*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#ffffff;--bg2:#f7f8fc;--ink:#0c1424;--ink2:#3a4a63;--ink3:#7a8ea8;
  --border:#e4e9f2;--border2:#d0d8ea;--grad:linear-gradient(135deg,#3b82f6 0%,#7c3aed 100%);
}
html{scroll-behavior:smooth}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--ink);overflow-x:hidden;line-height:1.6}
.guide-hero{padding:128px 52px 72px;background:var(--bg);position:relative;overflow:hidden}
.guide-hero::before{content:'';position:absolute;width:900px;height:700px;background:radial-gradient(ellipse,rgba(59,130,246,0.07) 0%,transparent 65%);top:-200px;left:-200px;pointer-events:none}
.guide-hero::after{content:'';position:absolute;width:700px;height:600px;background:radial-gradient(ellipse,rgba(124,58,237,0.06) 0%,transparent 65%);top:0;right:-150px;pointer-events:none}
.guide-hero-inner{max-width:900px;margin:0 auto;position:relative;z-index:1}
.guide-eyebrow{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(59,130,246,0.25);background:rgba(59,130,246,0.06);color:#2563eb;font-size:11.5px;font-weight:600;letter-spacing:0.07em;text-transform:uppercase;padding:5px 14px;border-radius:100px;margin-bottom:28px}
.guide-hero h1{font-family:'DM Serif Display',serif;font-size:clamp(40px,5vw,64px);font-weight:800;line-height:1.06;letter-spacing:-0.03em;color:var(--ink);margin-bottom:22px;max-width:820px}
.grad-text{background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.guide-sub{font-size:18px;color:var(--ink2);line-height:1.75;font-weight:300;max-width:760px}
.guide-wrap{background:var(--bg2);border-top:1px solid var(--border);padding:72px 52px 96px}
.guide-layout{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:260px minmax(0,1fr);gap:36px;align-items:start}
.guide-toc{position:sticky;top:88px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px}
.guide-toc-title{font-size:11px;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--ink3);margin-bottom:12px}
.guide-toc a{display:block;color:var(--ink2);text-decoration:none;font-size:13px;line-height:1.45;padding:8px 0;border-top:1px solid var(--border)}
.guide-toc a:hover{color:#2563eb}
.guide-main{background:#fff;border:1px solid var(--border);border-radius:18px;padding:42px 46px}
.guide-section{padding:0 0 38px;margin-bottom:38px;border-bottom:1px solid var(--border)}
.guide-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.guide-section h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,3vw,36px);font-weight:800;letter-spacing:-0.03em;line-height:1.15;color:var(--ink);margin-bottom:16px}
.guide-section h3{font-size:17px;font-weight:600;color:var(--ink);letter-spacing:-0.01em;margin:24px 0 8px}
.guide-section p{font-size:15px;color:var(--ink2);line-height:1.85;font-weight:300;margin-bottom:14px}
.guide-list{display:grid;gap:10px;margin:18px 0}
.guide-list li{list-style:none;position:relative;padding-left:24px;color:var(--ink2);font-size:14.5px;line-height:1.75;font-weight:300}
.guide-list li::before{content:'';position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:#3b82f6}
.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:18px}
.guide-card{background:var(--bg2);border:1px solid var(--border);border-radius:14px;padding:20px 18px}
.guide-card h3{margin:0 0 8px;font-size:15px}
.guide-card p{font-size:13.5px;line-height:1.7;margin:0}
.callout{background:linear-gradient(135deg,rgba(59,130,246,0.08),rgba(124,58,237,0.06));border:1px solid rgba(59,130,246,0.18);border-radius:16px;padding:22px 20px;margin:20px 0}
.callout p{margin:0}
.related-links{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px}
.related-links a{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:16px 14px;color:var(--ink);text-decoration:none;font-size:13.5px;font-weight:600;transition:border-color 0.2s,transform 0.2s}
.related-links a:hover{border-color:rgba(59,130,246,0.35);transform:translateY(-2px)}
.link-card{display:block;background:var(--bg2);border:1px solid var(--border);border-radius:14px;padding:20px 18px;text-decoration:none;color:inherit;transition:border-color 0.2s,box-shadow 0.2s,transform 0.2s}
.link-card:hover{border-color:rgba(59,130,246,0.35);box-shadow:0 10px 28px rgba(59,130,246,0.08);transform:translateY(-2px)}
.link-card span{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:4px}
.link-card small{display:block;font-size:12.5px;color:var(--ink3);line-height:1.5}
.guide-cta{padding:88px 52px;text-align:center;background:var(--bg)}
.guide-cta h2{font-family:'DM Serif Display',serif;font-size:clamp(30px,4vw,48px);font-weight:800;letter-spacing:-0.03em;line-height:1.1;color:var(--ink);margin-bottom:18px}
.guide-cta p{font-size:17px;color:var(--ink2);max-width:560px;margin:0 auto 34px;font-weight:300;line-height:1.75}
.guide-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-outline{background:transparent;color:var(--ink2);text-decoration:none;font-size:15px;font-weight:500;padding:13px 28px;border-radius:10px;border:1.5px solid var(--border2);display:inline-block;transition:border-color 0.2s,color 0.2s}
.btn-outline:hover{border-color:#3b82f6;color:#2563eb}
@media(max-width:900px){
  .guide-hero{padding:104px 24px 60px}
  .guide-wrap{padding:48px 24px 72px}
  .guide-layout{grid-template-columns:1fr}
  .guide-toc{position:static}
  .guide-main{padding:30px 24px}
  .guide-grid,.related-links{grid-template-columns:1fr}
  .guide-cta{padding:64px 24px}
}