:root{--felt-900:#0a1f17;--felt-800:#0d2a1e;--felt-700:#114030;--felt-600:#15543e;--surface-900:#0b1411;--surface-800:#11201a;--surface-700:#16291f;--surface-600:#1d3327;--line:#244236;--line-soft:#1a3329;--ink-100:#f2f7f4;--ink-200:#cfe0d7;--ink-300:#9fb6aa;--ink-400:#6f8a7d;--ink-500:#51685d;--gold:#e9b949;--gold-soft:#c79a37;--chip-red:#d6453f;--chip-blue:#3f7fd6;--chip-green:#3fae6b;--good:#4fbf7b;--bad:#e06a63;--warn:#e9b949;--r-sm:6px;--r-md:10px;--r-lg:16px;--shadow-1:0 1px 2px #0006;--shadow-2:0 6px 24px #00000073;--font-sans:ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:ui-monospace, "SF Mono", "Cascadia Code", Menlo, monospace;--maxw:1080px;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-family:var(--font-sans);color:var(--ink-100);background-color:var(--surface-900)}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:radial-gradient(1200px 600px at 50% -10%, var(--felt-700), transparent 60%), radial-gradient(900px 500px at 90% 110%, var(--felt-800), transparent 55%), var(--surface-900);background-attachment:fixed}a{color:var(--gold);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4{margin:0 0 .5em;font-weight:700;line-height:1.15}h1{font-size:clamp(1.8rem,4vw,2.6rem)}h2{font-size:clamp(1.3rem,3vw,1.7rem)}p{color:var(--ink-200);line-height:1.6}code,.mono{font-family:var(--font-mono)}button{font-family:inherit}.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}.card{background:linear-gradient(180deg, var(--surface-700), var(--surface-800));border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-2);padding:22px}.btn{border:1px solid var(--line);background:var(--surface-600);color:var(--ink-100);border-radius:var(--r-md);cursor:pointer;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-size:.95rem;font-weight:600;transition:transform 60ms,background 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var(--line))}.muted{color:var(--ink-400)}.small{font-size:.85rem}.center{text-align:center}.grid{gap:16px;display:grid}.stack{flex-direction:column;gap:12px;display:flex}.row{align-items:center;gap:12px;display:flex}.wrap{flex-wrap:wrap}hr{border:none;border-top:1px solid var(--line-soft);margin:18px 0}table{border-collapse:collapse;width:100%}th,td{text-align:left;border-bottom:1px solid var(--line-soft);padding:10px 12px}th{color:var(--ink-300);text-transform:uppercase;letter-spacing:.03em;font-size:.8rem}:focus-visible{outline:2px solid var(--gold);outline-offset:2px}.lessons-layout{grid-template-columns:220px minmax(0,1fr);align-items:start;gap:16px;display:grid}.lessons-layout>.lesson{min-width:0;overflow-x:auto}.lessons-nav{position:sticky;top:80px}@media (width<=720px){.lessons-layout{grid-template-columns:minmax(0,1fr)}.lessons-nav{position:static;top:auto}.lessons-nav .stack{flex-direction:row;gap:6px;overflow-x:auto}.lessons-nav .subnav-link{white-space:nowrap;flex:none}.stack-on-mobile{grid-template-columns:1fr!important}}.glossary{gap:10px;margin:8px 0 4px;display:grid}.glossary>div{grid-template-columns:180px 1fr;align-items:start;gap:14px;display:grid}.glossary dt{color:var(--gold);font-weight:700}.glossary dd{color:var(--ink-200);margin:0;line-height:1.6}@media (width<=720px){.glossary>div{grid-template-columns:1fr;gap:2px}}.app{flex-direction:column;min-height:100vh;display:flex}.topbar{z-index:20;background:color-mix(in srgb, var(--surface-900) 88%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);position:sticky;top:0}.topbar-inner{justify-content:space-between;align-items:center;gap:16px;height:62px;display:flex}.brand{color:var(--ink-100);align-items:center;gap:10px;display:flex}.brand:hover{text-decoration:none}.brand-mark{background:linear-gradient(180deg, var(--gold), var(--gold-soft));color:#1c1606;letter-spacing:.02em;border-radius:9px;place-items:center;width:36px;height:36px;font-size:.95rem;font-weight:900;display:inline-grid}.brand-name{flex-direction:column;font-weight:800;line-height:1.05;display:flex}.brand-sub{letter-spacing:.08em;text-transform:uppercase;color:var(--ink-400);font-size:.66rem;font-weight:600}.nav{flex-wrap:wrap;gap:4px;display:flex}.nav-link{color:var(--ink-300);border-radius:var(--r-md);padding:7px 12px;font-size:.9rem;font-weight:600}.nav-link:hover{color:var(--ink-100);background:var(--surface-700);text-decoration:none}.nav-active{color:var(--gold);background:var(--surface-700)}.main{flex:1;padding-top:28px;padding-bottom:56px}.footer{border-top:1px solid var(--line-soft);padding:20px 0}@media (width<=640px){.brand-sub{display:none}.topbar-inner{flex-direction:column;align-items:flex-start;height:auto;padding-top:10px;padding-bottom:10px}}.pcard{box-shadow:var(--shadow-1);-webkit-user-select:none;user-select:none;background:#f7f5ef;border:1px solid #d8d3c4;border-radius:8px;flex-direction:column;justify-content:space-between;padding:6px 8px;font-weight:700;display:inline-flex;position:relative}.pcard-sm{border-radius:6px;width:38px;height:54px;padding:4px 5px;font-size:.8rem}.pcard-md{width:56px;height:80px;font-size:1.05rem}.pcard-lg{width:72px;height:104px;font-size:1.4rem}.pcard-red{color:#c62828}.pcard-black{color:#1a1a1a}.pcard-suit{align-self:flex-end;font-size:1.5em;line-height:1}.pcard-rank{line-height:1}.pcard-back{background:repeating-linear-gradient(45deg,#1d3a8a,#1d3a8a 6px,#234aa3 6px 12px);border-color:#16306e}.stat{background:var(--surface-800);border:1px solid var(--line-soft);border-radius:var(--r-md);min-width:92px;padding:12px 14px}.stat-value{font-size:1.5rem;font-weight:800;font-family:var(--font-mono);color:var(--ink-100)}.stat-good{color:var(--good)}.stat-bad{color:var(--bad)}.stat-warn{color:var(--warn)}.stat-label{text-transform:uppercase;letter-spacing:.05em;color:var(--ink-400);margin-top:3px;font-size:.72rem}.feedback{border-radius:var(--r-md);border:1px solid var(--line);padding:12px 16px;font-weight:500;line-height:1.5}.feedback-correct{background:color-mix(in srgb, var(--good) 14%, transparent);border-color:color-mix(in srgb, var(--good) 50%, var(--line))}.feedback-wrong{background:color-mix(in srgb, var(--bad) 14%, transparent);border-color:color-mix(in srgb, var(--bad) 50%, var(--line))}.feedback-info{background:var(--surface-800)}.progressbar{background:var(--surface-900);border:1px solid var(--line-soft);border-radius:999px;width:100%;height:8px;overflow:hidden}.progressbar-fill{background:var(--gold);height:100%;transition:width .3s}.progressbar-good{background:var(--good)}.progressbar-warn{background:var(--warn)}.progressbar-bad{background:var(--bad)}.section-title{margin-bottom:18px}.eyebrow{text-transform:uppercase;letter-spacing:.14em;color:var(--gold);margin-bottom:6px;font-size:.74rem;font-weight:700}.quiz-option.quiz-correct{border-color:color-mix(in srgb, var(--good) 60%, var(--line));color:var(--good)}.quiz-option.quiz-wrong{border-color:color-mix(in srgb, var(--bad) 60%, var(--line));color:var(--bad)}.hero{padding:14px 0 6px}.hero-eyebrow{text-transform:uppercase;letter-spacing:.16em;color:var(--gold);margin-bottom:14px;font-size:.78rem;font-weight:700}.hero h1{max-width:18ch}.hero-lead{max-width:64ch;margin:14px 0 22px;font-size:1.05rem}.home-cards{grid-template-columns:repeat(3,1fr)}@media (width<=900px){.home-cards{grid-template-columns:1fr}}.game-card{flex-direction:column;gap:8px;display:flex}.game-tag{color:var(--gold);margin-bottom:6px;font-size:.88rem;font-weight:600}.game-meta{gap:8px;margin:8px 0 14px;display:grid}.game-meta div{border-top:1px solid var(--line-soft);justify-content:space-between;gap:12px;padding-top:8px;display:flex}.game-meta dt{color:var(--ink-400);font-size:.82rem}.game-meta dd{text-align:right;color:var(--ink-200);max-width:60%;margin:0;font-size:.82rem;font-weight:600}.start-here{border-color:color-mix(in srgb, var(--gold) 35%, var(--line))}.progress-tracks{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.progress-track{background:var(--surface-2,#ffffff05);border:1px solid var(--line-soft);border-radius:12px;padding:14px}@media (width<=640px){.progress-tracks{grid-template-columns:1fr}}.game-card-badge{margin-left:8px}.planner-fields{grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;display:grid}.field{flex-direction:column;gap:6px;display:flex}.field label{color:var(--ink-400);font-size:.82rem;font-weight:600}.field input,.field select{border:1px solid var(--line);background:var(--surface-2,#ffffff05);color:var(--ink-100);border-radius:8px;padding:9px 10px;font-size:.95rem}.field input[type=range]{accent-color:var(--gold);padding:0}.plan-range-track{background:color-mix(in srgb, var(--bad) 16%, transparent);border:1px solid var(--line-soft);border-radius:8px;height:30px;position:relative;overflow:hidden}.plan-range-band{background:color-mix(in srgb, var(--gold) 28%, transparent);border-left:1px solid color-mix(in srgb, var(--gold) 60%, var(--line));border-right:1px solid color-mix(in srgb, var(--gold) 60%, var(--line));position:absolute;top:0;bottom:0}.plan-range-expected{background:var(--gold);width:2px;position:absolute;top:-2px;bottom:-2px}.plan-range-zero{background:var(--ink-300);opacity:.6;width:1px;position:absolute;top:0;bottom:0}.plan-range-labels{justify-content:space-between;margin-top:6px;display:flex}.plan-assumptions{flex-direction:column;gap:6px;margin:0;padding-left:18px;display:flex}.subnav{background:var(--surface-800);border:1px solid var(--line-soft);border-radius:var(--r-md);flex-wrap:wrap;gap:6px;padding:6px;display:flex}.subnav-link{color:var(--ink-300);border-radius:8px;padding:7px 12px;font-size:.86rem;font-weight:600}.subnav-link:hover{color:var(--ink-100);background:var(--surface-700);text-decoration:none}.subnav-active{color:#1c1606;background:linear-gradient(180deg, var(--gold), var(--gold-soft))}.range-grid{grid-template-columns:repeat(13,1fr);gap:2px;max-width:560px;display:grid}.range-cell{aspect-ratio:1;background:var(--surface-700);color:var(--ink-400);border:1px solid #0000;border-radius:3px;place-items:center;font-size:.6rem;font-weight:700;display:grid}.range-cell.in{background:color-mix(in srgb, var(--good) 32%, var(--surface-700));color:var(--ink-100)}.range-cell.pair{outline:1px solid var(--line)}.drill-cards{align-items:center;gap:10px;display:flex}.stat-row,.choice-row{flex-wrap:wrap;gap:10px;display:flex}.choice-row .btn{flex:1;min-width:120px}.felt{background:radial-gradient(circle at 50% 42%, var(--felt-600), var(--felt-800) 72%);min-height:360px;box-shadow:inset 0 0 60px #00000080, var(--shadow-2);border:8px solid #3a2a14;border-radius:140px;padding:28px 20px;position:relative}.table-board{justify-content:center;align-items:center;gap:8px;min-height:84px;margin:14px 0;display:flex}.pot-tag{text-align:center;font-family:var(--font-mono);color:var(--gold);font-weight:700}.seats{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.seat{background:var(--surface-800);border:1px solid var(--line-soft);border-radius:var(--r-md);padding:8px 10px;font-size:.82rem}.seat-hero{border-color:var(--gold-soft);background:color-mix(in srgb, var(--gold) 8%, var(--surface-800))}.seat-folded{opacity:.4}.seat-name{justify-content:space-between;font-weight:700;display:flex}.seat-pos{color:var(--ink-400);font-size:.68rem}.seat-type{overflow-wrap:anywhere;margin-top:1px;font-size:.64rem;line-height:1.2}.seat-action{color:var(--gold);min-height:1em;font-size:.74rem;font-weight:600}.action-feed{border:1px solid var(--line-soft);border-radius:var(--r-md);background:#00000047;flex-direction:column;gap:2px;max-height:132px;margin-top:12px;padding:8px 10px;display:flex;overflow-y:auto}.feed-line{color:var(--ink-200);overflow-wrap:anywhere;line-height:1.35}.hint-box{border:1px dashed var(--gold-soft);background:color-mix(in srgb, var(--gold) 8%, transparent);border-radius:var(--r-md);padding:10px 14px}.lesson h3{color:var(--gold);margin-top:22px}.lesson ul,.lesson ol{color:var(--ink-200);line-height:1.7}.chart-table td,.chart-table th{text-align:center;padding:6px 8px;font-size:.82rem}.tag-raise{color:var(--good);font-weight:700}.tag-fold{color:var(--ink-400)}.bs-chart{border-collapse:collapse;font-size:.78rem}.bs-chart th,.bs-chart td{text-align:center;border:1px solid var(--surface-900);width:30px;height:26px;padding:0;font-weight:700}.bs-chart thead th,.bs-chart tbody th{background:var(--surface-700);color:var(--ink-300)}.bs-hit{color:#ffb3a8;background:#4a2b2b}.bs-stand{color:#b3f0c4;background:#244a30}.bs-double{color:#acf;background:#2b3d5a}.bs-split{color:#f0dca8;background:#4a3f24}.bs-surrender{color:#d8b3f0;background:#3a2b4a}.bs-key{border-radius:4px;place-items:center;width:22px;height:22px;margin-right:4px;font-weight:800;display:inline-grid}.bj-felt{background:radial-gradient(circle at 50% 30%, var(--felt-600), var(--felt-800) 75%);box-shadow:inset 0 0 50px #00000073, var(--shadow-2);border:8px solid #3a2a14;border-radius:20px;padding:22px}.bj-row{align-items:center;gap:8px;min-height:84px;display:flex}.bj-label{text-transform:uppercase;letter-spacing:.06em;color:var(--ink-300);margin-bottom:4px;font-size:.78rem}.count-flash{place-items:center;min-height:140px;display:grid}.count-card-big{transform:scale(1.3)}.ror-meter{flex-direction:column;gap:6px;display:flex}.count-tag-wrap{display:inline-block;position:relative}.count-tag{background:var(--surface-900);border:1px solid var(--line);min-width:20px;height:20px;box-shadow:var(--shadow-1);border-radius:10px;place-items:center;padding:0 4px;font-size:.72rem;font-weight:800;display:grid;position:absolute;top:-7px;right:-7px}.count-plus{color:var(--good);border-color:color-mix(in srgb, var(--good) 60%, var(--line))}.count-minus{color:var(--bad);border-color:color-mix(in srgb, var(--bad) 60%, var(--line))}.count-zero{color:var(--ink-300)}.vp-hand{flex-wrap:wrap;justify-content:center;gap:14px;padding:8px 0;display:flex}.vp-slot{cursor:pointer;background:0 0;border:none;flex-direction:column;align-items:center;gap:8px;padding:0;display:flex}.vp-slot:disabled{cursor:default}.vp-held{letter-spacing:.08em;text-transform:uppercase;background:linear-gradient(180deg, var(--gold), var(--gold-soft));color:#1c1606;border-radius:999px;padding:3px 10px;font-size:.7rem;font-weight:800}.vp-not-held{letter-spacing:.08em;text-transform:uppercase;background:var(--surface-700);color:var(--ink-300);border-radius:999px;padding:3px 10px;font-size:.7rem;font-weight:700}.vp-slot.vp-on .pcard{outline:3px solid var(--gold);outline-offset:2px}.vp-paytable{border-collapse:collapse;width:100%;font-size:.85rem}.vp-paytable td{border-bottom:1px solid var(--line-soft);padding:5px 10px}.vp-paytable td:last-child{text-align:right;font-variant-numeric:tabular-nums;font-weight:700}.vp-paytable tr.vp-hit td{color:var(--gold)}.bac-chart{background:var(--surface-800);border:1px solid var(--line-soft);border-radius:var(--r-md);width:100%;height:240px;display:block}.bac-chart-line{fill:none;stroke-width:1.5px}.bac-chart-zero{stroke:var(--line-soft);stroke-dasharray:4 4;stroke-width:1px}.bac-chart-start{stroke:var(--ink-300);stroke-dasharray:2 4;stroke-width:1px}.bac-coup{grid-template-columns:1fr 1fr;gap:18px;display:grid}.bac-side{text-align:center;border-radius:var(--r-md);border:1px solid var(--line-soft);background:var(--surface-800);padding:12px}.bac-side.bac-won{border-color:var(--gold)}.bac-side h4{text-transform:uppercase;letter-spacing:.06em;margin:0 0 8px;font-size:.78rem}.bac-cards{justify-content:center;gap:6px;display:flex}.bac-total{margin-top:8px;font-size:1.4rem;font-weight:800}.bac-field{flex-direction:column;gap:4px;display:flex}.bac-field label{color:var(--ink-300);font-size:.78rem;font-weight:700}.bac-field input,.bac-field select{background:var(--surface-800);border:1px solid var(--line-soft);color:var(--ink-100);font:inherit;border-radius:8px;padding:8px 10px}