:root{color-scheme:dark;--bg:#0b1422;--panel:#142338;--line:#334963;--ink:#edf3fa;--muted:#b0c1d3;--gold:#ffd17a;--blue:#83c8ff;--red:#ffb0a0}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 system-ui,-apple-system,Segoe UI,sans-serif}button,input,textarea{font:inherit}button{border:1px solid var(--line);border-radius:9px;padding:10px 15px;background:#1b3049;color:var(--ink);cursor:pointer;min-height:44px;touch-action:manipulation}button:hover{border-color:var(--gold)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--gold);outline-offset:3px}button:disabled{cursor:default;opacity:.75}button[hidden]{display:none}a{color:var(--gold)}.primary{background:var(--gold);border-color:var(--gold);color:#182132;font-weight:800}.mast{max-width:1040px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px;border-bottom:1px solid var(--line)}.brand{text-decoration:none;font-size:13px;font-weight:850;letter-spacing:.1em}.flag-mark{color:var(--gold);font-size:25px;margin-right:8px}.badge,.eyebrow{font-size:11px;letter-spacing:.16em;color:var(--gold);font-weight:750}.badge{color:var(--muted)}.hero{max-width:900px;margin:24px auto;padding:0 16px;text-align:center}h1{font-size:clamp(26px,5vw,42px);line-height:1.15;letter-spacing:-.035em;margin:8px 0}h2{line-height:1.25;margin-top:2em}h3{line-height:1.4}.lede{margin:12px 0 20px;color:var(--muted)}.stage{position:relative;width:100%;height:700px;max-height:85svh;min-height:520px;background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden}.stage iframe{display:block;width:100%;height:100%;border:0}.cover,.loader{position:absolute;inset:0;align-items:center;justify-content:center;flex-direction:column;padding:18px}.cover{display:flex;background:radial-gradient(ellipse at 50% 35%,#294664 0,#142338 65%)}.cover-board{display:grid;grid-template-columns:repeat(6,1fr);width:min(100%,330px);gap:5px;transform:rotate(-5deg);margin:20px 0 35px}.cover-board span{display:grid;place-items:center;aspect-ratio:1;border:1px solid #47617c;border-radius:6px;background:#1d354e;color:var(--blue);font-size:24px;font-weight:800}.cover-board span:nth-child(-n+6){color:var(--red);background:#3e2d35}.cover-label{font-size:12px;letter-spacing:.14em}.loader{display:none;background:var(--panel);gap:20px}.stage[data-gf-state=loading] .cover,.stage[data-gf-state=playing] .cover{display:none}.stage[data-gf-state=loading] .loader{display:flex}.stage[data-gf-state=playing] .loader{display:none}.march{display:flex;gap:10px}.march i{display:block;width:22px;height:30px;background:var(--gold);border-radius:5px;animation:march 900ms ease-in-out infinite alternate}.march i:nth-child(2){animation-delay:150ms}.march i:nth-child(3){animation-delay:300ms}@keyframes march{to{transform:translateY(-14px);opacity:.5}}.actions{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;padding:14px 0}.actions [aria-pressed=true]{color:var(--gold);border-color:var(--gold)}.reading{max-width:740px;margin:38px auto;padding:0 20px;overflow-wrap:anywhere}.reading p,.reading li{color:#cbd8e6}.reading table{width:100%;border-collapse:collapse;font-size:14px}.reading th,.reading td{padding:9px;border-bottom:1px solid var(--line);text-align:left}label{display:block;margin:12px 0}input,textarea{display:block;width:100%;border:1px solid var(--line);border-radius:7px;background:var(--panel);color:var(--ink);padding:10px}footer{max-width:900px;margin:40px auto 0;padding:28px 20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}.small{font-size:12px;color:var(--muted);line-height:1.5}.note{border-bottom:1px solid var(--line);padding:14px 0}.note time{font-size:12px;margin-left:10px}.empty{display:none}[data-gf-empty] .empty{display:block}.game-shell{background:#0e1c2d}.game-shell #hfp-app{width:100%;max-width:620px;margin:auto;padding:14px}.game-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.game-head h1{font-size:23px}.game-head .eyebrow{margin:0}.status{border-left:3px solid var(--gold);background:var(--panel);padding:9px 12px;min-height:48px;margin:12px 0}.toolbar{display:flex;gap:6px;flex-wrap:wrap}.toolbar button{padding:8px 12px;font-size:13px}.board{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:5px;width:min(100%,460px);margin:14px auto;padding:6px;border:1px solid var(--line);border-radius:12px;background:#08111d}.cell{position:relative;aspect-ratio:1;min-height:0;padding:0;border-radius:6px;border:1px solid #2a415c;font-size:clamp(19px,5vw,29px);font-weight:800;line-height:1}.cell.light{background:#192b42}.cell.dark{background:#15253a}.cell.human{background:#143f5b;color:var(--blue);border-color:#4b83ac}.cell.ai{background:#4a303b;color:var(--red);border-color:#9f6570}.cell:disabled{opacity:1}.cell.selected{outline:3px solid var(--gold);outline-offset:-3px}.cell.target{box-shadow:inset 0 0 0 3px #89e0b5}.cell.target:after{content:'';position:absolute;bottom:4px;left:calc(50% - 3px);width:6px;height:6px;border-radius:50%;background:#89e0b5}.cell small{position:absolute;font-size:10px;right:3px;top:3px;color:var(--gold)}.legend{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;font-size:11px;color:var(--muted)}.human-dot{color:var(--blue)}.ai-dot{color:var(--red)}.game-help{border-top:1px solid var(--line);padding:10px 0;font-size:13px}.game-help summary{cursor:pointer;min-height:28px}.game-help p{color:var(--muted)}#battle-log{padding-left:24px;max-height:200px;overflow:auto}#selftest{overflow-wrap:anywhere}@media(max-width:520px){.mast{padding:12px 14px}.badge{display:none}.hero{margin-top:18px;padding:0 10px}.lede{font-size:14px}.stage{height:690px;min-height:570px;max-height:none;border-radius:12px}.cover-board{max-width:270px}.game-shell #hfp-app{padding:10px}.game-head h1{font-size:20px}.game-head button{font-size:12px;padding:8px}.board{gap:4px}.status{font-size:13px}.reading{padding:0 16px}}@media(prefers-reduced-motion:reduce){.march i{animation:none}.cover-board{transform:none}}

/* Hidden Flag Play: field, field manual, field notes. */
.site-shell{--bg:#0b151c;--panel:#12212b;--line:#2b3b43;--ink:#f1f0e8;--muted:#9cacb6;--gold:#e9b85e;background:var(--bg);font-family:Arial,Helvetica,sans-serif;line-height:1.65;color:var(--ink)}
.site-shell a{color:inherit;text-underline-offset:5px}.site-shell button{font-family:inherit;border-radius:4px;background:transparent}.site-shell h1,.site-shell h2,.site-shell h3{font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:-.035em}.site-shell h2{font-size:clamp(28px,3vw,40px);line-height:1.15;margin:0 0 20px}.site-shell h3{font-size:23px;line-height:1.2;margin:0 0 12px}.site-shell p{margin:0 0 18px}.site-shell .kicker{font:600 10px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.15em;color:var(--gold);margin:0 0 20px}.skip-link{position:fixed;top:-100px;left:12px;z-index:20;padding:10px 18px;background:var(--gold);color:#101d26!important}.skip-link:focus{top:10px}
.site-header{max-width:1280px;margin:auto;min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 40px;border-bottom:1px solid var(--line)}.site-brand{display:flex;align-items:center;gap:12px;text-decoration:none;font:800 12px/1.3 Arial,sans-serif;letter-spacing:.13em}.brand-second{display:block}.brand-icon{font-size:32px;color:var(--gold);line-height:1}.site-header nav{display:flex;gap:32px;font-size:12px}.site-header nav a{text-decoration:none;color:#d0d8dc}.site-header nav a:hover{color:var(--gold)}
.hero-grid{max-width:1280px;padding:44px 40px 0;margin:auto;display:grid;grid-template-columns:minmax(270px,.78fr) minmax(0,1.22fr);gap:60px;align-items:center;scroll-margin-top:16px}.hero-copy .kicker{display:flex;align-items:center;gap:9px}.hero-copy .kicker span{display:inline-block;width:5px;height:5px;background:var(--gold)}.hero-copy h1{font-size:clamp(38px,4.3vw,60px);line-height:1.08;margin:0 0 24px;max-width:480px}.hero-copy h1 em{display:block;font-style:normal;color:var(--gold)}.hero-description{font-size:17px;color:#c9d4da;line-height:1.55}.game-specs{display:flex;gap:0;flex-wrap:wrap;font:11px/1.8 ui-monospace,monospace;color:#bdcbd2}.game-specs span+span:before{content:'·';padding:0 10px;color:var(--gold)}.independent{font-size:11px;color:#9eafb9;line-height:1.6}.hero-copy .independent{max-width:280px;margin-top:16px}.text-link{display:inline-flex;align-items:center;gap:24px;color:var(--gold)!important;font-size:13px;text-decoration:none;border-bottom:1px solid #72613e;padding:6px 0}.text-link span{margin-left:auto}.hero-guide{margin-top:20px}.hero-coordinates{color:#5b727c;font:11px ui-monospace,monospace;letter-spacing:.8em;display:flex;justify-content:space-between;margin-top:54px;padding-top:16px;border-top:1px solid var(--line)}.hero-coordinates span{letter-spacing:.1em}
.player-wrap{min-width:0}.field-bar{border:1px solid var(--line);border-bottom:0;background:#162630;display:flex;justify-content:space-between;gap:10px;padding:12px 16px;font:9px ui-monospace,monospace;letter-spacing:.1em;color:#aebfc7}.field-bar i{display:inline-block;width:5px;height:5px;background:var(--gold);margin-right:6px}.field-bar b{color:var(--gold);font-weight:400}.site-shell .stage{height:560px;min-height:0;max-height:none;border-radius:0;border:1px solid var(--line);background:#101e28}.site-shell .cover{padding:0;display:block;background:radial-gradient(ellipse at 70% 40%,#233a45,#101e28 76%)}.board-cover{position:absolute;width:min(84%,440px);height:auto;aspect-ratio:1;object-fit:contain;top:40px;left:50%;transform:translateX(-50%) rotate(-5deg);opacity:.85;filter:drop-shadow(0 20px 20px #0006)}.cover-shade{position:absolute;inset:0;background:linear-gradient(180deg,#0c192300 25%,#0c19234d 40%,#0c1923ed 82%)}.cover-action{position:absolute;left:12px;right:12px;bottom:45px;text-align:center}.field-caption{display:block;font:10px ui-monospace,monospace;letter-spacing:.17em;color:#d0dce3;margin-bottom:18px}.site-shell .play-button{display:inline-flex;align-items:center;gap:15px;background:var(--gold);border:1px solid var(--gold);color:#15222a;padding:17px 22px;font-size:15px;font-weight:700;box-shadow:0 6px 32px #0004;border-radius:3px;min-height:56px}.play-button:hover{background:#f6cc80}.play-triangle{font-size:12px}.cover-action p{font:10px ui-monospace,monospace;margin:13px 0 0;color:#b6c6ce}.cover-corner{position:absolute;left:18px;top:18px;font:9px/1.6 ui-monospace,monospace;color:#8fa5b0;letter-spacing:.13em}.site-shell .loader{background:#142630;color:var(--ink);gap:12px}.loader strong{font-family:Georgia,serif;font-weight:400;font-size:24px}.loader>span{font-size:12px;color:var(--muted)}.site-shell .march{margin-bottom:24px}.site-shell .march i{background:var(--gold)}.player-tools{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:7px 0;border-bottom:1px solid var(--line);gap:0}.player-tools button,.player-tools a{border:0;padding:8px 10px;font:12px/1.6 Arial,sans-serif;text-decoration:none;color:#bacad2;min-height:44px;display:inline-flex;align-items:center;gap:6px}.player-tools button[aria-pressed=true]{color:var(--gold)}.player-tools [data-gf-share-msg]{font-size:11px;color:var(--gold);width:100%;text-align:right}
.section{max-width:1200px;margin:0 auto;padding:76px 0;border-bottom:1px solid var(--line);scroll-margin-top:24px}.section-heading{display:flex;justify-content:space-between;gap:28px;align-items:end;margin-bottom:32px}.section-heading h2{margin-bottom:0}.section-heading>p{font-size:12px;color:var(--muted);margin-bottom:0;max-width:320px}.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin:0;padding:0}.steps li{border-top:1px solid var(--line);border-right:1px solid var(--line);padding:24px 24px 8px}.steps li:first-child{padding-left:0}.steps li:last-child{border-right:0}.step-number{display:block;color:var(--gold);font:12px ui-monospace,monospace;margin-bottom:26px}.steps p{font-size:13px;color:#aabdc7}.control-strip{display:flex;gap:28px;padding-top:25px;border-top:1px solid var(--line);font-size:11px;color:#aabdc7}.control-strip span{flex:1}.control-strip b{display:block;color:#e1e6e7;margin-bottom:4px;font-weight:500}
.comparison-band{display:grid;grid-template-columns:1fr 1.25fr;gap:90px;background:#12232d;margin-top:60px;padding:45px;border:1px solid #35454b}.comparison-band h2{max-width:330px}.comparison-band p:not(.kicker){font-size:14px;color:#b8c9d0}.comparison-band .text-link{line-height:1.7}.piece-grid{display:grid;grid-template-columns:repeat(7,1fr);border:1px solid var(--line)}.piece-card{padding:20px 15px 14px;border-right:1px solid var(--line);min-width:0}.piece-card:last-child{border:0}.piece-symbol{display:grid;place-items:center;width:44px;height:52px;border:1px solid #4b83ac;color:#a3d8f5;background:#15364b;border-radius:4px;font:700 25px Arial;margin-bottom:16px;box-shadow:0 4px 0 #07121b}.piece-count{font:9px ui-monospace,monospace;color:var(--gold);text-transform:uppercase}.piece-card h3{font-size:19px;margin:7px 0 9px}.piece-card p{font-size:11px;line-height:1.7;color:#aebfc7;margin:0}.rule-panels{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;margin-top:40px}.move-panel{display:flex;gap:32px;align-items:center}.rule-panels p{font-size:13px;color:#aebfc7}.movement-diagram{display:grid;grid-template-columns:repeat(3,38px);gap:3px;flex-shrink:0}.movement-diagram span{height:38px;display:grid;place-items:center;color:#546870;background:#14232d}.movement-diagram span:nth-child(even){color:var(--gold)}.movement-diagram .diagram-piece{border:1px solid #4b83ac;background:#15364b;color:#a3d8f5;font-weight:bold}.combat-row{display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);padding:10px 0}.combat-row>span{display:flex;gap:10px;align-items:center;flex-shrink:0}.combat-row i{font:9px ui-monospace,monospace;color:var(--muted)}.mini-piece{display:inline-grid;place-items:center;width:26px;height:30px;background:#15364b;border:1px solid #4b83ac;color:#a3d8f5;font:700 15px Arial;border-radius:3px}.mini-piece.enemy{background:#4a303b;border-color:#9f6570;color:#ffb0a0}.combat-row p{font-size:11px;margin:0}.rule-note{font-size:12px;color:#aebfc7;border-left:2px solid var(--gold);padding-left:18px;margin-top:30px!important;margin-bottom:0!important}.rule-note b{color:#e0e5e5;font-weight:500}
.save-section{display:grid;grid-template-columns:1fr 1fr;gap:100px}.save-section p{font-size:14px;color:#aebfc7}.save-notes p{border-bottom:1px solid var(--line);padding-bottom:17px}.save-notes p:last-child{border:0;margin-bottom:0;padding-bottom:0}.save-notes b{color:var(--ink);font-weight:500}.save-notes a{color:var(--gold)}.faq-section{display:grid;grid-template-columns:1fr 1.3fr;gap:100px}.faq-section>div>p:not(.kicker){font-size:14px;color:var(--muted)}.faq-list details{border-bottom:1px solid var(--line);padding:0}.faq-list details:first-child{border-top:1px solid var(--line)}.faq-list summary{font-size:14px;list-style:none;display:flex;justify-content:space-between;gap:15px;padding:19px 0;cursor:pointer}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary span{color:var(--gold);font-size:20px;line-height:1}.faq-list details[open] summary span{transform:rotate(45deg)}.faq-list details p{font-size:13px;color:#b4c5ce;padding-right:20px}.notes-section{display:grid;grid-template-columns:1fr 1.3fr;gap:100px}.notes-section>div>p{font-size:14px;color:#aebfc7}.site-shell label{font-size:12px;color:#dce3e6;margin:0 0 8px}.site-shell label span{color:var(--muted)}.site-shell input,.site-shell textarea{border-radius:3px;background:#101f29;border-color:var(--line);font-size:14px;margin-bottom:20px;padding:12px 14px}.site-shell input::placeholder,.site-shell textarea::placeholder{color:#718992}.form-actions{display:flex;gap:12px;align-items:center}.site-shell .button-gold{border-radius:3px;background:var(--gold);color:#15222a;border:1px solid var(--gold);padding:12px 20px;font:bold 12px/1.6 Arial,sans-serif;text-decoration:none}.button-gold span{padding-left:20px}.inline-button{display:inline-flex;align-items:center;margin-top:24px}.site-shell .fineprint{font-size:11px!important;color:#8ea2ad!important}.site-shell [data-gf-comment-msg]{font-size:12px;color:var(--gold)}.site-shell [data-gf-reply-cancel]{display:none}[data-gf-comment-form][data-gf-replying] [data-gf-reply-cancel]{display:inline-block}.site-shell [data-gf-reply-to]{font-size:12px}.site-shell .note{font-size:13px}.site-shell .empty{font-size:12px;color:var(--muted)}
.site-footer{max-width:1200px;padding:45px 0 22px;margin:0 auto;border:0;display:grid;grid-template-columns:1fr 1fr;gap:30px;font-size:12px}.site-footer .site-brand{font-size:11px;margin-bottom:18px}.site-footer p{color:#a7b9c3;max-width:390px}.site-footer nav{display:grid;grid-template-columns:1fr 1fr;align-content:start;gap:15px 25px;font-size:12px}.site-footer nav a{text-decoration:none}.site-footer nav a:last-child{grid-column:1/-1;color:var(--gold)}.footer-bottom{grid-column:1/-1;border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;font-size:10px;color:#8197a2}.site-shell .hfp-analytics-settings{grid-column:1/-1;justify-self:start;font-size:11px;padding:6px 12px;margin:0}.site-shell .hfp-analytics{font-size:12px;padding:10px 24px;background:#172a34;border-color:var(--line);gap:12px}.site-shell .hfp-analytics p{margin:0;max-width:760px}.site-shell .hfp-analytics button{font-size:11px;min-height:40px;padding:7px 13px}
.document-page{max-width:800px;margin:60px auto 80px;padding:0 24px}.document-page h1{font-size:clamp(34px,5vw,52px);margin:12px 0 18px}.document-date{font:11px/1.6 ui-monospace,monospace;color:#8fa5b0;margin-bottom:35px!important}.prose{color:#b9c8ce;font-size:15px}.prose h2{color:var(--ink);font-size:28px;margin:44px 0 17px}.prose a{color:var(--gold)}.guide-intro{max-width:1200px;margin:0 auto;padding:40px 0 46px;border-bottom:1px solid var(--line)}.breadcrumbs{font-size:11px;color:#9fb3be;display:flex;gap:12px;margin-bottom:42px}.guide-intro h1{max-width:850px;font-size:clamp(38px,5vw,65px);line-height:1.1;margin:0 0 24px}.guide-lead{font-size:18px;color:#bcccd4}.guide-intro .document-date{margin-bottom:15px!important}.guide-intro .independent{margin:0}.guide-layout{max-width:1200px;display:grid;grid-template-columns:230px minmax(0,1fr);gap:70px;margin:0 auto;padding:55px 0 70px}.guide-toc{align-self:start;position:sticky;top:25px}.guide-toc nav{display:flex;flex-direction:column;gap:16px;font-size:12px;color:#afc1ca}.guide-toc a{text-decoration:none}.guide-content{min-width:0;max-width:780px;color:#b9cbd3;font-size:15px}.guide-content section{scroll-margin-top:30px;margin-bottom:52px}.guide-content h2{font-size:33px;color:var(--ink);margin-top:0}.guide-content h3{font-size:24px;color:var(--ink)}.guide-content a{color:var(--gold)}.guide-content ul,.guide-content ol{padding-left:22px}.guide-content li{margin-bottom:10px}.guide-note{border-left:2px solid var(--gold);background:#14252f;padding:18px 22px;font-size:13px}.guide-content table{width:100%;border-collapse:collapse;font-size:12px}.guide-content th,.guide-content td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.guide-content th{background:#162832;color:var(--ink);font-weight:500}.guide-content td:first-child{color:var(--ink);width:25%}.guide-content figure{margin:28px 0;padding:24px;background:#11202a;border:1px solid var(--line)}.guide-content figure img{display:block;width:min(100%,380px);height:auto;margin:auto}.guide-content figcaption{font-size:11px;color:var(--muted);margin-top:18px}.play-options{display:grid;grid-template-columns:1fr 1fr;gap:25px}.play-options>div{border-top:1px solid var(--gold);padding-top:20px}.guide-cta{padding:30px;background:#192c35;border:1px solid #566052}.guide-cta .button-gold{color:#15222a}.sources-list{font-size:13px}
[data-gf-comments][data-gf-empty]::after{content:'No field notes yet. Leave a question or a useful observation.';display:block;font-size:12px;color:var(--muted);margin-top:20px}.site-shell [data-gf-comments]>.empty{display:none}
/* Presentation only: the game rules and save code are unchanged. */
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