:root{
  --navy:#071a33;--navy2:#0b2a4a;--ink:#102033;--muted:#657386;--paper:#f5f7fb;--card:#fff;
  --gold:#eeb43b;--gold2:#ffd978;--teal:#0e8796;--green:#19855b;--red:#c74848;--line:#dfe5ed;
  --shadow:0 12px 30px rgba(5,22,44,.12);--radius:22px;--safe-b:env(safe-area-inset-bottom,0px);--safe-t:env(safe-area-inset-top,0px)
}
*{box-sizing:border-box}html{background:var(--navy);-webkit-text-size-adjust:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",sans-serif;background:var(--paper);color:var(--ink);min-height:100vh}button,input{font:inherit}.app-shell{max-width:760px;margin:0 auto;min-height:100vh;background:var(--paper);position:relative;padding-bottom:calc(76px + var(--safe-b))}.topbar{height:calc(58px + var(--safe-t));padding:var(--safe-t) 14px 0;background:rgba(7,26,51,.97);color:#fff;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(255,255,255,.08)}.brand-lockup{display:flex;gap:8px;align-items:center;line-height:1}.brand-lockup strong{font-size:13px;letter-spacing:.09em}.brand-lockup small{display:block;font-size:10px;color:#c9d5e5;margin-top:4px;letter-spacing:.06em}.sun-mark{color:var(--gold);font-size:20px}.icon-btn{width:44px;height:44px;border:0;border-radius:50%;background:transparent;color:inherit;font-size:22px;display:grid;place-items:center}.icon-btn:active{background:rgba(255,255,255,.1)}.hidden{visibility:hidden}.bottom-nav{position:fixed;z-index:30;bottom:0;left:50%;transform:translateX(-50%);width:min(760px,100%);height:calc(68px + var(--safe-b));padding:7px 8px var(--safe-b);background:rgba(255,255,255,.96);backdrop-filter:blur(20px);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,1fr)}.nav-item{border:0;background:transparent;color:#7b8798;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-width:0;min-height:50px}.nav-item span{font-size:20px}.nav-item small{font-size:10px}.nav-item.active{color:var(--navy);font-weight:800}.nav-item.active span{color:var(--gold)}main{min-height:70vh}.page{padding:18px 16px 26px}.hero{min-height:410px;background:linear-gradient(180deg,rgba(7,26,51,.15),rgba(7,26,51,.93)),linear-gradient(135deg,#19738e,#071a33);color:white;position:relative;overflow:hidden;padding:30px 20px 24px;display:flex;flex-direction:column;justify-content:flex-end}.hero.has-photo:before{content:"";position:absolute;inset:0;background-image:var(--hero-image);background-size:cover;background-position:center 42%;opacity:.78}.hero.graphic-hero{background:radial-gradient(circle at 74% 25%,rgba(46,139,178,.36),transparent 32%),linear-gradient(155deg,#164f70 0%,#0a2948 44%,#06172c 100%)}.hero.graphic-hero .hero-fallback{opacity:.48;top:55px;filter:drop-shadow(0 12px 22px rgba(0,0,0,.18))}.hero>*{position:relative}.hero .eyebrow{color:var(--gold2)}.hero h1{font-size:38px;line-height:.98;margin:8px 0 10px;letter-spacing:-.035em}.hero p{max-width:460px;color:#e8eef7;font-size:15px;margin:0 0 18px}.hero-fallback{position:absolute;left:4%;right:4%;top:36px;opacity:.22}.eyebrow{text-transform:uppercase;font-size:11px;font-weight:800;letter-spacing:.15em;color:#516176}.primary-btn,.secondary-btn,.gold-btn,.danger-btn{border:0;border-radius:14px;min-height:48px;padding:0 18px;font-weight:800}.primary-btn,.gold-btn{background:linear-gradient(180deg,var(--gold2),var(--gold));color:#17263a;box-shadow:0 8px 18px rgba(238,180,59,.24)}.secondary-btn{background:#edf2f7;color:var(--navy)}.danger-btn{background:#fff0f0;color:#9d2c2c;border:1px solid #f1c7c7;width:100%;margin-top:18px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.hero-actions button{flex:1;min-width:150px}.section{margin:18px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:12px;margin-bottom:10px}.section-head h2{margin:0;font-size:22px;letter-spacing:-.025em}.section-head p{margin:4px 0 0}.muted{color:var(--muted)}.tiny{font-size:11px}.small{font-size:13px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.soft-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:15px}.continue-card{margin-top:-18px;position:relative;padding:16px;background:linear-gradient(140deg,#102f55,#0a1d38);color:#fff;border:1px solid rgba(255,255,255,.12);border-radius:20px;box-shadow:0 18px 35px rgba(7,26,51,.22)}.continue-card .row{display:flex;align-items:center;justify-content:space-between;gap:12px}.progress-mini{height:6px;background:rgba(255,255,255,.16);border-radius:99px;overflow:hidden;margin:10px 0}.progress-mini i{display:block;height:100%;background:var(--gold);border-radius:inherit}.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.stat-card{padding:14px;border-radius:18px;background:#fff;border:1px solid var(--line)}.stat-card b{display:block;font-size:22px;color:var(--navy)}.stat-card span{font-size:11px;color:var(--muted)}.home-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.home-tile{min-height:112px;text-align:left;padding:15px;border:1px solid var(--line);border-radius:18px;background:white;color:var(--ink)}.home-tile b{display:block;margin:10px 0 4px}.home-tile span{font-size:11px;color:var(--muted)}.home-tile .tile-icon{font-size:25px;color:var(--teal)}.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}.chips::-webkit-scrollbar{display:none}.chip{border:1px solid var(--line);background:#fff;color:#526174;border-radius:999px;padding:9px 13px;white-space:nowrap;min-height:40px}.chip.active{background:var(--navy);color:#fff;border-color:var(--navy)}.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.spec-card{border:1px solid var(--line);border-radius:18px;padding:14px;background:#fff;min-height:124px;text-align:left}.spec-card .spec-icon{color:var(--teal);font-size:18px}.spec-card b{display:block;font-size:20px;margin:9px 0 2px}.spec-card small{color:var(--muted)}.spec-card.seen{border-color:#abdcd4;background:#f6fffc}.learning-banner{padding:16px;border-radius:18px;background:linear-gradient(135deg,#fff6dc,#fff);border:1px solid #f0d897;margin-bottom:14px}.learning-banner strong{display:block;margin-bottom:4px}.detail-sheet{padding:18px}.detail-sheet h2{margin:2px 0 8px}.detail-sheet p{line-height:1.5}.detail-meta{display:flex;flex-wrap:wrap;gap:7px;margin:10px 0}.tag{padding:6px 9px;border-radius:999px;background:#edf2f7;color:#405067;font-size:11px;font-weight:700}.tag.gold{background:#fff2cf;color:#795600}.photo-wrap{aspect-ratio:16/10;background:linear-gradient(135deg,#183c62,#061729);overflow:hidden;position:relative}.photo-wrap img{width:100%;height:100%;object-fit:cover;display:block}.photo-fallback{position:absolute;inset:0;display:grid;place-items:center;color:#dce9f6;text-align:center;padding:20px}.photo-fallback .big{font-size:42px;display:block;color:var(--gold);margin-bottom:8px}.venue-list{display:grid;gap:10px}.venue-card{display:flex;gap:13px;align-items:center;padding:12px;background:#fff;border:1px solid var(--line);border-radius:17px;text-align:left;width:100%;color:inherit}.venue-card .venue-dot{width:42px;height:42px;border-radius:13px;background:#eaf3f7;display:grid;place-items:center;color:var(--teal);font-weight:900;flex:0 0 auto}.venue-card b{display:block}.venue-card small{color:var(--muted);display:block;margin-top:3px}.venue-card .arrow{margin-left:auto;color:#9aa6b5}.deck-layout{background:linear-gradient(180deg,#fdfefe,#eef4f8);border:1px solid var(--line);border-radius:22px;padding:10px;overflow:hidden}.deck-layout svg{width:100%;max-height:570px;display:block}.deck-selector{display:flex;gap:7px;overflow:auto;padding:0 0 10px;scrollbar-width:none}.deck-btn{border:1px solid var(--line);background:white;border-radius:12px;min-width:52px;height:42px}.deck-btn.active{background:var(--navy);color:white}.map-legend{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-top:7px}.schematic-note{font-size:10px;color:var(--muted);text-align:center;margin:7px 0 0}.challenge-wrap{max-width:590px;margin:0 auto}.challenge-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.chapter-pill{font-size:11px;padding:7px 10px;border-radius:999px;background:#eaf0f7;color:#3a4a60;font-weight:800}.question-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)}.question-card h1{font-size:26px;line-height:1.12;margin:14px 0 20px}.question-meta{font-size:11px;color:var(--muted)}.options{display:grid;gap:10px}.option{border:1.5px solid #ccd6e2;border-radius:15px;min-height:52px;padding:11px 13px;background:white;text-align:left;font-weight:700;color:#24354b;transition:.16s}.option:active{transform:scale(.99)}.option.selected{border-color:var(--teal);background:#effcfd}.option.disabled{opacity:.35;text-decoration:line-through}.question-actions{display:flex;gap:10px;margin-top:18px}.question-actions button{flex:1}.hint-box{margin:12px 0 0;padding:12px;border-radius:13px;background:#fff7df;border:1px solid #f1dc9c;color:#6f5715;font-size:13px}.feedback{padding:24px 18px 30px;text-align:center;max-width:590px;margin:0 auto}.feedback-icon{width:78px;height:78px;margin:10px auto 15px;border-radius:50%;display:grid;place-items:center;font-size:34px;background:#e7f8f0;color:var(--green)}.feedback.wrong .feedback-icon{background:#fff1ec;color:#bd593f}.feedback h1{font-size:30px;margin:0 0 8px}.feedback p{line-height:1.5;color:#566579}.teach-card{margin:18px 0;text-align:left;background:#fff;border:1px solid var(--line);border-radius:20px;padding:17px}.mastery-badge{display:inline-flex;align-items:center;gap:7px;background:#e9f8f1;color:#176b4b;padding:8px 11px;border-radius:999px;font-size:12px;font-weight:800}.ring{--p:0;position:relative;width:124px;height:124px;border-radius:50%;background:conic-gradient(var(--green) calc(var(--p)*1%),#e4e9ef 0);display:grid;place-items:center}.ring:before{content:"";position:absolute;width:92px;height:92px;border-radius:50%;background:#fff}.ring strong,.ring span{position:relative;z-index:1}.ring strong{font-size:30px}.progress-hero{display:flex;gap:20px;align-items:center;padding:18px}.chapter-row{display:grid;grid-template-columns:1fr auto;gap:6px;padding:13px 0;border-bottom:1px solid var(--line)}.chapter-row:last-child{border:0}.chapter-row .bar{grid-column:1/3;height:6px;background:#edf1f5;border-radius:99px;overflow:hidden}.chapter-row .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--green));border-radius:inherit}.voyage-home{background:linear-gradient(145deg,#09213d,#123f65);color:white;padding:22px}.voyage-home h1{margin:8px 0;font-size:30px}.cabin-badge{display:inline-flex;gap:8px;align-items:center;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);padding:9px 12px;border-radius:999px}.evidence-photo{width:100%;display:block;border-radius:18px}.accordion{border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden}.accordion summary{padding:14px;font-weight:800;cursor:pointer}.accordion .inner{padding:0 14px 14px}.grand-card{background:linear-gradient(145deg,#061a33,#143e68);color:white;border-radius:24px;padding:22px;position:relative;overflow:hidden}.grand-card:after{content:"☀";position:absolute;font-size:140px;right:-25px;bottom:-45px;color:rgba(238,180,59,.1)}.grand-card h2{margin:6px 0 8px}.locked{opacity:.65}.expert-banner{text-align:center;padding:25px;background:linear-gradient(180deg,#fff7de,#fff);border:1px solid #ecd89e;border-radius:24px}.expert-mark{font-size:58px;color:var(--gold);margin-bottom:6px}.dialog-card{border:0;border-radius:22px;padding:18px;width:min(420px,calc(100% - 28px));box-shadow:0 30px 80px rgba(0,0,0,.3)}.dialog-card::backdrop{background:rgba(2,11,25,.55);backdrop-filter:blur(4px)}.dialog-head{display:flex;justify-content:space-between;align-items:center}.dialog-head strong{font-size:20px}.switch-row{display:flex;align-items:center;gap:10px;padding:12px 0}.toast{position:fixed;z-index:60;left:50%;bottom:calc(84px + var(--safe-b));transform:translate(-50%,12px);background:#10243c;color:white;border-radius:999px;padding:10px 14px;font-size:12px;opacity:0;pointer-events:none;transition:.2s;max-width:calc(100% - 28px);text-align:center}.toast.show{opacity:1;transform:translate(-50%,0)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.source-note{border-left:3px solid var(--teal);padding-left:10px;color:var(--muted);font-size:11px;line-height:1.45}.spotlight{animation:spot 1.6s ease-in-out 1}@keyframes spot{0%{transform:scale(.98);opacity:.6}60%{transform:scale(1.02)}100%{transform:none;opacity:1}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media(min-width:650px){.page{padding:24px}.spec-grid{grid-template-columns:repeat(3,1fr)}.home-grid{grid-template-columns:repeat(4,1fr)}.stat-grid{grid-template-columns:repeat(4,1fr)}.hero{min-height:460px;padding:42px}.hero h1{font-size:48px}}@media(max-width:360px){.hero h1{font-size:33px}.spec-grid{grid-template-columns:1fr}.question-card h1{font-size:23px}.brand-lockup strong{font-size:12px}}

/* RC3 finalisation: spatial semantics, cabin annotation, iPhone map sizing */
:focus-visible{outline:3px solid #2c8fc0;outline-offset:3px}.page-title{font-size:34px;line-height:1.05;margin:8px 0 10px;letter-spacing:-.035em}.full{width:100%}.continue-card strong{display:block;margin-top:5px}.continue-card .small{color:#c9d5e5}.chip{min-height:44px}.deck-btn{height:44px}.spec-card,.venue-card,.home-tile{min-height:44px}.reduce-motion *, .reduce-motion *::before, .reduce-motion *::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}.grand-card .eyebrow,.voyage-home .eyebrow{color:var(--gold2)}

.deck-explorer-grid{display:grid;grid-template-columns:86px minmax(0,1fr);gap:10px;align-items:start}.elevation{background:linear-gradient(180deg,#0b2a4a,#071a33);border-radius:20px;padding:10px 8px;color:white;box-shadow:var(--shadow)}.elevation-bow,.elevation-aft{text-align:center;font-size:7px;font-weight:900;letter-spacing:.1em;color:#9eb3c8;padding:5px 0;line-height:1.15}.elevation-stack{display:flex;flex-direction:column;gap:2px}.elevation-deck{border:0;border-radius:8px;min-height:25px;padding:2px 5px;background:rgba(255,255,255,.07);color:#8295aa;display:flex;align-items:center;justify-content:space-between;font-size:10px}.elevation-deck span{font-weight:900}.elevation-deck i{font-style:normal;font-size:7px;text-transform:uppercase;letter-spacing:.08em}.elevation-deck.mapped{color:#eef6ff;background:rgba(255,255,255,.12)}.elevation-deck.mapped:not(:disabled){cursor:pointer}.elevation-deck.active{background:var(--gold);color:#16243a;box-shadow:0 0 0 2px rgba(255,217,120,.28)}.elevation-deck:disabled{opacity:.65}

.deck-layout svg{max-height:none}.deck-explorer-grid .deck-layout svg{max-height:470px;margin:0 auto}.pin-label{font-size:9px;font-weight:750;fill:#17324f}.cabin-pin-label{font-weight:900;fill:#74540a}.pin-leader{fill:none;stroke:#c58c16;stroke-width:1.5;stroke-linecap:round}.deck-hull{fill:#fff;stroke:#9fb0c1;stroke-width:2.2;filter:drop-shadow(0 5px 8px rgba(8,32,57,.08))}.deck-title{font-size:12px;font-weight:900;fill:#0b2a4a;letter-spacing:.1em}.zone-divider{stroke:#dfe6ed;stroke-width:1;stroke-dasharray:4 5}.zone-label,.side-label{font-size:7.5px;font-weight:850;fill:#8390a0;letter-spacing:.08em}.lift-core rect{fill:#e9eef3;stroke:#abb9c7;stroke-width:1}.lift-core path{stroke:#a6b4c2;stroke-width:1}.map-pin text{pointer-events:none}.map-pin.target circle:first-child{animation:mapPulse 1.7s ease-in-out infinite}.route-line{stroke:#19855b;stroke-width:4;fill:none;stroke-linecap:round;stroke-dasharray:7 6}.map-unavailable{min-height:260px;display:grid;place-content:center;text-align:center;color:var(--muted);gap:4px}.map-unavailable strong{font-size:24px;color:var(--navy)}@keyframes mapPulse{0%,100%{opacity:.22;transform:scale(.9);transform-origin:center}50%{opacity:.55;transform:scale(1.08);transform-origin:center}}

.venue-hero{background:linear-gradient(145deg,#0a2745,#134e69);min-height:250px}.venue-map-reward{height:300px;background:linear-gradient(180deg,#f8fbfd,#e8f0f6);padding:8px}.venue-map-reward svg{width:100%;height:100%}.photo-fallback.static{position:relative;min-height:250px}.confidence-note{padding:12px;border-radius:14px;background:#f5f7fa;border:1px solid var(--line);font-size:12px;color:var(--muted)}

.challenge-map{margin:14px 0 8px}.challenge-map .deck-layout{max-width:310px;margin:0 auto;padding:5px}.challenge-map .deck-layout svg{max-height:310px}.challenge-map.compact .deck-layout svg{max-height:250px}.visual-caption{text-align:center;color:var(--muted);font-size:10px;margin-top:5px;text-transform:uppercase;letter-spacing:.1em}.deck-tap{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:16px 0}.deck-choice{min-height:78px;border:1.5px solid #cbd6e2;border-radius:16px;background:linear-gradient(180deg,#fff,#f5f8fb);color:var(--navy);display:flex;align-items:center;gap:10px;padding:10px 14px;text-align:left}.deck-choice b{font-size:30px;color:var(--teal)}.deck-choice span{font-size:12px;font-weight:800}.deck-choice:active{transform:scale(.985)}.deck-choice.hint-disabled{opacity:.35;text-decoration:line-through}.zone-visual{display:grid;grid-template-rows:repeat(3,1fr);height:220px;border:1px solid var(--line);border-radius:26px;overflow:hidden;margin:14px auto;max-width:260px;background:#fff}.zone-visual div{display:grid;place-items:center;font-size:11px;font-weight:900;letter-spacing:.12em;color:#536579;border-bottom:1px dashed #d7dfe8}.zone-visual div:first-child{background:linear-gradient(180deg,#eaf8fb,#fff)}.zone-visual div:last-child{border-bottom:0;background:linear-gradient(0deg,#fff4df,#fff)}.side-visual{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:8px;margin:14px 0;color:#64758a;font-size:9px;font-weight:900;letter-spacing:.08em}.side-visual svg{width:100%;height:auto}.direction-options{grid-template-columns:repeat(2,1fr)}.dir-glyph{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#edf4f8;color:var(--teal);margin-right:8px}.route-diagram{display:grid;grid-template-columns:74px minmax(0,1fr) 74px;align-items:center;gap:8px;margin:18px 0;padding:14px;border-radius:19px;background:linear-gradient(145deg,#eef7fb,#fff9e9);border:1px solid #d6e2ea}.route-node{height:72px;border-radius:18px;background:#0b2a4a;color:#fff;display:grid;place-content:center;text-align:center}.route-node.destination{background:#19855b}.route-node b{font-size:22px}.route-node span{font-size:9px;text-transform:uppercase;letter-spacing:.08em}.route-steps{text-align:center;min-width:0}.route-steps i{display:block;height:3px;background:linear-gradient(90deg,var(--navy),var(--green));position:relative;margin-bottom:7px}.route-steps i:after{content:"";position:absolute;right:-1px;top:-4px;border-left:8px solid var(--green);border-top:5px solid transparent;border-bottom:5px solid transparent}.route-steps strong,.route-steps span{display:block;font-size:9px;letter-spacing:.06em}.route-steps span{color:var(--muted);margin-top:3px}.question-actions:has(:only-child) button{flex-basis:100%}.feedback-map{max-width:250px;margin:16px auto;background:#f0f5f8;border:1px solid var(--line);border-radius:18px;padding:6px}.feedback-map svg{width:100%;max-height:235px}.feedback-map>span{display:block;font-size:10px;color:var(--muted);padding:4px 6px 6px}.feedback-actions{margin-top:20px}.quick-result{display:flex;justify-content:space-between;gap:12px;margin-top:14px;padding:12px;border-radius:14px;font-size:12px}.quick-result.ok{background:#e9f8f1;color:#176b4b}.quick-result.no{background:#fff1ec;color:#9f4734}.expert-actions{display:grid;gap:10px}.mini-deck{max-width:270px;margin:10px auto}.mini-deck svg{width:100%;max-height:300px}.progress-chapters{padding:4px 16px}.progress-hero>div:last-child{min-width:0}.progress-hero>div:last-child>b{font-size:20px}

@media(max-width:390px){.deck-explorer-grid{grid-template-columns:72px minmax(0,1fr);gap:7px}.elevation{padding:8px 6px}.elevation-deck{min-height:24px}.deck-layout{padding:5px}.deck-explorer-grid .deck-layout svg{max-height:420px}.deck-tap{grid-template-columns:1fr 1fr}.route-diagram{grid-template-columns:64px minmax(0,1fr) 64px;padding:10px}.route-node{height:64px}.page-title{font-size:30px}}
@media(min-width:650px){.deck-explorer-grid{grid-template-columns:105px minmax(0,1fr)}.venue-map-reward{height:390px}.challenge-map .deck-layout{max-width:360px}}
.quick-deck-strip{display:flex;gap:7px;flex-wrap:wrap;margin:14px 0}.quick-deck-strip span{padding:7px 9px;border-radius:10px;background:#edf3f7;border:1px solid var(--line);font-size:11px;font-weight:800;color:var(--navy)}