center;gap:11px}
.mark{width:44px;height:44px;border-radius:12px;color:#fff;flex-shrink:0;display:grid;place-items:center;font-size:19px;font-weight:800}
.name{font-size:16px;font-weight:700}
.name span{display:block;font-size:11px;color:var(--muted);font-weight:500}
.desc{font-size:13px;color:var(--muted);flex:1}
.goto{font-size:13px;font-weight:700;color:var(--brand)}

/* detail content */
.crumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--brand);font-weight:600}
.crumb a:hover{text-decoration:underline}
article h1{font-size:clamp(26px,4vw,38px);font-weight:800;line-height:1.2}
.lead{font-size:16px;color:var(--muted);margin:12px 0 22px}
article h2{font-size:21px;font-weight:800;margin:28px 0 10px;padding-left:12px;border-left:4px solid var(--brand)}
article p{margin:0 0 12px}
article ul{margin:0 0 14px;padding-left:22px}
article li{margin-bottom:6px}
.quick{background:#fbfbfe;border:1px solid var(--line);border-radius:12px;padding:16px;margin:18px 0}
.quick h3{font-size:15px;margin-bottom:8px;color:var(--brand)}
.quick ul{padding-left:18px;margin:0}
.cta{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:700;font-size:15px;padding:13px 26px;border-radius:999px;margin:8px 0 26px}
.cta:hover{filter:brightness(1.06)}

/* related */
.related{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));margin-top:6px}
.related a{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;gap:10px;align-items:center;transition:border-color .15s ease}
.related a:hover{border-color:var(--brand)}
.related .mark{width:36px;height:36px;font-size:15px;border-radius:10px}
.related b{font-size:14px}
.related span{display:block;font-size:11.5px;color:var(--muted)}

footer{text-align:center;color:var(--muted);font-size:12px;padding:20px 20px 30px}
@media(max-width:520px){.card-grid{grid-template-columns:1fr}.related{grid-template-columns:1fr}}