/* imu-aurea (Oct 30, 2026): /aurea, /aurea/book, /aurea/course. Builds on home-v2.css (black + gold, Jost). */
.au{padding-top:0}
.au-prev{position:sticky;top:0;z-index:60;background:#2a1d05;color:var(--gold-hi);font-size:13px;letter-spacing:.08em;text-align:center;padding:8px 12px;border-bottom:1px solid var(--line2)}
.au-prev a{color:var(--ink);margin-left:10px;text-decoration:none;border-bottom:1px dotted var(--gold)}
.au-prev a[aria-current]{color:var(--gold);border-bottom-style:solid}
.au-top{border-bottom:1px solid var(--line);background:rgba(5,5,5,.85);backdrop-filter:blur(8px)}
.au-top-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.au-brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:22px}
.au-brand img{width:auto;height:40px}
.au-nav{display:flex;gap:18px;font-size:15px}
.au-nav a{color:var(--mute);text-decoration:none}.au-nav a:hover{color:var(--ink)}
.au-hero{position:relative;overflow:hidden;padding:72px 0 56px;border-bottom:1px solid var(--line)}
.au-bg{position:absolute;inset:0;background:center/cover no-repeat;opacity:.34}
.au-bg::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(5,5,5,.3),rgba(5,5,5,.94) 75%)}
.au-hero .wrap{position:relative}
.center{text-align:center}
.sig{font-size:13px;letter-spacing:.42em;color:var(--gold);margin:0 0 18px}
.au-h1{font-size:clamp(36px,6vw,72px);font-weight:200;line-height:1.08;margin:0 0 18px}
.au-h2{font-size:clamp(26px,3.6vw,40px);font-weight:200;line-height:1.15;margin:0 0 18px}
.au-words{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:8px;max-width:760px;margin:26px auto 10px;padding:0}
.au-words li{height:34px;display:flex;align-items:center;border-radius:17px}
.au-words li.on{padding:0 14px;border:1px solid var(--line2);background:rgba(231,181,58,.08);color:var(--gold-hi);font-weight:400;letter-spacing:.04em}
.au-words li.off{width:calc(var(--w)*1px);background:linear-gradient(90deg,rgba(231,181,58,.22),rgba(231,181,58,.06))}
.au-pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:760px;margin:30px auto 8px}
.au-pillar{display:block;padding:18px 8px;border-radius:16px;border:1px solid var(--line2);background:rgba(5,5,5,.6);text-decoration:none;text-align:center}
.au-pillar.open{border-color:var(--gold);box-shadow:var(--glow)}
.au-pillar b{display:block;font-weight:400;font-size:18px;letter-spacing:.08em}
.au-pillar em{display:block;font-style:normal;color:var(--mute);font-size:14px}
.au-pillar span{font-size:11px;color:var(--dim);letter-spacing:.16em;text-transform:uppercase}
.au-pillar.open span{color:var(--gold)}
.lock{display:block;margin:0 auto 8px;width:18px;height:18px;stroke:var(--gold);fill:none;stroke-width:1.5}
.au-dot{display:block;width:10px;height:10px;margin:4px auto 12px;border-radius:50%;background:var(--gold);box-shadow:0 0 12px var(--gold)}
.au-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:24px 0 10px}
.au-cta.center{justify-content:center}
.au-btn{display:inline-flex;align-items:center;gap:8px;padding:14px 22px;border-radius:99px;background:var(--gbtn);color:#140d02;font-weight:500;text-decoration:none;border:0;cursor:pointer;font-size:16px}
.au-ghost{display:inline-flex;padding:13px 20px;border-radius:99px;border:1px solid var(--line2);color:var(--ink);text-decoration:none}
.au-narrow{max-width:760px}
.au-sec{padding:56px 0 8px}
.au-read p{color:#e6dcc8;font-size:18px;line-height:1.75;margin:0 0 16px}
.au-q{margin:0 0 18px;padding:18px 22px;border-left:2px solid var(--gold);font-size:22px;font-weight:300;color:var(--gold-hi)}
.au-practice{margin:24px 0;padding:22px 24px;border:1px solid var(--line2);border-radius:var(--r);background:var(--card)}
.au-practice ol{margin:0;padding-left:20px}.au-practice li{margin:0 0 12px;color:var(--ink)}
.au-three{font-size:clamp(22px,3vw,30px);letter-spacing:.06em;color:var(--gold-hi);margin:12px 0;font-weight:300}
.au-full{font-size:clamp(22px,3vw,32px);line-height:1.4;color:var(--gold-hi);font-weight:300;padding:22px;border:1px solid var(--line2);border-radius:var(--r);background:rgba(231,181,58,.05)}
.au-locks{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0}
.au-lock{padding:20px;border:1px solid var(--line2);border-radius:var(--r);background:var(--card);text-align:center}
.au-lock b{display:block;font-weight:400;letter-spacing:.08em}.au-lock b em{font-style:normal;color:var(--mute);letter-spacing:0}
.au-lock p{color:var(--mute);font-size:15px;margin:12px 0 0;font-style:italic}
.au-unlock{margin:56px 0 30px;padding:34px 30px;border:1px solid var(--gold);border-radius:var(--r);background:linear-gradient(180deg,#14100a,#080705);box-shadow:var(--glow)}
.au-unlock .lede{margin:0 0 18px}
.au-inv{list-style:none;padding:0;margin:0 0 18px;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.au-inv li{display:flex;gap:12px;align-items:baseline;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:rgba(5,5,5,.5)}
.au-inv li.au-inv-wide{grid-column:1/-1}
.au-inv b{font-size:30px;font-weight:300;color:var(--gold);min-width:44px}
.au-inv li:first-child b{font-size:18px;letter-spacing:.08em}
.au-inv span{color:var(--ink);font-size:15px}
.au-solo{color:var(--gold-hi);font-size:17px;margin:0 0 14px}
.au-why p{color:var(--mute);margin:0}
.au-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.au-card{display:block;padding:22px;border:1px solid var(--line2);border-radius:var(--r);background:var(--card);text-decoration:none}
.au-card b{display:block;font-size:20px;font-weight:400;margin-bottom:6px}.au-card span{color:var(--mute);font-size:15px}
.au-book-head{padding:56px 0 20px}
.au-book h2{margin-top:48px}.au-book h3{font-weight:400;color:var(--gold);font-size:20px;margin:30px 0 12px}
.au-toc{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin-top:16px;font-size:14px}.au-toc a{color:var(--mute)}
.au-course{padding:40px 0}
.au-steps{display:flex;gap:8px;margin:0 0 26px;flex-wrap:wrap}
.au-steps a{min-width:40px;height:40px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;border-radius:20px;border:1px solid var(--line2);text-decoration:none;color:var(--mute)}
.au-steps a[aria-current]{background:var(--gbtn);color:#140d02;border-color:transparent}
.au-next{display:flex;justify-content:space-between;gap:10px;margin-top:28px}
.au-quiz fieldset{border:1px solid var(--line2);border-radius:16px;margin:0 0 14px;padding:16px 18px}
.au-quiz legend{padding:0 6px;color:var(--ink)}
.au-quiz label{display:block;padding:6px 0;color:var(--mute);cursor:pointer}
.au-quiz fieldset.ok{border-color:#7fdc64}.au-quiz fieldset.no{border-color:#d9785a}
.au-src{font-size:14px;color:var(--gold-hi)}
.au-score{font-size:18px;color:var(--gold-hi)}
.au-foot{padding:40px 0 60px;text-align:center;border-top:1px solid var(--line);margin-top:40px}
.au-foot a{color:var(--mute)}
@media (max-width:720px){
  .au-pillars{grid-template-columns:repeat(2,1fr)}
  .au-locks,.au-inv,.au-cards{grid-template-columns:1fr}
  .au-unlock{padding:26px 18px}
  .au-read p{font-size:17px}
  .au-nav{gap:12px;font-size:14px}
  .au-hero{padding:48px 0 40px}
}