@font-face{font-family:"Inter";src:url(/fonts/InterVariable.woff2) format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(/fonts/JetBrainsMono-Regular.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(/fonts/JetBrainsMono-Medium.woff2) format("woff2");font-weight:500;font-display:swap}

:root{
  --paper:#f5f2ec;--paper-2:#ede9e1;--ink:#171512;--ink-2:#4a463f;--ink-3:#6b665d;--line:#d9d4ca;--line-2:#c6c0b4;
  --buy:#1f6f43;--buy-bg:#dcecdf;--sell:#a8352c;--sell-bg:#f1dcd8;--flat:#5c5750;--flat-bg:#e6e2da;
  --accent:#2f4c9c;--accent-ink:#22397a;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --measure:64ch;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 var(--sans);font-feature-settings:"ss03","cv11";-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
::selection{background:#2f4c9c;color:#fff}
a{color:var(--accent-ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
::-webkit-scrollbar{width:12px;height:12px}::-webkit-scrollbar-thumb{background:var(--line-2);border:3px solid var(--paper);border-radius:8px}
h1,h2,h3{font-weight:600;letter-spacing:-0.02em;text-wrap:balance;margin:0}
h1{font-size:clamp(2.1rem,5.2vw,3.6rem);line-height:1.05;letter-spacing:-0.03em}
h2{font-size:clamp(1.45rem,2.6vw,1.9rem);line-height:1.15}
h3{font-size:1.05rem;line-height:1.3}
p{margin:0 0 1em;max-width:var(--measure)}
small,.muted{color:var(--ink-3)}
.mono,code,.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
code{font-size:.92em;background:var(--paper-2);padding:.1em .35em;border-radius:3px}
.wrap{max-width:1120px;margin:0 auto;padding:0 clamp(18px,4vw,40px)}
hr{border:0;border-top:1px solid var(--line);margin:0}

/* nav */
.nav{display:flex;align-items:center;gap:28px;padding:22px 0;border-bottom:1px solid var(--line)}
.nav .brand{font-weight:650;letter-spacing:-0.02em;text-decoration:none;color:var(--ink);font-size:1.05rem;display:flex;align-items:center;gap:10px}
.nav .brand svg{width:22px;height:22px}
.nav a:not(.brand){text-decoration:none;color:var(--ink-2);font-size:.95rem}
.nav a:not(.brand):hover,.nav a.on{color:var(--ink)}
.nav .spacer{flex:1}
.nav .btn{margin-left:0}
@media (max-width:600px){.nav{gap:16px;flex-wrap:wrap}.nav .spacer{display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;text-decoration:none;font-weight:550;padding:11px 18px;border-radius:7px;border:1px solid var(--ink);font-size:.95rem;cursor:pointer;font-family:inherit;transition:background .15s ease-out,transform .15s ease-out}
.btn:hover{background:#2a2723;color:#fff}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn.ghost:hover{background:var(--paper-2)}
.btn[disabled]{opacity:.55;cursor:default;transform:none}

/* sections */
section{padding:clamp(48px,7vw,88px) 0}
.hero{padding-top:clamp(56px,9vw,120px);padding-bottom:clamp(40px,6vw,72px)}
.hero p.lede{font-size:clamp(1.1rem,1.6vw,1.3rem);color:var(--ink-2);margin-top:22px;max-width:56ch}
.hero .cta{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.two{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);align-items:start}
@media (max-width:820px){.two{grid-template-columns:minmax(0,1fr)}}
@media (max-width:520px){.matrix{font-size:.8rem}.matrix th.row{width:44px;padding-right:8px}.matrix .cell{padding:8px 8px}.matrix th{font-size:.72rem}}

/* matrix */
.matrix{border-collapse:separate;border-spacing:0;width:100%;max-width:520px;font-size:.9rem}
.matrix th{font-weight:500;color:var(--ink-3);text-align:left;padding:0 0 10px;font-size:.8rem;letter-spacing:.01em}
.matrix th.row{text-align:left;padding:0 14px 0 0;color:var(--ink);font-weight:600;font-size:.95rem;width:64px}
.matrix td{padding:4px}
.cell{display:block;border-radius:6px;padding:12px 12px 10px;min-height:66px;border:1px solid transparent}
.cell b{display:block;font-weight:650;font-size:.95rem;letter-spacing:.01em}
.cell small{display:block;margin-top:4px;font-size:.78rem}
.cell.BUY{background:var(--buy-bg);color:var(--buy);border-color:#c5ddca}.cell.BUY small{color:#3d7a57}
.cell.SELL{background:var(--sell-bg);color:var(--sell);border-color:#e6c9c4}.cell.SELL small{color:#b25a52}
.cell.NEUTRAL{background:var(--flat-bg);color:var(--flat);border-color:#d6d1c8}.cell.NEUTRAL small{color:#8a857c}
.cell.NA{background:transparent;color:var(--ink-3);border-color:var(--line)}
.matrix caption{caption-side:bottom;text-align:left;color:var(--ink-3);font-size:.8rem;padding-top:12px}

/* steps / method */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:clamp(20px,3vw,36px);margin-top:36px}
.step h3{margin-bottom:8px}
.step p{font-size:.95rem;color:var(--ink-2)}
.step .k{font-family:var(--mono);color:var(--ink-3);font-size:.78rem;margin-bottom:10px;display:block}

/* stats strip */
.stats{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:8px 0 0}
.stats div{padding:22px 28px 22px 0;margin-right:28px;border-right:1px solid var(--line)}
.stats div:last-child{border-right:0}
.stats b{display:block;font-size:1.7rem;font-weight:600;letter-spacing:-0.03em;font-variant-numeric:tabular-nums}
.stats small{display:block;color:var(--ink-3);margin-top:2px;font-size:.85rem}

/* example call */
.example{border:1px solid var(--line);border-radius:10px;background:#fbfaf7;padding:22px 24px;box-shadow:0 10px 30px -18px rgba(23,21,18,.25)}
.example .tweet{font-size:1.05rem;line-height:1.45;margin:0 0 14px;max-width:none}
.example .tweet mark{background:#fff0a8;color:inherit;padding:.05em .15em;border-radius:2px}
.example dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:0;font-size:.9rem}
.example dt{color:var(--ink-3)}.example dd{margin:0;font-family:var(--mono);font-size:.86rem}
.tag{display:inline-block;font-size:.72rem;font-weight:600;letter-spacing:.04em;padding:2px 7px;border-radius:4px;vertical-align:middle}
.tag.CORRECT{background:var(--buy-bg);color:var(--buy)}.tag.WRONG{background:var(--sell-bg);color:var(--sell)}.tag.PARTIAL{background:var(--flat-bg);color:var(--flat)}

/* prose page */
.prose{max-width:var(--measure)}
.prose h2{margin:56px 0 14px;padding-top:28px;border-top:1px solid var(--line)}
.prose h2:first-child{margin-top:0;border:0;padding-top:0}
.prose h3{margin:28px 0 8px}
.prose ul,.prose ol{padding-left:1.2em;margin:0 0 1em}
.prose li{margin-bottom:.35em}
.prose table{border-collapse:collapse;font-size:.92rem;margin:12px 0 22px;width:100%}
.prose th,.prose td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{color:var(--ink-3);font-weight:500;font-size:.82rem}
.prose td.num,.prose th.num{text-align:right;font-family:var(--mono);font-size:.86rem}
.formula{font-family:var(--mono);background:var(--paper-2);padding:12px 16px;border-radius:6px;font-size:.9rem;margin:10px 0 18px;overflow-x:auto}
.note{border:1px solid var(--line);border-radius:8px;padding:14px 18px;background:#fbfaf7;font-size:.95rem;margin:18px 0}
.note p:last-child{margin-bottom:0}

/* forms */
form.card{border:1px solid var(--line);border-radius:10px;background:#fbfaf7;padding:26px 28px;max-width:460px;min-width:0;box-shadow:0 10px 30px -18px rgba(23,21,18,.25)}
form.card input{width:100%;min-width:0;box-sizing:border-box}
html,body{max-width:100%;overflow-x:hidden}
label{display:block;font-size:.88rem;color:var(--ink-2);margin:14px 0 6px;font-weight:500}
input,textarea{width:100%;font:inherit;padding:10px 12px;border:1px solid var(--line-2);border-radius:6px;background:#fff;color:var(--ink);caret-color:var(--accent)}
input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
input::placeholder,textarea::placeholder{color:#a29d94}
textarea{min-height:76px;resize:vertical}
.msg{margin-top:14px;font-size:.92rem;padding:10px 12px;border-radius:6px;display:none}
.msg.ok{display:block;background:var(--buy-bg);color:var(--buy)}
.msg.err{display:block;background:var(--sell-bg);color:var(--sell)}

/* footer */
footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--ink-3);font-size:.85rem;display:flex;gap:22px;flex-wrap:wrap;align-items:center}
footer a{color:var(--ink-3)}
footer .spacer{flex:1}

/* the one authored motion: the matrix cells settle in on load */
@media (prefers-reduced-motion:no-preference){
  .matrix .cell{opacity:0;transform:translateY(6px);animation:settle .6s cubic-bezier(.2,.7,.2,1) forwards}
  .matrix tr:nth-child(1) .cell{animation-delay:.05s}.matrix tr:nth-child(2) .cell{animation-delay:.15s}.matrix tr:nth-child(3) .cell{animation-delay:.25s}
  @keyframes settle{to{opacity:1;transform:none}}
}