/* Landing-only, isolated from the shared academy and course hero rules. */
.hero.provenance-hero { --ph-gold:#ffde59; --ph-muted:#a5b9cd; background:#07121e; text-align:left; padding:0; min-height:720px; isolation:isolate; }
.provenance-hero::before { background:linear-gradient(90deg,#07121e 0%,rgba(7,18,30,.92) 23%,transparent 65%); z-index:-1; }
.ph-atmosphere { position:absolute; inset:0; pointer-events:none; z-index:-2; background:radial-gradient(ellipse at 77% 43%,#143a534d,transparent 53%),radial-gradient(ellipse at 85% 80%,#1c446830,transparent 55%); }
.ph-atmosphere::after { content:''; position:absolute; inset:0; opacity:.16; background-image:linear-gradient(#91bed51a 1px,transparent 1px),linear-gradient(90deg,#91bed51a 1px,transparent 1px); background-size:64px 64px; mask-image:linear-gradient(90deg,transparent 30%,#000); }
.provenance-hero .container.ph-layout { max-width:1560px; width:100%; display:grid; grid-template-columns:minmax(370px,.86fr) minmax(0,1.35fr); align-items:center; gap:14px; padding:34px 58px 30px; }
.ph-copy { padding:8px 0 24px; position:relative; z-index:2; }
.provenance-hero .kick { font-size:12px; letter-spacing:3.1px; line-height:1.6; margin-bottom:26px; }
.provenance-hero h1 { font-size:clamp(38px,3.6vw,59px); line-height:1.12; letter-spacing:-2.3px; font-weight:600; max-width:560px; margin:0 0 25px; text-wrap:balance; }
.provenance-hero h1 span { color:var(--ph-gold); }
.provenance-hero .ph-copy>p { color:#b9c8d7; font-size:16px; font-weight:400; line-height:1.8; letter-spacing:-.25px; max-width:480px; margin:0 0 31px; }
.provenance-hero .btn-row { justify-content:flex-start; gap:12px; }
.provenance-hero .btn { padding:14px 22px; font-size:13px; border-radius:5px; }
.provenance-hero .btn-primary { box-shadow:0 5px 25px #1a58ff25; }
.provenance-hero .btn-outline-light { border-color:#8094ab70; }
.ph-method { display:flex; align-items:center; flex-wrap:wrap; gap:10px; margin-top:40px; font:10px var(--font-label),sans-serif; letter-spacing:1.4px; text-transform:uppercase; color:#94aabe; }
.ph-method i { display:block; width:12px; height:1px; background:#ffde5960; }
.ph-experience { position:relative; min-width:0; }



.ph-viewport { position:relative; height:520px; width:100%; cursor:grab; touch-action:pan-y; }
.ph-viewport:active { cursor:grabbing; }
.ph-viewport canvas { display:block; position:absolute; inset:0; width:100%; height:100%; visibility:hidden; }
.ph-ready .ph-viewport canvas { visibility:visible; }
.ph-booting .ph-fallback, .ph-rendered .ph-fallback { visibility:hidden; }
.ph-failed .ph-fallback { visibility:visible; }
.ph-evidence { position:absolute; z-index:2; left:50%; bottom:4px; width:calc(100% - 32px); max-width:620px; padding:16px 20px; border:1px solid #81966d60; border-radius:8px; background:#0c2827f5; box-shadow:0 12px 30px #020a1230; opacity:0; visibility:hidden; transform:translate(-50%,8px); pointer-events:none; }
.ph-evidence-message { display:block; color:#f4fff9; font:500 23px/1.3 var(--font-head),sans-serif; letter-spacing:-.5px; margin-bottom:9px; }
.ph-evidence-source { display:flex; flex-wrap:wrap; gap:4px 18px; color:#d2e7dc; font:14px/1.5 Consolas,monospace; }
.ph-evidence-limit { color:#b0c9c1; font:13px/1.5 var(--font-body),sans-serif; margin-top:5px; }
.ph-caption { display:flex; align-items:center; justify-content:space-between; gap:12px; min-height:82px; padding:2px 5px 17px; }
.ph-chapter-index { display:block; color:#ffde59; font:12px Consolas,monospace; letter-spacing:1.5px; margin-bottom:5px; }
.provenance-hero .ph-caption h2 { font:500 19px/1.3 var(--font-head),sans-serif; letter-spacing:-.5px; color:#f2f7fc; margin:0 0 5px; }
.provenance-hero .ph-caption p { font:14px/1.6 var(--font-body),sans-serif; color:#b0c4d6; letter-spacing:0; margin:0; max-width:none; }
.ph-depth { color:#7a9cb5; font:9px Consolas,monospace; letter-spacing:1.5px; padding:6px 9px; border:1px solid #799fbc30; border-radius:3px; white-space:nowrap; }
.ph-controls { display:flex; align-items:center; gap:15px; border-top:1px solid #617e9830; }
.ph-controls[hidden] { display:none; }
.ph-chapters { display:grid; grid-template-columns:.93fr .8fr 1fr .88fr 1.25fr; width:100%; gap:14px; }
.ph-chapters button { --progress:0; position:relative; border:0; background:none; color:#9cb1c5; font:12px var(--font-label),sans-serif; text-align:left; padding:17px 0 14px; cursor:pointer; white-space:nowrap; }
.ph-chapters button span { color:#6c87a0; font:9px Consolas,monospace; margin-right:5px; }
.ph-chapters button[aria-pressed="true"] { color:#ffde59; }
.ph-chapters button[aria-pressed="true"] span { color:#ffde59b0; }
.ph-chapters button i { position:absolute; top:-1px; left:0; width:100%; height:2px; background:#ffde59; transform:scaleX(var(--progress)); transform-origin:left; }
.ph-chapters button:hover { color:white; }
.ph-play { width:32px; height:32px; flex:none; display:grid; place-items:center; color:#c4d6e5; background:#182f4260; border:1px solid #688dab50; border-radius:50%; cursor:pointer; }
.ph-play svg { width:17px; height:17px; fill:none; stroke:currentColor; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round; }
.ph-play:hover { border-color:#ffde59; color:#ffde59; }
.ph-experience button:focus-visible { outline:2px solid #ffde59; outline-offset:5px; }
.ph-accessible-trace { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; }
.ph-fallback { position:absolute; inset:0; display:flex; align-items:center; justify-content:center; perspective:850px; }
.ph-fallback-phone { width:205px; height:420px; border:5px solid #63829b; border-radius:35px; background:radial-gradient(ellipse at 90% 30%,#237692,#0a2038 65%); box-shadow:18px 15px 0 #172a3e,0 0 85px #5fc6ff20; transform:rotate(-12deg) rotateY(-20deg); padding:60px 20px; color:white; text-align:center; font:38px var(--font-body),sans-serif; }
.ph-island { width:62px; height:17px; position:absolute; top:14px; left:50%; transform:translateX(-50%); background:#050c13; border-radius:15px; }
.ph-fallback-apps { display:grid; grid-template-columns:repeat(3,1fr); gap:15px; margin-top:42px; }
.ph-fallback-apps i { display:grid; place-items:center; width:36px; height:36px; background:#467f9a; border-radius:9px; font:25px sans-serif; }
.ph-fallback-record { width:235px; margin-left:-35px; transform:translateY(45px); padding:22px; background:#0a2039ed; border:1px solid #79c7df90; border-radius:9px; box-shadow:0 20px 65px #0007; }
.ph-fallback-record small { font:10px Consolas,monospace; color:#83cae1; }
.ph-fallback-record strong { display:block; font:15px var(--font-body),sans-serif; margin:18px 0; }
.ph-fallback-record code { display:block; color:#ffde59; font:12px/1.8 Consolas,monospace; }
.ph-fallback-record>span { display:block; font:8px Consolas,monospace; color:#9aafc3; margin-top:18px; letter-spacing:1px; }
.ph-experience.ph-ready .ph-fallback { display:none; }
@media(min-width:1700px) { .provenance-hero .container.ph-layout { padding-top:50px; padding-bottom:48px; } .ph-viewport { height:560px; } }
@media(max-width:1150px) { .provenance-hero .container.ph-layout { padding:28px 32px; grid-template-columns:minmax(310px,.9fr) minmax(0,1.1fr); gap:4px; } .provenance-hero h1 { font-size:43px; } .provenance-hero .kick { font-size:10px; letter-spacing:2px; } .ph-viewport { height:490px; }  .ph-chapters { gap:8px; } .ph-chapters button { font-size:11px; } .ph-chapters button span { display:none; } .ph-depth { display:none; } }
@media(max-width:800px) { .provenance-hero .container.ph-layout { grid-template-columns:1fr; padding:48px 28px 26px; gap:16px; max-width:670px; } .ph-copy { padding:0; } .provenance-hero h1 { font-size:clamp(38px,7vw,51px); max-width:580px; } .provenance-hero .ph-copy>p { max-width:560px; font-size:15px; } .provenance-hero .kick { font-size:11px; } .ph-method { margin-top:27px; } .ph-viewport { height:460px; }  .ph-chapters button { font-size:11px; } .ph-chapters button span { display:inline; }  .ph-depth { display:block; } .provenance-hero::before { background:linear-gradient(#07121e,transparent); } }
@media(max-width:440px) { .provenance-hero .container.ph-layout { padding:35px 22px 23px; } .provenance-hero h1 { font-size:38px; letter-spacing:-1.5px; } .provenance-hero .kick { font-size:9px; letter-spacing:1.8px; margin-bottom:21px; } .provenance-hero .ph-copy>p { font-size:14px; } .ph-viewport { height:385px; }   .ph-chapters { gap:8px; } .ph-chapters button { font-size:11px; } .ph-chapters button span { display:none; } .ph-controls { gap:10px; } .ph-depth { display:none; } .ph-method { gap:8px; font-size:8px; } .ph-method i { width:8px; } .ph-caption { min-height:96px; } .provenance-hero .ph-caption h2 { font-size:17px; } .provenance-hero .ph-caption p { font-size:13px; } .ph-fallback { transform:scale(.78); } }
@media(max-width:600px) { .ph-evidence { width:100%; padding:12px 14px; bottom:0; } .ph-evidence-message { font-size:20px; margin-bottom:7px; } .ph-evidence-source { font-size:13px; gap:3px 10px; } .ph-evidence-limit { font-size:12px; } }
@media(prefers-reduced-motion:reduce) { .ph-viewport { cursor:default; } }