/* AI Economics Lab shared styles. Matches the homepage design system. */
:root{--navy:#0B1F44;--navy2:#07172d;--blue:#1B4DE4;--blue2:#5f87ff;--paper:#f7f8fb;--muted:#bcc7d7;--line:rgba(148,163,184,.22);--line2:#dbe1ea;--ink:#0B1F44;--max:1120px;--sans:Inter,system-ui,sans-serif;--mono:"IBM Plex Mono",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:linear-gradient(180deg,var(--navy),var(--navy2));color:#fff;font-family:var(--sans);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit}.wrap{width:min(calc(100% - 40px),var(--max));margin:auto}
:focus-visible{outline:2px solid var(--blue2);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:0;z-index:60;background:var(--blue);color:#fff;padding:10px 16px;font:700 13px var(--sans);text-decoration:none}.skip:focus{left:12px;top:12px}
header.top{position:sticky;top:0;z-index:30;background:rgba(11,31,68,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px 24px;flex-wrap:wrap;padding:10px 0}
.logo{width:245px;max-width:54vw;display:block}
.nav nav{display:flex;gap:12px 20px;flex-wrap:wrap}.nav nav a{text-decoration:none;color:var(--muted);font:500 12px var(--mono)}.nav nav a:hover{color:#fff}
.eyebrow{margin:0 0 14px;color:var(--blue2);font:600 11px var(--mono);letter-spacing:.15em;text-transform:uppercase}
h1,h2,h3{margin:0;letter-spacing:-.035em}h1{font-size:clamp(34px,4.7vw,54px);line-height:1.03}h2{font-size:clamp(25px,3.2vw,38px);line-height:1.06}h3{font-size:20px}
p{color:var(--muted);line-height:1.6}
.hero{padding:70px 0 46px}.hero p{font-size:18px;max-width:720px}
.section{padding:56px 0;border-top:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;gap:28px;align-items:end;margin-bottom:28px;flex-wrap:wrap}.section-head p{max-width:600px;margin:6px 0 0}
.sortbar{width:min(260px,100%)}.sortbar label{display:block;font:600 10px var(--mono);letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.sortbar select{width:100%;background:#07172d;color:#fff;border:1px solid var(--line);padding:11px;font-size:15px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}
.card{background:linear-gradient(150deg,rgba(20,51,99,.78),rgba(8,24,48,.92));border:1px solid var(--line);overflow:hidden;display:flex;flex-direction:column}
.thumb,.video{aspect-ratio:16/9;background:#07172d;border-bottom:1px solid var(--line);display:grid;place-items:center;color:var(--muted);overflow:hidden}
.thumb img,.video img{width:100%;height:100%;object-fit:cover}.thumb iframe,.video iframe{width:100%;height:100%;border:0}
.placeholder{padding:24px;text-align:center;font-size:14px;line-height:1.6}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1}
.episode-num{font:600 10.5px var(--mono);color:var(--blue2);letter-spacing:.11em;text-transform:uppercase}
.card h3{margin:9px 0 8px}.card p{margin:0 0 auto;font-size:14px}
.buttons{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 15px;text-decoration:none;border:1px solid transparent;font:700 12px var(--sans);cursor:pointer;transition:.15s}.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--blue);color:#fff}.btn-secondary{border-color:var(--line);background:rgba(255,255,255,.035);color:#fff}
.notice{border:1px solid var(--line);background:rgba(255,255,255,.035);padding:26px;color:var(--muted)}
footer{padding:34px 0 46px;border-top:1px solid var(--line);color:#9eacc0;font:400 11.5px var(--mono)}
footer .wrap{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
footer nav{display:flex;gap:16px;flex-wrap:wrap}footer a{text-decoration:none}footer a:hover{color:#fff}
.foot-ind{width:100%;padding-top:16px;margin-top:4px;border-top:1px solid var(--line);color:#8494ab;line-height:1.8}
.tagline{letter-spacing:.12em;text-transform:uppercase}.tagline b{color:var(--blue);font-weight:500}
@media(max-width:600px){.wrap{width:min(calc(100% - 28px),var(--max))}.logo{width:200px}.nav nav{gap:10px 14px}.nav nav a{font-size:11px}.hero{padding-top:52px}}

.analysis-preview{background:linear-gradient(145deg,rgba(27,77,228,.18),rgba(7,23,45,.94));display:flex!important;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px}.analysis-preview span{font:600 9.5px var(--mono);letter-spacing:.11em;text-transform:uppercase;color:var(--blue2)}.analysis-preview strong{font-size:58px;line-height:.95;letter-spacing:-.05em;margin:8px 0;color:#fff}.analysis-preview p{margin:0!important;color:#dbe3ef!important;font-size:14px!important}.analysis-preview small{margin-top:6px;color:#91a0b6;font:500 9.5px var(--mono)}


/* Phase 6: content -> commercial decision architecture */
.content-system{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.content-type{background:rgba(8,24,48,.92);padding:22px}.content-type span{display:block;color:var(--blue2);font:600 9.5px var(--mono);letter-spacing:.1em;text-transform:uppercase;margin-bottom:7px}.content-type h3{font-size:17px;margin-bottom:7px}.content-type p{font-size:13px;margin:0}
.content-rule{margin-top:14px;padding:13px 15px;border-left:3px solid var(--blue);background:rgba(27,77,228,.08);color:#dbe4f0;font-size:13px}.content-rule strong{color:#fff}
.episode-grid{grid-template-columns:1fr}.episode-grid .card{display:grid;grid-template-columns:minmax(280px,.72fr) minmax(0,1.28fr)}.episode-grid .thumb{height:100%;aspect-ratio:auto;border-bottom:0;border-right:1px solid var(--line);min-height:360px}
.content-badges{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:10px}.content-badge,.evidence-badge{display:inline-flex;padding:5px 8px;font:600 9px var(--mono);letter-spacing:.07em;text-transform:uppercase;border:1px solid rgba(111,146,255,.3)}.content-badge{background:rgba(27,77,228,.16);color:#a9b9ff}.evidence-badge{background:rgba(255,255,255,.035);color:#c7d1e0}
.episode-context{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:rgba(148,163,184,.18);border:1px solid rgba(148,163,184,.18);margin-top:17px}.episode-context>div{background:rgba(7,23,45,.72);padding:12px 13px}.episode-context b{display:block;color:var(--blue2);font:600 8.5px var(--mono);letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px}.episode-context span{display:block;color:#d4ddeb;font-size:12px;line-height:1.5}.episode-context .context-note{grid-column:1/-1;background:rgba(27,77,228,.07)}
.support-label{display:block;color:#8fa0b8;font:600 8.5px var(--mono);letter-spacing:.08em;text-transform:uppercase;margin:17px 0 -7px}.decision-cta{display:block;margin-top:13px;padding:12px 14px;background:var(--blue);color:#fff;text-decoration:none;font:700 11.5px var(--sans);text-align:center}.decision-cta:hover{filter:brightness(1.08)}
.decision-tools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.decision-tool{border:1px solid var(--line);background:rgba(255,255,255,.03);padding:20px}.decision-tool>span{display:block;color:var(--blue2);font:600 9px var(--mono);letter-spacing:.09em;text-transform:uppercase;margin-bottom:8px}.decision-tool h3{font-size:17px;margin-bottom:8px}.decision-tool p{font-size:12.5px;margin:0 0 12px}.decision-tool dl{margin:0;display:grid;gap:9px}.decision-tool dt{color:#fff;font-size:11.5px;font-weight:700}.decision-tool dd{margin:2px 0 0;color:var(--muted);font-size:11.5px}.decision-tool a{display:inline-block;margin-top:14px;color:#9db1ff;text-decoration:none;font:600 10.5px var(--mono)}
.commercial-bridge{margin-top:18px;border:1px solid var(--line);display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;padding:20px;background:rgba(27,77,228,.08)}.commercial-bridge h3{font-size:18px;margin:0 0 5px}.commercial-bridge p{margin:0;font-size:12.5px}.commercial-bridge .btn{white-space:nowrap}
@media(max-width:820px){.content-system,.decision-tools{grid-template-columns:1fr}.episode-grid .card{grid-template-columns:1fr}.episode-grid .thumb{min-height:250px;aspect-ratio:16/9;border-right:0;border-bottom:1px solid var(--line)}.episode-context{grid-template-columns:1fr}.episode-context .context-note{grid-column:auto}.commercial-bridge{grid-template-columns:1fr}}