/* ==========================================================================
   Episode 001 — The 8X Engineer
   Section styles layered on /home.css
   ========================================================================== */

/* Local fallbacks so this sheet still renders if a token is ever renamed. */
.episode-hero,
.video-section,
.calculator-section,
.section,
.acceptance,
.path-section{
  --c-navy:var(--navy,#0B1D2D);
  --c-gold:var(--gold,#B08D3C);
  --c-gold-dark:var(--gold-dark,#876E37);
  --c-slate:var(--slate,#57626E);
  --c-faint:var(--faint,#8B959E);
  --c-line:var(--line,#E6E3DA);
  --c-line2:var(--line2,#D5D1C4);
  --c-warm:var(--warm,#FBFBF8);
}

/* ---------------------------------------------------------------- hero -- */
.episode-hero{padding:72px 0 58px}
.episode-hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(340px,.72fr);gap:54px;align-items:center}
.episode-hero h1{max-width:820px}
.episode-kicker{margin-top:18px;font-size:14px;line-height:1.65;color:#AFC0CF;max-width:760px}
.episode-kicker strong{color:#fff}
.episode-hero-card{background:#fff;color:var(--ink);border-top:4px solid var(--gold);padding:26px 28px;box-shadow:0 22px 48px rgba(0,0,0,.24)}
.episode-hero-card span{font-size:9.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-dark)}
.episode-hero-card b{display:block;font-family:var(--serif);font-size:52px;line-height:1;color:var(--navy);margin:8px 0 10px;font-variant-numeric:tabular-nums}
.episode-hero-card p{margin:0;color:var(--slate);font-size:13px;line-height:1.6}
.episode-hero-card small{display:block;margin-top:13px;padding-top:12px;border-top:1px solid var(--line);font-size:10.5px;color:var(--faint);line-height:1.55}
.episode-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}

/* --------------------------------------------------------------- video -- */
.video-section{background:#071827;color:#fff}
.video-section .section-head h2{color:#fff}
.video-section .section-head .lede{color:#B8C6D3}
.video-shell{max-width:1050px;margin:0 auto;border:1px solid #2C465E;background:#03101C;box-shadow:0 24px 55px rgba(0,0,0,.28)}
.video-frame{aspect-ratio:16/9;position:relative;background:linear-gradient(145deg,#0D2840,#051522);display:flex;align-items:center;justify-content:center;overflow:hidden}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-placeholder{text-align:center;padding:40px;max-width:650px}
.video-placeholder span{display:block;font-size:10px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin-bottom:10px}
.video-placeholder b{font-family:var(--serif);font-size:30px;font-weight:500}
.video-placeholder p{font-size:13px;line-height:1.65;color:#AFC0CF;margin-top:10px}
.video-meta{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:15px 18px;border-top:1px solid #2C465E}
.video-meta span{font-size:11px;color:#AFC0CF}
.video-meta a{font-size:11px;font-weight:700;color:var(--gold);display:none}

/* Click-to-load facade keeps the YouTube payload off first paint. */
.video-facade{position:absolute;inset:0;width:100%;height:100%;padding:0;border:0;background:#03101C;cursor:pointer;display:block}
.video-facade img{width:100%;height:100%;object-fit:cover;opacity:.62;transition:opacity .25s ease}
.video-facade:hover img,.video-facade:focus-visible img{opacity:.8}
.video-facade-play{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px}
.video-facade-play i{width:74px;height:74px;border-radius:50%;background:var(--gold,#B08D3C);display:grid;place-items:center;box-shadow:0 10px 30px rgba(0,0,0,.45);transition:transform .2s ease}
.video-facade:hover .video-facade-play i,.video-facade:focus-visible .video-facade-play i{transform:scale(1.07)}
.video-facade-play i::after{content:"";border-left:20px solid #0B1D2D;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:5px}
.video-facade-play b{font:700 10px/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.75)}

/* -------------------------------------------------------------- thesis -- */
.thesis-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line2);border-top:4px solid var(--navy);background:#fff}
.thesis-step{padding:23px 22px;border-right:1px solid var(--line)}
.thesis-step:last-child{border-right:none}
.thesis-step span{display:block;font-size:9px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-dark);margin-bottom:8px}
.thesis-step b{display:block;font-family:var(--serif);font-size:22px;line-height:1.15;color:var(--navy);margin-bottom:9px}
.thesis-step p{font-size:12.5px;line-height:1.6;color:var(--slate)}

/* ============================ CALCULATOR ================================ */
.calculator-section{background:var(--panel,#F4F2EC)}
.calculator-section .compact-head{margin-bottom:16px}

.preset-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.preset{border:1px solid var(--c-line2);background:#fff;color:var(--c-navy);padding:9px 13px;border-radius:999px;font:700 10px var(--sans);letter-spacing:.06em;text-transform:uppercase;cursor:pointer;transition:border-color .15s ease,background .15s ease,color .15s ease}
.preset:hover{border-color:var(--c-gold)}
.preset.active{border-color:var(--c-gold);background:var(--c-navy);color:#fff}
.preset-hint{margin-left:4px;font-size:11px;color:var(--c-slate)}

.calc-shell{background:#fff;border:1px solid var(--c-line2);border-top:4px solid var(--c-gold);box-shadow:0 18px 44px rgba(11,29,45,.08);overflow:hidden}

/* -- inputs -- */
.calc-input-grid{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--c-line);background:#fff}
.calc-model{padding:20px 24px 18px;min-width:0;--c-accent:var(--c-navy)}
.calc-model:first-child{border-right:1px solid var(--c-line)}
.calc-model.route-b{--c-accent:var(--c-gold);background:linear-gradient(180deg,#fff 0%,#FCFAF3 100%)}
.calc-model-head{display:flex;align-items:baseline;gap:10px;margin-bottom:15px;min-width:0}
.calc-model-head span{flex:0 0 auto;padding:3px 7px;border-radius:3px;background:var(--c-accent);color:#fff;font:700 8px var(--sans);letter-spacing:.14em;text-transform:uppercase}
.calc-model-head h3{margin:0;font-family:var(--serif);font-size:20px;line-height:1.15;color:var(--c-navy);font-weight:600}

.ctrl{margin-bottom:13px}
.ctrl-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.ctrl-top label{font-size:9px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--c-slate)}
.ctrl-num{width:104px;flex:0 0 auto;text-align:right;border:1px solid var(--c-line2);border-radius:5px;background:#fff;outline:0;padding:5px 8px;color:var(--c-navy);font:600 16px var(--sans);font-variant-numeric:tabular-nums;-moz-appearance:textfield}
.ctrl-num::-webkit-outer-spin-button,.ctrl-num::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.ctrl-num:focus-visible{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(176,141,60,.22)}
.ctrl-money{position:relative;flex:0 0 auto;display:block}
.ctrl-money i{position:absolute;left:9px;top:50%;transform:translateY(-50%);font:600 13px var(--sans);font-style:normal;color:var(--c-faint);pointer-events:none}
.ctrl-money .ctrl-num{padding-left:21px}
.ctrl-range{-webkit-appearance:none;appearance:none;display:block;width:100%;height:20px;margin:5px 0 0;background:transparent;cursor:pointer}
.ctrl-range::-webkit-slider-runnable-track{height:4px;border-radius:999px;background:linear-gradient(90deg,var(--c-accent) 0 var(--pct,0%),rgba(11,29,45,.12) var(--pct,0%) 100%)}
.ctrl-range::-webkit-slider-thumb{-webkit-appearance:none;width:15px;height:15px;margin-top:-5.5px;border-radius:50%;background:#fff;border:2px solid var(--c-accent);box-shadow:0 1px 4px rgba(11,29,45,.28)}
.ctrl-range::-moz-range-track{height:4px;border-radius:999px;background:rgba(11,29,45,.12)}
.ctrl-range::-moz-range-progress{height:4px;border-radius:999px;background:var(--c-accent)}
.ctrl-range::-moz-range-thumb{width:15px;height:15px;border-radius:50%;background:#fff;border:2px solid var(--c-accent);box-shadow:0 1px 4px rgba(11,29,45,.28)}
.ctrl-range:focus-visible{outline:2px solid var(--c-accent);outline-offset:4px;border-radius:999px}
.ctrl.stress .ctrl-top label{color:var(--c-gold-dark)}
.ctrl-help{display:block;margin-top:4px;font-size:10px;line-height:1.5;color:#667079}

.model-readout{display:flex;gap:24px;margin-top:16px;padding-top:13px;border-top:1px solid var(--c-line)}
.model-readout div{min-width:0}
.model-readout span{display:block;font-size:7.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--c-slate);margin-bottom:3px}
.model-readout strong{font-family:var(--serif);font-size:23px;line-height:1;color:var(--c-navy);font-variant-numeric:tabular-nums}
.route-b .model-readout strong{color:var(--c-gold-dark)}

/* -- results -- */
.comparison-card{padding:22px 24px 20px;background:linear-gradient(180deg,#FBFCFD 0%,#F6F3EA 100%)}
.comparison-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.leverage-lockup{display:flex;align-items:baseline;gap:13px;min-width:0}
.leverage-lockup span{font-size:8.5px;font-weight:700;letter-spacing:.11em;text-transform:uppercase;color:var(--c-slate)}
.leverage-lockup strong{font-family:var(--serif);font-size:42px;line-height:.9;color:var(--c-gold-dark);font-weight:600;white-space:nowrap;font-variant-numeric:tabular-nums}
.leverage-lockup strong.negative{color:#9C3B2C}
.comparison-head p{margin:0;color:var(--c-slate);font-size:12.5px;text-align:right;max-width:370px}

/* -- burn x calendar chart -- */
.burn-figure{margin:0;padding:20px 0 4px}
.burn-caption{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:10px}
.burn-caption h4{margin:0;font-family:var(--serif);font-size:19px;font-weight:600;color:var(--c-navy)}
.burn-caption b{font-size:8.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#667079}
.burn-chart{display:block;width:100%;height:auto}
.burn-chart .axis-line{stroke:rgba(11,29,45,.25);stroke-width:1}
.burn-chart .grid-line{stroke:rgba(11,29,45,.07);stroke-width:1}
.burn-chart .tick{font:500 9.5px var(--sans);fill:#667079;font-variant-numeric:tabular-nums}
.burn-chart .axis-title{font:700 8.5px var(--sans);letter-spacing:.12em;fill:#667079}
.burn-chart .rect-a{fill:rgba(31,58,82,.10);stroke:#1F3A52;stroke-width:1.5}
.burn-chart .rect-b{fill:rgba(176,141,60,.9);stroke:#8A6B22;stroke-width:1}
.burn-chart .rect-rework{fill:url(#reworkHatch);stroke:#8A6B22;stroke-width:1;stroke-dasharray:3 3}
.burn-chart .label-a{font:600 13px var(--serif);fill:#1F3A52}
.burn-chart .label-a-sub{font:500 9.5px var(--sans);fill:#5A6570}
.burn-chart .label-b{font:600 13px var(--serif);fill:#3A2C08}
.burn-chart .label-b-sub{font:500 9.5px var(--sans);fill:#5A4712}
.burn-chart .tick-a{font:700 9.5px var(--sans);fill:#1F3A52;font-variant-numeric:tabular-nums}
.burn-chart .tick-b{font:700 9.5px var(--sans);fill:#8A6B22;font-variant-numeric:tabular-nums}
.burn-chart .mark-a{stroke:#1F3A52;stroke-width:1;stroke-dasharray:2 3;opacity:.45}
.burn-chart .mark-b{stroke:#B08D3C;stroke-width:1;stroke-dasharray:2 3;opacity:.7}
.burn-chart .rect-a,.burn-chart .rect-b,.burn-chart .rect-rework{transition:x .4s ease,y .4s ease,width .4s ease,height .4s ease}
.burn-chart .label-a,.burn-chart .label-a-sub,.burn-chart .label-b,.burn-chart .label-b-sub{transition:x .4s ease,y .4s ease}
.burn-note{margin:12px 0 0;font-size:11.5px;line-height:1.6;color:var(--c-slate)}
.burn-note strong{color:var(--c-navy)}
.burn-note em{font-style:normal;color:var(--c-gold-dark);font-weight:700}

/* -- metric strip -- */
.calc-metrics{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--c-line);margin-top:18px;padding-top:16px}
.calc-metrics>div{padding:0 18px;border-right:1px solid var(--c-line);min-width:0}
.calc-metrics>div:first-child{padding-left:0}
.calc-metrics>div:last-child{border-right:0;padding-right:0}
.calc-metrics span{display:block;font-size:7.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--c-slate);margin-bottom:4px}
.calc-metrics strong{display:block;font-family:var(--serif);font-size:24px;line-height:1;color:var(--c-navy);font-variant-numeric:tabular-nums}
.calc-metrics small{display:block;margin-top:4px;font-size:9.5px;line-height:1.45;color:#667079}

/* -- break-even meter -- */
.breakeven{margin-top:18px;padding:16px 18px;border:1px solid var(--c-line);border-left:3px solid var(--c-gold);background:#fff}
.breakeven-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap}
.breakeven-head span{font-size:8px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--c-slate)}
.breakeven-head b{font-size:11.5px;color:var(--c-navy);font-weight:600;font-variant-numeric:tabular-nums}
.meter{position:relative;height:10px;margin:12px 0 9px;border-radius:999px;background:rgba(11,29,45,.09);overflow:hidden}
.meter-fill{display:block;height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,#C49A2C,#D6B65D);transition:width .4s ease,background .3s ease}
.meter-scale{display:flex;justify-content:space-between;font-size:9.5px;color:#667079;font-variant-numeric:tabular-nums}
.breakeven p{margin:9px 0 0;font-size:11.5px;line-height:1.6;color:var(--c-slate)}
.breakeven p strong{color:var(--c-navy)}
.breakeven.over{border-left-color:#9C3B2C}
.breakeven.over .meter-fill{background:linear-gradient(90deg,#9C3B2C,#C05740)}
.breakeven.over p strong{color:#9C3B2C}

/* -- transparent math -- */
.calc-details{border-top:1px solid var(--c-line);background:#fff}
.calc-details summary{cursor:pointer;padding:12px 24px;font-size:9px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--c-slate);list-style:none}
.calc-details summary::-webkit-details-marker{display:none}
.calc-details summary::after{content:"+";float:right;font-size:14px;line-height:.8;color:var(--c-gold-dark)}
.calc-details[open] summary::after{content:"\2212"}
.formula{display:grid;grid-template-columns:1.05fr .95fr;border-top:1px solid var(--c-line)}
.formula-left,.formula-right{padding:18px 22px}
.formula-left{border-right:1px solid var(--c-line);background:var(--c-warm)}
.formula h3{font-family:var(--serif);font-size:17px;color:var(--c-navy);margin-bottom:9px}
.equation{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:10.5px;line-height:1.95;color:#34415A;background:#fff;padding:12px 13px;border-left:3px solid var(--c-gold)}
.decomp{display:grid;gap:6px}
.decomp div{display:grid;grid-template-columns:1fr auto;gap:16px;padding:6px 0;border-bottom:1px solid var(--c-line);font-size:11px}
.decomp div:last-child{border-bottom:0;font-weight:700}
.decomp b{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--c-navy)}

.calc-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:13px 22px;border-top:1px solid var(--c-line);background:#fff}
.calc-actions .btn{min-height:39px;padding:0 14px;font-size:10px;cursor:pointer}
.copy-status{font-size:11px;color:var(--c-slate)}
.disclosure-box{margin-top:14px;padding:13px 16px;border-left:4px solid var(--c-gold);background:#fff;font-size:11.5px;line-height:1.65;color:var(--c-slate)}
.disclosure-box strong{color:var(--c-navy)}

/* --------------------------------------------------------- system flow -- */
.system-flow{display:grid;grid-template-columns:1fr 100px 1fr;gap:20px;align-items:center}
.system-card{border:1px solid var(--line2);border-top:4px solid var(--navy);padding:27px;background:#fff}
.system-card.fde{border-top-color:var(--gold)}
.system-card h3{font-family:var(--serif);font-size:26px;color:var(--navy);margin-bottom:16px}
.rolegrid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.role{padding:11px;border:1px solid var(--line);background:var(--warm);font-size:9.5px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--navy)}
.loopline{display:flex;gap:7px;flex-wrap:wrap}
.loopline span{padding:10px 11px;background:#F7F1E1;border:1px solid #D7C28B;font-size:9.5px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--navy)}
.system-card p{color:var(--slate);font-size:12.5px;margin-top:15px}
.system-arrow{text-align:center;font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-dark)}

/* ---------------------------------------------------------- acceptance -- */
.acceptance{background:var(--navy);color:#fff;border-bottom:4px solid var(--gold)}
.acceptance .section-head h2{color:#fff}
.acceptance .section-head .lede{color:#C0CCD7}
.acceptance-box{border:1px solid #395269;background:#0F2941;padding:28px 30px}
.acceptance-box strong{font-family:var(--serif);font-size:28px;font-weight:500}
.acceptance-box p{margin-top:10px;color:#C4D0DB;max-width:900px}
.acceptance-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px}
.acceptance-grid div{border:1px solid #3B556D;background:#0A2034;padding:17px}
.acceptance-grid b{display:block;color:var(--gold);font-size:10px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:6px}
.acceptance-grid p{font-size:12px;line-height:1.6;margin:0;color:#B9C7D3}

/* --------------------------------------------------------------- paths -- */
.path-section{background:#fff}
.path-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.path-card{border:1px solid var(--line2);border-top:4px solid var(--navy);padding:30px;background:var(--warm)}
.path-card.enterprise-path{border-top-color:var(--gold);background:#F7F1E1}
.path-card span{font-size:9.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-dark)}
.path-card h3{font-family:var(--serif);font-size:29px;line-height:1.1;color:var(--navy);margin:8px 0 12px}
.path-card p{font-size:13.5px;line-height:1.65;color:var(--slate)}
.path-card .btn{margin-top:20px}
.path-note{margin-top:15px;font-size:11px;color:var(--faint)}

/* ------------------------------------------------------------ responsive */
@media(max-width:980px){
  .episode-hero-grid,.system-flow{grid-template-columns:1fr}
  .episode-hero-card{max-width:600px}
  .system-arrow{padding:3px 0}
  .thesis-grid{grid-template-columns:repeat(2,1fr)}
  .thesis-step:nth-child(2){border-right:0}
  .thesis-step:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
@media(max-width:860px){
  .calc-input-grid{grid-template-columns:1fr}
  .calc-model:first-child{border-right:0;border-bottom:1px solid var(--c-line)}
  .comparison-head{flex-direction:column;align-items:flex-start;gap:9px}
  .comparison-head p{text-align:left;max-width:none}
  .formula{grid-template-columns:1fr}
  .formula-left{border-right:0;border-bottom:1px solid var(--c-line)}
}
@media(max-width:760px){
  .episode-hero{padding:50px 0}
  .episode-hero-grid{gap:34px}
  .episode-hero-card b{font-size:44px}
  .thesis-grid,.path-grid{grid-template-columns:1fr}
  .thesis-step{border-right:0;border-bottom:1px solid var(--line)}
  .thesis-step:last-child{border-bottom:0}
  .acceptance-grid{grid-template-columns:1fr}
  .video-meta{align-items:flex-start;flex-direction:column}
  .video-facade-play i{width:58px;height:58px}
}
@media(max-width:620px){
  .calc-model,.comparison-card{padding:16px}
  .calc-metrics{grid-template-columns:1fr;gap:11px}
  .calc-metrics>div,.calc-metrics>div:first-child,.calc-metrics>div:last-child{padding:0 0 11px;border-right:0;border-bottom:1px solid var(--c-line)}
  .calc-metrics>div:last-child{border-bottom:0;padding-bottom:0}
  .leverage-lockup{flex-direction:column;align-items:flex-start;gap:4px}
  .leverage-lockup strong{font-size:36px}
  .model-readout{gap:16px}
  .ctrl-num{width:92px;font-size:15px}
  .calc-actions{padding:13px 16px}
  .formula-left,.formula-right{padding:16px}
}
@media(prefers-reduced-motion:reduce){
  .burn-chart .rect-a,.burn-chart .rect-b,.burn-chart .rect-rework,
  .burn-chart .label-a,.burn-chart .label-a-sub,.burn-chart .label-b,.burn-chart .label-b-sub,
  .meter-fill,.video-facade img,.video-facade-play i{transition:none}
}