:root{--ink:#1c1b19;--mute:#5b5850;--bg:#fbf9f4;--card:#fff;--line:#d8d2c3;--green:#17633f;--greenbg:#e6f3ea;--onGreen:#fff;--gold:#8a5a00;--goldbg:#fff3d4;--bad:#a12a1c;--badbg:#fdeceb;--focus:#0b57d0}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--ink:#f1eee6;--mute:#b9b4a6;--bg:#171715;--card:#22221f;--line:#3d3b35;--green:#5fcf8f;--greenbg:#173324;--onGreen:#0d1f15;--gold:#f0c060;--goldbg:#33290f;--bad:#ff9d8f;--badbg:#3a1c18;--focus:#8ab4f8}}
*{box-sizing:border-box}
html{font-size:112.5%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.5}
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
.top{background:var(--card);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;gap:12px;align-items:baseline;justify-content:space-between;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
.brand{font-weight:700;font-size:1.15rem}.tag{color:var(--mute)}
h1{font-size:1.9rem;line-height:1.2;margin:1.1rem 0 .3rem}
h2{font-size:1.25rem;margin:0 0 .6rem;display:flex;gap:.55rem;align-items:center}
.lead{color:var(--mute);margin:0 0 1rem}
.num{display:inline-flex;width:2rem;height:2rem;border-radius:50%;background:var(--green);color:var(--onGreen);align-items:center;justify-content:center;font-size:1rem;flex:none}
.step,.answer,.notes{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin:0 0 14px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
button,input,select{font:inherit;color:inherit}
input[type=text],input:not([type]),select{width:100%;min-height:52px;padding:10px 12px;border:2px solid var(--line);border-radius:10px;background:var(--bg);margin-top:4px}
input:focus,select:focus{border-color:var(--focus)}
label{display:block;font-weight:600}
.hint,.echo,.small{font-weight:400;font-size:.9rem;color:var(--mute)}
.echo{display:block;min-height:1.3em;margin-top:2px}
.echo.err{color:var(--bad)}
.tabs{display:flex;gap:8px;margin:0 0 12px}
.tabs button{flex:1;min-height:52px;border:2px solid var(--line);background:var(--bg);border-radius:10px;font-weight:700;cursor:pointer}
.tabs button[aria-pressed=true]{background:var(--green);color:var(--onGreen);border-color:var(--green)}
.betgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.betbtn{min-height:56px;border:2px solid var(--line);background:var(--bg);border-radius:10px;font-weight:600;cursor:pointer;padding:6px 8px}
.betbtn[aria-pressed=true]{border-color:var(--green);background:var(--greenbg);box-shadow:inset 0 0 0 2px var(--green)}
.blurb{margin:.8rem 0 0;font-size:1.02rem}
.stepper{display:flex;align-items:center;gap:12px;margin-top:10px}
.stepper button{width:56px;min-height:52px;border:2px solid var(--line);background:var(--bg);border-radius:10px;font-size:1.5rem;cursor:pointer}
.stepper b{font-size:1.4rem;min-width:2ch;text-align:center}
.row{border:1px solid var(--line);border-radius:12px;padding:12px;margin:0 0 12px;background:var(--bg)}
.rowhead{display:flex;gap:10px;align-items:center;margin-bottom:8px}
.rn{display:inline-flex;width:2.2rem;height:2.2rem;border-radius:50%;background:var(--ink);color:var(--bg);align-items:center;justify-content:center;font-weight:700;flex:none}
.rowhead input{margin:0}
.f{margin-bottom:8px}
fieldset.res{border:0;margin:0 0 8px;padding:0}
fieldset.res legend{font-weight:600;padding:0 0 4px}
.seg{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.seg label{position:relative;font-weight:600;margin:0}
.seg input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer}
.seg span{display:flex;align-items:center;justify-content:center;text-align:center;min-height:52px;border:2px solid var(--line);border-radius:10px;background:var(--card);padding:4px;font-size:.95rem;line-height:1.2}
.seg input:checked+span{background:var(--green);border-color:var(--green);color:var(--onGreen)}
.seg input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{min-height:46px;border:2px dashed var(--line);background:transparent;border-radius:999px;padding:4px 14px;cursor:pointer;font-weight:600}
.chip[aria-expanded=true]{border-style:solid;border-color:var(--green);background:var(--greenbg)}
.xp{margin-top:10px;padding:10px;border-radius:10px;background:var(--card);border:1px solid var(--line)}
.xp[hidden],[hidden]{display:none!important}
.check{display:flex;gap:12px;align-items:flex-start;margin:14px 0 8px;cursor:pointer}
.check input{width:28px;height:28px;margin:2px 0 0;flex:none}
.answer{border:2px solid var(--green)}
.answer h2{margin-bottom:.4rem}
.big{font-size:2.1rem;font-weight:800;line-height:1.15;margin:.1rem 0}
.profit{font-size:1.2rem;font-weight:700}.profit.win{color:var(--green)}.profit.loss{color:var(--bad)}
.kv{display:flex;flex-wrap:wrap;justify-content:space-between;gap:2px 12px;padding:7px 0;border-top:1px solid var(--line)}
.kv span:last-child{font-weight:700;text-align:right;margin-left:auto}
.why{margin:.7rem 0 0;padding:10px 12px;border-radius:10px;background:var(--greenbg)}
.warn{padding:10px 12px;border-radius:10px;background:var(--goldbg);color:var(--ink)}
.bad{padding:10px 12px;border-radius:10px;background:var(--badbg)}
details.lines{margin:0 0 14px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:10px 16px}
details summary{cursor:pointer;font-weight:700;min-height:44px;display:flex;align-items:center}
table{width:100%;border-collapse:collapse;font-size:.95rem}
th,td{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line)}
td.r,th.r{text-align:right}
tr.pays td{font-weight:700}
.notes h2{display:block}
.notes ul{padding-left:1.2rem}
.reset{background:none;border:0;color:var(--focus);text-decoration:underline;cursor:pointer;padding:10px 0;min-height:44px}
footer{border-top:1px solid var(--line);margin-top:20px;padding:16px 0 40px;color:var(--mute);font-size:.9rem}
a{color:var(--focus)}
@media (max-width:480px){html{font-size:106%}.seg{grid-template-columns:repeat(2,1fr)}.big{font-size:1.9rem}}
@media print{.top,.tabs,.betgrid,.chips,.reset,footer{display:none}.step,.answer{border:1px solid #000}}

.bar{position:fixed;left:0;right:0;bottom:0;z-index:5;background:var(--green);color:var(--onGreen);padding:10px 16px;font-weight:700;display:flex;justify-content:space-between;gap:12px;box-shadow:0 -2px 8px rgba(0,0,0,.2)}
@media (max-width:700px){body{padding-bottom:64px}}
@media (min-width:701px){.bar{display:none!important}}

/* header with navigation, tools and "Keep this handy" */
.top .wrap{align-items:center}
.brand{color:var(--ink);text-decoration:none}
.top nav{display:flex;gap:4px 14px;flex-wrap:wrap}
.top nav a{color:var(--ink);text-decoration:none;font-weight:600;padding:8px 2px;border-bottom:3px solid transparent;min-height:44px;display:inline-flex;align-items:center}
.top nav a[aria-current=page]{border-bottom-color:var(--green)}
.top nav a:hover{border-bottom-color:var(--line)}
.tools{display:flex;gap:8px;align-items:center}
.tbtn{min-width:46px;min-height:46px;border:2px solid var(--line);background:var(--bg);border-radius:10px;font-weight:700;cursor:pointer;padding:4px 10px}
.tbtn.wide{padding:4px 18px}
.keep{min-height:46px;border:2px solid var(--green);background:var(--green);color:var(--onGreen);border-radius:10px;font-weight:700;cursor:pointer;padding:4px 14px}
.keep.big{font-size:1.1rem;min-height:52px}
.keeppanel{background:var(--greenbg);border-bottom:2px solid var(--green);padding:14px 0}
.keeppanel h3{margin:.4rem 0 .2rem;font-size:1.1rem}
.keeppanel ol{margin:.2rem 0 .6rem;padding-left:1.3rem}
.keeppanel .lead2{margin:0 0 .4rem;font-weight:600}
.keeppanel details{margin:.4rem 0}
.bar-pic{display:block;width:100%;max-width:520px;height:auto;margin:.3rem 0 .7rem;color:var(--ink)}
.ico{vertical-align:-.3em;margin:0 .1em;color:var(--ink)}
@media (max-width:640px){.top .wrap{gap:6px}.top nav{order:3;width:100%}}

/* buttons used for sharing */
.btnrow{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 10px}
.act{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:6px 16px;border:2px solid var(--green);background:var(--card);color:var(--ink);border-radius:10px;font-weight:700;cursor:pointer;text-decoration:none;font-size:1rem}
.act:hover{background:var(--greenbg)}
.act.ghost{border-color:var(--line)}

/* pages other than the calculator */
.article h1{margin-top:1.1rem}
.article h2{display:block;margin:1.4rem 0 .5rem}
.article p,.article li{max-width:60ch}
.article table{margin:.6rem 0 1rem}
.article td a{font-weight:700}
.tool{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin:0 0 14px}
.result{margin-top:12px;padding:12px;border-radius:10px;background:var(--greenbg)}
.result b{font-size:1.15rem}
.links a{white-space:nowrap}
.cta{display:inline-flex;align-items:center;min-height:52px;padding:8px 18px;background:var(--green);color:var(--onGreen);border-radius:10px;font-weight:700;text-decoration:none;margin:.4rem 0}
.example{border-left:4px solid var(--green);padding:6px 14px;background:var(--card);margin:.8rem 0;border-radius:0 10px 10px 0}
@media print{.top,.keeppanel,#sharebox,#paycheck,#whobox,.bar,details.lines,.notes{display:none!important}}

/* name box and printed slip heading */
.welcome{margin:0 0 10px;font-weight:600}
.reset.inline{display:inline;padding:0 4px;min-height:0}
.slip{display:none}
@media print{.slip{display:block;font-size:1.5rem;font-weight:700;margin:0 0 .5rem}.slip:empty{display:none}h1,.lead,#bets,.tabs,.blurb{display:none}}
@media (max-width:480px){.article table{font-size:.82rem}.article th,.article td{padding:5px 4px}}