:root{--fairway:#10271F;--moss:#1B4332;--line:#2C5141;--sand:#E9E1CE;--sand-dim:#A9B2A2;--gold:#C8A24B;--gold-hi:#E6C66E;--ink:#0A1712;--paper:#F7F3E9;--topbar:52px}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden;font-family:Inter,system-ui,sans-serif;color:var(--sand);background:var(--ink)}
button{font:inherit;cursor:pointer}
.hidden{display:none!important}

/* ---- top bar */
.top{height:var(--topbar);display:flex;align-items:center;gap:24px;padding:0 20px;background:var(--fairway);border-bottom:1px solid var(--line);position:relative;z-index:30}
.brand{font-family:Fraunces,serif;font-weight:600;font-size:19px;color:var(--paper);letter-spacing:.04em;white-space:nowrap}
.brand b{color:var(--gold)}.brand span{font-family:Inter,sans-serif;font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--sand-dim);font-weight:600;margin-left:4px}
.dots{flex:1;display:flex;justify-content:center;gap:10px}
.dot{width:10px;height:10px;border-radius:50%;border:1.5px solid var(--sand-dim);background:transparent;padding:0;transition:.25s}
.dot:hover{border-color:var(--gold-hi)}
.dot.done{background:var(--line);border-color:var(--line)}
.dot.on{background:var(--gold);border-color:var(--gold);transform:scale(1.25)}
.topnav{position:relative}
.menu-btn{border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--sand);border-radius:8px;padding:7px 12px;font-size:13px}
.menu-btn:hover{border-color:var(--gold)}.menu-btn span{font-size:10px;margin-left:4px;opacity:.7}
.menu{position:absolute;right:0;top:calc(100% + 8px);width:340px;background:var(--fairway);border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:0 18px 50px rgba(0,0,0,.55)}
.menu button{display:flex;gap:12px;align-items:baseline;width:100%;text-align:left;border:0;background:transparent;color:var(--sand);padding:9px 12px;border-radius:8px;font-size:13px}
.menu button:hover{background:rgba(255,255,255,.05)}.menu button.on{background:var(--moss);color:var(--paper)}
.menu button i{font-style:normal;font-family:Fraunces,serif;color:var(--gold);min-width:18px}

/* ---- stage: the two platform builds, stacked; the blocker keeps the tour locked */
.stage{position:absolute;top:var(--topbar);left:0;right:0;bottom:0;overflow:hidden}
.course{position:absolute;inset:0;width:100%;height:100%;border:0;opacity:0;transition:opacity .7s ease}
.course.on{opacity:1}
.veil{position:absolute;inset:0;pointer-events:none;background:radial-gradient(80% 70% at 50% 50%,rgba(10,23,18,.25),rgba(10,23,18,.82));backdrop-filter:blur(2px);opacity:0;transition:opacity .8s ease}
.veil.on{opacity:1}
.blocker{position:absolute;inset:0;z-index:5}
.arrows{position:absolute;inset:0;width:100%;height:100%;z-index:6;pointer-events:none;overflow:visible}
.pointers{position:absolute;inset:0;z-index:7;pointer-events:none}

/* map arrow: dashed path + label + pulsing target */
.arrows path.a{fill:none;stroke:var(--gold-hi);stroke-width:2.2;stroke-dasharray:7 6;filter:drop-shadow(0 1px 2px rgba(0,0,0,.7));
  stroke-dashoffset:0;transition:opacity .4s}
.arrows circle.t{fill:none;stroke:var(--gold-hi);stroke-width:2;transform-box:fill-box;transform-origin:center;animation:pulse 1.8s ease-out infinite}
.arrows circle.c{fill:var(--gold-hi);stroke:var(--ink);stroke-width:1.5}
@keyframes pulse{0%{transform:scale(.6);opacity:1}100%{transform:scale(2.2);opacity:0}}
.arrows g{opacity:0;transition:opacity .45s ease}.arrows g.on{opacity:1}
.tip{position:absolute;max-width:290px;background:rgba(10,23,18,.94);border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:10px;
  padding:11px 14px;font-size:13px;line-height:1.5;color:var(--paper);box-shadow:0 10px 34px rgba(0,0,0,.5);
  opacity:0;transform:translateY(6px);transition:opacity .4s ease,transform .4s ease}
.tip.on{opacity:1;transform:none}
.tip .k{display:block;font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);font-weight:600;margin-bottom:4px}
/* coachmark: ring around a platform control */
.ring{position:absolute;border:2px solid var(--gold-hi);border-radius:10px;box-shadow:0 0 0 4px rgba(230,198,110,.18),0 0 24px rgba(230,198,110,.35);
  opacity:0;transition:opacity .4s ease}
.ring.on{opacity:1;animation:glow 2.2s ease-in-out infinite}
@keyframes glow{50%{box-shadow:0 0 0 7px rgba(230,198,110,.08),0 0 30px rgba(230,198,110,.5)}}

/* ---- narration card */
.card{position:absolute;z-index:10;width:400px;max-width:calc(100% - 40px);background:linear-gradient(180deg,rgba(28,58,46,.97),rgba(16,39,31,.97));
  border:1px solid var(--line);border-radius:14px;padding:18px 20px 14px;box-shadow:0 22px 60px rgba(0,0,0,.6);
  opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s cubic-bezier(.2,.8,.2,1),left .5s ease,top .5s ease}
.card.on{opacity:1;transform:none}
.c-eyebrow{font-size:10px;letter-spacing:.26em;text-transform:uppercase;color:var(--gold);font-weight:600}
.card h2{font-family:Fraunces,serif;font-weight:600;font-size:22px;line-height:1.2;color:var(--paper);margin-top:7px}
.card p{font-size:13.5px;line-height:1.6;color:var(--sand);margin-top:9px}
.c-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:12px;border-top:1px solid var(--line)}
.c-step{font-size:11px;color:var(--sand-dim);letter-spacing:.08em}
.nav{border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--sand);border-radius:8px;padding:8px 14px;font-size:13px;font-weight:500}
.nav:hover:not(:disabled){border-color:var(--gold)}.nav:disabled{opacity:.35;cursor:default}
.nav.primary{background:var(--gold);border-color:var(--gold);color:var(--ink);font-weight:600}
.nav.primary:hover{background:var(--gold-hi)}

/* ---- intro / outro */
.hero{position:absolute;z-index:12;left:50%;top:50%;width:560px;max-width:calc(100% - 40px);transform:translate(-50%,-46%);text-align:center;
  background:rgba(16,39,31,.86);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:18px;padding:38px 44px 30px;box-shadow:0 30px 80px rgba(0,0,0,.6);
  opacity:0;transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.hero.on{opacity:1;transform:translate(-50%,-50%)}
.eyebrow{font-size:10.5px;letter-spacing:.32em;text-transform:uppercase;color:var(--gold);font-weight:600}
.hero h1{font-family:Fraunces,serif;font-weight:600;font-size:36px;line-height:1.12;color:var(--paper);margin-top:12px}
.hero h1 em{font-style:italic;color:var(--gold-hi)}
.hero p{font-size:15px;line-height:1.65;color:var(--sand);margin-top:16px}
.start{margin-top:26px;border:0;border-radius:10px;background:var(--gold);color:var(--ink);font-weight:600;font-size:15px;padding:13px 30px}
.start:hover:not(:disabled){background:var(--gold-hi)}.start:disabled{opacity:.6;cursor:default}
.laptop{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:12px;color:var(--sand-dim);border:1px solid var(--line);border-radius:999px;padding:6px 14px}
.contact{display:flex;flex-direction:column;gap:10px;margin-top:24px;align-items:center}
.contact a{color:var(--paper);text-decoration:none;font-size:16px;border-bottom:1px solid var(--gold);padding-bottom:2px}
.contact a:first-child{font-family:Fraunces,serif;font-size:22px}
.contact a:hover{color:var(--gold-hi)}
.outro-nav{display:flex;justify-content:center;gap:10px;margin-top:28px}

/* ---- static annotated panel (Stop 5) */
.panel{position:absolute;z-index:11;left:50%;top:50%;width:min(1180px,calc(100% - 60px));max-height:calc(100% - 50px);translate:-50% -50%;display:flex;flex-direction:column;background:rgba(10,23,18,.94);backdrop-filter:blur(8px);
  border:1px solid var(--line);border-radius:16px;box-shadow:0 30px 80px rgba(0,0,0,.6);overflow:auto;
  opacity:0;transform:scale(.985);transition:opacity .6s ease,transform .6s ease}
.panel.on{opacity:1;transform:none}
.p-head{padding:22px 28px 0}
.p-head h2{font-family:Fraunces,serif;font-weight:600;font-size:26px;color:var(--paper);margin-top:6px}
.p-body{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(260px,1fr);gap:26px;padding:18px 28px 8px;align-items:start}
.p-text{font-size:14px;line-height:1.65;color:var(--sand);margin-top:16px}
.p-note{font-size:11px;color:var(--sand-dim);margin-top:10px}
table.pin{width:100%;border-collapse:separate;border-spacing:0;font-size:13px;border:1px solid var(--line);border-radius:10px;overflow:hidden}
table.pin th{font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--sand-dim);font-weight:600;text-align:right;padding:10px 10px;background:var(--fairway);border-bottom:1px solid var(--line);line-height:1.35}
table.pin th:first-child,table.pin td:first-child{text-align:left}
table.pin td{padding:10px 10px;text-align:right;color:var(--paper);border-bottom:1px solid rgba(44,81,65,.6);font-variant-numeric:tabular-nums}
table.pin tr:last-child td{border-bottom:0}
table.pin td.s{color:#0A1712;font-weight:600}
table.pin td u{text-decoration:none;color:var(--sand-dim);font-size:10.5px;margin-left:2px}
table.pin td.s u{color:rgba(10,23,18,.6)}
.legend{display:flex;gap:16px;font-size:11px;color:var(--sand-dim);margin-top:10px}.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.green-fig{border:1px solid var(--line);border-radius:12px;background:radial-gradient(90% 80% at 50% 45%,#16382b,#0d2219);padding:14px 14px 10px}
.green-fig h4{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--sand-dim);font-weight:600}
.green-fig svg,.green-fig img{display:block;width:100%;max-height:380px;height:auto;margin-top:6px;border-radius:8px}
.p-foot{display:flex;justify-content:flex-end;align-items:center;gap:12px;padding:12px 28px 20px;margin-top:auto}

.loading{position:absolute;inset:0;z-index:40;display:flex;align-items:center;justify-content:center;background:var(--ink);font-family:Fraunces,serif;font-size:20px;color:var(--sand-dim);transition:opacity .6s}
.loading.off{opacity:0;pointer-events:none}
.green-fig.img img{background:#fff;padding:10px;max-height:420px;object-fit:contain}
/* a faded-out card never catches clicks meant for what is showing */
.hero:not(.on),.card:not(.on),.panel:not(.on){pointer-events:none}