/* Emerio: mobile first. One column on phones; wider layouts only add room. Text 18px base, 44px tap targets. */
:root{
  --ink:#1c2733; --ink-2:#44515e; --muted:#5b6774; --line:#dcd8cf; --bg:#f6f4ef; --card:#fff;
  --teal:#0f5c63; --teal-2:#0b474d; --teal-soft:#e3f0f0;
  --green:#1d6b40; --green-soft:#e4f3ea; --amber:#8a4f00; --amber-soft:#fff3dc;
  --blue:#1f4f8f; --blue-soft:#e6eefa; --grey-soft:#eeece7; --red:#9b1c1c; --red-soft:#fdeaea;
  --radius:14px; --shadow:0 1px 2px rgba(28,39,51,.06),0 4px 16px rgba(28,39,51,.05);
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --serif:Georgia,"Iowan Old Style","Times New Roman",serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 18px/1.6 var(--sans);overflow-wrap:anywhere}
a{color:var(--teal);text-underline-offset:3px}
a:hover{color:var(--teal-2)}
:focus-visible{outline:3px solid #f0a500;outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5rem;color:var(--ink)}
h1{font-size:1.85rem;letter-spacing:-.01em}
h2{font-size:1.3rem}
h3{font-size:1.1rem}
h4{font-size:1rem}
p{margin:0 0 .8rem}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:.6rem 1rem;z-index:10}
.skip:focus{left:.5rem;top:.5rem}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* header */
.top{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top-in{max-width:960px;margin:0 auto;padding:.5rem 1rem;display:flex;flex-wrap:wrap;align-items:center;gap:.25rem 1rem}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:700;font-size:1.2rem;color:var(--ink);text-decoration:none;min-height:44px}
.top nav{display:flex;flex-wrap:wrap;gap:.25rem;margin-left:auto}
.top nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 .7rem;border-radius:10px;color:var(--ink-2);text-decoration:none;font-size:.95rem}
.top nav a.here{background:var(--teal-soft);color:var(--teal-2);font-weight:600}
.top nav a.nav-cta{color:var(--teal);font-weight:600}
@media (max-width:560px){
  .top-in{padding:.4rem .75rem}
  .top nav{margin-left:0;width:100%;justify-content:space-between;flex-wrap:nowrap;gap:0}
  .top nav a{padding:0 .3rem;font-size:.82rem;white-space:nowrap}
}

main{max-width:960px;margin:0 auto;padding:1.25rem 1rem 3rem}
main:focus{outline:none}
.foot{max-width:960px;margin:0 auto;padding:1rem 1rem 2.5rem;color:var(--muted);font-size:.9rem}

/* surfaces */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.25rem;margin:0 0 1rem}
.narrow{max-width:30rem;margin:2rem auto}
.intro{margin:.5rem 0 1.25rem}
.lead{font-size:1.1rem;color:var(--ink-2)}
.hint{color:var(--muted);font-size:.92rem}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;font-weight:700;color:var(--muted);margin:0 0 .4rem}
.empty{text-align:center;padding:2rem 1.25rem}
.trouble{text-align:center;padding:2.5rem 1.25rem}

/* buttons */
.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:.6rem 1.2rem;border-radius:12px;border:1.5px solid var(--teal);background:#fff;color:var(--teal);font:600 1rem/1.2 var(--sans);text-decoration:none;cursor:pointer}
.button:hover{background:var(--teal-soft)}
.button.primary{background:var(--teal);color:#fff;border-color:var(--teal)}
.button.primary:hover{background:var(--teal-2)}
.button.big{min-height:56px;font-size:1.08rem;padding:.75rem 1.5rem}
.button.wide{width:100%}

/* flash and callouts */
.flash{border-radius:12px;padding:.85rem 1rem;margin:0 0 1rem;border:1px solid}
.flash-ok{background:var(--green-soft);border-color:#b6dcc4;color:#134a2c}
.flash-error{background:var(--red-soft);border-color:#f0bcbc;color:var(--red)}
.callout{border-radius:12px;padding:.8rem 1rem;margin:.8rem 0}
.callout.warn{background:var(--amber-soft);border:1px solid #f0d49a;color:#5e3600}
.note-box{background:var(--grey-soft);border-radius:12px;padding:1rem;margin:1rem 0;font-size:.95rem;color:var(--ink-2)}
.note-box p:last-child{margin:0}

/* forms */
.form label{display:block;font-weight:600;margin:.2rem 0 .3rem}
.form .hint{margin:-.1rem 0 .45rem}
.field{margin:0 0 1.35rem}
input[type=text],input[type=password],textarea{width:100%;font:inherit;font-size:1rem;color:var(--ink);background:#fff;border:1.5px solid #b9b4a8;border-radius:12px;padding:.7rem .85rem;min-height:48px}
textarea{resize:vertical;line-height:1.5}
input[type=text]:focus,input[type=password]:focus,textarea:focus{border-color:var(--teal);outline:3px solid rgba(15,92,99,.2);outline-offset:0}
input[type=file]{font:inherit;font-size:.95rem;width:100%;min-height:48px;padding:.5rem 0}
input[type=file]::file-selector-button{font:600 .95rem var(--sans);min-height:44px;padding:0 1rem;margin-right:.75rem;border-radius:10px;border:1.5px solid var(--teal);background:#fff;color:var(--teal);cursor:pointer}
.form input[type=password],.form input[type=text]{margin-bottom:1rem}
.drop{border:2px dashed #c9c3b6;border-radius:12px;padding:.75rem 1rem;background:#fcfbf8}
.drop.over{border-color:var(--teal);background:var(--teal-soft)}
.chosen{list-style:none;margin:.3rem 0 0;padding:0;font-size:.92rem;color:var(--ink-2)}
.chosen li{padding:.15rem 0}
.check{display:flex;gap:.75rem;align-items:flex-start;margin:1rem 0 1.25rem}
.check input{width:24px;height:24px;margin:.2rem 0 0;flex:none;accent-color:var(--teal)}
.check label{font-weight:400;margin:0;min-height:44px;flex:1;padding:.1rem 0 .4rem;cursor:pointer}
fieldset{border:0;padding:0;margin:0 0 1rem}
legend{font-weight:700;margin-bottom:.5rem}
.choice{display:flex;gap:.75rem;align-items:flex-start;border:1.5px solid var(--line);border-radius:12px;padding:.75rem .9rem;margin:0 0 .6rem;background:#fff}
.choice:has(input:checked){border-color:var(--teal);background:var(--teal-soft)}
.choice input{width:24px;height:24px;margin:.15rem 0 0;flex:none;accent-color:var(--teal)}
.choice label{margin:0;font-weight:400;flex:1;min-height:44px;cursor:pointer}
.choice label strong{display:block}
.choice label span{display:block;color:var(--ink-2);font-size:.95rem}

details>summary{cursor:pointer;min-height:44px;display:flex;align-items:center;gap:.5rem;font-weight:600;color:var(--teal);list-style:none}
details>summary::-webkit-details-marker{display:none}
details>summary::before{content:"";width:.55rem;height:.55rem;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg);transition:transform .15s;flex:none;margin-right:.2rem}
details[open]>summary::before{transform:rotate(45deg)}
details.more{border-top:1px solid var(--line);margin-top:1rem;padding-top:.25rem}
details.mini summary{font-size:.95rem;font-weight:500}
details.law summary{color:var(--muted);font-weight:400;font-size:.9rem}
.fold summary{font-size:1.05rem}

/* claim list */
.claims{list-style:none;margin:0 0 1.5rem;padding:0;display:grid;gap:.8rem}
.claim-card{display:grid;gap:.45rem;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1rem 1.1rem;text-decoration:none;color:var(--ink);min-height:44px}
.claim-card:hover{border-color:var(--teal)}
.claim-text{font-family:var(--serif);font-size:1.08rem;line-height:1.45}
.meta{color:var(--muted);font-size:.9rem}
.claims.compact .claim-card{box-shadow:none}

/* pills */
.pill{justify-self:start;display:inline-block;border-radius:999px;padding:.15rem .7rem;font-size:.82rem;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.pill-done,.pill-test{background:var(--green-soft);color:var(--green)}
.pill-running{background:var(--blue-soft);color:var(--blue)}
.pill-waiting,.pill-not_reached,.pill-not_run,.pill-not_built{background:var(--grey-soft);color:#4a535c}
.pill-stopped,.pill-cut_short{background:var(--amber-soft);color:var(--amber)}

/* claim page head */
.the-claim{margin:0 0 .9rem;font-family:var(--serif);font-size:1.35rem;line-height:1.45;border-left:4px solid var(--teal);padding:.1rem 0 .1rem 1rem}
.facts{list-style:none;margin:.6rem 0;padding:0;color:var(--ink-2);font-size:.98rem}
.facts li{padding:.1rem 0}
.status-line{margin:0 0 .4rem}
.live-note{display:flex;align-items:center;gap:.55rem;color:var(--blue);font-weight:600;margin:0 0 1rem}
.dot{width:.7rem;height:.7rem;border-radius:50%;background:var(--blue);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
@media (prefers-reduced-motion:reduce){.dot{animation:none}}
.live-banner[hidden]{display:none}
.live-banner{position:sticky;top:4.25rem;z-index:4;display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;justify-content:space-between;background:var(--blue-soft);border:1px solid #b9cdee;color:var(--blue);border-radius:12px;padding:.6rem .8rem;margin:0 0 1rem;font-weight:600}

/* the course progress line: stacked on phones, across on wide screens */
.course{margin:0 0 1.25rem}
.course ol{list-style:none;margin:0;padding:0;display:grid;gap:0}
.st a{display:flex;align-items:center;gap:.8rem;min-height:52px;padding:.35rem .25rem;text-decoration:none;color:var(--ink);position:relative}
.st:not(:last-child) a::after{content:"";position:absolute;left:calc(.25rem + 17px);top:calc(50% + 19px);height:calc(100% - 38px);width:2px;background:var(--line)}
.dotnum{flex:none;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.95rem;background:#fff;border:2px solid #bfb9ad;color:#4a535c}
.st-done .dotnum,.st-test .dotnum{background:var(--green);border-color:var(--green);color:#fff}
.st-running .dotnum{background:var(--blue);border-color:var(--blue);color:#fff}
.st-cut_short .dotnum{background:var(--amber);border-color:var(--amber);color:#fff}
.st-not_built .dotnum,.st-not_reached .dotnum,.st-not_run .dotnum{border-style:dashed}
.st-words{display:flex;flex-direction:column;line-height:1.3}
.st-title{font-weight:600}
.st-state{font-size:.85rem;color:var(--muted)}
@media (min-width:900px){
  .course ol{grid-template-columns:repeat(7,1fr);gap:.25rem}
  .st a{flex-direction:column;align-items:center;text-align:center;gap:.4rem;padding:.4rem .2rem}
  .st:not(:last-child) a::after{left:calc(50% + 22px);top:calc(.4rem + 17px);height:2px;width:calc(100% - 44px + .25rem)}
  .st-words{align-items:center}
  .st-title{font-size:.88rem}
  .st-state{font-size:.78rem}
}

/* steps */
.step-head{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .75rem;margin:0 0 .5rem}
.step-head h2{margin:0;flex:1 1 12rem}
.num{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--teal-soft);color:var(--teal-2);font-weight:700;font-size:.95rem;flex:none}
.how h2 .num{margin-right:.6rem}
.blurb{color:var(--muted);font-size:.95rem}
.summary{font-size:1.1rem;font-weight:500}
.facts-inline{color:var(--ink-2);font-size:.92rem}
.step-not_built,.step-not_run,.step-not_reached{background:#fbfaf7}
.step-running{border-color:#b9cdee}
.step-cut_short{border-color:#f0d49a}
.part-h{margin:1.1rem 0 .5rem;font-family:var(--serif);font-weight:600}
.parts,.concepts,.papers,.plain,.note-list{margin:0;padding-left:1.2rem}
.parts li,.concepts li,.papers li,.plain li{margin:.45rem 0}
.concepts p{margin:0}
.papers li .hint{display:block}
.part-text{margin:0;font-family:var(--serif);font-size:1.05rem}
.sides{display:grid;gap:1rem}
@media (min-width:760px){.sides{grid-template-columns:1fr 1fr}}
.side{border-radius:12px;padding:.8rem 1rem}
.side-for{background:#f1f8f4}
.side-against{background:#fbf4ec}
.side h4{margin:0 0 .3rem}
.year{color:var(--muted)}
.gate{background:var(--teal-soft);border:1.5px solid #9cc7c9;border-radius:12px;padding:1rem;margin:1rem 0}
.notes{border-top:1px solid var(--line);margin-top:1rem;padding-top:.9rem}
.notes-h{font-size:1rem}
.note-list{list-style:none;padding:0}
.note-list li{background:#fffbea;border:1px solid #efe2b0;border-radius:10px;padding:.6rem .8rem;margin:0 0 .6rem}
.note-list li p{margin:0}
.note-form label{font-weight:600}
.note-form textarea{margin:0 0 .6rem}
.how{list-style:none;padding:0;margin:0}

@media (min-width:700px){
  body{font-size:18px}
  main{padding:2rem 1.5rem 3rem}
  .card{padding:1.6rem 1.75rem}
  h1{font-size:2.2rem}
  .the-claim{font-size:1.55rem}
}
@media print{.top,.notes,.live-banner,.course{display:none}}